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 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 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 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.

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 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 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 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.

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 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.