237results about How to "Increase dissolved oxygen concentration" patented technology

The invention provides a compound manual marsh system formed by the combination of surface flow and horizontal subsurface flow of a sunken plant type according to different oxygen dissolving environments and different oxygenizing effects of emergent aquatic plants, sunken plants, floating plants and other aquatic plants in the surface flow constructed wetland horizontal subsurface flow constructed wetland. Sunken plants are planted on a surface flow constructed wetland processing bed unit to increase the oxygen dissolving concentration of the unit and reinforce the nitrification of the unit, and the horizontal subsurface flow constructed wetland can easily form an anaerobic environment. The manual marsh environment of anaerobic and aerobic alternation can be formed by combining the two kinds of constructed wetlands together to be helpful for the step removal of nitrogen and phosphor.

The present invention is efficient ecological waste water treating apparatus and method. The apparatus consists of grit contacting oxidizing area, vertical upstream flow artificial wet land area, aerating jet area and horizontal flow artificial wet land area connected serially. The present invention has the advantages of composite medium in new recipe resulting in excellent phosphate and organic matter eliminating effect, the grit contacting oxidizing resulting in the long term stable running of the system, the composite of vertical upstream flow artificial wet land and horizontal flow artificial wet land resulting in raised effective volume and the aerating jet creating condition for aerobic degrading of organic matter.

The invention discloses a method for ecological restoration and water quality conservation of river water. according to the method, an aeration oxygenation system consists of a solar cell panel, a support connector, an air pump, an aeration tube and an air distribution plate and is used for maintaining the dissolved oxygen level in the water; an ecological floating bed system consists of a strong buoyancy carrier and an emergent aquatic plant and is used for removing pollutants out of water and gathering and transferring heavy metal; and a filler system is used for providing a lot of adhesion habitats for microbial flora, phytoplankton, protozoon and tiny metazoan so as to co-build and form a biological membrane which efficiently and quickly purifies the pollutants. By adopting the method, the organic matters such as COD, nitrogen, phosphorus and the like, and other pollutants in the water can be efficiently removed, the water is purified, an ecological system of the river way is improved, and the self-cleaning capacity of the water is restored.

The invention discloses a device for treating micro-electrolytic water. The invention, provides a micro-electrolyzing device by a fluidized bed, which has little filler consumption under an acid condition, little deposit generated in a subsequent neutralizing stage, non-block in a filler layer and little power consumption. The device comprises a bed body, an inlet pipe on a side where the bed body is close to an upper end, an outlet pipe on a side where the bed body is close to the upper end and is opposite to the inlet pipe, a porous support plate on a bottom of the filler in the bed body and an effluent weir on which top of the bed body is close to the outlet pipe. A clapboard is arranged in the middle of the bed body to divide the interior part of the bed body into two cavities, which are arranged as funnel structures respectively; two high-pressure tracheas are let in the bottom of the two cavities inside the bed body through outside the bed body respectively. The device allows the fine particle subsided at the bottom of the funnel in a fluidized state without soil hardening and can further generate micro-electrolysis reaction with the waste water, which at the same time reduces power consumption; the grate prevents impurity such as fiber to enter the device and avoids the filler loss.

The invention discloses a compound constructed wetland tail water treatment system, which belongs to the field of sewage treatment technology. The system mainly includes a pretreatment and a constructed wetland system. The pretreatment portion comprises an aeration oxidation pool and an ecological gravel bed; The constructed wetland system fuses a design of stabilization lagoon, which combines a vertical current constructed wetland and a surface flow constructed wetland, and a stabilization lagoon is arranged in step in series; the tail water to be treated passes the aeration oxidation pool, the ecological gravel bed, the vertical current constructed wetland, the stabilization lagoon in order, and finally passes the surface flow constructed wetland and flows out. The system combines physical, chemical and biological means organically, thereby effectively improving the tail water quality, and the water quality of water outlet basically reaches the surface water environment standard III grade, and the water outlet can directly returns to river ecological environment for supplementing water and can be used as city miscellaneous water; the invention has the advantages of low investment, simple operation, low energy consumption, high environment benefit and ecological benefit, etc.

