Underground diaphragm wall is a kind of trenching machinery used in distant foundation projects on the ground, along the perimeter axis of deep excavation works, under the condition of mud retaining wall, excavate a narrow deep groove, after clearing the groove, hoist and place the reinforcement cage in the groove, then use the conduit method to fill submerged concrete to build a unit groove section, and so on section by section, build a continuous reinforced concrete wall in the underground, as water interception, seepage control, load bearing, and water retaining structure. During the construction of the diaphragm wall, such as digging the trench and lifting the reinforcement cage before the need to use a lot of slurry, and the process of digging the trench and pouring concrete also need to discharge slurry, the discharge of slurry is often treated as waste slurry, wasting resources, and if not handled properly will pollute the environment.

The mud circulation system for diaphragm wall operation can effectively transport and purify the waste slurry generated during the operation through the equipment such as clear water tank, mixer, slurry tank, mixed slurry tank, old slurry treatment tank and slurry pump, so that it can reach the recyclable slurry again.
Mud circulation system in underground diaphragm wall construction. including：Clean pool, mixer, slurry tank, mixed slurry tank, old slurry treatment tank, slurry pump, multiple sections of removable connected sliding track