不同潜流湿地对养猪废水除磷效能的对比研究  

Comparison Study on Two Different Constructed Wetland Systems for Removal of Phosphorus from Swine Wastewater

作　　者：段跟定[1] 刘凯 

机构地区：[1]西安航空学院能源与建筑学院,陕西西安710077 [2]西安市环境监测站,陕西西安710054

出　　处：《中国给水排水》2015年第19期91-95,共5页China Water & Wastewater

摘　　要：以养猪废水为处理对象,对比研究了两种潜流湿地的除磷效能。结果表明,当进水负荷为0.02 m^3/(m^2·d)时,水平潜流湿地(HSSF)和垂直潜流湿地(VSSF)均表现出较高且稳定的除磷能力,对TP的平均去除率分别为88.41%和95.71%;红壤、海蛎壳和废砖块等填料的吸附沉淀作用是湿地系统除磷的主要途径,植物和微生物所起作用不大,但均可通过影响湿地的其他条件而间接影响除磷效率;被截留的磷素在两湿地填料层中具有不同的空间分布特征,填料层中无机磷的分布特征与全磷一致且含量较高,进一步证明了填料的吸附沉淀作用是湿地除磷的主要途径;与水平潜流湿地相比,垂直潜流湿地因其独特的结构设计,更有利于对养猪废水中磷素的去除。The phosphorus removal efficiencies of two different subsurface flow constructed wetland systems in treatment of swine wastewater were compared. The results showed that when the influent load-ing rate was 0.02 m^3/（ m^2·d）, the horizontal subsurface flow constructed wetland （HSSF） and vertical subsurface flow constructed wetland （VSSF） both showed high and stable phosphorus removal ability, and the average removal rates of TP were 88.41% and 95.71% , respectively. The adsorption and sedi- mentation of substrates including red soil, oyster shell and broken bricks played a major role in phosphorus removal during the experimental period, whereas plants and microorganisms could influence phosphorus removal rates indirectly by influencing other conditions of CWs. The phosphorus intercepted in the two CWs had different spatial distribution characteristics. The high content of inorganic phosphorus in total phosphorus also showed that adsorption and sedimentation of substrates played a major role in phosphorus removal. Compared with HSSF, VSSF was more effective in removing phosphorus from swine wastewater due to its better design of structure.

关 键 词：养猪废水 磷素 水平潜流湿地 垂直潜流湿地 填料 

分 类 号：X713[环境科学与工程—环境工程]