30results about How to "Reduce hydrogen sulfide" patented technology

The present invention discloses a microbial feed additive. It is made up by using carrier, protein feed, rice bran or wheat bran, cane sugar, bone powder or shell powder, white peony root, acanthopanax root, aspidium and fermenting agent through a certain preparation process. The above-mentioned described carrier can utilize waste material obtained by cultivating edible mushroom. Said additive can raise utilization rate of feed by 20%-30%, and can promote animal growth and development.

The invention discloses a centralization indoor constant temperature circulation aquaculture system which includes two aquaculture ponds arranged side by side. A water inlet and a water outlet are arranged in each aquaculture pond. An aerator and a swell machine are arranged in each aquaculture pond. The centralization indoor constant temperature circulation aquaculture system is characterized in that the two aquaculture ponds are made of thermal insulation materials. A sewage treatment system is arranged between the two aquaculture ponds. A suction sewage device is arranged at the end of water outputting of each aquaculture pond. The suction sewage device is connected with the sewage treatment system through a sewage pipe. A water outlet of the sewage treatment system communicates with each aquaculture pond. The centralization indoor constant temperature circulation aquaculture system has the advantage that circulation utilization of water for aquaculture is achieved so that the quality of aquaculture aquatic products is improved and pollution of sewage discharges to environment is reduced.

The invention provides a production method of a microbial fish guano. The production method comprises the following steps: fermenting materials, drying, crushing, and adding inorganic fertilizer and solid photosynthetic bacteria. Because all the organic fertilizers are fermented, the invention has a good water solubility and can fast culture pelagic organisms in the water substance, thereby providing adequate feedstuff to fishes and shrimps; the invention improves the culture water environment, and reduces the harmful substances in water, such as ammonia, nitrogen, nitrite, hydrogen sulfide and the like; the invention can realize the intensive alternate-breeding culture and greatly increase the yield per unit culture area, and the yield can be increased by more than 40% based on the current service condition; and the invention has the advantages of low cost, safety, high efficiency, environmental friendliness and no pollution, thereby ensuring the production of pollution-free green food.

The invention discloses a biomass sea cucumber ecological breeding method which regularly puts the biomass into a pond during breeding up period of the sea cucumber breeding process in the pond. The original density of the biomass solution is 5-7 billion cells per ml. The biomass can degrade, absorb and convert such organic pollutants as residue baits, excrements and dead biological bodies, nitrogen and sulfur in the sea cucumber breeding environment, form advantage genus groups to effectively restrain growth and breeding of harmful micro-organisms and algae, reduce harmful contents of ammonia nitrogen, nitrous acid and hydrogen sulfide and promote the sea cucumber growth up. The invention has the advantages of convenient management, low breeding costs, high economic benefits, water body breeding optimization, low incidence rate of diseases and low death rate of the sea cucumber.

The present invention discloses a hydrogenation method for producing lubricating oil base oil through poor-quality heavy distillate oil. According to the method, poor-quality heavy distillate oil and hydrogen gas enter a first-stage reaction zone to carry out a hydrorefining reaction, the reaction effluent is separated, the obtained liquid enters a second-stage reaction zone to carry out a hydrorefining reaction, the second-stage reaction effluent enters a third-stage reaction zone to carry out a hydrocracking reaction, the hydrocracking effluent is separated, and at least part of the tail oil and new hydrogen are mixed and then are subjected to an isomerizing dewaxing and finishing reaction to obtain various lubricating oil base oils. With the method of the present invention, the nitrogen-containing impurities in the poor-quality raw material can be subjected to hydrotreating under the relatively mild condition so as to make the poor-quality raw material meet the hydrocracking feeding requirement, such that the lubricating oil base oil raw material source is broadened; and the hydrorefining temperature is substantially reduced so as to increase the operation period of the device and process the poor-quality raw material, or increase the processing capacity of the device in the same operation period.

