Optimization of sprayed lime amount in the semi-dry scrubbing system of MSWI.
This paper reports the characterization of residues collected from air pollution controlling devices (APCDs) at seven large-scale municipal solid wastes (MSW) incineration plants. The amount of lime being sprayed in plants is a function of free CaO content in scrubber residues; a higher free CaO content in scrubber residue causes more leaching of lead. The proper amount of lime in the semi-dry scrubbing system was found to be 5 kg/ton of MSW waste. Under these conditions, both the free CaO content and lead leaching became extremely low in scrubber residue.
Huang
Wu-Jang
WJ
National Ping-Tun University of Science and Technology, Department of Environmental Science and Engineering, 91201 Ping-Tun, Taiwan. wjhuang@mail.npust.edu.tw
D000397:Air Pollution / Q000517:prevention & control*; D017610:Calcium Compounds / Q000032:analysis / Q000737:chemistry; D004350:Drug Residues / Q000032:analysis / Q000737:chemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D017745:Incineration / Q000295:instrumentation / Q000379:methods*; D010087:Oxides / Q000032:analysis / Q000737:chemistry; D012037:Refuse Disposal / Q000295:instrumentation / Q000379:methods / Q000592:standards*; D013624:Taiwan; D014505:Urban Population; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D017610:Calcium Compounds; D010087:Oxides; D014874:Water Pollutants, Chemical; C016538:lime