Starting from 3 a.m. April 11, Lanzhou Veolia has put activated carbon into the company's sedimentation tanks to absorb organic material in an effort to dissolve the benzene. 
Kuanzia saa 9 usiku, Aprili 19, Lanzhou Veolia imeshaweka kemikali ya kaboni kwenye mapipa ya kampuni kwa lengo la kufyonza dutu za kioganiki kama namna ya kuyeyusha benzini iliyo kwenye maji hayo.