Method to prevent clogging of geotextiles and geonets

Claim 2

A process for preventing biological fouling and or clogging of a geotextile used in a landfill leachate collection system comprising placing a geotextile in a landfill distributing chunks of biocide-containing material on the geotextile so as to exert an antimicrobial effect on the surface of geotextile and prevent clogging of the geotextile by microorganisms, said geotextile having pores of a size adapted to permit liquid leachate to drain through but to prevent small particle fines from passing through.

Claim 3

Process of claim 1 wherein the chunks of biocide-containing material are in solid form adapted to release biocide over a period of at least 5 years.

Claim 4

Process of claim 1 wherein said biocide is in the form of a clathrate compound.

Claim 5

Process of claim 1 wherein said biocide is encapsulated.

Claim 6

Process of claim 1 wherein said biocide is present in a resin.

Claim 7

Process of claim 1 wherein said biocide is in a cyclodextrin.

Claim 8

In a landfill having a leachate collection system comprising a geotextile, the improvement comprising having on the geotextile chunks of biocide-containing material so as to exert an antimicrobial effect on the surface of the geotextile and prevent clogging of the geotextile by microorganisms, said geotextile having pores of a size adapted to permit liquid leachate to drain through but prevent small particle fines from passing through.

Claim 9

In a landfill having a leachate collection system comprising a geotextile, the improvement comprising having on the geotextile chunks of biocide-containing material so as to exert an antimicrobial effect on the surface of the geotextile and prevent clogging of the geotextile by microorganisms, said geotextile having pores of a size adapted to permit liquid leachate to drain through but prevent small particle fines from passing through.

Claim 10

Landfill of claim 7 wherein the material is in solid form adapted to release biocide over a period of at least 5 years.

Claim 11

Landfill of claim 7 wherein said biocide is in the form of a clathrate compound.

Claim 12

Landfill of claim 7 wherein said biocide is encapsulated.

Claim 13

Landfill of claim 7 wherein said biocide is present in a resin.

Claim 14

Landfill of claim 7 wherein said biocide is in a cyclodextrin.

Claim 15

Landfill of claim 7 wherein said chunks are in pellet or granular form having a diameter greater that the pore size of the geotextile.

Claim 16

Landfill of claim 7 wherein the biocide is selected from the group consisting of isothiazolones; 2-bis(tri-n-butyl tin) oxide; 10, 10'-oxybisphenoxarsine; N-(2-methylnaphthyl) maleimide; copper naphthenate and zinc naphthenate;. copper-8-hydroxy quinolinolate; metal dimethyl dithio carbamates; Phenylmercuric acetate; phenol; o-phenyl phenol; penta-chlorophenol; hexahydro-1,3,5-triethyl-s-triazine; beta-bromo-beta-nitrostyrene; 1,2-benzisothiazolin-3-one; glutaraldehyde; alkyl dimethyl benzyl ammonium chloride; tetrachloroisophthalonitrile; 1,2-dibromo-2,4-dicyanobutane; methylene bis-thiocyanate; 2-bromo-2-nitropropane-1,3-diol; 3-iodo-2-propynyl butyl carbamate; 2-(thiocyanomethylthio) benzothiazole; and diiodomethyl-p-tolyl sulfone.