ProductScrew Press Sludge Dewatering
LocationKolkata, West Bengal
Capacity Range1 kg DS/hr to 500 kg DS/hr
Price Range₹5 Lakh to ₹80 Lakh+
Delivery3–10 Working Days
Screw Press in Kolkata
QuaSys Inc. is an authorized dealer and supplier of Screw Press sludge dewatering machines in Kolkata, providing energy-efficient screw press systems for continuous sludge dewatering in sewage treatment plants and effluent treatment plants. Our screw press machines reduce sludge volume by 80–90%, minimising disposal costs for Kolkata clients.
Kolkata is India's third-largest city and East India's commercial and industrial capital. The West Bengal Pollution Control Board (WBPCB) enforces effluent discharge norms for Kolkata's tannery, jute, chemical, and engineering industries. The Hooghly River pollution control remains a priority area for WBPCB and NGT. Kolkata's large residential sector and industrial estates create significant water treatment equipment demand.
✅ QuaSys Inc. — Authorized dealer with 20+ years experience and 500+ installations across India.
We supply genuine Screw Press Sludge Dewatering to clients in Kolkata with fast logistics and post-sales support.
What is a Screw Press?
A Screw Press is a continuous mechanical sludge dewatering machine that uses a slowly rotating screw to compress and dewater biological or chemical sludge from STP and ETP systems. The screw rotates inside a cylindrical filtering screen, advancing sludge from the feed end to the discharge end while progressively squeezing out filtrate water through the screen openings.
Screw press machines operate at very low speed (2–5 RPM), consume less power than filter presses or centrifuges, and generate minimal noise. They operate continuously without operator intervention, require minimal maintenance, and produce dewatered sludge cake with 18–25% dry solids content suitable for composting or disposal.
How We Supply Screw Press in Kolkata
1
Sludge Assessment
We analyse your sludge type, concentration, generation rate (kg DS/day), and space constraints to select the correct screw press model for your Kolkata plant.
2
Complete System Supply
Screw press, polymer preparation unit, sludge feed pump, filtrate collection tank, and control panel supplied as an integrated package.
3
Installation & Commissioning
Equipment installation, polymer dosing optimisation, and performance commissioning to achieve target cake dryness for your Kolkata facility.
4
AMC & Consumables Supply
Screen segment replacement, screw maintenance, polymer supply, and AMC contracts for Kolkata clients over the equipment lifecycle.
Why Choose QuaSys for Screw Press in Kolkata?
✓Continuous operation — no batch cycles, no operator intervention required
✓Very low power consumption — 0.5–3 kW per unit vs 15–30 kW for centrifuge
✓Low noise and vibration — suitable for urban residential society STPs
✓Low maintenance — screen segments are the only wear parts
✓Handles varying sludge concentration without process upset
✓Compact footprint — fits in small STP sludge handling rooms
✓Cake dryness 18–25% DS — suitable for composting or landfill disposal
✓Self-cleaning screen — minimises blockage and manual cleaning
✓Automatic polymer dosing integration — fully automated operation
✓AMC and screen replacement supply available across India including Kolkata
Applications of Screw Press in Kolkata
Municipal STP Sludge
Housing Society STP
Industrial ETP Sludge
Food Processing ETP
Pharmaceutical ETP
Paper Mill ETP
Textile ETP Sludge
MBR Sludge Dewatering
Key Industrial Areas in Kolkata
- Tannery cluster, Tangra
- Jute mills, Hooghly Belt
- WBIDC Industrial Areas
- Salt Lake Electronics Complex
- Bauria Chemical Area
Regulatory Context — Kolkata:
WBPCB enforces CPCB standards. Tangra tannery cluster must meet strict chrome and TDS discharge norms. Hooghly River industries face NGT directions on effluent treatment.
Frequently Asked Questions — Screw Press in Kolkata
What is the price of a Screw Press in Kolkata?+
Screw press prices in Kolkata range from ₹5–8 Lakh for a small 1–5 kg DS/hr unit to ₹40–80 Lakh for large 200–500 kg DS/hr machines. Total installed system cost including polymer unit and panel is 20–30% higher. QuaSys provides detailed quotations for Kolkata clients — call +91 11 29531287.
What cake dryness can a screw press achieve?+
Screw press machines typically achieve 18–25% dry solids content in the dewatered sludge cake. This depends on sludge type (biological vs chemical), polymer dosage, and screen slot size. Biological activated sludge from STPs typically dewaters to 18–22% DS. QuaSys optimises polymer dosing for maximum dryness at your Kolkata plant.
How does a screw press compare to a filter press or centrifuge?+
Screw press: continuous operation, lowest power (0.5–3 kW), lowest maintenance, 18–22% cake DS. Filter press: batch operation, high labour, 30–40% cake DS, higher polymer cost. Centrifuge: continuous, high power (15–30 kW), higher maintenance, 20–25% cake DS. For most STP applications in Kolkata, screw press is the optimal choice on lifecycle cost.
Does the screw press require polymer conditioning?+
Yes. Biological sludge requires polymer (polyelectrolyte) conditioning before screw press dewatering to aggregate fine particles for effective water release. QuaSys supplies integrated polymer preparation and dosing units with the screw press for Kolkata projects, with polymer dosage optimised during commissioning.
How long do screw press screen segments last?+
Screen segments (the cylindrical filtering screen) typically last 3–7 years depending on sludge abrasiveness and operating hours. QuaSys stocks replacement screen segments for common screw press models and dispatches to Kolkata clients for scheduled replacement.
Screw Press in Nearby Cities
QuaSys Inc. supplies Screw Press across India. We also serve these nearby locations:
Other Water Treatment Products in Kolkata
Need Screw Press in Kolkata?
Get in touch with QuaSys Inc. for the best price, fast delivery, and expert technical guidance.
📞 Call: +91 11 29531287
