1484 results about "Biotreatment" patented technology

The present invention relates to an integrated closed loop system for aquaculture in at least one culturing tank and using continuous bioreactor technology for the biological treatment and removal of organic material, nitrogen and phosphorous, comprising: an integrated, partially or wholly closed loop system for waste water treatment, where the water contains nitrogen containing compounds and / or substances, comprising at least one production unit of such nitrogen containing compounds and / or substances and using continuous bioreactor technology for the biological treatment and removal of organic matter, nitrogen and phosphorous from the said water at continuous flow, comprising: a) at least one suspended carrier bioreactor for bacterial growth under anoxic conditions to cause anaerobic denitrification, with one or several compartments, preceding b) at least one suspended-carrier bioreactor for bacterial growth under oxic conditions to cause aerobic nitrification, c) the denitrification taking place after the production unit, and d) the nitrification taking place prior to the production unit in a by-pass mode as part of the continuous flow.

This invention discloses a method for deep denitrification treatment of high-concentration organic wastewater. The apparatus comprises an anaerobic decarbonization zone, an aerobic nitrosation / anaerobic ammoxidation denitrification zone, and a traditional nitrification / denitrification zone. In the anaerobic decarbonization zone, an anaerobic bioreactor is utilized to perform anaerobic biotreatment on the organic pollutants in raw water to remove the majority of organic matters. In the aerobic nitrosation / anaerobic ammoxidation denitrification zone, ammonia nitrogen and nitrite nitrogen are removed in the form of nitrogen gas. In the traditional nitrification / denitrification zone, nitrate in the water discharged from the aerobic nitrosation / anaerobic ammoxidation denitrification zone is subjected to denitrification and removed in the form of nitrogen gas. Excess organic matters are subjected to aerobic bioreaction and removed. The method can ensure COD; total nitrogen and ammonia nitrogen contents in the treated water are qualified for discharge. The method has such advantages as high decarbonization and denitrification efficiency, low energy consumption, and high running stability.

The invention relates to an ecological greenbelt treatment process for treating rural domestic sewage, which mainly comprises the steps of: (1) anaerobic pretreatment: performing anaerobic hydrolysis pretreatment to domestic sewage; (2) artificial wetland treatment: performing artificial wetland treatment to pretreated domestic sewage; and (3) shallow ecological pond aerobic biotreatment: further performing shallow ecological pond aerobic biotreatment to outlet water treated by the artificial wetland, degrading and converting organic matters and nutrients entering the pond, and recycling purified sewage as a regenerated water resource. The invention adopts an ecological greenbelt treatment system comprising the anaerobic pretreatment, the artificial wetland and the shallow ecological pond to treat the rural domestic sewage, and has the characteristics of good treatment effect, recycling on site, low investment, low system operating cost, simple maintenance, obvious ecological benefit and the like.

A method and apparatus is provided for non-invasively mixing ingredients in closed containers. Mixing is performed by inducing waves in the liquid to be mixed. This is achieved by rocking the container in precise phase so as to produce resonance. With the waves moving back and forth in resonance, it is possible to mix with very low energy requirements compared to prior art. Mixing ingredients with resonant waves in a closed container eliminates the need for an invasive mixer and has obvious advantages in minimizing contamination. This makes the device ideal for biological processing that typically require sterile operation.

A wastewater treatment system has two separate but interlinked tanks containing four different zones, namely aerobic, microaerophilic, anoxic and anaerobic, for the biological treatment of the wastewater, as well as two clarification zones and a filtration unit for separation of solids from liquid. The first tank contains the aerobic, microaerophilic and anoxic zone as well as a clarification zone, while the second dank includes the anaerobic zone, a solid-liquid separation zone and a filtration unit. The aerobic zone is an airlift reactor that contains air diffusers at the bottom of the zone to introduce air into the zone. The air bubbles mix the liquid and its content of microorganisms, and provide oxygen for the aerobic biological processes that take place in this zone. Aeration also produces circulation of liquid between the aerobic zone and its adjacent microaerophilic and anoxic zones that are located at the sides and under the aerobic zone, respectively. The aerobic zone contains suspended microorganisms of heterotrophic and autotrophic groups that grow inside the circulating liquid, known as mixed liquor. Within the volume of the aerobic zone, loose carrier material or stationary objects are disposed to support the attachment of microbial biomass and the formation of microbial biofilm.

