Anaerobic aerobic flocculation precipitation sewage treatment process

A sewage treatment, anaerobic and aerobic technology, applied in the direction of flocculation/sedimentation water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of large head loss, unreasonable process, Low infrastructure investment and other issues, to achieve the effect of short hydraulic retention time, simple process flow, and convenient operation and implementation

Inactive Publication Date: 2003-03-05
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the existing sewage treatment process technology, the anaerobic membrane bed is an efficient sewage anaerobic treatment process, which has the advantages of fast start-up, sludge is not easy to lose, and fillers of different materials can be selected, but there is also a long reaction time. , the disadvantage of large pool volume; the biological aerated filter is also an efficient sewage aerobic treatment process. The biggest advantage of the biological aerated filter is that it integrates the functions of biological oxidation and interception of suspended solids, saving the secondary sedimentation tank; In addition, this treatment process also has the characteristics of large volume load, large hydraulic load, small footprint, low infrastructure investment, high oxygen transfer rate, and good effluent quality, but it also has high requirements for the concentration of suspended solids in the influent SS , the water head loss is large, and regular backwashing is required; flocculation and sedimentation is a very mature sewage purification treatment technology, the operation is simple and easy to implement, different sedimentation methods can be selected, and the most e

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  • Anaerobic aerobic flocculation precipitation sewage treatment process
  • Anaerobic aerobic flocculation precipitation sewage treatment process
  • Anaerobic aerobic flocculation precipitation sewage treatment process

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Embodiment 1

[0020] Embodiment of the anaerobic aerobic flocculation sedimentation sewage treatment process of the present invention The main part of the sewage treatment is a square concrete structure, mainly including a swirl type grit chamber, anaerobic membrane bed, aerated biological filter, flocculation reaction zone, vertical flow type Sedimentation tank, sludge concentration tank; swirl type grit chamber is a swirl structure, which can remove some particles and adjust water quality and water quality; the lower part of the anaerobic membrane bed is equipped with sewage distribution pipes and packing brackets, and anaerobic packing is placed ;The lower part of the biological aerated filter is equipped with a backwash pipe (that is, an outlet pipe), a filter plate, an aeration pipe and biological filter material, and the upper part is equipped with a water inlet pipe and a backwash outlet pipe; the flocculation reaction zone adopts a folded plate structure; vertical flow The type sedim...

Embodiment 2

[0027] figure 2 Another process flow of the anaerobic aerobic flocculation sedimentation sewage treatment process of the present invention is shown. This process flow is suitable for sewage treatment with low phosphorus content. After that, it is driven by a water pump into the cyclone grit chamber to remove part of the suspended solids, and then the sewage enters the anaerobic membrane bed through the water distribution pipe for anaerobic biological treatment to remove some pollutants (COD Cr 、BOD 5 ), the residence time of sewage in the anaerobic membrane bed is 2 to 8 hours, and the volume load of the anaerobic membrane bed is 1.2 to 3.6kgCOD / m 3 .d; The water flowing out from the anaerobic membrane bed enters the biological aerated filter for aerobic biological treatment to further remove pollutants (COD Cr 、BOD 5 ), the residence time of sewage in the biological aerated filter is 1 to 4 hours, and the volume load of the biological aerated filter is 2.4 to 7.2kgCOD / m ...

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Abstract

The invented sewage treatment process includes the following steps: making the sewage pass through grill and collecting well firstly, then feeding it into cyclonic settling pin by means of water pump, and making it flow into anaerobic membrane bed to make annaerobic biological treatment, then making the anaerobic-treated sewage flow into aerated biological filter pool to make aerobic biological treatment, then feeding the sewage into flocculation precipitation reaction tank, and discharging it. Said invention uses anaerobic membrane bed and aerated biological fitler pool as main body, uses flocculation precpitation as auxiliary measure, its efficiency is high and technological process is simple, and its application range is extensive.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an anaerobic aerobic flocculation sedimentation sewage treatment process. Background technique [0002] In the existing sewage treatment process technology, the anaerobic membrane bed is an efficient sewage anaerobic treatment process, which has the advantages of fast start-up, sludge is not easy to lose, and fillers of different materials can be selected, but there is also a long reaction time. , the disadvantage of large pool volume; the biological aerated filter is also an efficient sewage aerobic treatment process. The biggest advantage of the biological aerated filter is that it integrates the functions of biological oxidation and interception of suspended solids, saving the secondary sedimentation tank; In addition, this treatment process also has the characteristics of large volume load, large hydraulic load, small footprint, low infrastru...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F3/30C02F9/14
Inventor 胡勇有黄瑞敏汪晓军周勤凌霄
Owner SOUTH CHINA UNIV OF TECH
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