Sulfate-reducing bacteria and macrophytes play an essential role in sulfate degradation in constructed wetlands. This study provides an evaluation of sulfate removal in a hydropond planted with B. pilosa. Two hydroponds, the experimental (planted with B. pilosa) and reference sections (unplanted) were tested for their ability to remove sulfate from industrial wastewater. Wastewater containing the concentrations of sulfate (mean = 705 mg/l) was run in both systems. The samples were collected at 24 h' intervals and were analysed for pH, dissolved oxygen, temperature, chemical oxygen demand (COD) and sulfate. After 288 h, the final concentration of sulfate was 169 mg/l (mean value), representing 76% removal in the planted section and was 309 mg/l (mean value), representing 56% in the reference section. The removal in the planted section was found to be within the acceptable limits (<250 mg/l) as per the South Africa's Department of Water and Sanitation. Temperature had a moderate negative correlation on sulfate removal in both the planted (r = −0.38) and reference sections (r = - 0.42). COD also had a very strong negative correlation in both sections (r = −0.97 in the reference and - 0.94 in the plated). The dissolved oxygen indicated a weak positive correlation in both sections (r = 0.29 in the planted and 0.37 in the reference), while the pH had a strong positive correlation on both the sections (r = 0.79 in the reference and 0.80 in the planted section). More sulfate removals by macrophytes were due to conducive temperatures and microbial activities in the system created by macrophytes. Based on the findings, the hydropond planted with B. pilosa has a potential to remove sulfate from wastewater, thus could be used as an alternative technology of sulfate removal from sulfate contaminated wastewater.

减少硫酸盐的细菌和大型植物在人工湿地中的硫酸盐降解中起重要作用。这项研究提供了一个评估种植的毛孢藻的水塘中硫酸盐去除的评价。两个水塘，实验性的（栽种有B. pilosa）和参考部分（未植入）进行了测试，以从工业废水中去除硫酸盐。在两个系统中均运行了含硫酸盐浓度（平均值= 705 mg / l）的废水。每隔24小时收集一次样品，并分析其pH值，溶解氧，温度，化学需氧量（COD）和硫酸盐。288小时后，硫酸盐的最终浓度为169 mg / l（平均值），在种植区中占76％的去除率，为309 mg / l（平均值），在参考区中占56％。根据南非水与卫生局的调查，发现种植区域的去除量在可接受的范围内（<250 mg / l）。温度对两种作物的硫酸盐去除有中等程度的负相关（r = -0.38）和参考截面（r  =-0.42）。COD在两个部分中也都具有非常强的负相关性（ 参考中r = -0.97，镀层中r =-0.94）。溶解氧在两个切片中都显示出弱的正相关性（r  = 0.29在种植区中，参考值为0.37），而pH在两个切片中都具有强的正相关性（r  =在参考区中0.79，在种植区中为0.80） ）。大型植物对硫酸盐的去除更多是由于大型植物在系统中产生的有益温度和微生物活性所致。根据这些发现，种植了披毛双歧杆菌的水塘。 具有从废水中去除硫酸盐的潜力，因此可以用作从受硫酸盐污染的废水中去除硫酸盐的替代技术。