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5356540 |
Pumpable aqueous slurries of sewage sludge
A pumpable aqueous slurry of sewage sludge as produced by the steps of (1) dewatering sewage sludge to produce an aqueous slurry having a solids content of about 10 to 25 wt. %; (2) pretreating...
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5352250 |
Process of treating lacquer coagulum and its use
The invention relates to a process for treating (recycling) lacquer coagulum containing lacquer overspray and layered silicate containing coagulating agents, in which the layered silicate...
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5344573 |
Method of recovery of printing ink wastes
A method for recovery of printing ink wastes is provided which greatly minimizes pollution problems attendant to the disposal of ink wastes, while permitting formulation of usable ink products from...
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5328353 |
Marine oil pollution fire fence
Oil pollution floating on a body of water is abated or contained by a fire fence generated by a series of devices which are interconnected by cables and anchored to form a barrier line. Each device...
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5318708 |
Local reclamation process
The local reclamation system includes an accumulation tank for a soiled solution. A tank outlet valve selectively allows a flow of the solid soiled solution into the remainder of the system. A...
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5306433 |
Method of changing compositions of circulating solvent in solvent dewaxing
An improved solvent dewaxing process in which a method and apparatus for continuous hot wash of a dewaxing filter is disclosed. A hot wash solvent is continuously sprayed below the doctor blade...
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5302300 |
Method and apparatus for separating water from a condensate mixture in a compressed air system
An apparatus removes water from a liquid mixture which has formed in a compressed gas system. The apparatus includes a gas compressor having an inlet port for receiving low pressure gas to be...
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5294351 |
Method for controlling zebra mussels in power and water plants
A method and apparatus for controlling zebra mussels in the inlet cell of a utility power plant by isolating a batch of water in the cell from the water supply of a lake or river and the equipment...
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5292442 |
Process for disposing of sewage sludge
A process for disposing of sanitary sewage sludge by producing a pumpable slurry of sewage sludge with or without solid carbonaceous fuel and burning said slurry as fuel in a partial oxidation gas...
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5288413 |
Treatment of a waste sludge to produce a non-sticking fuel
A waste sludge that contains water, oil and solids is subjected to filtration under vacuum or an applied inert gas pressure, preferably no more than 50 psia while utilizing a filter aid, to retain...
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5288408 |
Method of gelatin recovery and purification from encapsulation processes
The subject invention relates generally to a novel method of recycling gelatin-based encapsulation waste material and, more specifically, to a process for the recovery and purification of gelatin...
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5284589 |
Process for the treatment of effluent
The process for the working-up of effluents and disposal of the loads, present therein, by a combination of concentration by membrane filtration, evaporation and gas phase oxidation, is...
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5282979 |
Desalination system having rechargeable syphon conduit
A desalination system includes a transfer conduit between a pool of salt water and a pool of desalinated water. The conduit is initially filled with water and is then elevated so that a portion of...
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5269906 |
Process for the recovery of oil from waste oil sludges
Commercially valuable oil is recovered from refinery-produced, Resource Conservation and Recovery Act classified, hazardous waste oil sludges by a series of volatilizing and condensing steps (which...
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5269948 |
Decontamination of polystyrene
A method of decontaminating waste contaminated polystyrene involves dissolving the contaminated product in liquid styrene monomer at about room temperature and recovering the contaminant-free...
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5269947 |
Thermal depolymerizing reforming process and apparatus
This disclosure relates to a processor comprising means for mixing a process material with a process liquid (such as water) and forming an emulsion or slurry. Means is provided for pressuring and...
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5266211 |
Process for precipitating polymers
This invention concerns a method for precipitating polymers from a liquid using at least one precipitant fluid, including a feed line, a nozzle plate having at least one outlet orifice for a...
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5264009 |
Processing of sewage sludge for use as a fuel
A process for disposing of sanitary sewage sludge by producing a pumpable slurry of sewage sludge with or without solid carbonaceous fuel and burning said slurry as fuel in a partial oxidation gas...
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5259977 |
Method and apparatus for the treatment of sewage sludge and the like
A process for the production of a durable granular or pelletized sludge product is disclosed whereby a minimal amount of high calcium oxide material is utilized for pathogenic stabilization, the...
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5256313 |
System and process for treatment of cyanide-containing waste
A system and process are provided for treatment of cyanide-containing waste to form a substantially detoxified reaction product. The system comprises a reaction vessel, a heat exchange conduit...
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5254265 |
Garbage disposal system
A garbage disposal system for household garbage which includes a crushing and shearing unit for the process to separate the liquid from the solid and to shear the solid into refuse strips, a screw...
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5250192 |
Sludge dewatering by freezing
A method and apparatus for dewatering sludges and/or concentrating suspen and dissolved impurities in solutions by simultaneously freezing and rotating same. Rotation of the sludge is accomplished...
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5246599 |
Method and arrangement for treatment of sewage sludge
In a treatment or processing or sewage sludge in the sense of recycling, where the sewage sludge is to begin with dried (T), subsequently converted (K) under anaerobic conditions at approximately...
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5244575 |
Process for recovering organic solvents and contaminants from soap liquors
A method for recovering contaminants and the organic solvents used to extract the contaminants from an aqueous solution containing soap liquors comprises extracting the aqueous solution with an...
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5242605 |
Method and apparatus for removing water from lubricants, coolants and the like
A method of removing water from lubricants, coolants and the like consisting of the following described steps. Firstly, pass lubricants through a heater at a predetermined flow rate to decrease its...
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5240617 |
Phase-separation equipment and method for thermally separating an emulsion, in particular a water-oil emulsion
Phase separation equipment for thermally separating an emulsion, in particular, a water-oil emulsion, includes a container for receiving the emulsion, a heater for heating the emulsion in the...
