106results about How to "Increase carbon to nitrogen ratio" patented technology

The invention relates to a tobacco field soil improving method. The method comprises the following steps: green manure is applied to soil, the green manure is ploughed down 30-45d before next year tobacco seedling transplantation, and biomass charcoal is applied to soil 15-20d after the green manure is ploughed down. The green manure and the biomass charcoal are combined to restore tobacco field soil, so the content of organic matters in soil is improved, the water retention property of the soil is improved, the growth of roots in the earlier growing stage of tobacco plants is promoted, and early and fast growth of the tobacco plants is promoted; and the method also has the advantages of increase of the content of tobacco leaves, increase of the proportion of high-and-middle tobacco leaves, increase of the output value of the tobacco leaves, improvement of the quality of the tobacco leaves, coordination of chemical components, increase of the fragrance and the oil content of the tobacco leaves, improvement of the smoking quality of the tobacco leaves, reduction of the application amount of chemical fertilizers, and improvement of the utilization rate of the fertilizers.

The invention provides a vegetable residue, crop straw and livestock and poultry excrement combined composting process. An aerobiotic and anaerobic combined composting mode is adopted in the process. The process comprises the steps of material pretreating, mixing, composting, primary fermenting, secondary fermenting, thorough decomposing, sieving or smashing, compost preparing and the like. Crop straw with a high-carbon nitrogen ratio is used, and the problems of high moisture content, low carbon-nitrogen ratio and poor air permeability existing in the high-temperature aerobiotic composting process of vegetable residues are effectively solved; according to the process, the nutrients and moisture of the vegetable residues can be utilized, harmless treatment can be carried out on the vegetable residues, the crop straw and livestock and poultry excrement through high-temperature composting, organic compost is produced, and resource utilization of planting and breeding waste is achieved.

The invention discloses a liquid bacterial agent for rooting, which comprises the following raw materials by weight parts: 20-80 parts of concentrated amino acid fermented liquid, 15-30 parts of urea, 5-20 parts of potassium fulvic acid, 10-20 parts of alginic acid, 5-15 parts of chitosan, 10-30 parts of bacillus subtilis, 5-20 parts of Alpha-pimacol, 10-35 parts of sodium nitrophenolate, 1-4 parts of indole butyric acid potassium, 5-15 parts of 5-nitrate and 10-20 parts of calcium nitrate. According to the invention, the liquid bacterial agent contains various high-activity strains including bacillus laterospor, bacillus licheniformis, bacillus subtilis and the like and dozens of high-purity nutritional ingredients. The liquid bacterial agent has super strong activity, and can quickly reach nutrient deficiency parts and bacteria infection parts of crops after being used so as to quickly complement the deficient elements, and can split mycelium and spore and remove soil-borne diseases so as to allow the crops to be quickly back to health. The liquid bacterial agent has the advantages of good water solubility, strong absorption ability, non-public hazard, no residue and no volatility after being used, and can not cause poison damage for the crops in the greenhouse.

The invention discloses a constructed wetland composite filling material for water treatment and a preparation method thereof. The constructed wetland composite filling material for water treatment is composed of small balls having sizes of 8 to 17 millimeters and comprises: by weight, 10 to 20% of sludge, 20 to 30% of red mud, 5 to 10% of straw carbon, 3 to 8% of sodium silicate, 1 to 5% of kaolin, 6 to 15% of white cement and the balance water. The preparation method comprises the following steps of carrying out dehydration, drying and crushing processes respectively on sludge and red mud, crushing and carbonizing straw, mixing sodium silicate, kaolin, white cement, the obtained straw carbon, the crushed red mud and the crushed sludge according to a certain ratio, adding water into the mixture, stirring to obtain small balls having sizes of 8 to 17 millimeters, heating the small balls at a temperature of 80 to 250 DEG C, carrying out heat preservation, naturally cooling to room temperature, and drying in air. The constructed wetland composite filling material for water treatment has wide raw material sources, a low cost, good hydrophily, a large specific surface area, high porosity, strong adsorptivity and good bio-film formation effects, and improves sewage pollutant removal effects produced by a constructed wetland.

