75results about How to "Regulate water quality" patented technology

The invention belongs to the technical field of ceramics, and particularly relates to an anion easy-cleaning functional ceramic additive and a preparation method thereof, a ceramic prepared by using the additive and a preparation method thereof. The additive is prepared from the following raw materials in percentage by mass: 10-16% of Chongguang stones with a particle size of 5-20 microns, 16-25% of tourmaline with a particle size of 5-15 microns, 5-15% of copper pectolite with a particle size of 5-20 microns, 8-12% of nano titanium dioxide, 6-8% of nano zinc oxide, 5-10% of lead-free frits, 7-20% of rare earth materials, 8-10% of superfine alumina, 8-15% of superfine quartz powder and 5-10% of sodium carbonate. The preparation method of the additive comprises the following steps of carrying out mixed ball-milling on the lead-free frits, the rare earth materials, the superfine alumina, the superfine quartz powder and the sodium carbonate firstly; and then, adding the Chongguang stones, the tourmaline, the copper pectolite, the nano titanium dioxide and the nano zinc oxide into the obtained product, and ball-milling the obtained mixture, so that the additive with a particle size of 1-10 microns is obtained. The additive disclosed by the invention has a self-polarizing performance, and has strong adsorption and decomposition functions, so that negative ions are produced; and after the additive is added into a ceramic, the ceramic is extremely easy to clean and not stained, and has no hidden dirt, therefore, the ceramic has a strong affinity to water.

The invention discloses an ecological comprehensive treatment system of a northern mountain river channel. The system comprises three sub ecological systems of an ecological permeable dike built on the upstream of a main stream and a branch stream of a mountain river, a reservoir pond arranged at the middle and downstream area of the mountain river and a wet land communicated with the reservoir pond, and adopts an ecological treatment mode of closure-storage-preservation. The construction method comprises the steps of: a) building of the ecological permeable dike; b) setting of a triangular pyramidal wood pile stone cage; c) building of the reservoir pond; d) planting of plants of the reservoir pond; e) building of a wet land system; and f) recovery of a river bank band. The system and the construction method can effectively intercept the mountain debris flow and the river non-point source pollution, adjust the river runoff, improve the hydrologic conditions of the mountain river in non-flood season, decrease the dry season of the mountain river, and facilitate to recover the ecological system of the mountain river. Meanwhile, traditional depressions and empty ponds in the mountain river can be used in construction, so that the engineering building cost is reduced, and the self-cleaning capacity of river water is improved.

The invention discloses a nutrient solution for antibacterial hydroponic culture flowers and a preparation method of the nutrient solution. The nutrient solution is prepared from the following raw materials in parts by weight: 25 to 35 parts of nano carbon sol, 20 to 25 parts of urea, 11 to 18 parts of beta cyclodextrin, 6 to 11 parts of boric acid, 10 to 15 parts of zinc sulfate, 8 to 15 parts of chitosan, 11 to 22 parts of peptone, 6 to 12 parts of itaconic acid, 8 to 11 parts of ferrous sulfate, 1 to 3 parts of composite vitamins, 3 to 5 parts of activated carbon, 4 to 9 parts of humic acid and 10 to 20 parts of cellulase. The nutrient solution prepared by adding streptomycin, phytohormone and an acidity conditioner into the nano carbon sol, urea, beta cyclodextrin, zinc sulfate and boric acid which serve as main raw materials is reasonable in formula; the preparation process is simple; the nutrient solution is scientific in formula and is safe and pollution-free; various required nutrient elements are supplied to growth of the flowers; the common phenomenon of lack of nutrition in the growing process of the distilled water cultured flowers is effectively avoided; the quality of the distilled water cultured flowers is improved; and bio-enzymes contained in the nutrient solution can effectively degrade organic acids secreted from roots of plants and rotten materials in distilled water.

