UC知道翻译一段文字啊。。
来源：百度知道 编辑：UC知道 时间：2024/05/07 11:56:45
Sewage Treatment
Index to this page
* Biochemical Oxygen Demand (BOD)
* Primary Treatment
* Secondary Treatment
* Advanced Waste Treatment
The wastes generated by some 60% of the U.S. population are collected in sewer systems and carried along by some 14 billion gallons of water a day. Of this enormous volume, some 10% is allowed to pass untreated into rivers, streams, and the ocean. The rest receives some form of treatment to improve the quality of the water (which makes up 99.9% of sewage) before it is released for reuse.
Biochemical Oxygen Demand (BOD)
The BOD is an important measure of water quality. It is a measure of the amount of oxygen needed (in milligrams per liter or parts per million) by bacteria and other microorganisms to oxidize the organic matter present in a water sample over a period of 5 days. The BOD of drinking water should be less than 1. That of raw sewage may run to several hundred. It is also
Index to this page
* Biochemical Oxygen Demand (BOD)
* Primary Treatment
* Secondary Treatment
* Advanced Waste Treatment
The wastes generated by some 60% of the U.S. population are collected in sewer systems and carried along by some 14 billion gallons of water a day. Of this enormous volume, some 10% is allowed to pass untreated into rivers, streams, and the ocean. The rest receives some form of treatment to improve the quality of the water (which makes up 99.9% of sewage) before it is released for reuse.
Biochemical Oxygen Demand (BOD)
The BOD is an important measure of water quality. It is a measure of the amount of oxygen needed (in milligrams per liter or parts per million) by bacteria and other microorganisms to oxidize the organic matter present in a water sample over a period of 5 days. The BOD of drinking water should be less than 1. That of raw sewage may run to several hundred. It is also
污水处理 这页的索引 * 生物化学的氧气需求(人体) * 主要治疗 * 次要治疗 * 先进的废料治理 废物大约60% 美国人口引起被收集在下水管道系统和由大约14 十亿加仑水运载每天。这极大的容量, 大约10% 被允许通过未经治疗入河、小河, 和海洋。休息接受某种治疗的形式改进组成99.9% 污水) 的质量水(在它被发布为再用之前。 生物化学的氧气需求(人体) 人体是水质一个重要措施。这是相当数量的措施氧气由细菌和其它微生物需要(在毫克每公升或部份每百万) 氧化有机物当前在水样在5 天中。饮用水人体应该是少于1 。那未处理污水也许运行到几百。这并且称"biological" 氧气需求。 主要治疗 最简单, 和最少有效, 治疗方法是允许未溶解的固体在未处理污水解决悬浮形成烂泥。这样的主要治疗取消人体和实际上无的只三分之一被溶化的矿物。 企图使用被消化的烂泥作为肥料由它的频繁污秽阻碍了由毒性化学制品从工业废料被获得。 次要治疗 但是, 许多治疗设备在北美洲然后通过流出物从主要治疗对次要治疗。这里流出物被带来与氧气和有氧微生物联系。他们划分许多有机物对无害的物质譬如二氧化碳。 主要和次要治疗可能一起取消90% 人体。在氯化从次要治疗去除细菌它的内容, 流出物返回到地方水面以后。 先进的废料治理 主要和次要治疗的组合去除大多数有机物在污水和因而降低人体。但是, 大多数氮气和磷在污水保留在流出物从次要治疗。这些无机营养素可能导致水面的eutrophication 接受流出物导致海藻绽放。避免这, 几个社区增加治疗第三级称三重或先进的废料治理。 几个技术有时间从污水流出物取消被溶化的盐, 但所有是相当昂贵的。
好累啊