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Antibiotic sewage treatment method

A treatment method, antibiotic technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of ineffective removal of antibiotics, high treatment cost, reduction of total antibiotics, etc. To achieve the effect of avoiding excessive antibiotic content, simple operation process and strong metabolic capacity

Active Publication Date: 2022-04-05
上海市建工设计研究总院有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are the following disadvantages: In membrane filtration, the combination of microfiltration and reverse osmosis is an effective way to remove antibiotics in advanced sewage treatment. The removal rate of antibiotics is only about 50%. On the other hand, due to the fine pore size of the membrane, the membrane is easily polluted. In order to prevent the membrane from being polluted, the sewage will be treated before the membrane is filtered, and the treatment cost is high.
Sludge adsorption and activated carbon adsorption did not degrade antibiotics and reduce the total amount of antibiotics, but only transferred antibiotics from the water phase to sludge or activated carbon, and there was a possibility of antibiotic recontamination

Method used

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  • Antibiotic sewage treatment method

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Embodiment 1

[0041] The sewage comes from the Haikou International Center of Traditional Chinese Medicine. After testing, the indicators of the sewage are CODcr=282(mg / L), BOD 5 =196(mg / L), SS=144(mg / L), NH 3 -N=48 (mg / L), the content of antibiotics (tetracyclines and sulfonamides) is 33 μg / L.

[0042] Set up the above-mentioned antibiotic sewage treatment device, add a septic well next to the septic tank, the plane size is 1.5m×1m, the depth is 3.5m, and there are two built-in submersible sewage pumps, one for use and one for standby, and the flow rate Q=10m 3 / h, H=10m, N=0.75kw. The small submersible sewage pump installed in the manure well provides manure for the anoxic tank of the sewage treatment station. The septic tank is equipped with feces, and the type of feces is pure feces (sewage and waste water diversion before the septic tank). The residence time of the feces in the septic tank is 4 hours, and the content of Enterococcus faecalis in it is 8.5× 10 7 A / L. Before the manu...

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Abstract

The invention provides an antibiotic sewage treatment method, which comprises: S1, introducing sewage into a regulating tank, and carrying out primary regulation on the sewage; s2, introducing the sewage treated in the step S1 into an anoxic tank, adding liquid dung into the anoxic tank, carrying out small-amount aeration on the anoxic tank to enable the anoxic tank to be in an anoxic state, carrying out anoxic treatment on the sewage, and carrying out anoxic domestication on enterococcus in the liquid dung; s3, introducing the sewage treated in the step S2 into an aerobic tank, fully aerating the aerobic tank, performing aerobic treatment on the sewage, and performing enhanced aerobic domestication on enterococcus in fecal water; s4, the sewage treated in the step S3 flows back to the anoxic tank, the enterococcus subjected to complete enhanced aerobic domestication flows back to the anoxic tank along with the sewage, aerobic domestication is performed again, and then the enterococcus is introduced into the aerobic tank for enhanced aerobic domestication; and S5, introducing the sewage treated in the step S4 into a microfiltration component membrane tank, and introducing the microfiltered effluent into a subsequent disinfection contact tank for disinfection. The content of antibiotics in the sewage treated by the method is low.

Description

technical field [0001] The invention relates to a method for treating antibiotic sewage, belonging to the technical field of sewage treatment. Background technique [0002] Antibiotics are widely used in the treatment of human diseases, but most antibiotics are only absorbed by the body after ingestion, and more than 85% are excreted in the form of original drugs or metabolites, and finally enter the ecological environment, causing serious pollution to the ecological environment . [0003] Municipal sewage treatment plants are generally considered to be a line of defense for pollutants to enter the ecological environment. At present, the treatment process of most urban sewage treatment plants is designed for conventional organic pollutants and nutrient salts. This traditional sewage treatment process has a very low removal rate of antibiotics, and even the residues of antibiotics will affect the biological treatment in the sewage treatment system. The microorganisms in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCY02W10/10
Inventor 顾正友杨柳
Owner 上海市建工设计研究总院有限公司
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