Advanced treatment method for urban middle water as industrial recirculated cooling water

Abstract

The invention discloses a deep processing method of urban recycled water by using it as industrial cycling cooling water comprising the steps of, the urban recycled water being collected and entering the recycled water pool, then entering pressure type mixer, entering into clarification tank, liming by wet method for softening, condensation, settlement and automatic de-sludging, the output water flowing into the circular double chamber filter, then entering clean water tank through pressure type mixer, the clean water being pumped to the cycling water pump discharge pressure tube after the compensator to be used for re-circulated cooling water system.

Description

(1) Technical field [0001] The invention relates to a water treatment method, in particular to an advanced treatment method for urban water used as industrial circulating cooling water. It is especially suitable for supplementary water treatment of industrial circulating cooling water in electric power, petrochemical, metallurgy and other industrial sectors. (2) Background technology [0002] my country's research on the reuse of drainage from urban sewage treatment plants was included in the national scientific research projects as early as 1958. In the 1960s, the research on sewage irrigation reached a certain level. Water cities have successively carried out experimental research on sewage recycling for industrial and civil use, and have achieved certain results, but there are still few successful applications in industrial cooling water. Only a few power plants use urban reclaimed water advanced treatment as cooling water for power plants. of supplemental water. [0003]...

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Problems solved by technology

This mud discharge method is difficult to ensure the normal operation of the clarifier, because the amount of sludge in the clarifier changes with the water volume and water quality, and the timing mud discharge method cannot accurately grasp the mud discharge time and mud discharge, so that the clarifier The effluent water quality of the pool is difficult to guarantee

[0017] The backwashing effect of the square filter adopted in the prior art is not good

Operation practice has proved that when the square filter is backwashed, the effect of backwashing in the four corners is not good, which will easily lead to fouling of the filter material and increase the turbidity of the effluent

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