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Industrial filter cloth, belt press filter, sewage sludge dewatering
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Detailed Description
- Industrial filter cloth, belt filter press, sewage sludge dewatering
Filter type: Belt filter press
Application industry: Domestic sewage
Material description: Sewage
Filter cloth model: 002A
Application analysis of industrial filter cloth in belt filter press for sewage sludge dewatering
With the acceleration of urbanization and the tightening of environmental protection policies, sewage treatment plants are facing increasing pressure in sludge treatment. Sludge, as a byproduct of the sewage treatment process, its dewatering efficiency directly affects the operating cost and environmental performance of the entire sewage treatment system. Among various sludge dewatering technologies, Belt filter press Due to its advantages of continuous operation, low energy consumption, and large processing capacity, it has been widely used in the field of sewage sludge treatment. And Industrial filter cloth As a core component of the filtration system, it plays a decisive role in the dewatering effect.
I. Dewatering challenges of sewage sludge
The sludge produced by sewage treatment has the following characteristics:
- High water content;
- High organic matter content, easy to decay;
- Loose structure, difficult to form filter cake;
- Further disposal is required after dewatering (such as incineration, landfill, land use, etc.).
Therefore, selecting suitable dewatering equipment and efficient filter media is the key to improving processing efficiency and reducing disposal costs.
II. Process advantages of belt filter press
Belt filter press is a continuous dewatering equipment that uses mechanical squeezing and multi-stage filtration, suitable for large-scale treatment of municipal sludge. Its process flow mainly includes:
- Gravity dewatering section ：The raw sludge undergoes preliminary dewatering by gravity on the filter cloth;
- Wedge pre-pressing section ：Slowly compress the sludge to promote water discharge;
- High-pressure squeezing section ：Repeatedly squeeze the sludge through multiple rollers to form a relatively dry mud cake.
This process requires the filter cloth to have Permeability, tensile strength, surface smoothness and Anti-clogging ability Higher requirements are put forward.
III. Technical requirements and selection of industrial filter cloth
The filter cloth in the belt filter press undertakes key tasks such as filtering water and carrying mud, repeated squeezing, and continuous operation. Its performance directly affects the stability of equipment operation and the solid content of the mud cake.
Performance requirements of filter cloth
- High permeability ：Improve processing speed and reduce energy consumption;
- Excellent tensile strength ：Adapt to the long-term tension operation of the equipment;
- Strong chemical corrosion resistance ：Deal with acids, alkalis and organic matter in sewage;
- Good filter cake stripping property ：Avoid mud cake adhesion and improve continuous operation efficiency;
- Stable size, easy to clean ：Guarantee long-term use effect.
IV. Case study of practical application
Taking a sewage treatment plant in a coastal city as an example, the plant treats domestic sewage daily 10 Ten thousand tons, producing about 120 tons / per day. The original system used screw press equipment, the dewatering efficiency was not high, and the operating cost was high. Later, it was replaced with a belt filter press system, and Xiamen Xiadias customized filter cloth was used.
Application effect:
- The solid content of the mud cake increased from the original 18% to 25% above;
- The filter cloth replacement cycle was extended from the original 3 months to 6 months;
- System operating energy consumption reduced 15%；
- The filter cloth runs stably, and the maintenance frequency has dropped significantly.
V. Summary and development trend
Industrial filter cloth, as an indispensable part of the belt filter press system, directly affects the quality and efficiency of sludge dewatering. In the future, with the further improvement of sewage treatment standards, the demand for filter cloth will also tend to be diversified and high-performance, such as:
- Nanometer-level surface treatment filter cloth;
- Self-cleaning low-impedance filter cloth;
- Renewable and environmentally friendly filter cloth materials.
Xiamen Xiadias and other professional manufacturers, relying on 30 Years of industry experience and continuous R&D investment, are leading the development of industrial filtration materials towards high efficiency, long life, and environmental protection, providing more reliable solutions for municipal sludge treatment.
We sincerely looking forward to cooperating with you !
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