Global Patent Index - EP 1109749 A4

EP 1109749 A4 20020130 - IN SITU TREATMENT FOR CONTAMINATED SURFACE WATERS AND PRODUCTS THEREFOR

Title (en)

IN SITU TREATMENT FOR CONTAMINATED SURFACE WATERS AND PRODUCTS THEREFOR

Title (de)

IN-SITU-BEHANDLUNG VON KONTAMINIERTEM OBERFLÄCHENWASSER UND DAFÜR VERWENDETE PRODUKTE

Title (fr)

TRAITEMENT $I(IN SITU) D'EAUX DE SURFACE CONTAMINEES ET PRODUITS A CET EFFET

Publication

EP 1109749 A4 20020130 (EN)

Application

EP 99938785 A 19990730

Priority

  • US 9916692 W 19990730
  • US 9501298 P 19980801
  • US 36064399 A 19990726

Abstract (en)

[origin: CA2339220A1] This invention is directed to a method for the prevention of growth of aquat ic algae which method comprises adding a quantity of timed-release tablets of a dry particulate composition into the surface water, wherein said tablets comprises: (a) an inner-core comprising at least one live microorganism stra in in dormant condition; (b) an inner-coating over the inner-core of a water soluble substance selected from the group consisting of polyethylene glycol and hydroxypropyl methylcellulose; (c) an outer-layer over the inner-coating comprising sodium sulfate coated sodium carbonate peroxyhydrate particles an d a colorant that reflects light at the same wavelength used in photosynthesis by the algae, thereby prevents the necessary light from penetrating the surface water, and (d) an outer-coating over the outer-layer of a water soluble substance selected from polyethylene glycol and hydroxypropyl methylcellulose.

IPC 1-7

C02F 3/34; C02F 3/02; C12N 11/04; C12N 11/12

IPC 8 full level

C02F 3/02 (2006.01); C02F 3/34 (2006.01); C12N 11/04 (2006.01); C12N 11/12 (2006.01)

CPC (source: EP)

Y02W 10/10 (2015.05)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

CA 2339220 A1 20000217; EP 1109749 A1 20010627; EP 1109749 A4 20020130

DOCDB simple family (application)

CA 2339220 A 19990730; EP 99938785 A 19990730