Water treatment combined system in A/O biological reaction tank-artificial wetland

A technology of biological reaction tank and constructed wetland, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of large water volume, low operating cost, and no need for disinfection equipment

Inactive Publication Date: 2011-09-28
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

At present, my country's reclaimed water reuse has just started, the treatment technology is relatively backward, and the operation cost is relatively high

Method used

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  • Water treatment combined system in A/O biological reaction tank-artificial wetland
  • Water treatment combined system in A/O biological reaction tank-artificial wetland

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specific example

[0025] A specific example of the system of the present invention is as follows:

[0026] Coarse grille and water inlet pump room integrated pool, the number of coarse grille is 1, and 3 channels (2 for use and 1 for backup). Flow rate Q=1250m for each fine grid 3 / h, the size of each channel is 7.5m×1.35m, and the depth is 1.5m. The size of the water intake pump room is 2m×3m, and the depth is 3.5m.

[0027] Fine grid and aeration and sand sedimentation pool, the number of fine grid is 1, and 3 channels (2 for use and 1 for standby). Flow rate Q=1250m for each fine grid 3 / h, the size of each channel is 7.5m×1.35m, and the depth is 1.5m. The number of aerated grit chambers is 1, divided into 2 grids and the design flow rate of each tank is Q = 1250m 3 / h, the plane size of the single-cell pool is 10m×1.8m, the depth is 1.5m, and the depth of the sand bucket is 0.5m.

[0028] Contact oxidation pretreatment tank 3 is a reinforced concrete structure, the number is 1, divide...

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Abstract

A water treatment combined system in A / O biological reaction tank-artificial wetland is provided, wherein a filter grid is connected with an aeration grit settling tank, the aeration grit settling tank is connected with a biological contact oxidation pretreating tank, the biological contact oxidation pretreating tank is connected with an A / O biological reaction tank (an anaerobic-aerobic biological reaction tank), the A / O biological reaction tank is connected with a water distributing well, the water distributing well is connected with a secondary settlement tank which is connected with an artificial wetland, and the height of filler in the artificial wetland is not higher than 0.9m. The water treatment combined system can organically combine a biological system and an ecological system, has the characteristics of large water treatment amount, excellent water outlet effect, lower operation cost, ecology, safety and stable water outlet, and does not need sterilizing devices.

Description

technical field [0001] The invention relates to an A / O biological reaction tank (anoxic-aerobic biological reaction tank)-artificial wetland water treatment combined system, which belongs to the field of sewage treatment. Background technique [0002] my country is a country with severe drought and water shortage. The total amount of fresh water resources is 2.8 trillion cubic meters, accounting for 6% of global water resources, ranking fourth in the world after Brazil, Russia and Canada, but the per capita is only 2,300 cubic meters, which is only 1 / 4 of the world average. 1 / 5 of the United States, ranking 121st in the world, is one of the 13 countries with the poorest per capita water resources in the world, and the distribution of water resources in regions is extremely uneven, and the contradiction between water supply and demand is very prominent. Reuse of reclaimed water is one of the main ways to utilize sewage water resources. At present, my country's reclaimed wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/30C02F3/32
Inventor 张列宇席北斗熊瑛何连生
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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