Highly-efficient stable bio-doubling sewage treatment device

A sewage treatment device and biological multiplication technology, which is used in biological treatment devices, biological water/sewage treatment, aerobic process treatment, etc., can solve the problem of small circulating volume of mixed solution, starvation and death of microorganisms without nutrient sources, and poor adjustability of return ratio. and other problems, to achieve the effect of increasing the hydraulic process and residence time, stabilizing the microbial growth environment, and improving the ability to resist shock loads.

CN102180543BActive Publication Date: 2012-04-18LINGZHI ENVIRONMENTAL PROTECTION CO LTD +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2012-04-18

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Abstract

The invention discloses a highly-efficient stable bio-doubling process sewage treatment device, which is improvement of a bio-doubling process sewage treatment device. The highly-efficient stable bio-doubling process sewage treatment device is characterized in that: an aerobic aeration area is an annular channel, a water propulsion device is arranged in the annular channel, a water-feeding mix reaction area, a water lifting area and a settlement area are internally arranged at the inner side of the annular channel, and the annular channel is respectively communicated with the settlement area and the water-feeding mix reaction area. According to the pool-type structure, the contradiction between low dissolved oxygen amount and high sludge content required by the bio-doubling process is greatly solved, the requirements on a bio-doubling process for low dissolved oxygen amount and high sludge content can be ensured, thus the practical effect and advantage representation of the bio-doubling process are ensured; two or more loops are formed through treatment, thus the involved devices are conveniently overhauled without running stop, and the reflux ratio is adjustable and high; in addition, a controllable gate or valve is additionally arranged between the lifting area and the annular channel, thus practical running adjustability is improved; and after construction or construction finish of the controllable gate or valve, an aeration device is flexibly added, or started / stopped according to water quality, thus the application expandability of the highly-efficient stable bio-doubling process sewage treatment device is good, and adaptability of the highly-efficient stable bio-doubling process sewage treatment device is strong.
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Description

technical field

[0001] The present invention is an improvement to the biological multiplication process water treatment device, in particular to a highly efficient and stable biological multiplication process sewage treatment device which changes the layout of the treatment pool and can form two or more treatment cycles (a co-built biological multiplication treatment device built in an annular ditch) ). Background technique

[0002] The biological doubling process (Bio-dopp) is a novel sewage treatment process invented in Germany, which combines all single processes (biological nitrification, denitrification, phosphorus release, phosphorus absorption, organic matter oxidation, precipitation, etc.) In a rectangular tank with several different treatment units adjacent to each other, low dissolved oxygen (usually 0.3-0.5mg / l) is used to achieve vertical short-range nitrification / denitrification denitrification, and high sludge concentration (usually 5-8g / l) ensures The treatme...

Examples

Embodiment 1

[0033] Example 1, see figure 2 , the efficient and stable biological multiplication process sewage treatment device of the present invention comprises a long strip-shaped hollow rectangular annular ditch 3, the bottom of which is provided with a microporous aerator 5 to form an aerobic treatment functional area, and the inner side of the annular ditch is adjacently arranged from left to right There are: a rectangular precipitation zone 4, an influent mixing reaction zone 1 and an air stripping zone 2. The sedimentation zone 4 is built with an inclined pipe 8 for accelerated sedimentation and separation with a width smaller than the pool width and a driving type scraper and suction machine 9; an underwater mixing propeller 6 is arranged in the influent mixing reaction zone 1 near the end of the sedimentation zone; the gas lift zone 2 is provided with a gas stripping device 7 . The pool wall shared by the airlift area 2 and the annular ditch 3 has a connected opening and a con...

Embodiment 2

[0037] Example 2, see image 3 , as in Example 1, wherein the settling zone 4 is designed as a circular settling tank, and a sludge lift pump 12 is arranged near the settling tank 4 in the influent mixed reaction zone 1 (rotary scraper / suction machine can also be used in the settling tank) ).

Embodiment 3

[0038] Embodiment 3: see Figure 4 , as embodiment 2, annular ditch 3 changes elliptical track type into.