Method for removing total nitrogen through self-enrichment of drug-resistant aerobic denitrifying flora
An aerobic denitrifying bacteria, drug resistance technology, applied in chemical instruments and methods, special compound water treatment, water treatment parameter control, etc., can solve difficult to form dominant bacteria, low total nitrogen removal rate, antibiotic sensitivity, etc problems, to achieve the effect of enhancing the feasibility of the project, increasing the number of populations, and strengthening the competitiveness
Active Publication Date: 2021-09-21
BEIJING UNIV OF TECH
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Embodiment 1
[0019] Embodiment 1: The method for realizing the self-enrichment of drug-resistant aerobic denitrifying bacteria in this embodiment to realize the removal of total nitrogen includes the following steps:
[0020] The artificial water concentration and composition: glucose 0.56g / L, ammonium chloride 0.268g / L, sodium bicarbonate 1.68g / L, potassium dihydrogen phosphate 0.1g / L, sodium chloride 1.18g / L, chloride Potassium 0.16g / L; The composition and concentration of trace element solution are as follows: Na 2 EDTA is 4.29g / L, FeCl 2 4H 2 O is 1.99g / L, MnCl 2 2H 2 O is 0.08g / L, NiCl 2 ·6H 2 O is 0.02g / L, CoCl·6H 2 0 is 0.02g / L, CuCl 2 ·H2O is 0.02g / L, ZnCl 2 0.02g / L, NaMoO 4 2H 2 O is 0.02g / L, Na 2 WoO 4 2H 2 O is 0.03g / L, H 3 BO 3 It is 0.06g / L; the pure substance of trace elements is weighed and dissolved in 1L Milli-Q water, and ultrasonically dispersed for 0.5h; the solution is added to each reactor at the time of application, with a concentration of 1mL / L.
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The invention relates to a method for removing total nitrogen through self-enrichment of drug-resistant aerobic denitrifying flora, and belongs to the field of biological sewage treatment. The method comprises the following three stages: 1, culturing is conducted on inoculated sludge; 2, sulfamethoxazole with the concentration of 30 mg / L is used for basic domestication on drug-resistant aerobic denitrifying bacteria; and 3, the 30mg / L sulfamethoxazole and the trimethoprim cooperate to intensify and domesticate the drug-resistant aerobic denitrifying bacteria. Compared with a conventional pure bacteria culture and enrichment method, the in-situ activated sludge system balance is effectively maintained, and separation, purification and enrichment are not needed; and finally, the total nitrogen removal rate reaches 71.12%. The invention aims to solve the technical problems of difficulty in enrichment of aerobic denitrifying bacteria, sensitivity to antibiotics, difficulty in formation of dominant bacteria and low total nitrogen removal rate in the existing aerobic denitrifying bacteria enhanced nitrogen removal in an activated sludge system with relatively high antibiotic content.
Description
technical field [0001] The invention belongs to the field of biological denitrification of sewage, and specifically relates to a method for self-enrichment of drug-resistant aerobic denitrifying bacteria to realize removal of total nitrogen. It is suitable for sewage treatment fields such as the treatment of municipal domestic sewage and industrial wastewater containing pharmaceutical wastewater or hospital wastewater. Background technique [0002] Antibiotics are extremely important drugs that are widely used to treat human diseases or promote the growth of livestock. Especially during the outbreak of the new coronavirus, the demand and use of antibiotics have greatly increased, and antibiotics are poorly absorbed in the human body and Being persistent, approximately 30-90% of these compounds are excreted in urine or feces, and then flow into the domestic sewage system and eventually into the sewage treatment plant. However, currently no wastewater treatment plant has a sp...
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IPC IPC(8): C02F3/34C02F3/12C02F101/34C02F101/38
CPCC02F3/34C02F3/348C02F3/1278C02F2209/16C02F2101/38C02F2101/40C02F2101/34C02F2209/08C02F2305/06C02F2209/10C02F2209/06Y02W10/10
Inventor 樊晓燕张忠兴高玉玺赵君如徐是龙
Owner BEIJING UNIV OF TECH