Abstract
The research was aimed to choose the most appropriate aquatic plant in high capacity as grown in small wetland for community wastewater treatment, they were Typha angustifolia Linn., Cyperus corymbosus Rottb., and Canna indica Linn. The small wetland, sometimes called vertical flow constructed wetland (VFCW), has been designated on 100-m long, 5-m wide and 0.75-m deep in size in which four-hole pipes were laid down at the bottom for releasing some treated wastewater as effluent through the outlet to the storage reservoir. There must be paved the gravel on the bottom up to the level of 5-cm height and overtopping with sand about 15 cm that be followed by 30-cm mixed soil (soil: sand equivalent to 3:1). All selected aquatic plant species were planted in small wetland before flowing community wastewater until soil at saturated level for first week and about 30 cm during second week up to the maximum age of plants. The choosing aquatic plant species were only depended on the high efficiency of wastewater treatment. The most probable aquatic plant was selected on Typha as the first priority for high wastewater treatment efficiency, Canna the second, and more or less efficiency for the others. Fortunately, Typha has been grown well in everywhere, particularly flat wetland in central, west, east and down north of Thailand.
Highlights
Thailand had been facing the stream pollution since 1970
Accordance with constructed wetland was proposed to conduct the community wastewater treatment under the stagnated wastewater for 5 days releasing for 2 days before vertical flow through soil-sand-gravel layer
The three aquatic plants were selected for 9-small experimental plots which were vertical-flow constructed wetland (VFCW)
Summary
Thailand had been facing the stream pollution since 1970. H.M. the King Bhumibol has realized the worsen water pollution of the country and studied the possibility on how to recover with nature-by-nature process for longer period of time before starting-up. Wetland is occurred between the terrestrial and aquatic systems in order to absorb the toxic contaminants by humus, organic matters and soils before draining away to stream or river. Aquatic plants are main component of a constructed wetland system. They play important roles in degrading and removing nutrients and other pollutants (Cui et al, 2010).
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call