Different Adsorbent to Remove Polymeric Aluminum Chloride in Cr (VI) Comparative Study

Polymeric Aluminum Chloride (PAC) is the most commonly used wastewater treatment of flocculant, with PAC sewage will PAC itself with the heavy metal ion (Cd2+, Hg2+, Cu2+, Cd6+ etc.) is introduced into the water cause secondary pollution. The adsorption method to remove one of the Cr (VI). The first was determined by spectrophotometry PAC in Cr (VI) content,then the coal ash, PVA entrapping activated carbon microsphere and activated carbon powder three adsorbent, under the same conditions were removed PAC of Cr (VI). The results have shown that the activated carbon had the highest effect on treatment of waste water of Cr(VI). But the carbon price is quite high. After the removal of trace Cr (VI), choose activated carbon as adsorbent. After the removal of a large number of Cr (VI), choose coal ash as adsorbent.