Answers to the questions we hear most often from clients evaluating a wastewater treatment plant, covering installation timelines, AMC support, plant costs and compliance requirements.
Most standard capacity plants are installed and commissioned within 8 to 14 weeks from design approval, depending on how ready the civil work is at your site.
Yes. We offer AMC packages covering scheduled visits, spares and breakdown support, and O&M packages where our team runs the plant on your behalf if you would rather not manage it in-house.
Yes. Every plant we build starts with a lab test of your actual effluent, not a standard template, so the design fits your industry's real discharge characteristics, whether that is textile dyeing, pharma or food processing.
We retrofit and upgrade existing ETP and STP systems, adding capacity, replacing outdated technology, or fixing designs that were never sized correctly in the first place.
Yes. For sewage treatment, that means meeting CPCB limits like BOD under 10 mg/L and COD under 50 mg/L for discharge into rivers or drains, and for industrial effluent, meeting whatever limit applies to your specific discharge point and industry category. Every plant is designed to these norms as a baseline, with compliance documentation ready for audits, not scrambled together after an inspection notice.
An ETP treats industrial effluent, chemicals, dyes, oils, or process waste that varies by industry. An STP treats domestic sewage from bathrooms, kitchens and washrooms. The pollutant load and treatment process are different, which is why they are separate product lines, not interchangeable systems.
Capacity is based on your actual daily water discharge, not your facility size or headcount alone. We start with a site visit and flow study before recommending a KLD (kiloliters per day) capacity.
We work across scales, from small package plants for individual units and residential societies to larger systems for industrial clients and institutions.
This is exactly why we design for real-world flow variation rather than average load. If you expect significant future growth, tell us during the design phase so we can size for expansion rather than forcing a redesign later.
Yes, budget and compliance are not mutually exclusive if the plant is sized correctly from the start. Most cost overruns come from undersized systems needing rework later, not from doing it right the first time.
Maintenance & AMC
AMC (Annual Maintenance Contract) covers scheduled maintenance visits, spares and breakdown support while your own staff runs the plant day to day. O&M (Operation & Maintenance) means our team operates the plant on your behalf, useful if you do not have in-house technical staff.
Our regional service network is structured to respond to breakdown calls quickly, typically within 24 hours, since a non-functioning treatment plant is a compliance risk the moment it stops running.
This depends on your effluent load and plant design, but most industrial ETPs need sludge handling on a weekly to monthly cycle. We size the sludge handling system during design so this does not become an operational headache later.
MBR membranes do need periodic cleaning and eventual replacement, which is a different maintenance profile than a conventional biological system. We cover this specifically in AMC packages for MBR clients so it is planned for, not a surprise cost.
A well-designed and properly maintained plant should not produce significant odor. Persistent odor issues usually point to either an undersized aeration system or an inconsistent maintenance schedule, both preventable with a proper AMC in place.
Yes, we regularly take over AMC and maintenance for plants built by other vendors, our team assesses the existing setup first so we know exactly what we are maintaining before the first visit.
Products & Design
Physico-chemical treatment uses coagulation, flocculation and sedimentation to remove suspended solids and certain chemicals. Biological treatment uses microorganisms to break down organic matter. Most industrial effluents need a combination of both, the right mix depends on your effluent characteristics.
SBR (Sequential Batch Reactor) treats sewage in timed batches through aeration and settling in the same tank, compact and well suited for medium-sized institutional or industrial applications. MBBR (Moving Bed Biofilm Reactor) uses plastic media for bacteria to grow on, allowing faster treatment in a smaller footprint, useful where space is limited.
Industrial RO plants are sized for higher volume, continuous operation and handle more variable feed water quality, typically used for process water or wastewater recovery. Commercial RO plants are smaller scale, generally for drinking or utility water in offices, hotels or smaller facilities.
MBR (Membrane Bioreactor) combines biological treatment with membrane filtration in one step, producing higher quality effluent in a smaller footprint than conventional systems. It costs more upfront but reduces the space and secondary treatment needs downstream.
If your effluent contains free oil or grease, automotive workshops and some food processing units commonly do, an Oil Water Separator as a pre-treatment stage protects the rest of your ETP from getting overloaded or fouled.
Yes, with the right tertiary treatment stage, treated water from STP or ETP can be reused for gardening, flushing, cooling towers or process water. Well-optimized recycling and ZLD systems commonly recover 90 to 95% of treated wastewater for reuse, depending on source water quality and system design.
Yes, this is where most manufacturers fall short. Every design we deliver starts with lab testing of your specific effluent, so unusual pH, high TDS, or heavy metal content gets accounted for at the design stage, not discovered after commissioning.
Compliance
For sewage treatment, CPCB requires treated water discharged into rivers, lakes or drains to meet BOD under 10 mg/L, TSS under 10 mg/L, COD under 50 mg/L, and Fecal Coliform under 100 MPN per 100 mL. Industrial effluent standards are different and vary by receiving body, general limits for inland surface water allow BOD up to 30 mg/L and COD up to 250 mg/L, while discharge into a public sewer has more relaxed limits since municipal treatment handles further processing. We size every plant to meet the specific limit that applies to your discharge point, not a generic number.
ZLD has been mandated since 2015 for textile, tannery, distillery and pulp & paper industries, with textile units discharging above 25 KLD specifically required to implement it. The mandate has since extended to pharmaceutical API plants, textile units in critically polluted zones, and certain chemical manufacturers, and some states enforce it more strictly for sugar and distillery units near river-sensitive areas. If you fall into one of these categories, or your consent to operate references ZLD, it applies to you, worth confirming directly with your state pollution control board if you are unsure.
This usually points to either an undersized system, a maintenance gap, or a plant that was never properly calibrated for your actual discharge. We can review your existing setup and recommend fixes, whether that means retrofitting, AMC intervention, or a redesign.
We provide the technical documentation and plant specifications typically required for CPCB and SPCB approval processes. The application and approval itself is handled by the client with the relevant board, but we support with whatever technical detail is needed.
Yes, performance reports formatted for CPCB and SPCB audits are part of our standard handover and ongoing AMC service, so you are not scrambling to prepare documentation before an inspection.
Installation
Most standard capacity plants are installed and commissioned within 8 to 14 weeks from design approval, depending on how ready the civil work is at your site.
This depends on plant type and capacity, but generally includes the treatment tank foundation, piping inlets and outlets, and electrical supply points. We share a detailed civil work checklist during the design phase so your site team knows exactly what to prepare.
Our own team handles site erection, piping and commissioning. Fabrication and installation staying in-house is what keeps build quality consistent from the workshop to your site.
In most cases yes, we plan installation sequencing to minimize disruption to ongoing operations, particularly important for facilities that cannot afford downtime. This gets discussed and planned during the installation timeline stage.
Commissioning involves trial runs of the plant under real operating conditions, checking that treated water meets the required discharge or reuse parameters, followed by handover with compliance documentation and an operating manual for your team.
Yes, we regularly retrofit and upgrade existing ETP and STP systems built by other vendors, whether that means adding capacity, replacing failing components, or correcting an undersized original design.