Municipal WWTP design notes — what the calculators taught us

Biological N & P removal

Your A²/O Bio-P May Not Work at 30 °C — and Nobody Warned You

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A²/O Biological Nutrient RemovalChemical Phosphorus Removal & Carbon DosingMunicipal Wastewater Treatment Design Manual

Aeration · tank sizing

Tropical WWTP Design: You're Over-Sizing the Tanks and Missing the Real Lever

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Aeration Oxygen DemandA²/O Biological Nutrient RemovalChemical Phosphorus Removal & Carbon DosingMunicipal Wastewater Treatment Design Manual

Chemical P · alkalinity

Your Alkalinity Deficit Is Inevitable — and It Will Bite at Commissioning

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Chemical Phosphorus Removal & Carbon DosingAeration Oxygen DemandA²/O Biological Nutrient RemovalMunicipal Wastewater Treatment Design Manual

Secondary clarifier · SVI

Tropical Sludge Bulking Quietly Halves Your Clarifier Capacity — and SVI Is the Meter

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Secondary ClarifierA²/O Biological Nutrient RemovalMunicipal Wastewater Treatment Design Manual

Headworks · grit removal

Vortex, Aerated or Horizontal: Choosing a Grit Chamber for a Tropical Headworks

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HeadworksVortexAerated Grit ChamberFine Screen & Drum Screen

Primary treatment

Primary Clarifier Sizing in the Tropics: What Surface Overflow Rate Doesn't Tell You

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Primary ClarifierRectangular Primary ClarifierLamella

Biological treatment

Oxidation Ditch, SBR or Conventional Activated Sludge: Selecting a Suspended-Growth Process in the Tropics

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Conventional Activated SludgeOxidation DitchSequencing Batch Reactor

Biological treatment

Trickling Filter, MBBR or MBR: When Suspended Growth Is Not the Answer

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MBBR DesignTrickling FilterMBR

Biological treatment

Biological or Chemical Phosphorus Removal: One Carbon Balance, Two Religions

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UCT / MUCTChemical Phosphorus Removal & Carbon Dosing

Secondary clarification

Secondary Clarifier Sizing: Four Envelopes, One SVI, and the Plant That Fails on the Fifth Check

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Secondary ClarifierRectangular Secondary ClarifierLamella / Tube Settler Clarifier

Disinfection

Chlorine, UV or Ozone: What a 30 °C Effluent Does to Your Disinfection Choice

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Chlorine DisinfectionUV DisinfectionOzone Disinfection

Sludge handling

DAF Thickening of Waste Activated Sludge: The Recycle Ratio Is the Design

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DAF Sludge ThickenerSludge Thickening & DewateringAnaerobic Digester

Sludge handling

Anaerobic Digestion in the Tropics: Your Heat Bill Is 13 % of the Gas — Spend It on the Ammonia Instead

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Anaerobic DigesterDAF Sludge Thickener

Tertiary treatment & reuse

Secondary Effluent to Reuse: Why Filtration, Carbon and RO Are a Train, Not a Menu

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Media FilterUF / MF Membrane DesignGranular Activated Carbon AdsorberReverse Osmosis for Water Reuse

Instrumentation & control

The %FS Trap and the 750 Ω Ceiling: Instrument Design Details That Decide Whether a Tropical WWTP's Data Is Real

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Instrument Range & Accuracy Selection4–20 mA Loop & Signal-Cable SizingRS-485 / Modbus RTU Bus DesignI/O Schedule Builder

Hydraulics & equalisation

Equalisation Basins: The Capacity That Pays for Everything Downstream

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Equalization BasinPipe & Dosing-Line Sizing

Industry · palm oil (Indonesia · Malaysia)

Palm Oil Mill Effluent in Indonesia and Malaysia: Treat the COD as Fuel, Not as a Waste

Indonesia and Malaysia grow most of the world's palm oil, and every tonne of crude palm oil leaves behind roughly three tonnes of palm oil mill effluent — POME — the single largest pollutant load of…

Equalization BasinAnaerobic DigesterAeration Oxygen DemandSecondary Clarifier

Industry · textile & dyeing (Vietnam · Indonesia)

Textile and Dyeing Wastewater in Vietnam and Indonesia: Colour Is a Clue, Not the Problem

Walk up to any dyehouse discharge point and the first thing you notice is colour. It is also the first thing the operator blames, the first thing the neighbour complains about, and frequently the…

Equalization BasinChemical Phosphorus Removal & Carbon DosingPrimary ClarifierSludge Thickening & Dewatering

Industry · food processing (Thailand · Vietnam)

Tapioca Starch and Seafood Processing Wastewater in Thailand and Vietnam: High-Strength Loads on a Seasonal Clock

Thailand's tapioca belt and Vietnam's seafood processing coast share an industry structure that wastewater textbooks rarely capture: both run on a **calendar, not a steady state**. The starch mills…

DAF Sludge ThickenerAnaerobic DigesterEqualization BasinAeration Oxygen Demand

Industry · aquaculture (Vietnam · Thailand · Indonesia)

Shrimp Farming Water Quality in Vietnam, Thailand and Indonesia: Measure Before You Treat, Treat Before You Discharge

In the shrimp ponds of Vietnam's Mekong Delta, Thailand's eastern seaboard and Indonesia's coastal provinces, the crop fails in the water before it fails in the market. The disease outbreaks that…

