Abstract
Land-based source of pollution is one of the main causes of pollution in the Bohai sea coastal waters, and drainage channel is the main contributor of Land-based source of pollution. Based on principal component analysis method for analysis of single factor evaluation method, selection principles for putting Tianjin Dagu river sewage pollution source location and determined the sample point, research history data and field monitoring of sewage and poisonous and harmful substances, determine a list of priority control pollutants and point pollution sources; Some corresponding land-based source of pollution control method and pollution prevention and control strategies was put forward in the paper.
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