Method for advanced treatment of waste water by four-phase catalytic oxidation

A four-phase catalytic oxidation and advanced treatment technology, which is applied in chemical instruments and methods, chemical/physical processes, water/sewage multi-stage treatment, etc., can solve the problems of high operating cost and large dosage of chemicals, and achieve high operating cost , Reduce the water output index, the effect of purifying water quality

Active Publication Date: 2012-09-19
福建微水环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The hypochlorite strong oxidation method based on bleaching liquid requires a large amount of chemicals to be added and high operating costs

Method used

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  • Method for advanced treatment of waste water by four-phase catalytic oxidation
  • Method for advanced treatment of waste water by four-phase catalytic oxidation
  • Method for advanced treatment of waste water by four-phase catalytic oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The test wastewater in this example is leather wastewater. After physical, chemical and biochemical treatment, the wastewater directly enters the NdFeB magnet and Cu-Ti-Fe / Al 2 o 3 The reaction in the four-phase catalytic oxidation reactor of the honeycomb ceramic catalyst bed, and the water quality indicators when entering the treatment system are as follows:

[0044] COD cr : 200mg / l;

[0045] Chroma: 300 times;

[0046] Project water volume is 4000m 3 / d, the process conditions for reactor operation are as follows:

[0047] Dwell time: 30 minutes;

[0048] Temperature: 20-35°C;

[0049] Aeration gas water ratio: 10:1;

[0050] Cu-Ti-Fe / Al described in 2 o 3 The preparation method of the honeycomb ceramic catalyst in the honeycomb ceramic catalyst is as follows: adopt the sol-gel method to prepare an alumina coating on the honeycomb ceramic carrier, and in the pseudo-boehmite dry rubber powder (Shandong Aluminum Company, brand P-DF-07-LSi ) with a certain co...

Embodiment 2

[0061] The test wastewater in this example is the penicillin fermentation wastewater. After the wastewater is treated by physical, chemical and biochemical treatment, it directly enters the magnet with NdFeB magnet and Cu-Ti-Fe / Al 2 o 3 The reaction in the four-phase catalytic oxidation reactor of the honeycomb ceramic catalyst bed, and the water quality indicators when entering the treatment system are as follows:

[0062] COD cr : 300mg / l;

[0063] Chroma: 200 times;

[0064] Project water volume is 2000m 3 / d, the process conditions for reactor operation are as follows:

[0065] Dwell time: 20 minutes;

[0066] Temperature: 30-40°C;

[0067] Aeration gas water ratio: 10:1;

[0068] The Cu-Ti-Fe / Al 2 o 3 The preparation method of the honeycomb ceramic catalyst in the honeycomb ceramic catalyst is as follows: adopt the sol-gel method to prepare an alumina coating on the honeycomb ceramic carrier, and in the pseudo-boehmite dry rubber powder (Shandong Aluminum Company...

Embodiment 3

[0079] The test wastewater in this example is coking wastewater. After physical, chemical and biochemical treatment, the wastewater directly enters the magnet with NdFeB magnet and Cu-Ti-Fe / Al 2 o 3 The reaction in the four-phase catalytic oxidation reactor of the honeycomb ceramic catalyst bed, and the water quality indicators when entering the treatment system are as follows:

[0080] COD cr : 400mg / 1;

[0081] Chroma: 500 times;

[0082] Project water volume is 1500m 3 / d, the process conditions for reactor operation are as follows:

[0083] Duration of stay: 15 minutes;

[0084] Temperature: 30-45°C;

[0085] Aeration gas water ratio: 10:1;

[0086] The Cu-Ti-Fe / Al 2 o 3 The preparation method of the honeycomb ceramic catalyst in the honeycomb ceramic catalyst is as follows: adopt the sol-gel method to prepare an alumina coating on the honeycomb ceramic carrier, and in the pseudo-boehmite dry rubber powder (Shandong Aluminum Company, brand P-DF-07-LSi ) with a ce...

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Abstract

The invention discloses a waste water advanced treatment method by utilizing four-phase catalytic oxidation reactor, comprising the following steps: waste water after biological treatment reacts in a four-phase catalytic oxidation reactor provided with a neodymium iron boron magnet and a Cu-Ti-Fe / Al2O3 honeycomb ceramic catalyst bed; H2O2 and FeSO4 are added into the reactor, and aeration is carried out; hydroxyl radical.OH is transferred at normal temperature and pressure under the comprehensive condition of micro electric, magnetic and gas fields, and an organic matter in the waste water are oxidized under the action of strong oxidation of hydroxyl radical.OH with oxidation potential reaching up to 2.80V and in chain reaction of various active radicals produced during oxidation; and thewaste water after reaction enters into a post reaction tank to react continuously, polyacrylamide coagulant aid is added from the rear end of the post reaction tank, coagulation is carried out, then the waste water enters into a sedimentation tank for mud water separation, and effluent is discharged after reaching the standard. The method disclosed by the invention is developed for water quality characteristic of waste water difficult to be biologically degraded and can be used for effectively realizing efficient removal of the organic matter (CODcr) and chromaticity.

Description

technical field [0001] The invention relates to an advanced treatment method for biochemically difficult wastewater, in particular to a four-phase catalytic oxidation advanced treatment method for wastewater, which belongs to the field of environmental protection wastewater treatment. Background technique [0002] With the rapid development of industry in recent years, the problem of wastewater pollution has become more and more serious. At present, biological treatment technology is the most widely used in wastewater treatment. It has the characteristics of high removal efficiency and low operating cost. However, due to the presence of Biologically non-degradable organic matter (COD(NB) - non-biodegradable organic matter), due to the existence of COD(NB), many industrial wastewater cannot be discharged up to standard by biochemical treatment alone, for example: there is 300-500mg / l COD in coking wastewater ( NB), there is 150-300mg / l COD(NB) in the tannery wastewater, there...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04B01J23/745B01J27/053
Inventor 徐军富王珏
Owner 福建微水环保股份有限公司
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