Biopharmaceutical industry is a large pollutant, the discharge of waste water not only high concentration of organic pollutants, but also contains a variety of factors to inhibit microbial growth, the use of general wastewater treatment technology can achieve good treatment results. Biopharmaceutical industry is based on food as raw material, fermentation and culture of specific medicinal microorganisms, fermentation broth after filtration through the chemical method can be extracted. In the pharmaceutical process there are two main types of waste water: fermentation wastewater and wastewater extraction. Fermentation wastewater mixed with fermentation residues and microbial bacteria, suspended solids content of high, for some microbial have a strong inhibitory effect. Adding coagulants can precipitate the suspended matter, the liquid on the inhibition of microbial significantly reduced. Extraction of waste water is the filtrate after chemical treatment of chemical ingredients.
In the case of polyacrylamide flocculants in the treatment of pharmaceutical wastewater, the cationic polyacrylamide product is generally selected if it is biochemical sludge treatment. If the organic concentration is high, even cationic polyacrylamide Ion degree of 60 or more the best results, if it is electrolytic treatment or the previous paragraph air handling situation. According to the water quality of the sewage, the most critical technical indicators are to see the size of the PH value to determine the choice of cationic polyacrylamide flocculant, the general principle of PH less than 7, then often use non-ionic polyacrylamide as coagulant or sludge Concentrated sinks.
Starch. If PH is 7 or more, the most commonly used is anionic polyacrylamide.