污染底泥掩蔽材料筛选综述

随着经济的高速发展,水体底泥污染已成为世界性的一个环境问题。掩蔽修复是一种修复效果明显,且工程造价较低的水体底泥修复技术,而掩蔽技术的关键在于掩蔽材料的选择。本文主要介绍了水泥、粉煤灰、沸石、方解石、铝盐等研究较为成熟的且具有应用前景的掩蔽材料,分析其各自的原理及优缺点。同时作者在文章中提出了一种新的掩蔽剂——净水厂改性污泥,对其的可行性进行了分析。并就掩蔽材料的选择的技术要求以及原则作出分析。

Summary of Capping Material Selection for Sediment Pollution

With the rapid economic development, water sediment pollution has become a worldwide environmental problem. Capping is an effective and cheap remediation technology, of which the key point is selection of the capping materials. This paper introduces some perfect and application promising capping materials such as cement, fly ash, zeolite, calcite, aluminum salts etc. Their radiation mechanism, advantages and disadvantages are analyzed. Meanwhile a new capping material, the modified sludge from water treatment plant is recommended and its feasibility is analyzed. The technical requirements and principles for selection of capping materials are analyzed as well.