180 results about "Anaerobic membrane bioreactor" patented technology

The invention discloses a novel anaerobic membrane bioreactor, which comprises an anaerobic biomembrane zone, an anaerobic activated sludge zone, a membrane disengagement zone and the like. Water inlet tubes of the novel anaerobic membrane bioreactor are positioned on the upper part of the novel anaerobic membrane bioreactor and uniformly distribute water through a triangular overflow weir. A gas collection chamber is positioned on the top and is connected with two pipelines, wherein one pipeline is used for exhausting and the other one is connected with gas recycle pump. An aerobic gas is recycled to the bottom of the reactor and is aerated through an aerator so that membrane fouling can be effectively reduced. A round table and a cylindrical separation plate are arranged in the middle of the reactor and divide the reactor into the anaerobic biomembrane zone, the anaerobic activated sludge zone and the membrane disengagement zone. A membrane module is arranged on the membrane disengagement zone in a form of immersion and water is pumped out of the membrane module by a pump. The device can be applied to treatment of high-concentration organic waste water in municipal engineering, food industry, industry and the like, and is in particular applied to the places where the land resource is in short supply because of a small occupied area.

The invention provides an integral anaerobic dynamic membrane bioreactor and an operation method thereof. The integral anaerobic dynamic membrane bioreactor mainly comprises a main body, a dynamic membrane module and a stirring device, wherein the main body has a hermetical structure; the top of the main body is provided with an air outlet; the side of the main body is provided with a water outlet; the bottom of the main body is provided with a water inlet and a mud outlet; the dynamic membrane module is arranged inside the main body; the inside of the dynamic membrane module is provided with a water outlet pipe which is connected with the water outlet on the main body; the stirring device is arranged on the main body; a transmission shaft of the stirring device passes through the dynamic membrane module; a blade on the transmission shaft is positioned under the dynamic membrane module; and a liquid level sensor is arranged inside the main body. Water automatically flows out after being filtered by a dynamic membrane depending on the pressure difference between the liquid level of a mixture and the water outlet pipe of the reactor. The operation method for the reactor is to operate the reactor by adopting constant liquid level, wherein the water automatically flows out after being filtered by the dynamic membrane module depending on the pressure difference between the liquid level of the mixture in the main body and the water outlet pipe of the dynamic membrane module. The integral anaerobic dynamic membrane bioreactor solves the problem of membrane blocking and reduces the operating cost.

The invention discloses an anaerobic membrane reactor-partial nitrification-anaerobic ammonium oxidation combination device and method. The device is used for treating sewage by utilizing an anaerobicmembrane bioreactor and a partial nitrification-anaerobic ammonium oxidation combination process, and organic matters in the sewage are removed in the anaerobic membrane bioreactor, so that efficientcarbon-nitrogen separation is realized; part of ammonia nitrogen is converted into nitrite nitrogen under the action of nitrozation in a partial nitrosation reactor; ammonia nitrogen and sub-nitrogengenerate nitrogen to be discharged under the action of anaerobic ammonium oxidation in an anaerobic ammonium oxidation reactor; and nitrate nitrogen can be generated at an anaerobic ammonium oxidation stage, so that an effluent partially flows back to the front end of a nitrosation reactor, nitrate nitrogen is reduced to form nitrite nitrogen, and furthermore, the deep removal of the organic matters and nitrogen is realized. Efficient energy recovery, operation energy consumption reduction, operation stability and high carbon-nitrogen pollutant removal efficiency are realized on the basis that sewage treatment is guaranteed to reach the standard.

The invention discloses a three-compartment immersed anaerobic membrane bioreactor, comprising a buffer chamber, an anaerobic reaction chamber and a membrane filter chamber. A first and a second partition boards are arranged between the anaerobic reaction chamber and the buffer chamber, the height of the first partition board is 3/4-4/5 of that of the buffer chamber, a passage is arranged under the second partition board, a third and a fourth partition boards are arranged between the anaerobic reaction chamber and the membrane filter chamber, the height of the fourth partition board is 3/4-4/5 of that of the membrane filter chamber, a second passage is arranged under the third partition board, the anaerobic reaction chamber is internally equipped with a methane aeration stirring device, a communicating pipe is arranged between the buffer chamber and the membrane filter chamber which is internally equipped with a membrane assembly, a water outlet pipe is connected with the upper portion of the membrane assembly, and the bottom portion of the membrane filter chamber is equipped with an exhaust pipe. The invention has high sewage water treatment effect and perfect quality of water outlet, and can wash the membrane assembly without affecting normal metabolism of sensitive anaerobic microorganisms, thereby guaranteeing the operational continuity and stability of the invention.

