Xadiaas CITIUS Practical Application of Industrial Filter Cloth in Solid-Liquid Separation for Municipal Sludge Treatment

—— The core material solution for belt press filter machines

Introduction

As urbanization continues to accelerate, municipal wastewater treatment plants have become critical infrastructure for safeguarding environmental safety and public health. The large volumes of sewage sludge generated during wastewater treatment are highly waterlogged and contain complex organic compounds. If not properly treated and reduced in volume, these sludges can easily lead to secondary pollution and significantly increase transportation and disposal costs. Among the various solid-liquid separation technologies, particularly Belt Press Filter Machine It has become the mainstream equipment in the municipal sludge dewatering process. As a critical operational component, the filter cloth directly determines the equipment's dewatering efficiency, cake solids content, operational stability, and long-term cost-effectiveness.

Xadiaas CITIUS With over 30 years of experience in the research, development, and manufacturing of industrial filtration materials, Xadias has developed a systematic filter cloth solution tailored for municipal sludge treatment. By continuously optimizing filter cloth weaving techniques, surface treatment methods, and durability, Xadias CITIUS Industrial filter fabrics have been widely used in wastewater treatment plants both domestically and internationally, helping to achieve the goals of sludge reduction, resource recovery, and harmless disposal.

Challenges in Municipal Sludge Treatment

Municipal sewage sludge has a complex origin, encompassing both residential wastewater and some industrial effluents mixed in. Its key characteristics are:

1. High water content : The moisture content of untreated raw sludge typically ranges from 95% to 99% Between them, it exists almost in a fluid state, making direct disposal difficult.
2. The particle composition is complex. : The mixture of organic colloids, fibers, inorganic particles, and more makes it difficult to separate the mud from the water.
3. Contains high levels of oils and surfactants : It easily forms an adhesive layer, reducing the permeability of the filter cloth and increasing operational resistance.
4. Dehydration faces significant cost pressures. : Municipal sludge volumes are substantial; if not treated thoroughly, they will significantly increase transportation costs as well as the expenses associated with subsequent landfilling and incineration.

Therefore, the core objective of belt press filters in municipal sludge treatment is to Maintain continuous operational stability On the premise of maximizing sludge cake dewatering efficiency while minimizing operational energy consumption and maintenance costs.

The synergistic effect of belt press filters and filter cloths

The belt press filter, renowned for its continuous operation, low energy consumption, and high degree of automation, is widely adopted in the municipal sludge dewatering field. Its process flow generally includes:

1. Gravity Dewatering Section : The sludge spreads out on the filter cloth, draining naturally by gravity.
2. Wedge-shaped Pre-compression Section : The filter cloths are gradually pressurized from top to bottom, allowing the sludge cake to take initial shape.
3. Deep Compression Stage : By alternately applying pressure through multiple compression rollers, the filter cake is compressed to the greatest extent possible.

In this process, the filter cloth plays a role in Carrying, permeability, interception, and stripping Fourfold function:

• Load-bearing : Requires sufficient strength to withstand mechanical tension and repeated bending.
• Water permeability : Ensures rapid water drainage while preventing particle loss.
• Retention property : Effectively retains fine suspended particles, enhancing the solids content of the filter cake.
• Delamination : The mud cake can detach smoothly, reducing the frequency of cleaning.

It is thus evident that the performance of the filter cloth directly determines the operational efficiency and economic viability of the belt press filter.

Xadiaas CITIUS The advantages of industrial filter cloth

Xadiaas CITIUS The application of industrial filter cloths in municipal sludge treatment offers the following outstanding advantages:

1. High Strength and Durability
   • Using specialized industrial fibers and advanced weaving techniques, the filter cloth boasts exceptional tensile strength and abrasion resistance. Even under continuous high-pressure squeezing, it maintains a stable shape, significantly extending its service life.
2. Optimizing the Balance Between Permeability and Retention
   • The filter cloth structure design focuses on pore size distribution and monofilament arrangement, ensuring both sufficient water permeability and effective retention of fine particles, ultimately forming a dense filter cake.
3. Excellent mud cake release properties
   • Special surface treatment processes ensure that the filter cloth has a smooth, non-clogging surface, reducing mud cake residue and minimizing the frequency of manual cleaning and water rinsing.
4. Chemical resistance and anti-fouling properties
   • Municipal sludge often contains acidic and alkaline substances as well as surfactants, Xadias. CITIUS The filter cloth boasts excellent chemical stability, allowing it to maintain its performance without degradation over the long term.
5. Customized Solutions
   • Based on the sludge characteristics of different regions, Xadias CITIUS We offer a range of differentiated filter cloth models, covering thickness, pore size, edge treatments, and more, ensuring optimal compatibility with our customers' equipment.

Application Cases and Achievements

In practical applications at numerous municipal wastewater treatment plants both domestically and internationally, Xadias CITIUS Industrial filter cloths demonstrate clear advantages. For example:

• A large coastal city's wastewater treatment plant is using Xadias. CITIUS After the filter cloth replaced the original imported one, The cake solids content is increased by approximately 3 Percentage point , the filter cloth lifespan is nearly doubled.
• At a winter-cold wastewater treatment plant in the north, Xadias CITIUS The filter cloth maintains stable water permeability, Effectively reduce winter operational energy consumption , avoiding equipment downtime caused by filter cloth blockage.
• In an application case from a medium-sized wastewater treatment plant overseas, Xadias CITIUS The provided custom filter cloth reduces rinse water consumption. 20% Above all, operating costs have dropped significantly.

These practical achievements demonstrate that high-quality filter cloths can deliver tangible energy savings, cost reductions, and enhanced efficiency throughout the entire sludge treatment process.

Market Trends and Future Outlook

The future development direction of the municipal sludge treatment industry will increasingly focus on the following aspects:

1. Green and Low-Carbon : At “ Dual Carbon ” In the context of strategy, sludge reduction and energy recovery have become key priorities, further highlighting the efficient dewatering role of filter cloths.
2. Intelligent Operation With the advancement of IoT and big data applications, operational parameter monitoring and lifespan prediction for belt press filters and filter cloths will become智能化 (intelligent).
3. Resource-based utilization : Recovering organic matter and nutrient elements from sludge requires more efficient front-end dewatering equipment, as the performance of filter cloths will directly determine the feasibility of subsequent resource recovery processes.
4. Growing demand for internationalization As urbanization accelerates in developing countries, the market size for municipal sludge treatment continues to expand, driving even stronger demand for high-performance industrial filter cloths.

Xadiaas CITIUS We will continue to focus on R&D innovation, leveraging over 30 years of industry experience to deliver more efficient, reliable, and environmentally friendly filter cloth solutions for municipal wastewater treatment.

Conclusion

In the field of municipal sludge treatment, filter cloths are not merely consumables—they are an integral part of belt press filtration machines. “ Heart ” Xadia Sis CITIUS Industrial filter cloths, with their advantages such as high strength, excellent water permeability, chemical resistance, and customization capabilities, are helping an increasing number of wastewater treatment plants enhance sludge dewatering efficiency, reduce operational costs, and extend equipment lifespan. Looking ahead, as the municipal sludge treatment market continues to demand more efficient solid-liquid separation solutions, Xadias CITIUS It will continue to leverage its leadership in the industrial filtration sector, driving the industry toward a greener, smarter, and more sustainable future.

Solid-Liquid Separation – Belt Press Filter Cloth – Municipal Treatment of Domestic Sludge
Filter machine type: Belt press filter
Application Industry: Municipal
Handling material description: Municipal sludge
Filter cloth model used: 006