The invention belongs to the field of sewage ecological treatment, and the purpose is to provide a device and a method for sewage decentralized treatment in circulating vertical flow constructed wetlands. The invention comprises the following aspects: 1) the high-efficient circulating vertical flow constructed wetland system comprises three main components of a vertical flow constructed wetland, a circulating water tank, and a reinforced adsorption column; 2) the operation modes comprise an intermittent mode and a continuous mode. Fillers of the constructed wetland are proportional compositions of several fillers which are low in price and high in adsorption capacities for nitrogen and phosphorus; plants which have strong durability against pollution and have landscape value (thalia dealbata or day lily) or economic value (hybrid pennisetum) are planted on the wetland surface. The invention adopts the high-efficient filler composition to reinforce nitrogen and phosphorus adsorption; effluent backflow increases the dissolved oxygen inside the vertical flow constructed wetland, and enhances the nitration capability of microbes in the wetland; the denitrification capability is enhanced; the contact time of sewage and the fillers is increased; and the removal of phosphorus is enhanced. Series-parallel combinations can be selected flexibly with respect to different sewage types, and the applicability is strong.

The invention discloses a water treatment process by combining an air floatation tank with a biofilter and relates to a water treatment process. The aim of the invention is to organically combine the air floatation with the biofilter to reach the comprehensive improvement of the water quality of the treated water. The process provided by the invention comprises the following steps that: (1) sewage water after pretreatment is introduced into an air flotation tank, and is subject to dephosphorization by the air flotation; simultaneously, a part of suspended substances are removed; (2) the sewage water is sent to the biofilter and subject to biological denitrification, and organisms and suspended substances of the sewage water are further removed; and (3) finally, effluent water is subject to disinfection treatment, wherein, the biofilter adopts a common biofilter, a high-load biofilter, a tower-type biofilter or an aerated biofilter. The process is suitable for a water body containing various organic pollutants, has low total energy consumption of aeration and high purification efficiency and can reach the first grade A emission standard and the aim of recycling.

The invention relates to a method for improving content of ganoderma triterpenes in ganoderma liquid deep fermentation mycelium, and the method is as follows: 1, taking a slant mycelium ganoderma strain, picking a sclertium for inoculating into a seed culture medium, after the inoculation, culturing for 7-14 days to obtain a seed culture liquid; 2, inoculating the cultured seed culture liquid into a fermentation medium according to the inoculum concentration of 5%-15%, after the inoculation, culturing for 3 to 10 days, adding 1vol%-5vol% of oleic acid in the fermentation culturing process to finally obtain ganoderma mycelium for further extract of the ganoderma triterpenes. The method has the advantages of being simple in process and effective, has application value in the industrial production, can successfully achieve significant improvement of yield of an expression product, shortens the fermentation cycle, improves the production efficiency, and has certain guidance and inspiration significance to optimize the fermentation process of other fungal mycelium.

The present invention relates to a microbial fuel cell water purification method, particularly to coupling of ecological floating islands and microbial fuel cells, wherein the method can be used for ecological restoration of contaminated river courses, lakes and parks, residential districts and other landscape water bodies, and belongs to the water body pollution remediation in environmental projects. According to the present invention, the black and odor river sediment or city sludge is adopted as the bottom matter, the carbon felt is adopted as the anode, and the graphite disc is adopted as the cathode to construct SMFC; floating-bed plants are introduced, and are planted on the overlying water body by using the floating body to form the floating-bed plant-sediment microbiological fuel cell (P-SMFC); with the combination of the floating-bed plant root system secretion characteristics, the root system secretions provide nutrients for the rhizospheric microorganisms; and the root system radially secretes oxygen to make the rhizospheric zone form a lot of aerobic zones, and the oxygen secreted by the plant root zone can spread to the SMFC cathode, such that the cathode region dissolved oxygen concentration is increased, and the restoration performance of the SMFC on the sediment pollution and the overlying water pollution are improved.

The invention provides a membrane aeration and membrane separation coupled sewage treatment device and method, wherein the hydrophobic membrane for aeration and the hydrophilic membrane for separation are mounted in a common cylinder shaped reactor, forming a membrane aeration and separation reactor, a bioreactor is also arranged on the reflux line, so as to realize circulatory flow of the treated sewage water between the two reactors, thus achieving the coupling of aeration, membrane separation and biological degradation.

