Research on the cultivation of nitrosifying granular sludge in CSTR

doi:10.11894/1005-829x.2015.35(5).052

INDUSTRIAL WATER TREATMENT ›› 2015, Vol. 35 ›› Issue (5): 48-52. doi: 10.11894/1005-829x.2015.35(5).052

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Research on the cultivation of nitrosifying granular sludge in CSTR

Ding Lingling¹, Shen Yaoliang^1,2, Liu Wei¹

1. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;
2. Jiangsu Key Lab of Environmental Science and Engineering, Suzhou 215011, China

Received:2015-04-13 Online:2015-05-20 Published:2015-05-22

连续流式反应器培养亚硝化颗粒污泥的研究

丁玲玲¹, 沈耀良^1,2, 刘伟¹

1. 苏州科技学院环境科学与工程学院, 江苏苏州 215011;
2. 江苏省环境科学与工程重点实验室, 江苏苏州 215011

通讯作者: 沈耀良,教授,博士生导师。E-mail:ylshenniu@126.com。 E-mail:ylshenniu@126.com
作者简介:丁玲玲(1989—),硕士。E-mail:DLL890122@126.com。
基金资助:
江苏省高校自然科学研究重大项目(12KJA610002);江苏省普通高校研究生科研创新计划项目(CXZZ12_0857)

Abstract

Abstract:

Nitrosifying granular sludge has been cultivated by using continuous-flow stirred tank reactors(CSTR), seeding ordinary activated sludge,shortening settling time gradually and upgrading influent load. This process has already been investigated. The results show that matured nitrosifying granular sludge can be obtained after the system has been operated for 125 days. The color of granular sludge is yellow,its average settling rate reaches 26.8 m/h,and 99% of the full amount of granular sludge has grain sizes bigger than 0.58 mm. The effuent nitrite accumulation rate is more than 90%. The cumulative rate of nitrite reaches 4.8 kg/(m³·d). The research on highly concentrated free ammonia(FA) and free nitrous acid(FNA) are the main reasons for the successful realization of the research on nitrosation.

Key words: CSTR, granular sludge, nitrosation, free ammonia(FA), free nitrous acid(FNA)

摘要：

利用连续流式反应器,以普通活性污泥为种泥,通过逐步缩短沉降时间和提升进水负荷培养亚硝化颗粒污泥,并对该过程进行考察。结果表明:系统运行125 d后,获得成熟的亚硝化颗粒污泥,颗粒污泥颜色为黄色,平均沉降速率达26.8 m/h,其中粒径大于0.58 mm的约占总数的99%;出水中亚硝酸盐累积率稳定在90%以上,亚硝酸盐累积速率达4.8 kg/(m³·d);高浓度游离氨(FA)与游离亚硝酸(FNA)是研究亚硝化成功实现的主要原因。

关键词: 连续流式反应器, 颗粒污泥, 亚硝化, 游离氨, 游离亚硝酸

CLC Number:

X703.1

Ding Lingling, Shen Yaoliang, Liu Wei. Research on the cultivation of nitrosifying granular sludge in CSTR[J]. INDUSTRIAL WATER TREATMENT, 2015, 35(5): 48-52.

丁玲玲, 沈耀良, 刘伟. 连续流式反应器培养亚硝化颗粒污泥的研究[J]. 工业水处理, 2015, 35(5): 48-52.

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References

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