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| Number | Title | Issue Date |
| 5545325 | Combined aerobic & anaerobic treating method & facility for hog wastewater A combined aerobic and anaerobic treating method and facility for treating hog wastewater, in which, wastewater flows through six consecutive steps, namely: 1 raw wastewater tank 2 grit removal chamber 3 natural solid-liquid separation device 4 equalizati... | 08/13/1996 |
| 5545326 | Method and apparatus for the treatment of concentrated wastewater A pressurized process for the treatment of high-solids wastewater having relatively high BOD and phosphorus concentration includes anaerobic and aerobic treatment. The treated wastewater effluent is discharged in an environmentally safe manner such that t... | 08/13/1996 |
| 5545330 | Water treatment system A water treatment system and process separates contaminants from water by flotation, by forming a removable floating scum of impurities utilizing a bubbling process, by filtering out suspended solids, by stripping dissolved impurities from the water with ... | 08/13/1996 |
| 5540836 | Wastewater treatment system and method A wastewater treatment system and method for substantially reducing or eliminating total suspended solids (TSS), biological organic discharge or biochemical oxygen demand (BOD), and fats, oils and greases (FOG) contaminants. The system includes at least o... | 07/30/1996 |
| 5540844 | Dewatering system Apparatus and method is described for dewatering sludge obtained from a flotation tank, which efficiently handles the sludge and avoids the need for adding polymers to reflock the sludge. The sludge dewatering portion includes a conveyor (40, FIG. 1) whic... | 07/30/1996 |
| 5534141 | Wastewater treatment system with in-pond clarifier A wastewater treatment system for deployment in a body of water having a floor and a water surface includes an in-pond clarifier extending across the body of water. The in-pond clarifier defines a clarifying chamber and includes an upper portion and a low... | 07/09/1996 |
| 5525223 | Apparatus for introducing an agent into a liquid or gas at a controlled rate The present invention provides an agent dispenser, a method and an apparatus for introducing an agent into a liquid or gas where the agent is miscible with such liquid or gas. The agent dispenser comprises a hollow casing constructed of a material having ... | 06/11/1996 |
| 5518618 | System and process for purifying waste water which contains nitrogenous compounds A system for purifying nitrogenous waste water by biological nitrification and denitrification, comprises at least two essentially separated reactor chambers, a liquid supply (4) and a liquid discharge (5). The first, aerated reactor chamber (1) is provid... | 05/21/1996 |
| 5516434 | Single cell gas flotation separator with filter media A simplified single cell apparatus and method for removal of suspended impurities in liquids using gas flotation and filtration is provided wherein the method and apparatus are preferably directed to induced gas flotation separation of suspended impuritie... | 05/14/1996 |
| 5514282 | Food processing wastewater treatment and recovery process A system and related method for the treatment of dairy and other food processing plant wastewaters provides recoverable by-products from two separate stages and a final water effluent clean enough for direct discharge or process reuse. The system provides... | 05/07/1996 |
| 5512178 | Water treatment method and apparatus therefor In a water treatment method and an apparatus therefor, a high purification step comprising a precision filter and an ion-exchange resin is added to a treatment system having ozone supply units, filtering units and an ultraviolet-ray irradiating unit. Trea... | 04/30/1996 |
| 5507946 | Apparatus for wastewater treatment A process for treating wastewater containing insoluble solid waste material and soluble solid waste material including the following series of steps: (1) controlling the oxygen content of the wastewater to a level at which growth of anaerobic bacteria is ... | 04/16/1996 |
| 5505840 | Chlorinator-filter system for sewage treatment plants An apparatus and method of using the apparatus in the final stages of purification of sewage water in which the effluent is placed under pressure by a pump and forced through a filter. Part of the effluent is sampled and chlorinated by a chlorine gas inje... | 04/09/1996 |
