Method for treating waste water
October 6, 2007. Estimated 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.Patent ReferencesShaped bodies of calcium silicate and process for producing same Process for producing tobermorite and ettringite System for forming a reaction product such as calcium silicate Calcium silicate granules forming a microporous structure Shaped composite adsorbent and a process for preparing the same Process for preparing calcium silicate shaped product Method for the formation of calcium silicate and the resulting structure Process for preparing biomass attached to a carrier Process for treating waste water containing phosphorus compounds and/or organic cod substances Patent #: 4707270 InventorsAssigneeApplicationNo. 130875 filed on 10/06/1987US Classes:210/605, Anaerobically, with subsequently aerobically treating liquid210/500.1, Material210/615, Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.)210/621, Recirculating to prior step210/630, And anaerobic treatment210/906, Phosphorus containing423/331Alkaline earth metal containing (Mg, Ca, Sr, or Ba)ExaminersPrimary: Spear, FrankAssistant: Drodge, Joseph W. Attorney, Agent or FirmForeign Patent References
International ClassB01D 015/00Foreign Application Priority Data1986-02-10 JPAbstractA method of treating raw water containing phosphorous and nitrogen compounds and organic matter in which the raw water is passed through an aerobic zone containing a porous material. Anaerobic treatment is carried out in the presence of a hydrogen donor. The porous material is tobermorite and/or xonotlite with a porosity of 50% to 90% and is produced by foaming and hardening a silica-based material, a lime-based material and water, and subjecting the porous material to hydrothermal synthesis. The order of the aerobic and anaerobic treatments may be varied.Other References
Field of SearchMetal containingIncluding collecting or storing gas (e.g., fuel, carbon monoxide, etc.) Treatment by living organism In bed form And rehabilitating or regenerating same And anaerobic treatment And additional treating agent other than mere mechanical manipulation (e.g., chemical, sorption, etc.) From aqueous material Including step of manufacturing inorganic treating agent Nitrogenous Phosphorus containing Organic Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.) Particulate media Recirculating to prior step Material REMOVAL OF LIQUID COMPONENT OR CARRIER THROUGH POROUS MOLD SURFACE Sensed condition is operating time and control is operation sequencer Alkaline earth metal containing (Mg, Ca, Sr, or Ba) |
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