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Sewage treatment system and method for treating wastewater with high DMF (Dimethyl Formamide) content by using biochemical method

A sewage treatment system and sewage treatment method technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high investment and operation costs, difficult biodegradation, biochemical oxygen demand In order to achieve the effect of basically the same film-hanging rate of fillers, reduce toxicity inhibition, and increase anaerobic load

Pending Publication Date: 2022-07-05
SHANDONG PACIFIC ENVIRONMENTAL PROTECTION
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Problems solved by technology

[0004] Since DMF is widely used as an organic solvent and does not directly participate in the reaction, almost all of the remaining DMF enters the wastewater. DMF is a low-toxicity compound and has been identified as a possible carcinogen for the human body. DMF in water will cause biochemical needs. Oxygen and nitrogen content are rising, and it is extremely difficult to be biodegraded (DMF's B / C is 0.065), which is a major problem in enterprise sewage treatment
[0005] At present, the main methods of domestic treatment of DMF wastewater are: adsorption, distillation, Fenton reagent method, ozone catalytic oxidation, photocatalytic oxidation and supercritical water oxidation and other physical and chemical treatment methods, the above several treatment methods, or treatment The effect is not good, the emission standard cannot be met, or the investment and operation cost is too high, which is difficult for enterprises to accept

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  • Sewage treatment system and method for treating wastewater with high DMF (Dimethyl Formamide) content by using biochemical method
  • Sewage treatment system and method for treating wastewater with high DMF (Dimethyl Formamide) content by using biochemical method

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Embodiment Construction

[0029] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0030] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the invention clearly dictates otherwise, the singular is intended to include the plural as well, and it is also to be understood that when the terms "comprising" and / or "including" are used in this specification, Indicate the presence of features, steps, operations, devices, components and / or combinations thereof;

[0031] For the convenience of description, if the words "up", "down", "left" and "right" appear in the prese...

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Abstract

The invention discloses a sewage treatment system and method for treating wastewater with high DMF content by a biochemical method, the sewage treatment system comprises an aeration tank for treating sewage, the front end of the aeration tank is provided with a fermentation device for cultivating bacteria, the fermentation device is internally provided with a filler for carrying the bacteria, and the filler is provided with a water inlet and a water outlet; a first pipeline is arranged between the fermentation device and the aeration tank, the first pipeline is used for circulating the filler between the fermentation device and the aeration tank, DMF (Dimethyl Formamide) in sewage is degraded by utilizing microbial metabolism, sewage purification is realized, and investment and operation costs are reduced.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system and method for treating wastewater with high DMF content by a biochemical method. Background technique [0002] The statements herein merely provide background related to the present invention and do not necessarily constitute prior art. [0003] DMF is N-dimethylformamide, which is a transparent and colorless liquid. It is called a universal solvent because it is easily miscible with solutes such as water, alcohol, ester, ketone, ether, unsaturated hydrocarbon and aromatic hydrocarbon. Widely used in medicine, pesticide, industry and other fields, especially in the pharmaceutical industry, DMF is an excellent reaction solvent, extractant and crystallization solvent, which can be used to synthesize raw materials for various drugs such as sulfadiazine, doxycycline, and cortisone. ; In addition, it is an excellent solvent for sulfamoyl, v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/34C02F101/38
CPCC02F3/30C02F3/34C02F2101/38
Inventor 张超群刘帅李功键安荣坤徐晨阳朱杰高
Owner SHANDONG PACIFIC ENVIRONMENTAL PROTECTION
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