62results about How to "High biomass" patented technology

The invention discloses a device and a method for purifying waste gas containing volatile organic compounds by applying dominant microorganism bacterial communities. The device comprises a bacteria cultivation box (1), a biological gas purifying tower (2), a bacteria liquid circulating pump (3), a waste gas induced draft fan (4), a purified gas induced draft fan (5), and a gas discharging barrel (6). The method comprises the following steps: (1), selecting and separating dominant bacteria; (2), taming the bacteria from the step (1); (3), preparing bacteria liquid; and (4), forming films on filler in the biological gas purifying tower, debugging and running. The device and the method have the advantages of high treatment efficiency, low investment and running cost and no secondary pollution, and are easy to operate and environmentally friendly.

The invention provides a preparation method of waterworks sludge ceramsites for pretreating micro-polluted water, belonging to the technical field of pretreatment of micro-polluted water. The method comprises the following steps of: uniformly mixing waterworks sludge serving as a major raw material with fly ash and a pore-forming agent in a certain mass ratio; adding a certain amount of water forpelletizing into balls in a ball forming mill; drying a spherical green stock, and performing continuous variable-temperature and constant-temperature baking; and naturally cooling and sieving to obtain finished ceramsites. In the method, waterworks sludge is fully utilized, and sludge is recycled; and moreover, a preparation process is simple, and cost is low. The ceramsites prepared with the method are provided with a plenty of micropores both on the surfaces and inside, and biofilm formation growth of microorganisms on the surfaces of the ceramsites is facilitated, so that the biological pretreating effect on water of a polluted water source is remarkably enhanced, and good social benefit and environmental protection benefit are achieved.

The invention discloses a process for treating wastewater generated in a solar silicon wafer production process and relates to wastewater treatment in the field of the electronic semiconductor industry. The process comprises the following steps of: pretreating wastewater in a preliminary sedimentation tank; carrying out Fenton and iron-carbon micro-electrolysis combined oxidization reaction on the wastewater in an iron-carbon micro-electrolysis reactor; after the reaction, feeding the wastewater into a coagulation-sedimentation integrated pool, feeding PAC (Poly Aluminium Chloride) and PAM (Poly Acryl Amide) to arouse the coagu-flocculation reaction of the wastewater, and after the reaction, performing sludge-water separation on the wastewater; causing the supernate to flow to a hydrolysis acidification pool, and then causing the wastewater to flow to a contact oxidation tank; causing the mixed liquid to flow to a secondary sedimentation tank for sludge-water separation, while causing the supernate to flow to a deflection sedimentation pool, and feeding PAC for purifying water so that the supernate is up to the stand and can be discharged after sedimentation; finally, performing concentration treatment on sludge. After non-degradable organic wastewater is treated by the process provided by the invention, the BOD5 (Biological Oxygen Demand) / CODcr (Chemical Oxygen Demand) ratio of the wastewater is obviously increased.

The invention relates to a degradable liquid mulching film and a production method thereof, particularly to an environment-friendly degradable liquid mulching film with straws as a basic raw material and a production method thereof. The degradable liquid mulching film is prepared from steaming slurry of crop straws (such as wheat straws, rice straws, cotton straws, wood shavings, and the like) or straws paper-making black liquor as a main raw material by a series of reactions, such as sulfonation, crosslinking and copolymerization, of macromolecules in the slurry or the black liquor, such as lignin, cellulose and polysaccharides, under the action of a film formation additive. The macromolecules in the degradable liquid mulching film have a large amount of hydrophilic groups which can effectively catch the water molecules evaporated and diffused from soil to the air, so as to prevent water evaporation and heat loss arising therefrom, thereby increasing the temperature and preserving soil moisture. The degradable liquid mulching film is helpful for increasing crop yield and improving crop quality; and the yield is higher than that by use of a plastic mulching film, and the per mu yield is increased by more than 5%. The degradable liquid mulching film can replace the conventionally used plastic mulching film.

