Systems for treating water containing unwanted contaminants. More particularly, the present invention relates to waste water treatment systems including biological media used to aerobically or anaerobically treat solid and liquid waste in water for large and small-scale waste water systems in a way that minimizes the size of the system required to output high-quality, environmentally suitable water that is depleted of ammonia, nitrites, nitrates and other contaminants.

Process and apparatus for waste water treatment

PROBLEM TO BE SOLVED: To provide a method for anaerobic treatment which enables the execution of efficient acid fermentation using an acid fermentation tank fixed with an acid fermentation micro-organism, and an apparatus therefor. SOLUTION: The method for anaerobic treatment treats organic sewage or organic waste by two phase anaerobic treatment comprising the acid fermentation process and the methane fermentation process using the acid fermentation tank fixed with an acid fermentation micro-organism by an upflow countercurrent anaerobic sludge bed treatment apparatus having multi-stepwise gas-liquid-solid separating parts formed by an apparatus body side wall and baffle plates, and the apparatus therefor is also provided. COPYRIGHT: (C)2009,JPO&INPIT

Method and apparatus for anaerobic treatment

PROBLEM TO BE SOLVED: To provide a methane fermentation method which can control the amount of generated undecomposed substances and the clogging of piping etc due to the undecomposed substances, perform stable methane fermentation treatment for a long time even when treating slurry containing a relatively large amount of oil and fat, and reduce running costs SOLUTION: In the methane fermentation method, organic waste is converted into slurry in a slurry regulating tank to be fed in a methane fermentation tank, and the slurry is subjected to methane fermentation treatment in the methane fermentation tank to recover resources, such as biogas The concentration of oil and fat in the slurry in the slurry regulating tank, and the ratio of saturated fatty acids contained in the oil and fat are measured, and the dilution ratio of the slurry is set according to the concentration of the oil and fat in the slurry and the ratio of the saturated fatty acids contained in the oil and fat, thereby the concentration of the oil and fat in the slurry is regulated and/or the holding time of the slurry in the methane fermentation tank is regulated COPYRIGHT: (C)2006,JPO&NCIPI

Methane fermentation method

PROBLEM TO BE SOLVED: To provide a method and an apparatus for methane fermentation which allow keeping a high decomposition rate in a short time without a complicated configuration of the apparatus. SOLUTION: The methane fermentation apparatus includes the first sludge concentration measuring means 10 of measuring the sludge concentration of a fermented liquid in a methane fermentation tank 2, the second sludge concentration measuring means 20 of measuring the sludge concentration in a predetermined part of a sludge sedimentation liquid formed by a gravity sedimentation means 3 and a controller 100 controlling the amount of liquid by comparing the sludge concentration measured by the first sludge concentration measuring means 10 with that measured by the second sludge concentration measuring means 20 and controlling so that the sludge concentration of the liquid returned to the methane fermentation tank 2 through a return line L2 is higher than the sludge concentration of the fermented liquid in the methane fermentation tank 2 and that the sludge concentration of the liquid discharged through a discharge line L6 is lower than the sludge concentration of the fermented liquid in the methane fermentation tank 2. The methane fermentation apparatus carries out methane fermentation by using the methane fermentation apparatus. COPYRIGHT: (C)2011,JPO&INPIT

Method and apparatus for methane fermentation

PROBLEM TO BE SOLVED: To provide a cleaning method and process capable of stably and efficiently performing the anaerobic treatment of oils and fats-containing wastewater or waste. SOLUTION: The ratio (a:b:c) of the concentration (a) of hydrogen producible acetic acid producing bacteria, the concentration (b) of hydrogen assimilable methane producing bacteria and the concentration (c) of acetic acid assimilable methane producing bacteria in the sludge within a reaction tank is monitored in an anaerobic treatment process for an oils and fats-containing pollutant to control an operation condition so as to be able to hold the ratio within a predetermined range. COPYRIGHT: (C)2003,JPO

Anaerobic treatment method for oils and fats-containing pollutant

PROBLEM TO BE SOLVED: To provide a cleaning method, system and apparatus capable of stably and efficiently performing the anaerobic treatment of grease-containing wastewater or waste SOLUTION: In one embodiment, a method for cleaning grease-containing wastewater or waste by anaerobic treatment includes pretreatment, wherein grease decomposing enzyme or a microorganism forming this enzyme is allowed to act on grease to decompose it, and treatment for anaerobically treating the pretreated wastewater or waste and the concentration of higher fatty acid in the anaerobic reaction system is monitored during anaerobic treatment to be controlled In other embodiment, anaerobic or aerobic microorganisms are introduced into the anaerobic treatment process to accelerate the decomposition of higher fatty acid