A Rhodococcus ruber Em (CGMCC No.0868) features that its cells, cell suspension, or immobilized cells can degradate the paraffin and polycyclic arylhydrocarbon because the paraffin and polycyclic arylhydrocarbon are used as its only carbon source and energy source for growing to generate the bioemulsifier of ester. Said emulsifier can obviously decrease the surface tension of aqueous solution, has strong emulsifying power to ester substance, and can increase the solubility of paraffin and polycyclic arylhydrocarbon in water, so it can be used for treating the oil-contained sewage and repairing the petroleum polluted soil.

The invention discloses a biological disposing method of waste water through coupling the anaerobic ammonoxidation and methanation denitrification, which is characterized by the following: inoculating the particle sludge with methanation, denitrification and anaerobic ammonoxidation activity in the expansion grain sludge bed (EGSB); inoculating aerobic ammonoxidation bacteria in the biological aerating filter (BAF) or SHARON technique or SBR reactor; connecting the EGSB reactor and BAF or SHARON technique or SBR reactor; realizing the biological disposal of waste water through controlling pH value, temperature, dissolved oxygen, external reflow rate, load velocity, oxidizing reducing potential and organic COD density, ammonia nitrogen density.

The invention discloses a kitchen waste disposal method, which comprises the following steps of: (1) screening and crushing kitchen waste; (2) carrying out damp and hot hydrolytic treatment; (3) carrying out solid-liquid separation; (4) carrying out fat separation; (5) pulping; (6) carrying out fermentation pretreatment, and (7) converting solid matter microorganism. According to the kitchen waste disposal method disclosed by the invention, from the view point of improving the biodegradation efficiency and the biogas production efficiency of the kitchen waste, the methane is prepared from compound microorganism bacterium agent and the processed kitchen waste by mixing and fermenting, and the microorganism bacterium agent fundamentally solves the problems of high saline matter and high fat of the kitchen waste and odour in a biological treatment process, and greatly improves the efficiency of producing the methane by anaerobic digestion.

The invention discloses an urban sewage treatment system and purification method and belongs to the technical field of sewage treatment. The sewage treatment and purification method comprises the steps of collection, physical precipitation, chemical precipitation, anaerobic biological treatment, anoxic biological treatment, aerobic biological treatment, adsorption, disinfection, ultrafiltration membrane filtration and sludge treatment in sequence. According to the method, a physical precipitation method, a chemical precipitation method and a biological purification method are used comprehensively to perform step-by-step classification treatment on different pollutants, the purification efficiency is high, the effluent quality is good, the nitrogen and phosphorus treatment capacity is higher, operation and maintenance are convenient, management is simple, and popularization and use can be realized.

A process for the production of highly purified water 44 from Fischer-Tropsch reaction water 12 includes distillation 14 as a primary treatment stage, biological treatment including anaerobic digestion 20 and aerobic digestion 22 as a secondary treatment stage, solid-liquid separation 32 as a tertiary treatment stage and a dissolved salt and organic removal stage 40 as final treatment stage.

The invention relates to a bacterial strain of Rhodococcus ruber P14 CGMCC NO.2343. The bacterial strain has the characteristic of floating up from oil matters; the bacterial strain can grow by taking the oil matters as unique carbon source and energy source and degrade the oil matters; and the bacterial strain can grow by taking polycyclic aromatic hydrocarbon as unique carbon source and energy source and degrade hydrocarbon compounds, such as phenanthrene, pyrene, benzopyrene, and the like. The bacterial strain can degrade the oil matters and hydrocarbon compounds, especially the polycyclic aromatic hydrocarbon can be applied in the biological treatment of oily waste water and the biological repair (biological remediation) of oil-contaminated soil.

