42results about How to "Promote domestication" patented technology

The invention provides a method for preparing a macroreticular polyvinyl alcohol foam carrier, which comprises the steps: polyvinyl alcohol, limestone and water are mixed and stirred to lead the polyvinyl alcohol to be fully and evenly dissolved; the mixture is added with dilute hydrochloric acid for acidification and is frothed to have foramen; by adopting the circulation of freezing-unfreezing, and refreezing-unfreezing again, macroreticular polyvinyl alcohol gel foam is formed; then, the polyvinyl alcohol gel foam is cut into pieces and is dipped into the dilute hydrochloric acid with the mass concentration of 0.5-1% until no bubble is generated; the polyvinyl alcohol is caused to form more stable cross-linked structure by chemical crosslinking reaction; after that, the polyvinyl alcohol is soaked in water to be washed to be neutrality, so that the white macroreticular polyvinyl alcohol foam carrier is obtained. The macroreticular polyvinyl alcohol foam carrier prepared by the invention has stable macroreticular structure, takes on good hydrophilicity, physical and chemical durability as well as biological degradability resistance, is applicable to immobilized enzyme and microorganism to form a bioreactor with multiple bed types, and can be used in the fields of modern biological engineering such as sewage disposal, etc.

The invention relates to wine making techniques and in particular relates to highland barley wine with a whisky flavor and a preparation process thereof. The highland barley wine with a whisky flavor is characterized by being made from Plateau crops ('Black crow' and sky blue highland barley) in high-attitude areas in high Qinghai-Tibet Plateau by process steps of fermentation distillation, oak barrel aging and blending according to a wine making technique combining granite slab cellar solid-state saccharification with a liquid-state fermentation process, thus obtaining the highland barley wine with whisky flavor. Adopted QK6 yeast can generate good-flavor substances, the contents of all the generated total acid, total acetate and total ethyl ester are high, the flavor complexity of the raw highland barley wine is improved, and the highland barley wine has unique product characteristics in terms of fragrance, flavor and style. The highland barley wine with whisky flavor is clear and transparent, is pale yellow to golden yellow, is free of suspended solids and sediment, has harmonious and strong aromatic odor endowed by cereal and oak barrels and is elegant and fine; the body of the highland barley wine is plump, pure, mild and sweet and has aromatic odor endowed by cereal and oak barrels.

The invention discloses an artificial compound feed for perca fluviatilis. The artificial compound feed comprises the following components in percentage by weight: 8.0 to 51.5 percent of fish meal, 1.00 percent of fish oil, 1.00 percent of corn oil, 0.24 percent of choline chloride, 1.1 percent of vitamin premix, 1.9 percent of inorganic salt premix, 0.55 percent of calcium dihydrogen phosphate, 0.18 percent of lysine, 0.45 percent of methionine, 8.2 to 15.46 percent of bran, 21.2 to 26.6 percent of wheat middling, 6.01 to 12.82 percent of rapeseed dregs, 0.88 to 2.65 percent of globin powder, 14.87 to 16.79 percent of bean pulp, 10.23 to 12.47 percent of cottonseed pulp and 2.5 to 5.8 percent of yeast; and the components are puffed into a floating granular feed by a conventional method. The invention also discloses a perca fluviatilis feeding method. According to a culture mode of mainly feeding the perca fluviatilis and matching carp, bighead carp, silver carp, tincaeus, grass carp and pelteobagrus fulvidraco Richardson, the perca fluviatilis can be completely domesticated to take the compound feed in 7 to 15 days by adopting the compound feed and a unique intake domesticating method; the feed problem is solved, the water layer and the bait resource of a culture water area are fully utilized, and the growth speed and the yield of the perca fluviatilis are improved; and the compound feed can be used for large-scale culture of the perca fluviatilis.

