149results about How to "Increase microbial biomass" patented technology

The invention discloses a three-dimensional electrode bio-membrane system used for processing high-ammonium-nitrogen wastewater with a low carbon-nitrogen ratio. According to the invention, a barrier membrane concentric with a reactor body is arranged in the reactor body; with the barrier membrane, the reactor body is separated into a round anode zone and an annular cathode zone; a microbe carrier filling material is filled in the anode zone, and a positive electrode is arranged at the center of the anode zone; a negative electrode is arranged in the cathode zone, and conductive particles arefilled in the cathode zone, wherein the conductive particles serve as a third electrode; the negative electrode and the conductive particles both serve as microbe carriers; a water inlet pipe is arranged on the bottom of the anode zone, and a water outlet pipe is arranged in the cathode zone; the water outlet pipe is arranged on an outer wall on the upper end of the reactor body. According to theinvention, in a same electrode bio-membrane reactor, an eligible environment for the microbes is created with an electrochemical effect; an electron acceptor and an electron donor are respectively provided, such that nitrification and denitrification actions are respectively carried out, and ammonium-nitrogen wastewater can be effectively treated. The system is advantaged in low energy consumption, high efficiency, simple structure, and easy operation.

The present invention relates to a coker waste water biological treatment, and is characterized by that it is a process adopting biological membrane method and utilizing anaerobic treatment, anoxybiotic treatment and two aerobic treatment stages to treat coker waste water, said process equipment is formed from four reactors including anaerobic hydrolysis acidification reactor, up-flowing anoxybiotic reactor, first aerobic biological reactor and second aerobic biological reactor. Said invention also provides the concrete steps of said waste water treatment process and its process condition.

A method for ecologically improving tobacco-planting soil is disclosed. In October of the first year, after flue-cured tobaccos or corns are harvested, straws are chopped down and spread on furrows directly without plowing soil, straw decomposition accelerator or other microbe fertilizers are spread on the straws, and then ridge soil is dumped in furrows to cover and bury the straws. Green manure is applied in lines, common vetch green manure is applied on the soil surface burying the straws in lines with a width of 55-65cm, and the green manure is buried by ridging without plowing. In the next year, 10-15days before transplanting flue-cured tobaccos, flue-cured tobacco base fertilizer is applied on the green manure according to the line-spacing requirements of flue-cured tobaccos, soil is gathered to the green manure from two sides of the green manure to bury the green manure and ridge for planting flue-cured tobaccos. The method effectively improves soil, lowers production investment, ensures high yield, improves the physical properties of the soil, and increases organic matters and nutrients of the tobacco-planting soil. Moreover, the microbe amount and enzyme activity of the soil and the tobacco leaves quality are improved, the soil quality is retained and improved, and continuous flue-cured tobacco production and development in tobacco areas are facilitated.

The invention provides a ship black water and ash water treatment device and method. The device comprises a pretreatment unit, a biological treatment unit, a photoelectrocatalytic reaction unit and a sludge treatment unit, wherein ash water is mixed together with simply treated black water after being subjected to ultrasonic enhanced coagulation and efficient gravity type solid-liquid separation treatment, and the mixture enters the biological treatment unit; sewage in the biological treatment unit is treated by an anaerobic pond, an anoxic pond and an MBR pond and enters a clear water tank, BOD and nitrogen and phosphorus pollutants in the water are removed in the biological treatment unit, and effluent of the clear water pond enters the photoelectrocatalytic reaction unit; organic pollutants difficult to degrade in the sewage and bacteria in water are degraded and removed under the synergistic action of photocatalysis and electrocatalysis, the sewage is filtered finally by a membrane assembly and discharged, and the quality of the discharged water meets the recycling standard; the sludge treatment unit simply dewaters sludge discharged from the biological treatment unit. The device and the method are simple and convenient to operate and efficiently treat ship black water and ash water, so that the black water and the ash water meet the recycling standard.

The invention discloses a wastewater denitrification nitrogen removal treatment device and method. The wastewater denitrification nitrogen removal treatment device mainly comprises an oxygen-poor expansion bed, a feeding pump, a circulating pump, a feeding tank, an air floatation tank, a heating pump, a heater and a control data cabinet. The oxygen-poor expansion bed is operated at an expansion state through regulating and controlling the flow of circulating water, cutting-off of the water is avoided, and removing loads of organic matters and nitrate are improved. The oxygen-poor expansion bed has the advantages of large height-diameter ratio, small occupied area, high sewage treatment efficiency, high impact resistance, short retention time, simplicity and convenience for operation, high economic benefits and wide application prospects.

