Point-of-Use Water Systems: The Landscape Dr Jo Burgess 2 nd October 2012

Point-of-Use Water Systems: The LandscapeDr Jo Burgess2nd October 2012

2

Physical landscape

3

Research landscape

Peaks of expertise exist:Durban University of TechnologyCouncil for Scientific and Industrial ResearchUniversity of VendaUniversity of the Western CapeUniversity of JohannesburgTshwane University of Technology Stellenbosch University

Some successesLots more to do

4

Durban University of Technology

Remote Rural Water Treatment System (RRWTS)

Simple gravity-driven microfiltration unit Removes suspended solids, colloids and 95% bacteria from raw water, gives a clear permeate which can be easily disinfectedLab prototype small scale manufacture community-based testing in KZN / E Cape borderlandsEasy to use…

5

Council for Scientific and Industrial Research

AdvantagesAccompanying hygiene education programme.All-in-one treatment (coag/floc, clarification, filtration, disinfection).Locally manufactured.

Some success, fell into disuse

6

University of Venda

Evaluation of numerous POU devices (Centres for Disease Control and Prevention (CDC), Potters for Peace (PfP), etc.)Thorough, multidisciplinary, highly collegialPatel Smart Pot Grand Challenge entryAvoid problems observed with CDC, PfP, etc. designsBetter covers, seals, stands. Lid = washing container for filter.

7

University of the Western Cape

Environmental chemistry / technologyPatel Smart Pot Grand Challenge entryApplying PfP principles to local materialsZeolites & coal fly ashLocally mixed, pressed, dried and fired ceramic filtersImpregnated with silver, thus includes disinfection

8

University of Johannesburg

Patel Smart Pot Grand Challenge finalist: one of only four worldwide.Water and health research focus; microbiology & molecular biologyBacked up by community-based evaluationsThorough, multidisciplinary, highly collegialDeveloped in collaboration with industrial designerSingle container for treatment and storage of water

9

Tshwane University of Technology

Comparative evaluation of many types of filters:

Ceramic, w & w/out silverBiosand, w & w/out zeoliteClay pots, w & w/out silver

Multidisciplinary projects

10

Stellenbosch University

Numerous projects:Nano “teabag”Kleinmond housing - disinfection systems for domestic RWH tanksMultidisciplinary, many collaborations

ServicesSubstructure

Finishes

Roof assembly

RWH Tank

Superstructure

Solar geyser

Photo-voltaic panel

Filtration cartridge systemPhysical filtration, sorption, and biocidal actionNanofibre based filter with carbonFor immediate use (no storage)Comparison to solar pasteurisation

11

In summary

Multidiscplin

ary work

‘Relevant s

cience

does not

automatica

lly sig

nify

socia

l acce

ptance

’

Very ac

tive, h

ighly

colle

gial re

search

ers

Cart before th

e horse

inventions

Recontam

ination of

treate

d wate

r