Impact of fruit peel coagulant as an external carbon source on low carbon source sewage treatment
In order to explore the effect of peel coagulant plus carbon source on low carbon source sewage treatment,the sequential batch activated sludge method(SBR)was used to conduct the experiment,and explore the effect of HFP dosage,HRT and inlet pH value on simulated low carbon source sewage treatment.Compared to sodium acetate,the effect of HFP on actual low carbon source sewage treatment was investigated.The results showed that,for the simulated low carbon source sewage,when the HRT was 12 h,the pH value was 7,the HFP dosage was 40 mL/L,the removal rates of NH4+-N and TN reached 86%and 73%respectively.The optimal treatment effect was obtained under the condition that the HFP dosage was 40 ml/L,the pH value was 7 and the HRT was 16 h,the removal rates of COD and TN reached 89%and 78%then.When the HFP dosage was 40 mL/L,the HRT was 12 h,the pH value was 7,for the actual low carbon source sewage treatment,the removal rates of COD and NH4+-N with HFP addition was close to that with sodium acetate addition,and the removal rate of TN was 6.6%lower than that with sodium acetate addition.As an external carbon source,HFP can effectively improve the removal rates of COD and TN in low carbon source sewage,which shows promotion and application potential.
low carbon source sewageexternal carbon sourcedenitrificationpeel coagulantSBRHRTpH value