92results about How to "Ease acidification" patented technology

The invention belongs to the technical field of in-situ repair of heavy metal contaminated soil. Municipal sludge is used for preparing sludge-based charcoal through thermophilic thermolysis. The charcoal can be used as a repairing agent for the heavy metal contaminated soil. The sludge charcoal repairing agent comprises thickened sludge and palygorskite. A final black product namely the sludge-based charcoal is produced through the steps of performing biological and physical anhydration on sludge, then mixing the sludge after the biological and physical anhydration with the palygorskite, performing feeding into an atmosphere furnace, and then performing thermophilic thermolysis. The sludge charcoal is produced from the following components of 5-10% of the palygorskite and the balance of thethickened sludge. According to the sludge charcoal disclosed by the invention, the municipal sludge is subjected to decrement and harmless treatment, so that the municipal sludge can enter cycle of material and energy in natural environment again, and the difficult problem of treating and disposing the sludge is solved. The sludge charcoal is added to the heavy metal contaminated soil, so that heavy metal contaminated substances can be effectively solidified, the purposes of being durable and stable in repairing effect and being free from secondary pollution are realized, and the sludge charcoal is an ideal soil heavy metal contamination repairing agent with low cost.

The invention discloses a composite soil remediation agent made from compost and a preparation method. Vigorous implementation of soil remediation is a primary task for protecting soil ecological environments and solving land resource scarcity. The composite soil remediation agent made from the compost comprises, by weight, 60-70 parts of compost materials, 10-15 parts of straw biomass charcoal, 20 parts of coal ash, 2-5 parts of zeolite powder, 3-5 parts of calcium magnesium phosphate fertilizer, 0.5-2 parts of composite microbial agents and 0.5-1 part of binder. The composite soil remediation agent and the preparation method have the advantages that the substances are combined organically, formula and production process are optimized reasonably, the composite soil remediation agent with functions of fertilizing, purifying and remediating the soil and promoting crop growth and development is provided for soil remediation, and accordingly, healthy, green and sustainable agriculture is promoted. The composite soil remediation agent is applied to soil remediation as well as biofertilizer and waste resource utilization.

The invention relates to a method for efficiently producing marsh gas by performing moderate-temperature anaerobic dry fermentation on agricultural waste, which comprises the following steps: uniformly mixing livestock/poultry manure, crop straw and vegetable waste to obtain a mixture, adding an inoculum into the mixture, and carrying out moderate-temperature anaerobic dry fermentation to obtain the marsh gas, wherein the dry matter mass ratio of the sum of the livestock/poultry manure and vegetable waste to the crop straw is (0.3-0.4):1, and the dry matter mass ratio of the livestock/poultry manure to the vegetable waste is (0.1-0.3):(0.1-0.2). The method solves the problems of long fermentation time, low gas production rate, high acidification tendency and the like in the independent anaerobic fermentation of the material, greatly enhances the buffer property of the system, reduces the inhibiting effect due to overhigh concentration of the ammonia nitrogen or other inhibitors, widens the selection range of the fermentation raw materials, increases the treatment power on the organic solid waste, reduces the discharge of the agricultural waste, saves the resources and protects the environment.

The invention primarily relates to a multifunctional slow release organic fertilizer containing a heavy metal passivator and a preparation method. The fertilizer comprises the main components: thoroughly decomposed compost, a chemical nitrogen fertilizer, a biochemical inhibitor, a soil heavy metal passivating material, plant growth beneficial elements, a water retaining material and a coating liquid for coating the periphery of the organic particles. The proportion of the thoroughly decomposed compost, the chemical nitrogen fertilizer, the biochemical inhibitor, the soil heavy metal passivating material, the plant growth beneficial elements, the water retaining material and the coating liquid is 1: (0.1-0.3):(0.05-0.1):(0.01-0.2):(0.001-0.02):(0.04-0.08):(0.05-0.1). The fertilizer can reduce bio-availability of heavy metals in the heavy metal polluted soil and reduce adsorption of the heavy metals by crops and increase the content of organic matters in soil and improve the soil fertility, can promote crop growth and enhance water and fertilizer-retaining abilities of the soil, and enhance various functions of crops, for example, disease resistance, drought resistance and the like.

