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Advanced treatment method of chemical industry pharmaceutical wastewater biochemical tail water

A technology for advanced treatment of chemical and pharmaceutical wastewater, applied in the direction of oxidation water/sewage treatment, water/sewage treatment, biological water/sewage treatment, etc., can solve the problem of lack of advanced treatment methods for pharmaceutical wastewater, and achieve stable structure and efficient treatment effect , a wide range of effects

Active Publication Date: 2016-10-12
TAIZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to solve the problem of the lack of effective advanced treatment methods for pharmaceutical wastewater in the prior art, the present invention proposes an advanced treatment method for chemical and pharmaceutical wastewater biochemical tail water with good treatment effect, high efficiency and low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for advanced treatment of biochemical tail water of chemical and pharmaceutical wastewater, specifically comprising the following steps:

[0023] (1) Enhanced coagulation and sedimentation treatment process: the biochemically treated tail water is introduced into the coagulation sedimentation tank, and the tail water is sequentially treated with dry injection of composite flocculants and wet injection of composite flocculants. First, each L of tail water is dry Add 25 mg of composite coagulant, and the dry composite coagulant includes the following components in terms of mass: 30 parts of polysilicoaluminum sulfate, 6 parts of chitin, and 13 parts of decolorizer; 30 minutes after dry dosage of composite flocculant, wet For the addition of the composite flocculant, the amount of active ingredients other than water is 10 mg per L of tail water wet-cast composite flocculant, and the wet-cast composite flocculant includes the following components in terms of mass: 5...

Embodiment 2

[0028] A method for advanced treatment of biochemical tail water of chemical and pharmaceutical wastewater, specifically comprising the following steps:

[0029] (1) Enhanced coagulation and sedimentation treatment process: the biochemically treated tail water is introduced into the coagulation sedimentation tank, and the tail water is sequentially treated with dry injection of composite flocculants and wet injection of composite flocculants. First, each L of tail water is dry 30 mg of composite coagulant was added, and the dry composite coagulant included the following components in terms of mass: 45 parts of polysilicoaluminum sulfate, 12 parts of chitin, and 18 parts of decolorizer; For the addition of the composite flocculant, the amount of active ingredients other than water is 15 mg per L of tail water wet-cast composite flocculant, and the wet-cast composite flocculant includes the following components in terms of mass: 8 parts of polyethylene oxide, 14 parts Crystallin...

Embodiment 3

[0034] A method for advanced treatment of biochemical tail water of chemical and pharmaceutical wastewater, specifically comprising the following steps:

[0035] (1) Enhanced coagulation and sedimentation treatment process: the biochemically treated tail water is introduced into the coagulation sedimentation tank, and the tail water is sequentially treated with dry injection of composite flocculants and wet injection of composite flocculants. First, each L of tail water is dry Add 28 mg of composite coagulant, and the dry composite coagulant includes the following components in terms of mass: 38 parts of polysilicoaluminum sulfate, 9 parts of chitin, and 15 parts of decolorizer; For the addition of the composite flocculant, the amount of active ingredients other than water is 12 mg per L of tail water wet-cast composite flocculant, and the wet-cast composite flocculant includes the following components in terms of mass: 7 parts of polyacrylamide, 12 parts Crystalline aluminum ...

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Abstract

The invention discloses an advanced treatment method of chemical industry pharmaceutical wastewater biochemical tail water. A reinforced coagulative precipitation treatment technique, a rapid filtration technique, a catalytic ozone oxidation treatment technique and a magnetic microsphere resin adsorption treatment technique are organically combined for treatment; and in the reinforced coagulative precipitation treatment stage, the microbial flocculant, natural high-polymer flocculant, inorganic flocculant and other substances generate useful substances and secretions thereof in the growth process so as to form the substrates and raw materials for mutual growth, a complex-composition stable-structure wide-function microbial flora with various microbes is formed through the mutual symbiotic and proliferation relationship, and the three subsequent technique are combined as assistants to implement mutual benefits in the chemical industry pharmaceutical biochemical tail water purification process, thereby displaying the maximal combined advantages. The method has efficient treatment effect, so that the wastewater reaches the reclaimed water recycling standard.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to an advanced treatment method for biochemical tail water of chemical and pharmaceutical wastewater. Background technique [0002] With the rapid development of my country's chemical and pharmaceutical industries, the pollution and prevention of wastewater produced by chemical and pharmaceutical companies has attracted widespread attention. According to statistics, in 2009, the total discharge of pharmaceutical wastewater in my country reached 527 million tons; in 2011, there were about 5,000 pharmaceutical companies in my country, and the discharge of wastewater accounted for 2.0% of the discharge of industrial wastewater. Due to the variety of chemicals and drugs and the different production processes, the composition of chemical and pharmaceutical wastewater is very complex, including solvent wastewater, by-product wastewater, washing wastewater, and extraction wastewater generated d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/48C02F1/5236C02F1/5263C02F1/56C02F1/78C02F3/34C02F3/348C02F9/00C02F2103/343
Inventor 蒋胜韬朱华跃管玉江蒋茹宗恩敏祝建中王三秀
Owner TAIZHOU UNIV
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