کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4389474 1305129 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of the hydraulic loading rate on pollutants removal in tropical horizontal subsurface flow constructed wetlands
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Impact of the hydraulic loading rate on pollutants removal in tropical horizontal subsurface flow constructed wetlands
چکیده انگلیسی

This study assessed the pollutant removal potential of horizontal subsurface flow (HSSF) constructed wetland systems under tropical conditions subjected to various hydraulic loading rates (HLRs). Three HSSF wetland units, each 1.4 m × 0.5 m × 0.6 m (length × width × height) in size, filled with 10–20 mm gravel as bed media, were used. Two beds were planted with a local emergent macrophyte; narrow-leaf cattail (Typha angustifolia), while the remaining served as a control without plants. All units were tested with synthetic wastewater mixed with septage sludge at different hydraulic loading rates (2.5–30 cm/day) over a period of six months. Results show that the planted HSSF wetland units removed pollutants substantially up to 25 cm/day HLR. Removal efficiencies at planted wetlands were over 80%, 44%, 96.5% and 96.1%, in comparison to unplanted wetland removals of 70%, 38%, 95.1% and 94.5% for five day biochemical oxygen demand (BOD5), total suspended solids (TSS), fecal coliform (FC) and total coliform (TC), respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Engineering - Volume 61, Part A, December 2013, Pages 154–160
نویسندگان
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