water supply algal bloom Articles

  • Impacts of Climate Change on the Occurrence of Harmful Algal Blooms

    Climate change has been occurring naturally as well as caused by anthropogenic activities over the decades. In relation to the fresh and marine water, the concentration of greenhouse gases results in temperature rise of surface water, lower pH and changes to precipitation, evaporation and vertical mixing of water. All these consequences of changing the environment in combination with excessive ...


    By LG Sonic

  • Algal Treatments

    Global warming means algal blooms can only increase. Tom Hall of the WRc Group reports on the latest research into treatment programmes Excessive algal growth in raw water reservoirs can cause severe problems with water supply, even in a traditional UK climate. Global warming means algal problems could become more frequent and acute in the UK, so effective control measures will become more ...


    By WRc plc

  • Tackle Harmful Algal Blooms With Near-Surface Circulation - Case study

    A Georgia county is winning the battle with blue-green algae (cyanobacteria) on its surface water supply through near-surface circulation. Circulators paid for themselves in three years, cut the need for chemicals, restored water quality and the natural food chain, and eliminated taste-and-odor issues for potable water customers. LAKE VARNER in Newton County, Ga., about 35 miles east of ...


    By Medora Corporation

  • Economic impact of algae blooms

    How much does an algae bloom cost? What is the price of inaction? Algae and cyanobacteria blooms are issues of considerable concern for environmental agencies, drinking water companies, municipalities and people alike. The incidence of Harmful Algae Blooms (HAB), along with its adverse effects, have been increasing in recent years as a result of climate change, increased fertilizer runoffs into ...


    By LG Sonic

  • Hydrogeological and economical simulations: emergency water supply for Muscat

    Urban water in Gulf Cooperation Council countries is principally supplied from desalination plants. However, desalination could be interrupted by natural hazards such as cyclones or harmful algal blooms. Four scenarios have been considered to help public institutions in Muscat to establish a water strategy for emergency situations. The numerical simulations of groundwater pumping have shown that ...


    By IWA Publishing

  • Interspecific competition among Cyanophyta, Chlorophyta and Diatom in response to pulse supply of nitrate

    In summer, Cyanobacteria, Chlorococcalesa and Diatom occupy 99% of total phytoplankton biomass in Taihu Lake, China. Nitrogen plays an important role toward shaping that structure of phytoplankton. Three typical species were chosen to investigate the competing relationship among those three phylum by the nitrate dynamic experiments and supply experiments. Five growth parameters of Microcystis ...


    By Inderscience Publishers

  • Water mixing in waste lagoons

    Man-made lagoons have been used worldwide for the treatment of domestic and industrial wastewater, it seems, forever. All waste lagoons were first designed and thoughtfully planned considering their locations, soil makeup, and waste reduction processes prior to being implemented. The biological process of organic waste reduction is always a consideration of waste lagoon designs. There are three ...


    By Reliant Water Technologies

  • Raw water reservoir - Case study

    Topics: blue-green algae, taste & odor, THM removal, TTHM, hypolimnetic oxygenation, MN and FE control, treatment savings ...


    By Medora Corporation

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

    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

  • Can incentives protect Canada’s clean water?

    Clean water is a vital, valuable resource for Canada. We drink it. We grow food with it. We generate power using it. We use it as an input to industry, from manufacturing to oil and gas production. We swim, splash, and paddle our canoes in it. And clean water isn’t valuable just to humans; it also underpins essential ecosystems all over the country. But do our policies reflect the ...


    By GLOBE SERIES

  • The Potential of Solar-Powered Water Circulators to Help Solve Serious Water and Energy Problems in the U.S.

    With increasing human populations comes the corresponding increased need for improving water quality in lakes, wastewater ponds, potable water reservoirs, and other water storage facilities. Providing circulation within water reservoirs of all types has long been known to provide meaningful benefits, but the costs to achieve sufficient circulation through diffused aeration or mechanical mixers ...