The invention relates to a microbial flora mother liquor cultivation generator and a microbial sewage treatment method thereof. The microbial flora mother liquor cultivation generator comprises a microbial generation box, a biological stuffing bin, biological stuffing, a water feeding device, a residue discharging device, a synchronous water-air cutting and distributing device and an automatic control device, wherein the synchronous water-air cutting and distributing device comprises an aerator, a water distribution tank, a water supply pipe, an air supply pipe, a water-air mixing bin and an air distribution coil pipe; a plurality of air outlets are formed in the air distribution coil pipe; a jet orifice is formed in the top wall of the water-air mixing bin, and a water-air cutting disc is formed by the top wall of the water-air mixing bin and the jet orifice. Water is supplied to the water-air mixing bin from top to bottom to increase the pressure difference, and therefore, the air and the water can be thoroughly mixed in the water-air mixing bin; the water-air cutting disc is used for evenly cutting a water-air mixture so that the water and the air can be mixed more evenly; besides, the air and the water are supplied to the biological stuffing from bottom to top to increase the dynamic contact effect of the water-air mixture and the biological stuffing, and consequently, the microbial activity is greatly improved, and the microbial flora stronger in activity and more in biomass can be cultivated.

The invention discloses an AAO (Anaerobic-Anoxic-Oxic)-biological contact oxidation strengthened denitrification and dephosphorization device and a real-time control method of low C / N sewage treatment. The system is mainly composed of a raw water tank, an AAO reactor, an intermediate sedimentation tank, a biological contact oxidation tank, a settling zone, a discharged water tank, an online control box and a computer. The real-time control method is as follows: a DO sensor online collects concentrations of dissolved oxygen in grid cells of the biological contact oxidation tank, and the computer calculates and outputs the concentrations to control the nitrification process; a NH<4+> sensor, a NO<3-> sensor, a NO<2-> sensor and a TP sensor online collect the concentrations of ammonia nitrogen, nitrate, nitrite and total phosphorus in the discharged water tank, and the computer calculates and outputs according to the signals collected by the sensors to adjust the aeration amount, the reflux ratio of nitrifying liquid and water intake C / N. By adopting the online real-time control equipment, the system operation is optimized, the energy is saved, the consumption is reduced, the carbon source and the aeration amount are saved and the residual sludge is reduced.

The invention discloses a magnetite-zeolite magnetic biological carrier material, as well as a preparation method and an application method thereof. The magnetite-zeolite magnetic biological carrier material adopts raw materials such as zeolite, magnetite and cement. The preparation method comprises the following steps of: smashing and sieving the zeolite and magnetic iron ores, then adding the cement, mixing to be uniform and then adding water, pelleting, moulding and standing for more than 10 days at normal temperature, and continuously spraying water onto the surfaces of the obtained particles during standing so as to keep the surfaces of the particles to be wet, thus the finished product is obtained. The magnetic biological carrier disclosed by the invention can be applied to deep treatment of domestic sewage secondary treatment water, deep treatment and resource utilization of industrial waste water, deep treatment of micro-pollution drinking water and urban landscape water treatment.

The invention provides a folded plate anaerobic moving biofilm online sewage treatment system and relates to the technical field of sewage treatment systems. The folded plate anaerobic moving biofilm online sewage treatment system comprises a folded plate anaerobic reactor; the output end of the folded plate anaerobic reactor is connected with a moving bed biofilm reactor; and the first output end of the moving bed biofilm reactor is connected with a first water pipe. The invention designs an efficient energy-saving treatment method which is small in size, low in infrastructure expenditure and running expense, and more economical than a contact oxidation method and is an upgrade and an improvement or a substitute of a traditional activated sludge process, a fixed bed contact oxidation method and other treatment methods. The folded plate anaerobic moving biofilm online sewage treatment system is widely applied to newly building or upgrading and improving all the existing industrial and domestic sewage treatment systems and particularly greatly improving the system effluent quality and the phosphorus and nitrogen removal effect in the upgrading and improvement project on the premise that the improvement on the existing building is small, and the investment is reduced.

