A decision support system (DSS) tool for the assessment of intervention strategies (Alternatives) in an urban water system (UWS) with an integral simulation model called ‘WaterMet2’ is presented. The DSS permits the user to identify one or more optimal Alternatives over a fixed long-term planning horizon using performance metrics mapped to the TRUST sustainability criteria. The DSS exposes lists of in-built intervention options and system performance metrics for the user to compose new Alternatives. The quantitative metrics are calculated by the WaterMet2 model, and further qualitative or user-defined metrics may be specified by the user or by external tools feeding into the DSS. A multi-criteria decision analysis approach is employed within the DSS to compare the defined Alternatives and to rank them with respect to a pre-specified weighting scheme for different Scenarios. Two rich, interactive graphical user interfaces, one desktop and one web-based, are employed to assist with guiding the end user through the stages of defining the problem, evaluating and ranking Alternatives. This mechanism provides a useful tool for decision makers to compare different strategies for the planning of UWS with respect to multiple Scenarios. The efficacy of the DSS is demonstrated on a northern European case study inspired by a real-life UWS for a mixture of quantitative and qualitative criteria. The results demonstrate how the DSS, integrated with an UWS modelling approach, can be used to assist planners in meeting their long-term, strategic-level sustainability objectives.
Smart Water Metering For Smart Cities
One of a city’s most important pieces of critical infrastructure is its water system. With populations in cities growing, it is inevitable that water consumption will grow as well. The term “smart water” points to water and wastewater infrastructure management system. A smart water system is designed to gather meaningful and actionable data about the flow, pressure and distribution of a city’s water. Smart cities encompass six important sectors that need to work in unison. These sectors...
PeCOD® Analyzer oxygen demand analysis for source & treated drinking waters
MANTECH’s chemical oxygen demand (COD) analyzer is breaking new ground in the science of monitoring source and treated drinking water. In addition to providing 15-minute COD results and biochemical oxygen demand (BOD) estimates, MANTECH’s PeCOD® Analyzer measures natural organic matter (NOM) in raw and treated drinking water. The NOM Analyzer™ — which is the drinking-water application of MANTECH’s novel PeCOD® COD-testing system — does what no other technology has...
APSI mode simplifies MS spectral analysis
Analysis of gaseous species by quadrupole mass spectrometry involves ionisation of the molecular species most typically by the electron bombardment technique, the ionisation process creating fragmentation ions additionally to the parent ion. Spectral interpretation can then be compromised by spectral interference in some gaseous mixtures. Hiden Analytical introduce the APSI(Appearance Potential Soft Ionisation) mode to their full range of gas analysis systems to enable reduction of the fragmentation ion effect...
Application of adaptive neuro-fuzzy inference system (ANFIS) for modeling solar still productivity
Climate change is a major challenge to humankind. Solar desalination is a strategic option for overcoming water scarcity as a result of climate change. Modeling of solar still productivity (SSP) plays a significant role in the success of a solar desalination project to optimize capital expenditures and maximize production. A solar still was used to desalinate seawater in this study. An adaptive neuro-fuzzy inference system (ANFIS) for prediction of SSP was developed with different types of input membership...
Water Treatment Optimization - Case Study
Drinking water treatment in North America has stringent requirements for effluent water quality, with a great amount of attention being drawn to the presence of hazardous disinfection by-products (DBPs) persisting through water distribution systems. The operation of water treatment plants involves addition of various mixing agents to help with coagulation and settling of organics in the raw water supply, as well as the addition of chlorine for final disinfection. Optimizing water treatment to reduce the risk of...