The water quality of the pharmaceutical factory is very complicated. The sewage contains some toxic and harmful organic substances which are difficult to explain. If discharged directly, it will affect the environment. Water quality should be set up to adjust the water quality and pH, and then choose cationic polyacrylamide for water sludge dehydration, reduce the SS, salinity and part of COD in the water, reduce the biological pressing substances in the wastewater, improve the biodegradability of the wastewater, to facilitate the subsequent biochemical treatment of wastewater.
Pharmaceutical factory process:
① Electrolysis + hydrolytic acidification +CASS process
② Microelectrolysis + anaerobic hydrolytic acidification +SBR
③UASB+ faculoxy + contact oxidation + air flotation process
(4) Microelectrolysis +UBF+CASS
These types of treatment processes, air flotation needs to use cationic polyacrylamide, precipitant, etc.
Biopharmaceutical wastewater is characterized by high concentration of organic matter, COD,BOD value fluctuation, wastewater BOD/COD value difference, high concentration, deep chroma, high ss. Chemical pharmaceutical wastewater is characterized by high COD, high salt content and large PH change, the single composition in the wastewater is not conducive to the growth of microorganisms, containing toxic and not easy to degrade substances. Because the composition of pharmaceutical wastewater is too complex, its treatment methods are many, in the case of contact or to do more small tests to determine whether cationic polyacrylamide can be used.
