Sewage adsorbing and filtering particle prepared from slag and preparation method of sewage adsorbing and filtering particle

Abstract

The invention discloses sewage adsorbing and filtering particles prepared from slag and a preparation method of the sewage adsorbing and filtering particles, and belongs to the field of sewage treatment. The sewage adsorbing and filtering particles prepared from the slag are prepared from, by weight, 50-200 parts of the slag, 20-100 parts of activated carbon, 2-10 parts of talcum powder, 10-50 parts of clay, 10-50 parts of ferrous sulfide, 2-10 parts of aluminum oxide and 1-100 parts of water; the sewage adsorbing and filtering particles are prepared from the slag, a new way is provided for high-value utilization of the slag, and meanwhile, the prepared sewage adsorbing and filtering particles not only can adsorb suspended solids with large particle sizes, but also have the effect of decolorizing sewage, can be widely applied to the field of sewage treatment, solves the problem of comprehensive utilization of the slag, is environment-friendly and economic, and has wide application and development prospects.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a sewage adsorption filter particle prepared from slag, a preparation method thereof, and an application range thereof. Background technique [0002] The full name of slag is "granulated blast furnace slag". It is the waste residue produced when iron and steel plants smelt pig iron. In the blast furnace ironmaking process, in addition to iron ore and fuel (coke), in order to reduce the smelting temperature, an appropriate amount of limestone and dolomite should be added as flux. Calcium oxide, magnesium oxide, waste ore in iron ore, and ash in coke obtained by decomposing them in the blast furnace are melted to form a melt with silicate and aluminosilicate as the main components. On the surface of molten iron, it is regularly discharged from the slag discharge port, and is quenched by air or water to form granular particles, which are granulated blast furnace slag, o...

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Problems solved by technology

However, in the prior art, ceramsite is generally prepared by a sintering method and an unfired method, and the preparation of ceramsite by the sintering method has become the most mature process at present, but the process for preparing ceramsite is relatively complicated and the cost is high; and the unfired method Although high-temperature sintering treatment is avoided, it has relatively high requirements for raw materials, and it is not easy to form high-strength, low-density lightweight ceramsite