Relatively cost effective and straightforward method

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relatively cost-effective and straightforward method provided that chemicals are available, and the dosage is altered to the water composition. Regardless of the nature of the treated water and the overall applied treatment method, coagulation-flocculation is usually included, as pre- treatment or as a post-treatment step (Nathanson & Schneider, 2015). Solid Waste Landfill Solid waste landfills are made up of various components, such as a leachate collection, stormwater drainage, and methane collection systems. Other features include the bottom liner, cells, cover, and groundwater monitoring stations. One distinctive feature of natural and technical systems found in landfills is the contamination of the environment and soils with filtration water known as leachate and biogas formed during the decomposition of waste (Zamotaev, Ivanov, Mikheev, & Belobrov, 2018). The leachate collection system is positioned at the bottom of a waste site and usually slopes to a sump. The sump collects and removes the leachate. This collection effort consists of a series of punctured pipes, gravel packs, and a layer
UNIT VIII ESSAY 6 of sand or gravel placed against the bottom liner of the landfill. The collected leachate is moved to a holding tank or pond, where it waits to be treated on-site or hauled wastewater treatment facility. Another feature is cells, which are the area within a landfill approved and constructed for waste disposal. These cells vary in size from a few acres to over 20 acres. These cells are the preparation area for waste coming into the landfill (Advanced Disposal Services, Inc. 2019). Remediation Technology Currently, many countries are facing the problem of remediating contaminated soils. One soil remediation technology is In-Situ Chemical Reduction-Oxidation. This involves the placement of a reducing agent or reducing material in the subsurface to degrade toxic organic compounds to potentially nontoxic or less toxic compounds, immobilizing metals through adsorption or precipitation, and degrading non-metallic oxyanions (Bai, Luo, Shi, Xie, Liu, Zhou, Yan, & Li, 2015). Another technology is In-Situ bioremediation of contaminated soil. This involves using the aerobic process known as bio-venting to supply oxygen to the contaminated soil anywhere above the water table. Outside of oxygen, nitrogen, or other nutrients may also be pushed from the air is used to increase the growth rate of the micro-organisms. Electrostatic Precipitator An electrostatic precipitator (ESP) uses an electrical discharge to charge particles so that particles can be readily deposited onto grounded metal plates, thereby reducing particulate matter from the environment. Advantages of ESP are its ease to clean, low operating costs, high efficiency, able to handle large amount of gas flow rates with low pressure, its ability to remove dry and wet particles of particulate matter and ozone air pollutants and has a flexible temperature design (Day, Xiang, Mo, Clyde, Weschler, Li, Gong, Chung, Zang, & Zhang, 2018). Since the
UNIT VIII ESSAY 7

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