| 5505847 | Water circulation system for a multiple mineral bath The present invention is a bath which circulates and recycles a multiple mineral solution. The solution is released from the bathtub, filtered at the hair collector and the filtration device, sterilized at the electrolytic sterilizer, and returned to the ... | 04/09/1996 |
| 5501790 | Aquarium filter A filtration unit for an aquarium tank comprises a biological filter chamber which is cyclically exposed to air and water without the use of conventional syphon means. Alongside the chamber is a U-tube arrangement one branch of which communicates at its u... | 03/26/1996 |
| 5496469 | Apparatus for reducing and separating emulsions and homgeneous components from contaminated water A system for the reduction and separation of highly emulsified and/or immiscible components mixed in a fluid, particularly useful for treating waste water contaminated with oils and oily emulsions, as from depleted oil wells, vehicle washing stations, and... | 03/05/1996 |
| 5492620 | Apparatus for removing contaminants from a waste stream This invention includes a first balance pH tank, a clarifier tank and a final pH balance tank. The first tank periodically receives a certain volume of the waste stream. This tank is equipped with an automatic system for raising the pH so that all the hea... | 02/20/1996 |
| 5492622 | Water clarification apparatus An apparatus and method for clarifying a contaminated fluid comprising a separator vessel having therein a pair of cyclonic flow chambers; preliminary spiral separators introduce the contaminated fluid to be separated into the cyclonic flow chambers by ta... | 02/20/1996 |
| 5489380 | Apparatus for the biological purification of sewage A process for the biological purification of sewage is specified, with which sewage (AW), containing dissolved pollutants, and air (LT) are fed together to a reactor (1) via at least two mutually separate nozzles (3,4). To achieve a high substance exchang... | 02/06/1996 |
| 5484534 | Energy conserving method of water treatment An energy conserving method and apparatus for using induced gas flotation to separate finely dispersed oil and solids from water and doing so in such a manner as to minimize the power consumption, reduce the amount of water carried with the oil and solids... | 01/16/1996 |
| 5480537 | Apparatus for waste water treatment using calcium carbonate mineral and microorganisms in combination An apparatus for waste water treatment, wherein fluorine contained in waste water is treated into a fluoride through a chemical reaction and sludge containing the fluoride is thickened and dehydrated into a sludge cake, has first and second tanks each pac... | 01/02/1996 |
| 5470460 | Apparatus for the purification of cyanide-containing waste water A two-stage apparatus for the purification of cyanide-containing waste water allows relatively clean water to be obtained from waste water containing high concentrations of cyanide and solids in suspension. The apparatus in its first stage includes a bior... | 11/28/1995 |
| 5470461 | Apparatus for producing pure water An apparatus for producing pure water is provided which includes means for ionizing non-ionic silica which is contained in water comprising a vessel for allowing the water to pass therethrough and stay therein for predetermined lengths of time; means for ... | 11/28/1995 |
| 5468373 | Multiple-effect water treatment apparatus A water treatment apparatus includes a primary column having an iodine disinfection layer and an activated carbon layer juxtapositionally provided in the primary column for killing bacteria and for absorbing odors in a feed water, and a secondary column a... | 11/21/1995 |
| 5466367 | Industrial waste water treatment A waste water treatment system is illustrated which can be configured to be portable and which minimizes the addition of solids to be disposed of through the use of ozone for contaminant reduction to basic elements after the pH value of the waste water to... | 11/14/1995 |
| 5460723 | Surface water processing installation with safety barrier A plant for the treatment of surface water comprises a safety barrier mounted at the exit from the treatment plant and constituted by a physical filter providing, at the exit from the filter, a predetermined minimum quality irrespectively of the quality o... | 10/24/1995 |
| 5460715 | Apparatus for filtering plasma In a process for filtering plasma by separating blood into blood cells and plasma by a primary filter and filtering the separated plasma by a secondary filter to remove macromolecules from the plasma as harmful components, the loss of plasma to be discard... | 10/24/1995 |