The invention relates to a biofertilizer used for aquiculture pond and a preparation method thereof. The biofertilizer comprises the following components in parts by weigh: 100-200 parts of sodium humate, 100-200 parts of urea, 100-200 parts of calcium superphosphate, 100-200 parts of Bacillus subtilis and 200-600 parts of clinoptilolite powder; and the biofertilizer is prepared by mixing the above components. The biofertilizer can quickly act, adjust the water quality, and improve the substrate by reasonable formula; in addition to direct utilization by the aquatic organisms, the biofertilizer can combine with the hazardous materials in the water body substrate to detoxicate, and improve the metabolism of the algae at the same time, and increase the dissolved oxygen of the water body; and the preparation method is simple and is suitable for the requirement of large-scale industrial production.

The invention provides integrated sewage treatment equipment, which comprises an anoxic tank, an anaerobic tank, an aerobic tank, a sedimentation tank and a membrane reaction tank communicated sequentially from front to back, wherein an MBR membrane is arranged in the membrane reaction tank and communicated with an ultraviolet disinfector; aeration equipment is communicated with both the aerobic tank and the MBR membrane; an elastic filler is uniformly distributed in the anaerobic tank and an MBBR filler is arranged in the aerobic tank; a mixer is arranged in the anoxic pool, a carbon source adding device is communicated with the anoxic pool, and a medicine dosing barrel is communicated with the aerobic tank. Compared with the traditional sewage treatment device, the continuous aeration ofthe integrated sewage treatment equipment enables a moving bed in a flowing state and react more fully with the sewage, which greatly improves the treatment efficiency. The sedimentation tank is designed in front of the membrane reaction tank to separate the mud and water and remove the floating sludge, so that most of the mud is precipitated before entering the membrane area, thereby reducing the operating load of the MBR membrane, reducing the probability of fouling, delaying the service life of the membrane, also prolonging the backwashing cycle of the membrane and further ensuring the quality of the effluent.

The invention relates to a biochemical treatment method for improving polymer-containing sewage matrix of the oil field. Polymer-containing sewage is firstly added with a demulsifier and enters a demulsification buffer tank for demulsification, after a pH regulator is added to effluent of the demulsification buffer tank, the effluent enters a pH regulating tank and enters a floatation tank for floatation after pH is regulated, and a flocculant adding point is arranged at an inlet of the floatation tank; effluent of the floatation tank enters a filter, is filtered and then enters a water buffer tank, a compound biological nutritional agent is added, effluent of the water buffer tank sequentially enters an anaerobic tank and an aerobic tank for treatment and performs mud-water separation through a settling pond, a liquid supernatant of the settling pond is discharged after meeting the standard, a part of sludge at the bottom of the settling pond flows back to the front end of anaerobic tank, the remaining sludge and dross produced during floatation enter a sludge concentration tank and are concentrated and dewatered by a dewatering device. The treatment efficiency is high, the load impact resistance ability is high, the operation is stable and standard discharge after treatment of the polymer-containing sewage of the oil field is realized.

The invention discloses a high-energy activation water filter, comprising a cylinder-shaped housing, a water outlet pipe installed on the top of the housing and communicated with the inner part of the housing, a water inlet pipe installed at the bottom of the housing and communicated with the inner part of the housing, a filter element layer installed in the housing and a filter element cleaning device for cleaning the filter element layer along the reverse direction of filter water, wherein the water inlet of the water inlet pipe and the water outlet of the water outlet pipe are connected in series and installed on a tap water pipeline. By utilizing the water filter, a water purifier can be effectively and automatically cleaned, and simultaneously the needs of drinking hot water of people can be met through heating.

The invention discloses an aquaculture biofertilizer and a preparation method thereof. The aquaculture biofertilizer is composed of sodium humate, urea, calcium superphosphate, bacillus subtilis and clinoptilolite powder. The method includes: mixing fermentation composite bacteria with water evenly to obtain a diluted bacteria liquid; adding the diluted bacteria liquid into an organic fertilizer, and mixing the materials evenly, piling up the mixture in heaps, and performing cyclic overturn to obtain a primary fermentation object; then adding ferment bacteria, conducting fermentation till complete decomposition, and carrying out low temperature drying and crushing to obtain a secondary fermentation object; and finally, adding an inorganic fertilizer, trace elements, amino acid, compound vitamin, actinomyces and photosynthetic bacteria, conducting granulation into balls, and performing sorting to obtain biological organic aquaculture nutrient powder. The biofertilizer provided by the invention can be supplied to aquatic organisms for direct use, also can combine with harmful substances in water substrate to remove toxicity, and at the same time can enhance algal metabolism and increase dissolved oxygen of water. The preparation method is simple, and is suitable for large-scale industrial production.

