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A series-parallel combination oily sewage purification system based on photocatalysis and electrolysis technology

A technology of sewage purification and photocatalysis, which is applied in special compound water treatment, light water/sewage treatment, water/sewage treatment, etc. It can solve the problems of incomplete purification, complex process, secondary pollution, etc.

Inactive Publication Date: 2020-10-23
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing oily sewage purification devices based on photocatalysis or electrolysis have many disadvantages, such as inconvenient mobile use, no closed shell, easy to cause secondary pollution caused by volatilization of organic matter in the water body, low purification efficiency, incomplete purification, complicated process, etc.

Method used

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  • A series-parallel combination oily sewage purification system based on photocatalysis and electrolysis technology
  • A series-parallel combination oily sewage purification system based on photocatalysis and electrolysis technology
  • A series-parallel combination oily sewage purification system based on photocatalysis and electrolysis technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] When the titanium dioxide nanobelt electrode material layer of the composite carbon nitride is prepared:

[0078] Weigh 25mg of titanium dioxide nanobelts and place them in an agate mortar to grind until there is no obvious graininess, add 40mg of PEG2000, 100ml of distilled water, and 400ml of absolute ethanol, fully grind until the slurry is viscous, and mix the prepared slurry evenly Spread the film on the photocatalytic plate, let the prepared film stand and dry for 12 hours, then place it in a muffle furnace, raise the temperature to 400°C at a rate of 2°C / min at room temperature, and calcinate at 400°C for 1h.

[0079] When preparing the titanium dioxide nanobelt:

[0080]Step 1. Put the anatase powder in an alkaline environment, raise the temperature to 160°C, and conduct a hydrothermal reaction for 40 hours. Take the suspension after the reaction and wash it with water by suction filtration, and then carry out pickling by suction filtration, and dry it after com...

Embodiment 2

[0086] When the titanium dioxide nanobelt electrode material layer of the composite carbon nitride is prepared:

[0087] Weigh 28 mg of titanium dioxide nanobelts and place them in an agate mortar to grind until there is no obvious graininess, add 50 mg of PEG2000, 110 ml of distilled water, and 450 ml of absolute ethanol, fully grind until the slurry is viscous, and mix the prepared slurry evenly Spread the film on the photocatalytic plate, let the prepared film stand and dry for 14 hours, then place it in a muffle furnace, raise the temperature to 500°C at a rate of 2°C / min at room temperature, and calcinate at 500°C for 2h.

[0088] When preparing the titanium dioxide nanobelt:

[0089] Step 1. Put the anatase powder in an alkaline environment, raise the temperature to 180°C, and conduct a hydrothermal reaction for 52 hours. Take the suspension after the reaction, wash it with water by suction filtration, and carry out pickling by suction filtration, and dry it after comple...

Embodiment 3

[0095] When the titanium dioxide nanobelt electrode material layer of the composite carbon nitride is prepared:

[0096] Weigh 30mg of titanium dioxide nanobelts and place them in an agate mortar to grind until there is no obvious graininess, add 60mg of PEG2000, 120ml of distilled water, and 500ml of absolute ethanol, fully grind until the slurry is viscous, and mix the prepared slurry evenly Spread the film on the photocatalytic plate, let the prepared film stand and dry for 16 hours, then place it in a muffle furnace, raise the temperature to 600°C at a rate of 2°C / min at room temperature, and calcinate at 600°C for 3h.

[0097] When preparing the titanium dioxide nanobelt:

[0098] Step 1. Put the anatase powder in an alkaline environment, raise the temperature to 200°C, and conduct a hydrothermal reaction for 56 hours. Take the suspension after the reaction, wash it with water by suction filtration, and carry out pickling by suction filtration, and dry it after completion...

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PUM

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Abstract

The invention relates to a series-parallel combination oily sewage purification system based on photocatalysis and electrolysis technology, including a water inlet, a water outlet, a sewage purification tank, a collection treatment tank, a fluid pipeline, a gas pipeline, a drainage pipeline, a heat exchanger, and a water tank. and power supply facilities. The sewage purification tank adopts a cylindrical shell with front and rear covers respectively, making it easy to install, disassemble and move. There are circular photocatalytic plates with porous structures inside, annular UV lamps, electrodes and other structures. The invention combines photocatalytic technology and electrolysis technology, which can effectively purify organic substances in sewage, and can inactivate microorganisms such as bacteria and viruses in sewage. It has good purification effect and high efficiency on oily sewage.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a series-parallel combined oily sewage purification system based on photocatalysis and electrolysis technology. Background technique [0002] With the development of industry, petroleum, petrochemical, steel, coking, gas generation stations, mechanical processing and other industrial sectors discharge a large amount of oily sewage, which endangers the ecological environment and has a negative impact on humans, animals, plants and even the entire ecosystem. The oily substances in the sewage will form an oil film on the water surface after being discharged into the water, which will reduce the dissolved oxygen content in the water, make the water body smelly, and affect the photosynthesis of algae and the growth of other aquatic organisms in the water. For organisms in the water body such as fish, the oil stains attached to the gills will cause the fish to suffocate and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/32C02F1/461B01J21/06B01J21/18B01J23/52
CPCC02F1/325C02F1/46104C02F1/46109B01J21/063B01J21/18B01J23/52C02F2301/08C02F2303/04C02F2305/10C02F2001/46142C02F2201/3227B01J35/58B01J35/40B01J35/39Y02W10/37
Inventor 于涛王一飞谭欣张智洋姜峰
Owner TIANJIN UNIV
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