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A chemical and pharmaceutical wastewater pretreatment strengthening device and its strengthening treatment method

A technology for chemical and pharmaceutical wastewater and strengthening device, which is applied in special compound water treatment, oxidized water/sewage treatment, multi-stage water treatment, etc. Treatment effect, no secondary pollution effect

Active Publication Date: 2016-06-22
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pretreatment effect of chemical and pharmaceutical wastewater often affects the final treatment result of wastewater, but the ideal pretreatment effect cannot be achieved with the existing traditional technology and process methods, so a new technology is needed to improve the pretreatment effect of wastewater. so that the subsequent processing will be smoother
At the same time, with the implementation of the "Chemical Synthesis Pharmaceutical Industry Water Pollutant Discharge Standard" (GB21904-2008), the existing chemical and pharmaceutical wastewater treatment technology can no longer meet the new environmental discharge standard, and the wastewater treatment stations of various chemical and pharmaceutical companies exist. The upgrading of old wastewater treatment technology and the problem of process standard upgrading make us have to pay attention to the pretreatment effect of chemical and pharmaceutical wastewater, so as to ensure the normal operation and effect of the subsequent biochemical stage

Method used

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  • A chemical and pharmaceutical wastewater pretreatment strengthening device and its strengthening treatment method
  • A chemical and pharmaceutical wastewater pretreatment strengthening device and its strengthening treatment method
  • A chemical and pharmaceutical wastewater pretreatment strengthening device and its strengthening treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The method for intensifying the treatment of chemical and pharmaceutical wastewater by utilizing the above-mentioned chemical and pharmaceutical wastewater pretreatment strengthening device includes the following steps:

[0030] (1) First, inject chemical and pharmaceutical wastewater into the enhanced coagulation reaction tank 1, and add a coagulant through the dosing system in the enhanced coagulation reaction tank 1. The coagulant includes a coagulant made of polyaluminum chloride (PAC) and polyacrylamide (PAM), and the mass ratio of the polyaluminum chloride and polyacrylamide is 1:1, in addition, the addition of the coagulant is 180g / (m 3 waste water), the hydraulic retention time in the enhanced coagulation reaction tank is 8min;

[0031] (2) The effluent from the enhanced coagulation reaction tank 1 enters the first vertical flow sedimentation tank 2, and the hydraulic retention time in the first vertical flow sedimentation tank 2 is 2.5h;

[0032] (3) The efflu...

Embodiment 2

[0036] The steps and reaction conditions are basically the same as in Example 1, except that the pH value in the heterogeneous Fenton oxidation reactor 3 in step (3) is controlled to be 5.

Embodiment 3

[0038] The steps and reaction conditions are basically the same as in Example 1, except that the residence time of the ozone oxidation reaction tank in step (4) is 40 min.

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Abstract

The invention discloses a chemical and pharmaceutical wastewater pretreatment strengthening device, which comprises a sequentially connected enhanced coagulation reaction tank, a first vertical flow sedimentation tank, a multiphase Fenton oxidation reactor, an ozone oxidation treatment system and a second vertical flow Sedimentation tank. At the same time, the strengthening processing method thereof is disclosed. Compared with the traditional homogeneous Fenton method, the heterogeneous Fenton oxidation method of the present invention has a wider suitable pH value, faster oxidation reaction rate, better degradation effect, and can provide catalyst iron ions for ozone at the same time; Pollutants have a strong oxidative degradation effect, which can convert complex organic pollutants into simple organic matter, realize decolorization, deodorization, COD reduction and improve biodegradability, etc., and ozone reacts with organic pollutants quickly and effectively Good, no secondary pollution, can be produced on site, the advantages of easy access to raw materials, and the multiphase Fenton oxidation and ozone oxidation form an organic coupling, which can effectively strengthen the pretreatment effect of chemical and pharmaceutical wastewater.

Description

technical field [0001] The invention relates to a chemical and pharmaceutical wastewater pretreatment strengthening device and a strengthening method, belonging to the technical field of sewage devices. Background technique [0002] The wastewater in the chemical and pharmaceutical industry often has a very high concentration of organic matter, and most of the wastewater is toxic and harmful. It is one of the most difficult wastewater in the field of industrial water treatment, which puts great pressure on the environmental protection, energy saving and emission reduction of pharmaceutical companies. At present, there are no treatment processes that can be widely promoted at home and abroad. Now common combination processes include: physical and chemical pretreatment plus biological treatment, electrochemical pretreatment plus biological treatment, anaerobic pretreatment plus conventional biological treatment, etc. [0003] In recent years, domestic researchers have conducte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
CPCC02F1/5236C02F1/5272C02F1/725C02F1/78C02F9/00C02F2103/343C02F2301/08C02F2305/026
Inventor 蒋胜韬白书立王三秀管玉江祝建中
Owner TAIZHOU UNIV