| 5454957 | Closed loop system and method of processing cuttings A closed loop system for processing the effluent of drilling mud, cuttings, diesel, water and ultrafines includes a first mechanism for separating the cuttings from the mud, ultrafines and diesel utilizing washing fluid and shaking mechanisms. A second sy... | 10/03/1995 |
| 5453203 | Process and apparatus for purifying low polluted water Disclosed is a process and apparatus for purifying a low polluted water containing concurrently or selectively inadequate matters including heavy metals such as iron contents and manganese, and fine suspended matters, which comprises adding a reactant pri... | 09/26/1995 |
| 5453187 | Food, oil and grease accumulation apparatus and method An improved food, oil and grease accumulating apparatus and method of use is disclosed. The improved apparatus includes a pump station to discharge contaminated effluent at a higher flow rate at periodic intervals into a first food separation station for ... | 09/26/1995 |
| 5441640 | Mobile waste treatment apparatus A sequencing batch waste treatment facility with pretreatment mixing and equalization by mixing with selectively bred bacteria to achieve a selected waste to bacteria ratio, wherein waste is treated and reduced to acceptable biological oxygen demand level... | 08/15/1995 |
| 5439584 | System for reducing consumption of fresh water and energy costs used in a photofinishing operation Apparatus combination and system for reducing use of fresh water in a photoprocessing operation by recirculation of the wash water to the photoprocessing operation via a silver recovery system. Wash water is periodically discharged to waste and a like amo... | 08/08/1995 |
| 5431827 | Device and apparatus for recovery of dry cleaning fluid, and purification of water from dry cleaning water A discharge purification system for dry cleaning facilities is disclosed. The system comprises a series of concentric tanks providing settling and filtration treatment for water containing dry cleaning solvents. The device also provides for recycling solv... | 07/11/1995 |
| 5427693 | Modular ozone water treatment apparatus and associated method An apparatus includes a frame carrying a process tank, ozone generating tubes, a venturi, and an infusion chamber for treating water with ozone. A pump circulates water from the process tank and through the venturi to the infusion chamber. The infusion ch... | 06/27/1995 |
| 5422019 | Method for removing contaminants from industrial cleaning systems Water-based industrial cleaning solutions are stripped of mixed oil and high density particulate (dirt) contamination by a full or partial flow system through, first, a centrifugal separator to produce two effluent flow streams respective to low and high ... | 06/06/1995 |
| 5417852 | Apparatus for removing contaminants from waste fluids The present invention provides a method for removing contaminants from a waste fluid stream. The method includes contacting a waste fluid stream with a promoter of hydroxyl radicals to entrain the promoter of hydroxyl radicals in the waste fluid stream, p... | 05/23/1995 |
| 5415770 | Apparatus for treating fluids A fluid treating apparatus and method for treating fluid to remove undesirable constituents contained therein are disclosed. The apparatus and method include employing a bed of metal particulate matter. The metal particulate matter is preferably chosen fr... | 05/16/1995 |
| 5413706 | Wastewater treatment apparatus with an outer filtration unit and an inner settling unit A wastewater treatment system includes inner and outer relatively telescopic units, the outer telescopic unit including an outer container having a bottom wall and a peripheral wall collectively defining a generally upwardly opening chamber, a filter exte... | 05/09/1995 |
| 5407566 | Apparatus for disposing of waste water Waste water is disposed in a flocculation mixing tank 1, an anaerobic tank 2 and an aerobic tank 3 connected in series. First, a dephosphorization flocculating agent and, if necessary, a polymeric flocculating agent are added to waste water in order to pr... | 04/18/1995 |
| 5407572 | Systematic tertiary effluent polishing A tertiary treatment unit is provided that has a first filtration unit operatively connected to an influent for filtering solids therefrom to form an effluent, a second filtration unit operatively connected to the first filtration unit to receive the effl... | 04/18/1995 |
