[通过提高污泥利用率的水解反应器改善出水碳源及减少污泥量]

[Effluent carbon source improvement and sludge reduction by hydrolysis reactor with enhanced sludge utilization].

作者信息

Xiong Ya, Wang Qiang, Song Ying-Hao, Zhu Min, Lin Xiu-Jun

机构信息

School of Water Resource & Environment, China University of Geosciences, Beijing 100083, China.

出版信息

Huan Jing Ke Xue. 2013 Jul;34(7):2748-51.

PMID:24028008

Abstract

In order to strengthen the sludge hydrolysis and improve effluent carbon source, the structure of currently existing hydrolysis reactor was reformed. The new process combined separation of suspended solids in influent and hydrolysis of settled sludge. Experimental results show that the removal rate of SS was 81.4%, the average SS/BOD5 ratio of effluent was dropped to 0.4, far less than that of the influent ratios; SCOD/COD and COD(0.45-5)/COD ratio of the effluent increased by 35.4% and 17.7%, but the COD(> 100)/COD ratio reduced by 53.2%; BOD5/TN ratio increased from 3.7 to 4.7 and the BOD5/TP ratio from 23.8 to 36.4. The improvement of effluent carbon source was helpful for nitrogen and phosphorus removal in follow-up process. Meanwhile, the hydrolytic rate of sludge was up to 51.9%, realizing the reduction and resource-regeneration.

摘要

为强化污泥水解并改善出水碳源，对现有水解反应器结构进行了改造。新工艺将进水悬浮固体分离与沉淀污泥水解相结合。实验结果表明，SS去除率为81.4%，出水平均SS/BOD5比值降至0.4，远低于进水比值；出水SCOD/COD和COD(0.45 - 5)/COD比值分别提高了35.4%和17.7%，但COD(>100)/COD比值降低了53.2%；BOD5/TN比值从3.7提高到4.7，BOD5/TP比值从23.8提高到36.4。出水碳源的改善有助于后续工艺中氮磷的去除。同时，污泥水解率高达51.9%，实现了减量与资源再生。