The invention discloses a sludge aerobic composting method. The method disclosed by the invention is a method for carrying out sludge aerobic composting by taking afforest wastes (such as branch sections) as a conditioner, and comprises the following steps: (1) mixing sludge and the afforest wastes according to a mass ratio of (2-4):1, specially 3:1, so as to obtain a mixture; and (2) composting the mixture obtained in the step (1) and monitoring the temperature of a pile body in the composting process; in the composting process, turning for one time when the temperature of the pile body is more than 60 DEG C; finishing the composting after a plurality of times of turning and when the temperature of the pile body is reduced to be lower than 30 DEG C and is not raised. According to the sludge aerobic composting method, the high-temperature aerobic composting of organic wastes is used as the basis and the afforest wastes are used as the conditioner to treat the municipal sludge so as to consume a large amount of the afforest wastes while the harmlessness and the reclamation of the sludge are realized, so that the two aims can be realized by one action. Visibly, the sludge aerobic composting method has a wide application prospect.

The invention provides an industrial cultivation method for preparing agaricus bisporus by using fungi residues of edible fungi. The industrial cultivation method comprises the following steps of establishing a heap by using the following materials in part by weight: 100 parts of wheat straws or rice straws serving as a main material, 20-40 parts of chicken manure, 5-10 parts of plaster, 0.5-1 part of urea and 3-5 parts of cake powder according to the conventional method and turning the heap once; adding 10 parts of the chicken manure in 20-40 parts of fungi residues which are discharged from a bag, smashed and dried, adding water in the mixture and blending the mixture evenly; fermenting various mixed raw materials for 3-5 days and pouring the mixture in a primary fermentation tank; fermenting the main material and auxiliary materials again for 3-5 days; pouring the main material and the auxiliary materials in a secondary fermentation tunnel; forming an air inlet hole in the bottom of a fermentation material pile; properly blowing up and supplying oxygen by using a centrifugal fan; fermenting the main material and the auxiliary materials for 7-10 days; racking and sowing 0.5-1 liter of agaricus bisporus fungi in every square meter of land after the main material and the auxiliary materials are ripe; covering the agaricus bisporus fungi by using soil and producing the fungi; and harvesting the fungi in good time. By the industrial cultivation method, raw materials for producing the agaricus bisporus can be found out easily, and residues generated after industrialized production of pleurotus eryngii and asparagus are circularly and efficiently utilized.

The invention discloses a method for enhancing the denitrification of a subsurface flow constructed wetland by adding an alkali-heat-treatment maize straw carbon source, and belongs to the technical field of the sewage treatment of constructed wetlands. The method comprises the following steps of (1), using maize straw as a raw material, cutting the maize straw into equal-length small segments, washing the equal-length small segments by using water to remove dust, drying the equal-length small segments, proportioning the equal-length small segments according to a solid-to-liquid ratio of 1 to 30 by using a 1 percent NaOH solution, heating an obtained mixture for 1h at a constant temperature of 90 DEG C in a water bath, taking out the mixture, and drying the mixture to a constant weight; (2), carrying out a static release experiment on alkali-heated maize straw carbon source, determining the carbon source release amount and the nitrogen source release amount of the alkali-heated maize straw carbon source through a fitted curve, and calculating the addition amount of the carbon source in the wetland according to that the ratio of the influent COD (Chemical Oxygen Demand) concentration, the TN (total nitrogen) concentration and the influent flow of the subsurface flow constructed wetland to C / N (carbon / nitrogen) of sewage is equal to 7 to 1 is an optimal carbon nitrogen ratio; (3), adding the alkali-heated maize straw carbon source at the bottom of a soil layer and at the upper part of a gravel layer of the wetland according to the configuration and the running mode of the subsurface flow constructed wetland. By using the method for enhancing the denitrification of the subsurface flow constructed wetland by adding the alkali-heat-treatment maize straw carbon source, the TN removal rate of the subsurface flow constructed wetland is increased by 31.07 percent.

