Soil conditioner capable of treating heavy metals and preparation method of soil conditioner

Abstract

The invention discloses a soil conditioner capable of treating heavy metals. The soil conditioner is prepared from the following raw materials in parts by weight: 38-44 parts of organic fertilizer, 12-16 parts of modified biochar, 8-16 parts of a heavy metal treating agent, 14-18 parts of wood vinegar, 6-10 parts of sodium persulfate, 4-8 parts of coke, 4-8 parts of polyacrylamide, 3-5 parts of plant carbon black and 16-22 parts of desulfurized gypsum. The soil conditioner capable of treating heavy metals can provide rich organic matter, has good effect of treating heavy metal ions, and has higher use value and good application prospect.

Description

technical field [0001] The invention relates to the technical field of soil conditioners, in particular to a soil conditioner capable of treating heavy metals and a preparation method thereof. Background technique [0002] There are many types of soil improvers: minerals, mainly peat, lignite, weathered coal, lime, gypsum, vermiculite, bentonite, zeolite, perlite and sepiolite, etc.; natural and semi-synthetic water-soluble polymers, mainly Straw, polysaccharide materials, cellulose materials, lignin materials and resin glue materials; synthetic polymer compounds, mainly polyacrylic acid, vinyl acetate maleic acid and polyvinyl alcohol; beneficial microbial preparations, etc. In recent years, with the continuous and rapid development of my country's urbanization process, the number of urban population has continued to increase, and at the same time the output of heavy industrial sludge has continued to increase. Therefore, it is urgent to develop a soil conditioner that can de...

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Problems solved by technology

[0002] There are many types of soil improvers: minerals, mainly peat, lignite, weathered coal, lime, gypsum, vermiculite, bentonite, zeolite, perlite and sepiolite, etc.; natural and semi-synthetic water-soluble polymers, mainly Straw, polysaccharide materials, cellulose materials, lignin materials and resin glue materials; synthetic polymer compounds, mainly polyacrylic acid, vinyl acetate maleic acid and polyvinyl alcohol; beneficial microbial preparations, etc. In recent years, with the continuous and rapid development of my country's urbanization process, the number of urban population has continued to increase, and at the same time the output of heavy industrial sludge has continued to increase. become smaller, the number is reduced, and the antibacterial, cold resistance, and drought resistance of crops are weakened. Therefore, it is urgent to develop a soil conditioner that can handle heavy metals in soil, improve soil quality, and improve crop quality.

[0003] Most of the existing soil improvers are for improving soil quality and lack the effect of treating heavy metal ions in soil. The Chinese patent document (publication number: CN105777424B) discloses an acidic soil improver made from iron ore tailings. The acidic soil improver contains The following components by weight ratio: iron ore tailings: 15-70 parts, organic fertilizer: 1-30 parts, coarse sand: 1-40 parts, stone materials: 1-20 parts, wherein the organic fertilizer includes straw and Feces, although the amendment can improve the acidic soil environment and provide nutrients, but the ability to deal with heavy metal ions is poor

[0004] Chinese patent document (publication number: CN106495945B) discloses a kind of method that utilizes municipal sludge to prepare soil conditioner rapidly, and this method is to comprise domestic sludge, rice straw, livestock manure, heavy metal passivation agent and microbial bacterial agent in The raw material components in the mixture are uniformly mixed to obtain a mixed material; the mixed material is subjected to high-temperature aerobic fermentation in a multi-layer vertical mixed fermentation tower to obtain a fermented material; after the fermented material is granulated, it is dried at a low temperature to obtain ; This method effectively realizes the stabilization, harmlessness, reduction and resourceful treatment of sludge, and can make sludge that can be used to improve soil quality and plant growth. Heavy metal ability, but the effect is still not good, still needs further improvement