Green environment-friendly sludge building material

Abstract

The invention discloses a green environment-friendly sludge building material which is characterized by comprising the following components in parts by weight: 40-45 parts of sludge, 35-45 parts of cement, 5-15 parts of alabaster, 12-19 parts of gravel, 1-2 parts of high-temperature-resistant adhesive, 3-8 parts of filler, 3-7 parts of potassium hydroxide, 1-8 parts of calcium hydroxide, 1-3 parts of hydroxyethyl cellulose, 5-9 parts of POE, 1-6 parts of nano organic montmorillonite, 2-3 parts of talcum powder, 5-8 parts of zinc stearate, 1-7 parts of calcium stearate, 20-30 parts of shale, 10-15 parts of lignite and 20-35 parts of gypsum. The sludge water content in the building material is up to 70% above; the building material contains rich organic matters and other volatile matters by combustion; and the capacity reduction ratio of the fired municipal sludge is very high, so residues can be stably fixed in the prepared brick without adding other chemical additives.

Description

Technical field [0001] The invention relates to a green environmental protection sludge building material. Background technique [0002] After municipal sewage is treated with clean sludge treatment, excess sludge will be produced. In addition to organic matter, nitrogen, phosphorus, and feed, this sludge generally also includes a variety of heavy metals, and these heavy metals also The concentration of many species exceeds the agricultural standards, which are toxic and harmful substances and cannot be placed in agricultural planting, nor placed in places that can affect the health of humans and animals. At present, there are many treatment methods for urban sludge, generally including landfill, incineration and comprehensive utilization. Although the landfill method has low disposal costs, the sludge composition is unstable, and the toxic and harmful substances and pathogenic microorganisms in it will pollute the land and water resources. The use of sludge to prepare building...

AI Technical Summary

Problems solved by technology

Although the landfill method has low treatment costs, due to the unstable composition of the sludge, the toxic and harmful substances and pathogenic microorganisms in it will pollute the land and water resources