Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7422692 | Raw influent treatment processes eliminating secondary biological treatment Presently no chemicals are added in the pulp/paper mills wastewater treatment. There is a loop hole with the Biological Oxygen Demand test utilized. Regulators depend on the Biological Oxygen Demand test. All mills are discharging raw untreated wastes high in Chemic... | 09/09/2008 |
| 7374687 | Method of decolorizing stock-raising treatment water A decolorization treatment method in which not only can a liquid that has been obtained by treating raw water that is stock-raising treatment water in a purifier tank be decolorized swiftly with simple equipment, but moreover the treatment water can be purified to a... | 05/20/2008 |
| 7332095 | Wet oxidation An oxidation process is described which involves subjecting a feedstock which contains oxidizable material to temperature, pressure and contact with an oxidant. Excess water and volatile oxidation products, such as carbon dioxide, formic acid and acetic acid, are re... | 02/19/2008 |
| 7270753 | Surfactant-like polymer gel and a method for separating material using same The present invention relates to a polymer gel having a surfactant-like micelle structure obtained by polymerization or condensation polymerization of an ionic surfactant and an organic or inorganic compound having polymerizable moiety, which is capable of adsorbing... | 09/18/2007 |
| 7201847 | Wastewater treatment method utilizing white rot and brown rot fungi A method of treating wastewater sources such as sewer systems or those from pulp and paper mills which contain biomass waste involves adding white rot fungi in the presence of glucose. While glucose may be directly added to the wastewater source, it has been found t... | 04/10/2007 |
| 7179389 | Method of using a composition for treatment in a waste treatment or sewage system The use of a composition effective in treatments for a waste treatment or sewage system is provided. The process of preparing such composition includes contacting hydrogen peroxide, glycolic acid, and water. The process can additionally include contacting with one o... | 02/20/2007 |
| 6896806 | Biological process for color reduction of pulp and paper effluent The present invention relates to a bacterium strain of accession no. MTCC 5099, a process for the preparation of innoculum of the said strain, and a process for the reduction of color from pulp mill effluent using the above said innoculum, which comprises steps of i... | 05/24/2005 |
| 6833076 | Water treatment A method for the treatment of waste water by the generation of radicals in the waste water comprises applying to the waste water at least one substance which is capable of providing radicals in the waste water. The substance decomposes by a unimolecular mechanism or... | 12/21/2004 |
| 6805802 | De-watering process Process muds are de-watered by the addition of high clay alumina. The clay is mixed with plant sludges or muds so as to cause flocculation of the solid particles, and separating the water from the solid materials, as by filtration. Various polymers and/or alum proce... | 10/19/2004 |
| 6627086 | Methods of producing polyarylamines and using them for detackifying paint and removing color from aqueous systems Aqueous suspensions of paints in waste waters can be treated to detackify the paint and facilitate its removal by contacting the paint suspension at a pH of from about 5 to about 14 with a polyarylamine that is produced by reacting an aldehyde with an ary... | 09/30/2003 |
| 6623648 | Oxidation catalyst, method for preparing the same, method for recycling the same and method for treating wastewater using the same Disclosed are an oxidation catalyst suitable for use in treatment of nonbiodegradable wastewater, a method for preparing the same, a method for recycling the same and a method for treating wastewater using the same. The oxidation catalyst comprises an act... | 09/23/2003 |
| 6589427 | Process for treatment of mixture of spent wash from distillery and black liquor from pulp and paper industry This invention relates to a process for treating an effluent comprising a mixture of spent wash and black liquor, said process comprising mixing the effluent with a flocculating agent consisting of a mixture of salts of Group III and transition metals, mi... | 07/08/2003 |
| 6511611 | Compositions for reducing true color in waste liquids Compositions of aluminum chlorohydrate and high molecular weight branched epichlorohydrin amine condensate polymers are applied to waste liquids, such as pulp and paper mill effluents having a lignin content, to reduce true color, The branched epichlorohy... | 01/28/2003 |