The invention discloses a ricefield eel culture method. In two years when a young ricefield eel is cultured into an adult ricefield eel, a cement pit culture method is used in the first year, and a net cage reed culture method is used in the second year. Each young ricefield eel is caught in the wild with the weight of 60-90g, and the weight of each adult ricefield eel is 160-210g. The ricefield eel is cultured in a cement pit from May to September, is moved to be cultured in a net cage in February to March in the first year and is sold as the adult ricefield eel in November to December the next year. The cement pit consists of a plurality of small pits with the width of 4 meters, the depth of 0.9 meter and the length of 5-6 meters, a drainage sign and a water inlet sign are respectively arranged on one edge of a pool to form an opposite angle, a drainage pipe hole is provided with an escape-prevention net, and the pool wall is covered with one layer of plastic film. According to the ricefield eel culture method disclosed by the invention, the cement pit culture is carried out in the first year so as to bring convenience for observing the eating and moving situation of the ricefield eel, and acclimatization is better. The ricefield eel cultured in the cement pit has the advantages of proper size, good freshness and good oxygen dissolving performance, and only water needs to be supplemented in fixed time. If the young ricefield eel is successfully acclimatized in the cement pit, the young ricefield eel can quickly adapt and eat when being moved to the net cage, the growth period is prolonged, and the weight increment ratio is big.

The invention discloses an ecological tea garden duck breeding method. The method is a new breeding method combining the dry duck breeding technology and the tea garden management technology. Compared with the prior art, due to the fact that the dry breeding technology is adopted, the cost for digging a pond is saved, and restriction for digging the pond is avoided; meanwhile, due to the fact that ducks are easy to domesticate, the ducks can form conditioned reflex in a short time, the ducks pass through an S-shaped passageway under attraction of whistle or bell, the moving path spreads all over a tea garden, and the control effect on insets and weeds is even.

The invention discloses a method for artificially breeding porcupines. A field is built in a forest hill sloping field which faces south, and is good in ventilation, high in quality of a water source, good in water drainage and free of pollution. A feeding pond is built on one side of a pigpen, and a residue discharge opening is built in the other side of the pigpen. At the piglet stage of the porcupines, the porcupines start to be fed with feed 14-16 days after being borne, the porcupines are weaned 22-28 days later, the porcupines enter the fattening stage 60 days later, and the porcupines are mature 8-10 months later. The porcupines are domesticated after being weaned to gradually adapt to the artificial breeding environment. The temperature of the pigpen is controlled; the feeding frequency every day is fixed; strict disinfection is carried out; regular cleaning is carried out, garbage and excrement are cleared away in time, and the safe and healthy environment of the pigpen is kept. The method for artificially breeding the porcupines is beneficial to growth, development and domestication of the porcupines, Chinese herbal medicine is added into the feed, diseases are effectively prevented, management is convenient, economic losses are reduced, the meat of the porcupines is high in quality, and economic benefits are increased.

The present invention provides a transitory feed for weaning lambs. The transitory feed consists of the following raw materials in parts by weight: 300 parts of corns, 185 parts of 43% of soybean meal, 170 parts of corn bran, 80 parts of wheat middlings, 30 parts of 46% of peanut meal, 40 parts of 26% of DDGS feed, 12 parts of stone powder, 10 parts of bentonite, 15 parts of calcium hydrophosphate, 5 parts of soybean oil, 5 parts of edible salt, 6 parts of lee liquid dry matters, 1.2 parts of attractant, 3 parts of piglet multi-vitamins, 1.2 parts of ferrous sulfate monohydrate, 0.4 part of copper sulfate pentahydrate, 1.1 parts of manganese sulfate monohydrate, 1.2 parts of zinc oxide, 0.6 part of 1% of iodine, 0.12 part of 1% of selenium, 0.003 part of cobalt chloride monohydrate, 2.7 parts of monensin, 30 parts of baking soda, 30 parts of lysine and 25.3 parts of zeolite powder. The transitory feed for the weaning lambs can induce lambs' feeding desires, is convenient for domesticating the lambs, and shortens the weaning cycle of the lambs in the initial consumption of the lambs for the feed, and can ensure adequate nutrition intake of the lambs, improve lamb's resistance and decrease the illness probability of the lambs during the weaning period.

