FLOCCULATION-BIOENZYMATIC TREATMENT OF LIVESTOCK AND POULTRY AQUACULTURE WASTEWATER

摘要

With the increase in demand for livestock and poultry products, the discharge of a large amount of livestock and poultry aquaculture wastewater will not only affect human health, but also pollute farmland and groundwater. The flocculation-bioenzyme method was used to treat a certain dairy farm wastewater. In the 250 mL water sample, 0.80 mL PAC and 0.30 mL PAM were added in tiim. The wastewater was first agitated for 1 minute with 350 r/m and then slowly agitated for 30 seconds with 100 r/m stirrer. After standing for 20 minutes, the removal rate of COD and SS was 85.1% and 94.5% respectively. Then adding 3 mL bio-enzymes could significantly increase the DO concentration of wastewater, adjust the pH of wastewater to near neutrality, and improve the biochemical performance of wastewater.