The present invention discloses an integral multistage simultaneous nitrification and denitrification biological membrane system denitrification method and device, and belongs to the technical field of biological treatment of sewage, and the device is integrally constructed sequentially by a regulatory region, a multistage simultaneous nitrification and denitrification region, a flow diversion region and a precipitation region. The multistage simultaneous nitrification and denitrification region is in a multiple-groove pushing flow form, each reaction groove is provided with an aeration system and a multi-section water inlet device; the precipitation region is provided with an overflow port and an inclined plate sedimentation tank; a multi-section water inlet pipe connects each reaction groove of the regulatory region and the multistage simultaneous nitrification and denitrification region, by full use of the advantages of the simultaneous nitrification and denitrification and control of the operation conditions, the nitrification and denitrification are integrated in a reaction zone without adding of additional alkalinity and need of stirring, nitrification liquid reflux and sludge return systems, energy is saved, and cost is reduced, load of shock resistance of the system is enhanced by the multistage pushing flow structure, by multi-section water inlet design, the role of system denitrification is enhanced, the denitrification and carbon removal effects are stable, and maintenance and management are convenient.

The invention provides a serial drop water composite wetland system for treating the non-point pollution. The system is composed of a cuboid package, a wetland device, a wetland substrate and wetland plants; two same flow lines, namely a room temperature flow line 1 and a low temperature flow line 2 are connected in parallel to form the system; each flow line is composed of six cells and one water-collecting tank; and the wetland substrate has four layers, wherein the first layer, namely the topmost layer is a clay layer, the second layer is a fine sand layer, the third layer is the mixed layer of coal cinder and limestone and the fourth layer is a cobble layer. The device has the function of efficiently purifying sewage.

The invention relates to an A2 / O-bio-contact oxidation device and method based on coupling of partial nitrification and denitrifying phosphorous removal and belongs to the field of biological treatment of sewage. The device mainly comprises an A2 / O reactor (comprising an anaerobic zone, an anoxic zone and an aerobic zone), a wobble plate sedimentation tank, a biological contact oxidation tank and a sedimentation zone, wherein the aerobic zone of the A2 / O reactor is connected with the wobble plate sedimentation tank by virtue of an overflow baffle, the wobble plate sedimentation tank is connected with the biological contact oxidation tank, and the biological contact oxidation tank is connected with the sedimentation zone; filler made from carbon fibers is arranged in the biological contact oxidation tank and is mainly used for completing partial nitrification; a sludge reflux pump is communicated with the bottom of the anaerobic zone of the A2 / O reactor, a nitrification liquor reflux pump is connected with an effluent tank and the anoxic zone of the A2 / O reactor to realize denitrifying phosphorus removal. The A2 / O-bio-contact oxidation device and method fully take advantages of partial nitrification and denitrifying phosphorous removal and have the advantages of conservation of carbon source, low aeration rate, low sludge yield and the like.

The invention discloses a method for cultivating chroococcus by a domestic-wastewater-diluted kitchen waste anaerobic digestion solution and belongs to the technical field of microalgae biology. The method is characterized in that BG11, domestic wastewater, a digestive fluid and culture solutions diluted by different times are utilized for constant-temperature light culture of chroococcus SDEC-6 and chroococcus SDEC-6 is harvested in the last growth stage. Results show that the biomass, the growth rate, the lipid content and the like of chroococcus SDEC-6 in domestic wastewater and at different dilution times are higher than those of BG11, the biomass and the lipid content, obtained by diluting a culture medium by 100 times, are higher than those of domestic wastewater. In conclusion, a mixed culture solution obtained by the domestic-wastewater-diluted kitchen waste anaerobic digestion solution can serve as a high-quality substitutive medium, promote biomass yield and lower the culture cost and is worthy of popularization.

