Water Reservoirs Articles

  • Importance of Inspecting Reservoirs

    Inspecting Reservoirs – what is the importance of them, why they are inspected, and how ROVs help pave the way for low-cost, regular maintenance. What is a Reservoir? Deriving from the French word réservoir meaning “storehouse,” a reservoir is exactly that – a storage place for water. More often than not, these bodies of water are ...


    By Deep Trekker Inc.

  • Hart`s E&P: Smart drillpipe technologies for the driller’s toolbox

    Advances in technology boost successful development of new LWD and drilling technology offshore the Norwegian Continental Shelf. Wired drillpipe (WDP) technology was implemented on a multiple-well project located offshore the Norwegian Continental Shelf. The operator’s main objective was to drill each well as cost-effectively as possible while making sure that the wellbore placement ...


    By Baker Hughes

  • Case study - Reservoir Aabach Germany - Continuous monitoring of contact pressure

    With a total volume of approximately 20 million cubic meters of water and a length of 450 meters, the reservoir supplies drinking water for 200.000 people in the area and fulfils also an important  function in the flood protection there. With the new monitoring solution it was possible to reduce the workload and cost for collecting, reading out and transmitting of data significantly. An ...

  • Flora Digital prints with Renishaw`s optical encoders - Case Study

    Background What is the maximum resolution of the human eye? There are a number of factors that influence this including viewing distance, lighting conditions and eye health. In general a healthy human eye has a maximum resolution of 350 DPI or 73 µm (1 arc min) at the normal reading distance (250 mm). Irrespective of future breakthroughs in printing technology, there ...


    By Renishaw plc

  • Case study - Mazzei aeration system solves lagoon odors and high maintenance problems

    The Problem: A large vegetable processing facility was experiencing problems with its lagoon surface aerators. The company’s treatment process includes a collection and screening assembly, two anaerobic stabilization ponds and a 40 million gallon aerated lagoon. The aeration lagoon is used for BOD reduction and polishing before the water is discharged to a near-by creek. Several surface ...

  • Case study - Floating covers reduce TSS, improve chlorine disinfection

    Problem: Algae and ultraviolet (UV) rays were adversely affecting chlorination in an upstate New York reservoir and Southern Florida WWTF. Algae was shielding embedded bacteria from chlorine, making the bacteriacide ineffective, thus requiring the chlorine dosage to be increased. Algae increased the chlorine demand along with exposure to UV which dissipates un-stabilized chlorine. Both ...

  • Algae Control in Lakes and Reservoirs

    There are plenty of harmful algal bloom related cases worldwide but what is evident is that their number elevates with each year. Excessive cyanobacteria (blue-green algae) and green algae growth in a water reservoir can have negative consequences for the water quality. The water turns green, sand filters can clog, and some algae can produce geosmins and MIB, giving the water an ...


    By LG Sonic

  • A PSO approach for optimum design of dynamic inversion controller in water distribution systems

    Water distribution systems have become immensely complex due to ever increasing water demand and sporadic availability of water at the sources. Generally, water management issues are handled through human intervention, which naturally leads to incompetent trial and error procedures. Moreover, the non-linear system dynamics and sequential pumping operations involved in the water distribution ...


    By IWA Publishing

  • An integrated model for simulating and diagnosing the water quality based on the system dynamics and Bayesian network

    An integrated model for simulating and diagnosing water quality based on the system dynamics and Bayesian network (BN) is presented in the paper. The research aims to connect water monitoring downstream with outlet management upstream in order to present an efficiency outlet management strategy. The integrated model was built from two components: the system dynamics were used to simulate the ...


    By IWA Publishing

  • Relations between abundance of potential geosmin- and 2-MIB-producing organisms and concentrations of these compounds in water from three Australian reservoirs

    Relationships between the abundance of potential geosmin- and 2-methylisoborneol-producing (2-MIB) cyanobacteria and bacteria, and concentrations of the two taste and odour compounds (T&Os) were examined in a 7 day incubation of natural water from the surface and bottom of three reservoirs in southeast Queensland, Australia. Only a single known T&O-producing cyanobacterium ...


