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Sulfonamide high-salinity wastewater bioengineering bacterium treatment method

A high-salt wastewater and bioengineering technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of high cost, low treatment efficiency, and heavy treatment burden. Achieve the effects of optimizing stability and impact resistance, reducing effluent COD value and ammonia nitrogen content, and reducing treatment costs

Active Publication Date: 2022-05-10
江苏合普环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are that when using conventional biochemical systems to treat high-concentration and high-salt wastewater, the treatment efficiency is low, the treatment burden is large, and the required cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The sulfonamide high-salt wastewater contains sulfonamide, sulfachloropyridazine, sulfachlorperidazine sodium, sulfachlorpyrazine and sulfachlordapyr sodium, and its bioengineering bacteria treatment method includes the following steps:

[0046] S1: According to the target degradation substances in the water quality of sulfonamide high-salt wastewater as the main carbon source and energy source, MEFS engineering bacteria were obtained, including 40% Pseudomonas alcaliphila Pseudomonas alcaligenes, 30% of Microbacterium lacticum Lactobacillus, 30% Halomonas hamiltonii Halomonas hanzii;

[0047] S2: put MEFS engineering bacteria into the first wastewater with a salinity of 1.5% for fermentation pretreatment, the influent COD concentration is 5300 mg / L, and the fermentation pretreatment section is treated to 1000 mg / L, and the residence time is 6 days. COD removal rate is 81%;

[0048] After the pretreatment effluent is hydrolyzed and acidified, it enters the conti...

Embodiment 2

[0054] The sulfonamide high-salt wastewater contains sulfonamide, sulfachloropyridazine and sulfachloropyridazine sodium, and its bioengineering bacteria treatment method includes the following steps:

[0055] S1: According to the target degradation substances in the water quality of sulfonamide high-salt wastewater as the main carbon source and energy source, MEFS engineering bacteria were obtained, including 50% Pseudomonas alcaliphila Pseudomonas alcaligenes, 20% of Microbacterium lacticum Lactobacillus, 30% Halomonas hamiltonii Halomonas hanzii;

[0056] S2: Put the MEFS engineering bacteria into the first wastewater with a salinity of 1.5% for fermentation pretreatment, the influent COD concentration is 5500 mg / L, and the fermentation pretreatment section is treated to 1100 mg / L, and the residence time is 6 days. COD removal rate is 80%;

[0057] After the pretreatment effluent is hydrolyzed and acidified, it enters the continuous AAO biological treatment process f...

Embodiment 3

[0063] The sulfonamide high-salt wastewater contains sulfonamide, sulfachloropyridazine and sulfaclodapyrizine sodium, and its bioengineering bacteria treatment method includes the following steps:

[0064] S1: According to the target degradation substances in the water quality of sulfonamide high-salt wastewater as the main carbon and energy sources, the MEFS engineering flora was obtained, including 55% Pseudomonas alcaliphila Pseudomonas alcaligenes, 10% Microbacterium lacticum Lactobacillus, 35% of Halomonas hamiltonii Halomonas hanzii;

[0065] S2: put MEFS engineering bacteria into the first wastewater with a salinity of 1.6% for fermentation pretreatment, the influent COD concentration is 5300 mg / L, and the fermentation pretreatment section is treated to 1093 mg / L, and the residence time is 6 days. COD removal rate is 79.4%;

[0066] After the pretreatment effluent is hydrolyzed and acidified, it enters the continuous AAO biological treatment process for treatme...

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Abstract

The invention relates to the technical field of wastewater treatment, and discloses a sulfonamide high-salinity wastewater bioengineering bacterium treatment method which comprises the following steps: S1, screening according to the water quality of sulfonamide high-salinity wastewater to obtain MEFS engineering flora; s2, putting the MEFS engineering flora into the first wastewater for domestication and amplification; s3, putting the MEFS engineering flora obtained in S2 into second wastewater for fermentation pretreatment; and S4, diluting the pretreated effluent, treating in a continuous two-stage AO biological treatment process, and discharging after reaching the standard. The MEFS engineering flora adopted by the invention has unique advantages in treatment of sulfonamide high-salinity wastewater, and the biodegradability and treatment efficiency of the high-concentration wastewater are improved; the high-concentration wastewater is subjected to biological pretreatment, so that the biotoxicity of the high-concentration wastewater is reduced, the load of a subsequent conventional system is reduced as much as possible, and the treatment cost is reduced through a conventional biological treatment process.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a bioengineering bacteria treatment method for sulfonamide high-salt wastewater. Background technique [0002] Sulfonamides (SAs) are a general term for a class of drugs with a sulfanilamide structure, and are a class of chemotherapeutic drugs used to prevent and treat bacterial infectious diseases. The wastewater produced in the production process of sulfa drugs has the characteristics of high concentration, high toxicity, high salt, and difficult biodegradation. At present, the methods for treating sulfa wastewater mainly include adsorption method, wet catalytic oxidation method, Fenton method, ozone oxidation method, biological degradation method, etc. However, the conventional biochemical treatment of sulfonamide wastewater is difficult, and it is urgent to develop a more efficient biological treatment process. [0003] The "Mixed Fermentation of Engineering St...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F101/30
CPCC02F3/34C02F2101/40Y02W10/10
Inventor 宋少林曾杲
Owner 江苏合普环保科技有限公司