Model 870 single-stage hydraulic press filter helps Vietnam's dyeing factory reduce sludge and prevent machine frame rusting
Customer background
The customer is a dyeing enterprise in Vietnam, mainly engaged in the dyeing and finishing processing of various chemical fiber fabrics. The factory processes approximately 800 tons of wastewater daily, generating highly water-saturated biochemical sludge and physicochemical sludge. The original plate-and-frame filter press was severely corroded and had poor discharge performance, resulting in high transportation costs for the sludge and frequent equipment failures.
Customer pain points
The moisture content ranged from 78% to 82%, exceeding the local environmental standard of below 75%.
Surfactants and colloidal substances caused sludge to adhere to filter cloth, requiring 15-20 minutes of manual cleaning per batch.
Alkaline wastewater and salt caused carbon steel racks to rust extensively and cylinder bases to leak within one year.
Manual piece-by-piece pulling took over 50 minutes per batch, disrupting wastewater treatment continuity.
Solution
The customer purchased an 870 type one-time opening fully automatic box-type filter press with specialized configurations:
Hydraulic drive pulls all 40 filter plates at once. Unloading time controlled within 12 minutes.
Automatically breaks adhesion between sludge and filter cloth during discharging.
Full enclosure for main beam, cylinder base, and tail plate to resist chloride ion corrosion.
Automatic compensation system and reflux pipeline to reduce material waste.
Usage effect
Moisture Content: Stable at 70% to 73%. Transportation and landfill costs reduced by 18% per ton.
Discharge Efficiency: Filter cake falls off in 3 to 5 seconds. No more manual sludge removal required.
Corrosion Resistance: No rust spots after 3 months. Appearance remains like new.
Capacity Boost: 6 to 7 cycles per shift, nearly doubling the production capacity.
Lower Costs: Filter cloth life extended from 20 to 50 days; zero monthly painting maintenance needed.
Customer review
"The vibration plate function of this 870 filter press is extremely practical. Previously, each shift required a lot of time to clean the sludge that had stuck to the filter cloth. Now, with just one vibration, it all comes off cleanly. The stainless steel coating also eliminates our concerns about corrosion in the workshop. This was a very satisfactory purchase."
The 870 model fully automatic box-type filter press, combined with the high-frequency vibrating discharge system and stainless steel frame enclosure, effectively addresses common problems such as the adhesion of filter cloth to sludge, high moisture content, and equipment corrosion in the dyeing industry. It provides an efficient and reliable solution for industrial wastewater treatment and sludge reduction.