| 6491827 | Process for reducing true color in waste liquids Compositions of aluminum chlorohydrate and high molecular weight branched epichlorohydrin amine condensate polymers are applied to waste liquids, such as pulp and paper mill effluents having a lignin content, to reduce true color. The branched epichlorohy... | 12/10/2002 |
| 6432315 | Process for removal of dissolved components from solution A process for removal of dissolved components of a liquid solution containing multiple components is provided. The process relates to the addition of granular cationic starch to the liquid solution, heating the resultant mixture to gelatinize the starch a... | 08/13/2002 |
| 6322701 | Water treatment process A process for the treatment of waste waters containing chemically reducible dissolved organic and inorganic pollutants and suspended mater in particulate or colloidal form. The process comprises of contacting the water with metallic iron or ferrous ions (... | 11/27/2001 |
| 6319412 | Wastewater treatment process This invention relates to wastewater treatment, process and preferred systems for practice of the process for the removal of organic and inorganic ingredients contaminating wastewater, thereby to allow the reuse or sewer discharge of water used in various... | 11/20/2001 |
| 6306308 | Inorganic composition, process of preparation and method of use A coagulant which is the reaction product of a trivalent metal salt (eg., FeCl3), excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effecti... | 10/23/2001 |
| 6299770 | Portable ultraviolet water disinfection device A water disinfection device is provided having a base fora stabilized support. The base forms a support collar having an annular retaining ring held by a retaining arm, and which holds a durable container of a volume not to exceed 2 liters. A disinfection... | 10/09/2001 |
| 6261460 | Method for removing contaminants from water with the addition of oil droplets A method for removing a contaminant from water includes mixing droplets of a substantially non-water soluble oil with water to combine with the contaminant. The oil can include polar or ionic functional groups. A chemical destabilizer is added to the wate... | 07/17/2001 |
| 6258279 | Hydrophilic cationic dispersion polymer for paper mill color removal This invention is directed to a method of removing color bodies from paper mill waste water comprising adding to the water an effective color-removing amount of a hydrophilic cationic dispersion polymer prepared by polymerizing i. a cationic diallyl-N,N-d... | 07/10/2001 |
| 6241896 | Auto dosage determination method and apparatus for coagulant control in the treatment of water A method and apparatus for treating water by the addition of coagulants comprising the steps of measuring the two parameters of the color and turbidity of the untreated water, determining the control parameter on the basis of the measurement results obtai... | 06/05/2001 |
| 6159381 | Waste paper treatment process According to the present invention there is provided a method of treating reject from a plant for de-inking waste paper which reject comprises in an aqueous medium a mixture of suspended solids comprising at least ink particles, inorganic particles and fi... | 12/12/2000 |
| 6129849 | Process for accelerating reaction of ozone with AM catalyst In treatment of water by injection of ozone into the water for removal of harmful matters, odor matters, and color matters therein, either or both of a nonyl phenol and a cresol are added to the water to be treated. The nonyl phenol is added together with... | 10/10/2000 |
| 6083398 | Process for the decoloration and detoxification of aqueous effluents Process for the decoloration and the toxification of highly polluted (CODࣙ1000 mg/l) resistant aqueous effluents by an oxidation treatment of the effluents by hydrogen peroxide, continuously and in a homogeneous phase, at a pH of 2 to 5 in the presence ... | 07/04/2000 |
| 6059978 | Method of removing colorants from wastewater Cationic polymers are added to wastewater containing colorants to form a cationic polymer/colorant complex. Anionic polymers are then added to the wastewater to produce a flocculent precipitate that is separated from the wastewater.... | 05/09/2000 |
| 6019904 | Hydrophilic dispersion polymers of diallyldimethyl ammonium chloride and acrylamide for the clarification of deinking process waters The invention comprises a method for clarifying ink-laden water obtained from the recycling of paper stocks by treating said water with a hydrophilic dispersion polymer. The hydrophilic dispersion polymer of the invention is a copolymer of a diallyl N,N-d... | 02/01/2000 |
