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Urban sewage treatment unit

A technology of urban sewage and treatment equipment, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of nitrogen removal capacity and effect to be improved, high input cost, sludge Large volume and other problems, to achieve the effect of reducing the amount of sludge, reducing the amount of input, and efficient purification

Active Publication Date: 2015-09-02
BEIJING WANBANGDA ENVIRONMENTAL PROTECTION TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process is cumbersome, and the amount of sludge is still large, the ability and effect of nitrogen removal still need to be improved, the input cost is high, and new simple and efficient processes and equipment need to be developed

Method used

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  • Urban sewage treatment unit
  • Urban sewage treatment unit
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the device of the present invention includes a first anoxic tank, a first aerobic tank, a second anoxic tank, a second aerobic tank, a flocculation tank and a clarification tank. Dosing activated carbon fillers in the first anoxic tank and the second anoxic tank, the dosages are 3g / L and 2g / L respectively, and the particle size is 2-4mm. Both the first anoxic tank and the second anoxic tank are provided with stirring devices. Add suspended fillers in the first aerobic tank and the second aerobic tank, the dosage is 0.3g / L and 0.2g / L respectively, and the specific surface area of ​​the suspended fillers is 300-800m 2 / m 3 . An aeration device is provided in both the first aerobic tank and the second aerobic tank. There is no internal circulation between each aerobic pool and each anoxic pool. The volume ratio of the first anoxic pool to the first aerobic pool is 1:2, and the volume ratio of the second anoxic pool to the second aerobic pool...

Embodiment 2

[0034] Such as figure 2 As shown, the device of the present invention includes a first anoxic tank, a first aerobic tank, a second anoxic tank, a second aerobic tank, a flocculation tank and a clarification tank. Dosing activated carbon filler in the first anoxic tank and the second anoxic tank, the dosage is 1g / L and 0.5g / L respectively, and the particle size is 2-4mm. Both the first anoxic tank and the second anoxic tank are provided with stirring devices. Add suspended fillers in the first aerobic tank and the second aerobic tank, the dosage is 1g / L and 0.5g / L respectively, and the specific surface area of ​​the suspended fillers is 300-800m 2 / m 3 . An aeration device is provided in both the first aerobic tank and the second aerobic tank. There is no internal circulation between each aerobic pool and each anoxic pool. The volume ratio of the first anoxic pool to the first aerobic pool is 1:2, and the volume ratio of the second anoxic pool to the second aerobic pool i...

Embodiment 3

[0036] Such as image 3 As shown, the device of the present invention includes a first anoxic tank, a first aerobic tank, a second anoxic tank, a second aerobic tank, a flocculation tank and a clarification tank. Dosing activated carbon filler in the first anoxic tank, the dosage is 1.5g / L, and the particle size is 2-4mm. Both the first anoxic tank and the second anoxic tank are provided with stirring devices. Add suspended filler in the first aerobic tank, the dosage is 0.8g / L, and the specific surface area of ​​the suspended filler is 300-800m 2 / m 3 . An aeration device is provided in both the first aerobic tank and the second aerobic tank. There is no internal circulation between each aerobic pool and anoxic pool. The volume ratio of the first anoxic pool to the first aerobic pool is 1:2, and the volume ratio of the second anoxic pool to the second aerobic pool is 1:2. The sewage is divided into two streams and enters the first anoxic pool and the second anoxic pool ...

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Abstract

The invention relates to an urban sewage treatment unit by biological treatment of powdered activated carbon. The urban sewage treatment unit comprises a first anoxic tank, a first aerobic tank, a second anoxic tank, a second aerobic tank, a flocculation groove and a sedimentation tank, wherein an activated carbon filler is poured into at least the first anoxic tank and the total dosage of the activated carbon filler is 0.5-3 g / L and its particle size is 2-4mm; a suspended filler is poured into at least the first aerobic tank and the total dosage of the suspended filler is 0.25-1.5 g / L and its specific surface area is 300-800 m<2> / m<3>; and waste treatment is carried out on residual biological carbonaceous mud in the sedimentation tank.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an urban sewage treatment device and a treatment method. Background technique [0002] In today's serious shortage of water resources, urban sewage must be effectively treated in order to achieve renewable and sustainable use of water resources. The powdered activated carbon treatment process has received widespread attention since its inception. This method not only maintains the advantages of the traditional activated sludge method, but also greatly improves the removal rate of organic and inorganic pollutants due to the addition of activated carbon adsorbent. It is widely used in the treatment of industrial wastewater such as: oil refining, petrochemical, printing and dyeing wastewater, coking wastewater, and organic chemical wastewater. Therefore, environmental workers from all over the world have shown great interest in the treatment process of powdered activated carbon and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 单明军周昆仑寇丽红庄博弘
Owner BEIJING WANBANGDA ENVIRONMENTAL PROTECTION TECH