The invention relates to a kitchen garbage slurry anaerobic fermentation wastewater treatment method, in particular to a treatment method for treating wastewater produced in other procedures through wastewater produced after anaerobic fermentation dehydration of kitchen garbage slurry and kitchen garbage. Wastewater is subjected to oil-separation primary precipitation, water amount and water quality adjustment, first pH value adjustment, free ammonia stripping in an ammonia stripping tower, second pH value adjustment, A / O biochemical treatment, precipitation treatment, treatment in a Fenton reactor and treatment in a coagulative precipitation tank, so that pollutants such as COD, BOD5 and SS in the wastewater are removed, TN and TP can be removed effectively, the wastewater chroma can be lowered effectively, the TN and TP removing rates are increased, and pollutants such as COD, BOD5, TN, NH3-N, TP and chroma in the treated wastewater can stably meet the requirements in Integrated Wastewater Discharge Standard (GB8978-1996, grade III standard) and Wastewater Quality Standards for Discharge to Municipal Sewers (GB / T 31962-2015, grade B).

The invention relates to the field of sludge treatment, in particular to a treatment method of excess sludge, which is used for treatment the excess sludge with low content of organic matters in a sewage treatment plant. The treatment method comprises the following steps of: performing ultrasonic pretreatment on the excess sludge; mixing the excess sludge after pretreatment with kitchen waste; and performing two-phase anaerobic process treatment on a mixture of the excess sludge and the kitchen waste. According to the treatment method of the excess sludge, disclosed by the invention, the ultrasonic pretreatment is firstly performed on the excess sludge with the low content of the organic matters for breaking microbial cell wall membranes and improving the mass concentration of dissolved COD (chemical oxygen demand) in the sludge; the excess sludge after the pretreatment is mixed with the kitchen waste according to a certain proportion, so that the characteristics of high content of the organic matters and abundant nutrition of the kitchen waste are fully utilized, the content of the organic matters and the carbon-nitrogen ratio in the sludge are improved, the biodegradability of the sludge is further improved, the operation is simple, the management is convenient, and the treatment method is suitable for the sludge treatment of large, medium and small-sized sewage treatment plants; and simultaneously, the treatment and the disposal of the kitchen waste can realize resource utilization.

The invention relates to biochar slow release fertilizer special for tobacco planting. The biochar slow release fertilizer special for tobacco planting comprises, by weight percentage, the components of biochar 65%-85%, special compound fertilizer for tobacco 5%-25%, heavy calcium 2%-8%, potassium sulphate 2%-10% and the balance micro element fertilizer. According to the biochar slow release fertilizer special for tobacco planting, the biochar serves as a basis, the soil carbon nitrogen ratio is improved and the soil organic matter content is increased through the biochar, the nitrogen usage amount is controlled by the special compound fertilizer for the tobacco, the insufficient of the P and K elements is supplemented by the heavy calcium and the potassium sulphate, and therefore the purposes of improving the tobacco field soil environment, the carbon nitrogen ratio of the tobacco field soil, the tobacco fertilizer utilization ratio and the tobacco quality and increasing the yield are finally achieved.

The invention relates to charcoal for tobacco field soil improvement and a preparation method of the charcoal, and belongs to the technical field of agricultural fertilizers. The charcoal for tobacco field soil improvement comprises a production raw material of distillers' grains. The preparation method specifically comprises the following steps: performing mixing fermentation on one or more raw materials of sorghum, rice, sticky rice, wheat, corn and the like to brew wine; putting obtained distillers' grains into a calcining furnace for calcining so as to obtain a calcined product; performing water spraying washing on the obtained calcined product, thereby obtaining a charcoal product. As the distillers' grains are adopted as a raw material, and a specific preparation method is utilized, the obtained product is good in practicability, high in carbon content and rich in trace nutrient element, the yield of tobacco can be effectively increased, the quality of the tobacco and the fertilizer utilization efficiency can be effectively improved, the physical and chemical properties of soil of a tobacco field can be remarkably improved, the ratio of carbon to nitrogen in the soil of the tobacco field can be remarkably increased, the soil porosity can be improved, the soil capacity can be reduced, the maximum water-holding capacity of the soil can be increased, the microorganism environment of the soil can be improved, and in the application process, the charcoal is applied together with a base fertilizer for planting the tobacco, so that the labor is not increased.

