Most of our daily food contains starch, and the main raw material of starch production is some organic crops, so how to deal with the impurities and waste water after starch production?
Starch wastewater mainly comes from raw material treatment, soaking, crushing, screening, starch separation, washing and drying.Starch wastewater contains a lot of soluble organic pollutants, some inorganic compounds, and a certain amount of volatile acids and ash.
Most of the sewage produced by starch manufacturers need to go through the corresponding sewage treatment before discharge, commonly used agents are polyacrylamide, polyaluminum chloride and so on.
Cationic polyacrylamide (CPAM) is a linear polymer compound, because it has a variety of active groups, and many substances affinity, adsorption form hydrogen bonds. Mainly flocculating negatively charged colloid, with turbidity removal, decolorization, adsorption, adhesion and other functions, suitable for dyeing, papermaking, food, construction, metallurgy, mineral processing, coal powder, oil fields, aquatic products processing and fermentation industries organic colloid content is higher wastewater treatment, especially suitable for urban sewage, urban sludge, paper sludge and other industrial sludge dehydration treatment.
Polyacrylamide (PAM) is a linear polymer, chemical formula is (C3H5NO) N. It is a hard glassy solid at room temperature. The products are liquid glue, latex and white powder particles, translucent beads and flakes. Good thermal stability. Can be dissolved in water in any proportion, aqueous solution is uniform transparent liquid. After long-term storage, the solution viscosity will decrease due to slow degradation of polymer, especially when the storage conditions are poor.  Polyacrylamide, as lubricant, suspension agent, clay stabilizer, oil displacement agent, water loss reducer and thickener, has been widely used in drilling, acidification, fracturing, water plugging, cementing and secondary oil recovery, tertiary oil recovery. It is a very important oil field chemical.Learn more
Polyferric sulfate is a kind of inorganic polymer coagulant with superior performance. It is a light yellow amorphous powdery solid and easily soluble in water. 10% (mass) aqueous solution is red-brown transparent solution and hygroscopic. Polyferric sulfate is widely used in drinking water, industrial water, all kinds of industrial waste water, municipal sewage, sludge dewatering purification treatment.Learn more