Method for treating cephalosporin wastewater by catalytic wet oxidation
A technology for catalytic wet oxidation and treatment head, which is applied in oxidation water/sewage treatment, chemical instruments and methods, chemical/physical processes, etc. The effect of safe running costs, improved biodegradability, and moderate running costs
Inactive Publication Date: 2019-05-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
Aitek Holdings Group Co., Ltd. disclosed in CN201210349360.3 a method of anoxic hydrolysis acidification-iron-carbon micro-electrolysis-membrane bioreactor for treating wastewater from cephalosporin production. The impact of fluctuations and environmental changes is large, and the final effluent ammonia nitrogen and total phosphorus cannot meet the discharge standards
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Embodiment 1
[0023] Take 200mL of cephalosporin wastewater and put it into the reactor, and add 2g of catalyst powder into the reactor, pour pure oxygen 2MPa into the reactor, react at a constant temperature of 210°C for 2 hours, the stirring speed is 600r / min, and measure The TOC removal rate was 80.3%, and the TN removal rate was 92.6%.
Embodiment 2
[0025] Take 200mL of cephalosporin wastewater and add it to the reactor, pour pure oxygen 2MPa into the reactor, react at a constant temperature of 260°C for 3 hours, and the stirring speed is 600r / min. The rate is 47.2%.
Embodiment 3
[0027] Take 200mL of cephalosporin wastewater and add it to the reaction kettle, and add 2g of catalyst powder into the reaction kettle, pour pure oxygen 2MPa into the reaction kettle, react at a constant temperature of 260°C for 3 hours, and the stirring speed is 600r / min. The TOC removal rate was 91.8%, and the TN removal rate was 96.5%.
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Abstract
The invention relates to a method for treating cephalosporin wastewater by catalytic wet oxidation. Cephalosporins are the most widely used antibiotics, and abuse, residual contamination and the likeof the antibiotics make bacteria resistant drugs and threaten human health. The cephalosporin wastewater is oxidized by air in a reactor filled with a catalyst under the conditions that the reaction pressure is 3.5-8.0 Mpa and the reaction temperature is 200-300 DEG C. After catalytic wet oxidation treatment is carried out, the TOC removal rate of the cephalosporin wastewater is about 80%-98% andthe TN removal rate is about 90%-99%, so that the biodegradability of the wastewater is obviously improved, and the difficulty of reaching the standard in subsequent treatment is greatly reduced. Themethod is efficient and free of secondary pollution, and is an ideal choice for solving antibiotic pollution of water bodies.
Description
technical field [0001] The invention relates to the field of pharmaceutical wastewater treatment, in particular to a method for catalytic wet oxidation treatment of cephalosporin wastewater. Background technique [0002] my country is a big country in the production of antibiotics, but also a big country in the use of antibiotics. Cephalosporin antibiotics are the most representative and widely used antibiotics. Cephalosporin wastewater has complex components, high biological inhibition, high COD, high ammonia nitrogen, high salt content, high solid concentration, and is difficult to treat by biological methods. [0003] In CN201510031012.5, Zhuhai Livzon Synthetic Pharmaceutical Co., Ltd. used multiple extractions to separate the organic phase under different conditions, and then oxidized the water phase for 60-90 minutes under activated carbon-ultraviolet ozone conditions to treat ceftriaxone wastewater. This method only It is suitable for treating ultra-high concentrati...
Claims
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IPC IPC(8): C02F1/72B01J23/46B01J23/10B01J23/42B01J23/50
Inventor 孙承林王维李先如卫皇曌孙文静
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI