Anagram & Information om | Engelska ordet LEACHATE

Exempel på hur man kan använda LEACHATE i en mening

• While the landfill was shut down in 1992, samples by the Environmental Bureau of Investigation and the Petitcodiac Riverkeeper showed that ammonium levels around the leachate exceeded Canadian quality guidelines by as much as 15 times, and contained heavy metals, petroleum hydrocarbons, and PCBs.
• The leachate mixture is sealed in extraction vessel for general analytes, or possibly pressure sealed as in zero-headspace extractions (ZHE) for volatile organic compounds and tumbled for 18 hours to simulate an extended leaching time in the ground.
• The risks of leachate generation can be mitigated by properly designed and engineered landfill sites, such as those that are constructed on geologically impermeable materials or sites that use impermeable liners made of geomembranes or engineered clay.
• Conditions and changes within the landfill can be observed with electrical resistivity tomography (ERT) to detect sources of landfill gas, and leachate movements and pathways.
• However, on a plant where the gas production rate is sufficient for direct use in an industrial process that could be classified as part of the circular economy, and that may include the generation of electricity, the production of natural gas quality biogas for vehicle fuel or for heating in buildings, drying refuse-derived fuel or leachate treatment, gas flares are used as a back-up system during down-time for maintenance or breakdown of generation equipment.
• In such cases the geotextile component acts as a drainage medium, since it can conduct water, leachate or gases away from direct contact with the geomembrane.
• The aerobic environment decomposition is accelerated and amount of VOCs, toxicity of leachate and methane are minimised.
• Highly soluble VOCs, such as MtBE, diethyl ether, and tetrahydrofuran, are evidence of leachate effects, since they are too water-soluble to migrate in landfill gas.
• Remediation for alkaline leachate requires active aeration in order to promote carbonation, recirculation of drainage waters over stockpiled or lagooned residues, and acid dosing.
• A 2016 investigation by Hong Kong's Environmental Protection Department (EPD) found that SITA failed to meet their contractual obligation to maintain a minimum temperature of 1,000 °C for the flaring of landfill gas in the leachate treatment plant at the closed Pillar Point Valley Landfill, in an attempt to save fuel expenditure.
• Until it deteriorates, the liner retards migration of leachate, and its toxic constituents, into underlying aquifers or nearby rivers from causing potentially irreversible contamination of the local waterway and its sediments.
• Other copper minerals, such as the oxide cuprite and the sulfide chalcocite may require addition of oxidizing agents such as ferric sulfate and oxygen to the leachate before the minerals are dissolved.
• Landfill gas, principally methane and carbon dioxide, is formed once anaerobic conditions are achieved within the landfill, and leachate is formed as liquids percolate through landfilled waste and pick up a cocktail of toxic and contaminating elements from the multiple waste fractions that comprise Municipal Solid Waste.
• The current system (detailed in) consists of an S3 Environmental Solutions Ltd nitrification tower (a trickling filter also known as an aeration or biofilm tower) through which the leachate is circulated over a biofilm supported on a plastic media.
• The toxicity of leachate is mainly caused by the alkalinity and sulphides; leachate also includes chlorides, oil products, heavy metals, and PAHs which are carcinogenic.
• Coal mining is also a very significant source of metals, especially Iron, Zinc and Nickel particularly where the coal is rich if pyrites which oxidises on contact with the air producing a very acidic leachate which is able to dissolve metals from the coal.
• Further investigation on URMS and tire wear leachate narrowed down the scope from thousands of chemicals to one unknown chemical, which was found as an ozonation product of the common antiozonant 6PPD.
• All tested parameters except Ni and Cr in Ibb landfill leachate exceed the permissible limit required for treated wastewater discharge determined by Yemen's Ministry of Water and Environment (1999).
• Calthemite straw stalactites precipitated (deposited) from hyperalkaline leachate have the potential to grow up to ≈200 times faster than normal cave speleothems precipitated from near neutral pH solution.
• Examples of the design methods he developed include: liner leakage evaluation, drainage systems, leachate collection and leakage detection layers, liner system stability, reinforcement of liners and soil layers overlying voids, geomembrane stress and strain analysis, evaluation of geomembrane properties, connections between geomembranes and rigid structures, geomembrane uplift by wind, and geotextile filters.

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