The invention discloses a sequencing batch biofilm reactor (SBBR) for piggery wastewater, which comprises a square steel concrete structural pool and a decanter. Three-dimensional elastic filler is suspended in the pool, and a micropore aeration disc is arranged at the pool bottom; a single operation cycle of the SBBR comprises five processes of water feed, reaction, sedimentation, water discharge and idleness; and the operation of each unit is controlled by a PLC. The SBBR has the characteristics of high organic substance degradation capability and ammonia nitrogen removal capability, low residual sludge yield after treatment, high sewage treatment capacity, suitability for full-course automatic control and the like.

The invention belongs to the technical field of morchella artificial culture, particularly relates to a preparation method of morchella liquid strains, and aims to solve the problems that morchella liquid strains prepared by an existing method are low in mycelium growth activity and large in mycelium diameter, and equipment blocking is caused. The preparation method includes the steps of a, inoculating morchella mother strains into a PDA solid culture medium, and culturing for 5-10 days under constant temperature of 22-25 DEG C; b, taking the solid culture medium, inoculating into a four-edgelarge flask with indentation loaded with a liquid culture medium, and culturing on a shaking table for 2-4 days; c, adding a liquid culture medium into a liquid strain fermentation tank, sterilizing,inoculating the flask morchella liquid strains into the liquid culture medium, and culturing under a sterile condition and the temperature of 24-28 DEG C for 1-3 days to obtain the morchella liquid strains. The preparation method is low in time consumption, short in production cycle, consistent in strain age, good in repeatability, small in flocculent mycelium pellet diameter, high in mycelium activity and suitable for factory application.

The invention discloses a continuous flow aerobe fluidized bed process, which comprises the following steps of: wastewater is stored in a water inlet groove, and is pumped into the bottom of a reactor through a constant flow pump so as to enter a main reactor; the wastewater is filled into the reactor through aeration of an aeration head at the bottom of an air lift pipe in the reactor; sludge is driven to upwards move in the air lift pipe by the airflow, and is subjected to a downward sedimentation movement in a sludge-water separation region at the upper part of the reactor until the sludge enters into the air lift pipe at the main reaction region at the bottom of the reactor again; the wastewater is full of the reactor, and the sludge with the poor sedimentation property is discharged to a water discharge groove at an effluent weir at the upper part of the reactor along with effluent; the main reaction region of the reactor is fully aerated and is in an aerobic condition, and the wastewater is subjected to nitration reactor; when DO (dissolved oxygen) in the sludge-water separation region of the reactor is relatively insufficient and is in an anaerobic condition, the wastewater is subjected to denitrification reaction, and the effect of denitriding is finally realized; phosphorus can be fully absorbed by polyphosphate accumulation bacteria in the sludge-water separation region of the reactor is relatively insufficient and is in an anaerobic condition under the anaerobic condition and the aerobic condition, the last part of the sludge is discharged along with the effluent, and most of sludge continues to react.

The invention discloses a tissue culture method for dendrobium moniliforme. The method comprises the steps that 1, dendrobium moniliforme pods are taken to serve as explants to be disinfected; 2, the explants germinate to obtain sterile test-tube plantlets; 3, the sterile test-tube plantlets are cultured to obtain test-tube plantlet cluster buds; 4, the test-tube plantlet cluster buds are placed in a strong plantlet culture medium to be cultured in the strong plantlet culture medium to obtain test-tube plantlets; 5, the test-tube plantlets are placed in a rooting culture medium to obtain tissue culture seedlings; 6, the tissue culture seedlings are transplanted into a matrix to be cultured after seedling hardening is performed. According to the method, the multiplication coefficient of the dendrobium moniliforme cluster buds obtained through the culture method reaches 20-30 times, healthy and strong high-quality dendrobium moniliforme seed seedlings can be supplied in the short time, and the scale seedling culturing problem of the dendrobium moniliforme is effectively solved.

