1799 results about "Anaerobic reactor" patented technology

The invention relates to a sludge treatment process based on a hydrothermal modification technology. The sludge treatment process is carried out by comprising the following steps of: (1) temporarily storing the sludge which is subjected to mechanical dehydration and has the water content of 70-85% to a pretreatment unit and deodorizing the sludge; (2) introducing to a homogeneous device, fully mixing and homogenizing, introducing the homogenized sludge to a slurrying device, introducing the slurried sludge to a hydrothermal reactor for hydrothermal reaction, and introducing the hydrothermal sludge to a flash evaporator for decompression and flash evaporation; (3) cooling to 35-45 DEG C by using a cooler, then introducing to a high-pressure diaphragm pressure filter for pressure filtering and dehydration to obtain a dehydrated mud cake with the solid content of 35-45% and dehydrated filtrate; (4) introducing the dehydrated filtrate to an intermediate temperature anaerobic reactor, wherein the residence time is for 5.5-7.5d, the inlet water temperature is controlled below 40 DEG C, and the anaerobic reaction temperature is 30-40 DEG C; and (5) preparing a biomass fuel rod by using the dehydrated mud cake, and introducing the biomass fuel rod to a boiler to provide steam for the hydrothermal reactor and the flash evaporator. The sludge treatment process has the advantages of goodtreatment effect, obvious volume reduction effect, high harmless degree, recycling of methane, good economic benefit and the like.

The present invention provides an integrated system for treatment of biodegradable waste, including sewage sludge, forestry waste, food waste, agricultural waste, municipal waste, and the like. The integrated system comprises an anaerobic reactor, at least one aerobic reactor, a filtration device, and a desalinization device.

The present invention discloses an Up-flow Multi-stage Anaerobic Reactor (UMAR) used for treatment of medium / high concentration organic wastewater. The stated UMAR with forced internal circulation, improved phase separator and added sludge inlet overcomes the disadvantages of a lower load, a longer hydraulic retention time and a larger dimension in traditional anaerobic reactors. The forced internal circulation increases capacity and cycles of internal circulation thus increased efficiency of contaminant removal. The fast jetting is avoided and efficiency of gas / liquid separation is increased by an improved bending outlet of up flow pipe. The simplified sludge addition and usage are obtained by a sludge inlet. The load of UMAR in this invention can reach about 30 kgCOD / (m3d) for treatment of medium / high concentration of organic wastewater from pulp and paper process and similar wastewater, being about four times of load and capacity of traditional Up-flow Anaerobic Sludge Bed (UASB) reactors.

A method and system for the treatment of byproducts from the production of ethanol or alcohol spirits may include: a screw press to dewater the byproducts to produce a wet cake product and a filtrate product; and an anaerobic reactor to treat to filtrate product.

The invention relates to an anaerobic zero-valent iron sewage treatment method, belonging to the sewage treatment technical field. The anaerobic zero-valent iron sewage treatment places zero-valent iron in an anaerobic reactor and utilizes the environmental conditions of the anaerobic isolated air to largely reduce the formation rate of the rust of zero-valent iron and avoid the formation of hardening; meanwhile, the method uses the reducing action of metal iron to increase the anaerobic reductive atmosphere, balance the pH and increase the effect of the anaerobic organism. A circulating pump is adopted for sewage backflow so as to increase the overflow load of an iron / activated carbon layer and the reaction effect of zero-valent iron, improve the fluidization effect of sludge to increase the anaerobic process efficiency. In a sewage treatment system, ferrous iron contained in the discharged sewage is oxidized to Fe(OH)3 with the air and the coagulation generated in the process can further purify the sewage. Long-term experiment research shows that the decolorizing rate of the sewage treatment method for dye wastewater can teach 85%-95%, the COD can be reduced by more than 50% and the biodegradability can be increased to more than 0.3.