The invention relates to an aquaculture composite microbial agent, which comprises the following agents by weight: 5-10 parts of Bacillus subtilis, 0.5-4 parts of Bacillus licheniformis, 1-6 parts of bacillus megaterium, 0.2-1 part of Pseudomonas gelatinasa, 0.5-3 parts of Rhodopseudomonas capsulata, and 2-8 parts of Bdellovibrio bacteriovorus. The invention also relates to application of the aquaculture composite microbial agent in improvement of water quality and / or control of aquatic organism diseases.

The present invention discloses a process method for producing lubricating oil base oil through a poor-quality raw material. According to the process method of the present invention, a poor-quality raw material firstly enters a first-stage reaction zone to carry out a hydrorefining reaction, a co-current flow process and a counter flow process are concurrently adopted in the first stage, the generated oil obtained in the first stage enters a second-stage reaction zone to carry out a deep hydrogenation reaction, and the second-stage reaction effluent is subjected to hydrocracking; and the cracking tail oils are subjected to cutting pre-fractionation to obtain the suitable tail oil distillate, and the suitable tail oil distillate is subjected to an isomerizing dewaxing and finishing reaction to obtain the lubricating oil base oil distillate. With the method of the present invention, the nitrogen-containing impurities in the poor-quality raw material can be subjected to hydrotreating under the relatively mild condition so as to make the poor-quality raw material meet the hydrocracking feeding requirement, such that the lubricating oil base oil raw material source is broadened; and the operation period of the device can be increased and the poor-quality raw material can be processed, or the processing capacity of the device can be increased in the same operation period.

The invention discloses a method for producing a biological water-purifying agent through microbe mutual fermentation of chicken manure. The method comprises: mixing 50-65% of fresh chicken manure, 20-30% of pleurotus eryngii residues, and 15-20% of an inorganic compound fertilizer, and inoculating Aspergillus oryzae, a yeast, a photosynthetic bacterium and bacillus subtilis into the mixture for fermentation, which can generate an effective microbe number of 3-4*10<8>CFU / g. Specifically, the inoculated strains are: 2-6 wt% of a solid strain of Aspergillus oryzae ACCC30155, 1-2 wt% of a liquidstrain of saccharomyces cerevisiae ACC20065, 1-2 wt% of a liquid strain of bacillus subtilis ACCC10148, and 1-2 wt% of a liquid strain of photosynthetic bacterium ACCC10650. After 15-20d of stacking fermentation, the biological water-purifying agent can be obtained. And the produced biological water-purifying agent of the invention can be prepared into different water purifying agents and aquaculture products according to needs, thus boasting wide application prospects in agriculture, aquaculture industry and environmental protection industry.

The invention discloses a totally-ecological method for intercropping of fishes and ducks. The method comprises the following steps: (1) selecting a site and reconstructing the site; (2) cleaning and sterilizing a pond; and (3) performing breeding management: A, performing breeding density management: throwing 1000 fry and 100-150 ducks to each mu of the pond; B, performing feeding with foodstuffs, feeding the ducks with leftovers, vegetable leaves, banana stalks, rice and grains, and rice bran; C, controlling environments: rushing remained foodstuffs and duck manure into water every day, and sterilizing a duck coop by adopting a Chinese herbal medicine disinfectant at regular intervals; and disinfecting the pond by adopting a water purification microbial agent every month; and D, preventing and controlling diseases: isolating sick ducks in time, removing dead fishes in time, grinding Chinese herbal medicines to powder, and mixing the Chinese herbal medicine powder and duck food to feed the ducks. The method for intercropping of the fishes and the ducks is safe and pollution-free and can guarantee pond water quality, meanwhile resistance and yields of the fishes and the ducks are high, and economic benefits are good.

