Method and system for reducing operation of clean circulating water system

Abstract

The invention provides a method and a system for reducing operation of a clean circulating water system. A clean circulating water circulating system, in accordance with actual demands of production, is divided into the normal-pressure clean circulating water system and a high-pressure circulating system, so that overall operating pressure of the circulating system is reduced; effluent of a sewage treatment station is directly supplied to the normal-pressure clean circulating water system, and rest part is conveyed to a large-capacity reservoir; meanwhile, in order to guarantee steady operation, the normal-pressure clean circulating water system is provided with a buffer tank, so that sudden change in pressure or a flow rate is prevented; the large-capacity reservoir can supply water to the normal-pressure clean circulating water system and the high-pressure circulating system by virtue of a water station, and meanwhile, the large-capacity reservoir is provided with a standby water station so as to avoid accidents; and rest parts, which are directly available, of the normal-pressure clean circulating water system and the high-pressure circulating system are directly returned to the large-capacity reservoir. According to the method and the system for reducing operation of the clean circulating water system provided by the invention, by regulating operating parameters and an operating mode of a clean circulating water system of a large integrated steel & iron plant, a circulating water quantity and circulating pressure can be reduced, so that purposes of energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention relates to the technical field of water resources environmental protection, in particular to a method and system for reducing the volume of water purification systems. Background technique [0002] The iron and steel industry is a major player in water consumption and sewage discharge in the industrial field. Its water consumption accounts for about 14% of the national industrial water consumption, and its sewage discharge accounts for about 12% of the total industrial discharge. The "Outline of the Twelfth Five-Year Plan for National Economic and Social Development" stipulates that during the "Twelfth Five-Year Plan" period, the water consumption per unit of industrial added value needs to be reduced by 30%. At the same time, the Ministry of Water Resources recently stated that "in the future, it is possible to control the total amount of water used by large water users in key areas. After the water consumption quota is used up, the newl...

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Problems solved by technology

[0003] In recent years, with the continuous improvement of the processes of various production users of iron and steel complexes, due to the gradual decrease in water consumption of the atmospheric pressure net ring water system, the pressure of the pipe network has increased from 0.3Mpa to about 0.6Mpa, and the operation mode is still in the previous mo

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