Water conservation in Katlehong
Following the successful completion of various water conservation/water demand management
(WC/WDM) projects for Ekurhuleni Metropolitan Municipality (EMM) in the 2007/08 financial year, EMM appointed SBA’s
Gauteng regional office earlier this year to continue with the implementation of a zonal approach project for the suburb
of Katlehong. SBA will also develop a holistic multi-year cathodic protection (CP) implementation and monitoring plan
for the Metro.
he Katlehong Zonal Approach Project will address the development
of WC/WDM targets for a prioritised sub-zone in Katlehong in order
to develop a business plan that will be used to secure funding for future
project implementation for the whole of Katlehong. This area comprises
some 30 000 residential erven, with the usual commercial and institutional
nodes associated with residential development.
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The business plan will be prepared once financial, technical and social
investigations and reviews have been conducted. The following phases
will be addressed: Financial: water balances and non-revenue water
analyses; Technical: bulk and domestic meter accuracy verifications;
sectorisation; demand versus supply analyses; logging of minimum night
flows; pressure management; leak detection; network & private properties
leak repairs; and Social: perception and attitude survey and communication
strategy investigations.
Feasibility
study in Bossangoa,
Central African Republic
Bosch Projects was recently commissioned to undertake a
pre-feasibility study in the Central African Republic (CAR) for
a multipurpose cane processing plant that will produce raw
sugar, ethanol and cogeneration power for export to local grid.
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his plant will have the capacity designed to match and maximise the
agricultural potential of the identified project estate.
The Cathodic Protection Project includes the development of annual
cathodic protection infrastructure and monitoring and maintenance tenders.
A business plan will be drafted to secure funding to prepare and implement
a multi-year plan for EMM’s CP systems, focussing on the implementation
of refurbishment, upgrade and installations of CP systems. Monitoring
and maintenance services for existing and new CP systems also need
to be implemented in order to protect bulk water supply steel pipe
networks.
These projects are being implemented by EMM’s Infrastructure Services:
Water Services Division under a Department of Water Affairs and Forestry
support Programme and will be completed early in 2009.
Contact: Lourie Geldenhuys: [email protected]
170 564 people
receive potable water
Stemele Bosch Africa were appointed by the Makana Municipality
for the design augmenting the Grahamstown Bulk Water Supply
that will ultimately provide potable water to 170 564 people.
This project provides for the duplication of the bulk water
pumping main between James Kleynhans water treatment
works and Botha’s Hill reservoir located north-east of
Grahamstown.
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rahamstown’s bulk water supply system is complex due to the difference
in elevation between the water treatment plant and the City of Grahamstown.
The bulk water supply system is separated into two supply zones, namely:
Grahamstown West – Supplied from the Waainek Water Works south of town.
Grahamstown East – Supplied from the James Kleynhans Water Works north
of town.
“Makana Municipality has indicated that any future water requirements for
Grahamstown and the requirements during drought conditions be sourced
from the James Kleynhans Works” says Greg Cummings, Director of SBA, Port
Elizabeth. The total estimated future demand of the James Kleynhans Works
is expected to be 21,05 Ml/d.
Project Engineer, Rowan Bode, is currently implementing the design for this
portion of the works by duplicating the 350mm (9200m long) bulk water
pumping main. This pipeline to be constructed parallel to the existing 350mm
pipeline from the James Kleynhans water treatment works (203m above msl)
to Botha’s Hill reservoir (690m above msl).
The Bosch Projects team and state representatives’ site inspection visit
in the Central African Republic.
Two 350mm diameter pipes would each deliver 121,84 Ml/d for the proposed
future requirements and maintain a velocity of 1,27m/s to a static head of
487m. Both pipes can ultimately deliver 280,5 Ml/d at a velocity of 1.5m/s.
Tenders are expected to be advertised early in the New Year, 2009.
Contact Greg Cummings – [email protected]
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