Solidification and stabilization method for washing sludge of port engineering vehicle

Abstract

The invention relates to a solidification and stabilization method for washing sludge of a port engineering vehicle. The water content of the washing sludge is 88-93%. The method comprises the following steps: by using a mixture of furnace slag and silicate cement as a solidification and stabilization agent, adding the solidification and stabilization agent into the washing sludge, and uniformly stirring to obtain a solidified body capable of realizing direct landfilling or recycling, wherein the furnace slag is coal-fired furnace slag, fly ash or a combination thereof, and the solid content of the furnace slag is above 90%; and by taking the weight of the washing sludge as a reference, the adding amount of the furnace slag is 60-120%, and the adding amount of the silicate cement is 4-13%. According to the solidification and stabilization method provided by the invention, the coal-fired furnace slag is used for solidification and stabilization of sludge, thus effectively preventing the washing sludge from causing secondary pollution in the solidification treatment process, and realizing the recycling of the solid waste.

Description

technical field [0001] The invention relates to the technical field of environmental geotechnical engineering, and more specifically, the invention relates to a method for solidifying and stabilizing car wash sludge of port engineering vehicles. Background technique [0002] With the development of port construction in coastal cities, the use of car washing stations for port engineering vehicles and the disposal of sludge generated by car washing have become an urgent problem to be solved. The proportion of harmful components in car wash sludge is high, such as salt, organic pollutants, heavy metals, etc. At present, the hazards of sludge are still unknown, and they are often taken illegally, resulting in excessive accumulation of heavy metals in the land, land compaction, and human living environment. Food is inadvertently contaminated and spoiled. All countries in the world have carried out beneficial practices and explorations for the treatment and disposal of sludge. Th...

AI Technical Summary

Problems solved by technology

However, the disadvantages of the curing agent are that the curing agent has complex components, high curing cost, and long curing time, which is difficult to meet the needs of high daily sludge output and rapid landfill.

[0005] CN103319067A discloses a kind of environment-friendly sludge solidification method, which adopts the mixture obtained by mixing the aggregate and the solidifying agent uniformly as the solidification stabilizer, and its material is iron tailings slag, carbide slag and Portland cement, wherein the iron tailings slag The cost is high, and the amount of iron tailings slag and Portland cement is large, and there is a problem of high curing cost

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