The invention provides a device for relieving membrane pollution of an electric reinforced separation membrane and synchronously promoting methane production. A membrane separation technology, an anaerobic microbial technology and a bioelectrochemistry technology are organically combined. The device relates to the technical field of sewage treatment. The device provided by the invention belongs toan integrated immersed anaerobic membrane bioreactor, which comprises a reactor main body, a separation membrane assembly, a three-phase separator, a pressure detection device, a water pump, a temperature control device, a power supply device and the like, wherein the separation membrane assembly is made of conductive materials, so that the dual effects of filtering and biological cathodes are achieved. The device can reach the following effects that on one hand, the sludge loss can be reduced through interception; meanwhile, electrical bias is applied onto the surface of the membrane; the occurrence of membrane pollution is relieved through the static electricity repulsion effect; on the other hand, through the introduction of an electric field, the growth and metabolism of electric active microbes can be stimulated; the organic matter conversion efficiency in the anaerobic reaction is enhanced, so that the treatment efficiency and the outlet water quality can be improved; in addition, energy sources can be recovered from sewage in a biogas mode; the operation energy loss can be supplemented.

The invention relates to a photocatalytic postposed internal-circulation anaerobic fluidized membrane bioreactor. The photocatalytic postposed internal-circulation anaerobic fluidized membrane bioreactor comprises a reaction barrel, a gas stripping barrel, a three-phase separator and a membrane assembly, wherein a water inlet pipe and a gas inlet pipe are arranged at the bottom of the reaction barrel; and the membrane assembly is a cylindrical ceramic membrane loaded with nano-titanium dioxide particles, or the membrane assembly is a hollow fiber ultrafiltration membrane of which a light titanium dioxide particle mesh is hung on the outer surface. The invention further discloses a working method of the photocatalytic postposed internal-circulation anaerobic fluidized membrane bioreactor. An internal-circulation anaerobic treatment technology and a titanium dioxide photocatalytic technology are combined, and advantages of an anaerobic membrane bioreactor and a photocatalytic bioreactor are combined, so that quality of outlet water is obviously improved; and the membrane assembly is arranged at a supernatant part of a three-phase separation zone and doses not directly contact sludge, and nano-titanium dioxide has a photocatalytic effect, so that membrane pollution is greatly reduced, the service life of the membrane assembly is prolonged, and manpower and material resources required in a membrane replacing cycle are reduced.

The invention discloses a facultative anaerobic membrane bioreactor wastewater treatment device which comprises a device body provided with a water inlet and a water producing port, wherein an intensified anaerobic reaction zone and a composite facultative anaerobic fluidized bed MBR reaction zone are sequentially formed in the device body from the water inlet to the water producing port; the intensified anaerobic reaction zone consists of at least two reaction chambers connected in series; biological stuffing is filled in the reaction chambers; an aeration device is arranged at the bottom of the composite facultative anaerobic fluidized bed MBR reaction zone; the composite facultative anaerobic fluidized bed MBR reaction zone comprises a fluidized bed reaction zone and an MBR reaction zone; fluidized bed stuffing is suspended in the fluidized bed reaction zone; an immersed ultrafiltration membrane component is arranged in the MBR reaction zone; a water production pipeline of the immersed ultrafiltration membrane component is connected with a water production port. The invention also provides a wastewater treatment process for performing wastewater treatment by adopting the wastewater treatment device. The wastewater treatment device and the wastewater treatment process have the advantages of good wastewater treatment effect, stable water production and the like.

The invention discloses a sewage nitrogen and phosphorus removal method and device. The device comprises a water inlet tank (1), an anaerobic membrane bioreactor (2), an adsorption tank, a gas separation membrane device (11) and an ammonia nitrogen absorption tank (13) which are connected in sequence, wherein sewage enters the anaerobic membrane bioreactor (2) from the water inlet tank (1) for anaerobic hydration; a vacuum membrane pump (14) and a membrane surface washing device (19) conduct membrane surface washing on the anaerobic membrane bioreactor (2); the sewage after hydration enters the adsorption tank for adsorption phosphorus removal; the sewage after adsorption phosphorus removal and alkalinity medical liquid react; the sewage is separated into purified water and ammonia gas after the sewage enters the gas separation membrane device (11); the ammonia gas enters the ammonia nitrogen absorption cell (13) after the ammonia gas reacts with acidity medical liquid; purified water flows out from a water outlet. According to the invention, 99% of ammonia nitrogen (NH3-N) is removed and recovered; 98% of phosphorus (P) is removed and recovered; water outlet effect is good; new energy is provided; energy consumption is reduced.

