Method for simultaneously removing insoluble organic matter, total cyanogen and total nitrogen in wastewater of industrial park

A technology for refractory organic matter and industrial parks, applied in the field of industrial wastewater treatment, can solve the problems of high power consumption and operating costs, long generation cycle of ammonia oxidizing bacteria, and inability to remove total cyanide, etc., to achieve long filtration cycle and flushing effect Good, the effect of reducing the scale of flushing equipment

Inactive Publication Date: 2017-08-04
BEIJING CYCLE COLUMBUS ENVIRONMENTAL TECH RES INST CO LTD
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AI Technical Summary

Problems solved by technology

In the traditional nitrification and denitrification process, the generation cycle of ammonia oxidizing bacteria is long, the removal rate of total nitrogen is low, and the power consumption and operating cost are high
The cost of coagulation and sedimentation is relatively low, but for the characteristics of high total cyanide content in industrial park wastewater, conventional coagulants cannot achieve the effect of total cyanide removal
Although activated carbon adsorption has a good treatment effect on residual organic matter in wastewater, due to the non-selective adsorption of activated carbon on pollutants and difficult regeneration, the cost of activated carbon adsorption treatment is very high, and it cannot be used in large-scale industrial park wastewater systems. In use, the chemical oxidation process mainly includes chlorine oxidation, hypochlorous acid oxidation, chlorine dioxide oxidation, ozone oxidation and Fenton oxidation process. When there is no catalyst, the oxidation of chlorine oxidation, hypochlorous acid oxidation, chlorine dioxide oxidation and ozone oxidation process The efficiency is very low, and the COD removal effect is poor, which limits the practical application. Although the Fenton oxidation process has small investment and good treatment effect, it has obvious shortcomings such as high labor intensity, high treatment cost, unstable effect, and large sludge output. It has not been widely used in practical engineering

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  • Method for simultaneously removing insoluble organic matter, total cyanogen and total nitrogen in wastewater of industrial park

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Effect test

specific Embodiment 1

[0055] The raw waste water mainly contains cyanide, ammonia nitrogen, SS and organic matter. After being treated in the original factory area, the main pollutant indicators are COD≤80mg / L, ammonia nitrogen≤35 mg / L, total nitrogen≤50 mg / L, and total cyanide≤0.5 mg / L L. Wastewater passes through high-efficiency coagulation decyanation reactor, biological aerated filter, denitrification filter, V-shaped filter and ozone catalytic oxidation tank in sequence. Through a high-efficiency coagulation decyanation reactor, the total cyanide and part of SS are removed under the action of a high-efficiency coagulation decyanation agent; the biological aerated filter and denitrification filter use ceramsite with a particle size of 3~5mm The filter material, through the nitrification and denitrification of aerated biological filtration and denitrification filter, removes ammonia nitrogen and total nitrogen in wastewater; further removes SS in wastewater through a V-shaped filter, which plays...

specific Embodiment 2

[0058] The raw waste water mainly contains cyanide, ammonia nitrogen, SS and organic matter. After being treated in the original factory area, the main pollutant indicators are COD≤100mg / L, ammonia nitrogen≤35 mg / L, total nitrogen≤50 mg / L, and total cyanide≤1 mg / L L. Wastewater passes through high-efficiency coagulation decyanation reactor, biological aerated filter, denitrification filter, V-shaped filter and ozone catalytic oxidation tank in sequence. Through a high-efficiency coagulation decyanation reactor, the total cyanide and part of SS are removed under the action of a high-efficiency coagulation decyanation agent; the biological aerated filter and denitrification filter use ceramsite with a particle size of 3~5mm The filter material, through the nitrification and denitrification of aerated biological filtration and denitrification filter, removes ammonia nitrogen and total nitrogen in wastewater; further removes SS in wastewater through a V-shaped filter, which plays ...

specific Embodiment 3

[0061] The raw waste water mainly contains cyanide, ammonia nitrogen, SS and organic matter. After being treated in the original factory area, the main pollutant indicators are COD≤80mg / L, ammonia nitrogen≤35 mg / L, total nitrogen≤50 mg / L, and total cyanide≤0.5 mg / L L. Wastewater passes through high-efficiency coagulation decyanation reactor, biological aerated filter, denitrification filter, V-shaped filter and ozone catalytic oxidation tank in sequence. Through a high-efficiency coagulation decyanation reactor, the total cyanide and part of SS are removed under the action of a high-efficiency coagulation decyanation agent; the biological aerated filter and denitrification filter use ceramsite with a particle size of 3~5mm The filter material, through the nitrification and denitrification of aerated biological filtration and denitrification filter, removes ammonia nitrogen and total nitrogen in wastewater; further removes SS in wastewater through a V-shaped filter, which plays...

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Abstract

The invention relates to a method for simultaneously removing insoluble organic matter, total cyanogen and total nitrogen in wastewater of an industrial park. The method comprises the following steps: wastewater enters a high-efficiency coagulated decyanation reactor to remove total cyanogen in the wastewater removed from the coagulated decyanation reaction; effluent from the coagulating reaction enters an aeration biofilter, ammonia and nitrogen in the wastewater is oxidized into nitrate nitrogen or nitrite nitrogen, and partial organic matters are oxidized and removed; effluent from the aeration biofilter flows into a denitrification filter tank, and nitrate nitrogen and nitrite nitrogen in the wastewater are denitrified into nitrogen and removed; effluent from the denitrification filter tank is filtered in a V-shaped filter tank and then enters an ozone catalytic oxidation tank, and insoluble organic matters are oxidized into small-molecular organic matters or mineralized in the presence of a catalyst. The method can be used for oxidizing and degrading organic matters while removing total cyanogen and total nitrogen in the wastewater to ensure that treated effluent can be emitted in standard, thus having an excellent market prospect.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a method for simultaneously removing refractory organic matter, total cyanide and total nitrogen in industrial park wastewater. Background technique [0002] With the development of urban construction and economic construction, industrial projects are gradually concentrated in industrial parks. The development of industrial parks in my country has experienced three processes: economic and technological development zones-high-tech industrial development zones-ecological industrial parks. Industrial parks are important for the development of the national economy. Carriers and boosters have gradually become one of the main modes of my country's industrial development. [0003] The industrial park wastewater mainly comes from the sewage and waste liquid produced by the factories in the park during the production process, except for COD, SS, NH 4 + In addition to conven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/18C02F101/30
CPCC02F1/001C02F1/52C02F1/56C02F1/725C02F1/78C02F3/06C02F3/28C02F9/00C02F2101/16C02F2101/18C02F2101/30C02F2209/16
Inventor 李海波杨志超霍珊李琴芝王天慧
Owner BEIJING CYCLE COLUMBUS ENVIRONMENTAL TECH RES INST CO LTD
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