The invention relates to a process for treating high-concentration pyridine waste water, which comprises the following steps of: regulating raw water of waste water to be acidic, and treating the raw water in electro-catalytic oxidation equipment; leading effluent to a micro-electrolysis device for treatment under the condition of maintaining the acidity and oxygen enrichment of the waste water; regulating the effluent to be meta-alkalescent, and adding chemicals to perform coagulating sedimentation; and controlling the salinity of the waste water to be below 2 percent, and performing biochemical treatment in an anaerobic hydrolyzing device and a pressurizing biological contact oxidation device, so that the effluent reaches the conventional first-level standards for sewage discharge. Due to the adoption of a physico-chemical treatment process serving electro-catalytic oxidation as a core, pyridine pollutants can be decomposed effectively, the toxicity of the waste water can be reduced, and the biodegradability of the waste water can be improved; for biochemical treatment is realized by a combination process of anaerobic hydrolysis and pressurizing biological contact oxidation, the organic loads, treatment efficiency and salt-tolerant capacity of the biochemical treatment are improved; and the process has the characteristics of high impact load resistant capacity, good treatment effect and low operating cost, and the treated high-concentration pyridine waste water can reach the standard stably before discharge.

The invention relates to improvement on an inverted umbrella-shaped aeration machine of a surface aeration apparatus for sewage treatment. The inverted umbrella-shaped aeration machine is characterized in that a rotary shaft is in a hollow structure, and at least the aeration is carried out in the water through an air distributing tube or a micropore aeration device in a terminal area, so that the inverted umbrella-shaped aeration machine is oxygenated by the swathed air generating whirl through rotation and oxygenates water by more air forcibly injected air, and the injected air is rotated through an impeller to stir and cut bubbles aerated into the water, particularly, the bubbles are cut through a sawtooth to ensure that the bubbles are finer to form micro-bubbles, thereby greatly improving the oxygenate capacity and the dissolved oxygen concentration of the inverted umbrella-shaped aeration machine and the deep oxygenation of the water body.

The invention discloses a treatment method for purifying sewage with a ladderlike integral ecological bed. Sewage flows through a three-step integral ecological bed to be treated as nitrification, denitrification, denitrogenation and oxygen enrichment and phosphorus removal, thereby ensuring the stability of the purified outlet water. A water inlet pipe of the ladderlike integral ecological bed is communicated with a perforated water-distributing pipe above the first grade integral ecological bed and a water-gathering weir between the second grade and the third grade of the integral ecological bed, and the sewage is distributed in a free overfall method; the bottom part of the first integral ecological bed is provided with a perforated water-collecting pipe which is communicated with the perforated water-distributing pipe of the second ecological bed; the bottom part of the second integral ecological bed is provided with a water-collecting pipe to guide the outlet water into the water-gathering weir, and the outlet hole of the water-gathering weir is communicated with the perforated water-distributing pipe above a third grade integral ecological bed which is provided with the perforated water-collecting pipe at the bottom part to be communicated with the water outlet pipe. Optimizing the bed structure and the water-distributing system, and adopting the technique of enforcing natural reoxygenation without energy consumption, the invention has the advantages of low cost and steady treatment effect.

The invention provides a high efficiency fluidization upward flow multilayer composite filter material biological filter tank coupled with ozonation and a water treatment method thereof, relating to a biological filter tank and a water treatment method using the biological filter tank. The biological filter tank is composed of an upper filter material, a medium filter material, a lower filter material and a supporting layer, wherein the upper filter material is active carbon, anthracite or biological ceramsite, the medium filter material is modified zeolite, natural zeolite or synthetic zeolite and the lower filter material is a phosphorus functional material. The filter tank is characterized by fast start, a complex and stable biological phase, great biomass, high activity, strong impact resistance, a filter material expansion rate of 0% to 50%, small resistance at the head of the filter tank, high mass transfer efficiency of materials, oxygen and pollutants, a high utilization rate of filter layers and filter materials and small possibility of occurrence of hardening of the filtering materials. The filter tank is applicable to treatment of raw water in which the concentration of water source phosphorus, ammonia nitrogen and organic pollutants fluctuates and can stably operate at a low temperature.

The invention relates to a manufacturing method of a netted catalyst for degrading the organic pollutant in wastewater by photocatalysis and a wastewater treating device. The manufacturing method comprises: using the wire net plated with nickel as a carrier, coating a catalyst for solidification, wherein the catalyst mixed liquid includes nano TiO2, acetone, epoxy resin, solidifying agent and appropriate plasticizer, soaking in the acetone solution. A case of the treatment device is provided with a plurality of independent deflecting chambers connected end-to-end in turn, two ends of which are provided with a water inlet and a water outlet. A plurality of solid netted bodies solidified with the catalyst are overlapped at intervals in the deflecting chamber. A through hole is opened in the middle of the solid netted body. An ultraviolet light source is inserted in the through hole. An aeration pipe is arranged on the bottom of the deflecting chamber. The device can deeply degrade the organic matter in wastewater.

