At the same time, the application of the slurry treatment system also makes it possible to avoid serictous pollution caused by the stacking of muck and waste slurry due to the limitation of the construion site during the shield construction in urban areas. The efficiency of slurry treatment is improved. The quality and progress of the construction have been fully guaranteed, and the muddy water has been effectively analyzed, realizing the secondary use of water resources, reducing pollution and muddy water discharge, while also reducing the construction investment, so that the economic benefits of the enterprise are obtained.
The working process of the slurry treatment system is as follows: First, the mud is screened by the vibration of the two-layer coarse screen of the pre-screen, and the particles with a particle size of 3 mm or more are separated; then the remaining mud is screened by the primary storage pump tank Two sets of first-level cyclones and two slurry pumps are used for auxiliary feeding. The cyclone desander is used to separate the mud, and the sand nozzle at the lower end discharges the smaller sand and falls into the In the fine screen at the lower level, the primary storage tank is used to screen the remaining mud, which can be directly carried into the primary and secondary slurry storage tanks or discharged through the slurry discharge pipe, and flows into the secondary cyclone desander, which enters the slurry pump is pumped into the secondary cyclone desander group, and finally the mud flowing out of the flow port is screened by the fine sieve of the upper desilter screen. After this process, the mud at the bottom of the primary and secondary cyclones is screened After dehydration, the slag and slurry can be separated to a certain extent, and the sieved slurry is stored in the primary slurry storage tank.
KOSUN- China Solids Control Leader&Drilling Waste Management Expert
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