Abstract: A method utilizing a humic acid substance for renovating and afforsesting slag is provided. A humic acid substance may be utilized for passivation, adsorption, reduction, chelation and immobilization of harmful heavy metal elements in slag, for example, Cr, As, Cd, Ni, Pb, Ba, Hg, Co, Se, Ag and Be, and aggregating the slag, thereby detoxifying the slag and producing artificial earth. The artificial earth may be used in combination with a carrier bacterial fertilizer to continuously produce the active humic acid substance, achieving an effect similar to the combination of blood transfusion and blood production, thereby forming a high-quality artificial soil.

Abstract: Providing a method for pyrolysis treatment of oily sludge and environment-friendly renovation of the residue thereof with humic acid substance. The method relates to inside-mixing solid heat carrier with oily sludge to improve the liquid yield, and completely removing the petroleum hydrocarbons from pyrolyzing residue by calcinating it in a fluidized bed, and using the fractionated large and medium particles as the circulating heat carrier, and discharging the fine particles, and performing environment-friendly renovation with the biological humic acid substance to achieve combinations of the harmless technical measures, thereby achieve harmlessness, reduced quantity and resourceful treatment of the oily sludge.

Abstract: A polygeneration method of biomass downflow circulation bed millisecond pyrolysis liquefaction-gasification coupling is provided.

Abstract: Providing a slag bacterial fertilizer and preparation method thereof and a method for improving the degraded soil; the preparation method of the slag bacterial fertilizer, comprising: adding humic acid substance during a process of pulverizing the gasification slag and/or ash residue, wherein the weight ratio of the added amount of humic acid substance relative to the total heavy metal amount in the gasification slag and/or ash residue is 3-40:1; then aging the pulverized product for more than 24 hours; loading 1 to 20 parts by weight of the microbial bacterial fertilizer on the detoxified gasification slag and/or ash residue with respect to 100 parts by weight of the gasification slag and/or ash residue. The prepared slag bacteria fertilizer is used in combination with the humic acid substance to renovate the degraded soil with rapid renovation and desirable effect.

Abstract: Providing a environment-friendly and in situ immobilized method of renovating heavy metal contaminated soil with humic acid substance, comprising: while the heavy metal contaminated soil being pulverized, adding humic acid substance into the soil according to weight ratio 5-20:1 of the humic acid substance to the total heavy metals contained in the soil, then aging the soil for more than 24 hours after the pulverization process; 2) adding 1-3 parts by weight of semi-coke bacterial fertilizer to 100 parts by weight of the water-stable granular structures, and mixing uniformly.

Abstract: Providing a method for improving saline-alkaline soil by using a biomass rapid pyrolysis product, comprising: rapidly pyrolyzing agricultural and forest residues to prepare bio-oil and semi-coke; deodorizing, dephenolizing and tackifying the bio-oil to prepare a modified bio-oil, and supplementing the modified bio-oil with the nutrient elements to produce a rapid ameliorant for saline-alkali soil; loading microbial fertilizer on the semi-coke to prepare a continuous renovation ameliorant for saline-alkali soil; (4) applying the ameliorants on the surface of saline-alkali soil.