The invention discloses a hybrid breeding method of lutmria maxima jonas and Lutraria philippinarum. The lutmria maxima jonas grows rapidly and is high in price, but cultivation is affected by bottom tide, storm and diseases, and annual fluctuation of the output is large. The breeding mode for Lutraria philippinarum is simpleand economic effect is obvious, but the disease resistance of the young Lutraria philippinarum is poor, and it is difficult to artificially breed. The method comprises the steps of: carrying out interspecific hybridization according to the situation that lutmria maxima jonas and Lutraria philippinarum are geographically isolated and different in reproductive biology characteristics, and breeding filial generation with merits such as strong disease resistance and fast growth speed. According to the invention, the measures such as purchasing and transporting of parent shellfish, domesticating of the parent shellfish, artificial fertilization and hybridization, incubation and superior varity selection, cultivation of planktonic larvae, larval metamorphosis, juvenile mollusk cultivation and intermediate cultivation in a sear area are adopted. The hybrid breeding method is scientific and reasonable in technological process and strong in maneuverability, and hybridization of two types of geographically isolated clams belonging to Lutraria is achieved. The method disclosed by the invention is fewer in occupied resources and low in cost, and natural resources are fully utilized.

The invention discloses a wild purslane planting method. The wild purslane planting method is characterized by comprising the following steps that 1, pre-sprouting is performed at constant temperature, and preprocessed seeds are put in an incubator to perform pre-sprouting processing; 2, at an acclimatization and seedling raising stage, the seeds are put in a full-shade environment, the ratio of lighting to non-lighting time, lighting intensity and temperature are regulated at different growth stages, acclimatization and seedling raising are conducted on wild purslane seeds, and seedling raising from seeds is performed at the bottom of a cultivation box by using nutrient soil; 3, young seedlings are planted, organic fertilizers are applied to soil according to the mass proportion to promote growth of purslanes.

The invention discloses an aquatic seedling domesticator and application thereof. The aquatic seedling domesticator comprises a water tank, an automatic water feeding device arranged on the water tank, a stirring device, a drainage and pollution discharge device, a feeding and bait discharging device, phototaxis training devices and an anti-overflow drainage device, wherein the automatic water feeding device is connected with a water inlet pipe, water is added into the water tank, the stirring device is arranged in the middle of the water tank, the drainage and pollution discharge device is arranged at the lower end of the water tank, the feeding and bait discharging device is movably arranged on an upper top plate of the water tank, the phototaxis training devices are symmetrically arranged on the side walls of the two ends of the water tank in the length direction, and the anti-overflow drainage device is arranged on the side wall of the water tank in the width direction and communicates with a water outlet pipe of the drainage and pollution discharge device. When the aquatic seedling domesticator is used, seedling phototaxis clustering training can be carried out through light conversion, material training is facilitated, the survival rate after seedling throwing can be effectively guaranteed, aquatic seedlings can be well domesticated through the aquatic seedling domesticator, and the aquatic seedling domesticator has the advantages of being easy and convenient to use and facilitates domestication.

The invention discloses a microorganism domestication and culture device for treating polluted water quality, which comprises a base, wherein a culture device for culturing environmental microorganisms is arranged on the base, and a switching device for placing a microorganism culture dish subjected to domestication into the culture device is arranged at the middle end of the base. A domestication device for domesticating microorganisms is arranged on the base, a placement barrel is arranged at the upper end of the domestication device, and substances which need to be added when the microorganisms are domesticated are canned in the barrel. According to the domestication device, when the domestication device drives the culture dishes to rotate to the position below the placing barrel for one time for performing stirring in the culture dish, so that the domestication efficiency is improved, and the domestication device sends out the domesticated culture dishes so that the transfer device can stably transfer the culture dishes for culture.

The invention relates to a method for integrally treating VOCs (Volatile Organic Chemicals)-containing waste gas by a biofilter. The method comprises the following steps: (1) mixing volcanic, activated carbon, decomposed mushroom residue and active mushroom residue, thus preparing composite filler; (2) piling and charging the composite filler onto a porous plate in the biofilter, thus forming a composite filler layer; (3) humidifying fresh air, introducing the humidified air into the biofilter, operating for 48 to 60 hours under the condition of room temperature, and completing starting; (4) humidifying the VOCs-containing waste gas, introducing the humidified VOCs-containing waste gas into the biofilter, operating for 14 to 16 hours under the condition of the room temperature, and completing acclimation; regulating the gas residence time to be 8 to 12 seconds, and continuously operating. The composite filler used in the method is not liable to collapse and compact, is long in replacement period and has good buffer ability and high stability; during treatment of the VOCs-containing waste gas, starting and acclimating periods are short, a nutrient solution requires not to be additionally inoculated and supplemented, the removal effect is good, the cost is low, the operation and maintenance are simple and convenient, and good economic benefit and good environmental benefit are obtained.

