• Xiadis Filter Cloth Manufacturer: Application of Belt Press Filter Cloth—Municipal Wastewater Filtration and Domestic Sludge Treatment
  Filter type: Belt press filter
  Application industry: Municipal wastewater
  Material description: Domestic sewage sludge
  Filter cloth model: 005

Application and Value of Xadias Filter Cloth and Belt Press Filtration Systems in the Treatment of Municipal Sewage and Domestic Sludge

As China’s urbanization accelerates and wastewater treatment standards continue to rise, the treatment of municipal sludge has become one of the core challenges facing municipal wastewater treatment systems. Traditional concentration and dewatering processes face significant difficulties when handling large volumes of municipal sludge, including high energy consumption, difficulty in reducing the moisture content of the sludge cake, and high operational costs. As a critical consumable in solid-liquid separation equipment, —— Filter cloth—its performance directly affects dewatering efficiency, operational stability, and overall costs. 2026 Year, domestic leading filter cloth manufacturer Xiadis Filtration Materials Technology Co., Ltd. Technological practices in this field provide crucial support for belt press filtration technology in municipal sludge treatment.

I. Market Background: Challenges in Urban Wastewater Treatment and Sludge Dewatering

Driven by China’s “Emission Standards for Pollutants from Urban Wastewater Treatment Plants” and various enhanced policies, the scale of wastewater treatment continues to expand, while simultaneously placing high demands on reclaimed water utilization and waste reduction. As an inevitable byproduct of wastewater treatment, domestic sludge typically has a very high moisture content—often reaching as high as... 96 More than %—if effective dewatering cannot be achieved, not only will it occupy a large amount of space, but it will also increase the costs associated with subsequent transportation, incineration, or landfill disposal.

Traditional sludge dewatering in residential areas commonly employs equipment such as plate-and-frame filter presses, screw presses, and centrifuges. However, in medium- and large-scale municipal wastewater treatment plants, Belt Press Filter Due to its features of automated operation, continuous processing capability, and low energy consumption, it has become a popular choice. Among these systems, the filter cloth used in belt presses—the core component that is constantly in contact with sludge and subjected to mechanical pressure and chemical environments—directly determines the overall system’s dewatering performance and long-term operating costs based on its quality and durability.

II. Core Requirements and Challenges of Filter Cloth Technology

Sewage sludge has the following characteristics:

• High viscosity, complex solid-liquid interface High content of organic matter, colloids, and fine particles, which easily clog the pores of the filter cloth;
• High moisture content, highly deformable High mechanical strength and tensile performance are required for filter cloths;
• Harsh operating environment : Must be acid- and alkali-resistant, abrasion-resistant, and resistant to repeated cleaning as well as corrosion by chemical agents.
• Strong demand for continuous operation The filter cloth must have a long service life and low-maintenance characteristics.

Therefore, a high-quality filter cloth must simultaneously possess high water permeability, excellent anti-clogging performance, stable membrane formation characteristics, good cleanability and regenerability, and sufficient mechanical strength.

III. Analysis of the Technical Advantages of Xadias Filter Cloth

As a leading player in the domestic filter cloth manufacturing sector, Xiadis boasts multiple advantages in filter material R&D, textile structure design, and engineering application practice:

1.  Multi-layer structural design enhances dewatering efficiency.

Based on the rheological properties of municipal sewage sludge, Xadias has developed... Composite multilayer filter fabric structure This structure rapidly traps large-particle sludge in the outer layer, forms a stable pre-filtration membrane in the middle layer, and provides support and drainage functions in the inner layer, allowing the filtrate to pass through swiftly while preventing fine particles from clogging the main filtration layer.

This design not only enhances the instantaneous permeability but also prevents the common issues of hardening on the filter cloth surface and sludge rebound, thereby improving the solid content of the filter cake and overall dewatering efficiency.

2.  Optimize fiber arrangement to enhance anti-clogging performance and cleaning/regenerative capability.

By precisely controlling the fiber arrangement and mesh size, Xadias ensures that the filter cloth surface exhibits... Ordered microporous channels During the sludge dewatering process, this structure effectively reduces the deep embedding of colloidal substances and fine particles. Not only does this structure enhance the filter cloth’s resistance to clogging, but it also allows cleaning water to penetrate more deeply into the filter layer, improving the filter cloth’s regeneration performance and extending its service life.