    By IWA Publishing

  • Nutrient load concept-reservoir vs. bay impacts: a case study from a semi-arid watershed

    Large flow-through reservoirs and lakes possess environmental gradients and monitoring programs are mostly adapted for cost and time effectiveness. Bay areas are often more isolated from the main water body and are likely to have unobserved different environmental processes and impacts. This study was performed at the Itaparica Reservoir, São Francisco River, located in semi-arid Northeast ...


    By IWA Publishing

  • Case study - Algae control in raw water reservoir Ecuador

    Before the installation of the LG Sonic e-line equipment algae grew on the surface and settle down on the liner before entering the drinking water treatment plant. To cover the 24.000 m2 of water surface, it was decided to install 3 devices.   The Challenge: Green Algae Covering the Sides of the Lagoon Located in Santa Elena’s peninsula, the 42.000 m3 raw water ...


    By LG Sonic

  • Case study - Algae control in East Dorset raw water reservoir

    Bournemouth Water has installed four MPC-Buoy systems to monitor and control algal blooms at Longham Lakes. After the installation of the MPC-Buoy systems a dramatic reduction in the concentration of algae was experienced. The Challenge: Installing an Environmentally Friendly Solution to Control Algal Blooms The objective of the project was to reduce algae concentrations . ...


    By LG Sonic

  • An environmental perspective on the water management policies of the Upper Delaware River Basin

    Since 1954, the Delaware River has been managed under the framework of a Supreme Court decree and the subsequent concomitant intergovernmental collaboration between New York State, New Jersey, Pennsylvania, Delaware, New York City (NYC) and the US federal government. Taking an environmental perspective, we review the evolution of water release policies for three NYC reservoirs from the ...


    By IWA Publishing

  • Modeling of eutrophication and strategies for improvement of water quality in reservoirs

    The purpose of this study is to survey the thermal regime and eutrophication states in Ilam reservoir in Iran as the case study. For this purpose and to find solutions for improving the water's quality in the reservoir, two general strategies for reducing the entering pollution loads and water depletions from the reservoir's outlets were analyzed by use of the CE-QUAL-W2 model. Results of the ...


    By IWA Publishing

  • Evolution of rainwater harvesting and use in Crete, Hellas, through the millennia

    The low water availability in several regions of southeastern Hellas and particularly in several islands, such as Crete, has resulted in the construction of various types of water reservoir for collection and storage of rainwater, since their very early habitation. Since then, technologies for the construction and use of several types of cisterns have been developed. In Crete during the Minoan ...


    By IWA Publishing

  • Occurrence of toxic cyanobacteria and microcystin toxin in domestic water storage reservoirs, Egypt

    Residents in many developing countries store treated drinking water in tanks or reservoirs because of intermittent and infrequent water supplies. Many studies have focused on bacterial contamination of domestic reservoir waters, the cyanobacterial and algal contamination is largely unexplored. Therefore, the present study investigates toxic cyanobacteria and their microcystin (MC) toxins in ...


    By IWA Publishing

  • Dynamics of cyanobacteria and cyanobacterial toxins and their correlation with environmental parameters in Tri An Reservoir, Vietnam

    This study evaluates the water quality from Tri An Reservoir, a drinking water supply for several million people in southern Vietnam, in terms of cyanobacterial biomass and their potent toxins, microcystins (MCs). Cyanobacteria, their toxins and environmental parameters were monitored monthly for 1 year (April 2008–March 2009) at six stations covering a transect through the reservoir. Dynamics ...


    By IWA Publishing

  • Sludge reduction performance focus: Lagoon sludge case study

    In-Pipe Technology Pipe Technology® Company, Inc., Company, Inc., Company, Inc., is an effective, environmentally is an effective, environmentally is an effective, environmentally-friendly, and fiscally friendly, and fiscally responsible method to reduce accumulated lagoon solids. By reducing accumulated sludge volumes by 40% to 85%, In- volumes by 40% to 85%, In-Pipe Technology has helped ...

  • Reference: Potable water disinfection in Luxembourg nature reserve

    The Obersauer Nature Reserve in the Luxembourg Ardennes is a natural paradise of valleys, wet meadows and forests. In the heart of the reserve is the Esch-sur-Sûre reservoir, which provides water for around 80% of the country's population. Clean potable water for Luxembourg The 3.8 km² reservoir above the community of Esch-sur-Sûre was built in the 1950s in response ...

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