Erode's textile processing belt — Bhavani, Perundurai, Chennimalai, Komarapalayam across the river, and the units around Erode town — sits alongside the Cauvery and Bhavani rivers. Protecting these rivers has made zero liquid discharge a key requirement for many dyeing, bleaching and processing units in the region. Intellect Aqua designs, upgrades and operates ZLD systems for Erode industries that keep units compliant and recover the maximum water for reuse.
What ZLD Requires
Under ZLD, no effluent leaves your premises. Wastewater is treated, clean water is recovered for reuse, and the remaining salts and solids leave as dry waste. This demands a reliable chain of treatment stages, each protecting the next.
Our ZLD System
Effluent Treatment
Equalisation, neutralisation, chemical treatment and biological treatment remove colour, suspended solids and organics. See textile ETP for Erode and ETP for other industries.
Tertiary Treatment and UF
Sand, carbon and ultrafiltration protect the membranes from fine particles and colloids.
Multi-Stage RO
RO in two or three stages recovers most of the water for reuse in processing.
Evaporation
RO reject is concentrated in a Multiple Effect Evaporator (MEE) or Mechanical Vapour Recompression (MVR) system, and the condensate is reused.
Crystallisation and Salt Recovery
The concentrate is crystallised and dried. In reactive dyeing units, recovered salt can be reused where quality allows.
Designing ZLD That Works Every Day
ZLD plants fail when one stage is weak. Our design approach:
- Test effluent across many batches, not just one sample
- Size the ETP for worst-case batches
- Design RO recovery with safety margin against scaling
- Size evaporators for real reject volumes
- Share a full mass balance before you invest
- Train operators and set up daily logs at commissioning
Controlling ZLD Cost
Evaporation is the most expensive stage, so maximising RO recovery is the biggest lever. We also:
- Segregate low-TDS streams so they bypass the evaporator
- Choose MEE or MVR based on your steam and power costs
- Optimise antiscalant and cleaning programmes
- Recover salt to reduce purchase and solid waste
Upgrading Existing ZLD Plants
If your ZLD plant runs below design recovery, your membranes foul quickly or your evaporator cannot keep up, we audit the plant, test each stage and prepare a fresh mass balance. Improving pre-treatment and RO performance often restores stable operation without major new equipment.
Common Effluent Treatment Plant or Individual Plant?
Some Erode units are members of common effluent treatment plants with ZLD; others run individual plants. Members of a common plant may still need pre-treatment and must meet inlet norms. Individual plants carry full responsibility for compliance. We help you understand your obligations and design accordingly.
What a ZLD Feasibility Study Includes
- Effluent characterisation across normal and peak batches
- Treatment scheme from ETP to evaporation and drying
- Mass balance showing water recovered at each stage
- Equipment list and plant layout
- Steam, power, chemical and cooling water needs
- Capital cost and monthly running cost
- Options to reduce cost, such as stream segregation and salt recovery
With these numbers, you can make a confident decision and compare vendor quotes fairly.
Running a ZLD Plant Day to Day
A ZLD plant needs disciplined daily operation. Operators must watch RO pressures and recovery, dose antiscalant correctly, clean membranes on time, monitor evaporator performance and record everything. We train your team at commissioning and can provide our own operators. Good daily habits are the difference between a ZLD plant that runs and one that is constantly in trouble.
Records and Compliance
ZLD plants are inspected closely. We set up daily logs for flow, recovery, chemical use, evaporator operation and solid waste so your unit can show consistent compliance at any time.
Operation and Maintenance
ZLD needs skilled daily operation. Our O&M contracts include operators, membrane cleaning, chemical management, evaporator monitoring and spares. See our AMC service.
Why Erode Units Choose Intellect Aqua
- Coimbatore head office within easy reach of Erode
- Textile ETP and ZLD experience across western Tamil Nadu
- Complete scope from ETP to evaporator
- Honest mass balance and running-cost estimates
- 15+ years of industry experience and 700+ projects
Areas We Serve
We build and upgrade ZLD systems across Erode district — Bhavani, Perundurai, Chennimalai, Erode town, Gobichettipalayam, Kodumudi, Modakurichi and nearby Komarapalayam and Pallipalayam.
We also build ZLD plants in Tiruppur, Karur, Coimbatore and Salem.
Request a ZLD Audit or Feasibility Study
Share your effluent volume, processes and current setup. We will prepare a report with mass balance and cost estimates.