This invention discloses a method for treating the leachate of garbage. The method comprises: (1) adding flocculant to the leachate of garbage under a basic condition, and performing flocculation and preprecipitation; (2) performing partial denitrification in a circulatory aeration tank and an aeration column; (3) performing anaerobic treatment in an upflow anaerobic sludge bed reactor; (4) performing aerobic treatment by two-step contact oxidation; (5) treating the leachate in a membrane bioreactor; (6) performing nanofiltration. Water after treatment has a COD value not higher than 10 mg / L, and electrical conductivity not higher than 1000 mus cm, and can satisfy the standard for domestic water.

Disclosed is a method and equipment for treatment of polluted fluid, wherein ferrum family flocculating agents of a finite concentration are charged into the membrane bioreactor, in which they are subject to domestication and become compact biological ferrum sludge with improved property.

The present invention discloses a method for treating waste water produced by acrylic acid production, belonging to the field of organic waste water treatment technology. It includes the following main steps: firstly, electrolyzing said waste water, regulating pH value to 5-7, controlling voltage and making it b 8-9V, controlling current and making it be 20-40 A, electrolyzing time is 10-30 min; diluting the electrolyzed waste water to make COD concentration be 2000-8000 mg / L, regulating pH value to 6.5-8, then feeding said waste water into anaerobic reactor to make treatment, controlling COD concentration of waste water discharged from said anaerobic reactor and making it be 200-1000 mg / L, then making said waste water be fed into an aerobic reactor, its residence time is 18-28 h and organic load is 0.5-5 kg COD / (cu.m d), then said treated waste water can be directly discharged.

The invention provides a treatment combined process for pig farm waste water with high nitrogen content, which is characterized in that the process adopts a combined process realized by an unpowered inside and outside circulation (IOC) anaerobic reactor, an SBBR sequencing batch type biomembrane reactor and artificial swamp. The process flow of the combined process comprises the following steps: a, removing large-grain pollutants and floaters in sewage by mechanical grids; b, carrying out hydrolysis and acidification; c, using the inside and outside circulation anaerobic reactor for high-efficient anaerobic digestion; d, using SBBR reactor for aerobic / anoxic nitration; and e, carrying out the depth treatment by the artificial swamp, and realizing the high-efficient purification on the sewage through substrate filtering, absorption, precipitation, ion exchange, plant absorption and microbiological degradation. The invention can be applicable for the treatment and the integrated utilization of the waste water in big-and-middle-sized pig farms.

The invention relates to a chemical industry park's wastewater bio-treatment apparatus and a method thereof. The apparatus contains an equalizing tank, a primary settling tank, an improved ABR apparatus, a first-stage anoxic pool, a first-stage powdered active carbon aeration tank, a secondary-stage anoxic pool, a secondary-stage aeration tank, a secondary sedimentation tank, an ozone oxidation pool, a coagulation pool, a rotary disk filter, a chlorine dioxide disinfection pool and a sludge thickener. An UASB reactor is adopted in a first-grid reaction zone of the improved ABR apparatus so as to increase the first-grid sludge concentration and raise shock load resistance of an anaerobic reactor and biodegradability of wastewater. According to the two-stage A / O treatment technology, powdered active carbon is added into the first-stage aeration tank to enrich microorganisms and simultaneously absorb part of poisonous and harmful substances, thus mitigating or eliminating the inhibition effect of the poisonous and harmful substances on microorganisms in subsequent units; and the second-stage A / O system operates to further remove nitrogen and organic matters. An effluent in the secondary sedimentation tank undergoes depth treatments such as ozone oxidation, coagulation-filtration, disinfection and the like so as to further remove organic matters and suspended matters. The effluent is reused according to requirements.

The invention discloses a method and a device for treating garbage percolate, wherein the method comprises the steps of pretreatment, anaerobic treatment, membrane biochemical treatment, nanofiltration treatment, sludge treatment and the like; the device comprises a primary sedimentation tank (1) and an adjusting tank (2), the adjusting tank (2) is connected with an anaerobic reactor (3), the anaerobic reactor (3) is connected with a denitrification tank (4), and the denitrification tank (4) is communicated with a nitrification tank (5); and the nitrification tank (5) is connected with an ultrafiltration apparatus (6), and the ultrafiltration apparatus (6) is connected with a nanofiltration device (7). The method and the device achieve COD degradation of high-concentration wastewater so that the COD of high-concentration COD of 50,000 reaches about 50 after treatment and reaches the standard of industrial reuse water, thus the method and the device achieve zero discharge of the percolate, initiate a new attempt to treat high-concentration percolate, and fill up the domestic blank.

