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Continuous sand filtration-ozone catalytic oxidation combined wastewater treatment equipment and application method thereof

A technology for ozone catalytic oxidation and wastewater treatment, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as difficult to meet, improve effluent water quality, singleness, etc., to achieve Reduce volume and floor space, reduce operating costs, and feature obvious effects

Inactive Publication Date: 2015-08-05
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technology to be solved by the present invention is to provide a continuous sand filter for the current situation that it is difficult to further improve the water quality of the industrial secondary effluent containing low-concentration refractory organic matter through a single treatment technology, and it is difficult to meet the increasingly stringent drainage standards. -Ozone catalytic oxidation combined wastewater treatment device and its use method, the device of the present invention has a compact structure, reasonable composition, and can economically and efficiently complete the advanced treatment of industrial wastewater

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  • Continuous sand filtration-ozone catalytic oxidation combined wastewater treatment equipment and application method thereof

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Embodiment 1

[0028] A continuous sand filter-ozone catalytic oxidation combined wastewater treatment device, comprising a pipeline mixing unit 1, a microflocculation reaction unit 2, a continuous sand filter unit 3, an ejector ozone mixing unit 4 and an ozone catalytic oxidation unit 5 connected in sequence through pipelines; The micro-flocculation reaction unit 2 is filled with a coagulant, the continuous sand filter unit 3 is filled with sand filter packing, and the ozone catalytic oxidation unit 5 is filled with a catalyst.

[0029] The above schemes can already complete the advanced treatment of wastewater, and the optimal scheme is given below on this basis:

[0030] The coagulant is PAC; the sand filter filler is quartz sand; the catalyst is loaded Al 2 o 3The solid catalyst filler has a filling ratio of 30% to 50%; the diameter of the quartz sand is 0.5 to 1.0mm.

Embodiment 2

[0032] A wastewater treatment method, comprising the following steps: the wastewater enters the pipeline mixing unit 1 and is fully mixed and then enters the micro-flocculation reaction unit 2 for micro-flocculation reaction, and then injects air and micro-flocculated wastewater into the The continuous sand filtration unit 3 performs continuous sand filtration, and the wastewater after the continuous sand filtration is fully mixed with ozone through the jet ozone mixing unit 4 and then injected into the ozone catalytic oxidation unit 5 for ozone catalytic oxidation.

[0033] The above schemes can already complete the advanced treatment of wastewater, and the optimal scheme is given below on this basis:

[0034] The micro-flocculation reaction adopts mechanical stirring, and the G value is 50-100s -1 , the flocculation hydraulic retention time is 2~7min; the filtration rate of the continuous sand filter is maintained at 6~10m / h, and the gas-water ratio is 8:1~10:1; the hydrauli...

Embodiment 3

[0036] A continuous sand filtration-ozone catalytic oxidation combined wastewater treatment method, the method is carried out using a continuous sand filtration-ozone catalytic oxidation combined device, and the device is as follows figure 1 As shown, it includes a pipeline mixing unit 1 , a microflocculation reaction unit 2 , a continuous sand filter unit 3 , an ejector ozone mixing unit 4 and an ozone catalytic oxidation unit 5 connected in sequence. The wastewater to be treated is the biochemical secondary effluent of industrial wastewater. The method includes the following steps: the industrial wastewater is first mixed with PAC and then enters the pipeline mixing unit. The waste water enters the reaction pool, the reaction pool is equipped with mechanical stirring, and the G value is 50s -1 Around, the residence time is 2-7 minutes, the effluent from the reaction tank enters the continuous sand filter, the filtration rate is maintained at 6-10m / h, the gas-water ratio is b...

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Abstract

The invention discloses continuous sand filtration-ozone catalytic oxidation combined wastewater treatment equipment which comprises a pipeline mixing unit (1), a micro-flocculation reaction unit (2), a continuous sand filtration unit (3), an ejector ozone mixing unit (4) and an ozone catalytic oxidation unit (5) which are successively connected through pipelines. The micro-flocculation reaction unit (2) is filled with a coagulant. The continuous sand filtration unit (3) is filled with a sand filtration filler. The ozone catalytic oxidation unit (5) is filled with a catalyst. The invention also discloses a wastewater treatment method. The continuous sand filtration-ozone catalytic oxidation combined wastewater treatment equipment has advantages of compact structure, reasonable composition, low cost and good wastewater treatment effect.

Description

technical field [0001] The invention relates to an industrial waste water treatment device and its use method, in particular to a continuous sand filtration-ozone catalytic oxidation combined waste water treatment device and its use method. Background technique [0002] Due to the need to control the total amount of environmental pollutants and restore the ecological functions of water bodies, my country's current sewage treatment plant effluent discharge standards are gradually increasing. For example, local standards in Liaoning, Jiangsu, Tianjin and Beijing are stricter than national standards. At present, various industrial industries in my country tend to gather together. There are thousands of industrial parks of different sizes. Industrial parks usually adopt the unified treatment mode of centralized sewage treatment plants. However, due to the large changes in the quality and quantity of industrial wastewater, the degree of pretreatment of each discharge unit varies. ...

Claims

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Application Information

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IPC IPC(8): C02F9/04
Inventor 吴昌永周岳溪朱晨
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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