Municipal Sewage Industry Application and Advantages of Filter Press

1. Core Process of Sludge Dehydration

 As the core equipment of sludge dehydration, filter press can reduce the moisture content of sludge after biochemical treatment from 95%-99% to below 60% through mechanical extrusion and filtration medium, forming a solid mud cake. Compared with the traditional thickening tank process, the dehydration efficiency is increased by more than 40%.

2. Adaptability of multi-stage treatment system
 It is suitable for the connection of various pretreatment processes such as belt, centrifugal, plate and frame, and can treat primary sedimentation tank sludge, residual activated sludge and mixed sludge. The treatment capacity range is 50-500m³/d, meeting the needs of sewage treatment plants of different sizes.

3. Environmental protection standard guarantee
 The dehydrated mud cake complies with the "Standard for Sludge Disposal of Urban Sewage Treatment Plants" (GB24188-2009), effectively controlling the diffusion of pollutants such as heavy metals and reducing the risk of secondary pollution caused by landfill or incineration.

4. Energy-saving and consumption-reducing advantages
 The energy consumption of the new diaphragm filter press is less than 0.8kW·h/m³, which is 30% more energy-saving than the traditional model. It can realize intermittent operation with PLC automatic control and reduce the energy consumption of equipment idling.

5. Reduction of chemical agents
 By optimizing the selection of filter cloth (polypropylene/nylon material) and the control of pressing pressure (0.8-1.5MPa), the amount of flocculants such as PAM can be reduced by 15%-20%, reducing the treatment cost.

6. Emergency treatment capability
 In the rainy season or when the water inflow exceeds the standard, the filter press unit can be quickly started to treat high-concentration mixed sewage, with a treatment efficiency of 5-8m³/h to prevent system collapse.

7. Basis for resource utilization
 The calorific value of the mud cake after dehydration is increased to 800-1200kcal/kg, which meets the requirements of resource utilization such as building materials and incineration power generation, and promotes the "waste to treasure" of municipal sludge.

8. Optimized floor space
 Vertical filter press units save 40% of land compared to traditional dehydration workshops. The modular design facilitates the renovation of old water plants, and a single unit occupies only 15-25㎡.

9. Intelligent operation and maintenance system
 Equipped with an IoT monitoring terminal, it monitors parameters such as filter chamber pressure (0.6-2.0MPa) and filtrate turbidity (<50NTU) in real time, achieving a fault warning accuracy rate of ≥95%.

10. Corrosion-resistant design
 Adopting 316L stainless steel frame and rubber diaphragm, it can withstand corrosive media with pH2-12, with a service life of 8-10 years, reducing the frequency of equipment replacement.

11. Deodorization and antibacterial function
 The closed structure design combined with the biological deodorization module controls the hydrogen sulfide concentration to <5ppm, effectively improving the working environment of the sewage treatment workshop.

12. Convenient maintenance
 The quick-open filter plate replacement time is <2 hours, and the automatic filter cloth washing system extends the service life of the filter cloth to more than 2000 hours, reducing maintenance costs by 30%.

13. Adaptability to water quality fluctuations
 Through the PID pressure regulation system, it can automatically adapt to the inlet water fluctuation of SS concentration of 2000-50000mg/L to ensure stable dehydration effect.

14. Low-carbon emission reduction benefits
 Every ton of dry sludge processed can reduce CO2 emissions by 0.8 tons, helping municipal sewage plants achieve carbon neutrality goals.

Through technological innovation and process optimization, this equipment has become a key equipment for achieving sludge reduction, stabilization and harmlessness in the field of municipal sewage treatment, promoting the transformation and upgrading of the sewage treatment industry towards green and low-carbon.