The invention belongs to the technical field of comprehensive utilization of biomass and livestock and poultry manure, and particularly relates to a poly-generation method employing coupling of biomass with livestock and poultry manure. The poly-generation method comprises the following steps: burning straws to generate power so as to provide heat, pretreating the straws and the livestock and poultry manure, respectively hydrolyzing and acidifying the straws and livestock and poultry manure, feeding the straws and livestock and poultry manure having been hydrolyzed and acidified into a CSTR anaerobic fermentation tank, allowing the hydrolyzed and acidified straw and livestock and poultry manure to undergo medium-temperature anaerobic fermentation in the CSTR anaerobic fermentation tank so as to obtain biogas and biogas slurry, subjecting the biogas slurry to solid-liquid separation before preparation of an organic fertilizer from the biogas slurry, and subjecting the biogas to drying, gas-water separation, desulfurization and filtration before preparation of natural gas from the biogas. According to the invention, the straw and the livestock and poultry manure are coupled and recycled to generate electricity, heat, cold, biogas and organic fertilizer, so harmless utilization of resources is realized.

The present invention relates to a microorganism water quality modifier, particularly to a microorganism type grass control composition used in aquaculture, wherein the microorganism type grass control composition comprises main raw materials, fillers and auxiliary materials, wherein the main raw materials comprise Bacillus subtilis, Baclicus lincheniformis, Lactobacillus plantarum, Lactobacillus acidophilus and other beneficial bacteria, the fillers comprise zeolite powder, sodium chloride, magnesium sulfate, calcium sulfate, calcium hydrogen phosphate, and sodium sulfate, and the auxiliary materials comprise pregelatinized starch, micro-powder silica gel, dextrin, a starch-lactose complex, glucose, magnesium stearate, and microcrystalline cellulose. According to the present invention, the Bacillus subtilis, the Baclicus lincheniformis, the Lactobacillus plantarum, the Lactobacillus acidophilus and other beneficial bacteria are directly pressed into the tablets with the diameter of 4-12 mm by using the tableting machine under the dry powder state, and during the use, the tablets can be directly sprinkled through manual or machinery manner so as to substantially reduce the labor intensity, and the tablets sink into the pool bottom portion heavy pollution zone so as to directly provide the effect and effectively improve the use effect.

The invention relates to a polyester FDY hot melting fiber and a preparation method thereof. The polyester FDY hot melting fiber is prepared by taking phthalic acid (terephthalic acid and isophthalicacid), ethylene glycol, diethylene glycol, a glass transition temperature regulator (isophthalic acid sulfonate), a macromolecular modulus regulator (fatty acid ester or long chain diol having a carbon atom number greater than or equal to 5) and zinc oxide as reaction raw materials, and preparing low-melting-point polyester, and then carrying out spinning to obtain the polyester FDY hot melting fiber according to an FDY process. The prepared polyester FDY hot-melting fiber is made of the low-melting-point polyester, wherein the molecular chain of the low-melting-point polyester is composed ofa phthalic acid chain segment, an ethylene glycol chain segment, a diethylene glycol chain segment, a glass transition temperature regulator segment and a macromolecular modulus regulator chain segment. According to the preparation method of the polyester FDY hot melting fiber, the influence of hydrogen sulfide on the polyester hot-melting fiber in the polymerization process is reduced, the initial modulus of the fiber is reduced, meanwhile, fiber adhesion is avoided, and the method is simple, and the fiber application range is wide.

The invention relates to a sulfur removal agent suitable for the production of an oil-gas well. The sulfur removal agent comprises the following components in percentage by mass: 10 to 25 percent of hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine, 5 to 20 percent of alcohol amine, 5 to 20 percent of small molecular alcohol and the balance of water. The alcohol amine is one or a mixture of more thantwo of monoethanolamine, ethyleneglycol amine, diisopropanolamine, methyldiethanolamine and triethanolamine; and the small molecular alcohol is one or a mixture of more than two of methanol, ethanol and propanol. The sulfur removal agent has a simple formula, can be soluble with water, and can effectively reduce the content of hydrogen sulfide in crude oil or natural gas; simultaneously, productsgenerated by the sulfur removal agent and the hydrogen sulfide are water-soluble, and cannot block a mineshaft and influence the normal production of the oil-gas well; and the sulfur removal agent can achieve effects at the temperature of 30 to 120 DEG C and can be quickly reacted with the hydrogen sulfide.

