tailieunhanh - Hazardous Industrial Waste Treatment - Chapter 6

Cân nhắc cho quản lý nước mưa và các khía cạnh xử lý ô nhiễm và cân nhắc Các khía cạnh ô nhiễm của nước mưa có liên quan tới các chất trở thành cuốn theo trong nó từ quan điểm của điểm xả vào một cơ quan nước. Nước mưa bắt nguồn từ những đám mây và ô nhiễm đầu tiên của nó là từ các nguồn ô nhiễm có trong không khí chúng ta hít thở. Đáng chú ý nhất và cũng được biết đến là ô nhiễm liên quan đến mưa axit | 6 Stormwater Management and Treatment Constantine Yapijakis The Cooper Union New York New York . Robert Leo Trotta Sullivan County Division of Public Works Monticello New York . Chein-Chi Chang District of Columbia Water and Sewer Authority Washington . . Lawrence K. Wang Zorex Corporation Newtonville New York . and Lenox Institute of Water Technology Lenox Massachusetts . CONSIDERATIONS FOR STORMWATER MANAGEMENT AND TREATMENT Pollution Aspects and Considerations The pollution aspects of stormwater are related to the substances that become entrained in it from its point of origin to its point of discharge into a water body. Stormwater originates from the clouds and its first contamination is from pollution sources contained within the air we breathe. Most notable and well known is the pollution related to acid rain. Acid rain is generally stormwater that has absorbed airborne contaminants propagated by the burning of sulfur-bearing fuels used for heating and power generation. The oxidation of the sulfur and subsequent reaction with atmospheric water vapor produces sulfuric acid. This is but one example of a mechanism that contributes to the contamination of stormwater. Further details with respect to acid rain and other pathways involving the entrapment of pollutants in stormwater are discussed in Section . In industry there are many compounds that in the presence of water and other substances could lead to the development of acidic caustic or poisonous characteristics in stormwater. Of particular interest in this regard is the possible entrainment of nutrients organics inorganics heavy metals pesticides volatile organics oils greases and other pollutants. The contaminants can enter into stormwater in the form of liquids floatables grit settleable solids suspended solids soluble substances and dissolved gases. These substances in significant concentrations can have an adverse impact on fish and plant life contained within .