The invention belongs to the field of soil fertilizer, and discloses a powder organic-inorganic water-soluble fertilizer and a preparing method thereof. The powder organic-inorganic water-soluble fertilizer comprises water-soluble organic matter, microelement water-soluble fertilizer, medium element water-soluble fertilizer, and a water-soluble anti-blocking agent. The content of nitrogen, phosphorous and potassium is larger than or equal to 30%, the content of calcium and magnesium is larger than 1%, and the content of organic matter is larger than 10%. According to the powder organic-inorganic water-soluble fertilizer and the preparing method thereof, the preparing technology is simple, the condition is mild, heating and fermenting are not needed, particles do not need to be prepared into, the four materials are directly uniformly mixed to prepare the powder organic-inorganic water-soluble fertilizer, the powder organic-inorganic water-soluble fertilizer can promote the absorption and utilization of crop to nitrogen, potassium, calcium and magnesium, soil beneficial microorganism reproduction is promoted, soil acidization and salinization are relieved, the crop root system growth is promoted, the utilization efficiency of crops to the water and nutrients is improved, the capability of the crops in resisting adversity is improved, and finally the purposes of increasing the yield and improving the product quality are achieved. Long term application of the powder organic-inorganic water-soluble fertilizer can also improve the soil structure and raise land fertility.

The invention discloses a method of utilizing rumen microbes to increase recycling rate of dry anaerobic fermentation organic solid waste and belongs to the field of organic solid waste recycling. The method includes: utilizing ammoniation agents like biogas slurry to pretreat cellulose biomass; mixing the cellulose biomass after being pretreated with poultry-livestock breeding waste according to a C/N proportion of 20-30:1; adding a rumen microbial agent in the mixing process, adjusting pH to 6.5-7.5, and utilizing the characteristic that the rumen microbes are efficient in hydrolysis and can generate methanol. A substrate in the method is low in moisten content, so that the problem of absorption of the biogas slurry after fermentation is avoided; the substrate is pretreated, so that biodegradability of the cellulose biomass waste is improved; the rumen microbial agent domesticated and cultured in vitro is inoculated, so that degrading efficiency and gas generating efficiency of the substrate can be improved and fermentation period can be shortened; the biogas slurry after fermentation has good nitrogen, phosphorus and potassium fertilizer effect, can directly serve as organic fertilizer and is simple in subsequent treatment.

The invention discloses a calcium-iron-silicon-based composite material for restoring heavy metal polluted acid soil and application thereof. The mass ratio of component elements of the composite material is calcium:iron:silicon:manganese:magnesium:phosphorus:aluminum= 30-40:19-25:8-12:1-3:5-6:1-3:2-5, the composite material is particularly prepared from, by volume, 55-70% of calcium silicate, 20-30% of calcium ferrite and 5-15% of compound mixture, and the compound mixture is a mixture of calcium-iron-aluminum oxides, calcium iron silicate, calcium aluminate, calcium-aluminum oxides, calcium-manganese-iron oxides, hydroxyl aluminium phosphate and hydroxyl manganese phosphate. The composite material is used for improving and restoring the heavy metal polluted acid soil, the pH value of the soil can be increased by 0.5-2.5 units, the content of effective state heavy metal in the soil is reduced by 64-98%, the content of heavy metal in agricultural products is reduced by 33-94% compared with a control group, and the yield of the agricultural products is increased by 16-1412% compared with the control group.