The invention discloses an immobilization method of a salt-tolerant and cold-tolerant compound strain and an application of the immobilization method. The immobilization method of the salt-tolerant and cold-tolerant compound strain comprises the following steps: firstly screening efficient anaerobic ammonia oxidation bacteria, denitrifying bacteria and petroleum-degrading bacteria, training salt tolerance and cold tolerance to respectively prepare trained Kuenenia. Anammoxidans, Ochrobactrum.spand Flavobacterium mizutaii; putting prepared biological carbon spheres into a salt-tolerant, cold-tolerant, efficient and compound degrading bacteria enrichment solution, culturing films for the biological carbon spheres and subsequently mixing the degrading bacteria enrichment solution with a salt-tolerant, cold-tolerant, efficient and compound degrading bacteria embedding compound solution, finally putting the biological carbon spheres in the mixed solution into a saturated borate solution and a 2%CaCl2 mixed solution one by one, then putting the biological carbon spheres into a refrigerator, crosslinking an washing to obtain salt-tolerant and cold-tolerant compound strain immobilization biological carbon spheres. The salt-tolerant and cold-tolerant compound strain is applied to purification of ammonia nitrogen and water polluted by petroleum hydrocarbon under the condition with low temperature and high salt, so that the strain is high in content of microbial biomass; obviously, the biological carbon spheres are used as carriers for immobilizing the salt-tolerant and cold-tolerant compound strain; the carriers are wide in material resources, simple to manufacture, suitable for industrialization, high in mechanical strength, excellent in treatment effect, low in cost and free of secondary pollution to the environment.

The invention discloses a synchronous denitrification and dephosphorization sewage treatment device for an immobilized microorganism CASS (cyclic activated sludge system). The synchronous denitrification and dephosphorization sewage treatment device comprises a pond. A water inlet tube is arranged at one end of the pond, a water outlet tube is arranged at the other end of the pond, a hollow gridding reaction box is disposed in the pond, immobilized microorganism carriers are arranged in the hollow gridding reaction box, and an aeration device is arranged at the bottom of the pond. The synchronous denitrification and dephosphorization sewage treatment device aims to overcome shortcomings in the prior art, is simple in structure, and is efficient and stable.

The invention discloses a method for preparing ramie ensilage feed. The method comprises steps of preparation of a fermentation liquid and preparation of ensilage feed. With the adoption of a suitable cultivation method, compound lactobacillus flora more beneficial to ensilage of a ramie by-product, namely, ensilage is cultivated within short time and is blended with crop straw such as wheat straw, rice straw, corn stalk and the like which are the easiest to obtain in a ramie production region to form ensilage feed with comprehensive and rich nutrients, efficient ensilage of fresh ramie plants is realized, the ensilage time is remarkably shortened, loss of nutrients is reduced, the feed quality is improved, and the method is applicable to yearly production and use of the ramie ensilage feed. The ramie ensilage feed prepared with the method can reduce consumption of concentrated feed by 25% and can effectively improve the beef quality without reducing the production performance of beef.

The invention relates to an improved integrated oxidation ditch, which comprises an oxidation ditch body, an aeration device at the bottom or the lower middle part and a built-in partition precipitation zone at the tail end of a treatment flow. The integrated oxidation ditch is characterized in that: a suspended filler is filled in the oxidation ditch body, a filler intercepting net is arranged at the water inlet of at least the precipitation zone, and a transverse herringbone folded plate or a bent pipe mud-water separation filler is arranged in the precipitation zone. The quantity of microbes in the oxidation ditch is increased, the treatment volume load is improved, the increased biomass is mainly centralized on the suspended filler, the actual suspended sludge concentration in the water of the oxidation ditch is not increased or reduced and can be controlled to be less than 3,000mg / l, the built-in partition precipitation zone can be designed according to the high load, the biomass is increased, the area of the precipitation zone is not increased or properly reduced, the occupation area of the oxidation ditch is actually and effectively saved, the occupation is saved by 1 / 3 to 1 / 5 compared with a common deep oxidation ditch and by 10 to 20 percent compared with a deep oxidation ditch with a precipitation zone, the suspended biological filler can save the running energy consumption and the running energy consumption can be reduced by 20 to 30 percent.