The invention discloses an aspergillus oryzae functional enzyme preparation and application thereof, and belongs to the technical field of white wine brewing. The aspergillus oryzae functional enzyme preparation is prepared by performing solid state fermentation and drying on an aspergillus oryzae strain. In the white wine brewing process, the aspergillus oryzae functional enzyme preparation is additionally added into cooked and gelatinized main raw materials to be fermented. As the aspergillus oryzae functional enzyme preparation is added to ferment the raw materials, the process is simple and controllable, the wine yield and the high-quality rate of white wine can be effectively increased, the quality of the white wine is improved, and social and economic benefits are achieved.

The invention relates to a continuous flow rising type aerobic granular sludge reactor. The aerobic granular sludge reactor comprises a water tank (1), a peristaltic pump (2), an AGSB device (3), a three-phase separator (4), a pressure-controlled water-sealed tank (5), an air blower (7) and an aeration disc (8), wherein to-be-treated sewage is introduced into a water tank (1) and is input into theAGSB device (3) through the peristaltic pump (2), aerobic granular sludge is contained in the AGSB device (3), the three-phase separator (4) is arranged at the top of the AGSB device (3) and is connected with the pressure-controlled water-sealed tank (5), and the air blower (7) is connected with the aeration disc (8) at the bottom in the AGSB device (3). Compared with the prior art, the aerobic granular sludge reactor has the advantages that the design is simple, the cost is low, and the phosphorus and nitrogen are simultaneously removed.

The invention relates to a small aerobic bacteria culture device and an aerobic bacteria culture method. The small aerobic bacteria culture device comprises a heat preservation water tank, a liquid storage bottle, a breather pipe, an exhaust pipe, a liquid injection pipe, an injector, a temperature controller, a temperature measuring probe and a heating probe, the liquid storage bottle is placed in the heat preservation water tank, a bottle plug is arranged in the opening of the liquid storage bottle, and the breather pipe, the exhaust pipe and the liquid injection pipe sequentially penetratethrough the bottle plug to extend into the liquid storage bottle; the breather pipe extends into the bottom of the liquid storage bottle; the exhaust pipe extends to the position above the liquid level of liquid in the liquid storage bottle; the liquid injection pipe extends into the position below the liquid level of the liquid in the liquid storage bottle; and the temperature controller is arranged on one side of the heat preservation water tank, the temperature controller is connected with the temperature measuring probe and the heating probe, and the temperature measuring probe and the heating probe penetrate through the side wall of the heat preservation water tank into the heat preservation water tank. The advantages that the cost is low, simpleness, convenience and practicability are achieved, and the culture environment can be controlled are achieved. According to the small aerobic bacteria culture device and the aerobic bacteria culture method, normal growth of biochemical bacteria is guaranteed through a nutrient solution and an activating agent, the acclimation time of aerobic bacteria is shortened, and the biochemical processing efficiency is improved.

The invention relates to a method for integrally treating a malodorous gas by a biofilter. The method comprises the following steps: (1) mixing volcanic, activated carbon, decomposed mushroom residueand limestone, thus preparing composite filler; (2) piling and charging the composite filler onto a porous plate in the biofilter, thus forming a composite filler layer; (3) humidifying fresh air, introducing the humidified air into the biofilter, operating for 48 to 60 hours under the condition of room temperature, and completing starting; (4) humidifying the malodorous gas, introducing the humidified malodorous gas into the biofilter, operating for 10 to 12 hours under the condition of the room temperature, and completing acclimation; regulating the gas residence time to be 14 to 18 seconds,and continuously operating. The composite filler used in the method is not liable to collapse and compact, is long in replacement period and has good buffer ability and high stability; during treatment of the malodorous gas, starting and acclimating periods are short, a nutrient solution requires not to be additionally inoculated and supplemented, the removal effect on H2S and NH3 is good, the cost is low, the operation and maintenance are simple and convenient, and good economic benefit and good environmental benefit are obtained.