A vegetation concrete improved microbial agent comprises the following raw materials in parts by weight: a mixed microbial fermentation powder, bentonite, diatomite, magnesium sulfate, zinc sulfate and boric acid, wherein the mixed microbial fermentation powder is prepared by the steps of carrying out press filtration, flash evaporation and drying of amplified cultured azotobacter chroococcum, bacillus megatherium and bacillus mucilaginosus, to respectively obtain dry powders of azotobacter chroococcum, bacillus megatherium and bacillus mucilaginosus, and mixing the dry powders according to a certain proportion. The vegetation concrete improved microbial agent and the preparation method thereof provided by the invention can solve the problem that the number and types of microorganisms cannot be increased as soon as possible; through the proportion of different beneficial microorganisms, a physicochemical environment of soil is changed, the biological chemical activity of the soil is improved, the fertilizer utilization ratio and the use effect are improved, ultimately, the growth of plants is promoted, and the purpose of the vegetation concrete fertility sustainability is achieved.

The invention provides a soil remediation fertilizer prepared from kitchen waste as well as a preparation method and an application of the soil remediation fertilizer. The soil remediation fertilizeris prepared from kitchen waste subjected to anaerobic heat treatment, a complex microbial inoculant and a synergistic component. The soil remediation fertilizer prepared from the kitchen waste can reduce resource waste and effectively improve the problems of grease, germs and worm eggs of the kitchen waste, so that the physical, chemical and biological properties of soil are effectively improved,soil nutrients are maintained, and the utilization rate of the soil nutrients is increased.

The invention discloses a watermelon plastic film full-mulching cultivation method. The watermelon plastic film full-mulching cultivation method comprises a first step of preparing a land and sowing laguminosae, a second step of evening the laguminosae, a third step of conducting irrigation and covering plastic film, and a fourth step of growing watermelon seedlings and conducting filed management. According to the watermelon plastic film full-mulching cultivation method, due to the fact that the land is fully covered by the two-color plastic film, the two-color plastic film has the effects of restraining weeds and avoiding aphids, the aphids and other insects are effectively prevented from spreading diseases, the land temperature inside a ridge is rapidly improved, and effective degradation of green manure plants is improved. Due to the fact that quick lime is applied, soil acidification can be effectively relieved, the calcium content of soil can be increased, and the rate of watermelon cracking in the watermelon mature period is reduced. Due to the fact that a layer of dry straw covers the plastic film arranged between every two ridges, moistures is absorbed, the dryness degree inside a green house is improved, fixation of watermelon vines is facilitated, and watermelon growth is facilitated. The incidence of fusarium wilt is reduced by 96% compared with that of the prior art. The quality of watermelons is remarkably improved. The sugar degree of each watermelon is increased by 1%-3%. The yield is increased by 200%-600% compared with that of the prior art.

The invention discloses a method for preparing biochar from tea garden waste and the biochar. Waste such as tea branches and tea leaves obtained after tea garden pruning is used as a raw material forpreparing biochar; the prepared biochar has the characteristics of high pH value, developed pore structure, large specific surface area, various element varieties and the like, so that the biochar hasgood adsorption performance, can adsorb and fix various pollutants in an environment medium of a production place and reduce the bioavailability of the pollutants, can be effectively applied to the fields of agriculture and environment, and has wide application prospects. And potential environmental risks are reduced.

The invention belongs to the field of organic fertilizers and particularly relates to a special organic fertilizer for a tea garden and a preparation method of the special organic fertilizer. Earthworms are utilized to digest and decompose organic wastes subjected to compounding, and then, after most of the earthworms are transferred, the residual earthworms and earthworm feces are applied to the tea garden together as the special organic fertilizer for the tea garden. With compounding of a nutrient ratio of organic materials subjected to compounding and a nutrient demand ratio of tea trees, the special organic fertilizer also contains all varieties of micronutrients needed by growth of the tea trees. The organic fertilizer is low in cost, the raw material sources are wide, the investment cost is low, the preparation process simple, thus the organic fertilizer is suitable for being produced and directly used on site in tea gardens by farmers and tea enterprises. The organic fertilizer is made of pure organic components, and improves the soil physical chemistry, the microorganism attribution and the ecological function of tea garden soil when ensuring supply of effective nutrients including nitrogen, phosphorus, potassium, trace elements and the like.