The invention relates to a water body repairing agent for reducing N and P in a water body as well as a preparation method and application of the water body repairing agent. The water body repairing agent comprises a complex microbial inoculant, corn starch and attapulgite, wherein the complex microbial inoculant consists of enterococcus faecalis, bacillus coagulans, bacillus licheniformis, saccharomycetes, cellulase and phosphatase. The preparation method of the repairing agent comprises the following steps: 1, adding attapulgite into corn starch in proportion, and then sequentially adding various bacteria and enzymes in proportion; 2, stirring for 20 minutes at a constant speed by using a V-shaped stirrer or a three-V stirrer; and 3, mixing the obtained mixture with pond water according to a ratio of 1: 100 to 1: 400, and uniformly stirring to obtain the water body restoration agent for reducing N and P in a water body. The effective bacteria content is sufficient, and the water pH is stabilized. The problem of insufficient beneficial bacteria in water is solved. Harmful indexes such as ammonia nitrogen, hydrogen sulfide and the like in water are reduced, organic matters and residual baits in water are decomposed, and a high-quality ecological environment is provided for cultured objects.

The present invention relates to the technical filed of fish meal and particularly relates to a preparation method of steam fish meal and the prepared steam fish meal. The preparation method consists of the following steps: A. raw materials are selected, the selected raw materials are washed, and the washed raw materials are smashed; B. the smashed raw materials are subjected to a cooking treatment; C, the cooked raw materials are subjected to a squeezing treatment to obtain squeezed cakes and squeezed liquid; the squeezed cakes are subjected to a shredding treatment; and the squeezed liquid is treated to obtain coarse residues, coarse fish oil and juice water, the juice water is concentrated, the concentrated juice water and the coarse residues are added into the squeezed cakes, and the mixture is subjected to a steam drying; and D, the mixture is cooled, and the cooled mixture is subjected to a crushing treatment to prepare the steam fish meal. The preparation method is simple in technology, stable in quality, and less in nutrient loss, slows down the lipid oxidation process of the fish meal and reduces the effects of environment caused by excrement. The steam fish meal is good in quality, high in nutritional value, high in protein contents, has main amino acids basically the same with the in vivo tissue amino acids of chickens, fish, shrimps and other aquaculture animals, is rich in mineral contents, can promote the growth and development of cultured animals, and improves the nutrient content of the cultured animals.

The invention relates to the technical field of fish meal, in particular to high-protein fish meal and a preparation method thereof. The preparation method of the high-protein fish meal comprises the following steps: A, selecting fish as a raw material, cleaning and then crushing the fish; B, cooking the crushed raw material fish; C, adding the crushed raw material fish into isopropanol to carry out extraction treatment, removing the isopropanol after extraction, and repeating the step of extraction treatment for three times; D, after carrying out vacuum freeze drying on the extracted raw material fish, smashing the raw material fish through an ultrafine grinder to obtain the high-protein fish meal. The preparation method of the high-protein fish meal disclosed by the invention is simple in technology, convenient in operation control and stable in quality, and the isopropanol with high safety is used for extraction treatment, so that the fish meal is eaten safely; the nutritional ingredient of the fish meal in the preparation process is little in loss, the fishy smell of the fish can be effectively removed in the extraction process, the fat content is greatly reduced, the color of the fish meal is improved, and the prepared fish meal is high in protein level, full of nutriments and high in pepsase digestibility.

The invention discloses a water-soluble fertilizer and a preparation method thereof. The water-soluble fertilizer is prepared from the following raw material in parts by weight: 20-40 parts of urea, 20-40 parts of potassium dihydrogen phosphate, 20-40 parts of potassium chloride, 2-8 parts of calcium nitrate, 2-8 parts of magnesium sulfate, 1-3 parts of ferrous sulfate, 1-3 parts of zinc sulfate,1-3 parts of borax, 1-5 parts of fulvic acid and 0.1-0.3 part of a microbial agent. The water-soluble fertilizer disclosed by the invention is reasonable in component matching and sufficient in nutrition, particularly has various promotion effects on the growth of plants by virtue of the microbial agent, and has very good fertilizer efficiency.