The invention provides an immersed dunaliella salina liquid ultrafiltration system. The system comprises a track tank, an immersed ultrafiltration assembly, a concentration tank, a water producing system, an aeration system and a backwashing system. By means of a dunaliella salina liquid concentration method of the ultrafiltration system, dunaliella salina heavily proliferated under the approximate optimum growth salinity condition is effectively concentrated, the size of low-salinity dunaliella salina liquids is greatly reduced while the biomass is kept, high brine amount added to realize thehigh-salinity stress growth condition later is reduced, the death rate of dunaliella salina in the concentration process can be reduced to the greatest extent through precise control on ultrafiltration work pressure, and more effective biomass can be obtained.

The invention discloses a double-bacteria system construction method. Brewer's yeast and pseudomonas putida are adopted to form a double-bacteria system I, the brewer's yeast realizes xylose utilization, and the pseudomonas putida realizes PHA accumulation. Studies on the system mainly include: determining lactic acid as an optimal carbon source of the pseudomonas putida, and on the basis, designing a middle exchange metabolism product of double bacteria to be lactic acid; exploring an optimal inoculation proportion of the double bacteria, and setting a standard of inoculating 2 g of pseudomonas putida liquid into each 200mL of inorganic salt-xylose culture medium, wherein when the inoculation proportion of the brewer's yeast and the pseudomonas putida is 10:1, talli grow most fast and are highest in biomass; exploring adding time point of sodium caprylate which is a PHA precursor substance, wherein when adding amount is 5g / L and the adding time point is at the beginning of fermentation, PHA accumulation reaches a highest level.

The invention discloses a post-denitrification device and operation method based on moving bed biofilm reactors (MBBRs), solving the problems in the existing MBBR denitrification process that filler is easy to calcify and precipitate, the concentration of a substrate at the rear section is low so as to limit the microorganism growth, and toxic and harmful matters are accumulated. The device is formed by connecting 2-4 MBBRs R1, R2, R3 and R4 in series. The effluent water of the secondary reactor is treated through anoxic denitrification, and nitrate nitrogen is degraded according to the volume of the unit reactors so as to determine adjustment of the stage time of the flowing sequence of influent water in the reactors. When the hardness in sewage is 120-300mg CaCO3 / L, the operation sequence is adjusted once nitrate nitrogen of 1.0-3.0kgN / m<3> is degraded; when the hardness in sewage is 300-480mg CaCO3 / L, the operation sequence is adjusted once nitrate nitrogen of 0.8-1.5kgN / m<3> is degraded; and when the hardness in sewage is greater than 480mg CaCO3 / L, the operation sequence is adjusted once nitrate nitrogen of 0.5-1.0kgN / m<3> is degraded. According to the invention, on the premise of high volume load, the effluent water TN can be still less than or equal to 10mg / L, the persistence is strong, and the stability is good.

The invention discloses a method for preparing a high-color-value red rice product based on solid state fermentation and relates to a solid state fermentation media component and a preparation method thereof capable of remarkably improving the pigment yield of sorghum pigment monascus T3 (Monascus kaoliang T3). The main fermentation substrate in the solid state fermentation media component is red rice, meanwhile, a small amount of fructose (0.1%-1.0%), ammonium chloride (0.01%-0.45%), magnesium sulfate (0.05%-0.5%) and monopotassium phosphate (0.1%-0.5%) are added, 0.01%-0.1% (w / v) of lactic acid-aqueous solution is adopted to control the initial moisture content of the medium to be 25-55%, and then the solid state fermentation media of the sorghum pigment monascus T3 (Monascus kaoliang T3) can be obtained after sterilization. In the process of preparing high-color-value red rice, sorghum pigment monascus T3(Monascus kaoliang T3) spore suspension is inoculated to the cooled solid state fermentation medium for cultivation, and finally, the high-color-value red rice product is obtained after fermentation products are dried.