A method for rapid elimination of water blackening and smell disclosed in the invention, comprises the following steps: pressurizing pure oxygen to 0.3 MPa or more, through a mixture, rapidly mixing the pressurized pure oxygen with the flow extracted from a body of water to be treated by an axial flow pump, so as to obtain high-concentration oxygen-dissolved water; arranging a plurality of rotarynozzles in the body of water to be treated, intensively mixing the high-concentration oxygen-dissolved water output by the mixture with the body of water to be treated through the rotary nozzles to allow the dissolved oxygen concentration of the body of water to be treated to reach more than 20mg / L. According to the invention, by utilizing the pressurization of pure oxygen and the combination of static pressure and dynamic pressure, the dissolved oxygen concentration of the body of water is increased rapidly. The invention has the advantages of high efficient at absorbing oxygen, action fast,and effect long, with good application prospect.

The invention discloses a mobile bionic robot fish for water quality monitoring and oxygenation and a control method. The mobile bionic robot fish for water quality monitoring and oxygenation is characterized in that an underwater camera and an infrared sensor are arranged on a fish head structure of the bionic robot fish, a front water tank is arranged in the bionic robot fish, and pectoral finsare arranged on the left side and the right side of the fish head structure; the top of a fish body structure of the bionic robot fish is provided with an oxygenation pump and a wireless communicationmodule, the bottom of the fish body structure is provided with a water quality sensor, and the oxygenation pump is provided with a water inlet and a water outlet; a GPS module, a control center and arear water tank are arranged in the fish body structure; a fish tail structure of the bionic robot fish comprises a tail fin and soft rubber, wherein the fish body structure is connected with the movable tail fin through the soft rubber; and a motor, an eccentric wheel and a connecting rod device are arranged in the fish tail structure, and the connecting rod device penetrates through the tail fin. The mobile bionic robot fish for water quality monitoring and oxygenation has the advantages of being small in size, convenient to carry and capable of floating up and down in water and monitoringthe water quality parameter in a target water area in real time; and the mobile bionic robot fish can send an alarm to a user in software when a water quality parameter is lower than a set value, so that effective intelligent monitoring is achieved.

The invention relates to a method for breeding penaeus vannamei boone by using ozone water. Water inside a breeding pond is introduced from a natural sea area; after being subjected to sedimentation in the pond, dark sedimentation, treatment by a sand filtering tank and treatment by an ozone machine, the water is introduced into the breeding pond; during the period of breeding, the content of ozone in the water inside the breeding pond is regularly detected so as to be maintained 0.2-0.5ml / L. According to the method, the body immunity of the penaeus vannamei boone can be improved, and the possibility of disease outbreak to the penaeus vannamei boone is decreased; the growth speed of the penaeus vannamei boone is guaranteed, so that the economic benefits of farmers are protected; ozone is used as a sterilizing and harm-elimination substance safely, reliably and efficiently; oxygen atoms with a strong oxidizing performance, decomposed from the ozone, can reach a disinfecting purpose; moreover, the other product, i.e. oxygen, decomposed from the ozone, not only is safe without causing pollution to the water, but also can increase the concentration of dissolved oxygen in the water, thus being beneficial to growing and surviving the penaeus vannamei boone.

The invention discloses a method for synchronously removing high-concentration ammonia nitrogen, iron and manganese in water through efficient catalytic oxidation. The method adopts a system consisting of a catalytic oxidation filtration system, a reverse flow oxygenation system and a back washing system, the trace oxygenation is implemented at the medium-lower part of catalytic oxidation filtering layers to guarantee that each filtering layer contains sufficient dissolved oxygen, and the catalytic oxidation capabilities of all the filtering layers are given into full play, so that the high-concentration ammonia nitrogen, iron and manganese in water are synchronously removed through catalytic oxidation; and besides, the bottom filtering layer gives full play of the function of guaranteeing filtering. The method has the advantages that the removal efficiency is high, the impact-resistant load is high, the project investment is less, the running cost is low, and the implementation difficulty is small. The method is suitable for the new construction and upgrading transformation of both surface water treatment plants and underground water treatment plants.

