CONTAMINANT-REACTIVE GEOCOMPOSITE MAT AND METHOD OF MANUFACTURE AND USE

    公开(公告)号:CA2685442A1

    公开(公告)日:2008-11-06

    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 essential ly non-contaminated water therethrough. The geocomposite mat includes a pre- formed woven or non-woven geotextile, that is needlepunched to an outer geot extile 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 p orosity sufficient to receive a powdered or granular contaminant-reactive ma terial, contaminant-sorptive material, or a contaminant-neutralizing materia l (hereinafter collectively referred to as "contaminant-reactant material" o r "contaminant-reactive material") throughout its thickness, or in any porti on of the thickness across its entire major surface(s). The powdered or gran ular contaminant-reactive material is disposed within the pores of the previ ously formed, high loft geotextile mat to surround the fibers, e.g., by vacu um or vibrating the high loft mat while in contact with the contaminant-reac tive material to allow the powdered or granular contaminant-reactive materia l 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 p re-formed geotextile mat to prevent the powdered or granular material from e scaping from the geotextile during transportation and installation.

    Contaminant-reactive geocomposite mat and method of manufacture and use

    公开(公告)号:AU2004297142A1

    公开(公告)日:2005-06-23

    申请号:AU2004297142

    申请日:2004-07-28

    Abstract: Reactive geocomposite mats, and their method of manufacture, for treating contaminants in 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, 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 geotextile and vibrational forces. Liquid-permeable cover sheets are adhered to the upper and lower major surfaces of the filled geotextile to prevent the powdered or granular material from escaping from the geotextile during transportation and installation.

    METHOD OF MANUFACTURE OF WATER ABSORBING LAMINAR MATERIAL

    公开(公告)号:PL362420A1

    公开(公告)日:2004-04-05

    申请号:PL36242003

    申请日:2003-09-25

    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 HYDROCARBONS FROM WATER

    公开(公告)号:CA2418068A1

    公开(公告)日:2004-02-26

    申请号:CA2418068

    申请日:2003-01-30

    Abstract: An improved production water treatment system and method are disclosed. The treatment apparatus includes a vertically oriented vessel wit h tangentially disposed injection nozzles including one or more injection nozzles for the introduction of production water and one or more injection nozzles for the introduction of recycled water from the vessel and a sparge gas. The tangential orientation of the injection nozzles creates a cyclonic flow within the vess el for improved sparge gas bubble/hydrocarbon contact. A hydrocarbon-rich layer migrates to the top surface of the liquid in the vessel where it is removed about a center axis of the vessel. The resulting hydrocarbon-lean production water has a sufficient ly low hydrocarbon content that it is eligible for more intensive processing, such as with organophillic clay cartridges.

    REMOVING OIL FROM WATER, MONITORING OF ADSORBENT SATURATION

    公开(公告)号:CA2422074A1

    公开(公告)日:2002-05-10

    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.

    Superabsorbent polymer containing odor controlling compounds

    公开(公告)号:AU4180800A

    公开(公告)日:2000-11-17

    申请号:AU4180800

    申请日:2000-03-29

    Abstract: Odor-controlling superabsorbent polymer having an odor-controlling compound homogeneously distributed throughout an SAP article. Manufacturing an odor-controlling superabsorbent polymer comprises: (a) forming a mixture comprising water, a vinyl monomer, and an odor-controlling compound selected from cyclodextrin compound, an amphoteric surfactant and/or a water-insoluble-phosphate; (b) polymerizing the mixture to form a hydrogel; (c) optionally, admixing the polymeric hydrogel formed in step (b), with a second odor-controlling compound selected from cyclodextrin compound, triclosan, an amphoteric surfactant and/or a water-insoluble phosphate; and (d) optionally, neutralizing the unneutralized hydrogel. Independent claims are also included for: (1) an odor-controlling superabsorbent polymer particle; (2) articles e.g. nappies and catamenial devices comprising the superabsorbent polymer in (1); (3) manufacturing a superabsorbent polymer comprising: (i) forming a mixture comprising water and a vinyl monomer; (ii) polymerizing the mixture to form a hydrogel; (iii) admixing the hydrogel formed in step (ii) with a odor-controlling compound selected from cyclodextrin compound, triclosan and/or amphoteric surfactant; and (iv) optionally neutralizing the hydrogel admixture formed in (iii); and (4) an odor-controlling superabsorbent polymer prepared by the method in (3); (5) an odor-controlling superabsorbent polymer prepared by the claimed method.

Patent Agency Ranking