The invention relates to an anaerobic composite membrane bioreactor combination system and a method for treating mixed wastewater. The anaerobic generator is placed in an incubator, and its water inlet is respectively connected to a submersible pump, an alkali adding tank, and a phosphorus adding tank in a raw water tank. tank; the inlet and outlet of the incubator are respectively connected to the outlet of the submersible pump in the tap water tank and the water inlet of the tap water tank; the composite membrane bioreactor has built-in composite packing, aeration head, membrane module, and membrane module outlet connection The water outlet pump controlled by the automatic control programmer; the water outlet of the reaction zone in the anaerobic generator is connected to the water inlet of the composite membrane bioreactor, and the return port of the composite membrane bioreactor is connected to the water inlet of the anaerobic generator through the reflux pump. The mixed wastewater from the domestic waste transfer station adjusts the pH to 7.0-8.5 with alkali, and supplements phosphorus, then enters the anaerobic generator, and then overflows into the composite membrane bioreactor. The effluent is sucked by the effluent pump, and part of the sludge at the outlet is The mixed solution is returned to the anaerobic generator.

The invention discloses an anaerobic sewage treatment device and an anaerobic sewage treatment process. The anaerobic sewage treatment process includes inoculating anaerobic digestion sludge and anaerobic ammonium oxidation sludge into an anaerobic membrane bioreactor and an anaerobic ammonium oxidation reactor; allowing wastewater to sequentially flow through the anaerobic membrane bioreactor, a denitrification reactor and the anaerobic ammonium oxidation reactor, then draining water and allowing a part of water to flow back to the denitrification reactor. The anaerobic sewage treatment device and the anaerobic sewage treatment process have the advantages that biogas energy can be recycled by the anaerobic membrane bioreactor, organic pollutants can be removed by the anaerobic membrane bioreactor, effects of removing nitrogen by denitrification and pre-selecting floras can be realized by the denitrification reactor, total nitrogen can be removed by an anaerobic ammonium oxidation pond, and the nitrogen removal aeration quantities can be effectively reduced by the anaerobic ammonium oxidation pond; the anaerobic sewage treatment device and the anaerobic sewage treatment process can be used for high-concentration organic wastewater, and accordingly the purposes of reaching mainly anaerobic carbon-nitrogen standards and recycling biogas can be achieved; the anaerobic sewage treatment device and the anaerobic sewage treatment process also can be used for treating low-concentration organic wastewater, and accordingly the aeration quantities required in treatment procedures can be reduced to a great extent.

The invention provides a sewage treatment system and a sewage treatment method of an anaerobic fluidized bed-micro aerobic membrane bioreactor, which aims at solving the problem that an aerobic activated sludge process in the prior art is large in occupied floor space and high in energy consumption. The sewage treatment system is formed by series combination of an anaerobic fluidized bed and a micro aerobic membrane bioreactor, hydrolytic acidification and anaerobic fermentation are performed on sewage firstly through the anaerobic fluidized bed, then the sewage enters the micro aerobic membrane bioreactor, and finally outlet water is discharged in a clean water pool by utilizing a suction pump. The sewage treatment system which is compact in structure, small in occupied area and low in energy consumption and the sewage treatment method are suitable for treatment of urban sewage and industrial sewage containing ammonia nitrogen and organics.

A system and process for producing ethanol and biogas. An incoming feedstock and water is directed to a preparation unit that frees sugar from the feedstock. The feedstock is directed to a fermenter that ferments the sugar to produce a beer that includes ethanol and feedstock. The beer is directed to a distillation unit which separates the ethanol from the feedstock and produces ethanol and whole stillage. The stillage derived is direct to an anaerobic membrane bioreactor unit. The stillage is subjected to anaerobic digestion in the anaerobic digester and this produces mixed liquor that includes suspended solids. Mixed liquor including the suspended solids is directed to the membrane separation unit which filters the suspended solids and produces a concentrated reject (retentate) stream and a backset permeate stream. The backset permeate stream is then mixed with the incoming feedstock.

