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Insights to bioprocess and treatment competence of urban wetlands
Journal of Environmental Management ( IF 8.0 ) Pub Date : 2017-11-26 , DOI: 10.1016/j.jenvman.2017.10.054
Durga Madhab Mahapatra , N.V. Joshi , T.V. Ramachandra

Wetlands play a major role in the recharge of groundwater resources, maintenance of water quality (remediation), moderate microclimate while supporting local livelihood through provision of fish, fodder, etc. The present study aims to investigate algal-bacterial consortium as a function of residence time with the water quality dynamics in two major wetlands in Bangalore city, India. Over thirty-two genera of algae were recorded with more than 40 species in the lakes and two dominant bacterial assemblages. The higher Ammonium-N content favoured the growth of these members. Significant correlation was observed between the nutrient concentrations and the community structure at the inflows and the outflows. The algal community showed negative correlation to filterable COD and high nutrients levels while bacterial abundance was observed under high loadings. The green algae Chlorophyceae (Chlorella blooms), which are indicators of nutrient enrichment were observed predominantly, that needs an immediate attention. Higher overall treatment efficiency was observed in terms of CNP removal during the Pre-monsoon season attributed to absence of macrophytes cover and rapid growth of algal assemblage's due to higher temperature regimes with adequate solar insolation.



中文翻译:

对城市湿地生物加工和处理能力的见解

湿地在补给地下水,维持水质(修复),适度的小气候方面发挥主要作用,同时通过提供鱼类,饲料等来支持当地的生计。印度班加罗尔两个主要湿地的水质动态变化的时间。记录了超过32个藻类的湖泊,其中有40多个物种和两个主要的细菌群落。较高的铵态氮含量有利于这些成员的生长。在流入和流出的养分浓度和群落结构之间观察到显着的相关性。藻类群落与可过滤的COD和高养分含量呈负相关,而在高负荷下观察到细菌丰度。绿藻藻科(主要观察到小球藻开花,这是营养富集的指标,需要立即引起注意。在季风前季节,由于没有大型植物覆盖和由于高温条件下充足的日照导致藻类组合快速生长,因此在CNP去除方面观察到较高的整体处理效率。

更新日期:2017-12-14
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