Environmental Engineering Reference
In-Depth Information
Comparison of Heavy Metal Pollution in Water Ecosystems among
Industrial Districts
Water bodies in all industrial districts were polluted severely. Nevertheless, the degree of
pollution among 7 industrial district are different which may because of distinct industrial
types developed in these regions, for example, Dongbei developed with heavy industry is an
old industrial district in China, which results in serious heavy metals pollution in water
ecosystems, while Huadong is distributed with textile and light industry, which may lead to
less heavy metal pollution in the water ecosystems. Because the most serious polluted water
ecosystems are different among industry districts, remediation of pollution in sea is most
important in Donbei industrial district. Management of pollution in rivers is most crucial in
Huabei, Huannan and Xibei industrial districts, while remediation of pollution in lakes is
urgent in Huadong and Huazhong industrial districts.
C
ONCLUSION
In summary, the assessment of sediment contamination by heavy metals (As, Cd, Cr, Cu,
Hg, Pb, Zn) in water bodies of China with collection data indicates that the pollution of heavy
metals in water bodies is heavily. The sequence of potential ecological risk posed by the
metals was Cd>Hg>As> Cu>Pb>Cr>Zn; the heavy metals pollution sequence of industrial
districts was Dongbei>Huabei>Huazhong>Huanan>Huaxi>Xibei>Huadong; and the heavy
metals pollution sequence of water ecosystems were River>Sea>Lake >Wetland. Therefore,
China is facing many challenges to control heavy metal pollution, and we suggest that the
remediation of heavy metals pollution should be taken account of industrial district types,
water body types and major heavy metals.
A
CKNOWLEDGMENTS
This research is funded jointly by One Hundred-Talent Plan of Chinese Academy of
Sciences (CAS), the CAS/SAFEA International Partnership Program for Creative Research
Teams, the Science & Technology Development Plan of Shandong Province
(2010GSF10208), the Science & Technology Development Plan of Yantai City (20102450),
the Important Direction Project of CAS (KZCX2-YW-JC203) and CAS Young Scientists
Fellowship (2009Y2B211).
A
PPENDICES
Table S1. Provinces of industrial districts in China
Industrial Districts
Provinces
Dongbei
Heilongjiang, Liaoning, Jilin, Eastern of Neimenggu (Hulun Buir City,
Xingan meng, Tongliao City, Chifeng City)
