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Caffeine production wastewater treatment method

A treatment method and technology for producing wastewater, which are applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The effect of reducing operation and management cost, improving processing effect and reducing operation cost

Inactive Publication Date: 2014-06-18
NINGBO HENGJIE WATER DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the defects of poor treatment effect, cumbersome operation and management, and high treatment cost in the treatment of caffeine production wastewater in the prior art, and provide a method for classifying sewage to solve the above problems

Method used

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  • Caffeine production wastewater treatment method
  • Caffeine production wastewater treatment method
  • Caffeine production wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1, see figure 1 , respectively collect the methylated raffinate wastewater, primary chlorination wastewater and water washing wastewater into the 1# sump, 2# sump and 3# sump, and raise the formazan raffinate wastewater in the 1# sump to In the 1#Fenton oxidation tank, adjust the pH to 2, add 5~20kg of ferrous sulfate aqueous solution with a mass fraction of 5~50% and 2~20L of hydrogen peroxide with a mass fraction of 30% in each cubic meter of methylated raffinate wastewater, Carry out the Fenton oxidation reaction; at the same time, discharge the primary chlorination wastewater in the 2# sump into the aeration stripping tank, control the temperature of the wastewater in the reaction tank to 30 ° C, adjust the pH to 6, and drain the 1# oxidation tank through The oxidized methylated raffinate waste water is brought into the aeration and stripping tank, mixed with the primary chlorination waste water and aerated and stripped for 0.5h, and then discharged into the...

Embodiment 2

[0033] Embodiment 2, respectively collect the methylated raffinate wastewater, primary chlorination wastewater and water washing former mother wastewater into 1# sump, 2# sump and 3# sump, and the methylated raffinate in the 1# sump Lift the wastewater into the 1#Fenton oxidation pond, adjust the pH to 6, and add 5~20kg of ferrous sulfate aqueous solution with a mass fraction of 5~50% and 2~20L with a mass fraction of 30% for each cubic meter of methylated raffinate wastewater Hydrogen peroxide, carry out the Fenton oxidation reaction; at the same time, discharge the primary chlorination wastewater in the 2# sump into the aeration stripping tank, control the temperature of the wastewater in the reaction tank to 80°C, adjust the pH to 14, and oxidize the 1# The oxidized first formaldehyde waste water in the pool is poured into the aeration and stripping tank, mixed with the primary chlorination wastewater and aerated and stripped for 5 hours, and then discharged into the free se...

Embodiment 3

[0035] Embodiment 3, respectively collect first formazan raffinate waste water, primary chlorination waste water and water washing former mother waste water in 1# sump, 2# sump and 3# sump, and the formazan raffinate in 1# sump Lift the wastewater into the 1#Fenton oxidation pond, adjust the pH to 3, and add 5~20kg of ferrous sulfate aqueous solution with a mass fraction of 5~50% and 2~20L with a mass fraction of 30% for each cubic meter of methylated raffinate wastewater Hydrogen peroxide, carry out the Fenton oxidation reaction; at the same time, discharge the primary chlorination wastewater in the 2# sump into the aeration stripping tank, control the temperature of the wastewater in the reaction tank to 40°C, adjust the pH to 7, and oxidize the 1# The oxidized first-formation raffinate wastewater in the pool is poured into the aeration blow-off tank, mixed with the primary chlorination wastewater for aeration and blow-off for 1 hour, and then discharged into the free sedimen...

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Abstract

The present invention discloses a caffeine production wastewater treatment method, which comprises: respectively carrying out pre-treatment on water washing raw mother wastewater, primary chlorine extraction wastewater and methylating residue liquid wastewater, mixing untreated tea sodium wastewater, the pre-treated water washing raw mother wastewater, the pre-treated primary chlorine extraction wastewater and the pre-treated methylating residue liquid wastewater, adding the obtained mixture to an adjustment tank, adopting clear water to dilute, adding nutrients required by microorganism growth, sequentially carrying out hydrolysis acidification and aerobic biochemical reaction, and discharging the wastewater meeting the standard. The caffeine production wastewater treatment method has the following beneficial effects that: the wastewater treatment effect is substantially improved, the treatment process is simple, the management operation is convenient, and the operation management cost is low.

Description

technical field [0001] The invention relates to a method for treating caffeine production wastewater, which belongs to the technical field of environmental protection. Background technique [0002] Caffeine (1,3,7-trimethylxanthine) is a xanthine alkaloid, a central nervous system stimulant drug, has antipyretic and analgesic effects, and is also a beverage additive. Due to the low yield of natural caffeine, caffeine widely used in society is mainly produced through chemical synthesis. [0003] Most pharmaceutical factories use chemical synthesis to produce caffeine series products. The production process is complex, and the raw materials used in the production process are mostly strong acids, strong alkalis, and toxic and harmful substances. Therefore, the amount of wastewater generated in the production process is relatively large, and the water quality components are complex and changeable. There are four main categories: washing raw mother wastewater, methanol raffinat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 赵志龙米久春陈其经黄慧君
Owner NINGBO HENGJIE WATER DEV
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