Chemical waste water discharge-free system

Abstract

The invention discloses a chemical waste water discharge-free system which is characterized by comprising a waste water collecting pool, a secondary sedimentation tank, a user reservoir, a circulation pool, a circulating water system and a user. The secondary sedimentation tank is respectively provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected to the waste water collecting pool, a lift pump is arranged on the water outlet pipe, the water outlet pipe is respectively connected with the user reservoir and the circulation pool through branch pipes arranged at the tail end of the water outlet pipe, and the user reservoir and the circulation pool are connected to the user and the circulating water system respectively through conveying pipes. The chemical waste water discharge-free system can effectively remove dust and impurities carried in waste water, the waste water standing filtering effect is well achieved, the impurity removing effect is good, the waste water recycling rate is high, waste water recycling for many times is achieved, and the chemical waste water discharge-free system has obvious effects for improving surroundings of enterprises and enhancing energy saving and emission reduction of the enterprises.

Description

technical field [0001] The invention relates to a wastewater treatment system, in particular to a chemical wastewater non-discharge system. Background technique [0002] In the iron and steel, coking, and chemical industries, the heat dissipation of circulating water mainly depends on the evaporation of water in the cooling tower, and the heat dissipation of water evaporation accounts for 85%, and the remaining 15% of heat is dissipated by heat conduction and heat radiation. Since what evaporates is pure water, the minerals in the water and impurities such as dust brought in from the bottom of the cooling tower with the air are also left in the circulating water system. After running for a long time, the water quality will deteriorate and block various cooling equipment and pipelines. At present, most manufacturers use filters to remove impurities on the circulating water pipeline, and then flush the filtered impurities with backwash water intermittently and discharge them ...

AI Technical Summary

Problems solved by technology

Not only does it increase water consumption economically and the cost rises, but it also increases the discharge of chemical wastewater in terms of environmental protection, which wastes water resources and is not conducive to energy conservation and emission reduction of enterprises.

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