The invention discloses a membrane-process integration salt recovering and biochemical processing method for waste water from high-salinity epoxy resin production, purifying and splitting waste water, i.e. processing the washing waste waters of different salinities and concentrations, respectively: concentrating little amounts of waste water with high salinity and high concentration by membrance distillation integration technique and screening out salt; preprocessing large amounts of rinsing waste water with low salinity and low concentration of organic matters and then processing in a two-stage biochemical processing system, to meet the specified effluent standard. And it largely solves the problem of serious inhibition of high-salinity organic waste water to the biotreatment and adopts salt recovering and water recycling processes, and large amounts of waste heat can serve as a heat source of membrane distillation and the afterheat of the waste water can be used by the membrane distillation.

A process for the production of purified water from Fischer-Tropsch reaction water wherein the purified water is an aqueous stream having a COD of between 20 and 500 mg / l, a pH of between 6.0 and 9.0, a suspended solids content of less than 250 mg / l and a total dissolved solids content of less than 600 mg / l, and wherein the process includes at least the steps of a primary treatment stage comprising an equilibrium staged separation process having at least one stage for removing at least a fraction of non-acid oxygenated hydrocarbons from the Fischer-Tropsch reaction water to produce a primary water enriched stream, a secondary treatment stage comprising liquid-liquid extraction for removing at least a fraction of organic acids from at least a portion of the primary water enriched stream to produce a secondary water enriched stream, a tertiary treatment stage comprising biological treatment for removing at least a fraction of acidic oxygenated hydrocarbons from at least a portion of the secondary water enriched stream to produce a tertiary water enriched stream and a quartic treatment stage comprising solid-liquid separation for removing at least some solids from at least a portion of the tertiary water enriched stream.

A membrane filtration system comprising one or more submerged ultrafiltration or microfiltration membrane assemblies at ambient pressure, each membrane assembly positioned 100-240 mm from a nearest wall, baffle, or adjacent membrane assembly and no more than 1 meter above a floor and at least 150 mm below the liquid level. Mixed liquor is discharged underneath each membrane assembly to create a vertical flow velocity in a range of 1-8 mm / second along an entire length of the membrane assembly. In a sequenced batch reactor system, a coarse bubble air diffuser for scouring each membrane assembly is supplied with air only during the backwash cycle of the filtration system and not during the filtration cycle. In a membrane bioreactor system, the biological treatment section is physically separated from the filtration section and fine bubble air diffusion is used in the biological treatment section.

The present invention relates generally to waste treatment methodologies and technologies for treatment and disposal of organic wastes. More specifically, in a preferred embodiment of the present invention, there is described a system and methodology for treating organic waste by wet oxidation processes or wet air oxidation processes (carried out on the surface or subsurface) followed by introduction of the treated waste mixture into a disposal well and injection of the mixture into a suitable geological formation. Ideally, the mixture is filtered prior to injection into the formation. The method and apparatus of the present invention provide increased waste treatment throughput as compared to conventional use of wet oxidation or wet air oxidation followed by surface biotreatment.

A method of biologically treating wastewater with an integrated fixed film activated sludge process. The integrated fixed film activated sludge process includes biomass suspended in mixed liquor and biomass disposed on carriers. Under certain conditions the dissolved oxygen concentration in a reactor that includes the mixed liquor, biomass suspended in the mixed liquor, and the biomass on the carriers, biological treatment is performed primarily by the biomass in the mixed liquor. This is achieved by controlling or maintaining the dissolved oxygen concentration in the reactor at a relatively low concentration. When the biomass suspended in the mixed liquor is unable to adequately biologically treat the mixed liquor, the dissolved oxygen concentration in the reactor is controlled or maintained at a relatively high concentration. This enables biomass on the carriers to contribute more to the biological treatment of the mixed liquor than when the dissolved oxygen concentration was maintained relatively low.

A method and mixture for denitrifying aerobic bacterial compositions and for aerobic methods for biological treatment of aqueous systems polluted by nitrogen waste products. A mixture of and limited to bacillus bacteria are added to the treatment subject. Optionally enzymes can be added to the mixture. Optionally a particulate carbon ingredient can be placed into the treatment subject. Optionally a living tissue ingredient can be used.

