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首页> 外文学位 >Performance analysis of established advanced onsite wastewater treatment systems in a subarctic environment: Recirculating trickling filters, suspended growth aeration tanks, and intermittent dosing sand filters.
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Performance analysis of established advanced onsite wastewater treatment systems in a subarctic environment: Recirculating trickling filters, suspended growth aeration tanks, and intermittent dosing sand filters.

机译：在亚北极环境中已建立的先进的现场废水处理系统的性能分析：循环滴滤池，悬浮式曝气池和间歇式加砂滤池。

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摘要

Household onsite septic systems with secondary wastewater treatment in Anchorage, Alaska, were sampled and analyzed for performance parameters during winter and spring months. System types included intermittent dosing sand filters, three types of recirculating trickling filters, and suspended growth aeration tanks. Mean total nitrogen (TN) from the trickling filter and aeration tank effluents was fairly uniform at about 30 mg/l. Total suspended solids (TSS) means were mostly less than 15 mg/l. Biochemical oxygen demand (BOD5) showed considerable variability, with means ranging from 9.2 mg/l for sand filters up to 39.5 mg/l for one type of trickling filter. Local wastewater treatment system certification limits for BOD5 and TN were not met by a large proportion of samples and sites. The data suggested that effluent temperature within the sample range had almost no effect on effluent concentrations of BOD5 or TSS, and only a small effect on removal of total nitrogen.
机译：在阿拉斯加的安克雷奇市，对带有二次废水处理的家庭现场化粪池系统进行了采样，并分析了冬季和春季的性能参数。系统类型包括间歇式定量给沙滤池，三种循环滴滤池和悬浮式曝气池。滴滤池和曝气池出水的平均总氮（TN）相当均匀，约为30 mg / l。总悬浮固体（TSS）平均值大多低于15 mg / l。生化需氧量（BOD5）表现出很大的可变性，均值范围从沙滤器的9.2 mg / l到一种滴滤器的39.5 mg / l。大部分样品和场所未达到BOD5和TN的当地废水处理系统认证限制。数据表明，样品温度范围内的出水温度对BOD5或TSS的出水浓度几乎没有影响，而对总氮的去除影响很小。

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  • 作者

    Williamson, Eric Robin.;

  • 作者单位

    University of Alaska Anchorage.;

  • 授予单位 University of Alaska Anchorage.;
  • 学科 Engineering Sanitary and Municipal.;Engineering Environmental.;Environmental Sciences.
  • 学位 M.S.
  • 年度 2009
  • 页码 72 p.
  • 总页数 72
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;环境科学基础理论;环境污染及其防治;
  • 关键词

  • 入库时间 2022-08-17 11:38:30

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