4–20 mA Loop & Signal-Cable SizingRS-485 / Modbus RTU Bus DesignOnline-Monitoring UPS & Battery SizingI/O Schedule Builder

Industry · industrial estates (Malaysia · Singapore)

Shared Wastewater Plants for Industrial Estates in Malaysia and Singapore: Mixed Loads, One Discharge, Reuse at the End

An industrial estate is a wastewater designer's worst case and best case at once. Worst case, because a centralised plant receives every tenant's chemistry in one sewer — semiconductor rinse water…

Equalization BasinEffluent Online-Monitoring ConfiguratorConventional Activated SludgeChemical Phosphorus Removal & Carbon Dosing

Instrumentation & flow

Máy đo lưu lượng điện từ: Chọn đúng cho trạm xử lý nước thải

Hướng dẫn chọn máy đo lưu lượng điện từ cho nước thải: vật liệu lót, điện cực, nối đất, vận tốc 0,5–3 m/s, ứng dụng bùn thải và 5 sai lầm lắp đặt thường gặp.

Thiết kế vòng lặp thiết bịCẩm nang thiết kế

Bể điều hòa

Bể điều hòa trong xử lý nước thải: Vì sao cần và cách tính thể tích

Bể điều hòa (equalization basin) làm phẳng dao động lưu lượng và nồng độ nước thải. Công thức tính thể tích V = Q × HRT, HRT gợi ý 4–12 h, sai lầm thường gặp khi thiết kế.

Bể điều hòa & đỉnh lưu lượngCẩm nang thiết kế

Bể lắng

Tính toán bể lắng: Primary, Secondary và Lamella cho nước thải

Thiết kế bể lắng nước thải: công thức A = Q/v0 (surface loading) và V = Q×HRT. So sánh primary, secondary (trả bùn RAS) và lamella (plate settler) — sai lầm thường gặp khi tính.

Bể lắng sơ cấpBể lắng thứ cấp

pH & phân tích

Máy đo pH trực tuyến cho nước thải: Nguyên lý, lắp đặt và hiệu chuẩn

Máy đo pH trực tuyến (online pH analyzer) cho nước thải: điện cực thủy tinh, bù nhiệt, lắp đặt giếng đo, tự làm sạch và hiệu chuẩn 2 điểm. Sai lầm thường gặp khi vận hành.

Thiết kế vòng lặp thiết bịCẩm nang thiết kế

Bơm & định lượng

Bơm định lượng hóa chất xử lý nước thải: Chọn bơm và tính lưu lượng

Bơm định lượng (chemical dosing pump) cho nước thải: solenoid, motor-driven, peristaltic. Công thức Q_dose = C_target×Q_water/(C_chem×η), sai lầm khi lắp đặt và chọn vật liệu.

Định lượng cloHóa chất P & carbon

Bơm bùn

Bơm bùn thải: Chọn loại bơm và tính lưu lượng

Bơm bùn thải (sludge pump) cho trạm xử lý nước thải: bơm chìm, bơm ly tâm, bơm piston màng. Công thức tính lưu lượng bùn tuần hoàn (RAS) và bùn dư (WAS), nồng độ bùn MLSS và 5 sai lầm lắp đặt.

Bùn nén & épHướng dẫn chọn bơm

Bể kỵ khí

Bể UASB xử lý nước thải: Nguyên lý và tính tải trọng

Bể UASB (Upflow Anaerobic Sludge Blanket) xử lý nước thải hữu cơ cao: tấm ngăn 3 pha, tính tải trọng hữu cơ OLR, thể tích theo HRT và 5 sai lầm thiết kế thường gặp.

Lượng khí sinh họcCẩm nang thiết kế

Màng MBR

Thiết kế bể MBR: Diện tích màng và vận hành

Bể MBR (Membrane Bioreactor) xử lý nước thải: tính diện tích màng theo flux, MLSS cao 8–12 g/L, rửa màng (CIP), thông số vận hành và 5 sai lầm khi chạy trạm MBR nhiệt đới.

Thiết kế MBRCẩm nang thiết kế

Sục khí & oxy

Tính nhu cầu oxy sục khí: Nhu cầu O₂ và lưu lượng khí thổi

Tính nhu cầu oxy hòa tan (aeration oxygen demand) cho bể sinh học: công thức từ tải lượng BOD và nitrat hóa, hiệu suất hòa tan oxy SAE và 5 sai lầm chọn máy thổi khí.

Nhu cầu oxy sục khíCẩm nang thiết kế

Bể MBBR

Thiết kế bể MBBR: Giá thể lưu động và tải trọng sinh học

Bể MBBR (Moving Bed Biofilm Reactor) dùng giá thể lưu động: tính diện tích carrier theo tải trọng COD, filling ratio 50–70 %, bảo vệ màng và 5 sai lầm thiết kế.

Thiết kế MBBRCẩm nang thiết kế

Bể SBR

Thiết kế bể SBR: Chu kỳ và tính thể tích

Bể SBR (Sequencing Batch Reactor) vận hành theo mẻ: pha fill/react/settle/draw, tính thể tích theo chu kỳ, SRT 10–25 ngày và 5 sai lầm vận hành.

