Jiuding car mounted plate and frame filter press Zhonghao shield tunneling mud separator

Jiuding car mounted plate and frame filter press Zhonghao shield tunneling mud separator

Mud treatment has always been a challenge for environmental compliance and construction efficiency in fields such as construction engineering, tunnel construction, and river management. Vehicle mounted filter press, with its core advantages of maneuverability, high efficiency dehydration, environmental protection and energy saving, has become a powerful tool for mud solidification treatment in scenarios such as pile driving mud, shield tunneling mud, and river dredging. This article will analyze how it can help modern engineering achieve green construction by exploring its working principles, application scenarios, and technical characteristics.

1、 Working principle of vehicle mounted filter press

The core principle of the vehicle mounted filter press is to achieve solid-liquid separation through high-pressure pressing. Its workflow is divided into four major stages:

Mud pretreatment: passing the mud generated at the construction site through a vibrating screen (sieve hole)45-75 μ m) to remove large particle impurities, followed by the addition of coagulants (such as PAM or hydrated lime) to optimize the solid-liquid separation performance of the slurry.

High pressure feeding: The mud pump transports the pre treated mud to the closed filter chamber of the vehicle mounted filter press, with an initial pressure set at0.4-0.8MPa， The liquid is discharged through the filter cloth, and the solid forms a filter cake.

Diaphragm pressing: Activate the secondary pressurization system (pressure)1.6-3.0MPa）， Compress the pores of the filter cake to further reduce the moisture content to 40% -50%. Some models also use high-pressure air flow technology (0.6MPa) to improve dehydration efficiency.

Intelligent unloading: The hydraulic system drives the automatic opening and closing of the filter plate, and the filter cake is transported to the storage area through a belt conveyor. The filter cloth can be reused after being cleaned by a high-pressure water gunOver 500 times, operation and maintenance costs are reduced by 40%.

The power source of the vehicle mounted filter press is usually integrated with the vehicle chassis, supporting dual mode power supply from diesel generators or external power sources, and is suitable for outdoor environments without electricity .

Jiuding car mounted plate and frame filter press Zhonghao shield tunneling mud separator

2、 Typical application scenarios of vehicle mounted filter press

1. Pile driving mud treatment
In the construction of building pile foundations, the moisture content of the mud is as high as95% -98%, direct external transportation is costly and prone to environmental pollution. The vehicle mounted filter press can dehydrate the mud to 45% -50% on site, forming a dry and hard mud cake with a volume reduction of 60%. The COD removal rate of the separated clean water after quartz sand filtration exceeds 90%, and it can be recycled for pile foundation cooling or site dust reduction. The single machine processing capacity can reach 50m ³/h, saving 10-20 yuan/cubic meter in cost compared to traditional methods.

2. Solidification of shield tunneling slurry
The mud generated during tunnel shield construction has high viscosity and high sand content, and traditional equipment is prone to clogging. Vehicle mounted filter press adopts modular filter plate design (filter cake thickness)35-50mm）， Combining multi port feeding technology to achieve continuous operation. Taking Shenzhen Metro Line 12 as an example, the mud cake processed by the equipment has a solid content of ≥ 35% and can be directly used for roadbed filling, with a filtrate reuse rate of over 70%.

3. River dredging and management
For the treatment of black and odorous sediment, the vehicle mounted filter press can be quickly deployed to the riverbankThe integrated process of "dredging dewatering resource utilization" reduces the moisture content of sludge from 80% to below 40%. In a river treatment project in Changsha, Hunan, the equipment processes 1500m ³ of silt per day, and the separated clear water reaches NTU ≤ 10. The mud cake is used for green soil improvement, and the water quality has been upgraded from poor V to V standard.

3、 Technological advantages and industry adaptability

Mobility and Compact Design
Vehicle mounted filter press integrated in17.5-meter flatbed truck can be deployed in 30 minutes. The filter plate adopts standardized sizes (630 × 630mm to 2000 × 2800mm), supports quick disassembly and assembly, and is suitable for DN300-DN2000 pipe diameter dredging needs.

Corrosion resistance and high load-bearing capacity
The filter plate material is mainly made of fiberglass or reinforced polypropylene, which is resistant toPH 1-14 strong corrosive environment, with a lifespan of over 10 years. The hydraulic system pressure can be extended to 3.5MPa to meet the requirements of high viscosity mud treatment.

Intelligent control
The PLC system monitors pressure, flow rate, and filter cake thickness in real-time, and the AI algorithm dynamically optimizes the pressure filtration curve, reducing the failure rate by 70%. Some models support remote monitoring of the Internet of Things, achieving unmanned operation.

Low pollution: The entire process is sealed to prevent transportation leakage and odor diffusion, in compliance with the environmental protection requirements of the "Technical Regulations for Maintenance Safety of Urban Drainage Pipelines";

Cost reduction: Taking the Bao'an District project in Shenzhen as an example, the amount of sludge transported outside has been reduced35%, saving over 2 million yuan in transportation and disposal costs annually.