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4626354 |
Method for anaerobic treatment of high strength liquors
A process for treating high strength BOD containing liquors includes the step of mildly mixing and contacting the liquors with anaerobic bacteria and a powdered adsorbent support medium to remove a...
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4622982 |
Continuous method of denitrating tobacco extracts
An improved method of reducing the nitrate, nitrite and ammonium compound content of an aqueous tobacco extract employing microorganisms is described. The nitrates, nitrites and ammonium compounds...
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4620928 |
Process for reducing the hydrogen sulfide content in anaerobic decomposition processes, especially in sludge digestion processes
A process for the anaerobic digestion of sludge or for the anaerobic decomposition of organically contaminated waste waters while obtaining fermentation gas containing methane as the main...
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4614588 |
Method for sulfide toxicity reduction
A method and system for reducing the sulfur concentration of wastewater which is to be disposed of through anaerobic treatment. Wastewater high in sulfur content is fed to a reactor having a pH...
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4609460 |
Anaerobic purification equipment for waste water
A considerable portion of the gas developed by fermentation in an anaerobic purification equipment for waste water, together with buoyant sludge, is collected by at least one additional collecting...
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4604206 |
Staged anaerobic reactor
An industrial waste anaerobic digestion process takes place in a digester having separate sections within the digester, in which the acid forming and gas forming phases of the digestion process can...
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4597872 |
Method for anaerobic wastewater treatment
The invention relates to a method of treating wastewater from closed manufacture of mechanical or chemi-mechanical cellulose pulp, which treatment is carried out in a hydrolysis and acid...
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4579654 |
Apparatus for the anaerobic fermentation of organic waste material such as liquid manure
An apparatus for the anaerobic digestion of organic waste material such as manure in liquid condition include bringing the waste material in an acidification space with a roof collecting gas...
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4566469 |
Process for dissimilatory denitrification of tobacco materials
An improved process for the reduction of the nitrate content of tobacco materials via dissimilatory denitrification is disclosed wherein more rapid reduction of nitrate to nitrogen gas is effected...
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4565552 |
Method of producing biogas and compost
In the mesophile production of biogas, the temperature of the liquid used during anaerobic, methanogenic, fermentation is raised to the required temperature (about 35° C.) by aerobically...
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4559142 |
Split feed for the anaerobic biological purification of wastewater
In the anaerobic biological purification of wastewater containing organic substances, some of which have a low rate of metabolism in anaerobic microorganisms, e.g., undissolved and/or partly...
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4551250 |
Process for the anaerobic biological purification of wastewater
In a process for the anaerobic biological purification of wastewater containing organic pollutants, the wastewater to be purified is conducted through two series-connected reactors (2 and 5)...
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4534864 |
Process and device for the regeneration of a group of solid particles having a coating of a biological material
The solid particles 33' coated with a biological material are developed at the upper end of a bed 32 which is fluidized by a supply of water 3. The particles 33' are removed at 12 and decanted at...
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4532042 |
Process and apparatus for the continuous anaerobic decomposition of organic compounds
Process and apparatus for the continuous anaerobic decomposition of organic compounds in an aqueous liquid is effected, in accordance with the invention, in a fixed-bed reactor by microorganisms,...
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4530762 |
Anaerobic reactor
A method and apparatus for the anaerobic treatment of wastewater containing organic matter. The apparatus includes a closed tank to which the wastewater is delivered through liquid inlet means...
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4522721 |
Treating process of organic wastes
The present invention relates to a treatment process of anaerobically digesting organic wastes under an anaerobic condition for recovering methane from the organic wastes by fermentation effect of...
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4521310 |
Apparatus and method for the treatment of organic wastes
Apparatus for the anaerobic conversion of organic waste to biogas using a microbial biomass comprises a closed reactor (1) adapted to receive the organic waste, the reactor having a first chamber...
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4518399 |
Process for recovering gases from landfills
A process for treating a landfill for recovering methane therefrom wherein a mixture of methane and carbon dioxide is withdrawn from a central portion of the landfill and the carbon dioxide and...
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4514297 |
Bioreactor
A reactor for the anaerobic digestion of organic sludge and for the production of methane gas, comprises an essentially horizontal cylindrical vessel provided with an agitator rotating around an...
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4511370 |
Process for the utilization of household rubbish or garbage and other organic waste products for the production of methane gas
Non-organic substances are separated from household garbage and the organic substances are fed in proportioned manner into a mixing tank (5) and converted into slurry by adding liquid. The slurry...
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4505819 |
Method for the anaerobic degradation of organic material
A system for the anaerobic bacterial degradation of organic material in waste water, comprising introducing the waste water into a contact reactor, pumping the waste water into the bottom of a...
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4503154 |
Anaerobic digestion of organic waste for biogas production
A low solids aqueous suspension of organic waste is treated in at least four, e.g., six serial anaerobic zones at a temperature of less than 40° C. and under quiescent conditions to provide...
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4493770 |
Method and system of generating heat by biological decomposition of organic refuse
Heat can be recovered by biological generation of heat upon aeration of refuse, such as garbage or sludge, in an aeration vessel (11) by introducing oxygen-containing gas, such as air, in a closed...
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4491522 |
Anaerobic digestion process for organic wastes
The present invention relates to an anaerobic digestion process for organic wastes with a high efficiency and an improved recovery rate of methane. This process comprises the following steps: (1)...
