Lincomycin production wastewater treatment method

A technology for the production of wastewater and lincomycin, which is applied in biological water/sewage treatment, water/sewage treatment, oxidized water/sewage treatment, etc. It can solve the problems of unfavorable energy saving and emission reduction, difficulty in stably meeting discharge standards, long process debugging period, etc. problem, to achieve the effect of high treatment efficiency, 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

After combined treatment, the COD is still higher than 200mg/L, and it needs to be diluted with clean water or circulating water to meet the discharge requirements, which increases the treatment cost per unit of wastewater and is not conducive to energy saving and emission reduction.
In addition, the high salt content of wastewater will al

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The quality of wastewater produced by the lincomycin production process in a factory is: COD 8000mg / L, salt content 1.5wt%, SS 2000mg / L, ammonia nitrogen concentration 20mg / L, pH 8.0.

[0036] First, the ozone oxidation method is used to treat the lincomycin 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≥0.6. 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 60mg / L. The concentration of suspended solids in the coagulation effluent is reduced to below 500mg / L. After coagulation and precipitation, filter to remove the precipitate, and use a batch centrifuge to filter, the rotation speed is controlled at 3000rpm, and the centrifugation time is 5min. The effluent enters the internal circulation a...

Embodiment 2

[0038] The quality of wastewater produced by the lincomycin production process in a factory is as follows: COD is 11000mg / L, salt content is 2wt%, SS is 3000mg / L, ammonia nitrogen concentration is 50mg / L, and pH is 8.5.

[0039] First, the ozone oxidation method is used to treat the lincomycin production wastewater. The dosage of the ozone oxidant is 40mg / L, the inlet concentration of the ozone oxidant gas is 120mg / L, the hydraulic retention time is 40min, and the BOD of the ozone oxidation effluent 5 / COD≥0.6. 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 50mg / L. The concentration of suspended solids in the coagulation effluent is reduced to below 500mg / L. After coagulation and precipitation, filter to remove the precipitate, and use a batch centrifuge to filter, the rotation speed is controlled at 3000rpm, and the centrifugation time is 5min. The effluent ...

Embodiment 3

[0041] 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 water is lower than 100mg / L, and the ammonia nitrogen concentration is lower than 10mg / L.

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PUM

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Abstract

The invention relates to a lincomycin production wastewater treatment method. The method comprises the following steps: (1) carrying out pretreatment on lincomycin production wastewater by an advanced oxidation technology; (2) carrying out coagulating sedimentation on an oxidation effluent, filtering to remove generated precipitates; (3) carrying out anaerobic biochemical treatment on the filtered effluent; and (4) carrying out biological contact oxidation process on an anaerobic effluent while pouring salt-tolerant COD-removal strain. The salt-tolerant COD-removal strain is Paracoccus sp. FSTB-2 and/or Pseudomonas stutzeri FSTB-5, and was collected in the China General Microbiological Culture Collection Center on June 1, 2015. The collection number is CGMCC No. 10938 and CGMCC No. 10940. By the technology of advanced oxidation-coagulating sedimentation-anaeronic biochemical treatment and by pouring specific salt-tolerant COD-removal strain into a contact oxidation unit, antibiotic in wastewater can be resisted, and efficient stable removal of COD in wastewater is realized. The method of the invention has characteristics of simple process, high treatment efficiency, low treatment cost and the like.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment method for lincomycin 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. Lincomycin is a class of antibiotics that can act on the 50S subunit of the ribosome of sensitive bacteria to prevent the extension of the peptide chain, thereby inhibiting the protein synthesis of bacterial cells. Lincomycin is often used as a bacteriostatic agent at low concentrations. It can be used as a fungicide for most Gram-positive bacteria and some highly sensitive bacteria such as anaerobic bacteria, so it has a certain inhibitory effect on microorganisms in biochemic...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F1/52C02F1/5245C02F1/56C02F1/78C02F3/1263C02F3/1268C02F3/28C02F3/2833C02F3/284C02F3/2846C02F3/2873C02F3/34C02F9/00
Inventor 赵胜楠郭志华高会杰孙丹凤
Owner CHINA PETROLEUM & CHEM CORP
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