3.  High-strength substrate with chemically corrosion-resistant modification

Flocculants are used during the dewatering process of sewage sludge. pH Chemicals such as regulators; therefore, filter cloths must possess... Acid- and alkali-resistant, chemically corrosion-resistant performance. Xadias utilizes an advanced high-strength polymer substrate and undergoes surface modification treatment, enabling the filter cloth to maintain stable tensile strength and anti-aging performance even under prolonged continuous operation and repeated cleaning cycles.

IV. Practical Applications in Belt Press Filters

1.  Increase the solid content of sludge discharge and reduce the moisture content.

In the engineering practice of dozens of municipal wastewater treatment plants, belt presses equipped with custom filter cloths from Xadis can, on average, dewater domestic sludge to a significantly reduced moisture content. Solid content increased 10 More than % , reduce the moisture content to 65 Less than %. Compared to conventional filter cloths, the consumption of filter cloth per unit of solid output is reduced, resulting in higher overall dewatering efficiency.

Increasing the solid content not only reduces sludge transportation costs but also enhances the calorific value and economic viability of subsequent incineration or resource utilization.

2.  Reduce the number of operation and maintenance activities and the input of chemical agents.

Thanks to its excellent anti-clogging and regenerative performance, the overall cleaning frequency of the filter cloth has been significantly reduced, and the consumption of chemical cleaning agents has also decreased accordingly. This is particularly crucial in belt systems operating continuously on a large scale, as it can substantially lower daily operation and maintenance costs.

3.  Stable and continuous operation enhances overall processing capacity.

The belt press system is essentially a continuous processing system that places extremely high demands on the stability of filter cloth performance. The enduring stability demonstrated by Xadias filter cloths under actual operating conditions enables the entire dewatering system to operate continuously even under heavy loads, while also reducing downtime and adjustments caused by fluctuations in filter cloth performance.

V. Brief Description of Engineering Cases

In a wastewater treatment plant renovation project in a first-tier city, the plant introduced several belt press filters and selected custom-made filter cloths from Xadias to complement them. Post-renovation operational feedback:

• Nissan increases sludge treatment capacity. 30 More than % ；
• The average moisture content has been reduced to 64 About % ；
• The filter cloth replacement cycle has been extended to the original. 1.5 Twice ；
• Annual comprehensive operating costs have decreased by more than 15 % 。

This case fully demonstrates the direct contribution of filter cloth technology to the overall improvement of equipment performance.

VI. Industry Trends and Future Outlook

As the trend toward resource utilization of sludge intensifies, sludge pretreatment processes will become increasingly sophisticated and efficient. As one of the cornerstone technologies in solid-liquid separation, the continuous technological advancement of filter cloths will continue to drive innovation throughout the entire dewatering system.

In the future, as materials science and intelligent manufacturing converge, filter fabrics will evolve in the following directions:

• Smart monitoring materials : Achieve real-time monitoring and health assessment of filter cloth performance status;
• Micro- and nano-functional enhancement Enhance selective filtration and anti-fouling capability;
• High-durability modified fiber Further extend service life and reduce maintenance.

As a leading domestic industry player, Xiadis is continuously increasing its investment in technological R&D, collaborating with customers to optimize solutions, and promoting the deepened application of belt press filtration technology in the municipal sludge sector.

VII. Conclusion

In the dewatering treatment of municipal sewage and domestic sludge, filter cloths are not only part of the equipment... “ Consumables ” Moreover, it is a core technological node that significantly impacts efficiency and costs. 2026 In recent years, domestic leading manufacturers represented by Xadias have laid a solid foundation for the reliable operation of belt press filters in dewatering municipal sludge, thanks to their multi-layer composite structural design, optimized fiber arrangement, durable materials, and engineering practices that have been rigorously validated.

In the future, as technology continues to advance, the synergistic optimization of filter cloths and pressing systems will become a key pathway for municipal sludge treatment toward greater efficiency, resource recovery, and智能化 (intelligentization).