Metabolic Pathways. 1  Although we can recognize a substrate and product. of individual enzymatic reactions metabolic. 2  Pathways can be linear, branched, cyclic or even. spiral. 3  Pathway activity is controlled in three ways.  Metabolites and enzymes may be localized in. different parts of the cell called metabolic.
Products often purchased by wastewater treatment plants include: 1  Alum or aluminum sulfate. 2  Sodium aluminate. 3  Polyaluminum Chloride.  Polymer 1  (dewatering) Sodium hydroxide.  Ferric 1  Chloride. Ferrous Chloride.
8 Chemicals from water treatment and. distribution. 8.1 Introduction. Chemicals from water treatment and distribution reach drinking-water by the most direct. route. They fall into three broad categories: â¢ substances resulting from the addition of chemicals used in the treatment process for. coagulation and disinfection â these chemicals are intentionally added and can give rise.