2. Drinking water treatment: The water source of many waterworks in China comes from rivers. The content of sediments and minerals is high and turbid. Although it is filtered by precipitation, it still can't meet the requirements, and flocculant needs to be added. In the past, inorganic flocculants were used in waterworks, but the dosage was large, which led to the increase of sludge and the effect was not good. Using anionic polyacrylamide as flocculant, the dosage is 1/50 of inorganic flocculant, but the effect is several times that of inorganic flocculant. Cationic polyacrylamide is best used in river water with serious organic pollution.
3. Oil displacement agent for tertiary oil recovery in oil field: it can adjust the rheology of injected water, increase the viscosity of driving fluid, improve the sweep efficiency of water flooding, reduce the permeability of formation water phase, and make water and oil flow forward at a uniform speed. Its role in oil exploitation is mainly used for tertiary oil recovery in oil fields. About 100- 150 tons of crude oil can be recovered for every ton of polymer polyacrylamide product injected.
Drilling mud material: used as an additive for drilling mud material in oil field exploration and development, geology, water conservancy and coal exploration, it can improve the service life of drill bit, improve drilling speed and progress, reduce blockage during drilling change, and has obvious effect on preventing well collapse. It can also be used as fracturing fluid in oil field and water plugging agent for profile control and water plugging.
4. Papermaking additives: Papermaking industry can be used as clarifier, retention aid, filter aid and paper wet and dry strength enhancer for caustic soda.
5. Used as sugar juice clarifier in sugar industry.
6. It can be used as additive and adhesive for aquatic feed.