The invention discloses a micro-polluted water ecological purification system suitable for a river water source. The micro-polluted water ecological purification system is formed by connecting a waterinlet channel, an ecological water storage pond, a surface flow constructed wetland, a horizontal underflow constructed wetland and an ecological oxidation pond in series, wherein the water outlet ofthe water inlet channel is provided with a drop weir communicated with the ecological water storage pond, the water outlet of the ecological water storage pond is provided with a water distribution channel communicated with the surface flow constructed wetland, the ecological water storage pond is communicated with the water distribution channel through a water collection pipe, the surface flow constructed wetland is communicated with the horizontal subsurface flow constructed wetland through a water collection pipe, a tumbling dam is arranged at the outlet of the horizontal subsurface flow constructed wetland and is communicated with the ecological oxidation pond, a carbon source adding area is arranged in the horizontal subsurface flow constructed wetland, and the water outlet of the ecological oxidation pond is communicated with a water supply plant. A biological purification technology is adopted, and a continuous aerobic-anaerobic process is set according to the pollutant conversion rule, so the system has a good purification effect on water, and also has good landscape values and good economic benefits.

The invention provides an anaerobic fermentation method of kitchen wastes and wastewater. The method comprises the following steps: (a) mixing the kitchen wastes and wastewater with a carbon source and a nitrogen source to obtain a mixed solution, wherein the mass ratio of carbon to nitrogen in the mixed solution is (30-40) to 1; (b) performing anaerobic fermentation on the mixed solution obtained from the step (a) to generate biogas. A study discovers that the kitchen wastes and wastewater contain higher content of soluble carbohydrate, protein and fat, the carbon content is higher, and the carbon-nitrogen ratio of the kitchen wastes and wastewater continues to be increased on the basis of higher carbon content, so that the anaerobic fermentation process can be conveniently conducted, the biogas yield can be increased, and the content of methane in the obtained biogas can be increased. An experimental result shows that the biogas yield is 383.0 mL / g and the content of methane in the obtained biogas can reach up to 85% in the method provided by the invention.

The invention discloses a total nutrition carbon-based soil remediation fertilizer and a production method thereof and belongs to a carbon-based soil remediation fertilizer used for improving a soil environment and enhancing the maturity, yield and quality of flue-cured tobacco. The needs of nutritive materials in the crop growth process can be met, and conservation of soil quality is realized. The fertilizer mainly comprises the following components: 30-40% of biomass charcoal, 20-40% of a sesame seed cake fertilizer, 2-10% of a multi-element mineral fertilizer, 10-25% of humic acid and 15-25% of a composite fertilizer. In the fertilizer production process, key technologies such as biomass pyrolysis, cake fertilizer fermentation and the like are adopted, so that the effects of improving the C / N ratio in the soil, improving the quality and improving the aroma quality and aroma quantity of the flue-cured tobacco. The carbon-based soil remediation fertilizer disclosed by the invention is an optimal fertilizer for producing organic green agricultural products, can be widely applied to agricultural crops such as tobacco, fruit trees, corn, rice, sweet potatoes, watermelons, vegetables and the like and has important practical significance on agricultural sustainable development.

The invention belongs to the technical field of environmental protection, and particularly relates to a method for preparing a biomass fuel mainly from fresh chicken manure. The method comprises the following steps: 1) pretreating raw materials; 2) fermentation: mixing fresh chicken manure, mushroom sticks and calcined shell powder, inoculating deodorizing composite microbes and nitrogen fixation-desulfurization composite microbes, and carrying out pile fermentation; 3) naturally drying the fermentation material; and 4) adding tea stems, and carrying out extrusion granulation. The fresh chicken manure is used as the main raw material, the waste mushroom sticks, calcined shell powder and tea stems are used as the auxiliary raw materials, the deodorizing composite microbes and nitrogen fixation-desulfurization composite microbes are added, and the flammability and comprehensive combustion characteristics of the reinforcing material of the composite microbes are fully utilized, thereby preparing the biomass granular fuel which has the advantages of low ignition point, high combustion heat value and high combustion rate. The method can greatly consume chicken manure, and solves the problem of environmental pollution caused by chicken manure. The method provides direction for the recycling of the waste mushroom sticks, shells and tea stems.