The invention discloses a baffling composite hydrolytic acidifying reactor to request to protect peripherial water, which comprises the following parts: pond, fill, inlet pipe and outlet pipe, wherein the pond is composed of three-grade concentric circle with inlet pipe connecting outer-race distribution groove; the distribution groove is set along circumference with water hole on the groove bottom evenly to supply water; the water passes the distribution hole on the commutating board bottom, which is baffled into outer-race, inner-race and middle reacting regions; the reacting region bottom is floating sludge bed with middle region as half flexible fill region, which intercepts most of solid suspension and colloidal matter in the effluent; the solid organics is decomposed into soluble organics and decomposed further; the vent pipe is laid on the outlet groove bottom of middle reacting region, which contains outlet water.

A nitrification-denitrification two-phase expanded-bed reactor and a sewage treating process are provided. The expanded-bed reactor comprises a reactor, an oxygen dissolving machine, a circulating pump and auxiliary pipelines. The reactor has a vertical cylindric structure, and comprises a bottom water distribution zone, an aerobic reaction zone, a secondary water distribution zone, an anoxic reaction zone and a water discharging zone from bottom to top. The aerobic reaction zone and the anoxic reaction zone are filled with small-particle-size fillers. The secondary water distribution zone is provided with a shrinkage-expansion type collector ring. The water discharging zone is provided with a three-phase separator. Through adoption of the expanded-bed reactor, nitrification and denitrification are performed in the reactor, biochemical and oxygen dissolving processes are performed independently, a biochemical treating load is high, the floor space of equipment is small and investment and a running cost are saved.

The invention belongs to a wastewater treatment technology, relating to a method for coordinated pretreatment of nondegradable industrial wastewater by means of catalyzed iron reduction and anaerobic hydrolysis acidification. The method comprises the following steps: step 1, a catalytic iron filter material is prepared and pressed into a unitized catalytic iron filter material; step 2, a common anaerobic hydrolysis-acidification reaction tank is arranged; step 3, the catalytic iron filter material is put in the anaerobic hydrolysis-acidification reaction tank; and step 4, sewage is fed into the anaerobic hydrolysis-acidification reaction tank, flows through the catalytic iron filter material and is discharged, and the hydraulic residence time is between 3 and 8 hours for anaerobic hydrolysis-acidification reaction. The method not only removes poisonous functional group of poisonous contaminant so as to reduce the toxic action on anaerobe generated by the poisonous contaminant, but also hydrolyzes nonbiodegradable contaminant into easily biodegradable small molecular substance; therefore, the method improves the comprehensive biodegradability of wastewater, and has the advantages of high treatment efficiency and excellent treatment effect.

The invention discloses a farming method for returning straw to the field locally in a corn and flue-cured tobacco rotating system. The method is applied to flue-cured tobacco and corn rotation plough land in a single cropping system and comprises the steps that firstly, corn is ridged to be cultivated, two rows of corn are planted per ridge, the height of each ridge is 30+ / -2 cm, the corn wide row spacing between every two adjacent ridges is 70+ / -5 cm, the narrow row spacing between two rows of corn on each ridge is 50+ / -5 cm, and the distance between plants is 25-30 cm; after the corn is harvested, ploughing is needless, original ridges and furrows are used, and the cut-off straw is directly spread over the furrows to be returned to the field; secondly, microorganism fertilizer is scattered on the straw, and soil on the ridges falls to the furrows for earthing and burying of the straw; in the next year, flue-cured tobacco base fertilizer is scattered in the furrows where the corn straw is buried 10-15 days before the flue-cured tobaccos are transplanted, the flue-cured tobaccos are planted in a single-row-ridge mode, the row spacing is 120+ / -5 cm, and the distance between plants is 50-60 cm; no-tillage ridge gathering is conducted towards the insides of the furrows along the two sides of each furrow, and ridges are formed for cultivating the flue-cured tobaccos. According to the farming method, the corn straw and the flue-cured tobacco straw are directly applied to the tobacco field locally, and therefore sustainable development of a tobacco region is effectively realized.

