US 12,329,151 B2
Ion enhancement
Joseph A. King, Wayzata, MN (US); John Hill, Plymouth, MN (US); and Nicole A. Weulander, Savage, MN (US)
Assigned to King Technology, Inc., Minnetonka, MN (US)
Filed by King Technology, Inc., Minnetonka, MN (US)
Filed on Dec. 7, 2020, as Appl. No. 17/114,172.
Application 17/114,172 is a continuation of application No. 13/986,763, filed on Jun. 4, 2013, abandoned.
Application 13/986,763 is a continuation of application No. 12/386,109, filed on Apr. 14, 2009, abandoned.
Application 13/986,763 is a continuation of application No. 12/001,351, filed on Dec. 11, 2007, abandoned.
Claims priority of provisional application 61/126,105, filed on May 1, 2008.
Claims priority of provisional application 60/878,016, filed on Dec. 29, 2006.
Prior Publication US 2021/0084894 A1, Mar. 25, 2021
Int. Cl. A01N 25/00 (2006.01); A01N 59/16 (2006.01); C02F 1/50 (2023.01); C02F 1/68 (2023.01); C02F 1/76 (2023.01); C02F 103/42 (2006.01)
CPC A01N 25/00 (2013.01) [A01N 59/16 (2013.01); C02F 1/50 (2013.01); C02F 1/505 (2013.01); C02F 1/688 (2013.01); C02F 1/76 (2013.01); C02F 1/766 (2013.01); C02F 2103/42 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of controlling free chlorine concentration in a body of water using a solid source of chlorine, the method comprising using a dispenser for killing microorganisms in the body of water by placing the dispenser in aqueous communication with the body of water to provide therein an average level of free chlorine ranging from 0.52 ppm to 0.79 ppm, the dispenser comprising:
a first housing having a water accessible compartment containing a source of at least one N-halohydantoin compound for releasing the at least one N-halohydantoin compound when contacted by the body of water, wherein the at least one N-halohydantoin compound comprises dichlorodimethylhydantoin (DCDMH), which comprises two chlorine atoms attached to a hydantoin ring, such that the at least one N-halohydantoin has the formula:

OG Complex Work Unit Chemistry
wherein R and R1 each independently comprises an alkyl group, and wherein X and Y are each chlorine; and
a second housing having a water accessible compartment containing a metal ion donor for releasing metal ions when contacted by the body of water containing the at least one N-halohydantoin, the metal ion donor comprising solid silver chloride.