LUO Meng, SONG Yudong, ZHENG Shengzhi, et al. Effect of latex concentration in ABS resin wastewater on demulsification[J]. CIESC Journal, 2016, (11): 4837-4842.
LUO Meng, SONG Yudong, ZHENG Shengzhi, et al. Effect of latex concentration in ABS resin wastewater on demulsification[J]. CIESC Journal, 2016, (11): 4837-4842.DOI: 10.11949/j.issn.0438-1157.20160649.
The effect of latex concentration in ABS resin emulsion graft section wastewater on demulsification efficiency was investigated with PAC as demulsifier. The results indicated that there were optimized ranges of reagent dosage in different latex concentrations
as the undersize or oversize dosages could all lead to poor demulsification efficiency. When the latex COD concentration decreased from 13012 mg·L-1 to 192 mg·L-1
the optimized ranges of reagent dosage moved right
increasing from 6.1-10.8 mg·g-1 to 7.7-13.8 mg·g-1. The optimum COD removal efficiencies dropped from 99.30% to 91.24%. The optimum reagent dosages per latex COD unit increased by about 40%. The demulsification mechanism of latex wastewater by PAC was mainly adsorption-charge neutralization. With increase of PAC dosage
the colloid Zeta potential increased
and the latex could realize demulsification effectively in the range of -23-13 mV.