Ji, Y. and Yin, Y., 2021. Water quality maintenance approaches and on-site monitoring results of an artificial bathing beach. Journal of Coastal Research, 37(4), 793–799. Coconut Creek (Florida), ISSN 0749-0208.

The construction of artificial beaches on the muddy coasts involves water purification and long-term maintenance. In the paper, based on the investigation of tidal current, sediment distribution, water quality, and background creatures, a technical scheme of “building submerged breakwater enclosure and accelerating sediment deposition” to form a transparent water body and a long-term water quality maintenance scheme of “diversion, drainage, and self-purification of ecology” are proposed. Through sand precipitation test, water exchange feasibility, and facility scale demonstration, biological purification measures research and on-site practice, as well as long-term water quality monitoring and analysis, the conclusions are as follows: (1) The construction of submerged breakwater for water enclosure promotes the sediment deposition process. The experiment results indicate that after two-day static settlement, 93% of the suspension is precipitated and the concentration of total phosphorus decreased by more than 70%. (2) Water from artificial beaches can be diverted by harnessing tide or pumping facilities. The scale of the pump station and sluice should be determined according to the filling or drainage capability of water in a tidal cycle. (3) The ecological self-purification should be established on the basis of background investigation. The aquatic animals, such as fish, shrimp, crab, shell, and algae m (4) The water quality tends to deteriorate and changes with seasons with the increase of tourists. Finally, it is suggested renovating the current water diversion system, enhancing the monitoring of ecosystem, limiting the number of tourists in summer and increasing the frequency of water exchange.