The invention relates to a method and a system for improving the denitrification efficiency of underflow artificial wetlands. The system comprises a grating well 1, an anaerobic hydrolytic pond 2, a filter unit 6, a micro-aeration oxygenating unit 7, a primary artificial wetland 3, a carbon source replenishing pond 8, a secondary artificial wetland 4, a carbon source replenishing pond 9 and a third artificial wetland 5 which are connected in series with one another. By the system, a carbon nitrogen ratio of sewage can be improved, the denitrification efficiency of the sewage can be improved, and the sewage can be treated at high efficiency. The method and the system have the advantages of low investment cost and operating cost, high impact load resistance, convenience of maintenance and management and the like.

The invention provides a kitchen waste anaerobic digestion wastewater treating method which is used for treating wastewater produced from kitchen waste slurry after anaerobic digestion and dewatering and wastewater produced in other procedures of kitchen waste treatment. The wastewater is subjected to oil-separation primary sedimentation, water quantity and water quality regulation, first pH regulation, free ammonia stripping in an ammonia stripping tower, second pH regulation, A / O biochemical treatment, sedimentation treatment, air floatation treatment, treatment in a Fenton reactor, treatment in a coagulative sedimentation tank and treatment in a biological aerated filter in sequence. With adoption of the method, pollutants such as COD (chemical oxygen demand), BOD5 (biochemical oxygen demand), SS (suspended solids) and the like in the wastewater are removed effectively, TN (total nitrogen) and TP (total phosphorus) can be removed effectively, wastewater chroma can be reduced effectively, TN and TP removal rate is increased, the pollutants such as COD, BOD5, NH3-N, TP and the like in the treated wastewater as well as the chroma of the treated wastewater can stably meet requirements of level-1 in the integrated wastewater discharge standard (GB8978-1996), and TN is smaller than 70 mg / L.

The present invention provides an optimization method for a fertilizer wastewater treatment process. The original process comprises the following steps of: homogenizing and weight-equalizing fertilizer wastewater by an adjusting tank, pumping the wastewater from the adjusting tank to a primary aeration tank by a wastewater pump to remove part of COD (chemical oxygen demand) and toxic and harmful substances in the wastewater; and introducing the primarily settled wastewater into the front denitrification biological denitrogenation section and subsequent physical and chemical advanced treatmentsection of an anoxic tank / aerobic tank, and simultaneously adding high-efficiency microbial flora to a biochemical system. By optimizing the dissolved oxygen concentration of the primary aeration tank and nitrification liquid reflux ratio R and sludge reflux ratio r2 of the front denitrification biological denitrogenation section of the anoxic tank / aerobic tank, the optimization method improves the total nitrogen removal rate of the fertilizer wastewater from 41.1% to 66.7% (increased by 25.6%) and improves the COD and ammonia nitrogen removal rates to 95.8% and 98.8%, respectively.

The invention discloses organic water-soluble fertilizer and a preparation method. The organic water-soluble fertilizer is prepared from the following raw materials in parts by weight: 50-60 parts of lactic acid fermentation residues, 45-55 parts of amino acid, 20-30 parts of humic acid, 30-40 parts of ammonium dihydrogen phosphate, 40-50 parts of potassium nitrate, 20-30 parts of urea, 30-50 parts of calcium carbonate powder, 6-8 parts of glucose, 20-30 parts of starch, 3-5 parts of alginic acid, 13-16 parts of hydroxyethylcellulose, 3-6 parts of hydrogen peroxide, 2-6 parts of sodium stearate, 10-14 parts of bentonite, 6-9 parts of styrene, 13-16 parts of methacrylic acid, 3-4 parts of dimethyl formamide, 8-12 parts of astragalus polysaccharide, 4-8 parts of hypericin, 5-7 parts of hydroxyethyl cellulose, 3-5 parts of potassium fulvate and 60-75 parts of water. The organic water-soluble fertilizer has the advantages that soil organic matter can be increased, and emission of greenhouse gas is reduced; soil fertility is improved; the carbon and nitrogen ratio of soil is increased, and number and breeding of beneficial microorganisms are increased; soil permeability is improved, soil microbial flora is increased, and soil is improved; the soil pH is adjusted; heavy metals and pesticide residues in soil can be adsorbed and passivated, and damaged soil is remedied.