Thiết kế SBRCẩm nang thiết kế

Khử trùng UV

Khử trùng nước thải bằng tia UV: Liều chiếu và chọn thiết bị

Khử trùng nước thải bằng tia cực tím (UV): liều chiếu (mJ/cm²), UVT quyết định, chọn đèn và 5 sai lầm lắp đặt trạm.

Khử trùng UVCẩm nang thiết kế

Bể lắng Lamella

Bể lắng Lamella: Tấm nghiêng và tính diện tích

Bể lắng Lamella (plate settler): tấm nghiêng tăng diện tích lắng 3–5 lần, tính theo surface loading, hợp cải tạo trạm chật và 5 sai lầm.

Bể lắng LamellaCẩm nang thiết kế

Bể hoạn khí (oxidation ditch)

Bể hoạn khí (oxidation ditch): Tính thể tích, F/M và SRT

Oxidation ditch là biến thể extended aeration: kênh dài hình móng ngựa, khuấy trộn bằng rotor (Carrousel) hoặc chổi quay (Orbal). HRT dài (20–30 h) nên bùn già, ít bùn dư — phù hợp vận hành đơn giản.

Bể hoạn khí (oxidation ditch)Cẩm nang thiết kế

Bể lắng cát sục khí

Bể lắng cát sục khí: Tính thể tích, chiều dài và lưu lượng khí

Khí sục qua đáy tạo dòng xoáy (roll). Hạt cát nặng (thiết kế 0,2 mm) văng ra đáy do ly tâm, trong khi chất hữu cơ lơ lửng nhẹ hơn được giữ trong dòng nhờ chuyển động xoáy — khác bể lắng cát trọng lực chỉ tách theo vận tốc chìm…

Bể lắng cát sục khíCẩm nang thiết kế

Bể lắng cát xoáy (vortex)

Bể lắng cát xoáy (vortex): Tính vận tốc lắng và đường kính

Nước vào theo tiếp tuyến tạo dòng xoáy, hạt cát nặng bị ly tâm văng ra đáy phễu, còn hữu cơ lơ lửng theo dòng tràn ra. Khác bể lắng cát sục khí, vortex không cần sục khí (thủy lực thuần) — nhỏ gọn, ít điện năng, dễ vận hành…

Bể lắng cát xoáy (vortex)Cẩm nang thiết kế

Bể lắng đứng

Bể lắng đứng (chữ nhật): Tính diện tích và HRT cho sơ cấp

Bể lắng sơ cấp tách cặn lơ lửng thô bằng trọng lực trước bể sinh học, giảm tải bùn cho bể hiếu khí và bảo vệ bơm. Bể lắng đứng (chữ nhật) dùng máng gạt bùn cơ khí chạy dọc đáy đưa bùn về hố thu.

Bể lắng đứngCẩm nang thiết kế

Bể lắng sơ cấp (primary)

Bể lắng sơ cấp: Tính diện tích, SOR và HRT

Bể lắng sơ cấp (PST) tách cặn lơ lửng bằng trọng lực trước bể sinh học. Giảm 50–65 % TSS và 25–35 % BOD (phần BOD đi cùng cặn), bảo vệ bể sinh học khỏi quá tải.

Bể lắng sơ cấp (primary)Cẩm nang thiết kế

Bể lắng thứ cấp hình chữ nhật

Bể lắng thứ cấp hình chữ nhật: Tính diện tích, SLR và vận tốc xóc

Bể lắng thứ cấp tách bùn hoạt tính khỏi nước sau bể sinh học: bùn lắng đáy, phần trong tràn ra, RAS trả bùn về đầu. Hình chữ nhật dài hẹp cho hiệu quả thủy lực tốt hơn hình tròn cùng diện tích.

Bể lắng thứ cấp hình chữ nhậtCẩm nang thiết kế

Thiết kế bể lắng thứ cấp (4 bao)

Thiết kế bể lắng thứ cấp: Phong bì 4 giới hạn (SOR/SLR)

Bể lắng thứ cấp tách bùn bằng trọng lực. Thiết kế theo phong bì 4 giới hạn (4-envelope) để bao cả lưu lượng trung bình/đỉnh và cả tải rắn (solids) — tránh tràn bùn lúc đỉnh.

Thiết kế bể lắng thứ cấp (4 bao)Cẩm nang thiết kế

Bể lọc nhỏ giọt (trickling filter)

Bể lọc nhỏ giọt: Tính thể tích media, OLR và HLR

Nước phân bố qua lớp vật liệu (đá / nhựa định hình) phủ màng sinh học; vi sinh bám dính phân hủy BOD. Khác bùn hoạt tính lơ lửng — ít điện, bền, chịu tải biến động tốt.

Bể lọc nhỏ giọt (trickling filter)Cẩm nang thiết kế

Bể sinh học hiếu khí (CAS)

Bể sinh học hiếu khí (CAS): Tính thể tích, F/M và SRT

CAS (conventional activated sludge): bùn hoạt tính hiếu khí phân hủy BOD, sau đó lắng ở bể lắng thứ cấp, phần bùn (RAS) trả về đầu bể. Là công nghệ sinh học nền tảng nhất.

