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Treating method for high-salinity pharmaceutical wastewater

A pharmaceutical wastewater and treatment method technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as refractory degradation, achieve strong biological toxicity, and improve the biochemical properties of wastewater The effect of stability and water quality

Active Publication Date: 2016-01-20
山东鼎达实业有限公司
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Problems solved by technology

[0004] In order to solve the shortcomings of the existing high-salt pharmaceutical wastewater process, reduce the concentration of sulfate in pharmaceutical wastewater, so that it can be effectively treated and discharged up to the standard, the present invention adopts the steps of physical and chemical pretreatment, desulfurization biological treatment, physical and chemical advanced treatment, final sedimentation and drainage, etc. Pharmaceutical wastewater with high COD concentration, high sulfate concentration, and containing pharmaceutical intermediates and antibiotic residues is suitable for the characteristics of high concentration, refractory degradation, and strong biological toxicity of pharmaceutical wastewater. The process combination is reasonable to ensure discharge standards

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Embodiment 1

[0042]A pharmaceutical factory mainly produces chemically synthesized pharmaceuticals, pharmaceutical intermediates, and semi-synthetic antibiotics. The wastewater produced mainly comes from production processes such as extraction, centrifugation, filtration, distillation, and salt washing. The types of pollutants are complex, and the concentration of COD and sulfate is high. . The water quality indicators are shown in Table 1. Adopt processing method of the present invention to process, operate as follows:

[0043] High-salt pharmaceutical wastewater enters the catalytic micro-electrolytic cell, the mass ratio of iron-carbon-metal is 12:3:4, and the metal is a composition of aluminum and copper with a mass ratio of 1:1, and the dissolved oxygen concentration is 1.0mg / L , the reaction time is 90 minutes; after the reaction, the waste water enters the desulfurization tank Ⅰ, the molar ratio of the amount of lime added to the sulfate radical in the water is 2:1, and the effluen...

Embodiment 2

[0048] A pharmaceutical factory mainly produces antibiotics and antineoplastic drugs. The wastewater produced mainly comes from production processes such as extraction, centrifugation, filtration, distillation, and salt washing. The types of pollutants are complex, and the concentrations of COD and sulfate are high. The water quality indicators are shown in Table 2. Adopt processing method of the present invention to process, operate as follows:

[0049] High-salt pharmaceutical wastewater enters the catalytic micro-electrolytic cell, the mass ratio of iron-carbon-metal is 15:7:8, the metal is a composition of aluminum and zinc-copper in a mass ratio of 1:1, and the dissolved oxygen concentration is 1.5mg / L, the reaction time is 120min; after the reaction is completed, the wastewater enters the desulfurization tank I, the molar ratio of the amount of lime added to the sulfate radical in the water is 4:1, and the effluent enters the sedimentation tank for precipitation; the su...

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Abstract

The invention provides a treating method for high-salinity pharmaceutical wastewater. According to the treating method, the steps of materialization pretreatment, desulfuration biological treatment, materialization deep treatment, settlement and drainage and the like are adopted for treating the pharmaceutical wastewater which is high in COD concentration and high in sulfate radical concentration and contains medical intermediates and antibiotic residues. The treating method is fit for characteristics of the pharmaceutical wastewater, such as high concentration, refractory and strong biotoxicity. According to the invention, the technical combination is reasonable and the standard emission is ensured.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a treatment method for high-salt pharmaceutical wastewater. Background technique [0002] In the process of pharmaceutical production, a variety of raw materials and solvents are often used. The production process is complicated, the production process is long, the reaction is complicated, and there are many by-products. Therefore, the composition of the wastewater is very complicated. The pollutant content in the wastewater is high, the COD concentration is large and fluctuating, and the color The depth is deep, the concentration of SS is high, and it contains many difficult biodegradable and toxic substances. For example, wastewater from the production of antibiotic pharmaceutical intermediates such as clarithromycin and ciprofloxacin, semi-synthetic intermediate wastewater from the synthesis of cephalexin, cephradine and cefadroxil, and fermentation wastewater f...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 刘树芹
Owner 山东鼎达实业有限公司
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