Method for treating sewage of pharmaceutical factory

A sewage treatment method and technology of a pharmaceutical factory, applied in water/sewage treatment, light water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as affecting the health of surrounding residents and destroying the surrounding environment.

Inactive Publication Date: 2019-12-31
常飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wastewater produced by pharmaceutical factories in many places is discharged randomly without

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for treating sewage in a pharmaceutical factory, which is specifically implemented according to the following steps: the sewage is passed into a primary filter tank for preliminary filtration, and then the sewage is passed into a dust sand tank, and polyacrylamide, polydimethyldiallyl Ammonium chloride, the mass-to-capacity ratio of sewage is 120g: 1L. There is a variable-speed agitator in the dust-sand tank, stirring for 5 minutes, and then stirring at a speed of 150r / min for 30 minutes to flocculate, and then the sewage is passed into the aeration tank and aerated After 1 hour, the sewage in the aeration tank was passed into the photoreactor, and H2 with a mass concentration of 20% was added to the supernatant. 2 o 2 solution, use a 25W mercury lamp to illuminate and stir, after 20min; the added molar concentration is 0.1mM Na 2 SO 3 , until no air bubbles are generated in the sewage; the effluent is analyzed for treatment results, and then sent to the cont...

Embodiment 2

[0028] A method for treating sewage in a pharmaceutical factory, which is specifically implemented according to the following steps: the sewage is passed into a primary filter tank for preliminary filtration, and then the sewage is passed into a dust sand tank, and polyacrylamide, polydimethyldiallyl Ammonium chloride, the mass-to-volume ratio of sewage is 150g: 1L. There is a variable-speed agitator in the dust-sand tank, stirring for 10 minutes, and then stirring at a speed of 200r / min for 35 minutes to flocculate, and then the sewage is passed into the aeration tank and aerated After 1 hour, the sewage in the aeration tank was passed into the photoreactor, and H2 with a mass concentration of 20% was added to the supernatant. 2 o 2 solution, use a 25W mercury lamp to illuminate and stir, after 25min; the added molar concentration is 0.1mM Na 2 SO 3 , until no air bubbles are generated in the sewage; the effluent is analyzed for treatment results, and then sent to the conta...

Embodiment 3

[0031] A method for treating sewage in a pharmaceutical factory, which is specifically implemented according to the following steps: the sewage is passed into a primary filter tank for preliminary filtration, and then the sewage is passed into a dust sand tank, and polyacrylamide, polydimethyldiallyl Ammonium chloride, the mass-to-volume ratio of sewage is 180g: 1L. There is a variable-speed agitator in the dust-sand tank. Stir for 15 minutes, then stir for 40 minutes at a speed of 250r / min for flocculation, and then pass the sewage into the aeration tank and aerate After 1 hour, the sewage in the aeration tank was passed into the photoreactor, and H2 with a mass concentration of 20% was added to the supernatant. 2 o 2 solution, use a 25W mercury lamp to illuminate and stir, after 30min; the added molar concentration is 0.1mM Na 2 SO 3 , until no air bubbles are generated in the sewage; the effluent is analyzed for treatment results, and then sent to the contact disinfection...

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Abstract

The invention discloses a method for treating sewage of a pharmaceutical factory. The method comprises the following steps: introducing sewage into a primary filtering tank for preliminary filtration,introducing the sewage into a dust sand tank, adding a flocculating agent with a mass-volume ratio of (120-180g):1L to the sewage, carrying out stirring for 5-15 min, then carrying out stirring for 30-40 min at a rotating speed of 150-250 r/min, introducing sewage into an aeration tank, and introducing oxygen into the aeration tank; introducing the sewage in the aeration tank into a photoreactor,adding H2O2 with a mass content of 20%, carrying out irradiating with ultraviolet light, and carrying out stirring for 20-30 min; adding Na2SO3 with a molar concentration of 0.1 mM until no bubbles are generated in the sewage; and analyzing the result, and sending the sewage into a contact disinfection tank to react the sewage with ClO2 for disinfection, and discharging the effluent of the disinfection tank into a common sewage treatment tank. The method provided by the invention can be used to carry out oxidative decomposition on drug impurities in the wastewater of the pharmaceutical factory, pre-treat drug wastewater and prevent environmental pollution.

Description

technical field [0001] The invention relates to the field of sewage treatment discharged from pharmaceutical factories, in particular to a method for treating sewage from pharmaceutical factories. Background technique [0002] Pharmaceuticals are mainly divided into chemical synthesis and biosynthesis. There are many chemical synthesis. With the increase of pharmaceutical scale, pharmaceutical wastewater also increases rapidly. The composition of pharmaceutical wastewater is complex, with many by-products and complex components. According to relevant domestic testing statistics, The COD concentration range of chemical synthesis pharmaceutical companies is 423-32140mg / L, most companies are below 15000mg / L; the BOD concentration range is 300-800mg / L, most companies are below 1000mg / L; the SS concentration range is 80- 2318mg / L, most enterprises are below 500mg / L; NH3-N concentration ranges from 4.8-1764mg / L. However, the wastewater produced by pharmaceutical factories in many...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F103/34
CPCC02F1/32C02F1/56C02F1/766C02F9/00C02F2103/343
Inventor 常飞
Owner 常飞
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