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High efficiency sewage treatment method

A sewage treatment method, an efficient technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the difficulty of increasing treatment, low sewage reuse rate, membrane fouling Aggravate and other problems, achieve the effect of reducing treatment cost, less mud production, and reducing concentration polarization

Inactive Publication Date: 2016-04-20
QINGDAO BAIJIANCHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Membrane separation technology has been widely used in industrial sewage treatment and reuse. However, membrane separation technology is a physical separation after all. It is just a process of concentrating sewage. At the same time, with the increase of concentration at the concentrated water end, the membrane fouling intensifies, resulting in a low sewage reuse rate, which restricts membrane separation. rapid development of technology

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0023] The source of sewage is wastewater from a pharmaceutical factory, the water quality is COD4000-5000mg / L, BOD1500-2000mg / L. After the sewage is collected, it enters the regulating tank and mixes evenly, and then enters the electrocoagulation tank for electrocoagulation. The water body after electrocoagulation passes through the sedimentation tank, and the sludge settled in the sedimentation tank enters the plate and frame filter press system 4, and the supernatant of the sedimentation tank enters the Submerged ultrafiltration tank, ultrafiltration concentrated water returns to the adjustment tank, ultrafiltration product water enters the reverse osmosis system, part of the reverse osmosis concentrated water returns to the regulation tank, and part of it is discharged. The reverse osmosis product water meets the reuse standard and can be reused for production. Among them, the power supply of electrocoagulation equipment adopts pulse power supply, the mutation pulse period ...

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PUM

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Abstract

Belonging to the technical field of sewage treatment, the invention discloses a high efficiency sewage treatment method. The method includes: collecting sewage, then letting the sewage enter an adjustment tank and mixing the sewage evenly, then subjecting the sewage to electric flocculation in an electric flocculation tank, letting the water from electric flocculation pass through a sedimentation tank, making the sludge settling in the sedimentation tank enter a plate-frame pressure filtration system, letting the supernatant of the sedimentation tank enter an immersed ultrafiltration tank, returning the ultrafiltered concentrate water into an adjustment tank, making the ultrafiltration produced water enter a reverse osmosis system, returning part of reverse osmosis concentrate water to the adjustment tank, and discharging part of the reverse osmosis concentrate water to the outside, and reusing the reverse osmosis produced water in line with the reuse standards in production. The method provided by the invention combines electric flocculation technology with membrane separation technology, and reaches the purposes of improving the produced water quality and enhancing the sewage reuse rate.

Description

technical field [0001] The invention discloses a sewage treatment process, which belongs to the technical field of sewage treatment, and in particular relates to an efficient sewage treatment process combining electrocoagulation technology and membrane separation technology. Background technique [0002] At present, the shortage of fresh water resources and the aggravation of water pollution are one of the five major environmental problems in the world, so water purification and sewage treatment have always been important topics of concern and research in various countries. As a high-efficiency, energy-saving, and environmentally-friendly technology, membrane separation technology has the advantages of low energy consumption, high separation efficiency, no secondary pollution, and simple process. Membrane separation technology has been widely used in industrial sewage treatment and reuse. However, membrane separation technology is a physical separation after all. It is just ...

Claims

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Application Information

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IPC IPC(8): C02F9/06
Inventor 韩君昌
Owner QINGDAO BAIJIANCHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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