Water treatment
Effluent treatment plants
Effluent treatment plants that treat industrial wastewater through screening, equalisation, physico-chemical and biological stages, filtration and disinfection, so it can be discharged within consent limits or reused on site.
Overview
An ETP is built around the character of the effluent. A typical sequence is bar screening, an equalisation tank to even out flow and load, coagulation and flocculation with primary clarification, biological treatment by activated sludge or MBBR, a secondary clarifier, tertiary sand and carbon filtration and UV or chlorine disinfection. Sludge is thickened and dewatered in a filter press or centrifuge. The design is modular so advanced oxidation, membrane polishing, RO or softening can be added for reuse.
Common effluent treatment plants (CETPs) apply the same principles for clusters of smaller units, collecting effluent by tanker or pipeline into a shared plant with pH neutralisation, clariflocculation and aeration, and RO with multiple-effect evaporation where dissolved solids are high.
Selecting an effluent treatment plant
Design depends on daily volume and variation, the effluent composition (pH, COD, BOD, TDS, oil, colour, heavy metals), the discharge or reuse standard, and how sludge will be disposed of. Treatability tests on real samples are valuable for new or variable streams. Space, power, chemical handling and staffing should be reviewed alongside capital cost.
Range overview
- Types and variants
- Packaged ETP
- Custom-Engineered ETP
- Common Effluent Treatment Plant (CETP)
- Advanced Oxidation Add-On
- Membrane Polishing Add-On
- RO and Multiple-Effect Evaporator for High-TDS Streams
- Materials and grades
- HDPE Pipelines (CETP Collection)
- Size range
- CETP Modular Skids 50–3,000 m³/day
- Custom ETPs Above 1,000 m³/day
- Features
- Equalisation
- Clariflocculation
- Activated Sludge or MBBR
- Tertiary Sand and Carbon Filtration
- UV or Chlorine Disinfection
- Filter Press or Centrifuge Sludge Dewatering
- Automatic pH Neutralisation
Exact specifications depend on the variant, material and size. Confirm ratings and certification against the datasheet or with our engineers before ordering.
Applications
- Discharge Within Consent Limits
- Cooling Tower Make-Up
- Boiler Feed After Polishing
- Landscaping Water
- Shared Treatment for Industrial Clusters
Industries
- Textiles
- Pharmaceutical
- Food and beverage
- Leather
- Chemical
- Paper and pulp
- Electroplating
- Manufacturing
Information that speeds up a quotation
Share what you know. Anything you are unsure of can be marked “not known” — our engineers will help confirm it.
- Feed source
- Flow
- Inlet analysis
- Outlet target
- Recovery
- Site
- Power
- Disposal
- OPEX
Need a datasheet?
Add this family to your enquiry list and mention the variant — we will send the relevant technical documents.
Water treatment
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Frequently asked questions
What information is needed to design an ETP?
Share the daily effluent volume and its peak, a description of the processes generating it, and recent analyses for pH, COD, BOD, TSS, TDS, oil and grease and any metals or colour. State the discharge route or reuse target, available land, and current sludge disposal arrangements. Samples for treatability testing can help where the effluent is new or variable.
When does a common effluent treatment plant make sense?
A CETP suits a group of smaller units, often in an industrial estate, whose individual flows are too small to justify their own full plant. Effluent is collected centrally, which spreads capital and operating costs. It needs agreed inlet limits for each member and a clear operating arrangement, so feasibility depends on the cluster's effluent types and governance.
Ready to specify effluent treatment plants?
Send the details you have — quantities, sizes, drawings or a part number. Unknowns are fine.