Downward-flow zero-valent-iron-fenton-like and biological-filter integrating wastewater treatment technology and device
A biological filter, wastewater treatment technology, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of reducing and reducing engineering investment and saving first-level process links and structures
Inactive Publication Date: 2016-03-23
DONGHUA UNIV
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Problems solved by technology
[0004] What the present invention aims to solve is the problem that the existing industrial wastewater advanced treatment combined process using Fenton oxidation and biological aerated filter has many links and long process flow
Method used
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[0019] 1. Wastewater treatment equipment
[0020] Such as figure 1 As shown, a kind of downflow zero-valent iron Fenton-biological filter integrated wastewater treatment equipment provided by the present invention includes a sulfuric acid dissolving pool 1 with a sulfuric acid dosing pump 3, a hydrogen peroxide dissolving pool with a hydrogen peroxide dosing pump 6 Medicine pond 4 and filter pond 25, sulfuric acid dissolving pond 1, and hydrogen peroxide dissolving pond 4 are respectively connected to waste water inlet pipe 9 through sulfuric acid dosing pipe 7 and hydrogen peroxide dosing pipe 8, and waste water inlet pipe 9 passes through mixer 10 and waste water inflow in turn. The regulating valve 23 is connected with the water inlet of the water inlet channel 13 at the top of the filter tank 25, and the backwash drainage pipe 12 is also connected with the water inlet of the water inlet channel 13 through the backwash drainage regulating valve 11; the filter tank 25 is fil...
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The invention discloses a downward-flow zero-valent-iron-fenton-like and biological-filter integrating industrial wastewater treatment technology and device. The wastewater treatment device comprises a dissolving sulfuric acid pond, a dissolving hydrogen peroxide pond and a filter. A wastewater inlet pipe is connected with a water inlet of a water inlet canal in the top of the filter. The filter is sequentially filled with an iron scrap filtering layer, a biological ceramisite filtering layer, a bearing layer and porous filtering bricks from top to bottom, and a water outlet pipe is arranged on the side wall of the filter. The wastewater treatment technology includes the steps that after acid is added into the filter, hydrogen peroxide is added; the primarily-treated wastewater enters the filter through the water inlet canal; the wastewater is subjected to a zero-valent-iron fenton-like reaction on the iron scrap filtering layer at the upper portion of the filter, the biodegradation process of organisms is completed on the biological ceramisite filtering layer at the lower portion of the filter, and water is drained through the water outlet pipe. According to the wastewater treatment technology and device, the zero-valent-iron fenton-like reaction and the biological filter are integrated, a part of the treatment technology can be omitted, and engineering investment and running cost can be effectively reduced.
Description
technical field [0001] The invention belongs to the field of industrial wastewater treatment, and in particular relates to a downward flow zero-valent iron Fenton-biological filter integrated wastewater treatment process and equipment. Background technique [0002] At present, the discharge standards of industrial wastewater are generally improved. Many industrial wastewaters such as printing and dyeing, chemical industry, and pharmaceutical industry cannot meet the new discharge standards only by secondary physicochemical and biochemical treatment. It is necessary to add tertiary advanced treatment on the basis of traditional secondary biochemical treatment. Fenton oxidation is a technology that has been applied in the field of refractory industrial wastewater treatment in recent years. Its technical advantage lies in the 2+ Under acidic conditions, hydrogen peroxide is catalyzed to generate highly oxidizing hydroxyl radicals, thereby degrading organic matter in wastewater....
Claims
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Login to View More IPC IPC(8): C02F9/14
CPCC02F1/722C02F3/02
Inventor 薛罡李响张文启高品张凡张文娟王成薛顺利韩闯魏欣孟迪顾超超辛海霞陈畅愉成钰莹来思周甘雁飞徐小强杨帆程茜程文艳张婷
Owner DONGHUA UNIV