Wastewater Treatment method for Dental Floss Manufacturing Site

Is there a special method for  treating wastewater from the dental floss manufacturing site? We are experiencing high fluctuation in BOD in the wastewater generated at our manufacturing site. Please tell me the best water treatment method when biochemical oxygen demand (BOD) fluctuates from 1,000 ppm to 10,000 ppm? The amount of wastewater generated per day is just 600 l.   Other parameter fluctuations we observed were:  COD - 800 ppm to 2200 ppm Oil and Grease -  4ppm to 150 ppm TSS - 55ppm to 6000 ppm Fluoride - 7ppm to 300 ppm Phenol - 0.05ppm to 0.1 ppm Thanks!