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Sewage treating agent containing manganese-containing compound

A technology of sewage treatment agent and manganese compound, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, granular microbial carrier treatment, etc. problems such as sludge loss, to achieve the effect of maintaining a strong position, preventing and curbing sludge bulking, and improving efficiency

Inactive Publication Date: 2018-03-23
唐毅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once sludge bulking occurs, its harm is extremely serious, not only causing sludge loss and effluent suspended solids (SS) to seriously exceed the standard, but also greatly reducing the processing capacity of the sewage treatment system, and it will take a long time to restore the system to normal

Method used

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  • Sewage treating agent containing manganese-containing compound
  • Sewage treating agent containing manganese-containing compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) To TiO with a mass concentration of 20% 2 Sodium hexametaphosphate is added to the solution, and the amount of sodium hexametaphosphate added is TiO 2 0.1% by weight, aluminum sulfate to adjust the pH value to 9 for pre-dispersion, at 40 ° C, add TiO 2 0.1% Al2O3, adjust the pH of the solution to 8.5 with aluminum sulfate, and age for 2h; 2 0.1% by weight, stir well, add TiO 2 AL2O3 with a mass of 0.01%, aged for 2 hours, filtered, and baked at 105°C for 12 hours to obtain a titanium dioxide multilayer coating.

[0018] 2) Mix and pulverize 10kg of manganese dioxide, 2kg of medical stone, and 4kg of titanium dioxide multilayer coating to obtain final product.

Embodiment 2

[0020] 1) To TiO with a mass concentration of 30% 2 Sodium hexametaphosphate is added to the solution, and the amount of sodium hexametaphosphate added is TiO 2 0.2% by weight, aluminum sulfate to adjust the pH value to 10 for pre-dispersion, at 50 ° C, add TiO 2 0.3% Al2O3, adjust the pH of the solution to 9.5 with aluminum sulfate, and age for 3h; 2 0.2% by weight, stir well, add TiO 2 AL2O3 with a mass of 0.03%, aged for 3 hours, filtered, and baked at 120°C for 24 hours to obtain a titanium dioxide multilayer coating.

[0021] 2) Mix and pulverize 15kg of manganese dioxide, 3kg of medical stone, and 7kg of titanium dioxide multilayer coating to obtain final product.

Embodiment 3

[0023] 1) To TiO with a mass concentration of 25% 2 Sodium hexametaphosphate is added to the solution, and the amount of sodium hexametaphosphate added is TiO 2 0.15% by weight, aluminum sulfate to adjust the pH value to 9.5 for pre-dispersion, at 45 ° C, add TiO 2 0.2% Al2O3 by mass, adjust the pH of the solution to 9 with aluminum sulfate, and age for 2.5h; 2 0.15% by weight, stir well, add TiO 2 AL2O3 with a mass of 0.02%, aged for 2.5 hours, filtered, and baked at 115°C for 18 hours to obtain a titanium dioxide multilayer coating.

[0024] 2) Mix and pulverize 13kg of manganese dioxide, 2.5kg of medical stone, and 6kg of titanium dioxide multilayer coating to obtain final product.

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Abstract

The invention provides a sewage treating agent containing a manganese-containing compound. The sewage treating agent containing the manganese-containing compound consists of the following raw materials in parts by weight: 10-15 parts of manganese dioxide, 2-3 parts of medical stone and 4-7 parts of a titanium dioxide multilayer coating. A preparation method of the titanium dioxide multilayer coating comprises the following steps: adding a dispersing agent in a TiO2 solution, regulating pH value to be 9-10 and per-dispersing, adding Al2O3 of which the mass accounts for 0.1-0.3% of that of TiO2at the temperature of 40-50 DEG C, regulating pH of a solution to be 8.5-9.5 by using aluminum sulfate, and ageing for 2-3 hours; and then adding the dispersing agent again under the condition of heatinsulation, stirring evenly, adding Al2O3 of which the mass accounts for 0.01-0.03% of TiO2, ageing for 2-3 hours, filtering, and drying to obtain the final product. By the additive, the sewage treatment efficiency can be improved, and therefore, sludge expansion can be effectively prevented and suppressed.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment agent containing manganese-containing compounds. Background technique [0002] Urban domestic sewage generally adopts activated sludge treatment process, such as A / O process is one of the commonly used ones. It is well known that the occurrence rate of sludge bulking in activated sludge treatment process is extremely high, even in developed countries in Europe and America. As high as 50 to 60%, the incidence rate of domestic sewage treatment plants in cities at all levels in my country is even higher. Once sludge bulking occurs, its harm is extremely serious, not only causing sludge loss and effluent suspended solids (SS) to seriously exceed the standard, but also greatly reducing the processing capacity of the sewage treatment system, and it will take a long time to restore the system to normal. For the sewage treatment system using the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/34
CPCC02F3/00C02F3/341C02F2003/001
Inventor 唐毅
Owner 唐毅