Valipour Alireza, Raman V Kalyan, Ghole V S
Water Research Institute, Shahid Abbaspour Blud, Tehran-16765313, Iran.
J Environ Sci Eng. 2011 Apr;53(2):183-90.
Safe, economic and effective treatment of domestic wastewater is the biggest challenge the world experienced in modern times. Phytoremediation studies were undertaken in a laboratory scale using shallow pond water hyacinth (Echhornia crassipes) system and analytical data was collected before and after treatment. The studies also include microbial flora present in the system by isolating and identifying the microorganisms. At optimum hydraulic retention time (HRT) of 21 h, approximately 81% chemical oxygen demand (COD), 91% biological oxygen demand (BOD5), 16% total dissolved solids (TDS), 70% total suspended solids (TSS), 4% Chlorides, 74% ammonia nitrogen (NH3-N), 41% phosphate (PO4-P), 96% most probable number (MPN) and 98% total viable count (TVC) reduction was achieved in shallow pond water hyacinth system. The shallow pond water hyacinth system shows better treatment efficiency compared to conventional water hyacinth system. The process indicates a possibility of development of a substantially effective shallow pond water hyacinth system for domestic wastewater treatment.
安全、经济且有效地处理生活污水是当今世界面临的最大挑战。利用浅塘凤眼莲（Echhornia crassipes）系统在实验室规模上开展了植物修复研究，并在处理前后收集了分析数据。这些研究还通过分离和鉴定微生物来研究系统中存在的微生物群落。在21小时的最佳水力停留时间（HRT）下，浅塘凤眼莲系统中化学需氧量（COD）降低了约81%，生化需氧量（BOD5）降低了91%，总溶解固体（TDS）降低了16%，总悬浮固体（TSS）降低了70%，氯化物降低了4%，氨氮（NH3-N）降低了74%，磷酸盐（PO4-P）降低了41%，最可能数（MPN）降低了96%，总活菌数（TVC）降低了98%。与传统凤眼莲系统相比，浅塘凤眼莲系统显示出更好的处理效率。该工艺表明开发一种用于生活污水处理的高效浅塘凤眼莲系统具有可能性。
