Location: Amsterdam RAI
Session: Water treatment options and dealing with emerging substances
Theme: Integrating Water and Resource Management
Interactive session with presentations of local or regional case(s) that will be matched with promising solutions on the theme of integrating water and resource management. The focus will be on water treatment options and dealing with emerging substances. There will be diverse forms of interaction between presenters, audience and/or panel.
Location: Amsterdam RAI Room: E102
Theme: Integrating Water and Resource Management
Interactive session with presentations of local or regional case(s) that will be matched with promising solutions on the theme of integrating water and resource management. The focus will be on water treatment options and dealing with emerging substances. There will be diverse forms of interaction between presenters, audience and/or panel.
E102 - Amsterdam RAISubsession
Chemical-free removal of solids and pollutants from wastewater
Recent trends and developments in the wastewater treatment field show increasing prices of chemicals on a global scale, more environmentally concerned companies and reduced prices of electricity in certain regions. Therefore, there is an increasing need for chemical-free (electrical) wastewater treatment. The use of chemicals is an important part in the most common techniques for pre-treating wastewater, the coagulation-flocculation process combined with dissolved air flotation (DAF). Electrocoagulation can replace the conventional chemical approach and correlate to the abovementioned trends with a feasible wastewater treatment solution. The electrocoagulation system i-NEC is integrated with DAF and thus provides an innovative solution combination for wastewater treatment. Its feasibility is shown in the business case example for a wastewater treatment at a health care products facility (capacity 400 m3/d), showing a 1.7 year payback period for the i-NEC combination with DAF. This low payback period is the combined result of low operational costs (OPEX) due to the fact that no chemicals are consumed, and less sludge production and disposal compared to conventional pre-treatment.
Chemometric approach to evaluate treatment options dealing with emerging substances
Due to anthropogenic activities, freshwater systems worldwide are confronted with thousands of compounds, while each compound has its own chemical (re)activity. It is impossible to measure the effectivity of treatment processes for each individual compound, so modelling is an important way to predict their behaviour. In order to build such models, data should be gathered for a representative set of compounds. Therefore, we developed a procedure that results in a representative sample of the whole population of CECs, in order to determine the effect of treatment processes. Chemical-structural properties (descriptors), are selected on the basis of their relevance for a specific treatment step and their values are calculated for a large set of compounds. An algorithm further reduces and subsequently splits the chemometric space into a small number of clusters. Finally, one compound per cluster is selected based on several criteria concerning (1) a representation of how well each data point lies within its cluster, (2) the availability of laboratory analysis methods and (3) a prioritised list of CECs supplied by water companies.
Zero Brine: Matchmaking of brine producers and brine/mineral users.
The Zero Brine project aims to develop the necessary concepts, technological solutions and business models to redesign the value and supply chains of minerals (including magnesium) and water.
Speaker - John Harink, ISPT
Integrated water resources management in Bekaa Valley Lebanon
Due to drought and a large number of refugees, the water scarcity in the Bekaa valley in eastern Lebanon is considerable. The Litani river is heavily poluted, which has led to algae in the reservoir (Lake Quarun), including blue algae. Where possible, groundwater is used for irrigation to make up the shortages. Due to over-drainage, the groundwater level has dropped and replenishment lags behind, partly due to the drought and limited infiltration possibilities .A large program is underway to collect the waste water, construction of treatment plants and industries are being activated to treat their wastewater. However, all ongoing actions do not seem to provide sufficient clean water for the future that will meet the needs of all. In addition, the residents of the Bekaa are not supplied with drinking water24/7, the utilitieslack sufficient financial resources, the leakage loss of unpaid water is considerable and they lack sufficient qualified staff. In this context, a program has been set up with the various Lebanese authorities to address these challenges.
Speaker - Richard Oudhuis, Waternet