Polyacrylamide can also play a role in wastewater treatment of restaurant industry. But there are some tips when using polyacrylamide for restaurant wastewater.

The typical characteristic of restaurant wastewater is high oil content, so in the treatment of restaurant wastewater, there is an important link is oil removal. Due to the poor effect of polyacrylamide on oil, a large amount of oil will seriously affect the effect of polyacrylamide. Therefore, before adding polyacrylamide, we suggest that calcium hydroxide or sodium hydroxide be used to saponify with oil to reduce most of the oil, and then polyacrylamide can be used to remove it easily. Secondly, when using polyacrylamide to treat restaurant wastewater, the amount of agent added has a great influence on the precipitation effect. The experimental observation shows that increasing the amount of polyacrylamide can obviously speed up the precipitation rate. Due to the strong adsorption bridging effect of polyacrylamide, the structure of flocculant is improved. If polyacrylamide is combined with inorganic flocculant, the use effect will be better.

The reason why polyacrylamide is widely used in restaurant wastewater is related to its treatment effect, treatment speed and treatment cost. The application effect and operation method of flocculation sedimentation method will not change even in the low temperature, cold, hot and humid places, so the adaptability is very strong. Less investment is also the main reason adopted by many restaurant enterprises.

When adding polyacrylamide, we must pay attention to the acceleration, because the polyacrylamide will immediately swell and absorb water after contacting with water. If the dosage is too much at one time, it is easy to agglomerate and form the so-called "fish eye" shaped floc, which is not only difficult to dissolve, but also causes the blockage of the dosing pump.

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