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4482458 |
Process and apparatus for the anaerobic treatment of waste water in a filter including granular material
Waste water to be treated is introduced into a filter including granular material for supporting the biomass resulting from an anaerobic treatment operation. During such treatment operation biogas...
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4451372 |
Method and installation for purifying contaminating water
The specification discloses a method and installation for purifying waste. A tank (1) is fed with the waste and with a biological filter substrate, both of which are fermented within the tank....
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4437992 |
Process for controlling an aeration tank in an activated sludge sewage treatment
It is necessary for maintaining a good assimilating characteristic of microorganisms upon organic matter in an aeration tank to control a gas flow rate and a return sludge flow rate to optimum...
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4424064 |
Methane production from and beneficiation of anaerobic digestion of aquatic plant material
A process for improved methane production by anaerobic digestion of aquatic plant material at least a portion or all of which has been grown in organically polluted water. Mixtures of aquatic plant...
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4416779 |
Method for producing an aqueous solution of high phosphorous content
The invention relates to a method of producing an aqueous solution rich in phosphorous and recovering metal compounds in the purification of sewage-water or raw-water, in a plant which includes at...
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4409102 |
Process for removing contaminants from a stream of methane gas
A feed stream of digester gas from an anaerobic process is compressed to a predetermined pressure of about 300 p.s.i.g. and fed into an absorber at that pressure. Carbon dioxide and hydrogen...
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4400195 |
Method for the anaerobic digestion of solid organic waste
The present invention relates to a method wherein solid organic waste originating from plants or animals or both, is digested by an anaerobic fermentation, that is less labor, time and space...
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4396402 |
Gas production by accelerated bioleaching of organic materials
A process for gas production and accelerated bioleaching of organic materials by acid forming bacteria in beds of organic solids, such as landfills, passing the leachate of hydrolysis and...
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4388186 |
Sludge treating apparatus
A sludge treating apparatus comprises a centrifugal condensing machine for forcedly condensing a raw sludge produced by a waste water treating apparatus. The raw sludge condensed to approximately...
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4386159 |
Method of producing methane
Methane is produced by fermentation of organic material, wherein the organic material is finely ground to an average particle size of less than 3 mm, mixed with a seed sludge containing bacteria...
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4384956 |
Waste water purification
A novel process for the purification of waste water and/or waste water sludge comprising subjecting the waste water and/or waste water sludge to first a methane fermentation step, then a...
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4375412 |
Methods for the treatment of organic material and particularly sewage sludge
Anaerobic digestion of organic material, particularly biological sludge, such as sewage sludge, is carried out in a closed system having a first digestion tank and a second concentration and...
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4374199 |
Method for generation of bio-gas
Improved method for the production of bio-gas incorporating a magnetic field to situate magnetotactic bacteria in the reactive zone of a bio-gas producing digester.
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4372856 |
Process and system for anaerobic treatment of waste
The invention provides for a sealed mix tank having two chambers: one chamber mixes waste material and water to form a slurry and collect gas, particularly ammonia gas, during the digestive...
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4369194 |
Process for treating manures
The manure, which has been previously finely ground, is diluted (3) so as to form a liquid mixture containing not more than 4% of solid material. This mixture is fed into a bioreactor (6) of which...
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4356269 |
Plant for the production of methane
Production of methane from a substrate comprising an organic material, by way of example in a process by means of a culture of anaerobic and preferably thermophile microorganisms, which in a...
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4351729 |
Biological filter and process
A biological filter apparatus, and process for using the same, wherein organic pollutants in a waste water stream may be biologically degraded by a biomass of suitable microorganisms located on the...
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4350588 |
Biological fermentation device
Biological fermentation of organic matter is conducted in a single, unitary, integral vessel with both aerobic and anaerobic processes being conducted within that single vessel. Heat generated in...
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4342836 |
Continuous anaerobic digestor system
An improved anaerobic digestor system for producing methane gas from waste biomass includes closed provisions for continuously feeding the biomass for system digestion, for continuously advancing...
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4342568 |
Refuse disposal apparatus
Disclosed is a refuse disposal apparatus in which refuse fed into a fermenting vat can be disposed by subjecting the refuse to methane fermentation, the fermenting vat including a heating device...
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4334997 |
Anaerobic digester technology
The anaerobic, displacement-type digester is for the biological production of methane gas. The process involves the anaerobic digestion of solid waste and water or a sewage slurry to produce a...
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4329428 |
Methane production from and beneficiation of anaerobic digestion of plant material and organic waste
A process for improved methane production resulting in higher yield and higher production rates by anaerobic digestion of a mixture of plant material and organic waste. The process is suitable for...
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4328104 |
Process of demulsifying and converting emulsions of oils, greases and fats
It is proposed to demulsify and convert emulsions of oils, greases, and fats in that these emulsions are processed together with digested sludge or sludge liquor from a biological sewage treatment...
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4323367 |
Gas production by accelerated in situ bioleaching of landfills
A process for improved gas production and accelerated stabilization of landfills by accelerated in situ bioleaching of organic wastes by acid forming bacteria in substantially sealed landfills,...
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4321141 |
Method for processing waste
A method for processing biodegradable organic waste in an aqueous medium, which method comprises serially passing an organic waste-containing aqueous medium through a first, hydrolytic redox...
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4318993 |
Two phase anaerobic digester system
A two phase anaerobic digestion process in which an initial phase continually receives an organic feed for short detention times of less than two days under conditions which efficiently liquefy and...
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