The EU Water Framework Directive (WFD) requires all inland and coastal waters to reach good chemical and ecological status for surface waters and good status for groundwater in terms of quality and quantity by 2015. The directive also aims to achieve elimination of hazardous substances by 2020.
(WFD factsheet: http://ec.europa.eu/environment/pubs/pdf/factsheets/water-framework-directive.pdf)
Only 15% of the total length of
Wildlife Fund - www.wwf.org.uk)
Nearly 40% of the rivers and streams in the
(American Rivers - http://www.americanrivers.org)
Aeration involves the dispersion of air, and with that dissolved oxygen (DO), into a body of water. A certain concentration of DO is necessary to ensure the occurrence of self-purification processes and it acts as a prime indicator of the water quality for human use as well as for aquatic biota.
Aeration is typically an environmental process. However, due to the low solubility of oxygen and the low rate of oxygen transfer, the DO levels needed for water treatment cannot usually be achieved through natural processes alone. Artificial aeration such as that provided by Hydroventuri’s HiMix™ system, can be used to replicate natural processes, maintain required DO levels and replenish the used oxygen as part of the purification or remediation process. The process also removes volatile-dissolved compounds, which are ultimately responsible for tastes and odours as well as the corrosive nature of water.
The Hydroventuri HiMix™ aeration system can be a core component of the treatment of raw and/or waste water, in order to produce clean water for drinking purposes and/or to treat municipal sewage or industrial wastewater.
For wastewater treatment the Hydroventuri HiMix™ system can provide an enhanced aerobic environment to support the microbial degradation of organic matter. By improving the rate of oxygen transfer and the level of interaction between microorganisms and organic matter, the DO level is raised to allow aerobic bacteria to remove or reduce biochemical oxygen demand of the effluent.
When compared to other aerators, Hydroventuri’s HiMix™ system has the following attributes:
We specialise in treatment systems for: