Sewage Treatment Technologies

Sewage treatment technologies from Veolia Water Technologies South Africa turn municipal wastewater into benign, high-quality water according to a variety of standards: from restitution to natural water sources, to water for industrial processes or even potable use. Our sewage treatment technologies can also be deployed to extract valuable solid sewage by-products and turn them into usable alternative resources.

A world leader in municipal and industrial water treatment, Veolia has over 350 proprietary technologies, a range of which are designed for treating sewage, from intake to reuse. Showing our strength in sewage treatment technologies, Veolia has:

  • Connected 62 million people to wastewater systems
  • Managed over 3 500 wastewater treatment plants


Scroll down to view our range of sewage treatment technologies!

Contact Veolia today to make use of the world’s leading sewage treatment technologies in your treatment application. Send us an enquiry!

Our range of Sewage Treatment Technologies cover the entire Water Cycle:

Water intake – pumping

Sewage is collected through a sewerage network – a system of cement, concrete, steel, cast-iron or plastic pipes / collectors. This network transports wastewater collected from households and businesses to a wastewater treatment plant where sewage treatment technologies can be deployed.

Pre-treatment

Pre-treatment eliminates floating matter from the wastewater, as well as sand and grease that can have an adverse impact on the efficiency and performance of downstream treatment processes. Our sewage treatment technologies for pre-treatment include:

  • HYDROTECH drum and disc filters
  • BIOLIX™
  • MECTAN

Primary treatment

Primary treatment uses gravity to recover pollution that is naturally settleable and colloidal before the water is fed to biological treatment. Reagents can be used (but are not always needed). Our sewage treatment technologies for primary treatment include:

  • ACTIFLO®
  • MULTIFLO™
  • HYDROTECH disc and drum filters

Secondary biological treatment

Secondary sewage treatment technologies are based on bacteria targeting dissolved and colloidal matters, such as carbon, phosphorous and nitrogen, as they multiply. Secondary treatment needs to be monitored and controlled so that bacteria develops at an optimum level. Our sewage treatment technologies for secondary treatment include:

  • AZENIT™
  • ANOXKALDNES HYBAS™
  • ANOXKALDNES MBBR
  • BIOSEP™ / NEOSEP™
  • BIODENIPHO™
  • BIODENITRO™
  • BIOSTYR™
  • ECOBATCH™
  • ECODISK®

Tertiary polishing

Tertiary treatment helps the feedwater comply with the most stringent parameters. It is employed to eliminate micropollutants and endocrine disruptors by physical and/or physical-chemical processes. It also optimises downstream disinfection processes (such as chlorination, UV). Sewage treatment technologies used in tertiary polishing include:

  • ACTIFLO®
  • ACTIFLO CARB
  • FILTRAFLO™
  • HYDROTECH discfilters

Re-use

If re-use is intended, further upgrading of the feed water is possible using settling, filtration and/or membrane filtration. These technologies meet the most stringent water standards. Our technologies for membrane filtration include:

  • BIOSEP™ / NEOSEP™
  • Microfiltration / Ultrafiltration / Reverse Osmosis

Sludge

Sludge is the solid contents left over by the previous biological treatment steps. It needs to be regularly removed from the feed using a range of sewage treatment technologies tailored to the nature of the sludge and its intended use. Technologies for treating sludge include:

  • ATHOS™
  • BIOCO™
  • BIOTHELYS™
  • EXELYS™
  • PYROFLUID™
  • PYROMIX™
  • SOLIA™ MIX

Odour control

Veolia has a range of methods for dealing with odours. Polluted air generated during the sewage treatment process needs to be continuously extracted. Our odour controlling technologies include:

  • ALIZAIR™ / ALIZAIR™ PACKAGE PLANT
  • AQUILAIR™

Restitution

Once the water has been treated according to the treatment steps outlined above, it is ready to be returned to the natural environment, and can be directed to rivers, lakes, storage tanks, etc.

Let us help you to optimise your operation with the world’s leading sewage treatment technologies. Send us an enquiry.

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