Method for treating fermentative pharmaceutical wastewater

A technology for pharmaceutical wastewater and wastewater, which is applied in natural water treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc. It can solve the problems of high operating cost, low treatment process efficiency, complicated operation, etc., and improve the treatment effect , reduce the cost of sludge disposal, and increase the effect of microbial biomass

Active Publication Date: 2010-11-17
JIANGXI JDL ENVIRONMENTAL PROTECTION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a new and efficient treatment method for fermented pharmaceutical wastewater, which overcomes the defects of low treatment efficiency, high operating cost and complicated operation of the existing treatment process.

Method used

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  • Method for treating fermentative pharmaceutical wastewater

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Embodiment 1

[0014] The wastewater to be treated is lincomycin wastewater, the hydraulic retention time of the facultative pool is 20 hours, the hydraulic retention time of the membrane bioreactor is 8 hours, the sludge concentration of the biochemical system is controlled at 15000-20000mg / L, and the sludge reflux is set in the reactor pump to return the mud-water mixture in the reactor to the facultative tank, and the return ratio is 100%. And use hollow fiber membrane modules for mud-water separation.

Embodiment 2

[0016] The wastewater to be treated is penicillin wastewater, the hydraulic retention time of the facultative pool is 20 hours, the hydraulic retention time of the membrane bioreactor is 12 hours, the sludge concentration of the biochemical system is controlled at 15000mg / L-20000mg / L, and the sludge reflux is set in the reactor pump to return the mud-water mixture in the reactor to the facultative tank, and the return ratio is 200%. And use hollow fiber membrane modules for mud-water separation.

Embodiment 3

[0018] The wastewater to be treated is vitamin wastewater, the hydraulic retention time of the facultative pool is 16 hours, the hydraulic retention time of the membrane bioreactor is 10 hours, the sludge concentration of the biochemical system is controlled at 15000-20000mg / L, and the sludge return pump is installed in the reactor. The mud-water mixture in the reactor is returned to the facultative tank, and the return ratio is 200%. And use hollow fiber membrane modules for mud-water separation.

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Abstract

The invention relates to a method for treating industrial wastewater, in particular to a method for treating fermentative pharmaceutical wastewater. The method comprises the following steps of: inletting the pharmaceutical wastewater into a facultative pond; performing biochemical treatment on the pharmaceutical wastewater; and performing aerobic biological treatment on outlet water of the facultative pond by using a membrane bioreactor. The method is characterized in that: the concentration of activated sludge in the membrane bioreactor is 15,000 to 20,000 mg / L; the hydraulic retention time of the membrane bioreactor is 8 to 15 hours which is 1 / 2-1 / 4 of that of a conventional aerobic treatment process; a sludge return pump is arranged in the reactor; a sludge-water mixture in the reactor is returned to the facultative pond in a return ratio of 100 to 300 percent, so that the effect of treating persistent organic pollutant components in the fermentative pharmaceutical wastewater is improved; and a hollow fiber membrane module is used for replacing a secondary sedimentation tank to separate sludge and water. The method for treating the fermentative pharmaceutical wastewater has the advantages of less residual sludge, long sludge removing period, reduction of sludge treatment cost, simple operation, high automation degree and high capacity of resisting impact load.

Description

technical field [0001] The invention relates to a treatment method for industrial wastewater, in particular to a treatment method for fermented pharmaceutical wastewater. Background technique [0002] Fermentation pharmaceutical wastewater is a kind of highly toxic and difficult to treat high-concentration organic wastewater. The wastewater has a high concentration of organic matter, and its chemical oxygen demand (COD) can reach 10,000-30,000 mg / L, and contains a large amount of refractory organic matter and toxic compounds. If it is directly discharged into the river without treatment, it will seriously damage the ecological environment of the water body. [0003] The existing fermented pharmaceutical wastewater mainly adopts a treatment process combining physicochemical pretreatment and biochemical treatment. Due to the implementation of the "Water Pollutant Discharge Standard for Fermentation Pharmaceutical Industry" (GB21903-2008), the effluent after biochemical treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/36
Inventor 廖志民邹莲花龙斌杨欣杨圣云何凌云郭景奎沈平锐王鹏周佳琳
Owner JIANGXI JDL ENVIRONMENTAL PROTECTION CO LTD
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