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=== Pre-treatment === | === Pre-treatment === | ||
"Most commercial flocculants are synthetic water soluble polymers with average molecular weights in the region 1000 to 30 × | "Most commercial flocculants are synthetic water soluble polymers with average molecular weights in the region 1000 to 30 × 10^6. They are generally supplied as powders that have a limited storage life, particularly when made up into solution."<ref>{{Cite book|author=E. S. Tarleton, R.J. Wakeman|year=2007|section_title=3 – Pretreatment of suspensions|book_title=Solid/liquid separation : equipment selection and process design|publisher=Butterworth-Heinemann|place=Oxford|ISBN=9781856174213}}</ref> | ||
==Process and technologies== | ==Process and technologies== |