1436 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.

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 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.

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 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.

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.

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 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 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%.

The invention discloses a biological nitrogen removal method based on anaerobic Feammox and application thereof. The biological nitrogen removal method comprises the following steps that sludge containing Feammox microorganisms is added into an anaerobic reactor, ammonia containing wastewater is led into the reactor, NH4 + in the Fe (III) NTA oxidized wastewater is utilized to generate NO2-, and then nitrogen treatment is performed. The biological nitrogen removal method comprises the specific steps that 1, the Feammox enriched microorganisms are cultivated: the sludge is pretreated and the Feammox microorganisms are cultivated; 2, the Feammox microorganisms are utilized to perform wastewater treatment; 3, nitrogen removal treatment is performed by using the liquid collected after anaerobic Feammox treatment. The method has the advantages of lower power consumption, few carbon source demands, less greenhouse gas emissions, less produced NO3- and the like, is lower in investment and operating costs and wide in application prospect.

The invention is a pollutant aerobic-biodegradation breathing measuring method and device, relating to a method and device for measuring oxygen utilization ratio in the course of processing waste water by aerobes. And the measuring method comprises the steps of: checking dissolved oxygen sensor, keeping temperature of water tank constant, putting in microbial mixed solution, blending, circulating mixed solution, setting parameters, putting in to-be-measured sample and calculating; and the measuring device comprises water tank, magnetic blending mechanism, aeration mechanism, aeration chamber, breathing chamber, measuring chamber, pH sensor, dissolved oxygen sensor, signal transmit lines, transducer terminal box, computer and oxygen utilization ratio measuring software. And the invention has advantages of less interference, high testing accuracy and frequency, high instrument automation degree, etc. and it is applied to the aspects of city sewage composition characterization, inlet water toxicity detection, evaluation and early- warning in sewage factory, process control and operation management in sewage factory, etc.