The invention discloses a fish poly-culturing production increasing technology, and relates to a breeding method of fishes. The technology is characterized by comprising the following step of: selecting two or more of carps, crucians, mandarin fishes, snakeheaded fishes, micropterus salmonoides, silver carps, grass carps, bream fishes or megalobrama amblycephala for poly-culturing. By adopting the poly-culturing method, water quality can be adjusted, disease can be prevented and controlled, the yield of the fishes can be increased without increasing bait casting or increasing investment, the fish breeding benefit is increased, meanwhile, the fish breeding cost is also reduced.

The invention provide a cultivating method for increasing high-quality freshwater shrimp seed output comprising following basic steps: cultivating pool cleaning and preparing, freshwater shrimp selecting, stocking and cultivating, enemy organism killing, stable bait cultivating, reasonable commodity shrimp feed feeding, reasonable commodity juvenile shrimp feed feeding, crustacean special nutrition supplementing, daily management and seed catching. The method of the invention can reduce cost of seed growing, increase the output and quality of freshwater shrimp seeds.

The invention discloses a module independent fish-clam composite cultivation technology, which comprises the following steps that: (1) a fishpond and a clam pond are respectively arranged so as to culture fish and clam separately; (2) waste water in the fishpond is discharged into the clam pond; and (3) water quality analysis of the clam pond is carried out, and nitrogen and phosphorus are added so as to ensure that the ratio between nitrogen and phosphorus reaches to 7:1 and that the concentration of microalgae reaches to 500 to 1,000 per ml. On the basis of the in-the-same-pond cultivation mode of the prior fish-clam mixed cultivation, the cultivation technology divides the fishpond and the clam pond into independent units at first so as to realize separate breeding and stabilize cultivation environment; therefore, the cultivation technology is propitious to carry out standardized operation and management of each independent unit, and greatly increases the bioenergy flow efficiency of each independent unit; then, fishpond waste water is periodically discharged to the clam pond, thereby realizing composite cultivation of fish and clam. Moreover, the cultivation technology realizes realtime monitoring of the quality of fishpond waste water, and adjusts the balance of nutritive salt in water in time so as to meet the requirements of microalgae growth, thereby providing adequate nutrition for hyriopsiscumingii, quickening up the cultivation speed of pearl and optimizing resource utilization efficiency.

The invention discloses a fish pond building method, in particular to a building method of a simple flood-control fish pond in a rural area. The building method of the simple rural flood-control fish pond has the special aspects that: after a common fish pond is dug by a general method, the periphery of the fish pond is provided with a berm with the breadth of about one meter, a dam is built at the outside of the berm and a feed ditch is dug outside the dam, a diversion pipeline is arranged between the feed ditch and the fish pond, and a water inlet and a swallow port are both equipped with corresponding barring fish establishments. The flood-control fish pond designed by the method can prevent flood and can also adjust the water quality and increase the fish crop for fish breeders in rural areas, so the invention is favorable for fisheries production.

The invention provides a method for feeding high-survival-rate and high-growth-rate Hulong hybridized groupers in a pond. The method includes fry breeding pond selection, water quality control, fry distribution, light adjustment, bait feeding and other steps. The unique comprehensive water quality control technology is adopted, and by adopting suitable biological bait, suitable ratios and precisefeeding time sequences, high survival rate and high growth rate of bred fry are achieved. By adopting the method, 30 days after fry breeding, the survival rate of the Hulong hybridized groupers is upto 99.93%, the fatness is up to 5.45 g / cm3, the crude protein content is up to 50.13%, and the crude fat content is up to 50.13%; the survival rate of normal groupers is 75.82-81.88%, the fatness is2.90-3.52g / cm3, the crude protein content is 42.49%-45.90% and the crude fat content is 6.52%-7.63%. Compared with the normal groupers, the survival rate, fatness, crude protein content and crude fatcontent of the Hulong hybridized groupers are obviously improved.