    By Medora Corporation

  • Supercritical water oxidation presented as alternative to incineration – An update

    Environmentally benign waste disposal is becoming a more and more acute problem. A process now being commercialised, supercritical water oxidation is demonstrating extremely efficient organic waste destruction (99.99%) plus excellent environmental characteristics (none of the emissions associated with incineration). The process is especially suitable for the treatment of wastewater and sludges ...


    By SCFI Group Limited

  • Control Algae and Improve the Water Quality in Waste Stabilization Ponds

    Due to population growth, accelerated urbanisation and economic development, the quantity of waste water generated is increasing globally. Mainly in low-income areas, a large proportion of the waste water is discharged directly in the environment. When the waste water is treated, the treatment plants may not remove certain pollutants that can have a negative impact on the people and ecosystem. ...


    By LG Sonic

  • Minnesota debates phosphorus discharge limits for improved water quality

    City leaders across the Minnesota River Basin are protesting proposed phosphorus standards, which they contend will be too expensive and have little or no effect on water quality. In January, 41 of the 147 Minnesota cities in the basin outlined their objections in a letter to the governor and the Minnesota Pollution Control Agency. Many of these cities’ wastewater treatment plants ...


    By Fluence Corporation

  • Monitoring, environmental emergencies management and water treatment improvement of freshwater lakes in China: the Chao Lake case study

    Severe eutrophication of freshwater lakes, with the subsequent risk of algal blooms, has a critical effect on the safety of drinking water supplies in China and is one of the main environmental emergencies in the country. This paper focuses on Chao Lake, a large, shallow eutrophic lake used as a source of drinking water. The study considers the possibilities of improving the lake monitoring ...


    By IWA Publishing

  • Algae Enumeration and Identification

    Algae Enumeration and Identification Algae are ubiquitous in virtually all aquatic environments and are important bioindicators of water quality. They are frequently used to assess and monitor the health of aquatic systems. On the other hand, they are also responsible for imparting undesirable flavors to potable water supplies and pose potential health threats, particularly during algal blooms. ...


    By Analytical Services, Inc

  • Algae control in Auckland Dam - Case Study

    Five solar-powered algae control systems where installed in the Lower Nihotupu Dam in Auckland, New Zealand to reduce the levels of blue-green algae. The project started in December 2016 and so far, the project appeared to be of great success with the blue-green algae count over summer 90 per cent less than the previous year. The Challenge: Reduce Blue-green Algae Count The ...


    By LG Sonic

  • Development of Use-Based Chlorophyll Criteria for Recreational Uses of Reservoirs

    ABSTRACTThis investigation was sponsored by the Texas Water Conservation Association (TWCA) with support from the Association of Metropolitan Sewerage Agencies (AMSA) and the Texas Association of Metropolitan Sewerage Agencies (TAMSA). The study was conducted by seven Texas river authorities in association with Dr. William W. Walker, Jr., Ph.D., and Alan Plummer Associates, Inc. (APAI). Its ...

  • Why are we monitoring nutrients at different depths?

    Recently, LG Sonic introduced the MPC-Lab, an innovative monitoring buoy that can monitor algae, physico-chemical variables, and even nutrients such as nitrogen and phosphorus in near real-time and at different depths in a body of water. Combined with our other monitoring tools, this system offers a unique way to detect the spatial and temporal patterns of nutrient concentrations which play a ...


    By LG Sonic

  • Cyanobacteria successfully monitored and controlled by using ultrasound

    Cyanobacteria- also known as blue-green algae- cause problems when blooming in lakes, ponds and reservoirs. Mainly due to the production of toxins, cyanobacteria cause fish kill and the death of other aquatic animals. They also affect human beings, causing paralysis and skin irritation, and they are even thought to be related to the occurrence of liver cancer. In drinking water reservoirs, the ...


    By LG Sonic

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