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3747766 CONTINUOUS FILTER SYSTEM FOR WASTE USING ROLL FILTER PAPER OR OTHER SELF-CLEANING FILTER  
Household and other waste consisting of liquid and solids conveyed by water is discharged into the system through the inlet pipe. Filter paper from a roll is fed around the inlet pipe and formed...
3735870 ACTIVATED SLUDGE PLANT  
A sewage treatment apparatus adapted to handle sewage loading, the apparatus designed for aerobic decomposition of fresh sewage and comprising in series: a digester tank, a plurality of aeration...
3734854 LIQUID PROCESSING SYSTEM  
A liquid processing system for the treatment of a liquid byproduct heretofore unfit for reuse or disposal due to the presence therein of impurities, the system providing first a filter for the...
3733268 PROCESS OF TREATING AND PURIFYING SEWAGE,PARTICULARLY OF SEWAGE CONTAMINATED WITH DETERGENTS  
3726404 BATCH OZONATORS FOR DRINKING WATER  
Each ozonating unit comprises a contact tank containing a diffuser, an ozone generator for supplying ozone gas to the diffuser, a storage tank or reservoir removably mounted adjacent the contact...
3715287 ION EXCHANGE DEMINERALIZING SYSTEM  
A preconditioner which is used for treating raw water before utilization in a water treatment or utilization process and which receives the concentrated waste water returning from the process. The...
3684094 LIQUID TREATMENT SYSTEM FOR HIGH pH WATER  
A packing composition effective to reduce the pH of alkaline liquids, used as a pretreatment, in association with a reverse osmosis membrane and support in a liquid treatment system, is made of an...
3679051 IMPROVED METAL AND PLASTIC CHIP WRINGING APPARATUS AND PROCESS  
Cutting and cooling fluids used in machining metal and/or plastic parts are effectively removed from the resulting chips by a process comprising first separating in a centrifugal separator a...
3677710 APPARATUS FOR WASHING BLOOD CELLS  
3674687 STORM SEWAGE TREATMENT  
Street runoff or storm sewage is measured and solids are separated from the liquid first by a grit chamber and screen. Remaining solids are ground by a comminutor, and the fluid is pumped into...
3670477 SLUDGE RETRIEVAL APPARATUS FOR AIR POLLUTION CONTROL SYSTEMS  
Apparatus for removing pollutants from pollutant-laden water discharged from a water type dust collector device, such polluted water being pumped from a collecting tank, where the pollutants are...
3669880 RECIRCULATION DIALYSATE SYSTEM FOR USE WITH AN ARTIFICIAL KIDNEY MACHINE  
A recirculating dialysate system for use with an artificial kidney in which the total volume of dialysate solution is controlled. After leaving the artificial kidney, the urea in the solution is...
3642138 FILTERING TANKS FOR WASTE DISPOSAL SYSTEMS  
A filtering tank for waste disposal systems with extension units positioned over it in telescoping relation extending to ground level and having a cover for access to the tank. The filtering tank...
3633748 PORTABLE WATER-TREATING APPARATUS  
A housing having a water pump mounted therein so as to receive water from a reservoir by gravity flow and supply water to a first container partially filled with activated carbon. A blend of water...
3630365 TRANSPORTABLE LIQUID WASTE TREATMENT PLANT  
Transportable liquid waste treatment apparatus is adapted for movement from place to place and for temporary or permanent connection to a sewage system, or the like, for the treatment of sewage...
3628194 VALVE STRUCTURE FOR CONTROLLING DISCHARGE OF WASTE LIQUID INTO PNEUMATIC SEWAGE DISPOSAL SYSTEM  
Waste liquid is discharged into a pneumatic sewage disposal system through a discharge conduit from the outlet of a place in a kitchen or laundry or a fixture in a bathroom like a bathtub or...
3625883 LIQUID WASTE TREATMENT PROCESS  
An advanced liquid waste treatment process is provided for treating sewage and other liquid waste and having steps including centrifuging the waste through filter mediums to remove solids from the...
3624665 MINIATURE SANITARY DISPOSAL PLANT  
A miniature sanitary disposal plant which includes a toilet combined with an enzyme digester tank, an activated carbon-leaching bed, a separating tank, a chemical-neutralizing tank, a plurality of...
3622509 MECHANISM AND METHOD FOR A CHAR-RECYCLING COUNTERFLOW WATER CLARIFIER  
Solid, combustible waste material, all or part of which may comprise particles removed from polluted water, is divided into two portions, one of which portions is burned in a thermal converter...
3619423 CASCADE DIALYSIS APPARATUS AND METHOD  
A system, such as an artificial kidney, is disclosed which facilitates the removal of undesirable substances found in a fluid material, such as blood. The system utilizes a dialyzer and an...
3586169 OIL-FILTERING UNIT  
A compact filtering unit is provided which includes a reservoir tank divided into three compartments by a first and second spaced baffle plates. The first compartment includes a strainer basket...
3579441 BLOOD PURIFICATION BY DUAL FILTRATION  
3575294 COUNTERFLOW, MOVING BED TYPE, ION EXCHANGE APPARATUS  
In a counterflow moving bed type ion exchange apparatus in which an ion exchange resin is supplied to the upper portion of a column and a liquid being treated is supplied to the bottom of the...
3565252 OIL WATER SEPARATION SYSTEM FOR TANKERS  
In a system for handling tank washings for oil tankers, means for separating oil from water are provided to assure that water passing overboard will not have present therein oil in excess of a...
3550782 WATER STERILIZER APPARATUS  
3527701 METHOD AND APPARATUS FOR TREATING LIQUIDS CONTAMINATED WITH HYDROCARBONS COMPOUNDS  
3510890 DRYCLEANING AND FLUID DECONTAMINATION APPARATUS AND METHOD  
3506126 CLOSED RECIRCULATING HEMODIALYSIS SYSTEM  
3502215 WATER RECLAMATION APPARATUS  
3497067 DISTRIBUTION MEANS  
3496740 WASHING MACHINE WITH WATER-SOFTENING MEANS AND ACID NEUTRALIZING MEANS  
3489245 APPARATUS FOR FLUSHING INTERNAL COMBUSTION ENGINES  
3482694 METHOD AND APPARATUS FOR SEPARATION OF SOLIDS FROM LIOUIDS  
3472764 SEWAGE TREATMENT METHOD AND PLANT  
3469701 INSTALLATION FOR PURIFYING SPENT FUEL OIL  
3462361 METHOD AND APPARATUS FOR TREATING BLOOD  
3454491 APPARATUS AND PROCESS FOR HIGH PURITY DEIONIZED WATER  
3450265 RECIRCULATING WATER TREATMENT AND CONTROL SYSTEM  
3449244 RECOVERY OF STEAM CONDENSATE  
3444079 METHOD AND APPARATUS FOR DEMINERALIZING WATER  
3441956 LIQUID TREATMENT METHOD AND APPARATUS  
3429148 MULTI-STAGE FILTER SYSTEM FOR DRY CLEANING  
3428556 FILTRATION AND DISTILLATION PROCESS  
3426904 SEPARATING APPARATUS FOR DISPERSED MATTER  
3425936 WASTE WATER TREATMENT SYSTEM  
3424675 VAPOR COMPRESSION SOLVENT EXTRACTOR DESALINATION  
3400516 Air filter  
3396102 Sewage treatment process and apparatus  
3372808 Apparatus for removing radioactive materials from water  
3368682 System for regenerating cooking oil