Net cage type biological carrier, immobilized microbiological treatment sewage device and application of immobilized microbiological treatment sewage device

A technology of immobilized microorganisms and biological carriers, which is applied in the field of immobilized microorganisms to treat sewage and cage-type biological carriers, can solve the problems of affecting air-water permeability, small specific surface area, and low biological load, and achieve good Environmental and economic benefits, strong impact resistance, and large specific surface area

Active Publication Date: 2015-06-24
北京三泰正方生物环境科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Due to the shortcomings of inorganic carriers such as small specific surface area, high resistance, low hydraulic load, easy clogging, and frequent backwashing, most of them are currently only used for low-load sewage treatment or advanced sewage treatment.
Although most of the above-mentioned organic carriers have small resistance, high hydraulic load, and are not easy to clog, they affect the treatment effect due to their small specific surface area and low biological load.
[0013] In recent years, the polyurethane mesh carrier has been applied due to its large specific surface area, but its disadvantage is that it is easy to accumulate, agglomerate, and block, which affects the permeability of air and water, thus affecting its application effect
Although putting it into a plastic ball can solve the problem of clogging, the production cost is greatly increased and its application is also adversely affected

Method used

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  • Net cage type biological carrier, immobilized microbiological treatment sewage device and application of immobilized microbiological treatment sewage device
  • Net cage type biological carrier, immobilized microbiological treatment sewage device and application of immobilized microbiological treatment sewage device
  • Net cage type biological carrier, immobilized microbiological treatment sewage device and application of immobilized microbiological treatment sewage device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Adopt this embodiment to process printing and dyeing sewage, the treatment water volume is 420m 3 / d, the raw water quality is shown in Table 1 below.

[0093] Table 1: Raw water quality indicators Unit: mg / L (except PH)

[0094] project COD BOD 5 NH 4 + -N pH Index (average) ≤2200 ≤800 ≤100 6～9

[0095] Waste water enters the sewage treatment device of this embodiment after being pretreated in the regulating tank and the primary sedimentation tank. The water quality indicators entering the sewage treatment device of this embodiment are shown in Table 2 below.

[0096] Table 2: Influent Water Quality Index Unit: mg / L (except PH)

[0097] project COD BOD 5 NH 4 + -N pH Index (average) ≤2000 ≤770 ≤100 6～9

[0098] The sewage treatment device of this embodiment is composed of 20 immobilized microbial sewage treatment devices connected in series in three stages. The size of the sewage...

Embodiment 2

[0108] This embodiment is used to treat residential sewage, and the treated water volume is 1000m 3 / d, see Table 4 below for raw water quality.

[0109] Table 4: Raw water quality indicators Unit: mg / L (except PH)

[0110] project COD BOD 5 NH 4 + -N pH Index (average) ≤500 ≤400 ≤80 6～9

[0111] Waste water enters the sewage treatment device of this embodiment after being pretreated in the regulating tank and the primary sedimentation tank. The water quality indicators entering the sewage treatment device of the present invention are shown in Table 5 below.

[0112] Table 5: Influent Water Quality Index Unit: mg / L (except PH)

[0113] project COD BOD 5 NH 4 + -N pH Index (average) ≤450 ≤380 ≤80 6～9

[0114] The sewage treatment device of this embodiment is an immobilized microorganism treatment sewage device 20, the size of the sewage treatment pool 4 is 12.0m×6.0m×5.0 m, the effective ...

Embodiment 3

[0124] Using this embodiment to treat pharmaceutical intermediate sewage, the treated water volume is 600m3 / d, and the raw water quality is shown in Table 7 below.

[0125] Table 7: Raw water quality indicators Unit: mg / L (except PH)

[0126] project COD BOD 5 NH 4 + -N pH Index (average) ≤3500 ≤1000 ≤200 6～9

[0127] Waste water enters the sewage treatment device of this embodiment after being pretreated in the regulating tank and the primary sedimentation tank. The water quality indicators entering the sewage treatment device of the present invention are shown in Table 8 below.

[0128] Table 8: Influent Water Quality Index Unit: mg / L (except PH)

[0129] project COD BOD 5 NH 4 + -N pH Index (average) ≤3400 ≤960 ≤200 6～9

[0130] The sewage treatment device of the present invention is composed of two groups of immobilized microbial sewage treatment devices 20 connected in series. The si...

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Abstract

The invention discloses a net cage type biological carrier, an immobilized microbiological treatment sewage device and application of the immobilized microbiological treatment sewage device. The net cage type biological carrier comprises a net cage and biological stuffing filled in the net cage, wherein the net cage is in the shape of a rectangle without a top cover, and a hollow-out mesh holes are formed in the side surface and bottom surface of the net cage. The immobilized microbiological treatment sewage device comprises a sewage treatment tank, a perforated mud discharge tube, a perforated aeration tube, a plurality of lower supporting beams and a sealing net, wherein a plurality of the net cage type biological carriers are stacked in the sewage treatment tank and arranged above the lower supporting beams. The net cage type biological carrier disclosed by the invention is large in specific surface area, low in accumulation, caking and blockage possibility, good in gas-water permeability, and convenient to mount and maintain. The immobilized microbiological treatment sewage device is good in gas-water flow state, conductive to bringing mass transfer effect into play, large in biological load amount, good in treatment effect and suitable for high-concentration degradation-resistant sewage treatment and advanced sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment. More specifically, the invention relates to a cage-type biological carrier, an immobilized microorganism treatment sewage device and applications thereof. Background technique [0002] Sewage biological treatment is to use the metabolism of microorganisms to decompose and transform pollutants in sewage to achieve the purpose of purifying water quality. Biological treatment is currently one of the most effective and economical methods for sewage treatment. [0003] According to the state or form of existence of microorganisms in the sewage treatment process, sewage biological treatment can be divided into two categories: suspension growth method and attachment (or fixed) growth method. At present, the most widely used activated sludge method is a typical suspension growth process, and biofilm methods such as biofilter and contact oxidation are typical attachment growth processes. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/02C02F3/28
CPCY02W10/10
Inventor 李沧海漆剑荣杨洁刘雪素武少伟
Owner 北京三泰正方生物环境科技发展有限公司
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