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Sewage treatment unit and sewage treatment system

A sewage treatment system and sewage treatment technology, applied in water/sewage treatment, water/sewage multi-stage treatment, oxidized water/sewage treatment, etc. problems, to achieve the effect of reducing floor space, simple structure, and improving space utilization

Pending Publication Date: 2021-06-18
金风环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the application of ozone catalytic oxidation technology in engineering projects is mostly in the form of ozone catalytic oxidation towers and ozone catalytic oxidation pools. Due to defects such as large footprint and low on-site assembly efficiency, the manufacturing cost of existing ozone catalytic oxidation systems is high. no less

Method used

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  • Sewage treatment unit and sewage treatment system
  • Sewage treatment unit and sewage treatment system
  • Sewage treatment unit and sewage treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The foam metal sheet in the sewage treatment unit is made of nickel foam, and the aperture of the foam metal sheet is 0.5mm, the thickness is 20mm, the number of winding layers on the water inlet pipe 20 is 10 layers, and the material of the shell and the central pipe is PVC. Three sewage treatment units 1 are used in parallel, and the residence time is 1h.

[0067] The source of wastewater in this example is the reverse osmosis concentrated water of a petrochemical project, the influent chemical oxygen demand (COD) is 187mg / L, the chromaticity is 180 times, the turbidity is 0.50NTU, and the treated effluent COD is 22mg / L, the chromaticity is 4 times, the turbidity is 0.25NTU, the COD removal rate is 88.2%, the chromaticity removal rate is 97.8%, and the turbidity removal rate is 50%.

Embodiment 2

[0069] The foam metal sheet in the sewage treatment unit is made of foam metal iron, and the foam metal sheet has a pore size of 0.2mm and a thickness of 30mm. It is soaked in 0.02mol / L dilute nitric acid for 8 hours, and washed with water until neutral. Dry in an oven at 90°C for later use. Roast in a muffle furnace at 200°C for 2 hours for later use. Wrap 15 layers of foamed metal sheets on the water inlet pipe 20. The shell 10 and water inlet pipe 20 are made of 316L stainless steel. Three sewage treatment units are used in parallel with a residence time of 1 hour.

[0070] The source of wastewater in this example is a certain printing and dyeing wastewater, the influent chemical oxygen demand (COD) is 215mg / L, the chromaticity is 400 times, and the turbidity is 0.55NTU. The treated effluent COD is 21mg / L, and the chromaticity 4 times, the turbidity is 0.20NTU, the COD removal rate is 90.2%, the chroma removal rate is 99.0%, and the turbidity removal rate is 63.6%.

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Abstract

The invention provides a sewage treatment unit and a sewage treatment system. The sewage treatment unit comprises a shell, a water inlet pipe and a reaction bed. A sewage treatment chamber is formed in the shell. The water inlet pipe is arranged in the sewage treatment cavity and divides the sewage treatment cavity into a water inlet area located in the water inlet pipe and a purification area located on the outer side of the water inlet pipe, and permeation holes are formed in the peripheral wall of the water inlet pipe. The purification area is filled with the reaction bed, the reaction bed is formed by curling and winding a foam metal sheet on the peripheral wall of the water inlet pipe, and a purified water outlet is formed in the side wall of the shell and is positioned at the upper part of the purification area. A foam metal sheet reinforced foam grid cuts a steam-water mixture, so that the steam-water mixture can be in full contact with foam metal or foam oxide, the mass transfer efficiency of gas, liquid and solid phases can be greatly improved, the catalytic ozonation effect is improved, and meanwhile, the problems of catalyst abrasion, active component loss and the like caused by friction of granular catalysts are also avoided.

Description

technical field [0001] The disclosure belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment unit and a sewage treatment system. Background technique [0002] With the rapid development of my country's national economy, high-concentration organic wastewater poses a threat to my country's precious water resources. Refractory organic matter in wastewater is one of the key factors restricting the discharge of wastewater. [0003] As a simple, efficient and practical chemical process, advanced oxidation technology can degrade refractory organic pollutants in wastewater. Ozone catalytic oxidation technology is one of many advanced oxidation technologies, which is widely recognized by the society because of its safety and no secondary pollution. [0004] At present, the application of ozone catalytic oxidation technology in engineering projects is mostly in the form of ozone catalytic oxidation towers and ozone catalytic oxidation poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/30
CPCC02F1/78C02F1/725C02F2101/30C02F2201/007C02F2201/782C02F2209/08
Inventor 耿翠玉
Owner 金风环保有限公司