The invention relates to an artificial hybrid perch and a breeding method thereof. The breeding method comprises the steps that first parent selection, parent cultivation and artificial hybridization are carried out; the first parent selection comprises selection of a first female parent and selection of a first male parent; the parent breeding comprises the step of correspondingly breeding the first female parent and the first male parent to obtain a second female parent and a second male parent; the artificial hybridization refers to artificial hybridization of the second female parent and the second male parent; female Taiwan perch is used as a first female parent; and male micropterus salmonides obtained after second-generation breeding and screening are carried out by adopting group breeding and taking body weight as a main breeding target is used as a first male parent. According to the artificial hybrid perch and the breeding method thereof, the female Taiwan perches and the male superior perches are hybridized for the first time to obtain the artificial hybridized perches, and the hybridized perches grow fast, are high in survival rate and easy to domesticate after being industrially cultivated for one month and can serve as a novel high-quality variety in the micropterus salmoides industry.

The invention relates to the technical field of wild boar breeding, in particular to an artificial domestication method of wild boars. The method comprises the steps of breeding environment control, hygiene and epidemic prevention and feeding. A breeding environment comprises an inner ring and an outer ring, the inner ring is required to be dark and soundproof so that the wild boars can conveniently have a rest, and the outer ring is required to be bright and spacious to be suitable for the wild boars to conveniently move. Hygiene and epidemic prevention includes the steps that an insect repellant is used for repelling insects on the wild boars, and a vaccine is given to each wild boar in the first seven days of wild boar domestication. Feeding includes the step that coarse fodder is usedfor feeding the wild boars in the first week, so that the eating habit of the wild boars is consistent with that in the wild. The artificial domestication method of the wild boars is simple and convenient to use, the survival rate of the wild boars domesticated through the method is 100%, the disability rate is 10%, the morbidity rate is 6.67%, the mating rate is 100%, and the method has importantsignificance in promoting development of the special wild boar market industry.

The invention discloses a biological powdered activated carbon purification method for a water supply plant. The method is carried by using a set of water treatment circulation system, wherein the circulation system is composed of a biological powdered carbon adsorption pool, a powdered carbon separation pool and a biological powdered carbon degradation pool; the purification method comprises the following steps: step 1, conveying water to be purified into the biological powdered carbon adsorption pool, and fully enabling the biological powdered carbon to be in complete contact with the water purification; step 2, separating the purified water from the biological powdered carbon by using the powdered carbon separation pool; step 3, discharging high-concentration powdered carbon mud discharged from the powdered carbon separation pool into the biological powdered carbon degradation pool for biodegradation of organic pollutants, blowing oxygen until a ratio of gas to water is (0.5-5): 1; and step 4, mixing the degraded biological powdered carbon with water to be purified, and then entering the biological powdered carbon adsorption pool for continuing the adsorption. The purification method provided by the invention is high in treatment efficiency, good in purification effect, reusable in biological powdered activated carbon, and low in energy consumption, and can be widely applied to the deep treatment of water after sedimentation of silts of the water supply plant.

The invention discloses an artificial compound feed for perca fluviatilis. The artificial compound feed comprises the following components in percentage by weight: 8.0 to 51.5 percent of fish meal, 1.00 percent of fish oil, 1.00 percent of corn oil, 0.24 percent of choline chloride, 1.1 percent of vitamin premix, 1.9 percent of inorganic salt premix, 0.55 percent of calcium dihydrogen phosphate, 0.18 percent of lysine, 0.45 percent of methionine, 8.2 to 15.46 percent of bran, 21.2 to 26.6 percent of wheat middling, 6.01 to 12.82 percent of rapeseed dregs, 0.88 to 2.65 percent of globin powder, 14.87 to 16.79 percent of bean pulp, 10.23 to 12.47 percent of cottonseed pulp and 2.5 to 5.8 percent of yeast; and the components are puffed into a floating granular feed by a conventional method. The invention also discloses a perca fluviatilis feeding method. According to a culture mode of mainly feeding the perca fluviatilis and matching carp, bighead carp, silver carp, tincaeus, grass carp and pelteobagrus fulvidraco Richardson, the perca fluviatilis can be completely domesticated to take the compound feed in 7 to 15 days by adopting the compound feed and a unique intake domesticating method; the feed problem is solved, the water layer and the bait resource of a culture water area are fully utilized, and the growth speed and the yield of the perca fluviatilis are improved; and the compound feed can be used for large-scale culture of the perca fluviatilis.