The invention discloses a bio-organic fertilizer and a preparation process thereof, and relates to the technical field of organic fertilizers, the bio-organic fertilizer comprises 10-12 parts of cavings, 8-10 parts of weeds, 10-12 parts of human and animal excreta, 5-7 parts of crop straws, 3-5 parts of stems and leaves, 3-5 parts of sawdust, 1-3 parts of rice husks, 1-3 parts of soybean meal, 1 part of oyster shell powder, 0.3-0.5 part of a fertilizer additive and 0.1-0.3 part of an auxiliary strain, the auxiliary strains comprise bacillus mucilaginosus, bacillus laterosporus, brown azotobacter, bacillus coagulans, aspergillus oryzae and paecilomyces lilacinus, and the bacillus mucilaginosus, the bacillus laterosporus, the brown azotobacter, the bacillus coagulans, the aspergillus oryzae and the paecilomyces lilacinus are added according to the mass part ratio of (1-2): (3-5): (5-7): (2-3): (4-5): (2-4); the fertilizer additive is formed by mixing diethyl aminoethyl hexanoate, compound sodium nitrophenolate, forchlorfenuron and pimacol according to the mass part ratio of (1-2): (2-3): (1-2): (3-4). By adding the oyster shell powder, the fertilizer additive and the auxiliary strain, the soil pollution can be reduced, and the growth of crops can be promoted in a targeted manner.

The invention relates to the technical field of paint preparation, and specifically discloses a water-based biological environment-friendly paint. The paint is prepared from the following raw materials in parts by weight: 30 to 40 parts of acrylic acid modified alkyd resin emulsion; 20-30 parts of a polyester resin emulsion, 3-6 parts of a solvent, 0.2-0.5 part of a silanol wetting agent, 0.2-0.5part of an antifoaming agent, 5-10 parts of a curing agent, 0.2-0.4 part of a leveling agent, 0.4-0.6 part of a pH regulator, 20-30 parts of water, 3-5 parts of an active agent and 0.2-0.4 part of a biological flora liquid. By improving the performance of the water-based paint, insoluble minerals are decomposed, the nitrogen fixation effect is achieved, diseases are resisted, heavy metal is degraded, free nitrogen in air is fixed, harmful gas such as ammonia gas and hydrogen sulfide in the environment can be reduced, and potassium is decomposed; in addition, the water-based paint prepared through the formula and the method has excellent performance in the aspects of glossiness, fullness, water resistance, adhesive force and hardness.

The invention discloses a poultry disinfectant and a preparation method thereof, and the poultry disinfectant comprises traditional Chinese medicinal herbs for treating respiratory infection of poultry. The traditional Chinese medicinal herbs mainly comprise the following raw materials in parts by weight: 120 to 160 parts of Chinese angelica, 100 to 180 parts of stir-baked semen raphani, 80 to 100parts of herba ephedrae, 80 to 100 parts of platycodon root, 120 to 150 parts of acori graminei rhizoma, 50 to 100 parts of radix rehmanniae recens, 110 to 160 parts of rhizoma alismatis, 140 to 180parts of radix isatidis and 60 to 100 parts of raw radix et rhizoma rhei. Compared with the prior art, the disinfectant has the following beneficial effects: ammonia is reduced and deodorization is achieved, ammonia and hydrogen sulfide can be reduced by 60-80% after the disinfectant is used for 1 to 3 hours, the ammonia concentration in a house is reduced to 10 PPM or below, sterilization and disinfection are achieved, the indoor flora environment is optimized, high-concentration organic acids can kill most of harmful bacteria and decompose all kinds of viruses, supplemented beneficial bacteria can effectively adjust the indoor flora environment and reduce external pathogeny pressure of animal husbandry, and all kinds of perennial dirt, harmful bacteria, moss and other debris left in animal drinking water pipes can be effectively cleaned.