Bể sinh học hiếu khí (CAS)Cẩm nang thiết kế

Bể thiếu khí khử nitrat

Bể thiếu khí khử nitrat: Tính liều carbon và thể tích

Dưới điều kiện thiếu khí (không O₂ tự do, có NO₃), vi sinh dị dưỡng dùng nitrate làm chất nhận điện tử, khử NO₃ → N₂ thoát ra khỏi nước. Phản ứng cần carbon hữu cơ làm nguồn năng lượng — nếu nước vào thiếu carbon, phải bổ sung (methanol, ethanol, giốt)…

Bể thiếu khí khử nitratCẩm nang thiết kế

Bộ lưu điện tủ quan trắc online (online monitoring UPS)

Bộ lưu điện (UPS) cho tủ quan trắc nước thải online: Tính VA, Ah và ảnh hưởng nhiệt đới

Khi mất lưới, UPS giữ tủ quan trắc tiếp tục ghi nhận (và gửi 4G) trong thời gian quy định. Dung lượng ắc quy quyết định thời gian lưu (backup); nhiệt độ nhiệt đới làm giảm mạnh tuổi thọ và hiệu năng VRLA…

Bộ lưu điện tủ quan trắc online (online monitoring UPS)Cẩm nang thiết kế

Chọn dải đo & độ chính xác (range & accuracy selection)

Chọn dải đo và độ chính xác: Cái bẫy %FS và điểm vận hành vàng 40–70 %FS

Độ chính xác công bố (±acc %FS) tính trên toàn dải, không phải trên giá trị đo. Cùng một đầu ±1 %FS, ở 20 %FS lỗi tương đối đã là 5 %, ở 10 %FS là 10 %. Chọn dải sao cho điểm vận hành rơi vào vùng vàng…

Chọn dải đo & độ chính xác (range & accuracy selection)Cẩm nang thiết kế

Lọc đa phương tiện (media filtration)

Lọc đa phương tiện: Tính diện tích lọc, tổn thất áp sạch và rửa ngược

Nước qua lớp vật liệu (anthracite / cát / sỏi), cặn lơ lửng bị giữ lại. Lọc đa phương tiện (dual / multimedia) cho tốc độ cao hơn lọc cát nhanh, thường đặt sau sinh học hoặc màng để polishing TSS.

Lọc đa phương tiện (media filtration)Cẩm nang thiết kế

Màn hình trống tinh (fine drum screen)

Màn hình trống tinh: Tính diện tích lưới, vận tốc qua lưới và tổn thất áp

Lưới tinh (aperture 1–6 mm) giữ cặn mịn, rác và sợi bảo vệ bơm / màng / bùn hoạt tính. Trống quay liên tục, lưới được chải sạch bằng cào (rake).

Màn hình trống tinh (fine drum screen)Cẩm nang thiết kế

Máy đo độ đục

Máy đo độ đục nước thải: Chọn cảm biến và dải đo đúng

Độ đục là mức độ nước làm tán xạ ánh sáng do hạt lơ lửng (bùn, cặn, vi sinh). Cảm biến chuẩn đo theo ISO 7027: phát xạ đèn hồng ngoại 860 nm và thu ánh sáng tán xạ ở góc 90°. Góc 90° loại trừ ảnh hưởng màu và hấp thụ, nên giá trị ổn định ngay cả với nước thải có màu. Với nước thải có nồng độ cao, một số cảm biến dùng tỷ lệ (scattering / transmission) để mở rộng dải và tự bù bám bẩn…

Máy đo độ đụcCẩm nang thiết kế

Khử trùng ôzôn

Khử trùng ôzôn nước thải: Liều, năng lượng và rủi ro bromate

Ôzôn (O₃) là chất oxy hóa mạnh, tiêu diệt vi khuẩn và virus nhanh, rồi phân hủy thành O₂ — không để lại dư lượng hóa học. Khác với clo, ôzôn không tạo THM/HAAs (bởi phẩm khử trùng clo), nên ưu tiên khi nước có hữu cơ cao hoặc yêu cầu tái dùng nghiêm ngặt…

Khử trùng ôzônCẩm nang thiết kế

RO tái dụng nước thải

RO tái dụng nước thải: Tính permeate, element và áp lực

RO (thẩm thấu ngược) dùng màng áp lực cao ép nước qua lớp bán thấm, giữ muối và ô nhiễm. Khác UF/MF, RO vận hành ở 15–40 bar, là bước khử khoáng sâu cho tái dùng công nghiệp hoặc thấm ngược.

RO tái dụng nước thảiCẩm nang thiết kế

Than hoạt tính lọc nước thải (activated carbon)

Than hoạt tính: Tính thể tích hấp phụ, EBCT và lượng carbon

Nước chảy qua lớp than hoạt tính dạng hạt (granular activated carbon – GAC); chất ô nhiễm hấp phụ trên bề mặt lỗ rỗng. Dùng sau bước sinh học / màng để polishing COD, màu, mùi, hoặc loại trace organics trước màng RO…

Than hoạt tính lọc nước thải (activated carbon)Cẩm nang thiết kế

Thiết kế A²/O (BNR)

Thiết kế A²/O khử nitrat & phốt pho: Thể tích 3 vùng và AOR

A²/O = Anaerobic (vi sinh thả P) → Anoxic (khử nitrat) → Aerobic (nitrat hóa + hấp thụ P). Một trong những công nghệ BNR phổ biến và cân bằng nhất.

