摘要
结合青藏铁路中小站区生活污水的特点,提出采用生态大棚系统,在青藏高原恶劣的自然环境中建立适宜常规污水生物处理工艺的人工小环境,为生活污水的生物处理提供必需的热平衡、O2CO2循环平衡和水循环平衡。利用有限元分析软件进行热平衡仿真计算,设计生态大棚。通过在实验室对2种常规的污水生物处理工艺进行比选,确定采用好氧生物—土地处理工艺进行青藏铁路中小站区生活污水处理的现场实验。现场实验表明:在生态大棚内部采用4级生物转盘与土地处理相结合的工艺,经过处理的生活污水达到了国家1级排放标准,CODCr去除率达到87.3%以上,可有效保护青藏铁路运营后的高原环境。
Considering the characteristics of the domestic sewage at the medium-small Qinghai--Tibet railway stations, the ecological greenhouse system is adopted, which may constitute a small artificial environment under the atrocious condition of Qinghai-Tibet Plateau area so as to ensure heat balance necessary for normal biological treatment process as well as cyclic balance of O2←→CO2 and water. We design the ecological greenhouse with emulational calculation by the finite element analysis software. Comparing two different normal sewage treatment processes in the lab, we adopt the Aerobe-Land Treatment Process to treat the sewage on the spot. The experimental results show that 4 phase biological rotating disc and land treatment process not only can ensure the treated sewage to meet the national discharge standard Class I and the removal efficiency of the CODCr over 83%, but also can effectively protect the plateau environment after the construction and operation of Qinghai-Tibet railway.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2007年第4期125-129,共5页
China Railway Science
基金
铁道部科技研究开发计划项目(2002Z005)
关键词
生活污水
生物处理
土地处理
生态大棚
青藏高原
Domestic sewage
Biological treatment
Land treatment
Ecological greenhouse
Qinghai-Tibet plateau