The invention provides a preparation method of an aquaculture nutrient water-regulating agent, and belongs to the technical field of purification and treatment of water quality of an aquaculture waterbody. The water-regulating agent is prepared through mixing and fermentation of a composite microbial agent-containing mixture and titanium dioxide, wherein a composite microbial agent is an enzyme microbial agent, and the titanium dioxide is silver-loaded titanium dioxide nanotubes. During use of the water-regulating agent, an artificial light source and ultrasonic waves are utilized, and the water-regulating agent can be obtained through simple fermentation, has the advantages of safety, non-toxicity and no side effects; and harmful microorganisms, inorganic salts and organic substances inthe water body can be eliminated, and nutrients can be provided simultaneously, so that the water body is optimized, and a good ecological environment is created.

The invention provides a production method of a microbial fish guano. The production method comprises the following steps: fermenting materials, drying, crushing, and adding inorganic fertilizer and solid photosynthetic bacteria. Because all the organic fertilizers are fermented, the invention has a good water solubility and can fast culture pelagic organisms in the water substance, thereby providing adequate feedstuff to fishes and shrimps; the invention improves the culture water environment, and reduces the harmful substances in water, such as ammonia, nitrogen, nitrite, hydrogen sulfide and the like; the invention can realize the intensive alternate-breeding culture and greatly increase the yield per unit culture area, and the yield can be increased by more than 40% based on the current service condition; and the invention has the advantages of low cost, safety, high efficiency, environmental friendliness and no pollution, thereby ensuring the production of pollution-free green food.

The invention relates to an aquaculture method. The aquaculture method comprises the steps that in the culture process, different agricultural activities in different months are determined according to the change of past water temperatures, disease prevention and production material preparation can be conducted in advance, the agricultural activities for all months are determined, and then practitioners can be taught to carry out aquaculture activities scientifically and effectively. The method has the advantages that not only can the agricultural activities of aquaculture in the whole year beshown in advance, but also the timing of applying key technologies such as disease prevention can be prompted in advance, farmers are guided to carry out production activities scientifically, beginners can become culture experts quickly, and the farmers engaged in aquaculture many years can summarize their experience and improve the culture level of themselves.

The invention relates to a water purifying agent for promoting photosynthesis of submerged plants as well as a preparation method and application of the water purifying agent. The water purifying agent is prepared from polyacrylamide, magnesium sulfate, polyaluminum chloride, potassium ferrate, N-dodecyl alanine and attapulgite. The preparation method of the water purifying agent comprises the following steps of: 1, sequentially adding all the substances into the attapulgite according to the proportion; 2, uniformly stirring for 15 minutes by using a V-shaped stirrer or a three-V stirrer; and 3, mixing the obtained mixture with pond water according to a ratio of 1: 40 to 1: 400, and uniformly stirring until no precipitate exists, thereby obtaining the water purifying agent for promoting photosynthesis of submerged plants. The water purifying agent is safe and effective, and has an oxygenolysis function. Harmful indexes such as water ammonia nitrogen and hydrogen sulfide are reduced, organic matters suspended in the water body are removed, the transparency of the water body is rapidly improved, photosynthesis is provided for aquatic plants, and sufficient illumination is provided for temperature summation animals.

The invention discloses a method for producing a biological water-purifying agent through microbe mutual fermentation of chicken manure. The method comprises: mixing 50-65% of fresh chicken manure, 20-30% of pleurotus eryngii residues, and 15-20% of an inorganic compound fertilizer, and inoculating Aspergillus oryzae, a yeast, a photosynthetic bacterium and bacillus subtilis into the mixture for fermentation, which can generate an effective microbe number of 3-4*10<8>CFU / g. Specifically, the inoculated strains are: 2-6 wt% of a solid strain of Aspergillus oryzae ACCC30155, 1-2 wt% of a liquid strain of saccharomyces cerevisiae ACC20065, 1-2 wt% of a liquid strain of bacillus subtilis ACCC10148, and 1-2 wt% of a liquid strain of photosynthetic bacterium ACCC10650. After 15-20d of stacking fermentation, the biological water-purifying agent can be obtained. And the produced biological water-purifying agent of the invention can be prepared into different water purifying agents and aquaculture products according to needs, thus boasting wide application prospects in agriculture, aquaculture industry and environmental protection industry.