The invention relates to a landfill percolate treatment novel process method, which comprises the following steps: (1) collecting and gathering the landfill percolate into a regulating tank; (2) lifting the outlet water of the regulating tank to enter an ammonia stripping reaction vessel; (3) carrying out coagulating sedimentation treatment on the landfill percolate after ammonia stripping; (4) making the outlet water of the coagulating sedimentation enter an anaerobic reaction vessel for carrying out anaerobic treatment; (5) sequentially making the outlet water of the anaerobic reaction vessel enter an anoxic tank, an aerobic tank and an MBR reaction tank, wherein mixed liquid carries out back flowing from the MBR reaction tank to the anoxic tank, a membrane assembly used in the MBR reaction vessel is a flat plate MBR film assembly, and the MBR has the form of the submerging form; and (6) making the outlet water of the MBR reaction tank enter a reverse osmosis system, directly discharging the treated outlet water, and making reverse osmosis concentrated solution flow back to the regulating tank. The invention aims at the water quality features of the landfill percolate, reasonably combines the physicochemical treatment and biological treatment unit, and has the advantages of short and compact process flow, high treatment efficiency, low energy consumption, long service life of the membrane assembly and the like.

The invention discloses an operating method for a high-efficient anaerobic ammonium oxidation reactor. The method comprises the steps of (1) inoculating anaerobic granular sludge in an anaerobic reactor, the wherein the anaerobic granular sludge accounts for 30-90% of total volume of the reactor; and (2) taking nitrogenous simulating wastewater as reaction inflowing water, wherein the temperatureof the reactor is controlled to be in 18-37 DEG C; and in a reactor starting stage, remaining hydraulic power for 12-48h, adjusting reaction operating conditions according to concentration of ammonianitrogen and / or nitrite nitrogen, operating the anaerobic reactor for 30-150d, and forming high-efficient anaerobic ammonium oxidation granular sludge enriched with anaerobic ammonium oxidation bacteria. The method improves total nitrogen load of the reactor in a way that the load is increased gradually by lower load so as to be beneficial to stable increasing of domestication enrichment and nitrogen removing rate of the anaerobic ammonium oxidation bacteria, can effectively avoid matrix restraining of anaerobic ammonium oxidation and is beneficial to reducing process operating cost when the reactor operates under a room temperature condition.

The invention discloses a method for processing and separate recycling of printing and dyeing wastewater, which comprises the following steps: after the printing and dyeing wastewater is firstly processed by an anaerobic reactor, a hypoxia reactor and an aerobic reactor, the separate recycling of part of the water is used for a desizing process of printing and dyeing technology; then, after the rest wastewater is processed by an aerator biofilter, the separate recycling of the part of the water is used for a boiling-off process of the printing and dyeing technology; then, after the rest wastewater is processed by an ultrafiltration reactor, the separate recycling of the part of the water is used for bleaching process and mercerization process of the printing and dyeing technology; finally, the rest water is processed by an anti-permeability reactor and the separate recycling of the part of the water is used for dyeing process, printing process and ordering process. After being processed by the invention, the printing and dyeing wastewater can be carried out the separate recycling quickly and high-efficiently and the recycling rate of the wastewater reaches more than 70 percent; meanwhile, the fee of processing and recycling the wastewater can be saved; the service life of advanced treatment equipment can be prolonged, which is easy for a large-scale industrialized application.

The invention provides a method for treating palm oil wastewater and an application of the method. The method particularly adopts a process combining pretreatment, primary anaerobic treatment, precipitation, secondary anaerobic treatment and aerobic treatment. The details can be seen in the specification. The method and the application of the method have the advantages of high load, small occupied area, good treatment effect and high treatment efficiency. Most organic substances in the wastewater can be transformed into biogas which can be used as new energy after centralized collection; and the primary anaerobic treatment is controlled in a hydrolytic acidification section, thereby not only reducing the content of SS and grease in the wastewater, but also improving the treatment effect and the gas production of a secondary methanogenic aerobic reactor. The application of the method is as follows: the method not only has excellent treatment effect to the palm oil wastewater, but also can effectively treat similar fermentations (such as factory effluent of bioethanol, vintage, monosodium glutamate, starch and so on), food production, dairy products, livestock and poultry breeding and other industries; meanwhile, the process has excellent digestion effect to excess sludge for a sewage plant, in particular a municipal sewage plant.