The invention discloses a device and method of urban domestic sewage treatment by strengthened nitrifying-DEAMOX biofilm process, and belongs to the technical field of biological sewage treatment. The device is mainly composed of a raw water tank, a strengthened nitrifying biofilm SBR, a middle water tank, a DEAMOX biofilm SBR and an effluent tank which are in connection in sequence. Urban domestic sewage enters the strengthened nitrifying biofilm SBR first, nitrate of the last cycle is removed by the prepositive anoxic stirring, and the complete nitrification is conduct through the subsequent aeration; effluent with nitrate and the urban domestic sewage enter the DEAMOX biofilm SBR together for denitrification, meanwhile, the nitrate generated through anaerobic ammonia oxidation is reduced to nitrite by shortcut denitrification bacteria, and the nitrite is removed through in situ anaerobic ammonia oxidation. According to the device and method, the problems of low denitrification efficiency of the urban domestic sewage and high effluent TN are solved, carbon source in the domestic sewage is taken full advantage of, and the additional carbon source consumption is reduced; in addition, on the basis of fast reaction rate of DEAMOX biofilm process and high total nitrogen removal rate and denitrification load, the advanced denitrification of the urban domestic sewage can be achieved.

The invention discloses a method for an active sludge biomembrane zone to purify domestic sewage. The sewage flows to a biochemical reaction tank after the precipitation treatment of a water regulating tank and a grid; the biochemical reaction tank consists of three parts which are respectively a hydrolytic acidification tank, a contact oxidation tank and a facultative sedimentation tank, wherein, the three tanks are all provided with the biomembrane zone; and the sewage flows to the biochemical reaction tank and is treated by the hydrolytic acidification tank, the contact oxidation tank and the facultative sedimentation tank sequentially to finish the sewage purification process. The method adopts the anaerobic-aerobic-anoxic technological process and the combination of the active sludge and the biomembrane zone to greatly improve the microbial biomass in the system, so as to improve the sewage treatment efficiency. As microorganism in the reaction tank has large biomass and rich varieties and the fixed space of the biomembrane zone can ensure more stable microflora, the system has strong anti-shock loading performance and stable technology. The biomembrane zone system can realize efficient denitrification and dephosphorization, and the purified domestic sewage reaches the national discharge standard.

The invention relates to a saline and alkaline land soil conditioner. The saline and alkaline land soil conditioner comprises, by weight, 1-15 parts of a chemical fertilizer, 10-150 parts of wormcast, 5-60 parts of humic acid, 50-650 parts of gypsum and 0.01-0.3 parts of a mixed microbial agent. The saline and alkaline land soil conditioner is especially suitable for coast middle saline and alkaline land soil, and is applied according to a dosage of 3000-4000 kg / hm<2>. The pH value of saline and alkaline land processed with the soil conditioner is reduced by 0.11 or above, the content of organic matters in soil of the saline and alkaline land processed with the soil conditioner is improved by 6.5-12.3%, and the yield of crops growing in the saline and alkaline land processed with the soil conditioner is increased by 13.8-39.9%.

The invention belongs to the technical field of water body remediation, and discloses a water quality maintenance and ecological remediation method for a lake landscape water body, particularly a method for treating the lake landscape water body with the combination of a bypass enhanced treatment technique and a water body in-situ ecological remediation technique. According to the water quality maintenance and ecological remediation method, an aeration biological aerated filter system, an aquatic plant treatment system and a spherical carbon fiber combined packing treatment system are adopted for united treatment. By adopting the method disclosed by the invention, enhanced treatment and ecological remediation are integrated, defects of a single technique can be made up, a lake ecological system can be weak if a bypass treatment system is independently used, the treatment capacity can be limited if an ecological remediation technique is independently used, the bypass treatment system and the ecological remediation technique are organically combined, suspended solids can be reduced by using spherical carbon fiber combined packing, the blocking of an aeration biological aerated filter can be reduced, meanwhile a good environment can be provided due to the spherical carbon fiber combined packing after pollutants are removed, conditions suitable for microorganisms to live can be provided, a stable ecological system can be reconstructed, and the water quality of a lake can be effectively maintained for a long time.

