Water&Sanitation Africa November/December 2021

Page 51

INSTRUMENTATION

Unleash Nigeria’s water bounty with affordable sanitation Nigeria is one of Africa’s most water-rich countries, being home to over 215 km3 a year of available surface water. Yet, the country suffers from economic water scarcity, leaving many people without regular access to potable water.

P

oor management of the resource and ageing water infrastructure have led to vast under-usage of what should be a readily available commodity. The situation not only impacts Nigeria’s people but restrains its industrial and socio-economic development as well. If implemented correctly, water sanitation can be an enormous benefit for overall water availability. The question is: how can public utilities achieve such benefits without spending too much? The answer lies in modern ultraviolet (UV) and ozone sanitation systems. UV and ozone are good at removing contaminants from water without overly relying on chemicals such as chlorine. Yet, chemical treatment often still seems more affordable. This logic, though,

suffers when you factor in reliability, sustainability and safety. And while chemicals such as chlorine still belong in water management cycles, their impact on water reuse and the environment can be tempered by introducing UV and ozone purification systems. At face value, such new systems might seem more expensive, but not if one considers the total cost of ownership. When the City of Stockholm in Sweden looked to revamp its water systems for better reuse and sustainability, it weighed its choices based on the total life-cycle costs for 20 years. One brand – namely Xylem’s Wedeco systems – won the tender.

Wedeco systems

Wedeco’s sanitation systems lower costs

through several avenues. The equipment’s acquisition, installation and running costs are highly competitive. Since Wedeco systems are often self-contained, they require minimal maintenance and oversight. Further to that, Xylem’s local partner network provides reliable design and service choices for the client. Today, over a million people in Stockholm can access clean recycled water. In order to deliver clean water, one does not need to replace entire water management sites. By applying the right strategic changes, even incumbent sites can reuse water and expand access to surrounding communities. Such strategic investments in water sanitation can significantly increase the number of Nigerians who enjoy reliable access to clean water.

ABOUT WEDECO Wedeco was founded in 1976 in Her ford, Germany, to develop chemical-free and environmentally friendly water treatment technologies, including UV light and ozone systems. There are more than 250 000 installed Wedeco systems for UV disinfection and ozone oxidation globally in private, public utility and industrial locations. Wedeco introduced ozone technology in 1988 and has been expanding internationally ever since. UV disinfection systems have a number of applications, including water treatment and aquaculture. Ozone disinfection systems have applications in drinking water, wastewater, process water, product polishing, bleaching, ozonolysis/ synthesis and deodorisation.

N OV / D E C 2021

49


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Water training that generates a financial return

3min
page 40

From human waste to water

5min
pages 24-25

PIONEERING STANDARD TO END TOILET USE PARADIGM

7min
pages 21-23

Sedimentation as a water and wastewater treatment process

4min
pages 32-33

HDPE systems gaining traction in agricultural market

2min
pages 56-57

Optimising revenue from service charges

3min
pages 54-55

Leak detection in the Mother City

3min
pages 52-53

Unleash Nigeria’s water bounty with affordable sanitation

2min
page 51

One small sensor helps

2min
page 50

Water and life outweigh politics

4min
pages 48-49

Using good governance, stewardship to ensure water security

5min
pages 44-45

Stormwater management should be firmly on the urban agenda

6min
pages 42-43

Walking away on a high

5min
pages 38-39

The best of both worlds – low-/pour-flush toilets

7min
pages 26-29

From appalling to appealing – wastewater sludge beneficiation

5min
pages 30-31

From human waste to water

5min
pages 24-25

Sedimentation part of a water and wastewater treatment process

4min
pages 32-33

100 Mℓ of water from Ndlambe desal plant

1min
page 37

Successful rehabilitation of Setumo Dam

2min
page 36

Pioneering standard to end toilet use paradigm

7min
pages 21-23

Waterless sanitation – when will it take on?

5min
pages 18-20

It was said in WASA

5min
pages 6-7

CEO’s comment

2min
pages 11-12

Mark Bannister’s story

5min
pages 14-15

Chair’s comment

2min
page 13

Fast-tracking adoption of water-efficient toilets

8min
pages 8-10

Editor’s comment

4min
page 5

Green innovation in practice

1min
page 17

IWS

2min
page 16
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