The invention aims to provide a biological enhancer with low cost, high treatment efficiency, long duration of action and no secondary pollution for improving the COD degrading capability of aerobes in waste water, and a method for performing degradation treatment on COD in waste water using the enhancer. The biological enhancer comprises the following components by mass part: 1 part of proteins, 1-5 parts of glucose, 1-5 parts of pectin, 0.1-10 parts of aluminum hydroxide, and 0.1-10 parts of polysilicon. The method for treating waste water using the enhancer comprises the following steps: (1) putting the biological enhancer and water into a dissolution facility, uniformly stirring, and performing activating treatment for 1-8 hours; and (2) putting the biological enhancer which is subjected to the activating treatment and dissolution into an aerobic treatment unit for waste water treatment, once a day, totally for 15-30 days, wherein the aerobic treatment unit runs normally during this process. The biological enhancer and the method can be applied to the field of waste water treatment.

The invention relates to a method for improving a cellulose utilization ratio by using a glycosyl transferase 8D1 promoter to drive a GA20ox. The method comprises the following steps: using the glycosyl transferase 8D1 promoter of the xylem specific expression to drive the gibberellin oxidase GA20ox gene to excessively express and change structural compositions of aspen xylogen; through acquiringa recombinant vector excessively expressed by the GA20ox gene driven by the promoter 8D1P specifically expressed in the aspen stalk xylem, enabling the recombinant vector to be used for genetic transformation of an aspen, to obtain the 8D1P:GA20ox transgene aspen, and achieving a purpose of improving wood properties. The improvement of the wood properties of the transgene aspen is that a biomass of the aspen is increased, an S / G specific value in the xylogen is improved, so the cellulose hydrolysis efficiency can be improved, and a lignocellulose utilization ratio of pulping and papermaking isimproved.

The invention provides an artificial wetland system for treating rural domestic sewage. The system comprises a microbial fuel cell wetland module, which sequentially comprises an impermeable bottom layer, a sewage distribution layer, an anode layer, an insulating filler layer, a gas distribution layer, a cathode layer and a planting matrix layer from bottom to top, wherein the anode layer comprises an upper layer, a sandwich layer and a lower layer, the upper layer and the lower layer are plate-shaped anode materials with meshes, the upper layer is electrically connected with the lower layer,the sandwich layer is an active microorganism layer, and is filled between the upper layer and the lower layer, the cathode layer comprises a plate-shaped material with meshes, gas distributed in thegas distribution layer contains oxygen, and the anode layer and the cathode layer are connected with an external circuit through conduction wires to form a closed circuit. The artificial wetland system for treating rural domestic sewage has the advantages of high removal rate of organic matters, nitrogen and phosphorus in domestic sewage, high conversion rate of electric energy and low construction cost.

The invention provides a method for raising deguelin content with rare earth element, comprising the steps of inoculating derris callus to routine plant cell medium containing 0.005 to 0.2mmol / L of rare earth element or rare earth element oxide, adding 6.5g / L of agar, 30 g / L of cane sugar, 0.5 to 6 mg / L of cytokinin, and 1 to 6mg / L of cell auxin for light-shading culture at a temperature of 20 DEG C to 30 DEG C for 15 to 30 days, inoculating derris callus once more to routine plant cell medium containing 0.005 to 0.2mmol / L of rare earth element or rare earth element oxide after the culture is finished, and adding 6.5g / L of agar, 30 g / L of cane sugar, 0.5 to 6 mg / L of cytokinin, and 1 to 6mg / L of cell auxin for light-shading culture at a temperature of 20 DEG C to 30 DEG C for 15 to 50 days. The invention improves the growing situation of derris callus cells, promotes the growth of derris cells, and raises the accumulation amount of deguelin by inoculating derris callus to culture medium containing rare earth elements.