Thiết kế A²/O (BNR)Cẩm nang thiết kế

Thiết kế bus RS-485 (RS-485 bus design)

Thiết kế bus RS-485 cho trạm XLNT: Chiều dài tối đa, trở đầu cuối và chống nhiễu nhiệt đới

RS-485 truyền vi sai, chịu nhiễu tốt. Chiều dài tối đa giảm theo baud và chất lượng cáp / nhiễu. Sai trở đầu cuối hoặc nối sai grounding sinh phản xạ, mất gói tin — đặc biệt hại ở trạm ồn (biến tần) và nhiệt đới (sét)…

Thiết kế bus RS-485 (RS-485 bus design)Cẩm nang thiết kế

Thiết kế đầu vào: chắn rác và bể lắng cát (headworks)

Thiết kế headworks: Chắn rác (Kirschmer) và bể lắng cát

Đầu vào gồm chắn rác (giữ vật lớn bảo vệ bơm / máy) và bể lắng cát (giữ cát 0,2 mm bảo vệ đường ống / bơm). Đây là công trình đầu tiên — sai sót ở đây ảnh hưởng toàn trạm.

Thiết kế đầu vào: chắn rác và bể lắng cát (headworks)Cẩm nang thiết kế

Thiết kế đường ống & tuyến định lượng (pipe & dosing-line sizing)

Thiết kế đường ống và tuyến định lượng: Tính DN, vận tốc và tổn thất áp Hazen–Williams

Kích thước ống quyết định vận tốc dòng chảy và tổn thất áp ma sát. Vận tốc quá cao → xói mòn, tách khí, ồn; quá thấp → lắng cặn, vi sinh đệm. Chọn DN trước rồi mới chọn lưu lượng kế để dải đo (range) có ý nghĩa…

Thiết kế đường ống & tuyến định lượng (pipe & dosing-line sizing)Cẩm nang thiết kế

Thiết kế UCT (Bio-P)

Thiết kế UCT khử nitrat & phốt pho sinh học: 3 vùng và SRT

UCT (University of Cape Town) là biến thể A²/O: vùng thiếu khí nằm giữa anaerobic và aerobic, và RAS đi vào thiếu khí (không vào anaerobic). Nhờ đó nitrate không lọt vào anaerobic → vi sinh thả P (bio-P) tối đa. Giữ P sinh học tốt nhất trong các cấu hình BNR…

Thiết kế UCT (Bio-P)Cẩm nang thiết kế

Màng UF/MF nước thải

Màng UF/MF nước thải: Tính diện tích, module và recovery

UF (siêu lọc) giữ hạt 0,01–0,1 µm, loại bỏ vi sinh, coliform và phần lớn vi nhựa; MF (vi lọc) giữ 0,1–1,0 µm, chủ yếu tách cặn lơ lửng. Cả hai đều lọc áp suất thấp (TMP thường 0,3–1,0 bar), khác với RO áp lực cao. Chọn UF khi cần vệ sinh sinh học (cho nước tái dùng); chọn MF khi chỉ cần làm trong trước màng RO hoặc lọc sinh học màng (MBR)…

Màng UF/MF nước thảiCẩm nang thiết kế

คอลัมน์คาร์บอน activated (GAC)

คอลัมน์คาร์บอน activated (GAC): คำนวณปริมาตรเบด EBCT และปริมาณคาร์บอน

กลุ่มเป้าหมาย: วิศวกรออกแบบสถานีบำบัดน้ำเสีย (ชุมชน/อุตสาหกรรม) ที่ต้องการ polishing COD สี กลิ่น หรือ trace organics ในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง:…

คำนวณความต้องการออกซิเจนเติมอากาศ

คำนวณความต้องการออกซิเจนเติมอากาศ: ความต้องการ O₂ และอัตราก๊าซเป่าลม

กลุ่มเป้าหมาย: วิศวกรออกแบบและเดินระบบสถานีบำบัดน้ำเสีย โรงงาน และนิคมอุตสาหกรรม ในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ความต้องการออกซิเจนเติมอากาศ ·…

บ่อ UASB บำบัดน้ำเสีย

บ่อ UASB บำบัดน้ำเสีย: หลักการและคำนวณภาระอินทรีย์

กลุ่มเป้าหมาย: วิศวกรออกแบบสถานีบำบัดน้ำเสียอุตสาหกรรม (อาหาร เบียร์ นม แป้งมัน) ในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ปริมาณก๊าซชีวภาพ · คู่มือออกแบบ

ปั๊มจ่ายสารเคมีน้ำเสีย

ปั๊มจ่ายสารเคมีน้ำเสีย: การเลือกปั๊มและคำนวณอัตราการไหล

กลุ่มเป้าหมาย: วิศวกรออกแบบและเดินระบบสถานีบำบัดน้ำเสีย โรงงาน และนิคมฯ ในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: การจ่ายคลอรีน · สารเคมี P & คาร์บอน ·…

ถังปรับสมดุลน้ำเสีย

ถังปรับสมดุลน้ำเสีย: ทำไมจึงจำเป็นและวิธีคำนวณปริมาตร

กลุ่มเป้าหมาย: วิศวกรโครงการและผู้รับเหมา EPC ที่ออกแบบสถานีบำบัดน้ำเสียชุมชน นิคมอุตสาหกรรม และเขตอุตสาหกรรมในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~5 นาที เครื่องมือที่เกี่ยวข้อง: คำนวณถังปรับสมดุล…

