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首页> 外文期刊>Journal of Environmental Management >A study on the effects of different hydraulic loading rates (HLR) on pollutant removal efficiency of subsurface horizontal-flow constructed wetlands used for treatment of domestic wastewaters
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A study on the effects of different hydraulic loading rates (HLR) on pollutant removal efficiency of subsurface horizontal-flow constructed wetlands used for treatment of domestic wastewaters

机译：不同水力负荷率（HLR）对用于生活污水处理的地下水平流人工湿地污染物去除效率的影响研究

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The research into the treatment of domestic wastewaters originating from Bueyuekdoelluek village in Edirne Province was carried out over a 3 year experimental period. The wastewaters of the settlement were treated using a constructed wetland with subsurface horizontal flow, and the effects of different hydraulic loading levels on removal efficiency were studied. In order to achieve this goal, three equal chambers (ponds) of 300 m~2 each were constructed and planted with Phragmites australis. Each of the chambers was loaded with domestic wastewater with average flow discharge creating hydraulic loading rates of 0. m~3 day~(-1) m~(-2); 0.075 m~3 day~(-1) m~(-2) and 0.125 m~3 day~(-1) m~(-2), respectively. According to the results of the study, the inlet levels of the pollutant parameters with carbon origin in the water samples taken from the system entrance are high and the average values for three years are respectively: Biological Oxygen Demand, BOD_5 -324.5 mg L~(-1); Chemical Oxygen Demand, COD -484,0 mg L~(-1); suspended solids (TSS) -147.3 mg L~(-1) and Oil and Grease -0.123 mg L~(-1). It was also determined that the removal rates of the system were closely dependent on the applied hydraulic loading levels and the highest removal rates of 64.9%, 62.5%, 86.3% and 80.34% for BOD_5, COD, TSS and Oil and Grease, respectively, were determined in the pond with a hydraulic loading rate of 0.050 m~3 day~(-1) m~(-2). Lower removal of 57.9%, 55.5%, 81.4% and 74.5% for BOD_5, COD, TSS and Oil and Grease were recorded in the pond with a hydraulic loading rate of 0.075 m~3 day~(-1) m~(-2); and these values were 49.1%, 47.8%, 70.9% and 62.1% for the pond with a hydraulic loading rate of 0.125 m~3 day~(-1) m~(-2). High removal rates were also recorded for the other investigated pollution parameters.
机译：在为期3年的试验期内，对埃迪尔内省Bueyuekdoelluek村的生活污水进行了研究。利用人工湿地进行地下水平流处理定居区的废水，研究了不同水力负荷水平对去除效率的影响。为了实现这一目标，分别构建了三个相等的300 m〜2的小室（池塘），并种植了芦苇。每个腔室中装有生活污水，其平均流量为水，产生的水力负载率为0. m〜3天〜（-1）m〜（-2）； 0.075 m〜3天〜（-1）m〜（-2）和0.125 m〜3天〜（-1）m〜（-2）。根据研究结果，从系统入口处抽取的水样中含碳源的污染物参数的进口水平较高，三年的平均值分别为：生物需氧量，BOD_5 -324.5 mg L〜（ -1）;化学需氧量COD -484,0 mg L〜（-1）;悬浮固体（TSS）-147.3 mg L〜（-1）和油脂-0.123 mg L〜（-1）。还确定了系统的去除率与所施加的水力负荷水平密切相关，BOD_5，COD，TSS和油和油脂的最高去除率分别为64.9％，62.5％，86.3％和80.34％，在池塘中确定水力负荷率为0.050 m〜3天〜（-1）m〜（-2）。池塘中BOD_5，COD，TSS和油脂的去除率分别为57.9％，55.5％，81.4％和74.5％，水力负荷率为0.075 m〜3 day〜（-1）m〜（-2 ）;在水力负荷率为0.125 m〜3 day〜（-1）m〜（-2）的情况下，该数值分别为49.1％，47.8％，70.9％和62.1％。还记录了其他调查的污染参数的高去除率。

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