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Advanced treatment device for vitamin C production waste water and application method thereof

A production wastewater and advanced treatment technology, applied in water/sewage multi-stage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of high salt content in sewage, complex process flow, high operating costs, etc. problem, to achieve the effect of obvious treatment effect, reasonable economy and low treatment cost

Active Publication Date: 2012-10-03
PURUIQI ENVIRONMENTAL ENG BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The sewage discharged by vitamin C production enterprises has high salt content, complex components, poor biodegradability, and difficult treatment, especially to meet the first-level A standard in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB 18918-2002). its more difficult
At present, the treatment technology of vitamin C sewage varies from manufacturer to manufacturer. The process is basically based on physical and chemical pretreatment (such as coagulation, sedimentation, filtration, oxidation) + biochemical (such as anaerobic, A / O activated sludge, biofilm) + The combined mode of physical and chemical post-treatment (coagulation, sedimentation, filtration, BAF, oxidation) has a relatively complicated process flow and relatively high operating costs

Method used

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  • Advanced treatment device for vitamin C production waste water and application method thereof
  • Advanced treatment device for vitamin C production waste water and application method thereof
  • Advanced treatment device for vitamin C production waste water and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0049] Example 1: Test water source: The test water is normal drainage from the sewage treatment plant in the Sinopharm Group Weisheng Pharmaceutical Factory. The water quality indicators are as follows: COD: 200-500mg / L, NH 3 -N: 5-15mg / L, TN: 30-60mg / L; test water intake: 1.0m 3 / h; temperature: air temperature 20-25℃, water temperature 20-25℃.

[0050] The operating parameters of each process unit are as follows:

[0051]

[0052] The design parameters of each process unit are as follows:

[0053]

[0054] The data during the normal operation of the test is as follows (unit: mg / L):

[0055]

example 2

[0056] Example 2: Test water source: The test water is a mixture of mother liquor from the product workshop of Sinopharm Group Weisheng Pharmaceutical Co., Ltd. and normal drainage from the factory's sewage treatment plant. The water quality indicators are as follows: COD: 200-500mg / L, NH 3 -N: 5-15mg / L, TN: 30-60mg / L; test water intake: 1.0m 3 / h; temperature: air temperature -10-5℃, water temperature 13-15.5℃. The design parameters of each process unit are the same as in Example 1.

[0057] The operating parameters of each process unit are as follows:

[0058]

[0059] The data during the full-load test period of the test is as follows (average water temperature: 14℃, unit mg / L):

[0060]

example 3

[0061] Example 3: Test incoming water is a mixture of mother liquor from CSPC Weisheng Pharmaceutical's product workshop and normal drainage from the factory's sewage treatment plant. The water quality indicators are as follows: COD: 372-2150mg / L, NH 3 -N: 54.4-323mg / L, TN: 77-349mg / L; test water intake: 1.0m 3 / h; temperature: air temperature -10-5℃, water temperature 13-15.5℃; the design parameters of each process unit are the same as in Example 1.

[0062] The operating parameters of each process unit are as follows:

[0063]

[0064] The data during the test impact assessment period is as follows (average water temperature: 14℃, unit mg / L):

[0065]

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Abstract

The invention discloses an advanced treatment device for vitamin C production waste water and an application method thereof. The advanced treatment device for the vitamin C production waste comprises an anaerobic biofilter and is characterized by also comprising a coagulation and sedimentation system, a preoxidation system, an A / O biochemical system, a secondary sedimentation system and a disinfection system, wherein the outlet of the vitamin C production waste water is connected with the coagulation and sedimentation system; a water outlet of the coagulation and sedimentation system is connected with the preoxidation system through a pump; a water outlet of the preoxidation system is connected with the A / O biochemical system; a water outlet of the A / O biochemical system is connected with the secondary sedimentation system; a water outlet of the secondary sedimentation system is connected with the disinfection system; and a water outlet of the disinfection system is connected with the anaerobic biofilter. The combined process is effective and reasonable in treatment on vitamin pharmacy waste water; under the conditions of normal water quality and full-load water quality, the process has the obvious effect of removing the pollution items, such as chemical oxygen demand (COD), biochemical oxygen demand 5 (BOD5), NH3-N, TN, TP, chromaticity and the like, in the vitamin pharmacy waste water and the items can reach the standard stably; and under the condition of low temperature, the process has high impact resistance.

Description

Technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to an advanced treatment device for vitamin C production wastewater and an application method thereof. Background technique [0002] The wastewater discharged by vitamin C production enterprises has high salt content, complex composition, poor biodegradability, and difficult treatment, especially if it must be treated to the first level A standard in the "Urban Wastewater Treatment Plant Pollutant Discharge Standard" (GB 18918-2002), It is more difficult. At present, the treatment technology of vitamin C wastewater is different from each manufacturer. The process is basically based on physical and chemical pretreatment (such as coagulation, precipitation, filtration, oxidation) + biochemical (such as anaerobic, A / O activated sludge, biofilm) + The combined mode of physical and chemical post-treatment (coagulation, precipitation, filtration, BAF, oxidation), the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/72C02F1/52C02F1/50
Inventor 李桂平丁士兵张小亮王义尚蔚荣华
Owner PURUIQI ENVIRONMENTAL ENG BEIJING
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