Shield Dregs Treatment

Shield Dregs Treatment System

Shield dregs, also known as shield mud or shield waste soil, is a waste mixture generated by the shield machine during construction. It is mainly composed of excavated soil, mud, additives and groundwater. Shield dregs may contain heavy metals (such as lead, arsenic), oil, chemical additives and other harmful substances. If it is directly piled or landfilled, it may pollute the surrounding soil and groundwater. Untreated wet dregs is prone to dust (after drying) or mud leakage (when wet), affecting air quality and water bodies, so the dregs must be effectively treated.

Shield Dregs Treatment Scheme Description

The shield dregs treatment system is designed to treat the dregs generated during earth pressure shield construction. It can separate sand, fine sand and soil from the waste dregs, dehydrate and dry, reduce the amount of transportation and reuse resources, achieve zero mud discharge and meet environmental protection requirements.

The dregs treatment system adopts a modular design, mainly composed of pulping equipment, coarse shale shaker, sand washer, fine shale shaker, sand removal hydrocyclone, slurry pump and manifold, filter press and other components. The system structure is simple and meets the requirements of transportation and rapid disassembly and assembly. In view of the geological characteristics of high sand and gravel content and the environmental protection requirements of dregs resource utilization, the selection of this set of earth pressure shield dregs treatment system equipment adds a sand washer on the basis of the main equipment such as shale shaker, hydrocyclone, filter press and other necessary equipment for conventional dregs treatment. This type of sand washer can ensure the quality of fine sand separated by the system and can even be directly used in some civil engineering projects. The shield dregs treatment system adopts a balanced closed-loop solution, which can fully realize the recycling of water resources, and no clean water is consumed during the operation of the equipment.

Shield Dregs Treatment System

Advantages of shield dregs treatment system

● Earth pressure shield slag treatment system adopts modular design.
● Simple system structure, to meet the transportation and fast disassembly;
● In view of the geological characteristics with high sand and gravel content and the environmental protection requirements of residue resource utilization, this set of soil pressure shield slag treatment system equipment is selected on the basis of the main equipment necessary for conventional residue treatment, such as vibrating screen, cyclone, filter press, etc., sand washing machine is added. This type of sand washing function ensures the quality of fine sand separated by the system, and can even be directly used in some civil engineering;
● The system adopts a balanced closed-loop scheme, which can fully realize the recycling of water resources, and no water is consumed during the operation of the equipment.、

Application range of shield dregs treatment system

● Soil pressure shield slag treatment
● Construction residue treatment
● River dredging treatment