A new integrated evaluation method of heavy metals pollution control during melting and sintering of MSWI fly ash.
Evaluations of technologies for heavy metal control mainly examine the residual and leaching rates of a single heavy metal, such that developed evaluation method have no coordination or uniqueness and are therefore unsuitable for hazard control effect evaluation. An overall pollution toxicity index (OPTI) was established in this paper, based on the developed index, an integrated evaluation method of heavy metal pollution control was established. Application of this method in the melting and sintering of fly ash revealed the following results: The integrated control efficiency of the melting process was higher in all instances than that of the sintering process. The lowest integrated control efficiency of melting was 56.2%, and the highest integrated control efficiency of sintering was 46.6%. Using the same technology, higher integrated control efficiency conditions were all achieved with lower temperatures and shorter times. This study demonstrated the unification and consistency of this method.
College of Energy and Environment, Shenyang Aerospace University, The Key Laboratory of Clean Energy in Liaoning Province, Shenyang, China. Electronic address: leerd@163.com.
Rundong
R
Li
College of Energy and Environment, Shenyang Aerospace University, The Key Laboratory of Clean Energy in Liaoning Province, Shenyang, China.
Yanlong
Y
Li
College of Energy and Environment, Shenyang Aerospace University, The Key Laboratory of Clean Energy in Liaoning Province, Shenyang, China.
Tianhua
T
Yang
College of Energy and Environment, Shenyang Aerospace University, The Key Laboratory of Clean Energy in Liaoning Province, Shenyang, China.
Lei
L
Wang
College of Energy and Environment, Shenyang Aerospace University, The Key Laboratory of Clean Energy in Liaoning Province, Shenyang, China.
Weiyun
W
Wang
D060729:Coal Ash / Q000032:analysis*; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis*; D004787:Environmental Pollution / Q000032:analysis*; D005615:Freezing; D019216:Metals, Heavy / Q000032:analysis*; D052638:Particulate Matter; D012037:Refuse Disposal; D012965:Sodium Chloride; D013696:Temperature
D060729:Coal Ash; D004785:Environmental Pollutants; D019216:Metals, Heavy; D052638:Particulate Matter; D012965:Sodium Chloride
Heavy metal; Integrated evaluation method; MSWI fly ash; Melting and sintering process; Overall pollution toxicity index