Environmentally friendly treatment system for industrial tail water

Abstract

The invention discloses an environmentally friendly treatment system for industrial tail water. The system includes a tail water pretreatment unit, a tail water thickening separation unit, a mud dewatering and cake manufacturing unit, a micro solid collection and emergency unit, a clear water collection and pumping unit and a central operation control unit. Through the tail water thickening separation unit, solid-liquid separation of tail water is achieved under conditions of room temperature, atmospheric pressure and no chemical agent, produced clear water is returned to a water supplying system for reuse, and produced high-concentration mud is pumped out through a submerged slurry pump so as to prepare a condition for tail water solid phase dewatering and cake manufacturing; through themud dewatering and cake manufacturing unit, water in mud from the tail water thickening separation unit is removed to produce mud cake having a low water content, the mud cake is conveyed out througha belt conveyer and stacked for storage, and produced clear water is returned to the water supplying system for reuse, thus achieving solid-liquid separation of tail water under conditions of room temperature, atmospheric pressure and no flocculation agent. tail water thickened mud can be dewatered to produce the mud cake having a low water content, and clear water carried by a product, evaporatedand leached in a production process can be completely returned and reutilized.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, and more specifically relates to an industrial tail water environmental protection treatment system. Background technique [0002] A large amount of production tail water, that is, sewage (waste water) containing solid and ionic compounds will be produced in the production process of mine dressing, sand washing and the above industries. It is one of the important sources of domestic environmental hazards, and the treatment technology is difficult. Governance costs are high. At present, there are various domestic technical schemes, which can be basically divided into three categories: (1) technical scheme of rake thickener + tailings pond; (2) technical scheme of deep cone thickener + belt filter press / plate and frame filter; ( 3) Technical scheme of multi-stage sedimentation tank + belt filter press / plate and frame filter. [0003] Among them, the working process of t...

AI Technical Summary

Problems solved by technology

[0020] e. Difficulty in handling micro-solids: Due to the gradual precipitation, the tail solids produced after the second-stage precipitation are in the form of high-concentration mud. Generally, excavators are used to clean them, and tank trucks are used to transport them. There are serious environmental protection problems in mud cake transportation and storage. Hidden dangers and high management costs

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