Abstract
Abstract To purify small-scale stagnant water, an on-site ecological system with human-powered water lift and bank-based constructed wetland was built, and bank-based constructed wetland was consisted of two absorption substrates of clinker and volcanic ash, and yellow iris (Iris pseudacorus L.). During the experiment period for 90 days, the system can effectively circulate stagnant water, increase dissolved oxygen (DO) by more than 45%, and decrease chemical oxygen demand (COD) by 20–45%, but it showed lower nitrogen and phosphorus removal rate in water (
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