liquid-level indicator Articles

  • Why Is Water Level Monitoring Important?

    Monitoring water levels can have numerous environmental benefits and is a popular measurement for a number of different industries and organisations. Below we will discuss some of the common applications water level monitoring devices, as well as some of the valuable insights that recording this can reveal. Remote water level monitoring Whereas ...


    By Aquaread Limited

  • What is the Difference between a gas analyser and a gas monitor?

    Technically, there does not have to be any difference at all. However, semantically, “analysis” might suggest something more scientific with higher precision and better performance than a simple “monitor” which possibly suggests a more indicative output where precision is of less importance. With that said, the two words “analyser” and “monitor” are ...


    By Opsis AB

  • A review on sludge dewatering indices

    Dewatering of sludge from sewage treatment plants is proving to be a significant challenge due to the large amounts of residual sludges generated annually. In recent years, research and development have focused on improving the dewatering process in order to reduce subsequent costs of sludge management and transport. To achieve this goal, it is necessary to establish reliable indices that ...


    By IWA Publishing

  • Digest of EEA indicators 2014

    Environmental indicators are essential tools for assessing environmental trends, tracking progress against objectives and targets, evaluating the effectiveness of policies and communicating complex phenomena to non-technical audiences. The last guide to European Environment Agency (EEA) indicators, published in 2005, focused on the Core Set of Indicators (CSI) (EEA, 2005). Since then, the EEA has ...

  • Indicators of Pollution Management

    'The definition and selection of environmental performance indicators is still at an early stage but the use of indicators is increasing, both for the tracking of trends in pollution and other environmental issues at a large scale (national or regional) and also for the monitoring of Bank projects. This note provides a framework to assist in the selection of appropriate indicators for pollution ...


  • Environmental indicator report 2012

    Environmental challenges are intrinsically linked with the way we live: we depend on our natural environment to supply the natural resources and ecosystem services that sustain our health and well-being, and ensure that our economies prosper. Many of the environmental problems that we face today have existed for decades; what has changed is our appreciation of their drivers and the impacts these ...

  • Environmental indicator report 2014

    Across the world, there is growing recognition that the prevailing model of economic growth, grounded in ever-increasing resource use and pollutant emissions, cannot be sustained indefinitely. In the coming decades, with global population expected to increase to 9 billion people from 7.6 billion today, continued improvements in living standards and well-being will depend on a transition to a ...

  • LIT25 level indicating transmitter controls swimming pool level - Case Study

    The Town of Okotoks, Alberta I never gave it much thought, but what happens to the displaced water when a hundred people jump into a large public swimming pool? It goes into a surge tank - of course. This Greyline LIT25 Level Indicating Transmitter with ultrasonic sensor is installed in the basement of the Okotoks Recreation Centre in Alberta, Canada. The LIT's 4-20mA output is connected to a ...


    By Greyline Instruments Inc.

  • What are the main indicators of water quality?

    “Water is the driving force of all nature;” so said Leonardo da Vinci. The survival of our planet depends on the availability of water and the condition that it is in. It is therefore vital to make sure that it is able to provide a hospitable environment for those that live in it, and is free from harmful levels of substances for those that drink it. Not ...


    By Aquaread Limited

  • Economic sustainability of the economy: concepts and indicators

    Every society can be described as comprising four dimensions, the economic, social, environmental and institutional. Each of them is a complex, dynamic, self-organising and evolving entity in its own right, making the coupled system one of tremendous complexity. For this system to be sustainable, each of the four subsystems has to maintain its capability to survive and evolve, while the ...


    By Inderscience Publishers

  • The development of indicators and core indicators for sustainable development: a state of the art review

    Experience with the establishment of indicators for sustainable development shows that it is scientifically feasible, most useful for communication with the public and a necessary navigation instrument to establish measures pertaining to the sustainability process objective. Usually, long lists of indicators were established to describe the complexity of sustainable development. More recently, ...


    By Inderscience Publishers

  • Indicators to Assess Sustainability of Transport Activities

    Transport is a priority action area for sustainable development. It plays a considerable role in the economy with its omnipresence throughout the production chain, at all geographic scales (Rodrigue et al., 2007). However, transport is also considered to be the sector with the fastest growth in environmental pollution (EC, 2005). Apart from energy generation and industrial processing, transport ...


  • Sustainability indicators: is there consensus among stakeholders?

    Measuring regional sustainability must include local approaches, as sustainability will be determined by what the community values and the relative importance of these values will depend on community expectations, which vary. One of the biggest challenges for introducing strategies for sustainability is that multiple stakeholders are involved and they have differing objectives. This paper reports ...


    By Inderscience Publishers

  • Kerbside Recycling: Indicative costs and performance

    The increase in national recycling rates achieved by local authorities since the publication of Waste Strategy 2000 has been impressive. The growth from 7% to 31% in 2006/07 has been achieved through a mixture of investment and ingenuity, but it has resulted in the creation of a number of different collection systems with many local variations. Although opinions about the merits of the different ...

  • Evolution of sustainable water resources indicators

    ABSTRACTThe Sustainable Water Resources Roundtable (SWRR) is one of several natural resource roundtables with government, corporate, and NGO participation. SWRR has been a subgroup of the Advisory Committee on Water Information (ACWI) since 2001, and operates under authority of OMB M-92-01 and the Federal Advisory Committee Act. The purpose of the Roundtable is to provide an open forum for ...

  • Performance indicators for water supply management

    In the present study specific performance indicators are proposed that express the level of service of a water system subjected to varying operating conditions over time. The proposed methodology has been applied to a specific case study (Sinni water supply system in Basilicata – Italy) to demonstrate the real applicability of the proposed performance analysis that could be very useful to ...


    By IWA Publishing

  • Antimicrobial resistance of fecal indicators in disinfected wastewater

    The main objective of the study was to assess the potential of three systems (UV irradiation, ozonation, and micro/ultrafiltration) operated in a pilot scale in removal of antimicrobial-resistant fecal bacteria from secondary effluent of the local wastewater treatment plant (700,000 population equivalent). The effectiveness of the processes was analysed using the removal ratio of fecal indicators ...


    By IWA Publishing

  • Ecotoxicity of benzo[a]pyrene assessed by soil microbial indicators

    The ecotoxicity of benzo[a]pyrene (BaP) to soil microorganisms was evaluated using the following microbial indicators: soil microbial biomass, respiration, nitrification, and Shannon index. Two soil types, udic ferrosols and aquic cambisols, were amended with 0 mg/kg, 1 mg/kg, 10 mg/kg, 100 mg/kg, 500 mg/kg, or 1000 mg/kg BaP; incubated at 25 °C; and tested on days 28, 60, and 180. The Shannon ...


    By John Wiley & Sons, Ltd.

  • Adaptative methodology of sustainability indicators management by ontology

    The growth of many sectors in modern society has increased the degradation of the environment. Consequently, it generates great ecological unbalance, enhancing the importance of sustainable development, since it stimulates productivity, job and income creation, while reduces the rates of deforestation, erosion and water and soil pollution. In this context, sustainability indicators can be useful ...


    By Inderscience Publishers

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