CONTAMINANT-REACTIVE GEOCOMPOSITE MAT AND METHOD OF MANUFACTURE AND USE

    公开(公告)号:CA2685442C

    公开(公告)日:2014-04-08

    申请号:CA2685442

    申请日:2008-04-28

    Abstract: Reactive geocomposite mats, and their method of manufacture, for treating contaminants in sediment, soil or water that allow the passage of essentially non-contaminated water therethrough. The geocomposite mat includes a pre-formed woven or non-woven geotextile, that is needlepunched to an outer geotextile sheet layer to provide a high loft, structurally secured, pre-formed geotextile having a thickness of about 6 mm to about 200 mm, and having, a porosity sufficient to receive a powdered or granular contaminant-reactive material, contaminant-sorptive material, or a contaminant-neutralizing material (hereinafter collectively referred to as "contaminant-reactant material" or "contaminant-reactive material") throughout its thickness, or in any portion of the thickness across its entire major surface(s). The powdered or granular contaminant-reactive material is disposed within the pores of the previously formed, high loft geotextile mat to surround the fibers, e.g., by vacuum or vibrating the high loft mat while in contact with the contaminant-reactive material to allow the powdered or granular contaminant-reactive material to flow by gravity into the pores of the previously formed, needlepunched geotextile. A liquid-permeable outer geotextile sheet then is secured to the filled geotextile, preferably by heating upwardly extending fibers of the pre-formed geotextile mat to prevent the powdered or granular material from escaping from the geotextile during transportation and installation.

    Hydraulic barrier
    33.
    发明专利

    公开(公告)号:AU2003236447B2

    公开(公告)日:2010-02-04

    申请号:AU2003236447

    申请日:2003-08-22

    Abstract: Water-absorbent sheet material is manufactured by contacting a liquid-sorbent polymerization initiating substrate with polymerization catalyst and/or polymerization initiator, embedding the polymerization initiating sheet material with clay-containing slurry, and heating the embedded sheet material to polymerize the monomer and vaporize, to form a water sorbent polymer and to interlock the polymer and clay in the sheet material. Manufacture of water-absorbent sheet material comprises contacting a liquid-sorbent polymerization initiating substrate with a polymerization catalyst and/or a polymerization initiator to form a polymerization-initiating sheet material for a subsequently embedded monomer; embedding the polymerization initiating sheet material with a clay-containing slurry comprising water, clay, and polymerizable monomer to form a water-sorbent polymer; and heating the embedded sheet material to polymerize the monomer and vaporize at least a portion of the slurry water to form a water sorbent polymer and to interlock the polymer and clay in the sheet material. The slurry comprises less than 50% water. The weight ratio of monomer to clay is 1:19, throughout a portion of the thickness of the polymerization-initiating sheet material for intimate contact with the polymerization catalyst or polymerization initiator to initiate polymerization of the monomer.

    METHOD AND APPARATUS FOR REMOVING OIL FROM WATER INCLUDING MONITORING OF ADSORBENT SATURATION

    公开(公告)号:CA2422074C

    公开(公告)日:2007-08-07

    申请号:CA2422074

    申请日:2001-11-05

    Abstract: Apparatus in fluid communication with a water leg portion of a hydrocarbon- contaminated water, e.g., a water leg portion of an offshore drilling or production platform sump tank for conveying water, separated from oil, into contact with organophilic media canisters such that the hydrocarbons and oth er organic materials commingled with the sump tank water will be adsorbed onto the organophilic media and detected by the embedded probe in selected canisters. The canisters are provided in a plurality of stacks and are in fluid communication with a header disposed at the bottom of the vessel housi ng the various stacks of canisters. Solids that do not pass through the caniste rs are accumulated at the bottom of the vessel and easily drained through a dra in port. The water will pass through the media and will be conveyed back to the ocean water without contamination . At some point in time, the organophilic media will become "spent" and at a certain "spent level", the saturated condition of the organomedia will be electronically detected by the embedded probe and alarm/control panel. The alarm indicates that the "spent" organophilic media should be replaced with fresh media or the spent media regenerated.

    36.
    发明专利
    未知

    公开(公告)号:AT240908T

    公开(公告)日:2003-06-15

    申请号:AT00938190

    申请日:2000-06-07

    Abstract: Apparatus in fluid communication with a water leg portion of a hydrocarbon-contaminated water, e.g., a water leg portion of an offshore drilling or production platform sump tank for conveying water, separated from oil, into contact with organophilic clay cannisters such that the hydrocarbons and other organic materials commingled with the sump tank water will be adsorbed onto the organophilic clay and detected by the embedded probe in selected cannisters. The water will pass through the clay and will be conveyed back to the ocean water without contamination. At some point in time, the organophilic clay will become "spent" and at a certain "spent level", the saturated condition of the organoclay will be electronically detected by the embedded probe and alarm/control panel. The alarm indicates that the "spent" organophilic clay should be replaced with fresh clay or the spent clay regenerated.

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