The invention provides a pleurotus nebrodensis cultivation material, which is characterized in that broad bean skin is taken as the main raw material, cotton linters, wood chips, wheat bran, maize meal, gypsum powder and other substances are taken as auxiliary materials, and the water content of the cultivation material is 63%-65%. The invention further provides a manufacturing method of the cultivation material. Compared with the wood chip cultivation material, the pleurotus nebrodensis cultivation material has the following advantages: firstly, the pleurotus nebrodensis cultivation material is reasonable in fineness distribution and improved in air permeability and water retaining property, so that the growth rate of pleurotus nebrodensis mycelium is increased and the sack filling time is shortened; secondly, the pleurotus nebrodensis cultivation material is reasonable in carbon-nitrogen ratio and balanced in nutrition, the growth and development of pleurotus nebrodensis sporocarp are promoted, and the yield is improved by 25%-35%; thirdly, the cultivation material channel is widened, and the manufacturing cost is greatly lowered. The invention has the social benefits that as the broad bean skin substitution is used for cultivating pleurotus nebrodensis, part of fungus-wood contradiction can be eased, waste is changed into valuable and energy conservation and emission reduction are facilitated.

The invention provides an urban resident household kitchen garbage cyclic utilization system which comprises a dryer, a spiral stirring conveyor, a composting machine, a bucket elevator, a composting tower, a primary screening machine, a belt conveyor , a mixing agitator, a pelletizer, a secondary screening machine, a particle dryer, a tertiary screening machine and a product packaging machine, wherein a siftage outlet of the primary screening machine is connected with the belt conveyor; a siftage outlet of the secondary screening machine is connected with a sealed shaftless screw conveyer; an oversize outlet of the third screening machine is connected with the product packaging machine; an oversize outlet of the primary screening machine is connected with the bucket elevator; and an oversize outlet of the secondary screening machine and a siftage outlet of the third screening machine are connected with the mixing agitator. The invention further provides an urban resident household kitchen garbage cyclic utilization method. The system is clean and environmentally friendly and high in resource utilization degree, can generate various resources including electricity, heat and organic fertilizer and has high comprehensive utilization benefit.

The invention discloses a balanced-type macroelement water-soluble fertilizer and a preparation method thereof. The fertilizer is prepared from the following raw materials (by weight): 30-40 parts of bagasse, 15-20 pars of bean curd residues, 15-30 parts of corn straw, 35-40 parts of potassium dihydrogen phosphate, 33-38 parts of urea, 3-6 parts of humic acid, 2-4 parts of potassium sulfate, 2-3 parts of disodium ethylene diamine tetraacetate, 1-2 parts of amino-oligosaccharin, 8-12 parts of ammonium sulfate, 10-20 parts of starch, 3-5 parts of glucose, 5-7 parts of compound amino acid, 7-9 parts of diatomite, 12-16 parts of plant ash, 1-4 parts of alginic acid, 2-5 parts of nano-carbon, 3-4 parts of aluminium hydroxide, 4-6 parts of a trace element fertilizer and 60-70 parts of water. The water-soluble fertilizer provides balanced mineral nutrition elements for crops. Utilization rate of the fertilizer is raised. Carbon-nitrogen ratio for soil microorganisms is raised, and power energy source is directly provided. The fertilizer participates in formation and metabolism processes of organs, such as plant germination, leaf growing, flowering, fruit-bearing and the like. Crops resistance is enhanced, and quality of agricultural products is improved.

