Abstract: Using enzyme to pre-treat with excess sludge can accelerate anaerobic digestion.α-Amylase,subtilisin,neutral protease,and their complex enzymes are used to treat with petrochemical excess sludge.It is found that the optimal dosage of enzyme is 40 mg per gram of TSS.Complex enzymes achieve much better anaerobic digestion effect to excess sludge than any single enzyme.Two kinds of single enzyme with better effect are screened out to form complex enzymes that are used to treat with excess sludge.As m(α-amylase):m(proteinase)=1:3,SCOD has increased to 3 775.84 mg·L-1,NH3+-N concentration has increased to 292.09 mg·L-1,phosphorus concentration has increased to 2.83 mg·L-1 and the removal efficiency of VS has increased to 32.3% after 16 h of reaction at 35℃.
章继龙. 石化剩余污泥的酶解预处理技术研究[J]. 现代化工, 2021, 41(5): 191-196.
ZHANG Ji-long. Study on enzymatic hydrolysis pretreatment technology for petrochemical excess sludge. Modern Chemical Industry, 2021, 41(5): 191-196.
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