01
Quantity
Average, peak and batch flow; operating hours; future capacity and equalisation requirement.
Industrial ETP, STP & Reuse Preparation
Wastewater Treatment
Treatment systems developed around the actual hydraulic load, pollution load, stream chemistry, operating variability and required destination of the treated water.
ETP and STP water trains remain separate from inlet through polishing and recycling. The correct process begins with segregation and a verified design basis.
Discuss Your WastewaterView the Engineering ApproachWastewater Treatment ArchitectureSEPARATE ETP & STP TRAINS
01Segregate & CharacteriseIndustrial ETP streams kept separate from sanitary STP streams
02Deactivation / ConditioningAMR or deactivation where required; flow, pH and toxicity control
03Primary TreatmentNeutralisation, coagulation, clarification and oil/solids removal
04Secondary TreatmentAerobic, anoxic, MBBR, activated sludge or MBR as applicable
05Tertiary & PolishingFiltration, membranes, adsorption, oxidation and disinfection
06Recycle / ZLD / SolidsSeparate reuse trains; ETP reject to ZLD; compatible sludge to drying
Separate ETP Recycle · Separate STP Recycle · ETP ZLD Interface · Controlled Solid Discharge
Hydraulic StabilityManage peak and variable flow
Pollution-Load ControlCOD, BOD, solids, nutrients and toxicity
Biological ReliabilityProtect biomass and oxygen balance
Treated-Water QualityMatch discharge or reuse requirement
Sludge AccountabilityControl production, dewatering and disposal
Design Basis
Establish what enters the plant and where the treated water must go
02
Quality
COD, BOD, TSS, TDS, pH, oil, nutrients, colour, temperature and specific contaminants.
03
Variability
Product campaigns, cleaning, shutdowns, shock loads, toxicity and seasonal changes.
04
Required Outlet
Discharge consent, reuse application, recycle-treatment feed or ZLD interface.
Process Flow Diagram
Separate ETP and STP water trains from inlet through recycle
Industrial effluent and sanitary sewage must remain hydraulically separate throughout treatment, polishing and recycling. Only compatible dewatered sludge may be brought to a common drying or disposal system after technical and regulatory confirmation.
Treatment Systems
Complete facilities or defined process packages
Industrial Effluent Treatment
ETP systems for manufacturing wastewater with physical, chemical, biological and tertiary stages.
- Equalisation and neutralisation
- Primary clarification or DAF
- Biological treatment and polishing
Sewage Treatment
STP systems for domestic wastewater from industrial, institutional and commercial facilities.
- Anoxic and aerobic treatment
- MBBR, activated sludge or MBR
- Disinfection and reuse preparation
High-Strength Wastewater
Dedicated conditioning or recovery routes for high-COD, solvent-bearing, saline or difficult streams.
- Source segregation
- Stripping or physicochemical treatment
- Thermal-treatment interface
Tertiary Treatment & Reuse
Polishing systems developed around the intended reuse application and downstream sensitivity.
- Media and activated-carbon filtration
- UF, RO and disinfection
- Colour and trace-organic control
Retrofit & Expansion
Capacity increase, process correction and equipment upgrades for operating facilities.
- Hydraulic and load assessment
- Aeration and clarifier review
- Phased tie-ins and continuity planning
Performance Improvement
Structured review of treatment stability, cost, compliance and operator control.
- Mass balance and root-cause review
- Chemical and energy optimisation
- SOP, testing and training support
Technology Selection
Use the mechanism required by the contaminant and operating condition
The final train may combine several technologies. Selection depends on treatability, footprint, energy, sludge generation, operator capability and the required treated-water quality.
Physical SeparationScreening, oil separation, settling, clarification, DAF and filtration.
Chemical TreatmentpH correction, precipitation, coagulation, oxidation and reduction.
Biological TreatmentAerobic, anoxic, activated sludge, MBBR, SBR and MBR processes.
Advanced PolishingActivated carbon, UF, RO, ion exchange and advanced oxidation where required.
Advanced Treatment & Innovation
Connect difficult wastewater challenges with the appropriate technology pathway
Advanced Oxidation TechnologiesExplore YWT’s platform of oxidation, catalytic, enzymatic, biological-intensification and separation innovations.VIEW THE TECHNOLOGY PLATFORM →Catalytic Electro-oxidationElectrochemical and catalytic oxidation pathway for selected difficult contaminants.EXPLORE TECHNOLOGY →Spark OxidationAdvanced oxidation route considered for feed-specific contaminant transformation.EXPLORE TECHNOLOGY →Enzymatic OxidationEnzyme-assisted treatment pathway for suitable complex organic streams.EXPLORE TECHNOLOGY →E2 HydrolysisChemical-deactivation pathway for selected compounds before downstream treatment.EXPLORE TECHNOLOGY →Activated AerationIntensified aeration and biological-treatment approach for applicable wastewater duties.EXPLORE TECHNOLOGY →Air Assisted BuoyancyEnhanced separation pathway using controlled air-assisted flotation behaviour.EXPLORE TECHNOLOGY →Green Float STPCompact sewage-treatment approach developed around effective solids and biological management.EXPLORE TECHNOLOGY →
Technology selection is feed-specific. Treatability testing, pilot validation or representative wastewater trials may be required before commercial design and performance commitments.
Sludge & Residuals
Account for the solids produced by treatment
A treatment plant is incomplete unless sludge generation, concentration, dewatering, storage and disposal are incorporated into the design and operating plan.
- Primary and biological sludge quantities
- Thickening and conditioning requirement
- Filter press, screw press or other dewatering route
- Filtrate and centrate return-load management
- Temporary storage, handling and disposal interface
- Records, housekeeping and EHS controls
CollectSeparate primary, chemical and biological solids
ThickenReduce hydraulic volume before dewatering
ConditionSelect polymer or chemical treatment as required
DewaterProduce manageable cake and controlled filtrate
StoreProvide safe containment and housekeeping
DisposeRoute through the applicable authorised channel
Operating Control
Make deviations visible before treatment performance is lost
Hydraulic ControlFlow, peak load, equalisation level, bypass prevention and retention time.
Biological ControlDO, MLSS, sludge age, nutrients, settleability and toxicity indicators.
Quality ControlpH, COD, BOD, solids, colour, nutrients, conductivity and outlet quality.
Asset ControlBlowers, pumps, mixers, membranes, instruments, dosing and preventive maintenance.
Project Pathway
From wastewater data to a stable operating plant
01. CharacteriseStreams, flows, loads and operating variability
02. TestTreatability and pilot work where required
03. EngineerMass balance, process design and interfaces
04. BuildProcure, fabricate, install and inspect
05. CommissionStart, seed, stabilise and establish controls
06. SupportTrain, monitor, troubleshoot and optimise
Engagement Models
Support matched to the facility requirement
Engineering, procurement, fabrication, installation, commissioning and handover within agreed battery limits.
A specific ETP, STP, biological, tertiary, sludge or reuse package integrated into the larger facility.
Assessment, retrofit, capacity improvement, stabilisation, training and ongoing technical or manpower support.
Connected YWT Capabilities
Extend treatment into reuse, recovery and sustained operation
Define the treatment process around your actual wastewater
Share the source-wise flows, analytical data, production pattern, present treatment arrangement, discharge or reuse objective, available utilities and site constraints. YWT India will develop the appropriate assessment and engineering pathway.
Discuss Your Wastewater Requirement
