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| Number | Title | Issue Date |
| 4384878 | Method and apparatus for composting compostable organic materials such as organic wastes and strongly aqueous fossile materials In a method of continuously composting material capable of being composted by the action of aerobic microorganisms in a reactor, the material is caused to pass through the reactor as a single mass from the top thereof to the bottom thereof from an upper l... | 05/24/1983 |
| 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 processing chamber (8) is brought into contact with the organic ... | 10/26/1982 |
| 4306978 | Method for lime stabilization of wastewater treatment plant sludges A method for the lime stabilization of wastewater sludge, includes the steps of dewatering sludge so as to produce a sludge cake containing from about 10 to 60% by weight of dry solids and rapidly and intimately mixing and reacting the sludge cake with ca... | 12/22/1981 |
| 4297122 | Process for the biological degradation of organic-containing waste matter A biological degradation process for the treatment of organic containing waste-matter for producing a waste-matter sludge material, the process containing a step for contacting microorganisms with the organic-containing waste matter, which comprises addin... | 10/27/1981 |
| 4288241 | Method and apparatus for composting sludge Sludge is composted by arranging the sludge in a pile over a conduit and air is forced into the pile in spaced time intervals and air is drawn from the pile into the conduit in alternate time intervals. The perforated conduits are adapted to be placed under an... | 09/08/1981 |
| 4236910 | Method of biologically decomposing organic material, and apparatus for carrying out the method The invention is concerned with a method of biologically decomposing organic material by the action of microorganisms thereon in the presence of an oxygen-gas containing medium, in which method the material is charged to the top of a vessel and caused to ... | 12/02/1980 |
| 4229202 | Wastewater treatment with ultraviolet disinfection and increased capacity A method and an apparatus for treating wastewater such as sewage are disclosed. Designed principally for complete on-site wastewater treatment and disposal, the system separates wastewater into liquid wastes and solid wastes by filtration, treats the liqu... | 10/21/1980 |
| 4226712 | Method and apparatus for treating water containing wastes A method and apparatus for treating a water containing waste such as industrial sludges and animal excrements. The method comprises a first step of mixing the waste with an alkaline earth metal oxide such as calcium oxide to obtain a preliminarily dried m... | 10/07/1980 |
| 4214985 | Method for sewage treatment with bacteria A process for the treatment of sewage wherein the sludge is innoculated with a bacteria, L. plantarum, and a carbohydrate such as lactose is admixed therewith. The addition of the bacteria and the carbohydrate without more, drops the pH of the sludge to b... | 07/29/1980 |
| 4198211 | Microbiological processes to produce fuel gas A process of treating an animal manure slurry susceptible to aerobic composting and anaerobic microbiological degradation with the production of a fuel gas, comprises: separating the slurry into a first, solids concentrated, fraction of relatively coarse ... | 04/15/1980 |
| 4193206 | Processes for drying sewage sludge and filtering water A process for drying and granulating sewage sludge. Wet sewage sludge is dried in either a thermal drying zone or a mechanical dewatering zone comprising a cylindrical chamber having a porous wall and a centrally mounted rotating helical screw conveyor wh... | 03/18/1980 |
| 4190528 | Process for biological purification of waste water Process for the biological purification of waste water in which a suspension of the surplus sludge formed during the purification is hydrolyzed in a basic medium and at elevated temperatures.... | 02/26/1980 |
| 4185680 | Process for producing useful concentrated slurries from waste material Domestic refuse containing inorganic and organic material is treated to separate off the inorganic material, after which the organic material, with sewage sludge, is assimilated in a digestor by a microorganism to produce a combustible gas, and a dilute s... | 01/29/1980 |
| 4180459 | Process of making agricultural product from organic sewage sludge An acidic organic agricultural product is made by conditioning organic sewage sludge with amounts of FeCl3 and sugar factory waste lime to provide an acidic conditioned sludge, of pH greater than 3.0 but less than 5.7 and then mechanically dewa... | 12/25/1979 |
| 4174371 | Integrated solar heated resource transformation system A system providing for the temperature and humidity controlled aerobic composting of organic materials is described. The system includes at least one composting chamber, at least one thermal mass, ducts for conveying air from the vicinity of the thermal m... | 11/13/1979 |
| 4161825 | Plasticized organic waste A composition of matter comprising a plasticized organic waste, preferably dried sewage sludge. Fibrous reinforcing media may also be present. Plasticization of the dried organic waste is performed by the simultaneous application of an elevated temperatur... | 07/24/1979 |
| 4162153 | High nitrogen and phosphorous content biomass produced by treatment of a BOD-containing material An organic product material having a high nitrogen and phosphorous content is produced as the product of a biological system for the treatment of a BOD-containing influent which also contains phosphorous and fixed nitrogen. The biological treatment system... | 07/24/1979 |
| 4146382 | Method of and apparatus for the treatment and purification of refuse, or refuse/sewage sludge mixtures by means of composting Method and apparatus is disclosed for composting material such as refuse and preferably a mixture of refuse and sewage sludge. The material is piled in such a way that transverse tunnels are provided whereby natural air circulation is obtained into and th... | 03/27/1979 |