The invention relates to a cooperative and efficient pig manure and rice straw anaerobic digestion method which includes the steps: S101 uniformly mixing rice straws, pig manure and water according to a certain proportion, inoculating cellulose degradation mixed strains, and standing and cultivating mixture; S102 adding anaerobic sludge into products acquired in the S101, adjusting a pH(potential of hydrogen) value to be 7.2-7.5, and performing anaerobic fermentation cultivation for mixture under the closed oxygen-free conditions. According to the method, specific cellulose degradation mixed strains are added into the mixture of the pig manure and the rice straws, so that biological pretreatment is performed for the mixture, anaerobic fermentation is performed for the pig manure and the rice straws after the pig manure and the rice straws are cooperatively degraded, the anaerobic digestion efficiency of the pig manure and the rice straws and biogas yield are improved, and agricultural waste resources are efficiently utilized.

The invention discloses a soil heavy metal restoration agent capable of enhancing organic carbon level. The soil heavy metal restoration agent is prepared from the following raw materials in parts by weight: 3-5 parts of calcium oxide, 9-10 parts of tea powder, 8-10 parts of monoammonium phosphate, 15-17 parts of edible fungus dreg, 30-32 parts of wood dust, 2-3 parts of potassium oxide, 75-90 parts of deseeded sunflower head, 32-35 parts of maize straw, 26-30 parts of kaolin, 9-11 parts of calcium carbonate, 35-38 parts of slash pine needle and a right amount of water. The soil restoration agent can simultaneously effectively lower multiple heavy metal pollutants in polluted soil. The added fungus dreg, wood dust and the like can enhance the organic carbon level in the soil, thereby enhancing the carbon-nitrogen ratio of the soil, increasing the holding capacity of the soil for nitrogen and other nutrient elements, being beneficial to fertilizing the soil by fertilizer application, further optimizing the soil structure, improving the stability, water retentivity, microbial activity, nutrient exchange and many other factors of the soil aggregate, and implementing the restoration treatment on the polluted soil.

The invention relates to a geobacillus stearothermophilus strain. The geobacillus stearothermophilus R2D2-6. 626069934 is preserved in CGMCC ( China General Microbiological Culture Collection Center)and has the preservation number of CGMCC NO.15478. The strain can be used for maintaining the activity and realizing mass breeding in the compost fermentation high-temperature period; the fast decomposition of organic matters in the compost fermentation can be promoted; the time required by the composting can be greatly reduced; the complete composting degree is improved; the loss of nitrogen elements caused by high temperature or time factors can be reduced; the national NY525-2012 organic fertilizer industry standard can be reached. The organic waste resource reutilization in poultry and livestock culture industry can be favorably improved; the environment damage of the poultry and livestock culture industry can be greatly reduced; the geobacillus stearothermophilus strain also conformsto the operation rule of rural revitalization and green environment agriculture sustainable environment.

The invention discloses a method for reducing emission of potent greenhouse gas N2O in sludge earthworm composting. The method comprises the following steps: step 1, arranging a buffer layer and adding earthworms into the buffer layer, wherein a matrix of the buffer layer is fermented and decomposed feces of livestock and poultry, and the conductivity of the matrix is below 5.0mS / cm; step 2, arranging an isolation net with a plurality of through holes on the buffer layer; step 3, adding sludge on the isolation net to form a reaction zone, wherein the earthworms can move between the buffer layer and the reaction zone through the through holes. According to the method, by adjusting the parameters such as the carbon-nitrogen ratio, the moisture content, the density and the like of the earthworms in the sludge earthworm composting, stabilization and reclamation of the sludge are realized, and the emission of the greenhouse gas in the process of sludge earthworm composting is greatly reduced. The method has the advantages of being high in efficiency, low in consumption and low in operating cost, achieving eco-environment protection and reducing the emission of the potent greenhouse gasN2O, therefore, the method has actual application value in reduction of secondary pollution in sludge treatment processes of sewage treatment plants in medium and small towns.