The invention relates to a biochemical disposal method for organic silicone wastewater. The method includes predisposal and combination of iron carbon microelectrolysis and FENTON-like advanced catalytic oxidation in order to increase the B / C value, and effluent water enters a flocculation sedimentation tank after the pH is adjusted and then sequentially enters a first-stage circulated flow biofilm hydrolysis acidification tank, a first-stage bio-multiplying biofilm aerobic reaction tank and a first-stage sedimentation tank; mud and the water in the sedimentation tank are separated from each other, a supernatant liquid enters an ozone catalytic oxidation tower and then sequentially enters a second-stage circulated flow biofilm hydrolysis acidification tank and a second-stage bio-multiplying biofilm aerobic reaction tank for biological disposal, and the effluent water is discharged from a second-stage sedimentation tank and satisfies standards. The method has the advantages that it is greatly ensured that discharge of the wastewater stably satisfies the standards, the cost for traditional physical and chemical disposal is greatly reduced, and a new idea is provided for the disposalof the organic silicon wastewater.

The invention provides an enhanced low-carbon source urban sewage denitrogenation and phosphorous removal process, and a biological-chemical combined sewage treatment device for realizing the process. The enhanced denitrogenation and phosphorous removal process comprises the steps of adding suspended filler in a biochemical reaction tank to increase microbial biomass, and at the same time adding phosphorous removal chemical agent at the end of the biochemical reaction tank. The biological-chemical combined sewage treatment device comprises a biochemical reaction tank and a chemical agent adding device, wherein the biochemical reaction tank is partitioned into an anoxic tank, an anaerobic tank and an aerobic tank that are connected in series; the anoxic tank and the anaerobic tank are respectively provided with a stirring paddle , and a water inlet pipe and a sludge return pipe are arranged at the side face of the anoxic tank; the aerobic tank is filled with 25-35% (v / v) suspended filler of the volume of the aerobic tank, an aeration pipe connected with an air inlet pipe is arranged at the bottom of the aerobic tank, and a water outlet pipe is arranged in the upper part of the aerobic tank; and the chemical agent adding device comprises a chemical agent tank, a metering pump and a chemical agent adding pipe that are sequentially connected, and the chemical agent adding pipe is connected with the aerobic tank.

The invention belongs to the field of domestic sewage purification, and relates to a method for treating domestic sewage by adopting a four-stage three-phase step-feed deep nitrogen removal system. The method solves the problems that the conventional domestic sewage treatment process is poor in nitrogen removal effect and difficult to reach the specified standards, and can fulfill the upgraded reforming goal of the conventional sewage plant on the premise that the civil facilities are not changed. The method comprises the step of respectively delivering the domestic sewage to a reactor from anoxic zones of four stages, wherein the anoxic zones and aerobic zones are arranged at intervals, so that nitration liquid reflux facilities of the system are saved; and sludge reflux is only performed in the first anoxic zone, so that the energy is saved and nitration liquid required by denitrification can be supplied to the first anoxic zone. A fluidized filling material is added into the aerobic zones, and a fluidized bed is organically combined with a step-feed process, so that the advantages of increasing the biomass and the bioactivity of the system, reducing sludge, enhancing the three-phase system in the system and the like are achieved.

The invention relates to the technical field of a culture method of particle sludge in a biological treatment technology of waste water, in particular to a culture method of aerobic denitrification particle sludge. The method comprises the following steps: putting inoculated activated sludge into an upflow-type aerobic sludge bed reactor; pumping in waste water containing nitrite and nitrate and organic matters from the bottom of the reactor; ensuring that the waste water flows out of the upper part of the reactor after passing through the reactor; and meanwhile, adopting air aeration, obtaining favourable aerobic denitrification particle sludge after the materials are cultured for 35-120 days. The aerobic denitrification particle sludge obtained by the method has good performance, and the volume loading, the removal efficiency and the operation stability of the reactor can be improved.

A new water treating group technology with a high purifying function. The invention disposes the waste water by a sequencing batch active sludge technics, a sequencing batch composite biofilm technics, a composite film separating technics or a combined sequencing batch composite biofilm technics and composite film separating technics to meet the requirement and output the water; contemporary, washing the ultramicro filter membrane core of sequencing batch composite biofilm technics and composite film separating technics and other filter membrane cores by washing technics online. The invention can enlarge the microbe inhabit in clean water and progenitive areas, strengthen the contacting of the biofilm and waste water with a low operation cost and has an orderly continuity, a cyclical cycle, a progressive pushing flow and can effectively meet the discharge requirement after the waste water disposal.

