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Small manual box-type filter press is used for sludge dewatering
2026-01-23
1 Customer Background and Core Requirements
A client conducted a small-scale sludge dewatering experiment in a laboratory environment, aiming to provide a reliable basis for end-users to customize industrial-level treatment solutions through precise dewatering data. This scenario imposed extremely high requirements on the miniaturization, stability, filtration accuracy, and operational convenience of the equipment.
The client explicitly stated that they needed to conduct dewatering experiments on various samples such as biochemical sludge from municipal wastewater treatment plants and sediment sludge from chemical wastewater, with an initial moisture content of approximately 95% to 98%, and a target filter cake moisture content of ≤ 60%. They also required the filtrate to be clear and free of obvious suspended matter to ensure the accuracy of the experimental data.
Due to the limited space in the laboratory (the reserved area is only 1.5m × 1.2m), the equipment must be designed for miniaturization; at the same time, the single processing volume is only 5-20L, requiring the filtration area to precisely match small batch samples to avoid waste of resources or incomplete processing. Moreover, the operation of the equipment should be simple and intuitive, making it easy for non-professional equipment operation researchers to quickly master and use it.
2 Solution: 1㎡ Filtration Area 380 Type Manual Box-Type Filter Press
Based on the comprehensive requirements of customers for space, processing capacity, data accuracy and operational convenience, we recommend the use of the 380 model manual box-type filter press with a filtration area of 1 square meter. This model highly aligns with the laboratory environment in the following aspects:
Precision Matching for Small-Scale Trials
With a 1㎡ filtration area, each batch of 5-20L sludge can complete the entire process of feeding, pressing and discharging within 30 minutes. This not only avoids the inefficiency of small-scale equipment but also eliminates the energy waste and insufficient utilization of filter chambers when large-scale equipment is handling small samples. It perfectly suits the laboratory's small-batch and multi-batch experimental rhythm.
Compact Structure, Stable Performance
The external size of the filter plate is 380mm × 380mm. The overall equipment is small in volume and perfectly fits the laboratory space reserved by the customer. It adopts a box-type structure, with excellent sealing performance, which can effectively reduce the moisture content of the filter cake to below 60%, and has a high recovery rate of filtrate and good clarity, fully ensuring the repeatability and accuracy of experimental data.
Easy to Operate and Maintain
The filter plate is made of polypropylene, which is easy to disassemble and assemble. The discharge is thorough, facilitating quick switching between different sludge samples and avoiding cross-contamination. It adopts manual hydraulic pressing and manual plate pulling for discharging, with a clear process and easy for researchers to master and operate.
3 Overview of Key Parameters
The filtration area of this model is 1 square meter, and the volume of the filter chamber is approximately 15 liters. The filter plate material is polypropylene, and it consists of 6 filter plates (including 1 head plate and 1 tail plate), with an inner diameter of 320×320mm and an outer diameter of 380×380mm. It is equipped with 5 filter cloths made of PP750B material, and the designed thickness of the filter cake is 30mm. The main frame is made by carbon steel welding and coated with anti-corrosion coating. The designed pressure is 1.0 megapascal. The feeding method is center feeding, and the filtrate discharge can be in either open flow or closed flow form. The overall structure of the machine is sturdy, taking into account both corrosion resistance and ease of operation, and is very suitable for small-scale sludge dewatering experiments in laboratory environments.
This equipment not only meets all the explicit requirements of the customers, but also takes into account the experimental efficiency and data reliability, providing a solid data foundation for the subsequent process scaling-up.