Abstract
With the research purpose of protection of water environmental quality in Dachan Bay Area in Shenzhen City, especially in National Development Zone in Qianhai Area, this paper establishes a horizontal two-dimensional water quality model of Dachan Bay and its branches by the use of WQ Module of Delft 3D. And this paper respectively simulates distribution of water quality in full high flow year, normal flow year and low flow year before and after the implementation of protection measures, predicts the effect of the water environment protection measures and focuses on the analysis of two kinds of hydrodynamic force enhancement pat-terns, that is, “water replenishing in dead zones” and “pollution discharge at back doors”, and finally recommends water environment protection measures with the core of “pollution discharge at back gates” by taking full advantage of natural dynamic, thus obtaining a better effect than that of the traditional “water replenishing in dead zones”.
Highlights
Dachan Bay is an important part of the east coast of Lingdingyang Bay.tuary, to the south of Shenzhen Airport and to the north of Shenzhen Mawan Port Area
The water quality is very poor in Dachan Bay Area and its tributaries [4]
(4) Deposit is severe in Dachan Bay Area, seriously affecting the water quality
Summary
Dachan Bay is an important part of the east coast of Lingdingyang Bay. tuary, to the south of Shenzhen Airport and to the north of Shenzhen Mawan Port Area. The east side and north side of Dachan Bay Area are close to the downtown of Bao’an District; the west side of it is a newly-developed port area which is a reclamation filled and formed by Dachan Island and Xiaochan Island; the southeast side of it is close to the downtown area of Nanshan District, where Qianhai Area exactly located at (as shown in the blue part of Figure 1). On August 26, 2010, the State Council approved to build Qianhai Area as an “Innovation Cooperation Demonstration Zone in Modern Service Industry of Hong Kong–Guangdong”. The water system of the basin area at Dachan Bay is shown in Figure 1 [2]. It’s located at the bay mouth which lies to the southeast of Fanshi Waterway of the Pearl River Es-
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