จอหมุนตะแกรงละเอียด

จอหมุนตะแกรงละเอียด: คำนวณพื้นที่ตะแกรง ความเร็วผ่านตะแกรง และความสูญเสียความดัน

กลุ่มเป้าหมาย: วิศวกรออกแบบสถานีบำบัดที่ต้องดักตะกอนละเอียด (ขยะ / เส้นใย) ก่อนบำบัดชีวภาพหรือเมมเบรน เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบจอหมุนตะแกรงละเอียด · คู่มือออกแบบ

ออกแบบ headworks

ออกแบบ headworks: ตะแกรงแท่ง (Kirschmer) และบ่อดักทราย

กลุ่มเป้าหมาย: วิศวกรออกแบบโครงสร้างต้นน้ำ (headworks) สถานีบำบัดน้ำเสีย เวลาอ่าน: ~7 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบ headworks · คู่มือออกแบบ

เลือกช่วงวัดและความแม่นยำ

เลือกช่วงวัดและความแม่นยำ: กับดัก %FS และจุดทำงานทองคำ 40–70 %FS

กลุ่มเป้าหมาย: วิศวกรเลือกเซนเซอร์ DO / MLSS / pH / ความขุ้น / อัตราการไหล เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: เลือกช่วงและความแม่นยำ · คู่มือออกแบบ

ออกแบบบ่อ MBR

ออกแบบบ่อ MBR: พื้นที่เมมเบรนและการเดินระบบ

กลุ่มเป้าหมาย: วิศวกรออกแบบและเดินระบบสถานีบำบัดน้ำเสียนำกลับมาใช้ ที่อยู่อาศัย และนิคมอุตสาหกรรม ในเวียดนาม อินโดนีเซีย มาเลเซีย และไทย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบ MBR ·…

ตัวกรองมีเดีย

ตัวกรองมีเดีย: คำนวณพื้นที่กรอง ความสูญเสียความดัน และการล้างย้อนกลับ

กลุ่มเป้าหมาย: วิศวกรออกแบบบำบัดขั้นที่ 3 (tertiary) สำหรับเมืองเขตร้อน เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบตัวกรองมีเดีย · คู่มือออกแบบ

เครื่องสำรองไฟ UPS สำหรับตู้ตรวจวัดน้ำเสียออนไลน์

เครื่องสำรองไฟ UPS สำหรับตู้ตรวจวัดน้ำเสียออนไลน์: คำนวณ VA Ah และผลกระทบเขตร้อน

กลุ่มเป้าหมาย: วิศวกรติดตั้งตู้ตรวจวัดออนไลน์ (pH/DO/MLSS/ความขุ้น/อัตราการไหล + logger) เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: เครื่องสำรองไฟตู้ตรวจวัด · คู่มือออกแบบ

เครื่องวัด pH ออนไลน์สำหรับน้ำเสีย

เครื่องวัด pH ออนไลน์สำหรับน้ำเสีย: หลักการ ติดตั้ง และการสอบเทียบ

กลุ่มเป้าหมาย: ช่างเทคนิคเดินระบบและวิศวกรออกแบบสถานีบำบัดน้ำเสีย โรงงาน และนิคมฯ ในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~5 นาที เครื่องมือที่เกี่ยวข้อง: การออกแบบลูปอุปกรณ์ · ดูกลุ่มเครื่องวิเคราะห์

ออกแบบท่อและสายจ่ายสาร

ออกแบบท่อและสายจ่ายสาร: คำนวณ DN ความเร็ว และสูญเสียความดัน Hazen–Williams

กลุ่มเป้าหมาย: วิศวกรกระบวนการที่ต้องเลือกเส้นผ่านศูนย์กลางท่อ (DN) สำหรับสายปั๊มจ่ายสาร/process ก่อนเลือกเครื่องวัดอัตราการไหล เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบท่อและสายจ่ายสาร ·…

การออกแบบบ่อตกตะกอนขั้นต้น

การออกแบบบ่อตกตะกอนขั้นต้น: พื้นที่ผิวและระยะกักน้ำ (HRT)

กลุ่มเป้าหมาย: วิศวกรออกแบบและเดินระบบสถานีบำบัดน้ำเสียในเวียดนาม อินโดนีเซีย มาเลเซีย และไทย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: บ่อตกตะกอนขั้นต้น · บ่อตกตะกอนขั้นที่สอง · แลมเมลลา

บ่อตกตะกอน secondary แบบสี่เหลี่ยมผืนผ้า

บ่อตกตะกอน secondary แบบสี่เหลี่ยมผืนผ้า: คำนวณพื้นที่ SLR และความเร็วน้ำข้าม

กลุ่มเป้าหมาย: วิศวกรออกแบบบ่อตกตะกอนทุติยภูมิ (clarifier) สถานีบำบัดชีวภาพในเวียดนาม อินโดนีเซีย มาเลเซีย และไทย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบบ่อตกตะกอน secondary…

ออกแบบบัส RS-485 สำหรับสถานีบำบัดน้ำเสีย

ออกแบบบัส RS-485 สำหรับสถานีบำบัดน้ำเสีย: ความยาวสูงสุด ความต้านทานปลายสาย และป้องกันสัญญาณรบกวนเขตร้อน

