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US Patent 6569342 - Process for treating waters, soils, sediments and/or silts
US Patent Issued on May 27, 2003
Estimated Patent Expiration Date:
November 14, 2020Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
November 14, 2020Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA method is providing for treating waters, such as standing and flowing waters and waste waters, soils, sediments and/or silts. At least one alkaline earth metal peroxide is brought into contact with such waters or the like, especially to effect immobilization of phosphates and heavy metals except manganese and iron therein. | InventorsAssigneeApplicationNo. 716124 filed on 11/14/2000US Classes:210/714, Seeding71/11, Organic material-containing71/12, From sewage or night soil71/42, Alkaline treatment71/901, REFUSE CONDITIONING210/717, In situ210/721, Including oxidation210/723, Utilizing precipitant, flocculant, or coagulant, each with accelerator or with each other or plural precipitants, flocculants, or coagulants210/726, Sequential introduction210/738, Including agitation210/747, Including geographic feature (e.g., drainage ditch, septic, pond)210/759, Utilizing peroxy compound (e.g., hydrogen peroxide, peracid, etc.)210/906, Phosphorus containing210/912, Heavy metal405/128.1, SOIL REMEDIATION405/128.75ChemicalField of Search210/667, Utilizing aluminum, calcium, or iron containing agent210/683, Anions210/688, Heavy metal210/710, Treating the insoluble substance210/721, Including oxidation210/668, By chemically modifying or inhibiting dispersed constituent210/714, Seeding210/747, Including geographic feature (e.g., drainage ditch, septic, pond)210/726, Sequential introduction210/738, Including agitation210/759, Utilizing peroxy compound (e.g., hydrogen peroxide, peracid, etc.)210/752, Plural spaced feedings210/906, Phosphorus containing210/912, Heavy metal210/717, In situ210/723, Utilizing precipitant, flocculant, or coagulant, each with accelerator or with each other or plural precipitants, flocculants, or coagulants71/11, Organic material-containing71/12, From sewage or night soil71/42, Alkaline treatment71/901, REFUSE CONDITIONING405/128.5, Chemical405/128.75ChemicalExaminersPrimary: Hruskoci, Peter A.Attorney, Agent or FirmUS Patent References4917802, Method for treating waste waterIssued on: 04/17/1990 Inventor: Fukaya, et al.5075007, Biological wastewater purification with a downstream precipitation stage Issued on: 12/24/1991 Inventor: Morper, et al.5124044, Phosphate removal from aquaria using immobilized ferric hydroxide Issued on: 06/23/1992 Inventor: Cassidy, et al.5132021, In situ treatment of waste water to prevent ground water contamination Issued on: 07/21/1992 Inventor: Alexander5207925, Process for the detoxification of cyanide-containing aqueous solutions Issued on: 05/04/1993 Inventor: Steiner, et al.5208006, Large-pored molecular sieves containing at least one octahedral site comprising titanium and at least silicon as a tetrahedral site Issued on: 05/04/1993 Inventor: Kuznicki, et al.5264018, Use of metallic peroxides in biormediation Issued on: 11/23/1993 Inventor: Koenigsberg, et al.5741427, Soil and/or groundwater remediation process Issued on: 04/21/1998 Inventor: Watts, et al.5869415, Process for activating layered silicates Issued on: 02/09/1999 Inventor: Ortiz, et al.6274051, Method for neutralizing organophosphorus agricultural chemicals Issued on: 08/14/2001 Inventor: Cronce6319328, Soil and/or groundwater remediation process Issued on: 11/20/2001 Inventor: Greenberg, et al.6350383, Remediation material and remediation process for sediments Issued on: 02/26/2002 Inventor: Douglas6419836Composition for treatment of water and reconditioning of soils Issued on: 07/16/2002 Inventor: Willuweit Foreign Patent References
International ClassC02F 001/52Foreign Application Priority Data1998-05-14 DE |
