低强度超声在低C/N污水处理中的应用

doi:10.11894/1005-829x.2017.37(5).063

工业水处理 ›› 2017, Vol. 37 ›› Issue (5): 63-67. doi: 10.11894/1005-829x.2017.37(5).063

低强度超声在低C/N污水处理中的应用

王佳琪, 朱易春, 李齐佳

江西理工大学建筑与测绘工程学院, 江西赣州 341000

收稿日期:2017-03-13 修回日期:2017-03-13 出版日期:2017-05-20 发布日期:2017-06-03
通讯作者: 朱易春,博士,副教授。E-mail:zyc@mail.jxust.cn。 E-mail:zyc@mail.jxust.cn
作者简介:王佳琪(1992-),硕士。E-mail:jiaqide1@163.com。
基金资助:
江西省教育厅重点项目（GJJ150615）；江西理工大学重点基金项目（NSFJ2015-K04）；江西省研究生创新专项资金项目（016-S312）

Application of low-intensity ultrasound to the treatment of low C/N sewage

Wang Jiaqi, Zhu Yichun, Li Qijia

School of Architectural and Surveying Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

Received:2017-03-13 Revised:2017-03-13 Online:2017-05-20 Published:2017-06-03

摘要/Abstract

摘要：

采用低C/N污水驯化的污泥为试验对象，以比耗氧速率和脱氢酶活性为表征，研究在超声频率为20 kHz，功率密度为0~0.35 W/mL、辐照时间为0~60 min处理后污泥活性的变化。结果显示，当采用声能密度和辐照时间为0.2 W/mL和12 min时，提高污泥活性的效果最显著。探究最佳条件下超声处理后0~10 h污泥活性的变化规律，发现辐照后5 h污泥活性达到最大，随后逐渐下降，直到8~10 h促进作用基本消失。采用辐照污泥比例分别为5%、15%和25%时，得出的最佳辐照污泥比例为15%，COD、氨氮、总磷出水浓度比对照组分别降低39.6%、37.1%、14.9%。

关键词: 低强度超声, 污泥活性, 低C/N污水, 比耗氧速率, 脱氢酶活性

Abstract:

Using low C/N wastewater cultivated sludge as experiment object,and specific oxygen uptake rate(SOUR)and dehydrogenase(DHA) as characterization,the sludge activity changes have been studied,after treated under the conditions below:ultrasonic frequency 20 kHz,power density 0-0.35 W/mL,and irradiation time 0-60 min. The re-sults show that when the sound energy density is 0.2 W/mL and irradiation time 12 min,the effects of increasing sludge activity is the most remarkable. After treated under the optimal conditions for 0-10 h. The changing rule of the activity of sludge is probed into. It is found that after irradiated for 5 h,the sludge activity reaches the highest, then goes down gradually,and the stimulating effect disappears basically till 8-10 h. When the proportions of irra-diated sludge used are 5%,15% and 25% respectively,the best irradiated sludge proportion obtained is 15%. Com-pared with the contrasted group,the concentrations of COD,ammonia nitrogen and total phosphorus in effluent de-crease by 39.6%,37.1% and 14.9%,respectively.

Key words: low-intensity ultrasound, sludge activity, low C/N wastewater, SOUR, DHA

中图分类号:

X703.1

王佳琪, 朱易春, 李齐佳. 低强度超声在低C/N污水处理中的应用[J]. 工业水处理, 2017, 37(5): 63-67.

Wang Jiaqi, Zhu Yichun, Li Qijia. Application of low-intensity ultrasound to the treatment of low C/N sewage[J]. INDUSTRIAL WATER TREATMENT, 2017, 37(5): 63-67.

https://www.iwt.cn/CN/Y2017/V37/I5/63

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低强度超声在低C/N污水处理中的应用

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