กลุ่มเป้าหมาย: วิศวกรเชื่อมต่อเครือข่ายเซนเซอร์ / inverter ด้วย RS-485 (Modbus) เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบบัส RS-485 · คู่มือออกแบบ

ปั๊มสลัดจ์น้ำเสีย

ปั๊มสลัดจ์น้ำเสีย: เลือกชนิดปั๊มและคำนวณอัตราการไหล

กลุ่มเป้าหมาย: วิศวกรออกแบบและเดินระบบสถานีบำบัดน้ำเสีย โรงงาน และนิคมอุตสาหกรรมในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: การหนาแน่น&การกรองสลัดจ์ · คู่มือเลือกปั๊ม

บ่อกรองแบบหยด

บ่อกรองแบบหยด: คำนวณปริมาตร media OLR และ HLR

กลุ่มเป้าหมาย: วิศวกรออกแบบบ่อบำบัดชีวภาพแบบติดผิว (attached growth) สถานีบำบัดน้ำเสีย เวลาอ่าน: ~6 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบบ่อกรองแบบหยด · คู่มือออกแบบ

ออกแบบ UCT กำจัดไนเตรตและฟอสฟอรัสทางชีวภาพ

ออกแบบ UCT กำจัดไนเตรตและฟอสฟอรัสทางชีวภาพ: 3 โซนและ SRT

กลุ่มเป้าหมาย: วิศวกรออกแบบสถานี BNR ที่รักษาฟอสฟอรัสทางชีวภาพ (ตาม QCVN/DJK) ในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~7 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบ UCT Bio-P · คู่มือออกแบบ

บ่อดักทรายแบบ vortex

บ่อดักทรายแบบ vortex: คำนวณความเร็วตกตะกอนและเส้นผ่านศูนย์กลาง

กลุ่มเป้าหมาย: วิศวกรออกแบบระบบต้นน้ำ (headworks) สถานีบำบัดน้ำเสีย โรงงาน และนิคมอุตสาหกรรมในเวียดนาม อินโดนีเซีย และไทย เวลาอ่าน: ~5 นาที เครื่องมือที่เกี่ยวข้อง: ออกแบบบ่อดักทราย vortex ·…

Filter Media

Filter Media: Menghitung Luas Filter, Kehilangan Tekanan, dan Backwash

Target: insinyur desain pengolahan lanjut (tersier) untuk kota tropis Waktu baca: ~6 menit Alat terkait: Desain filter media · Panduan desain

Drum Screen Halus

Drum Screen Halus: Menghitung Luas Screen, Kecepatan Aliran, dan Kehilangan Tekanan

Target: insinyur desain stasiun pengolahan yang harus menyaring padatan halus (sampah / serat) sebelum biologi atau membran Waktu baca: ~6 menit Alat terkait: Desain drum screen halus · Panduan desain

UPS untuk Panel Monitoring Online

UPS untuk Panel Monitoring Online: Menghitung VA, Ah, dan Dampak Tropis

Target: insinyur pemasangan panel monitoring online (pH/DO/MLSS/kekeruhan/debit + logger) Waktu baca: ~6 menit Alat terkait: UPS panel monitoring · Panduan desain

Desain Bus RS-485 untuk Stasiun Pengolahan Air Limbah

Desain Bus RS-485 untuk Stasiun Pengolahan Air Limbah: Panjang Maksimum, Terminasi, dan Proteksi Noise Tropis

Target: insinyur penghubung jaringan sensor / inverter dengan RS-485 (Modbus) Waktu baca: ~6 menit Alat terkait: Desain bus RS-485 · Panduan desain

Bak Pengendap Awal

Bak Penangkap Lumpur Awal (Primary Clarifier): Luas Permukaan dan HRT

Target: insinyur desain dan operator stasiun pengolahan air limbah di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Desain bak pengendap awal · Panduan desain

Reaktor UASB Anaerobik

Reaktor UASB Anaerobik: Beban Organik (OLR) dan Volume

Target: insinyur desain stasiun pengolahan air limbah industri (pangan, bir, susu, tapioka) di Vietnam, Indonesia, dan Thailand Waktu baca: ~6 menit Alat terkait: Volume biogas & digester · Panduan desain

Bak Pengendap Sekunder

Bak Pengendap Sekunder Persegi Panjang: Luas dari SOR dan SLR

Target: insinyur desain bak pengendap sekunder (clarifier) stasiun biologi di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Desain bak pengendap sekunder · Panduan desain

DAF Thickener

Pengapungan Dengan Udara Terlarut (DAF): Luas Flotasi, Rasio Udara-Padatan, dan Recycle

Target: insinyur desain pengental lumpur (thickening) stasiun pengolahan air limbah tropis Waktu baca: ~6 menit Alat terkait: Desain DAF thickener · Panduan desain

Reaktor MBR

Membrane Bioreactor (MBR): Volume Bioreaktor, Luas Membran, dan Flux

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Desain MBR & luas membran · Panduan desain

Kebutuhan Oksigen Aerasi

Kebutuhan Oksigen Aerasi (AOR/SOR): Beban O₂, SOTE, dan Debit Udara

Target: insinyur desain stasiun biologi (activated sludge) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Kebutuhan O₂ aerasi · Panduan desain

