Kosun Machinery, Shield mud treatment expert !

Brief Introduction

Underground diaphragm wall (sand filter) mud recovery system is a kind of equipment system that can carry out a series of purification treatments to mud used in the process of diaphragm wall construction.

In the process of underground diaphragm wall trenching construction, bentonite mud is adopted to retain wall. Mud recovery system is an important part of diaphragm wall tunneling mud circulation system, and its basic function is to reduce or control the content of solid particles in mud. Selecting a suitable mud purification system to purify mud is essential for trench wall stability, trenching speed, concrete pile quality, gear milling abrasion and trenching in gravel stratum. Adopting a modular structure, KOSUN KD Series Diaphragm Wall (Sand Filter) Mud Recovery System is designed for treating various mud used in common construction techniques.



KOSUN diaphragm wall (sand filter) mud recovery system can be effectively used in the following construction applications:

1. Mud grab engineering for retaining pile and diaphragm wall 

2. HDD mud treatment

3. Shield slurry treatment

4. Tunneling

5. Aggregate processing

6. Tailing disposal

Diaphragm wall (sand filter) mud recovery system mainly consists of scalping shaker, primary shaker, desander, desilter, etc., which can effectively remove excavated materials generated in construction process from the bentonite slurry, to keep the slurry property meeting the requirements for recycling.


1. Modular design. Compact structure and easy to disassemble and transport

2. Good process flow. The modular design not only makes the structure layout reasonable, but also optimizes the process flow.

3. User-friendly design. The system is simple in structure and light in weight. Foldable or detachable guardrail and walkways for easy installation and removal

4. Rainproof and dustproof electrical system to ensure construction safety and quality.

With the design concept of “MORE THAN CUSTOMIZED” and oriented to customer demands, KOSUN designs and manufactures diaphragm wall (sand filter) mud recovery system based on customers’ requirements. A key parameter of the system is its capacity. Now, KD-500 model is available.

Introduction to Common Systems

Adopting a modular structure design, KOSUN KD-500 Diaphragm Wall (Sand Filter) Mud Recovery System is designed for treating various mud used in common construction techniques.

KD-500 system consists of scalping shaker module and two sets of desanding modules. Equipped with coarse-mesh screens, the scalping shaker module is used to remove large particles, and the desanding module is equipped with a desander and a primary shaker.

The mud falls into the collecting box via scalping shaker, and then is divided into two sets of desanding modules through two connecting pipes. Each desanding module is equipped with a desander for sand removal from the mud. After two staged treatment, the recycling effect can be achieved.


Max. Capacity: 500m³/h

Max. Mud Density: 1.18g/cm³

Sand Content (measured by elutriation meter): <18%

Temporary Storage Tank Volume: 4.6m³

External Dimensions: 7600×4050×3900mm

Total Power: 212kW


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