Technique and device for treating sewage to reclaimed water

A technology for sewage treatment and reclaimed water, which is applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, permeation/dialysis water/sewage treatment, etc. It can solve the problems of poor stability of integrated membrane system, high engineering cost, Raw water quality fluctuations and other issues, to achieve the effect of low construction and operation costs, lower construction costs and operating costs, and stable operation

Inactive Publication Date: 2008-07-09
张大群
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  • Claims
  • Application Information

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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 pow

Method used

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  • Technique and device for treating sewage to reclaimed water

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Embodiment Construction

[0030] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] Fig. 1 is a schematic diagram of device connection of the present invention.

[0032] As shown in Figure 1, the present invention provides a process for treating sewage into reclaimed water. The process adopts the blending process of fiber filtered water and reverse osmosis water, and the process is carried out in sequence as follows:

[0033] 1) Flocculation and dosing stage: Sewage 1, inorganic coagulant 2 and disinfectant 3 enter the mixer 4 and mix fully at the same time, and the mixed sewage enters the micro-vortex flocculation reaction clarification tank 5 for flocculation sedimentation, clarification and oil separation treatment, and removes Most solid suspended matter floating oil;

[0034] 2).Fiber filtration stage: after the flocculation and dosing stage, the effluent 1-2 overflows into the high-efficiency fiber filter 6 to further remo...

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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...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/44C02F1/52C02F1/50
CPCY02A20/131
Inventor 张大群
Owner 张大群
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