A method and system is provided for treating wastewater. In one process, wastewater is directed into a treatment tank and biologically treated. The biologically treated wastewater is directed as mixed liquor from the treatment tank to a bottom portion of a downstream filtration tank having at least one submerged membrane module that extends across substantially the entire cross sectional area of the filtration tank mixed liquor is directed from the bottom of the filtration tank upwardly into the membrane module such that substantially all of the mixed liquor received in the bottom of the filtration tank flows through the membrane module. As the mixed liquor flows vertically through the membrane module, the method includes inducing at least some of the mixed liquor through walls of one or more membrane filters that form a part of the membrane module, producing a permeate stream. The remaining mixed liquor passing through and from the membrane module is referred to as a non-permeate stream and the non-permeate stream, or at least a substantial portion thereof, is recirculated to the treatment tank. The filtration tank is sized relative to the membrane module and the process is carried out such that there is no substantial recycle of mixed liquor in the filtration tank itself. Although mixed liquor may be recirculated from the filtration tank back to the treatment tank and then back to the filtration tank and so forth and so on, once the mixed liquor in the filtration tank makes one pass through the membrane module the mixed liquor is recycled back to the treatment tank and generally not permitted to be recycled back through the membrane module without first returning to the treatment tank.

The invention discloses an efficient biological treatment method for polymer-containing sewage in an oil field and relates to a treatment method for the polymer-containing sewage. The invention solves the problems in the existing polymer-containing sewage in the oil field that the biochemical property of the sewage is pool, the treatment is difficult, the investment is big, the process operation is unstable, and the environmental requirement can not met. In the method, 1, after the polymer-containing sewage is treated by the air flotation process, the produced sewage is intensified biologically by adopting the anaerobic process; 2, the effluent produced by the anaerobic process is intensified by adopting the aerobic process, and the intensified effluent enters a filter system; 3, the effluent produced by the filter system enters a secondary sedimentation tank, namely, the efficient biological treatment for the polymer-containing sewage in the oil field is finished. The method realizes the biological treatment for the polymer-containing sewage, the biochemical property of the contained polyacrylamide is good, and the whole process can realize that the treatment for the polymer-containing sewage is stable, the treatment is easy, the investment is small, no secondary pollution is caused, and the environmental requirement is met.

The invention relates to a preparation method for a compound fungus agent for specifically degrading an organic matter for a biological enhancing water treatment system. The compound fungus agent is added into a biological treatment process, has high biological activity, a stable effect and low cost, is easy to adsorb on the surface of a carrier and is difficult to lose. The preparation method issimple and practical, and has a short preparation period and low cost. The compound fungus agent comprises the following four strains: 20 to 30 percent of pseudomonas-stutzeri, 20 to 30 percent of pseudomonas putida, 10 to 20 percent of pseudomonas-pertucinogena and 30 to 50 percent of bacillus subtilis. The compound fungus agent is prepared by combining and screening the strains, performing slant culture and primary culture, mixing according to the proportion, and performing secondary cycle culture. The preparation method is widely used in a biological enhancing water treatment process, has a long-term and stable operation period, and has specific degradation ability for toxic and harmful organic pollutants such as halogenated hydrocarbons, phenol, benzoic acid, aromatics, polycyclic aromatic hydrocarbon, heterocyclic compounds, phthalic acid ester and the like.

The invention belongs to the field of the environmental engineering polluted site soil restoration, and particularly relates to a method for restoring polychlorinated biphenyl polluted site soil. The method comprises the following steps: synergistic elution, primary chemical treatment, secondary chemical treatment, anaerobic organism treatment and aerobic organism treatment. For the soil restoration problem of the real polychlorinated biphenyl polluted site, a restoration process combining the chemical treatment of chemical elution, acid regulation, zero-valent iron dechloridation, iron carbon micro-electrolysis, catalytic oxidation, biological anaerobic dechloridation and biological aerobic oxidation and biological treatment. Various effects such as chemical dechloridation (dechloridation effect of zero-valent iron), chemical oxidation (iron carbon micro-electrolytic effect of the zero-valent iron and active carbon and catalytic oxidation effect of oxidized medicine), biological anaerobic dechloridation effect and biological aerobic oxidation effect are reasonably integrated in one technology, so that the optimization of technology, economy, practicability and feasibility is realized.