Method and system for anaerobically treating grease pollutant

PROBLEM TO BE SOLVED: To provide an anaerobic treatment device capable of enhancing a conversion ratio to methane and reducing the volume of excess sludge by simply efficiently making an organic solid soluble and low-molecular, and a process. SOLUTION: The anaerobic treatment device of waste 1 containing the organic solid comprises a first anaerobic reactor 2 for carrying out solubilization and acid fermentation under an anaerobic condition, a second anaerobic reactor 5 for carrying out methane fermentation under the anaerobic condition, and a liquid feed device for feeding a liquid from the top of the first anaerobic reactor 2 to the second anaerobic reactor 5 while keeping the anaerobic condition, wherein the first anaerobic reactor 2 includes an agitation device for agitating a material to be treated and a control mechanism of forming a solid concentration distribution concentrating the material to be treated in a vertical direction from the top to the bottom in the first anaerobic reactor 2 by controlling the agitation device and wherein the first anaerobic reactor 2 has a tapered shape gradually narrow from the top to the bottom, arranges a solid-liquid separation device at the rearmost stage of the second anaerobic reactor 5 and includes a recirculation pipe for introducing a part of the material to be treated concentrating the obtained solid into the first anaerobic reactor 2. COPYRIGHT: (C)2008,JPO&INPIT

Anaerobic treatment process and device of organic solid waste

PROBLEM TO BE SOLVED: To provide a method for detecting a methanogen and an acid forming bacterium, which exist in the treated sludge obtained by subjecting organic waste, waste water or the like to methane fermentation and are related to methanation, and evaluating the activity of the methanogen and consequently to provide an adequate operation management index of a methane fermentation apparatus and a method for controlling a process. SOLUTION: The method for controlling an anaerobic treatment process is characterized in that the ratio of a volatile organic acid forming rate to a methanation rate in a methane fermentation system is kept equal to or lower than 10.0. COPYRIGHT: (C)2008,JPO&INPIT

Method for evaluating and controlling activity and methanation ability of anaerobic microbe in methane fermentation system

PROBLEM TO BE SOLVED: To provide an anaerobic treatment method which can carry out a suitable treatment even if not depending operation of an operator who is especially skillful and makes methane generation worse a little, when treating an organic waste, waste water, etc. by an anaerobic treatment, namely, a methane fermentation process. SOLUTION: The anaerobic treatment method of the organic waste and/or waste water has (1) the step of specifically detecting/quantitatively determining a specific microorganism (group) which contributes to a decomposition reaction of each substrate and intermediate metabolite contained in the organic waste and/or waste water, (2) the step of quantitatively determining the substrate and the intermediate metabolite specific to the microorganism (group), and (3) the step of, using quantitative data of each microorganism (group) from the step (1) and quantitative data of each substrate and intermediate metabolite from the step (2), determining the maximum capturing speed per bacterial cell of each substrate and intermediate metabolite by each microorganism (group), and/or the half saturated constant for each substrate and intermediate metabolite of each microorganism (group), and a biological reaction in the anaerobic treatment process is stoichiometrically and/or reaction kinetically analyzed so that the determined treatment condition is applied. COPYRIGHT: (C)2008,JPO&INPIT

Treatment method and apparatus of organic waste by anaerobic microorganism

PROBLEM TO BE SOLVED: To provide a nucleotide primer as a quantitative detection means suitable for the kinetic analysis for main microorganisms relating to methane formation in a methane-fermentation microbial system, a method for the evaluation of methane fermentation microbial system using the primer and an index useful for the monitoring and control of the kinetics of microorganism for the stable operation of the system. SOLUTION: The method for the evaluation of microbial treatment activity in a methane fermentation microbial system contains the detection of microbial group participating in the methane formation in the methane-fermentation microbial system by carrying out PCR method to a nucleic acid specimen sampled from the methane-fermentation microbial system using a specific oligonucleotide primer. COPYRIGHT: (C)2007,JPO&INPIT

リンユンハオ

Papers

Method and system for anaerobically treating grease pollutant

Anaerobic treatment process and device of organic solid waste

Method for evaluating and controlling activity and methanation ability of anaerobic microbe in methane fermentation system

Treatment method and apparatus of organic waste by anaerobic microorganism

Nucleotide primer for evaluation of methane-fermenting microbial system and evaluation method using the same

リンユン ハオ

Papers

Method and system for anaerobically treating grease pollutant

Anaerobic treatment process and device of organic solid waste

Method for evaluating and controlling activity and methanation ability of anaerobic microbe in methane fermentation system

Treatment method and apparatus of organic waste by anaerobic microorganism

Nucleotide primer for evaluation of methane-fermenting microbial system and evaluation method using the same

リンユンハオ