Journal of Tropical Oceanography ›› 2021, Vol. 40 ›› Issue (4): 134-142.doi: 10.11978/2020086CSTR: 32234.14.2020086

• Marine Environmental Protection • Previous Articles     Next Articles

Environmental capacity calculation and sewage treatment in Inner Zhanjiang Bay

SHI Yonghao1(), JIA Liangwen2(), ZHANG Heng1, LIN Yitong2   

  1. 1. Sun Yat-Sen University, School of Marine Science, Guangzhou 510275, China
    2. Sun Yat-Sen University, School of Marine Engineering and Technology, Zhuhai 519082, China
  • Received:2020-08-03 Revised:2020-12-29 Online:2021-07-10 Published:2021-01-12
  • Contact: JIA Liangwen E-mail:511203288@qq.com;jialwen@126.com
  • Supported by:
    National Key Research and Development Project(2016YFC0402603);Research on the Establishment of Sharing Mechanism and Scientific and Technological Innovation Development of Guangdong Marine Innovation Alliance(GDOE[2019]A54)

Abstract:

We add main pollutants as tracers to the two-dimensional hydrodynamic model of the TELEMAC-MASCARET numerical model system, and test algorithm to calculate the environmental capacity of Inner Zhanjiang Bay. Based on the environmental capacity calculation and sewage treatment survey, we propose some measures for land-based pollution control. In this paper, the environmental capacity of pollutants Chemical Oxygen Demand (COD), Dissolved Inorganic Nitrogen (DIN), Dissolved Inorganic Phosphorus (DIP), and petroleum in Inner Zhanjiang Bay in 2019 is calculated as 11721, 1388, 141, and 326 t·a-1, respectively. The total environmental capacity of the point source pollutant COD of the discharge outlet is 10426 t·a-1, DIN is 213 t·a-1, DIP is 70 t·a-1, and petroleum is 314 t·a-1. The discharge of water quality factors should be reduced correspondingly to the entrances and exits of Maquyao in Nantou Street, Xiaopoyao in Longtou Town, Guandu Park of Science and Technology Industrial Park in Potou District, and Potou Water Purification Plant of Zhanjiang City Sewage Treatment Co., Ltd. Meanwhile, we preliminarily propose some corresponding sewage treatment countermeasures: sewage treatment methods, pipe network construction, new sewage treatment plant, and sewage outlet deployment.

Key words: Inner Zhanjiang Bay, environmental capacity, test algorithm, sewage treatment

CLC Number: 

  • P761.4