The invention relates to a flat sheet membrane bioreactor which comprises an anaerobic pool, an aerobic pool and a membrane component which are sequentially connected, a water inlet is formed in the anaerobic pool, a stirring shaft is vertically arranged in the anaerobic pool, a plurality of stirring paddles are arranged on the stirring shaft at intervals, the lower end of the stirring shaft extends to the bottom part of the anaerobic pool, a plurality of sections of spiral channels are arranged on the inner wall of the anaerobic pool at intervals from top to bottom, each spiral channel is formed by encircling and splicing a plurality of spiral blades fixed on the inner wall of the anaerobic pool, each spiral channel is provided with a penetrating channel for holding the stirring paddle, a filter screen is coated at the periphery of the membrane component, the mesh number of the filter screen is 30-50, the bore diameter of the filter screen is 0.4-0.5mm, and a return passage is arranged between the anaerobic pool and the aerobic pool. The flat sheet membrane bioreactor is simple in structure and high in production rate.

The invention discloses a microbial domestication and cultivation device for controlling the problem of polluted water quality, which comprises a base, a cultivation device for cultivating environmental microorganisms is arranged on the base, and a microorganism culture dish that has completed the domestication step is placed in the cultivation device at the middle end In the transfer device, the base is provided with a domestication device for domestication of microorganisms, and the upper end of the installation of the domestication device is provided with a bucket, and the inside of the bucket is filled with substances that need to be added inwards for domestication of microorganisms. The domestication device provided in the present invention stirs the inside of the culture dish when it drives the culture dish to rotate once and puts it under the bucket, so as to improve the domestication efficiency, and the domestication device sends out the culture dish that has been domesticated so that the transfer device can stably transfer the culture dish for cultivation.

The invention discloses a laboratory fish pellet feed force feeding and domestication feeder, comprising a feeding device and a driving system, wherein the feeding device has a feeding area, and the feeding area is provided with a feeding port and an outlet. The feeding device further includes at least one feeding part, and the feeding part is movably installed in the feeding area, so that the pellet feed enters from the feeding port and passes through the feeding part. After being hit, it is thrown out from the material outlet; the driving system is used to drive the movement of the feeding part. In the technical solution provided by the present invention, by setting the driving system to drive the continuous movement of the feeding part, the pellet feed dropped near the feeding part can be hit to be thrown out from the discharge port, which is beneficial to the fish. The feeding habits are domesticated, and it helps to disperse the pelleted feed to improve the utilization rate of the pelleted feed.

The invention belongs to the technical field of plant tissue culture and particularly relates to a method for building a bamboo reed tissue culture system. The method comprises the steps of (1) explant disinfection, wherein axillary buds of bamboo reeds are fully soaked in 75% of ethanol for 10 seconds and then moved into 0.2% of mercury bichloride solution for 10 minutes; (2) primary culture, wherein a culture medium is formed by adding cane sugar 30g / L and agar 8g / L in MS, then adding 6-BA 5mg / L and IBA 0.5mg / L and finally adjusting potential of hydrogen (pH) to 5.8; (3) secondary culture, wherein a culture medium and culture conditions of the secondary culture are the same as the culture medium and culture conditions for the primary culture; (4) strong bud and root culture, wherein the buds are cultured in the secondary culture medium for one month to finish strong bud culture and then planted in a rooting culture medium, and the rooting culture medium is formed by adding IBA 0.5 mg / L into the MS; and (5) domestication and transplantation, wherein the domestication is performed by using a floating bed domestication system for one week and then transplantation is performed. By means of the method, the efficient breeding of the bamboo reeds can be achieved.

The invention relates to a flat membrane bioreactor. The flat membrane bioreactor comprises an anaerobic pool, an aerobiotic pool and a membrane component which are successively connected with each other, wherein a water inlet is arranged on the anaerobic pool; a stirring shaft is vertically arranged in the anaerobic pool; a plurality of stirring blades are arranged on the stirring shaft at intervals; the lower end of the stirring shaft extends to the bottom of the anaerobic pool; multiple sections of spiral channels are successively arranged on an inner wall of the anaerobic pool at intervals from top to bottom; each section of spiral channel is formed by surrounding and splicing a plurality of spiral blades fixed on the inner wall of the anaerobic pool; each section of spiral channel is equipped with a penetrating channel for accommodating the stirring blades; a filtering screen is wrapped on the periphery of the membrane component; the filtering screen is of 30-50 meshes; the aperture of the filtering screen is 0.4-0.5mm; a backflow pipeline is arranged between the anaerobic pool and the aerobiotic pool; a suspended filler fills the aerobiotic pool; an ultrasonic generator is arranged on the side wall of the aerobiotic pool. The flat membrane bioreactor has a simple structure and is high in production efficiency.

