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Doping modified photocatalytic suspended stair biofilm reactor

A biofilm reactor and photocatalytic reaction technology, applied in chemical instruments and methods, special compound water treatment, biological water/sewage treatment, etc., can solve the problems of long process flow, low catalytic effect and high cost, and achieve improved treatment The effect of efficiency

Inactive Publication Date: 2018-12-28
常州蓝森环保设备有限公司
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Problems solved by technology

[0006] The technical problem mainly solved by the present invention: Aiming at the existing photocatalysis-biological combination method that can remove organic matter in slightly polluted water, but has the problems of long process flow, low catalytic effect and high cost, a doping improved Photocatalytic suspended cascade biofilm reactor

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  • Doping modified photocatalytic suspended stair biofilm reactor

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Embodiment Construction

[0023] A doped modified photocatalytic suspension cascade biofilm reactor, comprising a reactor main body 5, a water inlet pipe 3, an outlet pipe 4 and an air pipe 2 connected to the reactor main body 5, characterized in that: the reactor main body 5 is divided into two stages, the first stage is the biological reaction layer 7, the second stage is the photocatalytic reaction layer 10, and the ultraviolet lamp 8 is installed on the side wall of the photocatalytic reaction layer 10, the air pipe 2 is connected with the air pump 1, and the water inlet pipe 3 is connected to the high-level water tank 6, and the two-stage reaction layer of the reactor body 5 is filled with suspended composite fillers 9, and the bottom of the two-stage reactor has an aeration device 5 connected to the air pipe 2. The volume ratio of the biological reaction layer 7 and the photocatalytic reaction layer 10 is 1:2. The suspended composite filler 9 is a doped modified photocatalytic biofilm filler. Th...

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Abstract

The invention relates to a doping modified photocatalytic suspended stair biofilm reactor and belongs to the technical field of environment protection. By doping of heavy metal ions, band gap and average ionization energy of nano-TiO2 electron transition are reduced, so that nano-TiO2 absorbs optical energy more easily under the photocatalytic action to have electron transition for generating electron hole pairs, electron gaining capacity of the electron hole pairs is quite high, dissolved oxygen capture electrons adsorbed on surfaces of nano-TiO2 particles can form superoxide anions, hydroxide ions and water adsorbed on surface of suspended composite filler are oxidized into hydroxyl radicals, and most organic matter can be oxidized into final products CO2 and H2O by the superoxide anionsand the hydroxyl radicals. Advantages of a biofilm and photocatalytic treatment for micro-polluted water are combined, stair treatment is set, the technological process is shortened, the catalytic degradation effect is improved, the cost is reduced, and the reactor has broad application prospect.

Description

technical field [0001] The invention relates to a doped modified photocatalytic suspension cascade biofilm reactor, which belongs to the technical field of environmental protection. Background technique [0002] Slightly polluted water sources generally refer to the sewage generated in handicraft industry, agriculture and daily life without reasonable treatment, and are directly discharged into water supply sources. The polluted water sources mainly contain trace amounts of organic matter, ammonia nitrogen, pesticides and other harmful substances. Conventional water treatment methods It is difficult to dispose of them efficiently. [0003] With the development of my country's economy and the rapid process of industrialization, many rivers are polluted at different levels, and the seriously polluted rivers have lost their original self-repair ability. In the case of serious shortage of water resources in our country, slightly polluted raw water is still used as Harmful substa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F9/14C02F101/30
CPCC02F3/301C02F1/32C02F2101/30C02F2305/10
Inventor 胡莉林大伟
Owner 常州蓝森环保设备有限公司
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