The invention relates to an anaerobic reactor, in particular to a double-path circulation full-mixing type anaerobic reactor, mainly comprising a reactor body, a feeding device, a circular stirring device, a drainage device, a safety protection device, an effluent device, a heating device, a detection control device, a methane collection device and the like. The double-path circulation full-mixing type anaerobic reactor is provided with an internal circulation stirring device and an external circulation stirring device; the two circular stirring devices are combined to stir materials, internal circulation stirring plays a main role, while external circulation stirring plays an assistant role, so that the reactor has the characteristics of effectively trapping slurry, having high yield, obviously reducing operation cost, remarkably improving effluent quality and the like.

The invention provides a method for producing biogas by the anaerobic fermentation of mixed blue algae and sludge, which belongs to the technical field of environmental protection purification and waste resource treatment. In the method, the blue algae and the sludge are mixed for the anaerobic fermentation to produce the biogas, and the whole process is completed in an anaerobic reactor; the blue algae and the sludge are mixed in the rector, N2 is introduced to form the anaerobic state, and the blue algae and the sludge are fermented at a temperature of between 35 and 37 DEG C; and in the rector, the blue algae is discontinuously and periodically added, the degradation condition of the material is observed, at the same time, the organic matter concentration of the discharged material and the concentrations of CH4 and CO2 in gas generated from fermentation are measured until the reactor is stably operated. The biogas generated is subjected to desulphurization treatment and supplied to users for combustion or collected for power generation; and the dregs generated are used as a fertilizer for farmlands. The method for producing the biogas by the anaerobic fermentation of the mixed blue algae and the municipal sludge has the advantages of having the effect of answering multiple purposes, thoroughly eliminating algae toxins, combining the blue algae utilization and the treatment of the sludge from a municipal sewage plant, and solving organic pollution problems in both the rural and urban areas.

An induced sludge bed anaerobic reactor includes a vessel in which a septum or other partition is positioned to maintain solids in wastewater being treated toward a lower zone in the reactor. A central aperture is formed in the septum into which a sludge blanket control mechanism, such as an auger, is positioned to force solids to the lower zone of the reactor or, alternatively, pull solids up above the septum so that they can be removed from the vessel, if desired. A mixer may be utilized in connection with the bioreactor to mix the contents and prevent a crust from forming at the top of the bioreactor. Still further, a wall may be positioned to extend above the septum around its perimeter to assist in separating solids from the wastewater. The various types of bacteria used in the anaerobic process may also be separated, according to the present invention, in either a single vessel or multiple vessels so that the conditions of each respective vessel can be altered as desired.

The wastewater treatment systems have a plurality of treatment modules between the inlet and the outlet, each for treating water with a selected process. Influent is directed to a covered anaerobic reactor, and then to an attached growth pretreatment filter that is at least intermittently exposed to atmospheric oxygen. Following the filter is a hydroponic reactor followed by a vertical-flow wetland. A second embodiment includes, following the filter, a tidal vertical-flow wetland and a pump for recycling water exiting the wetland upstream of the filter.

The invention discloses a method for processing residual sludge with an integrated process of alkaline hydrolysis preprocessing, nitrogen and phosphorus recovery based on a magnesium ammonium phosphate method and methane production based on anaerobic digestion. The method comprises the steps of: preprocessing residual sludge with a secondary alkaline hydrolysis method to obtain supernate, adding a magnesium salt solution to separate precipitates, subjecting the supernate to anaerobic processing, and drying the precipitates naturally to obtain crude magnesium ammonium phosphate; injecting the supernate into an anaerobic reactor, and inoculating with 10-60% anaerobic granular sludge, wherein the volumetric loading is controlled to be 0.30-0.75kg COD (Chemical Oxygen Demand) / (m<3>.d), and the productivity of methane reaches 200-400mL CH4 / gCOD within 72h. The method disclosed by the invention has the advantages that nutrition elements in the residual sludge are utilized comprehensively, the process is simple and is consistent in flow with low chemical consumption and electricity consumption, methane is recovered while crude magnesium ammonium phosphate is obtained, moreover, residual alkaline solids are beneficial to subsequent processing, and the reduction, stabilization and recycling of the residual sludge are realized comprehensively.