The invention relates to the technical field of a microbiological preparation, in particular to a microecological preparation as well as a preparation method and an aquatic product feed thereof. The microecological preparation at least comprises the following active components of 100 thousand to 100 million CFU / g of Clostridium butyricum, one million to 1000 million CFU / g of enterococcus faecium,10 thousand to 10 million CFU / g of saccharomyces cerevisia and 0.1 million to 100 million CFU / g of bacillus subtilis. The preparation method of the microecological preparation comprises the followingstep of preparing a mixture of 85-95 parts of a carrier, 1-3 parts of enterococcus faecium powder, 1-3 parts of saccharomyces cerevisia powder, 1-3 parts of Clostridium butyricum powder and 1-3 partsof bacillus subtilis into granules at the temperature of being lower than or equal to 45 DEG C. The microecological preparation can cooperate with the aquatic product feed for use, so that the microecological preparation can be directly ingested by aquatic product breeding animals, the intestinal microecology of the aquatic product breeding animals is regulated balanced, the immune function of organisms is strengthened, the water quality is improved, and the usage amount of chemicals can be effectively reduced.

The invention discloses a preparation method of a high-concentration microalgae living cell long-acting preservative. The preparation method comprises the steps of fermenting and culturing rhodopseudomonas capsulate and halophila campisalis in a glutamate culture medium to obtain bacterial sludge, embedding the bacterial sludge into sodium alginate carrier particles, and continuously adsorbing nutrient matrix powder containing inorganic salts, vitamins, organic carbon sources and the like into the carrier particles to obtain photosynthetic bacterium carrier particle nutrient salt mixed particles, and carrying out spray drying and powder homogenization to obtain the high-concentration microalgae living cell long-acting preservative. The preservative is simple to use, only a certain amount of preservative powder needs to be added into the concentrated algae liquid, bacteria are increased in the embedded particles, and the generated metabolites can maintain the ecological balance of an algae concentrated solution. The method is simple and feasible, and the vigor of concentrated algae living cells can be maintained for 10-30 days in spring, summer, autumn and autumn without decay.

The invention relates to the field of microbes, and particularly discloses a microbial composition and application thereof. The microbial composition comprises Saccharomyces cerevisiae and Bacillus, wherein the ratio of the viable count of the Saccharomyces cerevisiae to the viable count of the Bacillus is 1:(1-1000). The experiment indicates that the microbial composition has the functions of regulating the aquiculture water body quality, increasing the aquiculture weight gain rate and feed coefficient and lowering the aquiculture death rate. The microbial composition can be prepared into a veterinary medicine, feed additive or water quality purifying agent for independent use, can also be blended in aquatic animal feed to be directly fed, has wide application range, and has favorable economic and social effects.

The invention discloses an inner-pond circulating aquaculture method capable of regulating dissolved oxygen of the aquaculture water body. The method comprises the steps of S1, building a dissolved oxygen change curve in a computer; S2, controlling a water pushing machine to conduct daytime oxygenation work at 6:00-18:00; S3, controlling bottom oxygenation equipment to conduct nighttime oxygenation work at 18:00-3:00; S4, controlling pure oxygen equipment and the bottom oxygenation equipment to conduct morning oxygenation work at 3:00-6:00; S5, regulating the dissolved oxygen of the aquaculture water body through the computer. The invention further discloses an inner-pond circulating aquaculture system capable of regulating the dissolved oxygen of the aquaculture water body. According to the method, by precisely regulating the dissolved oxygen of the aquaculture water body, it is achieved that the dissolved oxygen of the aquaculture water body is at 5 mg / L or above for 24 h every day,the aquaculture environment is improved, and the aquaculture cost and equipment energy consumption are lowered.

