Why is a multi-disc screw press better than a belt filter press?

A multi-disc screw press offers a 90% reduction in wash water, fully automated 24/7 operation, and a non-clogging design.

Can a screw press handle oily sludge from food processing?

Yes. The multi-disc screw press is specifically designed for oily sludge. Its unique structure of fixed and moving rings creates a self-cleaning mechanism that prevents clogging.

How much can a low-temperature sludge dryer reduce sludge volume?

A low-temperature heat pump sludge dryer can reduce sludge volume by up to 80%, shrinking 4 tons of wet sludge into 1 ton of dry granules.

How does Kopay International ensure quality control?

We perform raw material verification, motor performance checks, and a 24-hour factory fatigue test before packing every order.

What is the typical power consumption of a sludge dewatering screw press?

Kopay’s multi-disc screw presses are highly energy-efficient. A model with 300kg-DS/h capacity typically consumes only 1.5kW to 2.2kW.

Why does polymer need a 3-chamber maturation system?

PAM requires 60 minutes of aging to uncoil molecular chains. A 3-chamber system ensures perfect maturation, preventing fish-eyes and saving 20% in chemical costs.

How do micro-bubbles improve Dissolved Air Flotation (DAF) performance?

DAF systems use 20-40 micron micro-bubbles to attach to suspended solids and oils, resulting in a 95%+ removal rate of Fats, Oils, and Grease (FOG).

Are Kopay wastewater systems CE and ISO certified?

Yes. Our production partners maintain ISO9001:2015 and CE certification, ensuring all equipment meets international export safety standards.

Table of Contents

Pig Farm Sludge Dewatering Project in Vietnam | KOPAY Multi-Disc Screw Press Solution

Project Summary:

Industry: Pig Farming / Livestock

Challenge: Severe mechanical clogging & energy waste.

Solution: KOPAY multi-disc screw press (KOPAY-401 series).

Result: 45% energy saving and zero clogging.

1. Project Background

Location: Vietnam
Industry: Livestock & Agriculture (Pig Farming)
Wastewater Type: High-concentration pig manure sludge
Equipment: KOPAY 4-Screw Multi-Disc Screw Press (Model: KOPAY-40x series)
（View the technical specs of our [Multi-Disc Screw Press]）

KOPAY 4-screw dewatering press ready for shipment to a large pig farm in Vietnam

2. The Challenge

The client, one of the leading pig breeding companies in Vietnam, was struggling with a traditional belt filter press system. The primary issues included:

Frequent Clogging: Pig manure contains high amounts of fiber and oil, which constantly clogged the filter cloths.
Low Efficiency: High downtime for manual cleaning reduced the daily processing capacity.
Energy Waste: The old system required high-power pumps and massive water consumption for rinsing.
Odor Control: The open-air design led to significant odor issues, affecting the surrounding farm environment.

3. KOPAY’s Solution

After a technical site assessment, KOPAY provided a customized Multi-Disc Screw Press system. The choice was driven by several technical advantages:

Non-Clogging Design: Our screw press features a self-cleaning mechanism with moving and fixed rings, perfectly handling the fibrous nature of pig manure sludge.
Low Energy Consumption: The equipment operates at a low speed (2-4 rpm), significantly reducing electricity costs compared to centrifuges or belt presses.
Fully Automatic Operation: Integrated with a PLC system, the machine allows for 24/7 unattended operation, saving labor costs for the farm.
Compact & Enclosed: The fully enclosed design minimizes odor leakage and saves valuable space on-site.

4. The Result

Since the installation in Vietnam, the KOPAY screw press has delivered outstanding performance:

Clogging Reduced to Zero: No manual cleaning has been required during normal operation.
Energy Savings: Total power consumption dropped by 45% compared to the previous system.
Improved Sludge Cake Quality: Sludge moisture was reduced from 98% to 75-80%, making it easier for composting and transport.
Sustainability: The farm now recycles the filtrate water for preliminary washing, supporting a circular economy.

Model (KOPAY)	Sludge Throughput (m³/h)	Dry Solids Capacity (kg-DS/h)	Power (kW)	Dimensions (LxWxH mm)
KOPAY-131	0.5 - 1.5(m³/h)	10 - 25(kg-DS/h)	0.55 kW	1950x750x1250mm
KOPAY-201	1.5 - 3.5(m³/h)	25 - 50(kg-DS/h)	0.75 kW	2450x950x1450mm
KOPAY-301	3.5 - 7.0(m³/h)	50 - 100(kg-DS/h)	1.10 kW	3150x1150x1650mm
KOPAY-401	8.0 - 15.0(m³/h)	120 - 240(kg-DS/h)	2.20 kW	4250x1450x1950mm

System Components (Equipment List):

Primary Unit: 1 x [KOPAY-401 Multi-Disc Screw Press] (Customized for high-fiber manure)
Auxiliary: 1 x [Automatic Polymer Dosing Unit (PDU-1000)]
Transfer: 1 x Shaftless Screw Sludge Conveyor (6-meter)
Control: Integrated PLC Automation Cabinet (Siemens Components)

Note: All components are 304 Stainless Steel for maximum corrosion resistance.