The invention discloses a micro nutrient additive for microbial water treatment. The micro nutrient additive for microbial water treatment is composed of the following raw materials in percentage by mass: 4-7% of amino acid component, 13-17% of vitamin component, 3-6% of purine and pyrimidine component, 13.5-16% of mineral component and the balance of water. According to the invention, the micro nutrient is directly added for microorganisms in water treatment, so that under the condition that the temperature, the pH value, the pollutant concentration, the dissolved oxygen, the oxidation-reduction potential and the like are the same, the pollutant decomposition and digestion capability of microbial flora in the water treatment system can be maximized, thereby improving the depletion speed and the removal rate of pollutant in water.

The invention relates to a method for treating industrial wastewater, in particular to a method for treating fermentative pharmaceutical wastewater. The method comprises the following steps of: inletting the pharmaceutical wastewater into a facultative pond; performing biochemical treatment on the pharmaceutical wastewater; and performing aerobic biological treatment on outlet water of the facultative pond by using a membrane bioreactor. The method is characterized in that: the concentration of activated sludge in the membrane bioreactor is 15,000 to 20,000 mg / L; the hydraulic retention time of the membrane bioreactor is 8 to 15 hours which is 1 / 2-1 / 4 of that of a conventional aerobic treatment process; a sludge return pump is arranged in the reactor; a sludge-water mixture in the reactor is returned to the facultative pond in a return ratio of 100 to 300 percent, so that the effect of treating persistent organic pollutant components in the fermentative pharmaceutical wastewater is improved; and a hollow fiber membrane module is used for replacing a secondary sedimentation tank to separate sludge and water. The method for treating the fermentative pharmaceutical wastewater has the advantages of less residual sludge, long sludge removing period, reduction of sludge treatment cost, simple operation, high automation degree and high capacity of resisting impact load.

A waste water treatment device and a method are disclosed. The waste water treatment device comprises an ozone oxidation device and a biochemical treatment device. The ozone oxidation device comprises an ozone destructor and an oxidation reactor. The biochemical treatment device comprises a two-phase expanded bed, an oxygen dissolving device and a circulating pump. An exhaust outlet at the top of the oxidation reactor is connected to a gas inlet of the ozone destructor. A gas outlet of the ozone destructor is connected to a gas inlet at the lower part of the oxygen dissolving device. A water discharging pipeline at the bottom of the oxygen dissolving device and a water discharging pipeline at the lower part of the oxidation reactor are combined and then connected to the circulating pump. The outlet of the circulating pump is connected to a water inlet at the lower part of the two-phase expanded bed. A water outlet at the upper part of the two-phase expanded bed is connected to a water inlet at the upper part of the oxygen dissolving device. The method includes: feeding waste water into the oxidation reactor firstly to subject the waste water to oxidation, and feeding the waste water into the biochemical treatment device to subject the waste water to aerobic biochemical reactions. According to the waste water treatment device and the method, reaction conditions and mass transfer conditions can be optimized, the biochemical treatment load is increased, the oxygen component in the oxidation exhaust and the excess pressure of the exhaust are fully utilized, and the treatment cost is reduced.

The invention discloses a multistage artificial wetland system for treatment of heavy metal wastewater. The system includes an algae pond, an oxygenation pool and a multistage artificial wetland. Themultistage artificial wetland at least includes a first stage artificial wetland and a last stage artificial wetland. Heavy metal wastewater flows through the algae pond and the multistage artificialwetland in order, the effluent water that flows through the last stage artificial wetland is recovered to the oxygenation pool, undergoes enhanced oxygen supply, and then flows through the first stageartificial wetland till up-to-standard discharge. Each stage of artificial wetland of the multistage artificial wetland includes a water inlet area, a reaction area and a water outlet area, and sewage flows through the reaction area and the water outlet area successively from the water inlet area in a porous water distribution way. A matrix layer of the reaction area includes an aquatic plant sand layer, a volcanic layer, a composite filler layer, a rice husk charcoal layer, and a gravel layer from top to bottom in order, and partition boards that are disposed in a vertical flow direction andrun through the aquatic plant sand layer, the volcanic layer, the rice husk charcoal layer, the composite filler layer and the gravel layer vertically, and a plurality of flow through-holes are distributed evenly on the partition boards. An algae pond and multistage artificial wetland coupled system is utilized to treat heavy metal wastewater to form an algae-bacteria-wetland submerged plant-composite filler collaborative treatment system, which not only can remove heavy metals from wastewater, but also can remove COD, BOD5, NH3-N and TP.