The present invention belongs to the smoke purification technical field, and discloses a method for deoxidizing integrating, complexing and absorbing the organism and removing SO2 and No in the smoke, which is characterized in that alkaline absorption solution containing the ferrous-iron complexing agent Fe<II>(L) is arranged inside an absorption tower; SO2 is neutralized in the absorption solution, and NO is absorbed by the complexing iron; the smoke is exhausted from the top of the absorption tower; the absorption tail solution enters into an anaerobic reactor, and SO3<2> or SO4<2> in the tail solution is deoxidized to sulfide by sulfate reducting bacteria; the sulfide deoxidizes Fe<II>(L)-NO, Fe<III>(L) and other N-S compound in the tail solution to Fe<II>(L) and N2; at the same time, the sulfide is oxidized to simple sulfur; the absorption tail solution containing the Fe<II>(L) is directly returned to the smoke absorption tower to be used as desulphurization denitration absorption solution. The method of the present invention has the advantages that the micro-organism smoke desulphurization method and the complexing absorption smoke denitration method are combined, so that the sulfur dioxide and the nitrogen oxide can be synchronically removed, and the sulfur resource can be recycled; the complexing iron absorption agent can be cycled for use.

The invention discloses an electrically enhanced internal anaerobic zero-valent iron reactor, belonging to the technical field of water treatment. Two graphite electrodes are arranged inside an anaerobic reactor and connected with an external direct current regulated power supply through a wire to simulate growth of microorganisms; meanwhile, the oxidation reduction process of the graphite electrodes also strengthens reductive decoloration of azo dyes. The graphite electrodes are arranged in the anaerobic internal biological zero-valent iron reactor, dissolution of iron is regulated by applying micro-voltage, and the buffer capacity of the reactor to acidification is strengthened. Coupling of an external power supply and zero-valent iron can also accelerate sludge granulation, efficiently enhance the decomposition capacity to organic compounds and realize rapid starting and high-efficiency running of the anaerobic reactor. A bench scale experiment shows that after the micro-voltage is applied, the rapid starting and the sludge granulation of the anaerobic reactor can be realized within 41 days, and the electrically enhanced internal anaerobic zero-valent iron reactor has stronger shock resistance.

The invention relates to a device for improving advanced nitrogen and phosphorus removal by step feed and a method thereof, belonging to the technical field of sewage biological treatment with biochemical method. Aiming at the defects of the prior A / O step feed technology such as that the biological phosphorus can not be synchronously removed, an UCT technology has high energy consumption and more complex operation and the like, the invention combines the UCT technology with the step feed technology, improves the nitration step of the UCT technology into the series run mode of a continuous two-stage A / O technology, and combines with the strategy of the step feeding of each segmental anoxic diacritical point so as to develop the high-efficiency nitrogen and phosphorus removal technology with the effect of denitrifying dephosphorization. A first segment is provided with an anaerobic reactor, a sedimentation tank returns mud to a hypoxia reactor at the first segment, and the hypoxia reactor is added into the return line of mixed liquor of the anaerobic reactor without nitrified liquid internal reflux facilities from an aerobic reactor to the hypoxia reactor. The invention has stable water flow quality and lower energy consumption.

The invention relates to a process and a system for treating breeding wastewater comprehensively, wherein the process comprises the following steps: firstly, performing grating filtration, mixed homogenization and silt sedimentation pretreatment in a pretreatment tank; secondly, performing heating and anaerobic fermentation in an anaerobic reactor; and thirdly, treating the wastewater in a bionic pond, wherein the material liquid in a water distribution trough of the bionic pond enters a sand filter through the bottom of the water distribution trough and then is raised to a water drop step; and the material liquid flows into a pond body and flows out of the pond body after being treated by an artificial float grass belt and hydrophyte floating bodies in the pond. The process and the system have the advantages of simple process, good commonality, high treatment efficiency, low running cost, low investment cost, and simple system maintenance.

