Disinfection and safe storage of household water in POU devices using brominated polymer cartridges'

1
Disinfection and safe storage of household water
in POU devices using brominated polymer
cartridges. J.Williams, M. Bridges, Y.Chen,
J.Santiago, N.Ruehlen, and J. Keene., HaloSource
Incorporated, Bothell, WA,USA.
2
USEPA registration of New Biocidal
Polymer, 2009
3
Agenda for todays presentation

• Structure and form of the biocidal medium
• Range of configurations that it works in
• Profiles of efficacy and capacity
• Potential for disinfection plus storage
  protection
• Summary of developments, some options for the
  future

4
Structure, form function
Br binding to N in heterocyclic rings
5
Function Bromine migrates to the surface to meet
demand

6
Water treatment trainthe elements of purification
Pre-filter to take out rust, coarse particles
Ceramic filter takes out parasites, some
bacteria
Resin medium to take out As, Mn, Zn
GAC or C block
HaloPure disinfecting cartridge
Br residual for storage protection?
Br
Br
Br
7
Wide range of device types is possible
8
Efficacy Profile canister

• Water soluble forms

9
Efficacy profile pitcher
10
Putting a simple format to the test
11
Community reactions to prototype
purifiers, Sulawesi, Indonesia..
12
Residual Br profile pitcher
13
Residual Br vs. E.coli
14
Summary of Developments

• New USEPA registrations of biocidal brominated
  polymers, 2009
• Medium suits POU HWT applications, gravity
  feed,high capacity
• Br brings advantages of potency, speed, tolerance
  of Temp/pH, without compromising taste/odor
• Works in simple devices for low end needs
• Can deliver Br residuals with protective
  potential
• Specific applications of
• Br polymers for storage
• containers are possible,
• need creative development