Efficient heavy metal sludge treating agent

Abstract

The invention discloses an efficient heavy metal sludge treating agent. The efficient heavy metal sludge treating agent is prepared from, by weight, 5-12 parts of glutamine, 25-35 parts of sodium bentonite, 5-10 parts of methylparaben, 10-20 parts of activated carbon, 5-8 parts of polydiallyldimethylammonium chloride, 2-8 parts of p-chloromethyl benzoic acid, 2-6 parts of 2-aminopyridine-4-methanol, 5-12 parts of biogas residues, 5-10 parts of waste culture media for edible fungi, 2-4 parts of degrading bacteria, 10-20 parts of bentonite and 0.2-0.4 part of ferrous sulfate. Physical and chemical indicators of soil heavily contaminated by heavy metals can reach the GB15618-2008 standard; the treatment technology is simple, the dosage is small, the treatment effect is good, the performance is stable, the contaminated soil recovery degree is high, the cost of the treating agent can be effectively lowered, and the treating agent has good economic benefits and extensive social benefits.

Description

technical field [0001] The invention relates to the technical field of sludge, in particular to a high-efficiency heavy metal sludge treatment agent. Background technique [0002] With the acceleration of urbanization and the improvement of living standards, the public is paying more and more attention to environmental issues, and the requirements for environmental quality are also increasing. In order to prevent water pollution and improve the ecological environment, my country's urban sewage treatment rate has increased rapidly. In 2000, my country's urban domestic sewage discharge reached 22.1 billion tons. At present, there are more than 400 urban sewage treatment plants that have been built and operated in the country, with a daily treatment capacity of 25.34 million tons. In urban sewage treatment, urban sludge, which accounts for 0.02% of the volume of sewage, is generally produced. With the continuous construction of sewage treatment plants, the generation of muni...

AI Technical Summary

Problems solved by technology

Therefore, its heavy metal problem has always been a concern about the environmental risk of urban sludge agricultural use, and has become an obstacle limiting its large-scale land use.