The invention discloses an efficient ecological restoration agent for bottom mud. The efficient ecological restoration agent is prepared from the following components in parts by weight: 30-35% of denitrifying bacteria, 20-25% of saccharomycetes, 10-15% of lactic acid bacteria, 10-15% of thiobacteria, 10-15% of clostridium butyricum and 10-15% of bifidobacteria. The restoration agent has the advantages of strongly decomposing the bottom mud, improving the bottom environment of an aquaculture water body, promoting healthy growth of beneficial microorganisms and aquatic animals and plants in the water body and improving the water quality of the water body. The invention further provides a preparation method of an efficient ecological restoration bag for the bottom mud.

The present invention relates to a kind of polyester FDY hot melt fiber and preparation method thereof, with phthalic acid (terephthalic acid and isophthalic acid), ethylene glycol, diethylene glycol, glass transition temperature regulator ( Formic acid sulfonate), macromolecular modulus regulator (fatty acid ester or long-chain diol with carbon number greater than or equal to 5) and zinc oxide as reaction raw materials to prepare low-melting point polyester, and spin it according to FDY process Obtain polyester FDY hot-melt fiber. The obtained polyester FDY hot-melt fiber is made of low-melting point polyester, and the molecular chain of low-melting point polyester is composed of phthalic acid segment, ethylene glycol segment, diethylene glycol segment, and glass transition temperature regulator chain. Segment and macromolecular modulus regulator chain segment composition; A kind of preparation method of polyester FDY hot-melt fiber of the present invention reduces the impact of hydrogen sulfide in the polymerization process on polyester hot-melt fiber and reduces the initial modulus of fiber While avoiding fiber adhesion, the method is simple and the fiber application range is wide.

The invention provides a method for using the pond bottom mud water at an early stage of aquaculture. The method is characterized by mainly comprising a pond (1), a foam box (2), a wooden row (3), a wooden pile (4), a rope (5), a woven bag (6), an angle iron (7), a first steel bar ring (8), a steel bar (9), a second steel bar ring (10), a processing barrel (11), a handle (12), a steel grille (13),an open bottom (14), a handle (15), a collecting bucket (16), a sealed bottom ( 17), a handle bar (18) and an elliptical head (19). The method is advantaged in that the organic matter and the inorganic matter contained in the pond bottom mud are transformed into a nutrient salt which can be absorbed by the phytoplankton in the pool water through drying, powder mashing, oxidizing and decomposing so as to cultivate bait organisms in the pool water, no chemical fertilizers and no organic fertilizers are utilized, low carbon and environmental protection are realized, and healthy and efficient pond farming is realized.

The invention discloses a preparation method of fermented prawn compound feed. The present invention adopts the process of solid and liquid mixed fermentation, preferably produces rich enzymes and can co-grow Aspergillus niger, Bacillus subtilis, and Bacillus licheniformis for joint fermentation, and through aerobic and anaerobic two-step fermentation, fully develop Aspergillus niger and Bacillus licheniformis. The advantages of rich enzymes produced by Bacillus subtilis enable the comprehensive decomposition of basic fermentation raw materials, macromolecular proteins are decomposed into peptides and amino acids, cellulose is decomposed into fermentable sugars, starch is decomposed into fermentable glucose, and xylan is decomposed into Xylose, glucan, etc., so that the growth and reproduction of Lactobacillus reuteri in the anaerobic stage can obtain the support of a large number of nutrients. From indicators such as biological peptide content, L-lactic acid content, and number of colonies, it can be reflected that the growth and metabolism of microorganisms in the aerobic stage and anaerobic stage in the preparation method proposed by the present invention are very vigorous.