Pharmaceutical wastewater treatment process

Abstract

The invention discloses a pharmaceutical wastewater treatment process, particularly relates to the technical field of pharmaceutical wastewater treatment, and adopts the technical scheme that the pharmaceutical wastewater treatment process comprises the following specific steps: S1, firstly, performing quality-divided collection on each stream of wastewater, wherein the salicylic acid wastewater is pretreated by Fenton oxidation and coagulation precipitation. The concentration of organic pollutants, especially the concentration of refractory pollutants, is greatly reduced by utilizing non-selectivity and strong oxidizing property of Fenton oxidation, and meanwhile, the biodegradability of wastewater can be improved; and the salicylic acid wastewater treated by the means can selectively enter a pre-hydrolysis acidification tank and a nitrification and denitrification tank or is discharged into a discharge water tank after reaching the standard according to the water quality condition. The process has the beneficial effects that an air floatation device is adopted, and the air floatation device is integrated, compact in structure, small in occupied area, convenient to install and good in treatment effect; and a TJ type releaser designed by the Tongji University is adopted, so that the air release is complete, and the blockage is not easy to occur.

Description

technical field [0001] The invention relates to the field of pharmaceutical wastewater treatment, in particular to a pharmaceutical wastewater treatment process. Background technique [0002] Wastewater refers to the general term for the water discharged during residents' activities and runoff rainwater. It includes domestic sewage, industrial wastewater, and other useless water such as primary rainwater that flows into drainage pipes and channels. After pollution, it is difficult to purify and treat water that does not meet a certain standard, and pharmaceutical wastewater is a type of industrial wastewater. [0003] The existing technology has the following disadvantages: the existing pharmaceutical wastewater treatment process not only has poor treatment effect, but also occupies a large area of ​​equipment and high cost input. [0004] Therefore, it is necessary to invent a kind of pharmaceutical wastewater treatment process. Contents of the invention [0005] For th...

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Problems solved by technology

[0005] For this reason, the present invention provides a kind of pharmaceutical wastewater treatment process, by adopting the pretreatment process of Fenton oxidation and coagulation precipitation to salicylic acid wastewater, and then by adopting micro-electrolysis, Fenton oxidation, coagulation precipitation to process wastewater Pretreatment process, and then firstly adopt the mature, stable and reliable pre-hydrolysis acidification and deep hydrolysis acidification process to treat the high-concentration biochemical organic pollutants in the pre-treatment effluent, and then through the A / O process and 23 pairs of air flotation devices The pretreated wastewater is treated to solve the problems that the existing pharmaceutical wastewater treatment process not only has poor treatment effect, but also occupies a large area of ​​equipment and high cost.

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