sewage sludge removal News

  • Silver nanoparticles in sewage sludge harmful to soil microorganisms

    Recent research has found that silver nanoparticles in sewage sludge, which is used on agricultural land as a fertiliser, can be toxic to soil microorganisms. The researchers calculated that a maximum of 30mg of silver nanoparticles per kilogram of sludge can be applied to land before harm occurs, based on typical application rates in Germany of five tons per hectare of farmland every three ...

  • Phosphorus recovery from sewage sludge using Aquacritox supercritical water oxidation process

    Sewage sludge is a potential source of energy. A kilogram of dried sewage sludge contains approximately 20,000 BTU’s of energy. The challenge with releasing this energy is that sewage sludge, when collected from the bottom of a clarifier is 99% water. In order to release the energy present through gasification, pyrolysis or incineration, the water must be removed before oxidation in air can ...


    By SCFI Group Limited

  • Great Lakes Fouled by Raw Sewage

    TORONTO, Ontario, Canada, (ENS) - Detroit, Michigan is at the bottom of the class, performing the worst of 20 cities graded by a Canadian environmental group in a Report Card on how well they manage their sewage. Sierra Legal released its first Great Lakes Sewage Report Card today, an investigative report that analyzes the performance of 20 cities in the Great Lakes ...

  • Sewage project generates renewable gas

    British households are today cooking and heating their homes with renewable gas produced from human waste. Biomethane gas from the Didcot sewage works in Oxfordshire, a joint venture between Thames Water, British Gas and Scotia Gas Networks, will produce enough renewable gas to supply up to 200 homes. The Didcot sewage project marks an important milestone in the UK's efforts to decarbonise the ...

  • Harmful polycyclic aromatic hydrocarbons removed from soil using wastewater sludge and polyacrylamide

    Wastewater sludge is widely used to remove toxic polycyclic aromatic hydrocarbons (PAHs) from soil, and yet the mechanisms underlying this process remain unclear. A new study reveals the extent of PAH removal following different treatments, and could provide a useful resource for those looking to diminish the effects that these pollutants have both on people and on the environment. PAHs have been ...

  • New addition to Sludge Screen range

    Following the launch of the S:Max sludge screen to the UK sewage and wastewater treatment market in 2010 CDEnviro have announced an expansion of the range. The new S:Max SRU10 is designed for operators requiring smaller capacities than that offered by the SRU25 model. “The SRU25 was initially designed for introduction to major sludge processing sites such as the one at Minworth Sewage ...


    By CDEnviro

  • Phosphorus shortage solved through sewage recovery

    Phosphate is a key component in food production and an important element in fertilisers. The expectation is that easily extractable reserves of phosphate will be exhausted within fifty to ninety years due to the growing demand. Grontmij is working on finding a solution and on the more effective use of phosphate. The recovery and reuse of phosphate from waste water plays an important role in this. ...

  • SFPUC demonstrates innovative technology that recycles harmful sewage

    A pilot project at The San Francisco Public Utilities Commission’s (SFPUC) Southeast Wastewater Treatment Plant is the first plant in California to demonstrate a new technology that removes phosphorus and other nutrients from wastewater and recycles them into environmentally-safe commercial fertilizer. The technology was developed by Ostara Nutrient Recovery Technologies Inc. of Vancouver, ...

  • New sewage sampler enables real-time control

    HACH LANGE has launched an innovative new wastewater sampling system, which will open up a new world of opportunity by enabling water companies to continuously monitor sewage at the plant inlet. In the past, it has been almost impossible to monitor influent because of the physical and biological challenges that sewage presents – ragging, biofouling etc. However, following trials at a ...


  • At the leading edge of sewage biogas - now and a century ago

    In the city which built the UK's first anaerobic digester in 1895 and had sewage-gas street lighting around the 1900s, today's state-of-the-art sewage biogas analysis equipment is monitoring today's biogas at South West Water's Countess Wear Sewage Treatment Works in Exeter. On watch Countess Wear's sludge reception centre serves more than ...