The city sewage treatment process includes the following steps: utilizing grile and desilting basin to pretreat sewage, adding coagulating agent to make the phosphorus, heavy metal and orgnaic matters existed as colloid and suspended substances feed into anaerobic reactor in the form of sludge to make organic matter convert into impure methane, making the supernatant fluid pass through the next aerobic treatment reactor to remove organic matter and convert the ammoniacal nitrogen into nitric nitrogen, mixing anaerobic discharged water and aerobic discharged water, and making the mixture waterundergo the process of anaerobic treatment to make denitrifcation, finally utilizing secondary aeration and precipitation to completely remove organic matters from sewage so as to attain the goal of cleaning the sewage.

An induced sludge bed anaerobic reactor includes a vessel in which a septum or other partition is positioned to maintain solids in wastewater being treated toward a lower zone in the reactor. A gas trap, which may also comprise an overpressure protection device, may be arranged at an outlet of the vessel. A distribution plate may be located at an inlet. A central aperture is formed in the septum into which a plug control mechanism, such as an auger, may be positioned to force solids to the lower zone of the reactor or, alternatively, pull solids up above the septum so that they can be removed from the vessel, if desired. A mixer may be utilized in connection with the bioreactor to mix the contents and prevent a crust from forming at the top of the bioreactor. Still further, a wall may be positioned to extend above the septum around its perimeter to assist in separating solids from the wastewater. The various types of bacteria used in the anaerobic process may also be separated, according to the present invention, in either a single vessel or multiple vessels so that the conditions of each respective vessel can be altered as desired.

The invention provides a treatment method of manure waste generated in the process of soaking manure in water in a breeding farm, which comprises the following steps: (1) performing solid-liquid separation of the manure waste to form a solid substance and waste water; (2) adjusting the solid substance into a solid fermentable substance with a solid mass content of 6%-12%; (3) performing anaerobic fermentation of the solid fermentable substance to generate biogas residues, biogas liquid, and biogas; (4) performing waste water anaerobic fermentation of the waste water generated in step (1) and the biogas liquid generated in step (3) to generate biogas and fertilized water; (5) collecting the biogas generated in step (3) and step (4). The invention can increase the biogas yield by 15%-30%, and save the volume of the anaerobic reactor by 50%-80%; fertilizer production by biogas residues is performed after the solid substance in pig manure is anaerobically fermented, so the sterilization effect of the fertilizer is ensured; and the production process does not require changes of the breeding mode or control of the water content of pig manure.

The invention provides a double-circulation anaerobic reactor. The double-circulation anaerobic reactor comprises a cell body, wherein the cell body is sequentially divided into a cone-shaped sludge bulking region, a main reaction region, a secondary reaction region and a sediment region from bottom to top, a first-stage gas-solid-liquid separation region is arranged at the upper part of the main reaction region, a second gas-solid-liquid separation region is arranged at the upper part of the secondary reaction region, an effluent weir is arranged above the sediment region, a first-stage sewage gas pipe is connected between an air-water separation tank and the first-stage gas-solid-liquid separation region, a second-stage sewage gas pipe is connected between the air-water separation tank and the second-stage gas-solid-liquid separation region, a sewage gas circulating pipe is connected between the air-water separation tank and a water distribution pipe, the water distribution pipe is arranged at the bottom of the cell body, and a sludge discharging pipe is further arranged at the bottom of the cell body. The double-circulation anaerobic reactor has the advantages that the cell body has low height, the double-circulation anaerobic reactor can be started quickly by flocculent sludge with high shock load resistance, the requirement on a PH value of inflow water is low, granule sludge increases quickly, the processing energy consumption is low, the processing efficiency is high, the effluent quality is stable, and the double-circulation anaerobic reactor is simple to operate and convenience to run.