Technique and device for treating sewage to reclaimed water

Abstract

The invention discloses a technique for treating sewage water to reclaimed water and the device thereof, the technique of which includes the following phases: flocculation and dosing phase, fiber filter phase, water distribution phase, integrated module system treatment phase and wine blending phase. The device includes a pipe-line mixer with sequential connection in series, micro eddy flocculation reacting clarification tank, a high effective fabric filter tank, a middle water tank, the integrated module system and a clean water tank. The invention has the advantages that the desalinization of the reverse osmosis device is taken as center, sequentially takes micro eddy flocculation, high effective fabric filtration and ultrafiltration as pretreatment and arranges an original water adjusting tank on the end to secure the stable operation of the reverse osmosis device. Employing mixed water scheme to effectively reduce the manufacturing price and operation cost. The technique provides the technique and the device of the recycling of recirculated cooling sewage water of power plant, the outlet water is taken as the replenishing water of recirculated cooling system of the power plant. The process has the advantages of reasonable design, simple operation and stable work, all the indexes of the outlet water can satisfy the recycling need which has a guiding and referencing meaning for reclaimed water recycling system.

Description

technical field [0001] The invention relates to a process and equipment for treating sewage into reclaimed water, in particular to a process and equipment for treating sewage into reclaimed water by blending multi-stage pretreatment effluent and reverse osmosis desalination effluent. Background technique: [0002] my country's North, Northeast, and Northwest regions are rich in coal resources, but there is a serious shortage of water resources, and the water quality is deteriorating day by day, which has become an important factor restricting the development of electricity in my country's water-scarce areas. In the open circulating cooling water system, the circulating cooling water will cause water loss, and the content of salt, chloride ion, sulfate, calcium magnesium ion and bicarbonate is high, which makes the circulating cooling system have a greater tendency to scale and will cause The heat transfer rate of the heat exchanger is reduced. Thereby produced the contradic...

AI Technical Summary

Problems solved by technology

[0008] The pretreatment process of the existing ultrafiltration / microfiltration (UF / MF) system has the following disadvantages: the project cost is relatively high; during the operation of the power plant, the circulating sewage is often mixed with other production waste water, which makes the raw water quality fluctuate to a certain extent. Poor stability of the integrated membrane system

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