Wastewater treatment integrated device and method for composite catalytic oxidation coupled biological filter

A composite catalytic oxidation coupling and biological filter technology, applied in the field of water treatment, can solve problems such as the inability to achieve ideal effects, and achieve the effects of improving catalytic oxidation efficiency and biological oxidation effect, improving effluent quality, and accelerating biological metabolic reactions.

Pending Publication Date: 2018-02-16
中节能工程技术研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, currently limited by equipment, this kind of "advanced oxidation + biochemical" combined process cannot achieve the desired effect

Method used

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  • Wastewater treatment integrated device and method for composite catalytic oxidation coupled biological filter

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A composite catalytic oxidation coupled biological filter integrated device for refractory wastewater, comprising: a gas-liquid mixer 4, a composite catalytic oxidation coupled biological filter device 10, an energy field generator 12, and an ozone generator 5;

[0043] The liquid outlet of the gas-liquid mixer 4 is connected to the water inlet 101 of the composite catalytic oxidation coupling biofilter device 10, and the water inlet valve 8 and the dissolved air water release device 9 are arranged on the connecting pipeline, and the composite catalytic oxidation coupling The biological filter device 10 comprises a composite catalytic oxidation device (COX) at the lower end and a biological filter device (BF) at the upper end;

[0044] The composite catalytic oxidation device (COX) is provided with a water inlet 101, a water outlet 102, a backwash water inlet 103, a liquid distributor 104, a gas distributor 105, a catalyst support layer 106, a catalyst discharge outlet 1...

Embodiment 2

[0051] The above composite catalytic oxidation coupled biological filter integrated device is used to treat the raw water of printing and dyeing wastewater, and the conditions are as follows: raw water COD Cr =1000mg / L, pH=8.3, SS=250mg / L, before entering the above-mentioned disposal device, go through coagulation, air flotation and quartz sand filtration pretreatment, the experimental conditions are as follows: add 1000mg / L polyaluminum chloride and 5mg / L polyacrylamide, the coagulation reaction is 5 minutes, the air flotation reaction is 20 minutes, and the residence time of the quartz sand filter is 5 minutes.

[0052] After pretreatment by coagulation, air flotation and quartz sand filtration, the water quality indicators are as follows: COD Cr =460mg / L, pH=6.8, SS=8mg / L, the waste water after the above pretreatment enters the composite catalytic oxidation coupled biological filter integration device, the conditions are as follows: the influent flow rate is 0.1m 3 / h, in...

Embodiment 3

[0055] The composite catalytic oxidation coupling biofilter integrated device of Example 1 is used to treat the biochemical effluent of landfill leachate, and the conditions are as follows: the influent flow rate is 0.2m 3 / h, COD Cr =490mg / L, pH=7.8, in the ozone / oxygen gas mixture entering the gas-liquid mixer, the mixed gas flow rate is 20L / h, the ozone concentration is 150mg / L, and the amount of hydrogen peroxide added is 0.2L / h (according to the mass content of 27.5 % hydrogen peroxide), the MCM-41 molecular sieve particles of the catalyst carrier, the average particle diameter is 2.5mm, the catalyst active component is titanium dioxide, and the mass percentage of titanium is 1%. The height of the catalyst filled layer is 2m, the residence time of the wastewater in the catalyst filled layer is 60min, and the output power of the energy field generating device is 120W (ultrasonic power 60W, microwave power 60W). The biological filler is biological ceramsite, the particle s...

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Abstract

The invention relates to a wastewater treatment integrated device and a method thereof for a composite catalytic oxidation coupled biological filter. The wastewater treatment integrated device includes a gas-liquid mixer, a composite catalytic oxidation coupled biological filter device, an energy field generating device and an ozone generator. The waste water treatment integrated device effectively improves ozone utilization efficiency, oxygen utilization efficiency, pollutant degradation efficiency, system impact resistance and effluent water quality, and reduces investment and treatment costs.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a compound catalytic oxidation coupled biological filter treatment method and treatment device for refractory wastewater. Background technique [0002] With the rapid development of modern industry, especially coal chemical industry, petrochemical industry, fine chemical industry, textile printing and dyeing, pharmaceutical pesticide, pulp and paper making and other industries, various refractory organic wastewaters are increasing, and these wastewaters generally have high pollutant concentration, toxicity It is characterized by large size and poor biodegradability, which seriously pollutes the water environment and endangers human health. After this type of industrial wastewater undergoes conventional physical, chemical and biochemical secondary treatment, the wastewater still contains a large amount of toxic and biodegradable organic pollutants, and further advanced t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/725C02F1/001C02F1/24C02F1/302C02F1/36C02F1/5236C02F1/56C02F1/722C02F1/727C02F1/78C02F3/02C02F3/34C02F9/00C02F2301/08
Inventor 李海涛刘杰徐伟邹结富
Owner 中节能工程技术研究院有限公司
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