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5240674 |
Two method for controlling macrofouling by mollusks by using heat
A method and apparatus are provided for preventing the settlement of or for removing attached mollusks and/or their larvae on the surface of a structure exposed to the aquatic habitat of the...
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5233021 |
Recycling of polymeric materials from carpets and other multi-component structures by means of supercritical fluid extraction
A method of extracting pure components from a multi-component structure by dissolving each component at an appropriate temperature and pressure in a supercritical fluid and then varying the...
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5232604 |
Process for the oxidation of materials in water at supercritical temperatures utilizing reaction rate enhancers
Disclosed is a method of substantially completely oxidizing material in an aqueous phase at supercritical temperatures and sub- or supercritical pressures by initiating the oxidation in the...
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5232606 |
Process for recycling of supported or contaminated PVC
A method is provided for recovering PVC from a material including PVC and one or more non-PVC components, in which the material is mixed with a sufficient amount of a plasticizer at an effective...
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5229010 |
Rotating microwave contaminated materials treating apparatus and method of using thereof
An apparatus and method for the efficient removal of hazardous and nonhazardous volatile and semi-volatile organic materials from contaminated materials includes an evaporation/vacuum heating...
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5225086 |
Process for the treatment of wash water from the gas washing system of an iron ore reduction plant
The invention relates to a process for the treatment of wash water from the gas washing system of an iron ore reduction plant, the wash water being brought into direct contact with dust-laden gas...
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5223148 |
Process for increasing the bitumen content of oil sands froth
A process and an apparatus are described for separation of water and solids from oil sands froth in which heated froth is fed into a gravity settling vessel at a level below a bitumen-water...
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5223152 |
Recovered oil dewatering process and apparatus with water vaporizing in blowdown drum
A process and apparatus for dewatering a recovered oil stream prior to the recovered oil stream being fed to a fractionator for reprocessing into product s rea s uses a blowdown drum controlled...
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5215671 |
Purification method of 2-chloropropionic acid
The present invention is directed to a method for recovering 2-chloropropionic acid so that this compound can be separated in a high-purity form. According to the method, crude 2-chloropropionic...
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5211819 |
Micro-effluent process for rinsing water in industrial processing
This invention relates to a micro-effluent process for rinsing water and equipment for the same in industrial processing, especially in electroplating processing. The process of the present...
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5211856 |
Method of oil/water separation and device for purification of oil
This invention provides a new low vacuum oil/water mixture liquid separation method and an improved oil purification device for oil/water separation. Fully diffused purified gas is introduced into...
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5209855 |
Continuous acid washing of polymer resin with controlled metering of acid
A batch type process for purification of a polymer resin, in which a predetermined volume of acid is rapidly emptied and stirred into a fixed volume of polymer slurry for chemically treating...
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5209856 |
Process and device for continuous crystallization of a massecuite
A process and device for the crystallization of sugar syrup is described. Sugar syrup is cooked to provide a massecuite. Thereafter, the massecuite is subjected to at least one stage of continuous...
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5207928 |
Method for desalination and fresh water recovery
A method of saltwater desalination and fresh water recovery comprises spraying a mixture of saltwater droplets substantially in the range of 7 to 30 microns in diameter and compressed air with a...
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5207929 |
Method for removing hydrocarbons from polymer slurries
Methods and apparatus for the removal of hydrocarbons from polymer slurries are disclosed. The invention includes feeding a hydrocarbon-containing polymer slurry to a flash tank to flash a portion...
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5202034 |
Apparatus and method for removing water from aqueous sludges
An apparatus for dewatering aqueous sludge is disclosed. A porous drum is partially immersed in a sludge pond. A porous belt is connected between the drum and a roller which moves the belt. As the...
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5202031 |
Waste water treatment system
Improved techniques are provided for separating mixtures of materials having different densities. The apparatus of the present invention is well suited for separating oil from water, and includes a...
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5200085 |
Process and apparatus for extraction of solid matter containing fat and/or protein from sludge
According to the process the sludge is homogenized and heated to 30°-60° C. temperature. The heated sludge is circulated under 2-4 bar overpressure, and its temperature is raised to about...
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5190672 |
Method for thermal disposal of sewage sludge
A method of thermal disposal of sewage sludge. The sludge is dried and incinerated. The flue gases from the incineration are washed. The flue gas dust resulting from the incineration and the sludge...
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5188740 |
Process for producing pumpable fuel slurry of sewage sludge and low grade solid carbonaceous fuel
A process for disposing of sanitary sewage sludge by producing a pumpable slurry of sewage sludge and low grade solid carbonaceous fuel and burning said slurry as fuel in a partial oxidation gas...
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5188739 |
Disposal of sewage sludge
A process for disposing of sanitary sewage sludge by producing a pumpable slurry of sewage sludge and solid carbonaceous fuel e.g. coal, petroleum coke, rubber. The slurry is burned as a fuel in a...
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5188742 |
Apparatus and method for removing contaminants from water
The apparatus has a vaporization vessel and a combustion chamber including a burner. Contaminated water is supplied to the vessel, and vaporized. Simultaneously, any oil-based contaminants in the...
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5188741 |
Treatment of sewage sludge
A process for treating sanitary sewage sludge to achieve increased solids, decreased viscosity, and a reduction of pathogens. The aqueous slurry of sewage sludge having a solids content in the...
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5178776 |
Method of converting biological waste for agricultural use
The treatment of biological masses to produce a solid material which can be used as an agricultural fertilizer and/or conditioner includes the subjecting of the biological mass, which is in the...
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