    By Geotech

  • Removing hormones from wastewater

    Treated wastewater that is returned to waterways can contain trace organic pollutants that have a negative impact on the environment. In particular, chemicals known as endocrine disrupters, which mimic the effects of natural hormones or otherwise disrupt normal endocrine behaviour, have been found in treated wastewater. According to a recent study, treatment processes could be significantly, and ...

  • CDEnviro offer free sludge screen trials

    “The potential efficiency gains from the widespread introduction of the S:Max across the industry cannot be overstated based on the experience we have had.” So said Severn Trent Water following the installation of an S:Max SRU25 sludge screen at Minworth Sewage Treatment Works in Birmingham, England. Following on from this success CDEnviro have announced the launch of a program of ...


    By CDEnviro

  • Severn Trent increase sludge screening efficiency

    A new sludge screening system has resulted in Severn Trent Water significantly increasing the efficiency of sludge screening operations at Minworth Sewage Treatment Works on the outskirts of Birmingham. Since the new sludge screen has been introduced by Severn Trent the company has reported significant operational efficiencies as a result of increased screenings removal from the imported sludge, ...


    By CDEnviro

  • Dosing upgrades enhance process performance at Hogsmill Sewage Treatment Works

    Three separate upgrades to the chemical dosing plant at Thames Water’s Hogsmill Sewage Treatment Works in Surbiton near Kingston-upon-Thames have improved efficiency and performance at the site and are also designed to meet the latest phosphate discharge consents into the River Thames. Working with partners, the upgrades were designed, built and installed by chemical dosing specialist, Gee & ...

  • WRc demonstrate viability of Bauxsol™ for phosphate removal

    3 April 2006: OXFORD, UK: Following a six-month independent trial by the UK Water Research Council (WRc), VIROTEC’s innovative Bauxsol™ technology has been shown to offer a viable and economic treatment solution for phosphate removal in municipal and industrial wastewater treatment works. European General Manager at VIROTEC, Simon Tillotson, said “We are very excited about the trial outcome. ...


    By Clarity Authoring

  • Removal of COD and dye from textile industry waste water

    COD and dye removal from textile dyeing wastewater was investigated. The adsorbents used in treatment experiments were produced from domestic and industrial sewage sludge. After chemical activation, the sludge was subjected to pyrolysis treatment in order to provide materials with great porosity and a large surface area. Textile industry waste water samples were supplied from dying and finishing ...


  • Wastewater treatment fails to remove all nanoparticles, new EU study suggests

    Nanomaterials are being used increasingly in the manufacturing industry, but questions remain about the best way to efficiently remove these nanoparticles from industrial wastewater processes or sewage treatment plants. Recent research suggests that some nanoparticles escape from treatment plants and are discharged into water. Studies have suggested that nanoparticles can remain in the ...

  • Wastewater experts meet in Cuba to develop plans for reducing pollution of the Caribbean Sea by sewage

    The United Nations Environment Programme (UNEP) and the United Nations Development Programme (UNDP), in collaboration with the Government of Cuba, and the Regional Activity Centre for the Land-Based Sources of Marine Pollution Protocol - Centre for Engineering and Management of Coasts and Bays (CIMAB), will host a four-day regional wastewater management workshop at Hotel Nacional de Cuba in ...

  • Aeration may remove antidepressant drugs from water leaked from landfill

    Aeration is an effective means of eliminating antidepressants from landfill leachate, a new study finds. The concentrations of five different drugs were reduced by this treatment process, which could be an effective means of tackling the growing problem of pharmaceutical infiltration into aquatic environments. Pharmaceuticals, while an important component of modern medicine, can have negative ...

  • Mercury Removal from Exhaust Stacks and Process Gas is a Shifting Billion Dollar/yr. Market

    New technologies, geographies and regulations are creating an ever changing market for mercury removal from exhaust stacks and process gases. This is the conclusion of the McIlvaine Company in N056 Mercury Air Reduction Market. The largest application is coal-fired boilers. Natural gas purification, sewage sludge incinerators, waste-to-energy plants and other facilities are significant ...


    By The McIlvaine Company

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