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所在平台: Udemy |
课程主页: https://www.udemy.com/course/ammonia-removal-from-wastewater/
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课程名称：废水中的氨去除 课程概述：未经处理的废水排放到河流、湖泊、海洋等水体中造成了严重的污染问题。许多污染物对水生生物和人类健康构成了直接威胁，包括重金属、农药、多氯联苯、染料和氮化合物等。工业废水排入饮用水源使人类健康面临风险，尤其是当这些水中含有在人体和土壤中累积的污染物时。人群主要通过饮水暴露于重金属，同时某些重金属能够在人体内生物积累（例如，在脂质和胃肠道中），可能诱发癌症及其他风险。截至目前，已有数千篇文献报道了饮用水中重金属的各个方面，包括重金属的种类和数量、来源、影响其浓度的因素、人类暴露、潜在风险及其去除方法。许多发展中国家面临减少人类重金属暴露的挑战，主要由于其在重金属去除技术上的经济能力有限。因此，我们必须迫切寻求必要的处理方法，特别是针对氨及其化合物，以保护水生环境。针对污染水中氨的处理方法有多种，每种方法都有其独特的优点和应用，常用的方法包括：气相脱除、离子交换和化学处理等。
Drainage of untreated wastewater on surface water like rivers, lakes, oceans, and seas causes a big pollution problem. Many pollutants are acutely harmful to aquatic life and human health (e.g., heavy metals, pesticides, PCBs, dyes, N. compounds, etc…). Drainage of industrial effluent on drinking water sources poses a threat to human health especially if contains accumulated pollutants in human body and soil. Populations are exposed toheavy metals primarily through waterconsumption, but few heavy metals can bio-accumulate in thehuman body (e.g., in lipids and the gastrointestinal system) andmay induce cancer and other risks. To date, a few thousandpublications have reported various aspects of heavy metals indrinking water, including the types and quantities of metals,their sources and factors affecting their concentrations atexposure points, human exposure, potential risks, and theirremoval from drinking water. Many developing countries arefaced with the challenge of reducing human exposure to heavymetals, mainly due to their limited economic capacities to useadvanced technologies for heavy metal removal Hence, we must urgently pursue the necessary treatments, particularly for ammonia and its compounds, to protect the aquatic environment.There are several methods to treat ammonia in polluted water, each with its own advantages and applications. Here are some commonly used methods like: Air Stripping, Ion Exchange, and chemical treatment.
