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Industrial residue based compound dephosphorization material

A technology of industrial waste slag and steel slag, which is applied in the direction of adsorption of water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc., to achieve good social and economic benefits, protect the environment, and improve the regional ecological environment.

Inactive Publication Date: 2009-08-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the use of industrial waste to successfully compound high-efficiency phosphorus removal materials suitable for sewage treatment processes has not yet been reported in China to realize the recycling of phosphorus resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Components of the present invention are:

[0020] Fly ash (mass ratio): 75%-85%

[0021] Steel slag (70~90 mesh) (mass ratio): 10%-20%

[0022] Binder (mass ratio): 3%-15%;

[0023] The sum (mass ratio) of each component of the optimum value:

[0024] Fly ash (mass ratio): 82%

[0025] Steel slag (70~90 mesh) (mass ratio): 12%

[0026] Binder (mass ratio): 6%

[0027] Among them: the binder is cement, water glass, gypsum, quicklime powder, slag or clay,

[0028] A certain proportion of foaming agents can also be added to the above material components, such as vegetable cement foaming agents, concrete (cement) foaming agents, cement microfoaming agents, bagasse, soluble starch and the like.

[0029] The above materials are formed by cold curing or thermal sintering:

[0030] cold process

[0031] When the room temperature is higher than 5 degrees Celsius, the ball should be covered within 24 hours after forming, and sprinkled with water for maintenance after 6-8 ...

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Abstract

The industrial waste slag-based composite phosphorus removal material is a high-efficiency phosphorus removal material used for sewage (waste) water treatment, and belongs to the technical field of water pollution prevention and control. The material includes fly ash, steel slag, and binder. The mass ratio of the material to the total mass of the composite phosphorus removal material is: fly ash 75%-85%, steel slag 10%-20%, binder 3 %-15%, of which: the binder is cement, water glass, gypsum, quicklime powder, slag or clay. A foaming agent may also be added to the material components. The composite dephosphorization material is formed by cold curing or thermal sintering. The invention can not only protect the environment and realize the recycling of waste, but also obtain good social and economic benefits.

Description

technical field [0001] The invention relates to a high-efficiency phosphorus removal material used for sewage (waste) water treatment, and belongs to the technical field of water pollution prevention and control. Background technique [0002] Phosphorus is the main factor leading to eutrophication of water bodies. At the same time, phosphorus is also an indispensable nutrient element for life, and it is a resource that is difficult to regenerate and is increasingly exhausted. [0003] At present, the removal methods of phosphorus in sewage mainly include biological and chemical methods. The biological phosphorus removal process is complicated, and the effluent stability is poor; the chemical phosphorus removal is effective, but the phosphorus removal (pharmaceutical) materials used are mostly lime, aluminum salts, iron salts, ferrous salts, and magnesium salts. Due to the high cost of phosphorus removal agents and the large amount of sludge, this method has caused a bottle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/58C02F1/28
Inventor 王世和刘焱明劲松张怡吴玲琳
Owner SOUTHEAST UNIV