Unit Masuk (Headworks)

Headworks: Lebar Saluran Saringan Bar dan Bak Penangkap Pasir

Target: insinyur desain unit masuk (headworks) stasiun pengolahan air limbah di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Desain headworks · Panduan desain

Bak Pasir Vortex

Bak Penangkap Pasir Vortex (Siklon): Volume, Diameter, dan Waktu Detensi

Target: insinyur desain unit masuk (headworks) stasiun pengolahan air limbah tropis Waktu baca: ~6 menit Alat terkait: Desain bak pasir vortex · Panduan desain

Pipa Dosis Kimia

Dimensi Pipa Dosis Kimia: Diameter, Kecepatan, dan Headloss Hazen–Williams

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Dimensi pipa dosis · Panduan desain

Bak Equalisasi

Bak Equalisasi (EQ): Volume, Waktu Detensi, dan Daya Pencampur

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Desain bak equalisasi · Panduan desain

Adsorpsi Karbon Aktif

Adsorpsi Karbon Aktif: Volume Bed, Diameter Vessel, dan Umur Bed

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Desain adsorpsi karbon aktif · Panduan desain

Proses UCT Bio-P

Proses UCT Penghilangan Fosfor Biologis: SRT, Volume, dan Kebutuhan O₂

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Desain proses UCT bio-P · Panduan desain

Penebalan & Dewatering Lumpur

Penebalan & Dewatering Lumpur: Rantai Volume WAS ke Cake dan Kebutuhan Polimer

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Penebalan & dewatering lumpur · Panduan desain

Rentang & Akurasi

Pemilihan Rentang & Akurasi Instrumen: Jebakan %FS dan Titik Kerja Emas 40–70 %FS

Target: insinyur instrumentasi stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Rentang & akurasi instrumen · Panduan desain

Filter Tetes

Filter Tetes (Trickling Filter): Volume Media, OLR, HLR, dan Efisiensi NRC

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Desain filter tets · Panduan desain

Pengendap Lamella

Pengendap Lamella (Primary Settler Miring): Luas Pelat, Modul, dan Footprint Kompak

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Desain pengendap lamella · Panduan desain

Pompa Dosing Kimia

Pompa Dosing Klor & Deklorinasi: Dosis, Waduk Kontak, dan Kebutuhan NaOCl

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Pompa Dosing Kimia · Panduan desain

Desain MBBR

Desain Reaktor MBBR: Luas Biofilm Terlindungi, Volume Carrier, dan HRT

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Desain MBBR · Panduan desain

Clarifier Sekunder

Desain Clarifier Sekunder: Selubung 4-Arah (SOR/SLR) ke Luas & Diameter

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Clarifier Sekunder · Panduan desain

Disinfeksi UV

Disinfeksi UV: Dosis Desain, Koreksi UVT, dan Estimasi Daya & Jumlah Lampu

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Disinfeksi UV · Panduan desain

Reuse Air RO

Reuse Air dengan RO Payau: Recovery, Fluks, Tekanan, dan LSI Konsentrat

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~8 menit Alat terkait: Reuse air RO · Panduan desain

Desain SBR

Desain Reaktor SBR: Volume, Siklus, F/M, dan Kebutuhan Oksigen

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~8 menit Alat terkait: Desain reaktor SBR · Panduan desain

Lumpur Aktif

Desain Lumpur Aktif Konvensional: Volume Reaktor, F/M, SRT, dan Oksigen

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Desain lumpur aktif · Panduan desain

Clarifier Lamella

Clarifier Sekunder Lamella: Pengganda Luas, SLR, dan Bilangan Reynolds

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Desain lamella · Panduan desain

Clarifier Primer

Clarifier Primer Persegi Panjang: Luas, HRT, Weir Load, dan Penurunan Beban

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Desain clarifier primer · Panduan desain

Penghilangan P

Penghilangan Fosfor Kimia: Dosis Fe/Al, Lumpur, dan Kebutuhan Alkali

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~8 menit Alat terkait: Dosis P kimia · Panduan desain

Dosis Klorin

Dosis Klorin Desinfeksi: CT, Waktu Kontak, dan Tangki Kontak

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Dosis klorin · Panduan desain

Desain A²/O

Desain A²/O (BNR): Volume Anaerobik/Anoksik/Oksik, SRT, dan Oksigen

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~9 menit Alat terkait: Desain A²/O · Panduan desain

Bak Grit

Bak Grit Berudara: Retensi, Kecepatan, dan Kebutuhan Udara Blower

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~6 menit Alat terkait: Bak grit berudara · Panduan desain

Saluran Oksidasi

Saluran Oksidasi: Volume, F/M, SRT, dan Kebutuhan Oksigen

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Desain saluran oksidasi · Panduan desain

Disinfeksi Ozon

Disinfeksi Ozon: Dosis, Efisiensi Transfer, dan Volume Kontaktor

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Disinfeksi ozon · Panduan desain

Membran UF/MF

Membran UF/MF: Fluks, Luas, Recovery, dan Permeabilitas

Target: insinyur desain stasiun pengolahan air limbah (municipal & industri) di Vietnam, Indonesia, Malaysia, dan Thailand Waktu baca: ~7 menit Alat terkait: Desain membran UF/MF · Panduan desain