| 4137158 | Process for tertiary treatment of waste waters from anaerobic digestion treatment process A process for the tertiary treatment of biochemical waste waters comprising the following 4 main steps; (1) adding milk of lime to waste water from the anaerobic digestion treatment process to render the waste water alkaline and recovering NH3 ... | 01/30/1979 |
| 4128946 | Organic waste drying process A process for drying organic waste, such as sewage sludge, by contacting the organic waste with hot vapors wherein the dried material is extruded to form compacted granules having good flow characteristics and suitable for application by commercial fertil... | 12/12/1978 |
| 4121349 | Organic waste drying process A process for drying organic waste, such as sewage sludge, by contacting the organic waste with hot vapors. In the preferred embodiment, adsorption of hydrocarbons vaporized during the drying step is achieved by mixing recycled dried solids into the dryin... | 10/24/1978 |
| 4099336 | Organic waste drying process A process for drying organic waste, such as sewage sludge, by contacting the organic waste with hot vapors wherein the dried material is plasticized and extruded to form compacted granules having good flow characteristics and suitable for application by c... | 07/11/1978 |
| 4098006 | Organic waste dewatering and drying process A process for drying organic waste, such as sewage sludge, by contacting the organic waste with hot vapors. Partial dewatering of the organic waste is achieved by admixture with a recycled portion of dried solids followed by extrusion of the mixture. The ... | 07/04/1978 |
| 4078094 | Process for producing an animal feed and fertilizer ingredient from animal manure A process for producing an animal feed and a fertilizer ingredient from animal manure which comprises acid solution and either wet or dry manure. The essentially basic minerals contained in the manure chemically react with the acid to form soluble salts. ... | 03/07/1978 |
| 4076515 | Method for treatment of digester supernatant and other streams in wastewater treatment facilities Digester supernatants and/or liquors from sludge dewatering are reacted with an excess of an alkaline reagent having a stronger cation than the ammonium ion and the reaction product is separated into a solution containing aqueous ammonia and solids. The a... | 02/28/1978 |
| 4070175 | Method of processing cattle excrement A method of separating from ruminant animal feces the undigested fibrous material that is preponderantly short pieces which consist of bundles of capillary tubes. The feces are mixed with urine, water from animal washing and preparation for milking, and w... | 01/24/1978 |
| 4056380 | Method of producing an organic soil additive and the product thereof The present disclosure is directed to a method of producing an organic soil additive from shreaded water hyacinths and a mixture of secondary sewage combined in spaced apart heaps for aeriation and composting with subsequent steam treatment to produce a p... | 11/01/1977 |
| 4046689 | Method and apparatus for transporting sludge while rendering it for conversion into fertilizer The present disclosure is directed to a method and apparatus for rendering sludge and effluent into state usable for conversion into fertilizer while transporting the sludge and effluent from the sewage system to a fertilizer processing plant. The apparat... | 09/06/1977 |
| 4038180 | Process of dewatering sewage sludge Sludge from a municipal or industrial sewage treatment facility is mixed with a mineral acid or anhydride thereof to release the entrapped water in the sludge. The remaining mixture of sludge solids and diluted acid or anhydride is then mixed with a basic... | 07/26/1977 |
| 4038181 | Process for dewatering sewage sludge A process for dewatering sewage sludge having a water content on the order of 75% to 95% and previously untreated for the release of such water. The sludge is mixed with a chemical selected from the group consisting of urea and the common ammonium and pot... | 07/26/1977 |
| 4012219 | Method for reclaiming variegated wastes A method for reclaiming variegated wastes such as garbage, sewage, and saline dredging spoils includes the primary step of desalinization of the dredging spoils by draining off the salty water. The garbage is cleaned of non-organic material, and the remai... | 03/15/1977 |
| 4010098 | Resource recovery from disposal of solid waste and sewage sludge The treatment of solid waste and sewage sludge with the recovery of natural resources comprising subjecting all or at least a portion of the sewage sludge to wet oxidation reaction to reduce the COD by an amount of at least 50% and preferably 50-85% and u... | 03/01/1977 |
| 3963470 | Process for treating decomposable organic waste materials A process for treating wastes containing organic solids by composting wherein previously composted and/or otherwise partially dried organic material of the same or similar type is periodically mixed with additional wet material so as to obtain a mixture h... | 06/15/1976 |
| 3963471 | Apparatus and process for producing an organic product from sewage sludge A completely integrated and automated apparatus by which liquid sewage sludge from any sewage or waste treatment plant may be processed into a completely dry, pelletized and sterilized product of an organic nature containing nutrients valuable for the sup... | 06/15/1976 |
| 3950562 | Process and apparatus for removing ash and inorganic compounds from cattle manure In reclaiming nutrients from manure, steps are taken to remove both insoluble and soluble ash components, thereby preventing their buildup to possibly dangerous levels when the reclaimed nutrients are used as recycled feed. After initial milling of the ma... | 04/13/1976 |
| 3942970 | Process for treating sewage sludge and fertilizer products thereof An apparatus for and a process of treating sludge filter cake and the granular product thereof which comprises reducing the particle size and moisture content of the sludge cake, sterilizing the sludge cake by contacting the sludge cake with an N-methylol... | 03/09/1976 |
