UK HQ Your time

Municipal Wastewater Treatment Flow Diagram

Click any process stage below to view detailed engineering parameters, typical equipment, and design considerations. Flow direction is left-to-right with return activated sludge and side streams shown.

Municipal Wastewater Treatment ProcessRaw SewageCOD 300-600 mg/LSCREENING6-50 mm bar screens1GRIT REMOVALAerated vortex chamber2PRIMARY CLARIFIERLamella or circular3Primary SludgeBIOLOGICAL REACTORAS / MBBR / SBR / MBR4Return Activated Sludge (RAS)SECONDARY CLARIFIERCircular or DAF5TERTIARY TREATMENTFilter / UV / Disinfection6Treated EffluentBOD <15 mg/LSludge Treatment LineTHICKENINGGravity or DAF7DEWATERINGBelt press / Centrifuge8DISPOSAL / REUSELandfill / AD / Incineration918-22% DS Cake
Preliminary / Primary
Clarification
Biological
Tertiary
Sludge
Process Flow
Return Sludge
Side Stream
1

Select a Stage

Click any process stage in the diagram above to view detailed engineering parameters, equipment specifications, and design considerations.

Drinking Water Treatment Flow Diagram

Conventional drinking water Treatment Process from raw water intake through to distribution. Click any stage to explore coagulation, filtration, disinfection, and advanced treatment options.

Drinking Water Treatment ProcessRaw WaterRiver / Reservoir / BoreholeCOAGULATIONRapid mix + flocculation1SEDIMENTATIONLamella or conventional2Clarifier SludgeFILTRATIONSand / Anthracite / GAC3Backwash to Head of WorksDISINFECTIONChlorine / UV / Ozone4CONTACT TANKCT 15-30 min minimum5pHpH CORRECTIONCO2 / Lime dosing6Potable WaterTo Distribution NetworkAdvanced Treatment Options (Post-Filtration)GAC ADSORPTIONTaste, odour, organics7MEMBRANEUF / NF / RO8UV / AOPCrypto, micropollutants9Optional bypass to disinfection
Coagulation / Contact
Clarification / pH
Filtration
Disinfection
Advanced
Process Flow
Return / Bypass
1

Select a Stage

Click any process stage in the diagram above to view detailed engineering parameters, equipment specifications, and design considerations.

Need a Custom Process Design?

Our process engineers develop P&IDs, mass balances, and hydraulic profiles tailored to your raw water quality or wastewater characteristics. From concept through commissioning, we design systems that work.

Flow Diagrams Drawn to Industry Standards

Clear, standards-based flow diagrams are the common language of a treatment project, and we produce them to the conventions engineers, fabricators and operators expect. Block flow diagrams set out the overall process; process flow diagrams add the main streams, equipment and operating conditions; and process and instrumentation diagrams (P&IDs) capture every line, valve, instrument and control loop. Consistent symbols, tag numbering and layout mean anyone picking up the drawings can read them without a key. Drawn properly, these diagrams de-risk procurement, construction and operation alike — they are the reference against which the plant is built, commissioned, operated and, when the time comes, modified.

Industries We Serve

Our expertise spans multiple industries with sector-specific water treatment solutions.