胶粉沥青混凝土铺路材料对周围水环境的影响

Environmental Impact of Crum Rubber Asphalt Concrete Paving Materials on Water Around Road

橡胶粉沥青混泥土 (CR -CA)沥出液是一种含有苯噻唑、2 羟基苯噻唑和 2 (4 )吗啉代苯噻唑等有机物化合物和汞、铝等金属杂质的混合物。试验结果表明 ,CR -CA沥出液对海藻呈现中度到高度毒性 ,而对水蚤呈中度毒性。但经土壤吸收、挥发、生物降解、光降解等环保方法处理后 ,CR -AC沥出液其对水生生物的毒性可全部或部分去除 ,从而阻止它们对公路周围水环境的破坏。

Crumb rubber asphalt concrete (CR-AC) leachates contain the organic mixture and metallic contaminants,such as, benzothiazole ,2-hydroxybenthiazoles and 2-(4-morpholino) benthiazole, mercury, aluminum . Toxicity test indicated that CR-AC leachate exhibited moderate to high toxici for algae and moderate toxicity for water fleas. Toxicity for aquatic life were totally or partly removed by the environmental process of soil sorption, volatilization and biodegradation and photolysis. Therefore the damage of CR-AC leathete to water condition were retarded .