Hebei Province Hengshui City recently conducted a sudden environmental pollution incidents emergency drill. During the drill, a dangerous chemical tanker had a accident, then it was caused the valve to be damaged, and the leaking dangerous chemicals benzene flowed downstream along the drainage channel, endangering the water quality and ecological safety of the Hengshui Lake Nature Reserve. In response to the unexpected situation, all relevant departments of Hengshui City cooperated closely and cooperated with each other to construct the intercepting dam and using chemical absorbent pads and chemical absorbent booms for cleaning the chemicals and other measures to timely control the development of the situation.