ABSTRACT
Therefore, co-processing contaminated soil in cement kilns is regarded as the promising substitute for the existing technologies due to its remarkable economic and environmental merits. The co-processing technology is very attractive to some projects which need to remedy a large scale of severely polluted soil in a limited time. Especially the soil was polluted by Persistent Organic Pollutants (POPs), the co-processing method even can achieve a destruction and removal efficiency higher than 99.9999%. The Basel Convention (2007) technical guidelines consider some technologies to be suitable for environmentally sound destruction of POPs. The most common methods among these are hazardous waste incinerator and cement kiln, which can offer a larger disposal capacity (Karstensen et al. 2006). The remaining technologies have comparatively low capacities, and are technically sophisticated and currently cannot be afforded by many developing countries (UNEP 2004). The cement kiln is a thermal treatment
1 INTRODUCTION
In recent years, remediation of contaminated soil has become an urgent task related to human health and safety in China. On April 17th, 2014, the two ministries of China, Ministry of Environmental Protection (MEP) and Ministry of Land and Resources (MLR) announced the report on national general survey on soil contamination. The involved survey area is around 6,300,000 km2. Up to 16.1% of the total survey sites fail to attain soil environment quality standards.
