| abstract |
The present invention relates to a wastewater treatment device for preparing tea polyphenols and its treatment process. The device includes a supercritical extraction device, a solvent extraction device, a ceramic membrane separator I, a middle tank, an anaerobic reactor, an aerobic reaction tank, and a ceramic membrane separation device. Device Ⅱ, tea residue processor. The invention adopts supercritical extraction and solvent extraction to jointly extract tea polyphenols to improve product purity. The extraction of tea polyphenols has the advantages of low energy consumption, high extraction rate, and high product purity; for the treatment of tea extraction wastewater, the water quality of the effluent is colorless, clear and tasteless. The process can efficiently and rapidly treat the waste water in the process of tea processing. |