| 5961838 | Amphoteric polymer/polyamine combinations for color removal and clarification of paper mill waste water Processes for removing color from a paper mill waste effluent and for removing color from a textile plant waste effluent utilizing an amphoteric copolymer/polyamine combination are described. A preferred amphoteric copolymer is poly(dimethylaminoethylacry... | 10/05/1999 |
| 5932106 | Process for regeneration of ion-exchange resins used for sugar decolorization, using chloride salts in a sucrose solution alkalinized with calcium hydroxide Process for regeneration of ion-exchange resins, used in sugar decolorization, using a sucrose solution with sodium or calcium chloride, or another chloride, namely potassium or a mixture of those chlorides, alkalinised with calcium hydroxide. The regener... | 08/03/1999 |
| 5846430 | Effluent treatment with hydrotalcite Effluents containing residual dyes are contacted with an effective amount of hydrotalcite-like material together with an effective amount of a magnesium salt or a mixture of magnesium salts, the weight ratio (on dry basis) of hydrotalcite-like material to... | 12/08/1998 |
| 5779909 | Method for recovering binder resin from ink ribbon, method for recovering dye from ink ribbon, apparatus for recovering ink according to said method, and method for producing recycled ink Disclosed herein is a method for recovering binder resin from the ink layer of ink ribbon, said method comprising collecting ink ribbon having an ink layer consisting of dye and binder resin, dissolving the ink layer of ink ribbon in a solvent in which dy... | 07/14/1998 |
| 5766485 | Color removal from effluent waters Alum process residues (APR) are used to remove colored contaminants from waste waters. In addition, in accordance with the invention, up to 0.1% by weight of alum and up to 5 ppm of a polyelectrolyte polymer is added to improve color removal, turbidity re... | 06/16/1998 |
| 5750034 | Hydrophilic dispersion polymers for the clarification of deinking process waters The invention comprises a method for clarifying ink-laden water obtained from the recycling of paper stocks by treating said water with a conventional coagulant followed by treatment with a hydrophilic dispersion polymer. The hydrophilic dispersion floccu... | 05/12/1998 |
| 5750035 | Process for dye removal A process for dye removal from effluent is disclosed which includes treating the effluent with a reducing agent, adjusting the pH to a selected value in the range of 2-7, treating the effluent with a particular charge neutralization mixture, adjusting the... | 05/12/1998 |
| 5738795 | Compositions and methods for water clarification Copolymers of low molecular weight polysaccharides and cationic monomers, their method of production and method of using as water treatment agents are disclosed. Preferably the copolymer comprises alginic acid and methyl chloride quaternary salt of dimeth... | 04/14/1998 |
| 5707532 | Methods of coagulating and decolorizing waste streams Compositions comprising polyamine and melamine polymers in certain ratios are provided for coagulating suspended solids in wastewaters such as deinking process waters and raw waters.... | 01/13/1998 |
| 5702607 | On-site automated closed loop petroleum based hydrocarbon fluid filtration and recycling system An on-site automated closed loop petroleum based hydrocarbon fluid filtration and recycling system that continuously recycles a spent petroleum based hydrocarbon fluid and simultaneously continuously dispenses the recycled petroleum based hydrocarbon flui... | 12/30/1997 |
| 5698109 | Purification of aqueous liquor An aqueous suspension of coagulatable material is coagulated by adding polymeric coagulant to the suspension and then separating the resultant coagulated material from the liquor. The coagulatable material may be present in the aqueous suspension as a sus... | 12/16/1997 |
| 5670020 | Foam separation method for reducing AOX, COD, and color bodies of kraft pulp bleach plant effluents The invention described in the specification relates to a process and apparatus for reducing AOX, COD and color bodies from the filtrate streams generated by a kraft pulp bleaching sequence. The method involves vigorously mixing an FD filtrate ... | 09/23/1997 |
| 5639379 | Process for removing color and odor from aqueous effluent contaminated with textile dye A process for removing both color and odor from wastewater effluent that is contaminated from dye complexes, such as azo dye complexes, used for dyeing textiles to be various colors. The process requires treatment of the effluent with alkali metal permang... | 06/17/1997 |
