Wastewater Treatment News

Mesobot, an underwater robot capable of tracking and recording high-resolution images of slow-moving and fragile zooplankton, gelatinous animals, and particles, is providing researchers with deeper insight into the vast mid-ocean region known as the twilight zone. © Evan Kovacs/©Woods Hole Oceanographic Institution

Academia’s Climate Change Challenge is Far from Academic

the factors involved are complex—physical parameters include depth, currents, tides and temperatures—the findings show that a mussel-based cleaning system could provide positive effects in estuarine areas, especially in places were microplastics may accumulate, like harbors or near wastewater treatment plants. “Ultimately, we need to be thinking about making plastics part of a circular economy, where end-of-life plastic is reused, recycled or safely disposed,” said Lindeque. “In the meantime, we hope that by using natural ecosystems and processes, like the mussels'

© North Fork Imagery / Adobe Stock

Long Island Sound Water Quality Improving

resulting from almost 50 million pounds of nitrogen pollution kept out of the Sound each year. A peer-reviewed study from the University of Connecticut published earlier this year showed that improved water quality can be attributed to successful programs in Connecticut and New York to upgrade wastewater treatment plants to remove nitrogen before treated sewage is discharged into the Sound.These two state-led programs have reduced millions of pounds of nitrogen pollution from being discharged into Long Island Sound, which has led to increased oxygen concentrations in the Sound in the summer months and

The Canadian Coast Guard Ship Louis S. St. Laurent transiting the Arctic Ocean. This expedition between Norway and Canada collected seawater samples for microplastics analysis. (Photo: Arthi Ramachandra / Fisheries and Oceans Canada)

New Study Finds Polyester Fibers Throughout the Arctic Ocean

Ocean from the Atlantic than the Pacific.The size, shape, colors and polymer identity of the majority of these particles provide additional indications of their origins. These physical characteristics closely resembled what we encountered in our 2018 study of microplastics in the largest domestic wastewater treatment plant in Vancouver.The size and shape of these fibers also closely mirrored those observed in laundry effluent, and builds on a series of studies showcasing the vulnerability of textiles to shedding during home laundry. In fact, we recently estimated that the average Canadian or U.S. household

Simplified graphic showing how seafloor currents create microplastics hotspots in the deep-sea. Image Courtesy NOCS

SCIENCE: Seafloor Microplastic Hotspots Controlled by Deep-sea Currents

are not uniformly distributed across the study area; instead they are distributed by powerful seafloor currents which concentrate them in certain areas.”Microplastics on the seafloor dominantly comprise fibers from textiles and clothing. These are not effectively filtered out in domestic wastewater treatment plants, and easily enter rivers and oceans. In the ocean they either settle out slowly, or can be transported rapidly by episodic turbidity currents – powerful underwater avalanches – that travel down submarine canyons to the deep seafloor (see the group’s earlier research

Cruise Lines Invests $22 Bln in Clean Fuel Tech

exceed air emissions requirements representing an increase in capacity of 17% compared to last year, the report revealed.Additionally, 75% of non-LNG new builds will have EGCS installed, an increase in capacity of 8% compared to last year.100% of new ships on order are specified to have advanced wastewater treatment systems (an increase of 26% over 2018) and currently 68% of the CLIA Cruise Lines global fleet capacity is served by advanced wastewater treatment systems (an increase of 13% over 2018).In port, cruise ships are increasingly equipped with the technology to allow delivery of shoreside electricity

(Photo: NOAA)

Average Sized Dead Zone Expected in the Gulf of Mexico

in the water. The resulting low oxygen levels near the bottom are insufficient to support most marine life.Studies have also shown a multitude of other impacts associated with high nutrient concentrations within watersheds. Such impacts include high nitrates in groundwater, higher drinking and wastewater treatment costs and wasted fertilizer applications.“The Gulf’s recurring summer hypoxic zone continues to put important habitats and valuable fisheries at risk,” said Steve Thur, Ph.D., director of NOAA’s National Centers for Coastal Ocean Science. “Although there has been

(Photo: Almarin)

Almarin Buoys Reach New Markets

estuary in Beirut (Lebanon), several buoys have been supplied complete with moorings and self-contained lanterns to provide safe navigation. Almarin has also supplied buoys in other parts of Lebanon, for example, Balizamar buoys were Veolia’s choice to mark the sea outfall at Ras Nabi Younis Wastewater Treatment Plant. In this case the buoys were provided complete with a monitoring system linked to an online platform that allows the customer to know the status and position of the buoy and lantern at any time as well as a series of pre-determined alarms.   Algeria, in the North African Mediterrenean

Photo: NOAA

Scientists Predict Third Largest GoM ‘Dead Zone’

the third largest dead zone recorded since monitoring began 32 years ago – the average Gulf dead zone since then has been 5,309 square miles.   The Gulf’s hypoxic or low-oxygen zones are caused by excess nutrient pollution, primarily from human activities such as agriculture and wastewater treatment. The excess nutrients stimulate an overgrowth of algae, which then sinks and decomposes in the water. The resulting low oxygen levels are insufficient to support most marine life and habitats in near-bottom waters, threatening the Gulf’s fisheries.   The Gulf dead zone may also

Royal HaskoningDHV's Orders, Profitability Soar

homes in the UK. Denmark’s first national centre for particle therapy which will offer state-of-the-art treatment to thousands of cancer patients. A coastal protection programme in Bangladesh bringing safety from flooding to hundreds of thousands of people. Deployment of the Nereda wastewater treatment technology at the new Irish Water plant for Cork Lower Harbour, significantly enhancing the water quality and the environment in the harbour.   Outlook Erik Oostwegel, Chairman of the Executive Board: “We are halfway through executing our strategy ‘Vision 2018’

The February 2024 edition of Marine Technology Reporter is focused on Oceanographic topics and technologies.
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