Synergistic Effects of High Rate Algal Pond and Submerged Macrophyte Pond on Constructed Wetland for Water Purification
Yi Ding 1,2
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College of Ocean Science and Engineering, Center for Marine Environmental and Ecological Modelling, Shanghai Maritime University, Shanghai 201306, China
College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
Submission date: 2020-08-03
Final revision date: 2021-02-26
Acceptance date: 2021-03-08
Online publication date: 2021-08-30
Publication date: 2021-09-22
Corresponding author
Xinshan Song   

Donghua University, 201620, Shanghai, China
Pol. J. Environ. Stud. 2021;30(5):4887-4893
This study was to assess the synergistic effects of high rate algal pond (HRAP) and submerged macrophyte pond (SMP) on constructed wetland (CW) for water purification. The results showed that algae debris and algae-macrophyte photosynthesis could promote the carbon and oxygen level while surplus algae were effectively inhibited by Vallisneria natans, thus facilitating nitrificationdenitrification and organic degradation of subsequent CW in HRAP-SMP-CW hybrid system. Water purification performance in hybrid system was significantly better than that in single HRAP, SMP and CW reactor. The extension of hydraulic retention time in hybrid system was conducive to higher-quality effluent. 89.4±2.5% algae biomass, 93.2±1.4% NH4-N, 90.0±1.4% TN, 99.9±0.1% TP and 92.4±2.0% COD could be reduced in hybrid system under 5d-HRT. The study demonstrated that the novel integration of pond-wetland hybrid system could be a cost-effective wastewater treatment technology.
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