rocketballz
Civil/Environmental
I understand that "alum" liquid 8% implies aluminium sulphate content 8% w/w. If this is correct and a small batch sewage treatment system utilizes 400 mL of alum to a 500 L source of sewage wastewater for initiation of flock, then what is the best way to quantify or describe this in discussion with colleagues. If I want to assess treatment of another source of waste water, say from an electroplating plant or other industrial source using a multi-chemical process of coagulation and flocculation, and choose to use "alum 8%" as an initial coagulant choice, how does one predict the likely dose range requirement for jar testing. Do you just set up an organized trial and go into it blindly, how would you win that $20 bet with a colleague as to the likely requirement. With experience, is there analytic parameters that top end engineers can look at like TSS, or TDS or the like. I do understand that there is a role for looking at streaming conductivity but this is quite expensive.