The invention discloses a preparation method of a high-performance livestock and poultry feces conversion aquaculture biological water fertilizing material. According to the method, the livestock andpoultry feces are used as major materials; various bacterial agents are added for converting the materials into the biological water fertilizer; the fertilizer use ingredient structures are improved;the water can be fast fertilized; the water quality is regulated; the substrates are improved; the biological water fertilizer can be supplied to aquatic organisms to be directly utilized and can alsobe combined with harmful substances in the water body substrates to realize the flocculation clustering and settlement; meanwhile, the clustered carriers richly contain various thalli; the harmful substances are directly decomposed; toxicity is eliminated; the toxicity and harm to culture fish, shrimps and crabs are reduced; meanwhile, the metabolism of alga is improved; the water body dissolvedoxygen is increased; when the biological water fertilizer is applied to the water body, the culture on the water body is fast and permanent; phytoplankton in the water body can be effectively bred, sothat the water color becomes good; the preparation method is simple and meets the requirements of scaled industrial production.

The invention provides a leech breeding method which comprises the following steps: 1) breeding young leeches, namely selecting healthy seed leeches for cultivation, feeding the seed leeches into an obstetric table for breeding, picking up egg cocoons within 18-25 days, putting the collected egg cocoons into a hatching house, controlling the temperature of the hatching house to be 25-30 DEG C andcontrolling the humidity to be 75-85% for hatching, illuminating the egg cocoons during hatching, and hatching young leeches; 2) treating a water pool, namely injecting water into the water pool, arranging an ecological floating bed on the water surface, arranging No.2 honeysuckle flower on the ecological floating bed, wherein the area of the ecological floating bed accounts for 0.75-0.9 of the area of the water pool, regulating the pH value of the water in the pool to be 6.5-7.5, adding 200-250kg of snails into the pool per mu, enabling the snails to naturally grow and breed so as to provideanimal baits for the leeches; 3) stocking the young leeches; 4) controlling the water level. According to the method, the water quality can be regulated in time, and the breeding density and the survival rate of the leeches are greatly increased.

The invention discloses a control circuit for solar movable water layer exchange and an oxygenating device. The control circuit has a power supply unit, a wireless remote control transmitting and receiving unit, a PLC unit, a motor control unit and an analog signal sampling unit, wherein the power supply unit is used for functioning, the wireless remote control transmitting and receiving unit is used for remotely controlling the solar movable water layer exchange and the oxygenating device, the PLC unit is used for realizing automatic control, and the motor control unit and the analog signal sampling unit are used for controlling the motor to work.

The invention discloses a lactobacillus preparation for aquatic products and a preparation method thereof. The lactobacillus preparation is prepared by performing separate fermentation on a pluralityof lactic acid bacteria isolated from aquatic animal growth environment and intestinal tracts in an appropriate culture medium, stopping culture when the concentration of each strain reaches 107-109CFU / ml, carrying out mixing according to a certain proportion, adding a freeze-drying protective agent, adding trehalose and oligosaccharide, and then performing vacuum freeze drying. The obtained freeze-dried lactobacillus preparation has the characteristics of milk flavor, strong bacterial activity, high bacterial content, long shelf life of 24 months and the like. Supplementing the lactobacilluspreparation to aquatic animals can effectively regulate gastrointestinal flora, promote proliferation of beneficial bacteria, improve immunity, help digestion, inhibit reproduction of harmful bacteria, etc. In addition, the preparation has a function of regulating water quality when used in aquaculture water bodies.

The invention relates to a real-time collection device for trash on water surfaces. The real-time collection device comprises a water inlet device, a filter screen device, a water suction device, a connection rod device and an energy supply device. The water inlet device is used as an inlet of water and floating objects. The filter screen device is used for filtering the water entering the filterscreen device and the floating objects entering the filter screen device, and separates the water and the floating objects. The water which is separated out enters the water suction device, and the floating objects which are separated out are left in the filter screen device. The water suction device is used for discharging the water separated out by the filter screen device. The connection rod device is used for packaging the energy supply device. The energy supply device is used for supplying electricity. The real-time collection device is simple in structure, low in cost, high in mobility and convenient to use; the floating objects in rivers can be effectively removed; and meanwhile oxygen exchange can be achieved, activity in the water is increased while the water quality is regulated,and aquatic creatures are protected.

