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A kind of sewage biological treatment method

A sewage biological treatment and biological treatment technology, applied in water/sewage treatment, biological water/sewage treatment, water/sewage multistage treatment, etc. High, weaken the bonding strength, improve the effect of utilization

Active Publication Date: 2018-01-05
QINGDAO PACIFIC CHEM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a sewage biological treatment method, which can simultaneously solve the problem of loss of powdered activated carbon and low concentration of activated sludge, and has a treatment device with simple structure, small volume, suitable for Features for industrial applications

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  • A kind of sewage biological treatment method
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Embodiment 1

[0040] The sewage biological treatment method provided in this embodiment includes the following steps:

[0041] Step 1, biological treatment step: biologically treat sewage with activated sludge and magnetic powdery adsorbent to form magnetic powdery adsorbent activated sludge;

[0042] Step two, sludge water separation step: magnetic powdery adsorbent activated sludge sedimentation and water separation;

[0043] Step three, recirculation step: part of the magnetic powdery adsorbent activated sludge is directly recycled into the biological treatment step for recycling, and the remaining part is discharged;

[0044] Step four, recovery step: collect the discharged magnetic powdery adsorbent activated sludge for magnetic mud separation, and finally return the separated magnetic powdery adsorbent to the biological treatment step for recycling.

[0045] Among them, the activated sludge adheres to the magnetic powdery adsorbent in the treatment process of step one to form the magnetic powde...

Embodiment 2

[0055] The difference between the treatment method provided in this embodiment and Embodiment 1 is that the water body separated in step 2 is further subjected to magnetic flocculation, precipitation, and filtration to obtain effluent.

Embodiment 3

[0057] The difference between the treatment method provided in this embodiment and Embodiment 1 is that: 1. The magnetic powder used is ferroferric oxide; 2. The water separated in step 2 is further subjected to magnetic flocculation, precipitation, and filtration to obtain effluent.

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Abstract

The invention belongs to the technical field of sewage treatment, and concretely relates to a sewage biological treatment method. The method comprises the steps of 1, biological treatment; 2, mud-water separation; and 3, return. The method simultaneously solves the powdery active carbon loss problem and the problem of low concentration of activated sludge, and has the characteristics of simple structure, small size, and suitableness for industrial application.

Description

Technical field [0001] The invention belongs to the technical field of sewage treatment, and specifically relates to a sewage biological treatment method. Background technique [0002] The powdered activated carbon biological treatment process PACT (Powdered Activated Carbon Treatment Process) was developed by DuPont of the United States and was first applied in the group. It is recognized as the most promising new wastewater biochemical treatment process and recommended by the US Environmental Protection Agency as an innovative technology The process is being used more and more in the treatment of industrial wastewater such as oil refining, petrochemical industry, printing and dyeing pharmaceuticals, coking wastewater, organic chemical industry, etc. due to its excellent advantages in economy and treatment efficiency. It can be greatly reduced when used in municipal sewage treatment. The volume of the biochemical system significantly improves the ammonia nitrogen removal effect....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/16
CPCC02F1/281C02F1/488C02F3/1215C02F9/00C02F2101/105C02F2101/16C02F2301/08
Inventor 管春光张杰晋文全
Owner QINGDAO PACIFIC CHEM EQUIP CO LTD
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