The invention provides an electrochemical and anaerobic membrane combined biological sewage treatment plant and a treatment method thereof. The electrochemical and anaerobic membrane combined biological sewage treatment plant comprises a reaction tank in which a sacrificial anode electrode, a non-sacrificial anode electrode and a membrane module cathode are disposed. The electrochemical and anaerobic membrane combined biological sewage treatment plant further comprises a power supply device. A positive electrode of the power supply device is electrically and independently connected to the sacrificial anode electrode and the non-sacrificial anode electrode, respectively, and a negative electrode of the power supply device is electrically connected to the membrane module cathode. According to the present invention, electrochemistry and an anaerobic membrane bioreactor are combined, and pre-removal of pollutants, increase of sludge size and neutralization of sludge surface charges are achieved through electroflocculation; pollutants are electrostatically repelled by means of an electric field, and the morphology of a filter cake layer is improved by a hydrogen evolution reaction, achieving in-situ electrical cleaning of the membrane surface; the activity of microorganisms is stimulated by the electric filed so as to increase the metabolic rate of the microorganisms and promoting amethane yield. Moreover, pH decrease caused by metabolic acid production by microorganisms is mitigated by metal ions from electroflocculation.

The invention discloses a sewage treatment device and a sewage treatment method by combining a bio-ferric process and an anaerobic MBR method. The method comprises the following steps: step 1, acclimating bio-ferric sludge; step 2, pumping sewage into an anaerobic membrane bioreactor (3) from a water inlet pool (1) by virtue of a water inlet pump (2), and mixing the sewage with the acclimated bio-ferric sludge; step 3, periodically detecting the iron content in the anaerobic membrane bioreactor (3); and step 4, pumping the purified water into a water outlet pool (5) from the water outlet of a microfiltration membrane module (6) by virtue of a suction pump (4). According to the sewage treatment device and the sewage treatment method by combining the bio-ferric process and the anaerobic MBR method provided by the invention, the membrane module is difficultly polluted, the effluent quality is high, the sewage treatment and purification time is short, the service life of the bio-ferric sludge is long, the sewage treatment cost is low, and the method and device are suitable for wide popularization and application.

The invention relates to an anaerobic membrane bioreactor and a forward-osmosis reverse-osmosis combined sewage treatment system, which relate to a sewage treatment system, and aim at solving the problems of the existing anaerobic membrane bioreactor that in output water the concentration of ammonia and nitrogen is high, the total concentration of total nitrogen is high, the phosphorus of a given quantity is contained, and the output water cannot reach the standard. A water inlet box is connected with the anaerobic membrane bioreactor through a first water pipe, a first water outlet storage tank, a forward osmosis assembly, a second water outlet storage tank and a reverse osmosis assembly are sequentially arranged, a water outlet pumping peristaltic pump is arranged on a second water pipe, a water inlet peristaltic pump is arranged on a third water pipe, a three-way water pipe is respectively connected with a second water outlet storage tank, the reverse osmosis assembly and a pure water discharging tank, a supercharging pump is arranged on the three-way water pipe which is connected with the reverse osmosis assembly, one end of a fifth water pipe is connected with the reverse osmosis assembly, the other end of the fifth water pipe and the three-way water pipe are collectively connected with the pure water discharging tank, and the forward osmosis discharging tank is connected with the reverse osmosis assembly through a sixth water pipe. The anaerobic membrane bioreactor and the sewage treatment system are used for treating the domestic sewage.

The invention discloses a biogas circulating electromagnetic anaerobic membrane bio-reactor for wastewater treatment. A reaction tank is separated into a main reaction area and a membrane separation area; the main reaction area and the membrane separation area are communicated at the bottom of the reaction tank; the top in the reaction tank is provided with a biogas collection area; magnetic biological carriers are added into the reaction tank; electrode plates and guide plates are arranged in the main reaction area; the electrode plates are connected with a direct current power supply; membrane components and a membrane washing device are arranged in the membrane separation area; one end of a biogas circulating system on the outer top of the reaction tank is connected with the biogas collection area, and the other end of the biogas circulating system is connected with the membrane washing device; the bottom of the reaction tank is provided with a sludge hopper and a wastewater distribution system; the wastewater distribution system is connected with a wastewater pipeline and a wastewater circulating system; and the water inlet of the wastewater circulating system is communicated with the upper part of the main reaction area of the reaction tank. By the wastewater distribution system, membrane pollution can be reduced, the service life of the membranes is prolonged, and the capacity of treating toxic refractory pollutants of the anaerobic membrane bio-reactor is enhanced.

