Please wait a minute...
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2010, Vol. 11 Issue (2): 132-142    DOI: 10.1631/jzus.A0900437
Environmental Engineering     
Treatment and hydraulic performances of the NiiMi process for landscape water
Jian YANG, Liang-bo ZHANG, Yi-fan WU, Ya-yi WANG, Cui LI, Wen LIU
State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
Download:     PDF (0 KB)     
Export: BibTeX | EndNote (RIS)      

Abstract  This paper describes the NiiMi process designed to treat landscape water. The main aim of the research was to investigate the feasibility of NiiMi for removing organic and nutriment materials from landscape water. During the batch-scale NiiMi operation, the removal rates of color ranged from 66.7%–80%, of turbidity from 31.7%–89.3%, of chemical oxygen demand (COD) from 7%–36.5%, of total phosphor (TP) from 43%–84.2%, of soluble phosphate from 42.9%–100%, of total nitrogen (TN) from 4.2%–46.7%, and of NH4+-N from 39.3%–100% at the hydraulic loading of 0.2 m3/(m2·d). Results showed that the removal efficiencies of COD, TP, soluble phosphate and TN decreased with the decline in the temperature. The NiiMi process had a strong shock loading ability for the removal of the organics, turbidity, TP, soluble phosphate, TN and NH4+-N. Three sodium chloride tracer studies were conducted, labeled as TS1, TS2, and TS3, respectively. The mean hydraulic retention times (mean HRTs) were 31 h and 28 h for TS1 and TS2, respectively, indicating the occurrence of a dead zone volume of 12% and 20% for TS1 and TS2, respectively. TS1 and TS2 displayed the occurrence of short-circuiting in the NiiMi system. The comparison results between TS1 and TS2 were further confirmed in the values obtained for some indicators, such as volumetric efficiency (e), short-circuiting (S), hydraulic efficiency (λ) and number of continuously stirred tank reactors (N).

Key wordsNiiMi system      Landscape water      Purification efficiency      Hydraulic efficiency      Tracers     
Received: 10 March 2009      Published: 01 January 2010
CLC:  X5  
Cite this article:

Jian YANG, Liang-bo ZHANG, Yi-fan WU, Ya-yi WANG, Cui LI, Wen LIU. Treatment and hydraulic performances of the NiiMi process for landscape water. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2010, 11(2): 132-142.

URL:

http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0900437     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2010/V11/I2/132

[1] Bi-xin Chen, Si Wang, Wei-dong Yang, Ren-chang Yan, Xuan Chen, Qing-yu Zhang. Characteristics and origins of a typical heavy haze episode in Baotou, China: implications for the spatial distribution of industrial sources[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2017, 18(2): 151-162.
[2] Yan-jie Wei, Guo-yi Li. Membrane fouling behavior and microbial community succession in a submerged membrane bioreactor treating harbor oily wastewater[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2016, 17(9): 745-757.
[3] Chi Guan, Hai-jian Xie, Zhan-hong Qiu, Yun-min Chen, Pei-xiong Chen. One-dimensional coupled model for landfill gas and water transport in layered unsaturated soil cover systems[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2016, 17(8): 667-676.
[4] Xiao-dong Li, Yong Ren, Sha-sha Ji, Xia-li Hou, Tong Chen, Sheng-yong Lu, Jian-hua Yan. Emission characteristics of hazardous components in municipal solid waste incinerator residual ash[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2015, 16(4): 316-325.
[5] Xu Cai, Qun-xing Huang, Moussa-mallaye Alhadj-Mallah, Yong Chi, Jian-hua Yan. Characterization of zinc vapor condensation in fly ash particles using synchrotron X-ray absorption spectroscopy[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2015, 16(1): 70-80.
[6] Qing-yu Zhang, Xin-xing Li, Wei-li Tian, Ang-yi Fu, Wei-fei Du, Cui Wang. Scenarios for vehicular air pollutant emissions abatement: a case study in Hangzhou, China[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(9): 753-760.
[7] Lu-qing Zhang, Yu-kun Zhang, Xiu-chun Lin, Kun Yang, Dao-hui Lin. The role of humic acid in stabilizing fullerene (C60) suspensions[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(8): 634-642.
[8] Jian Wang, Wen-xiong Wang. Significance of physicochemical and uptake kinetics in controlling the toxicity of metallic nanomaterials to aquatic organisms[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(8): 573-592.
[9] Kun Yang, Dao-hui Lin. Environmental risks of engineered nanomaterials[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(8): 547-551.
[10] Kun Xie, Xiang-xue Wang, Zheng-jie Liu, Ahmed Alsaedi, Tasawar Hayat, Xiang-ke Wang. Synthesis of flower-like α-Fe2O3 and its application in wastewater treatment[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(8): 671-680.
[11] Kun Yang, Zi-li Yi, Qing-feng Jing, Dao-hui Lin. Dispersion and aggregation of single-walled carbon nanotubes in aqueous solutions of anionic surfactants[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(8): 624-633.
[12] Ying-qing Deng, Jason C. White, Bao-shan Xing. Interactions between engineered nanomaterials and agricultural crops: implications for food safety[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(8): 552-572.
[13] Zhong-yuan Wang, Lin Duan, Dong-qiang Zhu, Wei Chen. Effects of Cu(II) and Ni(II) ions on adsorption of tetracycline to functionalized carbon nanotubes[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(8): 653-661.
[14] Fabiola Moreno-Olivas, Vincent U. Gant Jr. , Kyle L. Johnson, Jose R. Peralta-Videa, Jorge L. Gardea-Torresdey. Random amplified polymorphic DNA reveals that TiO2 nanoparticles are genotoxic to Cucurbita pepo[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(8): 618-623.
[15] Yun Shi, Yin-feng Xia, Bi-hong Lu, Nan Liu, Lei Zhang, Su-jing Li, Wei Li. Emission inventory and trends of NOx for China, 2000–2020[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(6): 454-464.