Method for treating pharmaceutical wastewater

A pharmaceutical wastewater and treatment method technology, applied in natural water treatment, biological water/sewage treatment, heating water/sewage treatment, etc., can solve difficult problems such as treatment, achieve stable operation, good effluent quality, and simple operation

Inactive Publication Date: 2018-05-15
湖南千幻科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a pharmaceutical wastewater treatment method aimed at the problem that high-salinity pharmaceutical wastewater is difficult to treat. The method can effectively remove

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] The pharmaceutical wastewater to be treated is divided into two parts, one is high-salinity wastewater, the treatment capacity is 25t / d, the salinity is 6500mg / L, the COD is 4302 mg / L, and the ammonia nitrogen is 204mg / L; the other is the low-salinity wastewater, which is treated The amount is 60t / d, the salinity is 2530mg / L, the COD is 3702 mg / L, and the ammonia nitrogen is 156mg / L.

[0021] The processing steps and effects are as follows:

[0022] (1) The high-salinity pharmaceutical wastewater is evaporated and desalinated through the evaporation process;

[0023] (2) Pass the low-salinity pharmaceutical wastewater through a sedimentation tank for coagulation and precipitation; add PAC as a flocculant, the flocculation time is 30 minutes, and the precipitation time is 2 hours; (3) Coagulate and precipitate the distilled water after evaporation and desalination and the low-salinity pharmaceutical wastewater The latter supernatant is mixed and connected to ...

Example Embodiment

[0029] Example 2

[0030] The pharmaceutical wastewater to be treated is divided into two parts, one is high-salinity wastewater, the treatment capacity is 25t / d, the salinity is 7500mg / L, the COD is 4484 mg / L, the ammonia nitrogen is 254mg / L; the other is the low-salinity wastewater, which is treated The amount is 60t / d, the salinity is 3562mg / L, the COD is 4212 mg / L, and the ammonia nitrogen is 256mg / L.

[0031] The processing steps and effects are as follows:

[0032] (1) The high-salinity pharmaceutical wastewater is evaporated and desalinated through the evaporation process;

[0033] (2) Pass the low-salinity pharmaceutical wastewater through a sedimentation tank for coagulation and precipitation; add PAC as a flocculant, with a flocculation time of 35 minutes and a precipitation time of 2 hours; (3) Coagulate and precipitate the distilled water after evaporation and desalination and the low-salinity pharmaceutical wastewater The latter supernatant is mixed and connected to the ...

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PUM

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Abstract

The invention provides a method for treating pharmaceutical wastewater. After pharmaceutical wastewater of high salinity is evaporated and desalinated, coagulation and deposition of distilled water and pharmaceutical wastewater of low salinity are carried out, a supernatant is mixed and accessed to a neutralization pond; the materials pass an anoxic tank and an aerobic tank in order to carrying out a nitration reaction and a denitrification reaction, and finally the materials are filtered by a MBR membrane, in order to effectively degrade COD and ammonia nitrogen in the pharmaceutical wastewater. The removal rate of COD reaches 90% or above, and the removal rate of ammonia nitrogen reaches 87% or above. The method for treating pharmaceutical wastewater has the advantages of simple operation, good effluent quality, and stable operation.

Description

technical field [0001] The invention relates to the field of wastewater treatment equipment, and more specifically relates to a pharmaceutical wastewater treatment method. Background technique [0002] The pharmaceutical industry has a wide variety of products and complex processes, and the production processes of different products are different. Therefore, the composition of pharmaceutical wastewater is usually complex, and the concentration of pollutants is high, and a large number of toxic and harmful substances and refractory substances exist in it. Pharmaceutical wastewater is characterized by complex components, high organic content, high toxicity, deep color and high salt content, especially poor biochemical properties, and intermittent discharge, which is difficult to treat. [0003] At present, the development of my country's pharmaceutical industry is unbalanced. Although there are many enterprises, their scale is small. A considerable part of the production proc...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/34
CPCC02F1/04C02F1/52C02F1/66C02F3/1268C02F3/28C02F3/286C02F9/00C02F2103/343
Inventor 不公告发明人
Owner 湖南千幻科技有限公司
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