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SBR sewage treatment technology reinforcing synchronous water inflow and drainage

A technology of sewage treatment and process technology, applied in the field of sewage biological treatment process, can solve the problems of high automation control requirements, high requirements for decanters, head loss and waste, etc., to avoid daily maintenance, reduce drainage head loss, and improve utilization rate effect

Active Publication Date: 2015-01-14
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Disadvantages: (1) high requirements for automatic control; (2) short drainage time (intermittent drainage), and the sedimentation sludge layer is not required to be stirred during drainage, so special drainage equipment (decanter) is required, and the decanter (3) The depth of decanting water is generally 1-2m, and this part of head loss is wasted, which increases the total head; (4) Since there is no primary settling tank, scum is easy to be generated, and the scum problem has not been properly resolved solve

Method used

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  • SBR sewage treatment technology reinforcing synchronous water inflow and drainage
  • SBR sewage treatment technology reinforcing synchronous water inflow and drainage

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Embodiment Construction

[0015] Operation mode: through the automatic control system, the SBR reaction pool operates in the following order.

[0016] 1. Water intake and drainage process:

[0017] In the SBR reaction tank as shown in the figure, the raw sewage enters the reaction tank from the water inlet distributor 1 of the SBR reaction tank through the water inlet perforated pipe or the water inlet flower wall. The water level in the reaction tank rises, and the treated effluent is discharged from the outlet weir 2 for reaction. pool. The water intake is generally 1 / 4-3 / 4 of the effective volume of the SBR reaction tank. When the water intake reaches the set value according to the water volume or time, the water intake pump is turned off.

[0018] 2. Mud discharge process

[0019] After the water inflow and drainage process is completed, the sludge pump is turned on to discharge the settled residual sludge out of the SBR reaction tank through the sludge discharge pipe 4, and after a certain amoun...

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Abstract

The invention relates to a sewage biological treatment process, and is mainly applied in urban centralized sewage treatment, decentralized sewage treatment, purification tanks and other sewage biological treatment fields. The technology provided by the invention makes improvements to the SBR process in a sewage biological treatment method. The improvements include the operation mode of an SBR process reaction pool, positions of water inflow and drainage units, and additional installation of a sloping plate (pipe), etc. By adopting the SBR sewage treatment technology provided by the invention, a water decanter special for drainage is not needed, daily maintenance of the water decanter can be avoided, the drainage head loss is reduced, the water inflow and drainage time and the precipitation time can be shortened, and the structure tank volume utilization rate can be improved.

Description

technical field [0001] This invention is aimed at the sewage biological treatment process, and is mainly used in the sewage biological treatment fields such as urban centralized sewage treatment, decentralized sewage treatment, and purification tanks. The SBR sewage treatment process using this patented technology does not require a special decanter for drainage, avoiding the daily maintenance of the decanter, reducing the loss of drainage head, shortening the time of water inflow, drainage and sedimentation, and improving the utilization rate of the pool capacity of the structure. Background technique [0002] With the rapid development of China's rural economy, rural domestic sewage has become one of the main reasons for the deterioration of the rural water environment. Compared with the collection and treatment of urban domestic sewage, rural sewage is scattered and difficult to collect. If the pollution control mode of centralized collection and treatment of urban sewage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/301C02F3/302
Inventor 向连城宋永会吴俊奇田智勇王思宇李剑屏张玉洁
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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