污染水体底泥治理技术研究进展

水体底泥污染,是世界范围内的一个环境问题,污染物通过大气沉降、废水排放、雨水淋溶与冲刷进入水体,最后沉积到底泥中并逐渐富集,底泥中主要的污染物有重金属、营养元素、难降解有机物.目前底泥的治理方法有原位修复和异位处置,原位修复主要有掩蔽技术、淋洗技术;异位处置主要有卫生填埋、堆肥法、干式热处理;生物修复技术是既可用于原位修复又可用于异位处置的一种方法,具有投资少、见效快且没有二次污染的优点,是一种具有广阔应用前景的技术.

Research on Disposition Techniques for Polluted Sediment of Water Body

The sediment pollution exists all over the world. The contamination enter the water body through the atmosphere depositing, the waste water exhausting, the rain flushing. The end sediment deposited into the water bottom and sequentially gathered. The main pollutants in sediufent have heavy metals, nourishment element, difficultly decomposing organic matter. At present, the treatment methods of the sediment have the home position repair and different position treatment. The home position repair mainly included covered up technique and washed technique. The different position treatment mainly has hygiene filling, piling up fertilizer method, different position treatment. It not only little need investment and take effect quickly but also have hot processing, The biology repair technique can be used for the home position repair and no twice polluting. It takes on infinite potential in the future.