ETP & ZLD Civil Works

VRSIPL executes all civil construction works within an ETP — equalization tanks, flash mixing chambers, clariflocculator tanks, MBBR reactor tanks, secondary clarifiers, sand filter and ACF structures, chemical dosing areas, sludge lagoons, centrifuge and filter press rooms, MEE building civil works, ZLD evaporation ponds, control rooms, laboratory buildings, guard rooms, and internal plant roads and drainage. VRSIPL is the civil contractor, not the equipment supplier.

ZLD (Zero Liquid Discharge) is a water management strategy that eliminates liquid waste discharge from an industrial facility by treating and recovering all wastewater. Civil works for ZLD include MEE (Multi-Effect Evaporator) building — a heavy-duty RCC structure housing evaporator equipment — evaporation pond lining works, ATFD (Agitated Thin Film Dryer) platform civil, crystallizer area civil, and all connecting pipework trenches. VRSIPL constructs these ZLD civil structures for chemical and pharma industries in GIDC and MIDC estates.

VRSIPL has executed ETP and CETP civil works across major GIDC industrial estates in Gujarat including Ankleshwar, Vapi, Naroda, Sachin, Vatva, and Dahej, and across MIDC estates in Maharashtra including Ambernath, Tarapur, Butibori, and Taloja. VRSIPL understands the specific norms and layout requirements of each industrial estate authority.

VRSIPL serves pharma manufacturers, dye and chemical companies, textile and processing units, food processing facilities, API (Active Pharmaceutical Ingredient) producers, agrochemical plants, and auto ancillary manufacturers for ETP civil construction — industries with stringent GPCB and MPCB effluent compliance requirements where ZLD is often mandated.

A CETP (Common Effluent Treatment Plant) is a shared treatment facility serving multiple industrial units in an estate, typically built and operated by an industrial association or the estate authority. VRSIPL constructs the complete civil infrastructure for CETPs — large-capacity tanks, multi-stage treatment structures, storage and equalization basins, sludge handling areas, and control buildings — enabling industrial estates to comply with collective discharge standards under CPCB/SPCB norms.

Yes, all ETP civil construction by VRSIPL is designed and executed to support compliance with CPCB and state PCB (GPCB, MPCB) discharge standards. Tank sizing is based on effluent load calculations, hydraulic retention time (HRT), and sludge volume — ensuring the civil structures provide adequate capacity for the process to achieve prescribed effluent quality standards.

An ETP (Effluent Treatment Plant) treats industrial wastewater which may contain chemicals, heavy metals, or biological loads. An STP (Sewage Treatment Plant) treats domestic sewage from residential and commercial areas. A WTP (Water Treatment Plant) processes raw water from rivers or reservoirs for drinking. While all three require RCC tank construction, the tank geometry, chemical resistance requirements, and process configurations differ — VRSIPL has civil construction experience across all three types.

Yes, VRSIPL routinely executes civil works for integrated ETP + ZLD plant systems — where primary and secondary treatment is followed by tertiary treatment and then ZLD technology to achieve zero discharge. VRSIPL coordinates civil construction sequencing across all treatment stages, from inlet sump to MEE building, under a single civil EPC contract.