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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, and poor biodegradability and other problems, to achieve the effect of obvious treatment effect, reasonable economy and low treatment cost

Active Publication Date: 2015-02-11
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 the normal drainage in the production of the sewage treatment plant in Weisheng Pharmaceutical Factory of CSPC, and 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°C, water temperature 20-25°C.

[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 assessment period of the test is as follows (unit: mg / L):

[0055]

example 2

[0056] Example 2: Test water source: The test water is the mother liquor of CSPC Group's Weisheng Pharmaceutical product workshop and the mixed water of normal drainage in the production of the sewage treatment plant in the 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°C, water temperature 13-15.5°C. The design parameters of each process unit are the same as in example 1 above.

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

[0058]

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

[0060]

example 3

[0061] Example 3: The incoming water for the test is the mixed preparation water of the mother liquor in the Weisheng pharmaceutical product workshop of CSPC and the normal drainage in the production of the sewage treatment plant in the factory. 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°C, water temperature 13-15.5°C; the design parameters of each process unit are the same as Example 1.

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

[0063]

[0064] The data during the impact resistance assessment period of the test is as follows (average water temperature: 14°C, 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 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). It's 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 comp...

Claims

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Application Information

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Patent Type & Authority Patents(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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