The invention provides a high-density stereoscopic breeding method for leeches. The method comprises the following steps: (1) setting of a breeding net cage; (2) setting of a breeding medium: injecting water into a breeding pond, setting an ecological floating bed on the water surface outside the net cage, and setting No. 2 Goodyera yamiana on the ecological floating bed, wherein the area of the ecological floating bed occupies 2 / 3 to 3 / 4 of breeding area; (3) seedling putting: selecting leech seedlings with the weight of 0.3 to 0.5 gram per piece, and putting the seedlings with the density of0.12 million to 0.16 million pieces per mu; (4) fodder feeding: beginning feeding on the next day after seedling putting, wherein the feeding amount of fodder is 25% to 40% of total mass of leeches,and when the fodder inside the net cage remains 20% to 30%, the next round of fodder feeding is began; and (5) water quality management: spraying a bacteria solution into water at an interval of 15 to20 days, and cleaning impurities in water in time. According to the method, the water quality can be adjusted in time, the breeding density and survival rate of leeches are greatly increased, and theyield is improved.

The invention discloses a moving environment-friendly type exterior-interior aerator which comprises a carrier, an aeration mechanism, an axis rotation assembly and a telescopic traction rod, wherein the carrier comprises two buoys, a hoop and a steel tube belt fastener; the aeration mechanism is mounted between the two buoys through a support rod, and comprises a host machine, a motor mounted above the host machine through a support rod, an oxygen-accumulating covering cylinder mounted outside the motor and air-collecting pipes mounted at the inner sides of the two buoys; an exhaust pipe communicated with the host machine is arranged at the bottom of the oxygen-accumulating covering cylinder; the axis rotation assembly is fixed on a foundation pile in the center of a water body through an assembly base arranged at the bottom of the axis rotation assembly; two ends of the telescopic traction rod are connected with the carrier respectively through an L shaft assembly and the axis rotation assembly; and cables connected with the axis rotation assembly and the carrier are arranged on the telescopic traction rod. The aerator disclosed by the invention is applicable to oxygenation of fish ponds with different water depths, can realize oxygenation and fertilization, can improve water quality, and can be used for treating sewage and industrial waster water.

The invention discloses a device for treating phosphorus-containing organic wastewater by using an A / O soil percolation system. A centrifuge guides layered discharged water into the A / O soil percolation system; the A / O soil percolation system comprises an anaerobic soil percolation area and an aerobic soil percolation area, respectively; and water discharged from the centrifuge is guided into the bottom in the anaerobic soil percolation area by a water inlet pipe; water discharged from the A / O soil percolation systems is sprayed into a surface turbulent flow screening and filtering device, so that viruses and heavy metals in the water are removed, and organic matters are mineralized or decomposed; then the water enters a rotary sand removal device to carry out sand removal, and finally clean water reaching the standard is discharged. According to the invention, an A / O process is used in a soil percolation system, and the soil percolation system is improved by using the A / O process and an alternate vertical flow concept, so that the cost and expense of deep treatment of sewage are reduced, the production of secondary pollution in the treatment process is avoided, and the effluent water quality of sewage is enhanced.

The present invention discloses a fully zoological mineral spring health-care tea and the preparation method thereof as follows: selected Maifan stones are heated to 300-450 DEG C in a specific oven, and calcined for 2-4 hours, the activated Maifan stones, a trace-element activator, tea, NaHSO3, an antioxidant, and liquorice are mixed adequately in a ratio of 68 percent, 0.05 percent, 29 percent, 0.03 percent, 0.05 percent, 2.87 percent, and then the final product is obtained after being package with disinfected material. The fully zoological mineral spring health-care tea has the taste which is fresher, sweeter and mellower, and adds rich natural mineral substances and trace elements, thereby being capable of improving the health through the tea drinks, and being in favor of strengthening human health.

