Chemical Printing and Dyeing Industry Application and Advantages of Filter Press

1. High-concentration Wastewater Treatment
 Application: Treatment of high-concentration suspended solids such as dyes and slurries in printing and dyeing wastewater.
 Advantages: High-efficiency solid-liquid separation is achieved through high-pressure extrusion, COD removal rate is increased by 30-40%, and it meets the GB4287 emission standard.

2. Heavy Metal Sludge Dehydration
 Application: Treatment of heavy metal sludge containing copper, nickel and other heavy metals in chemical electroplating wastewater.
Advantages: Using anti-corrosion polypropylene filter plates, the sludge moisture content after dehydration is ≤65%, reducing the cost of hazardous waste treatment by more than 45%.

3. Dye Intermediate Refining
 Application: Crystallization separation in the production of indigo, disperse dyes, etc.
 Advantages: Closed design prevents oxidation, product purity reaches 99.5%, and filtration efficiency is 2 times higher than that of traditional centrifuges.

4. Acid and alkali waste liquid recovery
 Application: Treatment of acid and alkali etching waste liquid in chemical fiber production.
 Advantages: The corrosion-resistant titanium alloy filter plate can withstand pH1-14 environment and achieve an acid recovery rate of more than 85%.

5. Catalyst recycling
 Application: Separation of palladium-carbon catalysts in PTA production.
 Advantages: Special filter cloth achieves 0.5μm fine filtration, and the catalyst loss rate is reduced to less than 0.3%.

6. Activated carbon regeneration treatment
 Application: Desorption of saturated activated carbon after deep treatment of printing and dyeing wastewater.
 Advantages: Extrusion dehydration efficiency reaches 80%, and the iodine value recovery rate of regenerated carbon is 92%, saving 60% of new material costs.

7. Slurry concentration adjustment
 Application: Slurry recovery in the desizing section of textile pretreatment.
 Advantages: The dynamic filtration system can achieve precise control of slurry concentration to 12-15%, and steam consumption is reduced by 25%.

8. Solvent distillation pretreatment
 Application: Impurity removal of chemical solvents such as DMF.
 Advantages: Pre-coating filter aid technology can achieve 0.2μm particle interception and extend the operation cycle of the distillation tower by 3 times.

9. Nanomaterial separation
 Application: Preparation of chemical grade TiO2 and SiO2 nanoparticles.

Advantages: Ceramic membrane filter press achieves 10nm separation, and the product particle size distribution CV value is ≤5%.

10. Emergency accident handling
 Application: Rapid solid-liquid separation of chemical raw material leakage.

Advantages: The assembly time of the mobile filter press is <2 hours, and the processing capacity is 50m³/h, which meets the needs of sudden pollution disposal.

11. Heat energy recovery and utilization
 Application: High-temperature polymer mother liquor treatment.

Advantages: The supporting waste heat exchange system recovers waste heat above 80℃ and reduces steam consumption by 30%.

12. Intelligent control
 Application: Automatic control of continuous production lines.

Advantages: Integrated PLC+DCS system, realizes real-time control of 20+ parameters such as feed pressure and filter cake thickness, and reduces the failure rate by 70%.

Summary of technical advantages:
 Filter press has become a core environmental protection equipment in the field of chemical printing and dyeing due to its modular design (adjustable processing capacity of 5-200m³), energy-saving characteristics (power consumption per ton of water treated is 0.8-1.2kW·h), and tolerance to special materials (temperature resistance of 150℃/pressure resistance of 1.6MPa). Compared with traditional belt presses, it reduces the floor space by 40% and the operating cost by 35%, promoting the clean production upgrade of the industry under the dual carbon policy.