The invention discloses a method for quickly starting a shortcut nitrification reactor. The method comprises the following steps: after performing inoculation on the reactor, firstly performing overaeration, and applying an aeration impact so as to accelerate the elimination of anaerobic bacteria in sludge; quickly enriching nitrifying bacteria, and then applying a combined load impact comprising a substrate concentration impact and a hydraulic retention time impact so as to quickly restrain and eliminate nitrite oxidizing bacteria; finally, under the condition that an appropriate substrate concentration and an appropriate hydraulic retention time are maintained, increasing the concentration of an inorganic carbon source so as to enrich ammonia oxidizing bacteria and accelerate the accumulation of nitrite. According to the invention, the various continuous impacts are combined, the enrichment of the ammonia oxidizing bacteria in the sludge is accelerated within a shorter time, and the quick start of the shortcut nitrification reactor is realized.

An ecological pond effluent deep treatment device comprises a drum grille machine; effluent is sprayed into the bottom in an ecological pond through a necking-down water inlet pipe; the effluent of the ecological pond goes into a turbulent-flow nano aeration backflushing screen filter pool; the effluent treated by the turbulent-flow nano aeration backflushing screen filter pool automatically flows into a nano aeration ablation device; the bottom of the nano aeration ablation device is provided with a mud discharge port; a part, above the mud discharge port, of the interior of the nano aeration ablation device is provided with a nano aeration disc; the nano aeration disc is connected with a nano O3 aerator; the nano aeration ablation device is provided with a temperature control instrument, and the temperature control meter is connected with and controls a temperature sensing control head and a heating zone placed inside the nano aeration ablation device. The invention also discloses a method for wastewater treatment by using the device.

The invention discloses a method for treating closed water pollution. The method is realized in the manner of mounting at least one floater in a closed river and a fan on river bank. Each floater comprises an upper frame, a lower frame and a support frame; a plant floating island is arranged in the upper frame; flexible sheets are arranged on the outer lateral part of the support frame and the bottom of the lower frame; a plurality of water inlets are formed in the flexible sheet at the bottom; a water outlet is formed in the top of the flexible sheet on the lateral part; a hollow main pipe and a hollow branch are arranged on the lower frame; the hollow branch is connected with the hollow main pipe; the hollow main pipe is connected with the fan through a hose; an aeration hole is formed in the hollow branch; an upper restraining net and a lower restraining net are arranged at an interval along the vertical direction in a channel between the upper frame and the lower frame; a space between the upper restraining net and the lower restraining net is filled with a filling block. One or multiple parallel floaters can be arranged according to the size of the closed water. According to the invention, the purifying effect for the polluted water can be effectively promoted and the self-cleaning function for recovering water can be finally realized.

The invention relates to the technical field of electro-catalytic industrial wastewater treatment, in particular to a method for conducting dynamic three-dimensional electro-catalysis and purification on dyeing wastewater through nanometer microbubbles. The method comprises the steps that pretreatment such as sand filtration, pH value and electric conductivity adjusting and aeration treatment is conducted on the dyeing wastewater, the treated dyeing wastewater is added into an electrolytic tank taking a noble electrode as an anode and taking a stainless steel plate as a cathode, a certain amount of titanium sub-oxide particles is added, a nanometer microbubble aerating device is started for aeration, electro-catalytic oxidation treatment is conducted on the dyeing wastewater for 30 min to 2 h through energizing till the dyeing wastewater is completely decolored and decomposed, and titanium sub-oxide nanoparticles are separated and filtered out through a microfiltration head. According to the method for conducting dynamic three-dimensional electro-catalysis and purification on the dyeing wastewater through the nanometer microbubbles, the problems that in a traditional filled immobilized three-dimensional electrode, hydraulic exchange is insufficient, an electrode short-circuit current is too large, secondary contamination may be caused are eliminated, and positive significance on treating the dyeing wastewater is achieved.

Ozone washing water is produced by injecting an ozone gas into washing water which is filtrated water produced by filtrating untreated water through a membrane, is pressurized and can be used for backwashing, and then the ozone washing water is supplied to a membrane from a secondary filtration side to remove fouling substances present in the membrane and to generate ozone-containing bubbles on a primary filtration side to remove fouling substances present on the primary filtration side surface of the membrane.

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 discloses bacillus subtilis cultured by biochar and a preparation method and an application thereof. The preparation method takes biochar as an adsorption carrier, such as wood chips, animal bones, plant rhizomes and other biochar, takes any kind of bacillus subtilis strains as a starting strain, and successively comprises the following steps: (1) test tube expanding culture; (2) liquid shake flask culture; (3) seed tank expanding culture; (4) fermentation culture; and (5) drying. The bacterial density of the bacillus subtilis prepared by the method can reach 5*10<13>-1*10<15> cfu / mL. The biological adsorption and the liquid fermentation are in organic combination, the bacterial density of the liquid fermentation is improved, no any additional equipment is added, continuous culture and semi continuous culture are not used, and the high-density culture of the bacillus subtilis is achieved; and the cultured bacillus subtilis can be used as a live bacterial agent of a biofertilizer or used as a live bacterial agent of the biofertilizer with other strains.

