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Detailed Description
- Nylon monofilament filter cloth for sand washing industry
Filter press type: Plate and frame filter press
Application industry: Sand washing
Material description: Sand washing
Filter cloth model: Nylon monofilament









Application analysis of nylon monofilament filter cloth in plate and frame filter press for treating wastewater from sand washing
With the rapid development of infrastructure construction, real estate, and municipal engineering, the demand for sand and gravel aggregates has continued to climb. As an important link in sand cleaning, the sand washing industry is facing increasing environmental pressure. How to efficiently treat sand washing wastewater and achieve mud and sand separation and resource recovery has become a current industry pain point. In this process, the solid-liquid separation technology of plate and frame filter press with high-performance filter cloth is becoming a core means to solve the problem of sand and mud slurry treatment.
Among them, nylon monofilament filter cloth ( Nylon Monofilament Filter Cloth ) has been widely used in the sand washing industry due to its excellent water permeability, tensile strength, and filter cake release. This article will systematically analyze its advantages, application effects, and selection suggestions in plate and frame filter presses.
I. Challenges in sand washing sludge treatment
The sand washing process is usually accompanied by the production of a large amount of muddy water, with the following characteristics:
- Wide particle distribution containing fine sand, silt, and clay particles;
- High solid content usually in 15%~30% ;
- Large particle viscosity easy to clog pipelines and filter cloth;
- High difficulty in reuse Untreated wastewater discharged directly will cause serious water pollution and resource waste.
Under the current " Energy conservation and emission reduction ” and " Waste-free city ” policy background, the traditional sedimentation tank or concentration tank method is difficult to meet the high-efficiency processing requirements. Therefore, Using plate and frame filter presses to dewater and press sand washing sludge has become one of the mainstream technical routes.
II. Material properties and advantages of nylon monofilament filter cloth
Nylon ( PA ) monofilament filter cloth is a filter fabric woven from single nylon filaments. It has the following significant advantages in the treatment of sand washing sludge:
1. Very high mechanical strength
Nylon monofilament has excellent tensile properties and can withstand continuous compression under high pressure in plate and frame filter presses, and is not easily torn or deformed.
2. Excellent water permeability and dehydration efficiency
The monofilament structure determines its high porosity and smooth water flow. While ensuring particle retention capacity, it greatly increases the filtration speed and accelerates the filtration cycle.
3. Not easy to clog, easy to clean
Compared with traditional multi-porous short-fiber filter cloths, monofilament filter cloths have a smooth surface without burrs, are not easily clogged by small particles, and can restore most of their permeability after backwashing, resulting in a longer service life.
4. Good filter cake release
The filter cakes in the sand washing industry are mostly high water content and loose. Nylon monofilament filter cloths, due to their low surface friction coefficient, help the filter cake to automatically fall off or be easily peeled off manually, improving filtration efficiency.
5. Strong wear resistance, suitable for complex working conditions
Sand washing sludge often contains a large amount of coarse sand and quartz particles, which cause great wear and tear on the filter cloth. Nylon material itself has strong wear resistance and is especially suitable for working environments with high coarse particle content.
III. Filter cloth selection and usage suggestions
To improve service life and filtration efficiency, the following measures are recommended:
- Regularly high-pressure wash the surface of the filter cloth to prevent particle accumulation;
- Set up an inlet pre-sedimentation pool to reduce the burden on the filter cloth;
- Use filter cloth edging, corner wrapping, and leak-proof design to prevent sludge leakage;
- Reasonably control the feed pressure and filtration cycle to extend the service life of the filter cloth.
IV. Advantages of Xiamen Xidiasi Filter Cloth Solution
As a leading domestic manufacturer of filtration materials, Xiamen Xidiasi Filtration Materials Technology Co., Ltd. ( CITIUS ) has 30 years of industry experience and is committed to providing high-performance, customized filter cloth solutions 。
for the mining, environmental protection, and water treatment industries. The company's self-developed nylon monofilament filter cloth products have the following advantages:
- Independent weaving, customized specifications Filter cloths of different thicknesses, mesh numbers, and breaking strengths can be woven according to customer equipment and process parameters;
- Special post-processing technology such as heat setting, edging, gluing, and punching, enhance durability and sealing;
- Technical support and on-site service Provide selection suggestions, filter press parameter optimization, and filter cloth replacement training to help customers reduce costs and increase efficiency.
V. Conclusion
With the continuous tightening of environmental protection policies, the requirements for wastewater treatment systems in the sand washing industry are increasing day by day. Plate and frame filter presses combined with high-performance filter cloths, especially Nylon monofilament filter cloth It has become a key tool for solving mud and water separation and efficient dehydration. Choosing the right filter cloth material and structure can not only significantly improve the filtration efficiency, but also extend the service life of the equipment and reduce operating costs.
Xiamen Xiadias will continue to uphold " Technological innovation + Customized service ” With the concept of, providing more forward-looking filtration solutions for the sand washing industry, and jointly building a green and efficient new sand and gravel industry chain with industry customers.
