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High-efficiency application of industrial filter cloth and filter mesh belts in the treatment of mechanism sand washing and sand sludge
Release time:
2025-05-16
High-efficiency application of industrial filter cloth and filter belts in the treatment of mechanism sand washing sludge
—— Empowering green sand and gravel production “ Unsung hero ”
With the widespread application of mechanism sand in urban infrastructure and commercial concrete, the demand for supporting environmental protection treatment is also increasing. Especially in the sand washing process, the discharge of a large amount of mud-containing wastewater and fine-grained sludge not only increases the environmental pressure but also affects the subsequent water cycle and site management. How to efficiently and economically carry out solid-liquid separation and dehydration treatment of sand washing sludge has become a problem that sand and gravel enterprises must face.
In this process, belt press filter and high-performance industrial filter cloth (including industrial filter belt) constitute a key technical combination to solve the problem.
Sand washing sludge: invisible “ pollutants ” hiding processing difficulties
In the production process of mechanism sand, the original stone materials are crushed, washed, and screened, forming a large amount of sand washing wastewater and suspended mud particles, the main characteristics of which are as follows:
- Extremely fine particles, difficult to settle
Contains a large amount of fine-grained sand less than 75μm The efficiency of gravity sedimentation is low, and high-efficiency filter media are needed for processing; - Large concentration fluctuations
Different batches of stone materials and the degree of on-site water circulation affect the changes in sludge concentration, requiring the filter cloth to have wide adaptability; - Organic impurities mixed with sand
Increase the adhesion of the filter cake, putting higher demands on the stripping and corrosion resistance of the filter cloth; - Large processing capacity, fast pace
Sand washing plants mostly operate continuously day and night, requiring the filter cloth and filter belt to have high stability and long life.
Belt press filter: the main equipment for sand washing sludge treatment
As a continuously operating sludge dewatering equipment, the belt press filter is widely used in the sand washing industry. Its core process flow includes:
- Gravity concentration zone Preliminary dehydration to reduce the burden on the later stage;
- Wedge zone Gradual pressure to prevent the mud cake from breaking;
- Multi-stage pressing zone High-pressure dehydration to form a solid filter cake;
- Filter cake stripping and cloth cleaning Maintain stable system operation.
Industrial filter cloth and industrial filter belt play different roles in each section. Among them, the filter cloth is responsible for the actual solid-liquid separation and carrying the mud cake, while the filter belt acts as a structural carrier for supporting the filter cloth and transmitting tension.
Xiamen Citius (Xiamen Citius) Synergistic advantages of industrial filter cloth and filter belt
Xiamen Citius (Xiamen Citius) Filter Materials Technology Co., Ltd. relies on 30 years of experience in the research and development and manufacturing of filter materials, and has launched special industrial filter cloth and belt combination products for the mechanism sand industry to comprehensively improve the filtration efficiency and service life of belt presses.
1. Filter cloth: precise filtration + Smooth cake discharge
- Optimized weaving structure According to the particle size distribution of mud particles, design the appropriate pore size and air permeability to achieve rapid dehydration;
- Surface anti-clogging design Using anti-clogging fiber weaving methods and special coating treatment to reduce the risk of blockage;
- Strong stripping ability Improve the separation efficiency between the mud cake and the cloth surface to maintain continuous and uninterrupted operation;
- Excellent acid and alkali resistance, wear resistance Adapt to the complex components in sand washing wastewater to ensure long-term use.
2. Belt: stable support + Tension transmission
- High-strength polyester / Polypropylene material It has good ductility and tensile strength;
- High-pressure resistant, not easy to deform Support the entire filter cloth structure and maintain smooth operation during multi-stage pressing;
- Easy to clean, easy to maintain Suitable for continuous operation and intermittent backwashing.
3. Customized service and on-site matching
Xiamen Citius (Xiamen Citius) According to the water quality, equipment model, and operating conditions of different sand washing plants, we can provide a complete set of customized solutions from filter cloth width, density, jointing method, to belt tooth shape, edge reinforcement to ensure that each filter line runs more smoothly and energy-efficiently.
Application achievements: Empowering hundreds of mechanism sand plants to upgrade environmental protection
In many mechanism sand plants with an annual output of over one million tons in Fujian, Guangdong, Guangxi and other places, Xiamen Citius (Xiamen Citius) industrial filter cloth and belt combinations are widely used in various domestic and imported belt press filtration equipment, achieving good results:
- Moisture content of mud cake reduced to 30% Below ，for easy transportation and stacking;
- The stable operation cycle of the whole machine is extended to 6 months or more ，reducing the frequency of downtime;
- Filter cloth blockage rate reduced 40%+ ，saving water for cleaning 25%；
- Comprehensive dewatering efficiency increased 15% or more ，significantly saving labor and energy consumption.
Conclusion: From sludge separation to the release of green value
The development of the mechanism sand industry is no longer just a competition of output, but also a contest of environmental protection and efficiency. In this invisible “ filtration competition ” ，Xiamen Dias (Xiamen Citius) provides not only filter cloth and belts, but also solutions that connect environmental protection and production efficiency.
Every choice of filter cloth is an environmental commitment; every completion of filtration is a rebirth of resources.
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