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Sewage and Effluent

Ozone-based water purification

By: marisa rodrigues     5th April 2002 New environment-friendly technology for purifying water is now available in South Africa. 

Sustainability is key to sanitation

By: marisa rodrigues     5th April 2002 The real issue at the moment when it comes to providing sanitation is sustainability, maintains Mvula Trust technical specialist Richard Holden. 

Jhb gets its water act together

By: marisa rodrigues     5th April 2002 Residents and businesses of South Africa’s largest city, Johannesburg, can rest easier that their water and sanitation services are in good hands, following the successes of the city’s water utility Johannesburg Water (JW) during its first year of operation. 

Concrete shielded from sewage harm

By: marisa rodrigues     5th April 2002 Concrete, the major building material of sewage systems, is unavoidably affected by the stresses of being in contact with wastewater, therefore making protection essential. 

SA waste-to-wood-to-energy initiative

By: marisa rodrigues     5th April 2002 The concept of using trees to treat waste water and simultaneously using the waste water as a resource to grow productive plantations for renewable energy from biomass, is being investigated by the CSIR. 

Sewage: answer to acid mine water problem

By: marisa rodrigues     5th April 2002 In order to reduce the high salinity levels of acid mine drainage caused by the sulphate present in the acid water, an organic source can be added to supply energy to bacteria that are able to reverse reverse the chemical process that caused the acid water in the frst place, reducing the sulphate... 

Trenchless technology specs on the cards

By: marisa rodrigues     5th April 2002 Conducting sewage repairs on some of Johannesburg’s busiest roads can result in major disruptions. In such instances it makes more sense to use trenchless technology (TT) thereby not having to stop traffic to dig up the road, destroy 100-year-old trees or uplift paved entrances in the process. 

New technology neutralises acid mine water

By: marisa rodrigues     5th April 2002 The CSIR has patented a technology for the neutralisation of acid water using powdered limestone, or calcium carbonate. 

New sewage-pump supplier makes progress

5th April 2002 East Rand pump supplier Gresco South Africa is reporting significant progress following its establishment in the local market last year. 

R16-million desalination plant contract secured

5th April 2002 Competing against international contractors, Keyplan has secured the contract to construct a 12 000 m3 per day plant to desalinate effluent arising from Eskom’s Lethabo power station. 

Sewage plants for SA's remote regions

5th April 2002 With the new government White Paper on Sanitation forcing the various relevant authorities to look into the supply of good sanitation to all, the need for affordable and reliable sewage treatment has become more important than ever. 

Wastewater treatment specialist buys a sewage plant business

By: marisa rodrigues     5th April 2002 Specialist supplier of air, gas, fluid handling, combustion and environmental control systems, Howden Africa, has recently acquired the sewage plant business of Protecht Africa. 

Waste-management giant gets BEE partner

By: marisa rodrigues     5th April 2002 One of the biggest waste management companies on the African continent, Enviroserv Holdings, has entered into an agreement with black economic empowerment (Bee) company Lungisa, enabling the latter to acquire an equity interest in four of its divisions. 

Bugs clean paper mill's effluent

5th April 2002 The R600 000 pilot project at Sappi’s Tugela mill, in Kwazulu-Natal, which uses bugs to clean up its effluent, and aims at reducing the mill’s water consumption, is already providing excellent results. 

US knife-gate valves arrive in South Africa

By: Deborah Spicer     16th November 2001 A new range of knife-gate valves became available to the paper and pulp, mining, steel, sugar, automotive and sewerage and effluent industries two months ago. 

Flame traps for explosions

16th November 2001 Johannesburg firm Safurnco offers a range of locally-manufactured tank vents, flame arrestors, vacuum and pressure-relief valves as well as automatic shut-off valves, says marketing director Peter Thieme. 

Struggle for clean water far from over

By: Irma Venter     16th November 2001 The struggle for cleaner water in South Africa is far from over, but the Department of Water Affairs and Forestry (Dwaf) promises it has several programmes in place to deal with issues that made headlines in Engineering News earlier this year, in an article on the country’s national health... 

Rethink what we drink

10th August 2001 Occasionally a new standard can be a bitter pill, making us throw away old habits. 

SA firm wins Mauritius water contract

14th June 2001 South African company Set Point Turnkey Solutions (SPTS) is undertaking a R2,5-million contract for the water-treatment plant at La Marie in central Mauritius, part of the Marc Aux Vacoas water-supply project. 

Protection against pollution essential

By: System Author     10th November 2000 Environmental protection 

Government sanitation programmes need to be more holistic

By: System Author     7th April 2000 Sewage & effluent 

New septic tank technology offers important advantages

By: System Author     7th April 2000 Sewage and effluent 

A call for more public enviro participation

By: System Author     7th April 2000 Sewage and effluent 

Heavy rains cause damage in Gauteng

By: System Author     7th April 2000 Sewage and effluent 

Thumbs up for dry sanitation systems

By: System Author     7th April 2000 Sewage and effluent 

Demand management strategy will save Midrand R100-million

By: System Author     7th April 2000 Sewage and effluent 

Review of cash subsidy approach is proposed

By: System Author     7th April 2000 Sewage and effluent 

Rains increase project expenses

By: System Author     7th April 2000 Sewage and effluent 

More municipalities to consider service partnerships

By: System Author     7th April 2000 Sewage and effluent 

Dry sanitation system well accepted in rural areas

By: System Author     7th April 2000 Sewage and effluent 

Purification of acid mine drainage to be implemented

By: System Author     7th April 2000 Sewage and effluent 

Sanitation, Kwazulu-Natal

By: System Author     5th November 1999 Tenders are invited for the construction of sewer reticulation. 

R95-million sewage plant

By: System Author     30th July 1999 A R95-million sewage plant which is said to reach new heights in environmental sensitivity is under construction near Victoria on the island of Mah 

Solids-free sewage system solves SA sanitation problem

By: System Author     18th June 1999 Asolids-free sewage system first used by a South African engineer in Zambia more than four decades ago, has been used successfully as a solution to sanitation problems in South Africa. Several solids-free systems in Zambia, known as aqua-privy systems, were designed by UCT professor G Marais and... 

Drop in funding flushes out sanitation policy

By: System Author     9th April 1999 A radical about-turn in the implementation of sanitation policy is occurring as communities and local government come to terms with declining funding from central government, Mvula Trust technical manager Richard Holden tells Engineering News. The trust is an implementing agent of the Department... 

Cost-effective pulveriser provided

By: System Author     9th April 1999 The solution to the Cape metropolitan council’s need for a cost-effective pulveriser to prevent solids from entering and damaging the treatment equipment at its Wildevo 

Health and hygiene awareness a priority

By: System Author     9th April 1999 Providing health and hygiene awareness is the first priority of the National Sanitation Co-ordination Office (Nasco), with the actual construction of infrastructure a secondary consideration, technical co-ordinator Piers Vickers tells Engineering News. Nasco was established as an interministerial... 

Oz research gets to bottom of effluent irrigation

By: System Author     9th April 1999 Alarmed at the pollution of their rivers, oceans and lakes, Australian communities are increasingly demanding the disposal of sewage effluent on land – but this can cause equally serious environmental problems, a leading Commonwealth Scientific and Industrial Research Organisation (CSIRO)... 

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