The invention discloses a preparation method of a loofah sponge bio-filler for wastewater treatment and belongs to the field of water treatment. Loofah sponge is used as a raw material having good mass transfer performance; the loofah sponge can be combined with a macromolecular material to facilitate quick attachment of microbes; microbial membrane carrier material is subjected to loading modification, and the novel filler is prepared by grafting a photocatalyst to the loofah sponge; the carrier function of the filler is enhanced; the bio-filler having high film-forming speed and high bioactivity is formed. A catalyzing enzyme is extracted from Penicillium simplicissimum; the catalyzing enzyme can be combined with a biological material to provide microbes with mass surface area suitable for rest and beneficial environments, the quantity of microbes in a bioreactor is quickly increased, and wastewater treatment efficiency is improved. The problem is solved that existing bio-fillers areunable to retain bioactivity and provide quick and effective enrichment of microbes due to the absence of affinity with microbes during wastewater treatment.

The invention discloses an integrated autotrophic denitrification reactor. The reactor comprises a reactor main body, a base and a support installed on the base. The reactor main body and the support are installed on the base. The reactor main body comprises an upper biological rotating disc and a lower anaerobic ammonia oxidation unit. The biological rotating disc comprises a water tank, a rotating disc, a rotation center shaft and an aeration device. The inner cavity of the anaerobic ammonia oxidation unit is orderly divided into a first reaction zone, a second reaction zone and a third reaction zone. The third reaction zone is orderly divided into a granular sludge zone, a settling zone and an outlet water zone from top to bottom. The bottom of the granular sludge zone is provided with a sludge discharge outlet with a valve. The upper part of the outlet water zone is provided with a downflow weir. The outer part of the downflow weir is provided with an outlet water groove. The bottom of the outlet water groove is provided with an outlet water pipe. According to the biological rotating disc-anaerobic ammonia oxidation combined reactor, in the air-driven biological rotating disc, through rotating disc rotation, high-nitrogen content waste water and oxygen fully contact so that shortcut nitrification is realized. Through adjustment of an aeration rate, a rotating disk rotating rate can be controlled. The reactor has good impact load resistance.

The invention provides a coal mine domestic wastewater treatment device and a treatment method. The coal mine domestic wastewater treatment device comprises a grille well, an adjustment tank, a pre-sedimentation tank, and a simultaneous biological oxidation tank (SBOT), wherein the grille well, the adjustment tank, the pre-sedimentation tank, and the SBOT are orderly communicated along a coal mine domestic wastewater flow direction. The SBOT is separated into N little tanks along a direction perpendicular to the bottom of the SBOT. Each one of the N little tanks is provided with an upper flowchannel, carriers intercepted by an upper carrier interception grille and a lower carrier interception grille and a lower flow channel close to the bottom of the SBOT, wherein an aerated pipe is arranged between the lower carrier interception grille and the lower flow channel and a dredge pipe is arranged at the bottom of the SBOT and is communicated with the outside environment. The coal mine domestic wastewater treatment device and the treatment method can effectively reduce the content of organic matters in coal mine domestic wastewater, the content of ammonia nitrogen in coal mine domestic wastewater and the content of total nitrogen in coal mine domestic wastewater, avoid the use of a secondary sedimentation tank and an activated sludge backflow system, greatly simplify coal mine domestic wastewater treatment processes, and reduce coal mine domestic wastewater treatment device costs.

The invention relates to a remediation method for copper and cadmium co-contaminated soil. The method specifically comprises the steps that eleusine indica is planted in the contaminated soil, and Trichoderma virens F7 or inactivation Trichoderma virens F7 are applied in a combined manner; and the classification name of the Trichoderma virens F7 is Trichoderma virens, and is stored in the ordinary microorganism center of the Chinese microorganism culture preservation administration committee with the storage number of CGMCC No.3.17613. The contaminated soil is treated with the Trichoderma virens F7 combined with the eleusine indica; remediation efficiency for the copper and cadmium co-contaminated soil is improved; and a cooperative remediation effect improvement phenomenon exists between microorganisms and the plants; a good ecological effect is provided, and the remediation method is applicable to remediation of the copper and cadmium co-contaminated soil; the application method for Trichoderma virens F7 fermentation liquor and solid preparations is easy; the biomass of the eleusine indica is obviously increased; meanwhile, the microbial biomass of the soil can be increased; and the rhizosphere micro-ecological environment of the plants is improved.