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A sewage treatment device for multi-stage non-reflux powdered activated carbon bioactive treatment

The technology of a sewage treatment device and powder activated carbon is applied in the field of improved powder activated carbon sewage treatment device, which can solve the problems of cumbersome process and large amount of sludge, and achieve the effects of efficient removal, reduction of sludge amount and saving of usage amount.

Active Publication Date: 2016-09-07
BEIJING WANBANGDA ENVIRONMENTAL PROTECTION TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of large amount of sludge in the powdered activated carbon treatment method, powdered activated carbon treatment - WAO (Wet Air Oxidation, wet oxidation) system was proposed abroad, which combines many advantages of the traditional powdered activated carbon treatment method, and in appropriate Under the liquid-phase oxidation process of temperature and pressure water, the excess biological sludge is destroyed and the pollutants adsorbed in the powder filler biological sludge are oxidized, that is, the WAO process is organically combined with the powder activated carbon treatment method, so as to realize waste sewage. The recycling and reuse of sludge is a new process that structurally replaces the traditional active wastewater biological treatment process, simplifies the sludge treatment unit, and has no pollutant discharge.
[0005] However, the above-mentioned process is cumbersome, and the amount of sludge is still large, and the nitrogen removal capacity and effect still need to be improved. It is imperative to develop a new simple and efficient process and equipment

Method used

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  • A sewage treatment device for multi-stage non-reflux powdered activated carbon bioactive treatment
  • A sewage treatment device for multi-stage non-reflux powdered activated carbon bioactive treatment
  • A sewage treatment device for multi-stage non-reflux powdered activated carbon bioactive treatment

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Effect test

Embodiment 1

[0039] 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. The first anoxic tank and the second anoxic tank were dosed with activated carbon filler, and the dosages were 1.8g / L and 0.2g / L respectively. Stirring devices are arranged in the first anoxic tank and the second anoxic tank. An aeration device is arranged in the first aerobic tank and the second aerobic tank. There is no internal circulation between each aerobic pool and anoxic pool. The sewage is divided into two streams and enters the first anoxic pool and the second anoxic pool respectively, and the distribution coefficient is n1:n2=6:4. The volume ratio of the first aerobic tank to the first anoxic tank is 2:1, and the volume ratio of the second aerobic tank to the second anoxic tank is 1:1. The remaining bio-carbon sludge in the clarifier is discarded.

Embodiment 2

[0041] 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. The first anoxic tank and the second anoxic tank were dosed with activated carbon filler, and the dosages were 0.6g / L and 0.4g / L respectively. Stirring devices are arranged in the first anoxic tank and the second anoxic tank. An aeration device is arranged in the first aerobic tank and the second aerobic tank. There is no internal circulation between each aerobic pool and anoxic pool. The sewage is divided into two streams and enters the first anoxic pool and the second anoxic pool respectively, and the distribution coefficient is n1:n2=5:5. The volume ratio of the first aerobic tank to the first anoxic tank is 2:1, and the volume ratio of the second aerobic tank to the second anoxic tank is 1.5:1. The remaining bio-carbon sludge in the clarifier is discarded.

Embodiment 3

[0043] 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. Activated carbon filler is added in the first anoxic tank, and the dosage is 1.5g / L. Stirring devices are arranged in the first anoxic tank and the second anoxic tank. An aeration device is arranged in the first aerobic tank and the second aerobic tank. There is no internal circulation between each aerobic pool and anoxic pool. The sewage is divided into two streams and enters the first anoxic pool and the second anoxic pool respectively, and the distribution coefficient is n1:n2=8:2. The volume ratio of the first aerobic tank to the first anoxic tank is 2:1, and the volume ratio of the second aerobic tank to the second anoxic tank is 1:1. The remaining bio-carbon sludge in the clarifier is discarded.

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Abstract

The invention relates to a multistage non-reflux powdered activated carbon bioactive sewage treatment device. The device comprises multistage anoxic and aerobic tanks which are repeatedly connected in series, a flocculating tank and a clarification tank, wherein activated carbon fillers are at least added to the first anoxic tank; in the sewage treatment device, the total dosage of the activated carbon fillers is 0.5-3g / L; the residual biological carbon and sludge in the clarification tank are abandoned. The sewage treatment device has the beneficial effects that by utilizing the designed structure, efficient purification of sewage can be achieved as long as the dosage of activated carbon accounts for at most 50% (even only 10%) of the original dosage, thus effectively reducing the usage amount of activated carbon; besides, efficient removal of nitrogen in the sewage is simply achieved without additionally adding organic carbon sources or internal circulation.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an improved powder activated carbon sewage treatment device and a sewage treatment method thereof. Background technique [0002] The powder activated carbon treatment process 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 adsorbents. Once this method is produced, it is widely used in industrial wastewater due to its advantages in economy and treatment efficiency, such as: oil refining, petrochemical, printing and dyeing wastewater, coking wastewater, and organic chemical wastewater treatment. This method can be used in urban sewage treatment. To improve the nitrification effect, environmental workers from various countries have shown great interest in the powdered activated carbon treatment process and conducted extensive and in-dept...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/52C02F3/30C02F9/00C02F2103/30C02F2103/365C02F2301/08
Inventor 单明军周昆仑寇丽红庄博弘
Owner BEIJING WANBANGDA ENVIRONMENTAL PROTECTION TECH