The invention provides an application of a substance regulating and controlling an OaGS3 gene to regulating and controlling the yield / grain length of tetraploid wild rice. The specific embodiment of the invention proves that the grain length can be increased by editing the gene OaGS3, so that the tetraploid wild rice with higher yield is bred, and domestication and utilization of the tetraploid wild rice are promoted.

The invention provides a system for accumulating nitrite nitrogen in a partial nitrification process. The system comprises a stirring type upflow reactor, a settling tank, a water quality monitoring device, an aeration device and an acid-alkali adjusting device, wherein the stirring type upflow reactor is a cylindrical reactor with a high-diameter ratio of 10 to 15, and a stirring device is arranged in the cylindrical reactor; the aeration device comprises a surface-layer aeration head and an air pump, the surface-layer aeration head is arranged at the top of the stirring type upflow reactor,and the air pump is connected with the surface-layer aeration head through an air pipe; and the water quality monitoring device comprises a pH probe, a dissolved oxygen probe, an oxidation-reduction potential probe and a digital water-quality analyzer, and the digital water-quality analyzer is electrically connected with each probe. The invention further provides a method for accumulating nitritenitrogen by virtue of the system. The system is simple in structure, low in input cost, simple and convenient to operate, high in process stability and suitable for being popularized and applied.

The invention discloses a tandem anaerobic ammonia oxidation process for room-temperature denitrification of high-ammonia wastewater, which comprises the following steps: 1) inoculating anaerobic ammonia oxidation granular sludge into two anaerobic ammonia oxidation reactors with different volumes; 2) with the nitrogen-containing wastewater as inlet water, operating the system at room temperature, wherein the hydraulic retention time of the large reactor is 0.57-7.69 h and the hydraulic retention time of the small reactor is 0.29-8.70 h; 3) adjusting the operation conditions of the reactors according to the concentration change conditions of ammonia nitrogen and nitrite nitrogen in effluent, so as to increase the loads of the two reactors to the maximum allowable values; 4) connecting two anaerobic ammonia oxidation reactors, which are lifted to the maximum load value, in series, and with nitrogen-containing wastewater as inlet water of a large reactor and outlet water of the large reactor as inlet water of a small reactor, operating the system at room temperature, the hydraulic retention time of the large reactor being 0.57 h and the hydraulic retention time of the small reactor being 0.29 h; and 5) adjusting the operation conditions of the reactor according to the concentration change conditions of ammonia nitrogen and nitrite nitrogen in the effluent, so that the ammonia nitrogen treatment capacity of the reactor on the wastewater is maximized.

The invention discloses a rapid domesticating and enriching method of alkali-resisting sulfur oxidizing bacteria used for biogas biological desulfurization. A sequencing batch reactor (SBR) and a continuous stirred tank reactor (CSTR) are used for domesticating and enriching the alkali-resisting sulfur oxidizing bacteria needed for biogas biological desulfurization. The method comprises the steps that firstly, secondary sludge from an urban sewage treatment plant is inoculated in the SBR and is domesticated under normal temperature and high-pH conditions, the concentration of sulfide is increased gradually, and sulfur oxidizing bacteria in the inoculated sludge are selectively domesticated and cultured; secondly, after the sludge is domesticated, operation of the SBR is changed to operation of the CSTR, the hydraulic retention time is shortened, the aeration quantity is increased, the concentration of sulfide is increased gradually, and the alkali-resisting sulfur oxidizing bacteria are successfully enriched; and finally, the aeration quantity is reduced, so that the surplus sludge in effluent is reduced while the operation cost is reduced. The method solves the problems that starting is slow and requirements for seed sludge are strict in a traditional direct continuous culturing mode, and effectively shortens the enriching time of the alkali-resisting sulfur oxidizing bacteria.