- Micropollutant Removal
- Perspective ARTICLE
- Treatment of micropollutants - SUEZ Group
- Treatment of micropollutants
Our solutions and technologies Four complementary micropollutant treatment technologies The technologies employed to treat micropollutants in water depend on the physical and chemical properties of the compound present in the water.
As a specialist in water treatment, SUEZ proposes four complementary processes to remove micropollutants:. Treatment of micropollutants by biological degradation Biological treatment uses a wide range of microorganisms, mainly bacteri a. Microorganisms transform biodegradable material through the absorption of soluble and suspended particles contained in wastewater, into simple products such as carbon dioxide and additional biomass, or nitrates and gaseous nitrogen. Certain bacteria in activated sludge have enzymes with affinities for specific micropollutants. They can therefore break down or transform these substances.
Other bacteria mineralise micropollutants by using them as a source of carbon and energy. The more thorough the biological treatment, the more effectively it removes micropollutants.
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Treatment of micropollutants by adsorption Adsorption is a surface phenomenon by which molecules attach to an adsorbent solid using various processes that vary in intensity physical or chemical adsorption. Activated carbon is widely used in the adsorption of micropollutants.
Large image. Oxidation of micropollutants by physical-thermical techniques Oxidation by physical-chemical means is used in water treatment to break down organic compounds and to transform non-biodegradable polluting agents into substances that can be assimilated by bacteria.
The choice of oxidizing agent is a question of intelligent selection according to the pollution that must be removed. Ozone is a very unstable gas as it contains three oxygen atoms.
This inherent instability affords it an extensive capacity for oxidation. Membrane separation for micropollutant retention The membrane separation technique uses pressure to force water across semi-permeable membranes. Membranes form a physical barrier to micropollutants: they allow water to pass through but trap suspended solids to which micropollutants are attached. Ultrafiltration is very efficient for pesticides and other organic compounds as the membrane pore diameters are between 1 and nm. Nanofiltration separates compounds in solution with a size similar to a nanometre, hence its name.
This technique is often used to soften water.
Treatment of micropollutants - SUEZ Group
Reverse osmosis captures almost all micropollutants due to the cut-off thresholds of the membranes suited to the molecular size and weight of compounds to be trapped. It is so effective that minerals need to be added to avoid user dehydration when the resulting water is consumed.
Membrane filtration treatments are extremely effective in removing micropollutants without having to use chemical products.
Smart control centres for water Read also. Drinking water production Find out more.
Wastewater treatment and reuse Find out more. Another environmental concern is the amount of water being consumed in industrial processes and also the contribution this has to operational costs for business owners. Many organisations are turning to a more sustainable method of water use which includes reusing process water following treatment to reduce environmental impact and overheads.
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Water drawn from rivers, boreholes or underground aquifers can often be contaminated by organic micropollutants, meaning that it requires careful treatment prior to domestic use or use as industrial process water. These pollutants can enter water sources from hazardous waste sites, landfills, pesticides used for agriculture and industrial activity. Therefore, it is important that utilities companies continue to monitor the composition of the water they are extracting and implement an effective treatment solution for these tough-to-treat substances.aptholari.ga
Treatment of micropollutants
Energy use for the removal of micropollutants to below regulatory limits averages 0. If preferred, treated water is also safe for reuse as process water within the business. This saves utility costs and boosts positive Corporate Social Responsibility as pressures rise in relation to sustainable operations. This is of particular benefit when water is extracted for distribution by utilities companies as micropollutants found in source water can surpass traditional treatment.
Arvia are committed to providing a cost and technologically effective and sustainable solution for reaching the goal of micropollutant-free water and wastewater. Get in touch to discuss your water or wastewater treatment challenge today.