What does an ETP consultant do?

An ETP consultant reviews wastewater flow, pollutant load, treatment objectives, process suitability, sludge handling, reuse requirements, compliance conditions and operating practicality before recommending a design or upgrade.

When is ETP augmentation required?

ETP augmentation may be required when production increases, wastewater quantity or quality changes, outlet values fail, reuse requirements increase or the existing treatment plant cannot handle hydraulic or organic load.

What causes industrial ETP failure?

Common causes include incorrect flow assumptions, incomplete wastewater testing, poor equalisation, shock loading, toxic streams, pH variation, inadequate aeration, sludge problems, wrong dosing and unsuitable treatment technology.

Can an existing ETP be upgraded instead of replaced?

Yes. Existing tanks and equipment may sometimes be retained while bottlenecks in aeration, equalisation, settling, filtration, sludge handling, controls or tertiary treatment are corrected or augmented.

Can SARK review ETP vendor proposals?

Yes. SARK can review vendor proposals for design basis, flow assumptions, process suitability, equipment sizing, utilities, sludge handling, automation, scope gaps and performance assumptions.

How does water audit support ETP design?

A water audit identifies source-wise water use, wastewater generation, reusable streams and avoidable discharge, helping improve ETP sizing, augmentation and reuse planning.

Does SARK support sector-specific wastewater treatment review?

Yes. SARK supports wastewater treatment review for sectors including paper, sugar, textile, chemical manufacturing, C&D waste processing and other industrial facilities.

ETP & Industrial Wastewater Treatment Consultant for Design, Augmentation & Troubleshooting

SARK Engineers & Consultants provides engineering-led consulting for industrial ETP, STP and wastewater treatment systems across India.

We support industries with new ETP design basis, wastewater-treatment planning, ETP augmentation, troubleshooting, vendor proposal review, treated-water reuse and ZLD-linked decisions.

Our approach starts with the actual wastewater — its flow, peak load, BOD, COD, TSS, TDS, pH, oil and grease, colour, chemicals, metals and process-specific contaminants — rather than starting with a standard treatment package.

Support is available for new projects as well as existing treatment plants facing capacity limitations, high operating cost, unstable biological treatment, outlet failures, sludge problems, reuse requirements or production expansion.

ETP Feasibility Report

Pollution Control Consulting

Industrial Water Audits

What Does an ETP and Industrial Wastewater Treatment Consultant Do?

An ETP consultant evaluates how industrial wastewater is generated, treated, reused and discharged before recommending a treatment technology or plant modification.

The assessment may include:

source-wise wastewater generation;
average and peak hydraulic load;
pollutant load;
wastewater segregation;
equalisation;
biological treatment;
physico-chemical treatment;
tertiary treatment;
sludge generation and dewatering;
treated-water reuse;
RO and reject management;
ZLD requirements;
instrumentation and automation;
consent and compliance requirements.

An industrial ETP should not be selected only on the basis of a quoted capacity such as 50 KLD, 100 KLD or 500 KLD.

Two wastewater streams with identical flow can require completely different treatment systems if their COD, TDS, toxicity, oil, colour, metals or process contaminants differ.

Which ETP Consulting Route Does Your Plant Need?

New ETP or STP

For a new industrial project, the first task is to establish the design basis.

This may involve:

wastewater quantity;
source-wise wastewater quality;
peak flow;
treatment objective;
outlet limits;
reuse requirements;
sludge handling;
available area;
utility demand.

Feasibility

Existing ETP Augmentation

Augmentation may be required when:

production increases;
wastewater quantity increases;
wastewater characteristics change;
consent conditions become stricter;
reuse requirements increase;
existing equipment becomes a bottleneck.

The objective should be to determine what can be retained, what must be corrected and what actually needs additional capacity.

Augmentation

ETP Troubleshooting

Troubleshooting may be required when an ETP experiences:

high COD or BOD at outlet;
high TSS;
high TDS;
poor settling;
sludge bulking;
odour;
biological instability;
shock loading;
pH variation;
excessive chemical consumption;
recurring compliance failures.

Vendor Proposal Review

Before major CAPEX is committed, competing ETP proposals can be reviewed for:

design assumptions;
tank sizing;
biological loading;
aeration;
pump and blower duty;
sludge system;
tertiary treatment;
automation;
utilities;
exclusions;
performance guarantees.

This is commercially very valuable and should be native.

FSTP Design for Haridwar Kumbh 2027

SARK Engineers & Consultants is currently involved in the design of a fecal sludge treatment plant (FSTP) for Haridwar Kumbh 2027.

The assignment involves treatment-system design for highly variable, high-strength wastewater conditions expected during a large temporary-event sanitation scenario, with attention to:

hydraulic and pollutant load variation;
high BOD and COD influent conditions;
nitrogen treatment requirements;
shock-load handling;
sludge separation and dewatering;
process robustness;
treatment reliability under fluctuating event loads;
compact and practical plant configuration.

Large-event sanitation systems require a different design approach from conventional municipal or industrial wastewater plants because influent quantity and strength can change rapidly over short periods.

This project reflects SARK’s capability to work on complex wastewater-treatment design where hydraulic variability, organic loading and operational resilience are central to the engineering basis.