Effluent Treatment Plant Manufacturer — India
Turnkey ETP design, supply and commissioning for food, FMCG, pharma, textile and chemical industries — CPCB-compliant systems from 5 KLD to 5,000 KLD, with ZLD capability and post-commissioning O&M support
Industry Overview
Effluent Treatment Plant Manufacturer — India
Spans Envirotech Pvt. Ltd. is an established effluent treatment plant manufacturer in India with over three decades of continuous operation since 1993. Our core business is the design, supply, and commissioning of industrial ETPs for the food and beverage, FMCG, pharmaceutical, textile, chemical, and municipal sectors. With more than 300 completed projects and reference clients including Britannia Industries, Hindustan Unilever, Lotte India, KRBL Limited, and Devyani Food Industries, Spans brings proven execution capability across plant sizes from 5 KLD packaged units to 5,000 KLD integrated treatment complexes.
An effluent treatment plant is the regulatory baseline for any industrial facility discharging process wastewater in India. Under the Water (Prevention and Control of Pollution) Act, 1974, and the Environment Protection Act, 1986, industrial units must treat effluent to CPCB/SPCB prescribed standards before discharge to surface water bodies, municipal sewers, or land. Non-compliance exposes plant operators to closure notices, financial penalties, and criminal liability. Spans designs ETP systems that achieve compliance from commissioning day — not as a best-case scenario, but as an engineered guarantee backed by process guarantees.
India's industrial wastewater challenge is not homogeneous. Food processing generates high-BOD effluent with fats, oils, and greases at BOD 500–8,000 mg/L. Pharma manufacturing produces solvent-laden, biologically inhibitory streams. Textile dyeing generates colour and TDS-intensive wastewater. Chemical plants produce complex, often toxic effluents with heavy metals. Each industry requires a tailored treatment approach — and Spans has sector-specific process knowledge developed across hundreds of projects. We do not apply a generic template; we engineer each ETP to the specific wastewater profile, discharge requirement, and site constraints of the client's facility.
Our ETP design process begins with a thorough wastewater characterisation study — inlet BOD, COD, TSS, pH, TKN, phosphorus, oil & grease, and any sector-specific parameters. From this baseline, we develop a process flow diagram, hydraulic loading assessment, biological sizing (using F:M ratios and MLSS targets), chemical dosing requirements, and sludge generation calculations. Equipment selection — whether DAF, MBBR, MBR, activated sludge, or SBR — is based on effluent characteristics, space available, operational complexity tolerance, and ZLD requirements. Civil design is coordinated with the client's structural engineer, and all civil drawings are provided as part of the package.
Industry Challenges
Key Environmental Challenges
High-Strength Industrial Effluent
Food and FMCG effluent can carry BOD up to 8,000 mg/L and COD up to 15,000 mg/L — 20–40× stronger than domestic sewage. Biological treatment must be sized for peak organic loading while maintaining consistent performance during low-production periods.
Variable Hydraulic and Organic Loads
Production schedules, CIP cleaning cycles, and seasonal demand create large swings in both flow rate and pollutant concentration. Adequate equalisation — typically 8–24 hours of hydraulic retention time — is essential to buffer these variations before biological treatment.
CPCB/SPCB Compliance and ZLD Mandates
Industries in water-stressed zones, near sensitive water bodies, or in specific regulated sectors face ZLD mandates from CPCB and SPCBs. ETP designs must be ZLD-ready or integrate RO and thermal evaporation (MEE/MVR) from the outset.
Sludge Management
Industrial ETPs generate significant volumes of biological and chemical sludge that must be dewatered and disposed of per Hazardous Waste Rules. Volute press or belt filter press dewatering reduces sludge volume to 18–22% dry solids for cost-effective transport and disposal.
Space Constraints at Brownfield Sites
Retrofitting ETPs into operating manufacturing facilities presents space challenges. Compact process designs using MBBR or MBR — which achieve the same treatment in a fraction of the footprint of conventional activated sludge — are essential for brownfield installations.
Skilled Operations and Maintenance
Industrial ETPs require trained operators for chemical dosing, biological process control, membrane maintenance, and regulatory monitoring. Spans' post-commissioning O&M support and AMC services address this operational capability gap at many client sites.
Our Solutions
Tailored Wastewater Treatment Solutions
Turnkey ETP Design & Build
Complete ETP project execution from process design through commissioning: inlet works (screening, grit removal), primary treatment (equalisation, DAF or lamella clarifier), secondary biological treatment (MBBR, MBR, or activated sludge), clarification, tertiary filtration (PSF + ACF), sludge dewatering, and treated water storage. All civil and mechanical drawings included.
Dissolved Air Flotation (DAF) for FOG Removal
High-efficiency DAF units for primary removal of fats, oils, greases, and suspended solids in food industry effluent. Available in 5–500 m³/hr configurations with automatic polyelectrolyte and coagulant dosing systems. Removes 85–95% of FOG before biological treatment.
MBBR Biological Treatment
Moving Bed Biofilm Reactor systems for robust aerobic biological treatment. MBBR carriers (K5, K3, Kaldnes media) provide 800–1,200 m²/m³ of active biofilm surface. Achieves BOD reduction from 2,000 mg/L to <50 mg/L in combined systems. Compact footprint, no sludge recycle.
MBR Systems for Reuse Quality
Membrane Bioreactor systems combining biological treatment with hollow-fibre ultrafiltration (pore size 0.04–0.1 µm) to produce permeate with TSS <1 mg/L, BOD <5 mg/L. Suitable for cooling tower, utility washing, or RO feed applications.
Zero Liquid Discharge (ZLD) Integration
ETP systems designed for ZLD integration: MBR or conventional biological + tertiary RO recovers 65–75% of water, followed by MEE or MVR evaporation to achieve 90–97% total recovery. Complete ZLD packages designed per CPCB ZLD guidelines.
Packaged ETP Systems
Pre-engineered, modular ETP packages for capacities of 5–50 KLD. Fully assembled and factory-tested skid units with integrated control panels, minimising site installation time. Suitable for hotels, hospitals, small food factories, and remote sites.
Technologies
Proven Technologies for Your Industry
Benefits
Why Choose Spans for Your Industry
- 30+ years of ETP design and commissioning experience across India
- Sector-specific process expertise — not a generic template
- Reference clients including Britannia, HUL, Lotte India, KRBL, and Devyani
- CPCB/SPCB-compliant systems with process performance guarantees
- ZLD-ready design with RO and evaporation integration
- Compact MBBR/MBR layouts for brownfield installations
- Complete project execution — engineering, procurement, civil coordination, installation, commissioning
- Post-commissioning O&M support and Annual Maintenance Contracts
- Operator training and 24/7 remote monitoring capability
- In-house process design team — no outsourced engineering
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