Treating method for wastewater produced in production of rifamycin

A technology for rifamycin and waste water production, applied in biological water/sewage treatment, microbial-based methods, multi-stage water/sewage treatment, etc., to achieve the effects of simple process, low treatment cost, and small dosage

Active Publication Date: 2017-05-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the dosage of the above-mentioned high-efficiency degrading bacteria is higher than 200mg / L, the COD removal rate can only reach more than 80%, and the treatment effect needs to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The quality of wastewater produced by the rifamycin production process in a factory is: COD is 10000mg / L, BOD 5 3000 mg / L, SS 2000mg / L, ammonia nitrogen concentration 50mg / L, pH 6.0.

[0035] Firstly, the ozone oxidation method is used to treat the rifamycin production wastewater. The dosage of the ozone oxidant is 40mg / L, the inlet concentration of the ozone oxidant gas is 100mg / L, the hydraulic retention time is 30min, and the ozone oxidation effluent BOD 5 / COD≥0.6. Then carry out coagulation and sedimentation treatment, first add polyacrylamide, the dosage of polyacrylamide is 5mg / L, and then add polyferric sulfate, the dosage is 50mg / L. The concentration of suspended solids in the coagulation effluent drops below 500mg / L, and the pH value is 7.0. After coagulation and precipitation, filter to remove the precipitate, using a batch centrifuge, the speed is controlled at 3000rpm, and the centrifugation time is 5min. The effluent enters the internal circulation anae...

Embodiment 2

[0037] The quality of wastewater produced by the rifamycin production process in a factory is: COD is 8000mg / L, BOD 5 2000mg / L, SS 3000mg / L, ammonia nitrogen concentration 100mg / L, pH 5.0.

[0038] Firstly, the ozone oxidation method is used to treat the rifamycin production wastewater. The dosage of the ozone oxidant is 30mg / L, the inlet concentration of the ozone oxidant gas is 100mg / L, the hydraulic retention time is 30min, and the ozone oxidation effluent BOD 5 / COD≥0.4. Then carry out coagulation and sedimentation treatment, first add polyacrylamide, the dosage of polyacrylamide is 7mg / L, and then add ferric chloride, the dosage is 60mg / L, and the lime is added according to the pH value of the effluent is 7.0 add. The concentration of suspended solids in the coagulation effluent drops below 500mg / L, and the pH value is 7.0. After coagulation and precipitation, filter to remove the precipitate, using a batch centrifuge, the speed is controlled at 3000rpm, and the centri...

Embodiment 3

[0040] The treatment process and operating conditions are the same as in Example 1, the difference is that in step (4) the aerobic biochemical treatment unit is added with 0.3% of the volume of the treated wastewater per hour. The COD concentration in the water is lower than 100mg / L, and the ammonia nitrogen concentration is lower than 20mg / L.

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PUM

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Abstract

The invention relates to a treating method for wastewater produced in production of rifamycin. The treating method comprises the following steps: (1) pretreating wastewater produced in production of rifamycin by using advanced oxidation technology; (2) subjecting oxidation effluent to coagulating sedimentation and carrying out filtering to remove sediments; (3) carrying out anaerobic biochemical treatment on effluent of filtering; and (4) subjecting anaerobic effluent to treatment via a biological contact oxidation process and adding salt-resistant COD-removing bacteria, wherein the salt-resistant COD-removing bacteria are Paracoccus sp. FSTB-2 and / or Pseudomonas stutzeri FSTB-5, and Paracoccus sp. FSTB-2 and Pseudomonas stutzeri FSTB-5 are preserved in China General Microbiological Culture Collection Center on June 1, 2015, with accession numbers of CGMCC NO. 10938 and CGMCC NO. 10940, respectively. According to the invention, the process of advanced oxidation, coagulating sedimentation, anaerobic biochemical treatment and biological contact oxidation is employed, and the specific salt-resistant COD-removing bacteria are added into a contact oxidation unit and can tolerate antibiotics in the wastewater, so high-efficiency stable removal of CODs in the wastewater is realized; and the treating method has the characteristics of simple process, high treating efficiency, low treating cost, etc.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment method for rifamycin production wastewater. Background technique [0002] Antibiotics are a great discovery in human history. They have been widely used in medical and other fields, effectively protecting human health. However, during the production and application of antibiotics, a large amount of refractory organic wastewater containing antibiotics will be produced. If discharged directly, it will seriously endanger the water environment. Rifamycin antibiotics are a class of antibiotics produced by Streptomyces mediterranei. Their molecular structure is similar to that of phosphoenolpyruvate. They can compete with bacteria for the same transferase, inhibit the synthesis of bacterial cell walls and lead to bacterial death. Spectrum antibacterial effect, so it has an inhibitory effect on microorganisms in biochemical treatment processes. Rif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/56C02F3/34C12N1/20C12R1/01C12R1/38
Inventor 高会杰郭志华孙丹凤赵胜楠
Owner CHINA PETROLEUM & CHEM CORP
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