The reduction process of petroleum content in marine oil spill in Jiaozhou Bay

Dongfang Yang,Qi Wang,Haixia Li,Yuan Zhang,Lin Ding

doi:10.1051/e3sconf/202125203013

Abstract

According to the survey data about the waters of Jiaozhou Bay in May, September, and October 1993, this paper studies the content of PHC and its horizontal distribution in the surface waters of Jiaozhou Bay. The result shows that the range of PHC content in the waters of Jiaozhou bay is 4.16–51.00μg/L, which conforms to the national first, second and third water quality standards. In terms of PHC content, the water quality of Jiaozhou Bay is slightly polluted by PHC content in May, September and October. In May, the range of PHC content in the water of Jiaozhou Bay is 4.16–51.00μg/L, which is slightly polluted by PHC content. In the center of east waters, the water quality is slightly polluted by PHC content and the range of PHC content in other water fields of Jiaozhou Bay is 4.16–48.40μg/L which indicates that the water quality is not polluted by PHC content. In September, the range of PHC content in the waters of Jiaozhou Bay is 6.17–12.70μg/L, which is not polluted by PHC content. In October, the range of PHC content is 11.40–11.80μg/L, indicating that the waters of Jiaozhou Bay are not polluted by PHC. The content of PHC in the waters of Jiaozhou Bay only has one source, the transportation of marine oil spill, and the PHC content transported is 12.70–51.00μg/L. Therefore, as time changes, the ocean polluted by PHC content resulting from marine oil spill has gradually reduced over the course of the year. The marine oil spill has caused the waters in May to be slightly polluted by the PHC content. By September, the waters are not polluted by the PHC content. And then, in October, the marine oil spill has disappeared.

Highlights

On the eastern coast of Jiaozhou Bay, a terminal oil storage base has been established
At station H3107 in the eastern central water area, the PHC content is 51.00μg/L, which indicates that the water quality of this water area meets the water quality standards of Class III in terms of PHC content, and the PHC content is greater than 0.050μg/L, so the water quality is slightly polluted by PHC
5 Conclusion In May, September and October, the content of PHC in the waters of Jiaozhou Bay ranges in 4.16-51.00 μg/L, which conforms to the national seawater quality standards of Class I, II and III

Summary

Introduction

On the eastern coast of Jiaozhou Bay, a terminal oil storage base has been established. There have been many oil tankers going to and from Jiaozhou Bay, resulting in the occurrence of marine oil spills. The marine oil spill transports the PHC content to the bay waters [1-11]. Its geographical position is between 120°04′-120°23′E and 35°58′-36°18′N. It is bounded by the line connecting Tuan Island and Xuejia Island, and is connected to the Yellow Sea. With about 446km[2] in the area and about 7 m in the average water depth, it is a typical semi-enclosed bay. There are more than a dozen rivers entering the sea in Jiaozhou Bay, among which the Dagu River, Yang River and the Haibo River, Licun River and Loushan River in Qingdao City with larger runoff and sand content [12, 13]

Methods

Results

Discussion

Conclusion