157 results about "Ammonia n" patented technology

The invention relates to a micro-organism preparation for preventing and curing streptococcicosis of Tilapia mossambica as well as a preparation method and an application thereof. The micro-organism preparation method for preventing and curing streptococcicosis of Tilapia mossambica comprises steps of compounding mixed vaccine with red Nocardia ATCC11653 and coral Nocardia ACCC40100, fermenting and cultivating the mixed vaccine with fermentation medium which is compounded of nitrogen source, carbon source and inorganic salt, and processing resultants into solid powder after the fermentation and cultivation. The micro-organism preparation for preventing and curing streptococcicosis of Tilapia mossambica, which provided by the invention, can reduce the content of ammonia nitrogen and nitrate nitrogen in the Tilapia mossambica breeding water body, antagonize the streptococcicosis of the Tilapia mossambica, reduce the accumulation of harmful substances of the middle and later breeding periods, enhance the immunity of the Tilapia mossambica,, achieve the aim of preventing and curing streptococcicosis of Tilapia mossambica, reduce the economic loss caused by diseases, and ensure the breeding output and quality of the Tilapia mossambica. The micro-organism preparation provided by the invention has advantages of convenience in use, small amount of usage and stable effect after use.

The invention discloses a process for treating high-concentration nitrate and ammonia-nitrogen wastewater by using sludge fermentation liquor as a carbon source through series connection of short-cut denitrification and anaerobic ammonia oxidation, and belongs to the field of sewage treatment. The device comprises a sludge fermentation tank, a PD-SBR reactor, an AMX-SBR reactor and the like. The method comprises the following steps: the residual sludge is fermented under a medium-temperature alkaline anaerobic condition, and converting refractory organic matters into easily degradable organic matters; denitrifying bacteria perform short-cut denitrification by utilizing volatile fatty acid in the fermentation liquor, and nitrate is converted into nitrite; and effluent and high-ammonia-nitrogen wastewater enter an anaerobic ammonium oxidation film reactor together for autotrophic nitrogen removal, and the polyurethane sponge filler is used for holding anaerobic ammonium oxidation bacteria. According to the method, the aeration energy consumption is reduced, the sludge fermentation liquid is used as the external carbon source, a high-quality carbon source is provided for denitrification, sludge reduction is realized, the sludge treatment cost and the external carbon source addition cost are reduced, stable nitrite accumulation is realized by short-cut denitrification, and synchronous treatment of high-nitrate wastewater and high-ammonia-nitrogen wastewater is realized by combining anaerobic ammonia oxidation.

The invention belongs to the field of biological fermentation, and in particular relates to a necteromyces rattus and a method for treating high-ammonia-nitrogen biogas slurry by using the necteromyces rattus to produce single cell protein. The invention comprises the following specific technical scheme: the necteromyces rattus has a preservation number of CGMCC No.18371. The method of fermentingthe biogas slurry comprises the following steps: taking the biogas slurry, performing filtration to remove large-particle impurities, adding a carbon source, adjusting a carbon-to-nitrogen ratio to 6:1 to 10:1, and adjusting the pH to 5.5-7 to obtain a fermentation substrate; inoculating the fermentation substrate with the necteromyces rattus grown to a logarithmic stage, and performing fermentation at 20-30 DEG C; and after the fermentation is completed, performing centrifugation on the fermentation liquid, and drying the precipitate after centrifugation at 50-60 DEG C to a constant weight toobtain the required single cell protein. The method only needs a biological reaction to treat the biogas slurry, has a low running cost and convenient operation, has an excellent treatment effect onthe biogas slurry, and can provide high-economic-value products, thereby providing an integrated and economic solution for biogas slurry treatment.

The invention provides snakehead matching feed. The snakehead matching feed comprises, by weight, 43.50-45.50 parts of domestic fish meal, 0.35-0.37 part of aspartic acid, 1.28-1.45 parts of fish oil. 1.48-1.79 parts of peanut oil, 6.4-6.60 parts of corn, 7.90-8.10 parts of bean pulp, 6.60-8.60 parts of cottonseed meal, 5.80-10.80 parts of rapeseed meal, 3.50-6.50 parts of peanut meal, 0.94-0.96 part of vitamin premix, 10.50-14.50 parts of wheat bran, 24.50-28.50 parts of wheat middling, 2.54-2.56 parts of bentonite, 0.4-0.6 part of sodium alginate, 1.70-1.90 parts of mineral salt premix and 1.10-1.30 parts of gamma-aminobutyric acid. It is shown by experiments that growth and metabolism of snakeheads can be promoted, the feed utilization rate is increased, and the acute ammonia nitrogen stress ability is improved.

The invention discloses a compound water purifying agent used for aquaculture. The compound water purifying agent is prepared by mixing microorganism bacterium powder with a physical and chemical reagent in a mass ratio of (1-3) to 1, wherein the microorganism bacterium powder is prepared by mixing bacillus subtilis B7348 with ammonia nitrogen degrading capacity, bacillus subtilis N9-1-35 with ammonia nitrogen degrading capacity, bacillus cereus with acid production capacity and bacillus subtilis BLS1 with algae lysing capacity; the number of viable bacteria in the microorganism bacterium powder obtained after mixing is more than or equal to 10<8>cfu / g; the physical and chemical reagent is prepared by mixing zeolite powder, sodium thiosulfate and aluminium potassium sulfate in a mass ratio of (3-5) to (2-4) to (1-3). The compound water purifying agent has good water purifying effects, is low in use cost, is safe and effective and can meet the requirements of mass aquaculture farmers.

The invention relates to a non-ammonia molybdenum precipitation method for sodium-modifying vanadium-rich liquor. The non-ammonia molybdenum precipitation method comprises the following steps: 1) regulating the pH value of the sodium-modifying vanadium-rich liquor with sulfuric acid, and adding calcium chloride and an aluminum sulfate solution to purify, remove silicon, remove phosphine and filter; 2) regulating the pH value of the obtained purified filtrate with the sulfuric acid, adding the sulfuric acid, introducing CO2 under a stirring condition, adding certain polymer polyvanadic acid asseed crystal, heating to a temperature of 90 DEG C or higher, and preserving the heat for 1-2 hours until molybdenum precipitation is complete, and filtering; 3) adding an acidic ammonium sulfate solution into obtained filter residues, introducing CO2 under the stirring condition, and heating up to a boiling point for sodium removal and filtration, adding lime to treat and filter by supplementingammonium sulfate into filtrate to circulate by certain times, returning filtrate to a fine vanadium burning furnace, and spraying and absorbing ammonia gas released by fine vanadium burning, and recycling produced ammonium sulfate for sodium removal of polymer polyvanadic acid; and 4) washing the filter residues with a sulfuric acid aqueous solution and clear water to further produce vanadium pentoxide. The non-ammonia molybdenum precipitation method has the beneficial effects of solving emission of ammonia nitrogen wastewater from the source, and being environmentally friendly.