This invention relates to a method for deeply treating wastewater. The method solves the problems of high concentrations of COD, phenols and ammonia nitrogen pollutants in treated water faced by present coking wastewater treatment method. The method comprises: (1) introducing coking wastewater into a flocculation pool, and adding chemical-biological composite flocculant; (2) pumping into a sand filtration column for treatment; (3) aerating, introducing into a fixed biological activated carbon reactor, reacting for 30-40 min, and discharging. A fixed biological activated carbon column is set in the fixed biological activated carbon reactor, on which are engineering bacteria. After treated by this invention, the wastewater contains reduced COD, phenols and ammonia nitrogen pollutants by more than 85%, 90% and 55%, respectively. Besides, this invention can operate in a long time, and has a stable effect with continuous operation of 90-150 days.

The invention provides a culture water quality regulating and controlling method of a penaeus vannamei boone freshwater pond. The culture water quality regulating and controlling method comprises the following steps in sequence: (1) carrying out anaerobic nitrification; (2) carrying out aerobic nitrification; (3) purifying photosynthetic bacteria; (4) carrying out microalgae cultivation and purification. Water pumped out from the freshwater pond for culturing penaeus vannamei boone is subjected to the anaerobic nitrification, the aerobic nitrification, the photosynthetic bacterium purification and the microalgae cultivation and purification in sequence, and then the water is reflowed back to the freshwater pond for culturing penaeus vannamei boone. According to the culture water quality regulating and controlling method, organic matters in the pond water can be decomposed into small molecular substances and the small molecular substances are cultured and absorbed by the photosynthetic bacteria and mixotrophic microalgae, and are converted into a microalgae organism; the treated and qualified water and cultured beneficial microalgae are discharged into the pond for cyclic utilization; after the beneficial microalgae enter the pond, population advantage is formed and a culture biological environment is improved; the water quality treatment effect is good, and a whole water treatment process does not utilize a culture water body and normal growth of the penaeus vannamei boone is not influenced; the method is high in operability and low in operation cost, and is safe and reliable to the cultured penaeus vannamei boone.

The invention relates to a preparation method of a composite bacterial agent of ammonia oxidation bacteria for removing ammonia nitrogen in sewage, and an application thereof, and belongs to the field of environmental biotechnology. The method mainly adopts activated sludge of a bioreactor for ammonia nitrogen waste water treatment as a main bacterial source to prepare the composite bacterial agent. The preparation method of the bacterial agent comprises the following steps: (1) adjusting the bioreactor for ammonia nitrogen waste water treatment to reach a process condition for high-efficient ammonia nitrogen removal, maintaining stable operation; (2) extracting part of sludge from activated sludge backflowed in a sludge sedimentation tank to obtain a composite microbial culture rich in ammonia oxidation bacteria; (3) mixing the composite microbial culture with biochar or zeolite powder carriers to prepare the bacterial agent; (4) wherein the bacterial agent is used for starting of a waste water treatment bioreactor, or enhancement of the removal efficiency of ammonia nitrogen in sewage. The composite bacterial agent of ammonia oxidation bacteria produced by the method has the characteristics of low production cost and good treatment effect, and reduces sludge discharge.

The invention discloses a mixed treatment process of feces and urine, and belongs to the field of feces and urine treatment. The treatment process comprises the following steps: 1) introducing feces and urine into a biochemical treatment tank for aerobic biological treatment, periodically adding a microbial bacterial liquid to the biochemical treatment tank, and simultaneously performing micro-nano aeration treatment; 2) introducing the treated water body in the step 1) into a sedimentation tank for solid-liquid separation; and 3) introducing the obtained supernatant liquid after treatment inthe step 2) into a deep treatment tank, introducing a small amount of ozone to generate a large amount of hydroxyl radicals by using a micro-nano aeration apparatus in the deep treatment tank, performing high-efficiency oxidation, and simultaneously performing micro-nano aeration treatment on the water body. The microbial bacterial liquid added in the step 1) comprises lactobacillus QV1, lactobacillus QV1 is deposited in the General Microbiology Center of the China Microbial Culture Collection Management Committee, and the preservation number is CGMCC No.16350. The treatment process has high treatment efficiency, and the discharge can meet the standard after two weeks of treatment.