Introduction
For manufacturers in metal processing and fastener production, managing industrial effluent responsibly is both an environmental imperative and an operational challenge. A leading fastener manufacturing company recently partnered with Shanghai Junyi Filter Equipment Co.,Ltd to tackle their high-moisture sludge issue. We delivered a fully automated, high-efficiency filtration system centered around a robust 90m² Membrane Filter Press. This case study outlines how our tailored solution transforms wet slurry into disposable cake and clear water.
The Client’s Challenge
The client’s effluent treatment process neutralized acidic wastewater to a pH of 7-8, resulting in a slurry with 80-90% moisture content. Their goal was two-fold:
- Environmentally Friendly Discharge: Obtain sufficiently clean water for safe release.
- Efficient Sludge Handling: Drastically reduce the sludge volume by dewatering it into a dry cake for easy transport to a government stockyard.
Their key questions were clear: What final moisture content could they achieve with different filter press types?
Our Engineered Solution: A Complete 90m² System
We provided a complete, automated filtration package designed for continuous operation in an 8-hour shift, handling a flow of 5,000 liters per hour.
Core System Components & Benefits:
90m² Membrane Filter Press (1000*1000mm Plates):
Superior Dewatering: This is the key to ultra-dry cake. After the initial filtration cycle, the elastic membranes inflate with compressed air, applying high, even pressure (typically 1.5-2 times the feed pressure) to the filter cake. This secondary squeezing action forcibly expels additional capillary water.
Moisture Answer: For this industrial sludge, a standard chamber filter press might achieve cake moisture of ~60-75%. Our membrane filter press is designed to reduce that further to approximately 30-50%, creating a firmer, more manageable, and significantly lighter cake.
Integrated Air Purging & Drying System:
Following the membrane squeeze, an automatic air blow system channels compressed air through the filter plates. This purges residual water from the feed channels and further dries the cake, ensuring optimal solids retention and dryness.
Complete Automation & Support Equipment:
- Automatic Hydraulic Control: Ensures consistent, safe, and hands-free plate opening/closing.
- SS304 Pneumatic Diaphragm Pump (QBK-50): Corrosion-resistant for the neutralized slurry, providing reliable feeding.
- Screw Air Compressor: Supplies all necessary compressed air for the pump, membrane squeeze, and air blow functions.
- PLC Control System: Integrates feed pressure sensors, pneumatic valves, and process sequencing for fully automatic, cycle-optimized operation.
- Z-Type Belt Conveyor: Automatically transports the discharged dry cake for collection.
The Result: A Closed-Loop, Compliant Process
This system transforms the client’s high-moisture slurry into two separate streams:
- Clear Filtrate Water: Suitable for environmentally compliant discharge.
- Compact, Dry Filter Cake: With moisture content dramatically reduced, the sludge volume is minimized, cutting transportation costs and simplifying disposal at the designated government stockyard.
Why Choose Shanghai Junyi Filter Equipment Co.,Ltd for Your Effluent Treatment?
We don’t just sell machines; we provide process-solving systems. From initial analysis to final automation, we engineer solutions that meet specific moisture targets, capacity requirements, and environmental goals.
Ready to solve your industrial sludge dewatering challenge?
Contact Shanghai Junyi Filter Equipment Co.,Ltd. today. Let us analyze your effluent data and design a filter press system that delivers dry results and clear operational advantages.
Post time: Dec-15-2025