The invention discloses a method for producing an organic carbon fertilizer through photocatalytic and oxidized organic wastewater and relates to an organic wastewater treatment and waste utilization method. The method includes the following steps that 1, a photocatalytic and oxidized reaction container is prepared; 2, organic wastewater obtained after coarse filtration is pumped into the photocatalytic and oxidized reaction container; 3, photocatalysts and hydrogen peroxide are added, wherein the photocatalysts including TiO<2> / SiO<2> and Fe<3>O<4> are added, the hydrogen peroxide is pumped in, a stirrer is started to mix the photocatalysts and the hydrogen peroxide to be uniform, and the operation process is required to be kept out of the sun; 4, a photocatalysis-oxidative degradation reaction is conducted, wherein a top cover is opened so that sunlight can be directly emitted into the reaction container or an ultraviolet lamp is turned on for illumination; 5, the catalyst is recycled, evaporated, concentrated and made into a liquid organic carbon fertilizer with the carbon content being 50-500 g / L. The organic carbon fertilizer produced through the method can be used for crop irrigation and spraying and can further serve as fertilizer mother liquor to be blended into various types of fertilizers for being applied.

The invention relates to a fertilizer special for improving physical and chemical properties of tobacco planting soil. The fertilizer comprises the following components in percentage by weight: 40%-50% of biochar, 5%-15% of water-retaining agent, 20%-30% of ammonium nitrate, 5%-15% of potassium dihydrogen phosphate, and 10%-20% of potassium sulfate, wherein the biochar is obtained by burning peanut shells under low temperature and oxygen deficient conditions. According to the technical scheme, based on the biochar in combination with the water-retaining agent, the carbon-nitrogen ratio of thesoil can be increased by the biochar and the content of organic matters in the soil can be increased; the water-retaining agent is capable of increasing the water content of the soil; besides, ammonium nitrate is used for controlling the dosage of nitrogen, and potassium dihydrogen phosphate and potassium sulfate are used for supplementing K and P elements so as to improve the physical and chemical properties of the tobacco planting soil. The volume weight of the soil can be reduced, and the water content, the alkali-hydrolyzable nitrogen content, the fast-acting phosphorus content and the fast-acting potassium content in the soil can be increased; the contents of the fast-acting nutrients of the soil can be kept at relatively high levels, and the quality of tobacco leaves can be improved.

The invention discloses a method for pre-treating low carbon-nitrogen ratio sewage by using a primary settlement tank, and belongs to the field of control and treatment of water pollution. The technical scheme of the invention comprises the following steps of: (1) controlling water power residence time of the primary settlement tank to be flexible and adjustable within the range from 0 to 2 hours; (2) arranging sludge inoculation discharge ports at different sludge parts of the primary settlement tank to inoculate and discharge microorganisms of raw water at the upper part of a mud bucket to an anoxic tank; (3) arranging nitration liquid reflux inlets at the different sludge parts of the primary settlement tank to fully utilize the denitrification of the primary settlement tank; and (4) arranging outlet water reflux inlets of a secondary settlement tank at the different sludge parts of the primary settlement tank to fully utilize the denitrification of the primary settlement tank. Inorganic substances can be removed from the low carbon-nitrogen ratio sewage and organic substances and the microorganisms in the sewage can be kept simultaneously through the primary settlement tank, so that the method is favorable for subsequent biological phosphorus removal, nitrogen removal (AAO) or biological nitrogen removal (AO). The method is suitable for biological treatment of suspension and the sewage with larger change of carbon-nitrogen ratio and suitable for old plant transformation and new plant construction.

The invention provides an additive for accelerating pig manure composting maturity and a preparation method and application thereof, which belong to the technical field of organic fertilizer preparation. The preparation method for the additive for accelerating pig manure composting maturity comprises the following steps: ground wood powder is anaerobically heated under the condition of 90 DEG C to120 DEG C for 1 to 1.5 hours, and is then heated to be carbonized under the condition of 500 DEG C to 600 DEG C for 2 to 3 hours; the obtained wood carbon is mixed with hydrochloric acid solution, and the acid-impregnated substance is washed with water to become neutral, and then dried and ground, so that carbonized wood powder is obtained; the carbonized wood powder and 1 to 1.5mol / L of thioureasolution are mixed for impregnation; the obtained suspension is cured under the condition of 100 DEG C to 120 DEG C for 1 to 2 hours, and is then washed with water until the pH value become neutral,and thereby the additive for accelerating pig manure composting maturity is obtained. The additive for accelerating pig manure composting maturity can accelerate the separation of moisture in organicfertilizer, reduce the loss of nitrogen and increase the degree of manure composting maturity.