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Treatment method of antibiotic production wastewater

A technology for producing wastewater and a treatment method, which is applied in the field of water treatment, can solve problems such as iron-containing precipitated sludge, achieve the effect of reducing treatment costs and eliminating the generation of iron-containing precipitated sludge

Active Publication Date: 2016-06-08
POTEN ENVIRONMENT GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention discloses a treatment method for antibiotic production wastewater, which is used to solve the problem in the prior art that iron-containing precipitated sludge is produced when Fenton oxidation is used to treat antibiotic production wastewater

Method used

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Embodiment 1

[0035] Get 1000ml rifampicin production wastewater, COD Cr to 278mg / L, adjust the pH value of the wastewater to 4.0, add 3.24ml of 30% hydrogen peroxide, 1.32g of ferrous sulfate heptahydrate, enter the Fenton fluidized bed, the aeration flow rate is 2.5L / h, and the Fenton oxidation reaction time is 100 Minutes, the wastewater after Fenton oxidation treatment enters the membrane separation reactor after passing through the security filter, the effluent can reach the standard for discharge or reuse, and the concentrated water passes through the catalyst to become 3 The photocatalytic reactor returned to the Fenton fluidized bed, mixed with the new rifampicin production wastewater, adjusted the pH value and added hydrogen peroxide, and the effluent COD Cr It is 45mg / L, which meets the discharge requirements of "Integrated Wastewater Discharge Standard" (GB8978-1996), and no iron-containing precipitated sludge is produced.

Embodiment 2

[0037] Take 1000ml rifampicin wastewater, COD Cr 453mg / L, adjust the pH value of the wastewater to 3.5, add 4.53ml of 30% hydrogen peroxide, 2.78g of ferrous sulfate heptahydrate, enter the Fenton fluidized bed, the aeration flow rate is 3L / h, and the Fenton oxidation reaction time is 90 minutes , the waste water after Fenton oxidation treatment enters the nanofiltration membrane separation reactor through the security filter, and the effluent can reach the standard for discharge or reuse. After Fuping production wastewater is mixed, adjust the pH value and add hydrogen peroxide, the effluent COD Cr It is 48mg / L, which meets the discharge requirements of the "Integrated Wastewater Discharge Standard" (GB8978-1996), and no iron-containing precipitated sludge is produced.

Embodiment 3

[0039] Take 1000ml rifampicin wastewater, COD Cr to 871mg / L, adjust the pH value of the wastewater to 3.0, add 5.81ml of 30% hydrogen peroxide, 1.78g of ferrous sulfate heptahydrate, enter the Fenton fluidized bed, the aeration flow rate is 3.6L / h, and the Fenton oxidation reaction time is 80 Minutes, the wastewater after Fenton oxidation treatment passes through the security filter and then enters the nanofiltration membrane separation reactor, the effluent can reach the standard for discharge or reuse, and the concentrated water passes through the catalyst to become SnO 2 The photocatalytic reactor returns to the Fenton fluidized bed, mixes with the new rifampicin wastewater, adjusts the pH value and adds hydrogen peroxide, and the effluent COD Cr It is 49mg / L, which meets the discharge requirements of "Integrated Wastewater Discharge Standard" (GB8978-1996), and no iron-containing precipitated sludge is produced.

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Abstract

The embodiment of the invention discloses a treatment method of antibiotic production wastewater. The method includes the steps of conveying antibiotic production wastewater to a Fenton oxidation device to be subjected to Fenton oxidation after the pH of antibiotic production wastewater is regulated to be acidic, conveying wastewater subjected to Fenton oxidation to a membrane separation reactor to be subjected to membrane separation, conveying concentrated water obtained through membrane separation to a photocatalysis reactor, conducting photocatalysis reduction reaction so that Fe3+ in concentrate water can be reduced into Fe2+, discharging or recycling fresh water obtained through membrane separation, conveying concentrated water obtained after the photocatalysis reduction reaction to the Fenton oxidation device, and continuing to process antibiotic production wastewater. Ferrite is added only at the start stage, only pH value regulation and hydrogen peroxide addition are conducted in the later period, and therefore generation of sludge containing iron precipitate is eradicated. Sludge containing iron precipitate does not need to be additionally processed, the processing cost can be reduced, ferrite needs to be added only at the start stage, the use amount of ferrite can be quite small, and the processing cost is further reduced.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a treatment method for antibiotic production wastewater. Background technique [0002] Antibiotic production wastewater is wastewater generated during the production of antibiotic drugs. This wastewater is characterized by complex components, high chroma, high biological toxicity, and is difficult to biochemically treat. Traditional antibiotic production wastewater generally adopts a treatment process of physical and chemical pretreatment → anaerobic and aerobic treatment → post-treatment → effluent. However, there are many unit operations for anaerobic and aerobic treatment, which makes the project occupy a large area; there are many types and large quantities of chemicals added, which greatly increases the conductivity of the water body and increases the operating cost; the treatment cycle is long and the continuity of the treatment process is not strong. Such defects limit its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F1/442C02F1/70C02F1/722C02F9/00C02F2301/08C02F2305/026C02F2305/10
Inventor 乔瑞平刘峰蒋玮陈广升俞彬李璐
Owner POTEN ENVIRONMENT GRP
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