The invention relates to a degradable liquid mulching film and a production method thereof, particularly to an environment-friendly degradable liquid mulching film with straws as a basic raw material and a production method thereof. The degradable liquid mulching film is prepared from steaming slurry of crop straws (such as wheat straws, rice straws, cotton straws, wood shavings, and the like) or straws paper-making black liquor as a main raw material by a series of reactions, such as sulfonation, crosslinking and copolymerization, of macromolecules in the slurry or the black liquor, such as lignin, cellulose and polysaccharides, under the action of a film formation additive. The macromolecules in the degradable liquid mulching film have a large amount of hydrophilic groups which can effectively catch the water molecules evaporated and diffused from soil to the air, so as to prevent water evaporation and heat loss arising therefrom, thereby increasing the temperature and preserving soil moisture. The degradable liquid mulching film is helpful for increasing crop yield and improving crop quality; and the yield is higher than that by use of a plastic mulching film, and the per mu yield is increased by more than 5%. The degradable liquid mulching film can replace the conventionally used plastic mulching film.

The invention discloses a photosynthetic liquid which is prepared by mixing and reacting the following components in parts by weight: 50.0-60.0% of water; 20.0-30.0% of laurinol; 8.0-12.0% of dextrin;2.0-5.0% of hexadecanol; 1.0-2.0% of an emulsifier; 0.2-1.0% of cellulose; 0.2-1.0% of sodium alkyl benzene sulfonate; and 0.2-1.0% of a washing solution. The photosynthetic liquid provided by the invention is sprayed on surfaces of crops and plants in a low-concentration aqueous solution state, so as to naturally form a transparent thin film layer which is invisible to the naked eyes, so that afilm coat is formed, the growth of the plants is protected, the insect-resistant and insect-proof, disease resisting and disease prevention, cold resistance and drought resistance effects are achieved, and growth respiration of plants is not influenced, the solar photosynthesis can be super-multiplied, and the optimal growth of the crops can be promoted under the condition of being independent oftopdressing and pesticides.

The invention discloses a culture method of biological phosphorus removal granular sludge, and relates to the field of environmental engineering, in particular to a culture method of biological phosphorus removal sludge. The invention aims to solve the problems that the traditional biological phosphorus removal precipitation time is long and the content of phosphorus-accumulating bacteria in the traditional aerobic granular sludge is low. According to the method, enhanced biological phosphorus removal (EBPR) and an aerobic granular sludge process are combined, and the biological phosphorus removal granular sludge in which white particles and yellow particles coexist is cultivated in a reactor by gradually shortening the precipitation time, increasing the concentration of a carbon source and replacing the carbon source under the condition that the C / P ratio is kept between 30 and 40. The granular sludge cultured by the method is high in settling speed, the removal rate of PO4 < 3->-P is 85% or above, and the phosphorus release amount of an anaerobic section can reach 60 mg / L or above.

The invention discloses a modular ecological proliferation bed. A proliferation bed body of the modular ecological proliferation bed comprises a plurality of fish reef units which are assembled with one another; each fish reef unit comprises basalt grating, a plurality of stand columns and a plurality of basalt pipe fittings. the plurality of stand columns are pressed on the basalt grating; each basalt pipe fitting is of a hollow tubular structure, and a plurality of open holes are formed in the pipe wall of the basalt pipe fitting in a staggered mode; the two ends of the basalt pipe fittings are connected to the two stand columns respectively, and the stand columns are connected through the basalt pipe fittings; and the adjacent fish reef units share the stand columns and the basalt pipe fittings. The modular ecological proliferation bed is a multi-nutrition-level artificial fish reef for providing habitats for breeding, bait, growth and the like for benthic shellfishes, tropical sea cucumbers and macroalgae, the modular artificial fish reef small units combined with multiple nutrition levels are infinitely combined and extended, the modular artificial fish reef can be put according to the submarine topography, the submarine space is fully utilized, and multi-nutrition-level proliferation on sea cucumbers, shellfishes and macroalgae in the open sea island reefs can be realized.