The invention belongs to the technical field of ceramics, and in particular relates to a negative ion easy-cleaning functional ceramic additive. The negative ion easy-cleaning functional ceramic additive is made of the following raw materials by mass: 10 to 16% of Chongguang stones with a particle size of 5-20 microns, 16 to 25% of tourmaline with a particle size of 5-15 microns, 5-15% of copper pectolite with a particle size of 5-20 microns, 8-12% of nano titanium dioxide, 6-8% of nano zinc oxide, 5-10% of lead-free frits, 7-20% of rare earth materials, 8-10% of superfine alumina, 8-15% of superfine quartz powder and 5-10% of sodium carbonate. The preparation method of the additive comprises the following steps of carrying out mixed ball-milling on the lead-free frits, the rare earth materials, the superfine alumina, the superfine quartz powder and the sodium carbonate firstly; and then, adding the Chongguang stones, the tourmaline, the copper pectolite, the nano titanium dioxide andthe nano zinc oxide into the obtained product, and ball-milling the obtained mixture, so that the additive with a particle size of 1-10 microns is obtained. The additive disclosed by the invention hasa self-polarizing performance, and has strong adsorption and decomposition functions, so that negative ions are produced; and after the additive is added into a ceramic, the ceramic is extremely easyto clean and not stained, and has no hidden dirt, and the negative ion easy-cleaning functional ceramic additive has a strong affinity to water.

The invention discloses a sewage treatment method. A pre-treatment pond, a biological treatment pond and a chemical treatment pond are included. The treatment method comprises the following steps of S1, precipitating municipal sewage in the pre-treatment pond, and removing suspended solids; S2, guiding the municipal sewage into the biological treatment pond through a water pump by the pre-treatment pond, and utilizing microorganisms for degrading organic matters and biodegradable pollutants in the municipal sewage in the biological treatment pond, thus meeting an emission standard; S3, guiding the municipal sewage into the chemical treatment pond through the water pump by the pre-treatment pond, utilizing chemical substances for oxidative-precipitating pollutants in the municipal sewage in the chemical treatment pond, and treating the pollutants difficult to be degraded in the municipal sewage. The sewage treatment method provided by the invention has the beneficial effects that a sewage treatment process is simplified, sewage treatment steps and the method are simplified, impurities and nitrogen and phosphorus contents in the municipal sewage are simply and effectively reduced, and the emission standard can be quickly met.

The invention discloses a water recycling treatment device in a four-section upward soil infiltration system. The device mainly comprises a nano aeration ablation device, wherein a mud discharge opening is formed in the bottom of the nano aeration ablation device; a nano aeration disc is arranged above the mud discharge opening; effluent of the nano aeration ablation device is input into the lower part of the upward soil infiltration system; the four-section upward soil infiltration system is vertically divided into four packing areas; effluent of an overflow weir in the four-section upward soil infiltration system enters a surface turbulent flow screening device; the water outlet of a water storage tank of the surface turbulent flow screening device is connected with a photocatalytic degradation reaction device. The invention also discloses a method for treating sewage by utilizing the water recycling treatment device in the four-section upward soil infiltration system.

The invention discloses a bio-fermented expanded pellet feed for California bass as well as a preparation method thereof. The method comprises the following steps: (1), mixing and crushing basic feedmaterials, transporting the powder into an expander, after steam heating gelatinization, performing extruding, expanding and pelletizing on a product, and drying to obtain expanded pellets of basic feed; and (2), putting the expanded pellets of basic feed into a mixer, spraying probiotic fermentation broth on the expanded pellets of basic feed in the mixer, and packing a mixture into a sealed bagto seal and ferment for 3-5 d after uniformly stirring. The expanded pellets of basic feed are used as culture and fermentation substrates of probiotics, which are not only nutrient sources of fish but also carriers of the probiotics and fermentation metabolites of the probiotics. The bio-fermented expanded pellet feed is acidic, and has an aroma of the metabolites of the probiotics and good palatability; and the expanded pellet feed can not only meet the nutritional requirements of aquatic animals in aquaculture water, but also adjust the water quality, improve water body substrates and control diseases, the water environment is stable, the intestines and stomachs of fish are healthy, and the feed effect is good.