内循环接触氧化型膜生物反应器部分硝化启动与运行条件

doi:10.16085/j.issn.1000-6613.2018-2346

化工进展 ›› 2019, Vol. 38 ›› Issue (9): 3995-4002.DOI: 10.16085/j.issn.1000-6613.2018-2346

内循环接触氧化型膜生物反应器部分硝化启动与运行条件

钱允致^1,²(),马华继^1,²(),苑宏英^1,²,丁艳梅^1,²,张轶凡³,田素凤^1,²,李玉友⁴,池勇志^1,²,张博文^1,²

1. 天津城建大学环境与市政工程学院，天津 300384
2. 天津市水质科学与技术重点实验室，天津 300384
3. 天津凯英科技发展股份有限公司，天津市污废水生化处理技术工程中心，天津 300381
4. 日本东北大学工学部，日本仙台 980-8579

收稿日期:2018-12-03 出版日期:2019-09-05 发布日期:2019-09-05
通讯作者: 马华继
作者简介:钱允致（1993—），男，硕士研究生，研究方向为废水生物脱氮。E-mail：qianyunzhi_00@163.com。
基金资助:
天津城建大学校企合作项目(hx2017-65);天津城建大学大学生创新创业项目(201810792011);“十三五”国家重大科技专项(2017ZX07107-002-04);天津市企业科技特派员项目(18JCTPJC60800);天津市高等学校科技发展基金计划项目(20140518);天津市水质科学与技术重点实验室开放基金(TJKLAST-PT-2017-01)

Partial nitrification start-up and operation process of internal circulation contact oxidation membrane bioreactor

Yunzhi QIAN^1,²(),Huaji MA^1,²(),Hongying YUAN^1,²,Yanmei DING^1,²,Yifan ZHANG³,Sufeng TIAN^1,²,Yuyou LI⁴,Yongzhi CHI^1,²,Bowen ZHANG^1,²

1. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
2. Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China
3. Tianjin Municipal Wastewater Biochemical Treatment Engineering Technology Center, Tianjin Caring Technology Development Co. , Ltd. , Tianjin 300381, China
4. Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan

Received:2018-12-03 Online:2019-09-05 Published:2019-09-05
Contact: Huaji MA

摘要/Abstract

摘要：

部分硝化-厌氧氨氧化工艺可用于高氨氮废水的经济高效处理，部分硝化是实现该工艺启动和稳定运行的前提。研究构建了连续流的内循环接触氧化型膜生物反应器（ICCOMBR），对其部分硝化的启动和稳定运行特性进行了研究。结果表明：以普通絮状活性污泥接种，在30℃、氮负荷0.25kg/(m³·d)、溶解氧（DO）2.0～2.5mg/L条件下，18d内成功启动了系统的部分硝化，氨氮去除率（ARE）和亚硝态氮积累率（NAR）分别达到99.16%和84.55%，容积亚硝化速率可达0.126gNO₂-N/(L·d)，同时容积硝化速率下降到0.031gNO₃-N/(L·d)。系统的亚硝化率与碱度消耗量呈现良好的线性相关性。部分硝化启动完成后，将氨氮负荷降低为0.1kg/(m³·d)，部分硝化功能迅速被破坏，通过降低曝气量将DO从2.0～2.5mg/L降低为1.0mg/L，在6d时间内硝化率从71.4%下降到11.1%，ARE和NAR分别达到98.87%和83.65%，部分硝化性能成功恢复。经过57d的运行，系统内的污泥生物量从接种时的1.85gVSS/L增长为3.47gVSS/L。

关键词: 高氨氮废水, 部分硝化, 氨氧化细菌, 氮负荷, 膜生物反应器, 生物填料

Abstract:

Partial nitrification is the prerequisite of start-up and operation of partial nitrification-anaerobic ammonium oxidation process for the efficient treatment of ammonia-rich wastewater. In this paper, the continuous flow internal circulation contact oxidation membrane bioreactor (ICCOMBR) for ammonia-rich wastewater treatment was constructed, and its start-up and operation characteristics were investigated. The results showed that under the conditions of seeding with activated sludge, water temperature 30℃, nitrogen load rate (NLR) 0.25kg/(m³·d), and dissolved oxygen (DO) 2.0—2.5mg/L, the part-nitrification of the bio-system could be realized successfully within 18d. The corresponding ammonia removal ef?ciency (ARE) and nitrite accumulation rate (NAR) reached 99.16% and 84.55%, respectively. Its volume nitrosation rate was 0.126gNO₂-N/(L·d)，while its volume nitrification rate was only 0.031g NO₃-N/(L·d). There was high linear correlation between the nitrosation rate and the alkalinity consumption. After the start-up of part-nitrification, the part-nitrification performance of the biosystem could be destroyed through decrease of the NLR to 0.1kg/(m³·d). With the decrease of the DO from 2.0—2.5mg/L to 1.0mg/L, the part-nitrification performance of the biosystem could be rebuilt within 6d, the nitrification ratio decreased from 71.4% to 11.1%, and its ARE and NAR reached 98.87% and 83.65%, respectively. Within 57d, the biomass in the biosystem increased from initial 1.85gVSS/L^{to 3.47gVSS/L.}

Key words: ammonia-rich wastewater, partial nitrification, ammonia oxidizing bacteria (AOB), nitrogen load rate, membrane bioreactor (MBR), biocarrier

中图分类号:

X703.1

钱允致,马华继,苑宏英,丁艳梅,张轶凡,田素凤,李玉友,池勇志,张博文. 内循环接触氧化型膜生物反应器部分硝化启动与运行条件[J]. 化工进展, 2019, 38(9): 3995-4002.

Yunzhi QIAN,Huaji MA,Hongying YUAN,Yanmei DING,Yifan ZHANG,Sufeng TIAN,Yuyou LI,Yongzhi CHI,Bowen ZHANG. Partial nitrification start-up and operation process of internal circulation contact oxidation membrane bioreactor[J]. Chemical Industry and Engineering Progress, 2019, 38(9): 3995-4002.

图/表 6

图1 内循环生物接触氧化膜生物反应器

表1 反应器运行参数

运行阶段	进水氨氮/mg·L^-1	HRT/h	氨氮负荷/kg·(m³·d)^-1	DO/mg·L^-1	回流比/%	进水pH	反应器内水温/℃
第一阶段	100	24	0.1	2~5	150	7.9~8.2	30
第二阶段	250	24	0.25	2~2.5	150	7.9~8.2	30
第三阶段	100	24	0.1	1~2.5	150	7.9~8.2	30

图2 系统部分硝化启动和运行情况

图3 进出水碱度的变化

图4 进出水碱度消耗量与亚硝化效率关系

图5 碱度消耗量/亚硝化量与碱度消耗量/硝化量变化

参考文献 17

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内循环接触氧化型膜生物反应器部分硝化启动与运行条件

Partial nitrification start-up and operation process of internal circulation contact oxidation membrane bioreactor

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