The invention discloses inner-loop anaerobic membrane bioreactor treatment method and equipment for high-concentration organic wastewater. The treatment method of the organic wastewater comprises the following steps: A) inoculating anaerobic sludge into a first reaction chamber and a second reaction chamber; B) transporting the organic wastewater to the first reaction chamber through a water inlet pipe, forming an inner loop through a first three-phase separator, the second reaction chamber, a second three-phase separator and a gas-water separator sequentially, and separating a mixed liquid through a membrane component in the circulating process, so as to obtain produced water; C) enriching methane generated in the first reaction chamber and the second reaction chamber through the first three-phase separator and the second three-phase separator sequentially, feeding to the gas-water separator, separating and then producing methane; and D) separating and then producing methane by the gas-water separator, supplying a part of the methane to the membrane component in a pressurizing manner, feeding to the gas-water separator through the second three-phase separator, so as to form methane circulation aeration. The invention also discloses equipment for achieving the method. The high-concentration organic wastewater (such as farm and sideline food processing industry and livestock and poultry breeding wastewater) is processed by adopting the method disclosed by the invention, thus high-load and short-flow one-step standard reaching can be achieved.

The invention discloses an anaerobic membrane bioreactor. The anaerobic membrane bioreactor comprises a tank, the bottom in the tank is provided with a cyclone water distributor, the cyclone water distributor is connected with a water diversion bag arranged outside the tank, the upper portion of the outside of the tank is provided with an anaerobic membrane module connected with the inside of the tank, one end of the anaerobic membrane module is connected with an outlet water pump, and the other end is connected to the water diversion bag through a circulating pump; and the upper portion of the tank is connected with a biogas pressurizing pump, the biogas pressurizing pump is connected to a biogas outlet at the top of the tank, and biogas pressurized by the biogas pressurizing pump is conveyed to the anaerobic membrane module as an anaerobic membrane module stirring gas source. The anaerobic membrane reactor has the advantages of high treatment load, small occupied area, stable quality of outlet water, basically no SS, stable running, engineering investment reduction due to no need of particulate sludge, permanent effectiveness of once added sludge bacterium strain, energy consumption and running cost reduction due to no aerobic treatment of wastewater with low requirements, and basically no manual operation due to high automation degree.

The invention relates to a method for efficiently treating nitrogen-containing waste water based on the combination of dissimilatory reduction of nitrate into ammonium and denitrification coupling anammox. The method comprises the following steps: adding aerobic activated sludge into an anaerobic membrane bioreactor; introducing waste water to be treated into the anaerobic membrane bioreactor through two water inflows so as to realize the synchronous enrichment of dissimilatory nitrate reduction to ammonium (DNRA) bacteria, denitrifying bacteria and anammox bacteria; and successfully startingthe combination of dissimilatory reduction of nitrate into ammonium and denitrification coupling anammox to realize efficient removal of nitrogen in the sewage. According to the method provided by theinvention, combined denitrification processes of denitrification, anammox and DNRA occur simultaneously in the late stage of a process of enriching and culturing DNRA, so that the low chemical oxygendemand (COD) and the low-temperature tolerance of the anammox bacteria are greatly improved, the DNRA bacteria, the denitrifying bacteria and the anammox bacteria exert advantages separately in a same environment, and the denitrification efficiency and the organic matter utilization rate can be greatly improved.

The invention relates to a double-membrane double-circulation sewage treatment process for enhancing denitrifying phosphorus removal. An anaerobic/anoxia membrane bioreactor and an aerobic membrane bioreactor are connected in series so as to enhance denitrifying phosphorus removal through a double-membrane filtration two-way circulation mode. The double-membrane double-circulation sewage treatment process comprises the steps of: firstly, carrying out anaerobic phosphorus release on phosphorus-accumulating bacteria under anaerobic condition, and storing organic matters in inflowing water as poly-beta-hydroxybutyric acid; then circulating supernate subjected to anaerobic phosphorus release to the aerobic membrane bioreactor for carrying out aerobic nitrification and degrading organic matters through a membrane assembly, circulating nitrifying liquid in the aerobic membrane bioreactor to the anaerobic/anoxia membrane bioreactor for carrying out denitrifying phosphorus removal through the membrane assembly; then filtering effluent water by utilizing the membrane assembly, and finally discharging phosphorous-rich sludge, thus realizing the phosphorous removal. According to the double-membrane double-circulation sewage treatment process, the thorough separation of nitrobacterium and phosphorous-accumulating bacteria can be realized, the carbon source competence of different microorganisms and sludge age conflict in the traditional denitrification and phosphorous removal processes can be solved, and the carbon sources and running cost can be saved; the membrane filtration can meet the requirement on the quality of sewage recycled water; the process is simple in flow and convenient to operate.