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Foaming-type industrial waste residue base compound dephosphorization material

An industrial waste residue, foaming technology, applied in water/sludge/sewage treatment, adsorbed water/sewage treatment, other chemical processes, etc., to reduce recovery costs, strengthen adsorption and reaction capabilities, and reduce water eutrophication. Effect

Inactive Publication Date: 2010-01-13
SOUTHEAST UNIV
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Problems solved by technology

[0005] At present, using industrial waste, adding a suitable amount of foaming agent and additives such as binders, compounding high-efficiency phosphorus removal materials suitable for sewage treatment processes, and realizing the recycling of phosphorus resources has not been reported in China.

Method used

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Embodiment Construction

[0031] The foamed industrial waste slag-based composite dephosphorization material of the present invention is composed of fly ash, steel slag, and a binder to form a gelling material, and then a foaming agent and water are added to form a composite dephosphorization material.

[0032] Composite dephosphorization material components:

[0033] Fly ash: 75%-85% accounted for the mass ratio of cementitious materials

[0034] 70-90 mesh steel slag: 10%-20% accounted for the mass ratio of cementitious material

[0035] Binder: 3%-15% accounted for the mass ratio of cementitious material

[0036] Foaming agent: 2‰-10‰ mass ratio to gelling material

[0037] Water: 3:1-9:2 mass ratio to gelling material.

[0038] The binder is cement or gypsum.

[0039] The composite dephosphorization material is formed by cold curing or thermal sintering.

[0040] The groups of optimum values ​​are:

[0041] Fly ash: 80.0% accounted for the mass ratio of cementitious materials

[0042] Steel ...

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Abstract

The invention relates to a foaming-type industrial waste residue base compound dephosphorization material. Coal ash, steel slag and adhesive form gelation materials, foaming agent and water are added to form a compound dephosphorization material. The compound dephosphorization material comprises the following components by mass ratio of gelation materials: 75-85 percent of coal ash, 10-20 percent of 70-90 meshes of steel slag, 3-15 percent of adhesive, 0.2-1 percent of foaming agent and 3:1-9:2 of water. The material can protect the environment, realize reclamation of wastes and achieve good social and economic benefits.

Description

technical field [0001] The invention relates to a foaming high-efficiency composite dephosphorization material used in sewage (waste) water treatment, belonging 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 c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02C02F1/28C02F1/58
Inventor 王世和刘焱周军朱丹张维卓运红
Owner SOUTHEAST UNIV
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