Environmental Quality Assessment of Qinhuangdao Bathing Beach

Abstract

In this study, the change trends of fecal coliforms and dissolved oxygen in water quality samples, collected from the six monitoring stations of the four bathing beaches from 2015 to 2018 in Qinhuangdao, were analyzed, combining the Sea Water Quality Standard and Beach Rules for the Classification of Swimming Suitability in Bathing Beaches, thus giving analysis and evaluation of the water quality of the four baths. The results are as follows: fecal coliforms are the main pollutants of bathing beaches. Changes in the concentration of fecal coliforms are mainly affected by rainfall, number of tourists, temperature and land-based pollutants. Especially after heavy rainfall, the concentration of fecal coliforms increased significantly. The dissolved oxygen content of the bathing beach had little change, and the annual average value satisfied the second-class water quality standards, which is mainly affected by factors such as sea surface temperature and plankton. The peaks mostly occurred in September and October. The water quality in Nandaihe Bathing Beach is the best of the four beaches in Qinhuangdao, followed by Dongshan Bathing Beach and Beidaihe Bathing Beach, and West Bathing Beach is the worst.

Keywords

• qinhuangdao
• bathing beach
• water quality
• fecal coliform
• dissolved oxygen