The invention discloses a method and device for treating nondegradable organic waste gas by combining low-temperature plasma with organisms. After being collected, organic waste gas is sequentially treated through a low-temperature plasma reactor and a biological treatment reactor and finally exhausted to the atmosphere through a chimney. In the low-temperature plasma reactor, polycyclic aromatichydrocarbon, halogenated hydrocarbon, heterocycle compounds and an organic nitrile compound which are insoluble in water and nonbiodegradable are oxidized into low-carbon organic acid, alcohol, esterand other organic compounds which are soluble in water and biodegradable by utilizing substances with strong oxidizing property, such as O3, OH., H2O2, O. and high-energy electrons generated by high voltage discharge. In the biological treatment reactor, the organic acid, the alcohol, the ester and other organic compounds are further converted into CO2, H2O and other inorganic compounds under theaction of microorganisms. Through the treatment, the total purification efficiency of nondegradable organic compounds containing benzene, methylbenzene, dimethylbenzene, phenol and the like in waste gas can be up to over 90 percent.

The invention discloses a technology for treating domestic sewage by realizing partial short-cut nitrification, sludge fermentation coupling denitrification and anaerobic ammonia oxidation in a sequencing batch reactor, and belongs to the field of the sewage sludge biological treatment. The technology comprises an inlet water tank, a partial short-cut nitrification reactor (PN-SBR), an intermediate water tank, an anaerobic ammonia oxidation coupling sludge fermentation and denitrification reactor (ASFD-SBR), and an outlet water tank. The partial short-cut nitrification is performed in the partial short-cut nitrification reactor (PN-SBR), and a part of ammonia nitrogen in raw water is converted to nitrite nitrogen. The influent ammonia nitrogen and the nitrite nitrogen are converted to a nitrogen gas and a little of nitrate nitrogen by anaerobic ammonium oxidation bacteria in the anaerobic ammonia oxidation coupling sludge fermentation and denitrification reactor (ASFD-SBR), and the generated nitrate nitrogen is reduced to the nitrogen gas by a carbon source generated by sludge fermentation, wherein static bed filler is used for retaining the anaerobic ammonium oxidation bacteria, and denitrification and sludge fermentation processes are performed in floc sludge. The technology is capable of saving energy consumption, and simultaneously realizing the deep denitrification of theurban domestic sewage in a low carbon nitrogen ratio (C / N) and the recycling of the sludge.

The invention discloses a method for treating waste gas with a biological trickling filter tower: the waste gas is passed through the bottom of the biological trickling filter tower, treated by the biological trickling filter tower, and the treated waste gas is discharged from the top, and the biological trickling filter tower is composed of The bottom of the tower with exhaust gas inlet, the tower body, and the top of the tower equipped with exhaust gas outlet are composed. The tower body is composed of several biological treatment units stacked from bottom to top, and the biological treatment units on adjacent layers are arranged There is a liquid interlayer, and the air vents for the adjacent layers are arranged on the liquid interlayer, and each layer of biological treatment units is independently equipped with a nutrient solution spray system and a temperature control device from top to bottom. Biological packing layer and nutrient solution receiving pool; the invention increases the processing load of the unit packing; improves the plugging problem of the packing layer, avoids the occurrence of channeling phenomenon, and has uniform and sufficient gas-liquid contact; packing replacement and backwashing are more convenient; the process Economical, suitable for the purification treatment of complex volatile organic mixed pollutants.

The invention discloses a halophilic bacterial agent and a preparation method thereof as well as a biological treatment system fixed with the bacterial agent and application thereof. In the invention, strains are screened from sewage, sludge and soil to be prepared into a bacterial agent, wherein the bacterial agent comprises four strains including Providenciasp. CJ-4, Oceanobcillussp. CJ-10, Brevibacterium epidermidis CJ-12 and Halomonassp. CJ-13. The invention also provides the biological treatment system fixed with the bacterial agent and a method for treating waste water by using the same. The bacterial agent disclosed by the invention has stronger degradation capability on phenolic wastewater, can adapt to high-salt environments and has very good degradation effects under an environment with the salt content of 2-25% and the phenol concentration of 2500 mg / l; and compared with the traditional active sludge method, the bacterial agent has obvious advantages in the performance of degrading phenolic compounds, and the degradation effect on the phenolic compounds in water can reach more than 99.9%.