摘要
为考察超声波-缺氧/好氧消化对污泥降解的效果,通过实验室中试对比试验,研究了污泥超声波-缺氧/好氧消化对传统好氧消化的比较优势。研究结果表明,经过25 d的消化后,超声波-缺氧/好氧消化污泥TSS和VSS的去除率分别达到了35.77%和50.02%,比好氧消化污泥分别提高了3.90%和8.99%;超声波-缺氧/好氧消化污泥稳定时间比好氧消化污泥缩短了近6 d;超声波-缺氧/好氧消化污泥的TN去除率为40.8%,远高于传统好氧消化,并且超声波-缺氧/好氧消化污泥上清液中氨氮和硝态氮浓度却远低于传统好氧消化,因而降低了上清液回流氨氮和硝态氮对污水处理系统的负荷压力。
In order to explore the efficiency of ultrasonic-aerobic/anoxic digestion Ibr sludge biodegradation, the contrastive pilot scale experiments of ultrasonic-aerobic/anoxic digestion and conventional aerobic digestion were conducted. The results showed that, TSS and VSS removal efficiency of ultrasonic-aerobic/anoxic digestion achieved to 35.77 % and 50.02 %, which were increased by 3.90 % and 8.99 %, respectively, after digestion time of 25 d. The digestion time for ultrasonic-aerobic/anoxic digestion was shortened by 6 d compared to conventional aerobic digestion; TN removal efficiency of ultrasonic-aerobic/anoxic digestion was 40.8 %, which was much higher than that of aerobic digestion. Furthermore, anamonia and nitrate concentrations in sludge supematant of ultrasonic-aerobic/anoxic digestion were lower than that of aerobic digestion, so that the pressure of circumftuence to wastewater treatment plant was reduced.
出处
《广东化工》
CAS
2016年第11期156-157,159,共3页
Guangdong Chemical Industry
关键词
超声波预处理
缺氧/好氧消化
好氧消化
ultrasonic pretreatmenh aerobic/anoxic digestion
aerobic digestion
