Treatment method and device for pharmaceutical wastewater

A pharmaceutical wastewater and treatment method technology, applied in the field of water treatment, can solve the problems of complex operation, high treatment cost, high operating cost, etc., and achieve the effects of stable flux, high retention rate and high color value removal rate

Inactive Publication Date: 2016-07-27
JIANGSU JIUWU HITECH
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Problems solved by technology

The current treatment methods have problems such as high treatment cost, complicated operation, poor load impact resistance, and lack of broad spectrum.
The patent CN101863535A adopts the electrolysis method to further treat pharmaceutical wastewater, and the power consumption reaches 40.47KW·h / m 3 , high power consumption leads to high actual operating costs
Patent CN102807303A discloses an advanced treatment process for pharmaceutical wastewater, which has poor applicability to broad spectrum and poor treatment effect for other types of pharmaceutical wastewater
[0005] When the above-mentioned pharmaceutical wastewater treatment technologies are used alone for advanced wastewater treatment or in combination with existing wastewater treatment technologies, the treated wastewater cannot meet the discharge requirements, and the combination is also difficult to adapt to pharmaceutical wastewater with complex chemical components, especially large heterocyclic compounds. Therefore, it is necessary to conduct further research and exploration on the treatment process of difficult-to-treat pharmaceutical wastewater.

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  • Treatment method and device for pharmaceutical wastewater
  • Treatment method and device for pharmaceutical wastewater
  • Treatment method and device for pharmaceutical wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] In this example, the wastewater produced in the synthetic antibiotic workshop is treated. Its main components are amide compounds, isopropyl ether, chloroform, etc. The color of the wastewater is orange-red, there are many types of organic pollutants, and the biodegradability is poor. BOD 5 / COD Cr The value is small, the specific conditions of the effluent water quality are: conductivity 0.33s / cm, pH 9.27, dissolved oxygen 7.17mg / L, COD Cr 72000mg / L, BOD6.6mg / L, turbidity 158mg / L.

[0059] After the wastewater is treated in the primary sedimentation tank, it is treated by aerobic-anaerobic-aerobic biochemical system. The aerobic biochemical tank is operated under the following conditions: the inlet temperature is 30~32℃, the dissolved oxygen at the end of the contact oxidation tank is 2.5mg / L, the sludge concentration is 3000mg / L, the sludge sedimentation ratio is 30%, the mixed solution is refluxed 150%, and the reaction stays. The time is 10h; the anaerobic biochemical t...

Embodiment 2

[0063] In this example, the wastewater produced in the synthetic antibiotic workshop is treated. Its main components are amide compounds, isopropyl ether, chloroform, etc. The color of the wastewater is orange-red, there are many types of organic pollutants, and the biodegradability is poor. BOD 5 / COD Cr The value is small, the specific conditions of the effluent water quality are: conductivity 0.33s / cm, pH 9.27, dissolved oxygen 7.17mg / L, COD Cr 72000mg / L, BOD6.6mg / L, turbidity 158mg / L.

[0064] After the wastewater is treated in the primary sedimentation tank, it is treated by aerobic-anaerobic-aerobic biochemical system. The aerobic biochemical tank is operated under the following conditions: the inlet temperature is 30~32℃, the dissolved oxygen at the end of the contact oxidation tank is 2.5mg / L, the sludge concentration is 3000mg / L, the sludge sedimentation ratio is 30%, the mixed solution is refluxed 150%, and the reaction stays. The time is 10h; the anaerobic biochemical t...

Embodiment 3

[0069] The waste water produced in the Chinese patent medicine workshop is processed in this embodiment. The waste water is dark brown in color, has many kinds of organic pollutants, and has good biodegradability. BOD 5 / COD Cr The value is high, the specific conditions of the effluent water quality are: SS450mg / L, pH 6.6, COD Cr 4100mg / L, BOD1500mg / L, color 895.

[0070] After the wastewater is treated in the primary sedimentation tank, it is treated by an aerobic biochemical system. The aerobic biochemical tank is operated under the following conditions: the inlet temperature is 30~32℃, the dissolved oxygen at the end of the contact oxidation tank is 3mg / L, the sludge concentration is 10000mg / L, the sludge sedimentation ratio is 30%, the mixed solution is refluxed 150%, and the reaction residence time 8h; After treatment, the COD of the product water is 294.1mg / L, and the color is 100.

[0071] After the treated water is separated by solid-liquid in the secondary sedimentation ta...

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Abstract

The invention relates to a treatment method and device for pharmaceutical wastewater and belongs to the technical field of water treatment.The treatment method comprises the steps that firstly, biochemical treatment is conducted on the pharmaceutical wastewater; secondly, the outlet water obtained after biochemical treatment is oxidized and / or ultra-filtered; thirdly, the produced water in the second step is reversely osmosed.By means of the method and the device, the pharmaceutical wastewater can reach an emission standard, the reject rate of reverse osmosis membrane outlet water is high, the color value removal rate is high, and flux is stable.

Description

Technical field [0001] The invention relates to a method and device for treating pharmaceutical wastewater, belonging to the technical field of water treatment. Background technique [0002] Pharmaceutical wastewater mainly includes four categories: fermentation production wastewater, chemical synthesis drug production wastewater, traditional Chinese medicine production wastewater, and plant extraction production process wastewater. The wastewater of the pharmaceutical industry is usually complex, with many types of organic pollutants, high concentrations, high COD values ​​and large fluctuations. The BOD of wastewater 5 / COD value difference, deep color, high toxicity, high concentration of suspended solids SS, etc., is one of the most polluted and most difficult to treat industrial wastewater in China. [0003] At present, the main process of pharmaceutical wastewater treatment adopts "pretreatment + anaerobic treatment + aerobic treatment", and a certain amount of difficult-to-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/441C02F1/444C02F1/4693C02F1/72C02F3/30C02F9/00C02F2103/003
Inventor 叶圣武杨积衡彭文博孙桂花熊福军范丛军范克银
Owner JIANGSU JIUWU HITECH
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