Expert Zero Liquid Discharge Consulting Services in India | SARK Engineers

Are you searching for professional zero liquid discharge consulting to achieve 95-100% wastewater recovery? SARK Engineers & Consultants offers comprehensive ZLD consulting services across India, helping industries eliminate liquid waste, reduce freshwater consumption by 80%+, and achieve complete regulatory compliance with CPCB and State PCB norms.

As India's leading ZLD consultant, we specialize in feasibility studies, technology selection, system design, and implementation support for Zero Liquid Discharge plants across textiles, pharmaceuticals, chemicals, power generation, and manufacturing industries.

Looking for a ZLD consultant near you? Contact SARK Engineers today for expert guidance on achieving zero liquid discharge and transforming your wastewater into a valuable resource!

What is Zero Liquid Discharge (ZLD)?

Technical Approach

Zero Liquid Discharge (ZLD) is an advanced wastewater treatment process that eliminates all liquid effluent discharge from industrial facilities by recovering, treating, and reusing 95-100% of wastewater. Through sophisticated technologies including reverse osmosis, evaporation, and crystallization, ZLD systems convert wastewater into purified water for reuse and solid waste for safe disposal or resource recovery.

Unlike conventional wastewater treatment that discharges treated effluent into water bodies, zero liquid discharge ensures complete water recycling, making it essential for industries in water-stressed regions and those facing stringent environmental regulations.

Key Components of ZLD Systems:

Pre-treatment: Removal of suspended solids, oils, and organic matter
RO/UF Systems: Membrane-based separation for initial water recovery
Evaporation: Thermal or mechanical vapor recompression for brine concentration
Crystallization: Final stage converting concentrated brine to solid salts
Salt Recovery: Extraction of valuable minerals and chemicals

ZLD Technology Options

1

Thermal Evaporation Technologies

Multi-Effect Evaporation (MEE)

Capacity: 10-5000 KLD
Water recovery: 95-98%
Energy consumption: 50-70 kWh/m³
Best for: High TDS (>50,000 ppm)

Mechanical Vapor Recompression (MVR)

Capacity: 5-1000 KLD
Water recovery: 95-98%
Energy consumption: 25-40 kWh/m³ (40-50% less than MEE)
Best for: Medium to high TDS

2

Hybrid ZLD Systems

Combining membrane and thermal technologies:

RO + MEE/MVR
UF + RO + Evaporation
Forward Osmosis + Thermal
Membrane Distillation + Crystallization

Advantages:

30-50% lower energy consumption
Higher water recovery (98-99%)
Better quality treated water
Lower chemical consumption

3

Energy-Efficient ZLD

Latest innovations reducing operational costs:

Solar-powered evaporation ponds
Waste heat integration
Heat pump-based systems
Brine concentrators with energy recovery

Energy Savings: 50-80% compared to conventional ZLD

ZLD Implementation Process

Our Proven 8-Step Methodology

Phase 1: Assessment & Feasibility (Weeks 1-3)

Detailed wastewater characterization
Site assessment and utility availability
Technology evaluation
Preliminary cost estimation
Feasibility report preparation

Phase 2: Detailed Engineering (Weeks 4-8)

Process design and calculations
Equipment sizing and specifications
P&ID and layout drawings
Material selection
Vendor technical specifications

Phase 3: Vendor Selection (Weeks 9-12)

RFP/tender preparation
Bid evaluation
Technical clarifications
Commercial negotiations
Contract finalization

Phase 4: Procurement & Fabrication (Months 4-6)

Purchase order management
Factory acceptance testing (FAT)
Quality inspections
Logistics coordination
Pre-delivery inspections

Phase 5: Installation (Months 7-9)

Civil and structural work supervision
Mechanical installation
Electrical and instrumentation
Piping and utilities
Safety compliance

Phase 6: Commissioning (Months 10-11)

Pre-commissioning checks
Water trials
Wastewater trials
Performance testing
Optimization

Phase 7: Performance Guarantee Testing (Month 12)

Continuous operation trials
Recovery rate verification
Quality parameter testing
Energy consumption validation
Documentation

Phase 8: Training & Handover

Operator training programs
Maintenance procedures
SOP development
O&M manual preparation
Warranty activation

Total Project Duration: 10-14 months (varies by capacity)

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