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| 1 | Combined effects of volume ratio and nitrate recycling ratio on nutrient removal,sludge characteristic and microbial evolution for DPR optimization显示文摘The optimization of volume ratio(V_(An)/V_(A)/V_(0))and nitrate recycling ratio(R)in a two-sludge denitrifying phosphorus removal(DPR)process of Anaerobic Anoxic Oxic-Moving Bed Biofilm Reactor(A^(2)/O-MBBR)was investigated.The results showed that prolonged anaerobic retention time(HRT An:1.25→3.75 hr)exerted favorable effect on chemical oxygen demand(COD)removal(57.26%→73.54%),poly-β-hydroxyalkanoates(PHA)synthesis(105.70→138.12 mg COD/L)and PO_(4)^(3-)release(22.3→38.9 mg/L).However,anoxic retention time(HRT A)and R exhibited positive correlation with PHA utilization(43.87%-81.34%)and denitrifying phosphorus removal(DPR)potential(NO_(3)-/PO^(3-)_(4):0.57-1.34 mg/mg),leading to dramatical TN removal variations from 68.86%to 81.28%.Under the V An/V A/V O ratio of 2:6:0,sludge loss deteriorated nutrient removals but the sludge bioactivity quickly recovered when the oxic zone was recovered.The sludge characteristic and microstructure gradually transformed under the dissolved oxygen(DO)control(1.0-1.5→1.5-2.0 mg/L),in terms of sludge volume index(SVI:194→57 m L/g VSS),median-particle-size(D 50:99.6→300.5μm),extracellular polymeric substances(EPS)(105.62→226.18 mg/g VSS)and proteins/polysaccharides(PN/PS)ratio(1.52→3.46).Fluorescence in situ hybridization(FISH)results showed that phosphorus accumulation organisms(PAOs)(mainly Cluster I of Accumulibacter,contribution ratio:91.79%-94.10%)dominated the superior DPR performance,while glycogen accumulating organisms(GAOs)(mainly Competibacter,contribution ratio:82.61%-86.89%)was responsible for deteriorative TN and PO_(4)^(3-)removals.The optimal HRT A and R assembled around 5-6.5 hr and 300%-400%based on the PHA utilization and DRP performance,and the oxic zones also contributed to PO_(4)^(3-)removal although it showed low dependence on DO concentration and oxic retention time(HRT_(0)). | Miao Zhang Jing Gao Yajun Fan Xiaoge Wu Jun Wu Chengda He | 2021 | Journal of Environmental Sciences2021，33，6： | 6 |
| 2 | An antiretroviral regimen containing 6 months of stavudine followed by long-term zidovudine for first-fine HIV therapy is optimal in resource-limited settings: a prospective, multicenter study in China显示文摘 | Li Taisheng Guo Fuping Li Yijia Zhang Chengda Han Yang Lye Wei He Yun Lu Hongzhou Xie Jing Huang Aiqiong Li Yanling Tang Xiaoping Wang Hui Zhang Tong Gao Guiju Lei Junkang Zhang Xiaoying Wu Xinhua Sun Yongtao Bai Jinsong Luo Ling Wang Huanlmg | 2014 | Chinese Medical Journal2014，，1： | 6 |
| 3 | Corrosion analysis, and use of an inhibitor in oil wells显示文摘 | Jiandong Li Chengda Wang Jie Liu Li Liu Zhifu Yin Yongqiang Zhang Hui Li Fei He | 2014 | Research on Chemical Intermediates2014，，2： | 1 |
| 4 | Characterizations of Mg-W System Graded-Density Impactors for Complex Loading Experiments显示文摘 | Guoqiang Luo Jinsong Bai Hua Tan Qiang Shen Jianbo Hu Qingsong Wang Chengda Dai Qiang Wu Lianmeng Zhang | 2010 | Metallurgical and Materials Transactions A2010，，9： | 1 |
| 5 | A Meta-analysis of 2-Year Effect After Surgery: Laparoscopic Roux-en-Y Gastric Bypass Versus Laparoscopic Sleeve Gastrectomy for Morbid Obesity and Diabetes Mellitus显示文摘 | Chengda Zhang Yuan Yuan Cuiqiong Qiu Weidong Zhang | 2014 | Obesity Surgery2014，，9： | 1 |
| 6 | Characterizations of Mg-W System Graded-Density Impactors for Complex Loading Experiments显示文摘 | Guoqiang Luo Jinsong Bai Hua Tan Qiang Shen Jianbo Hu Qingsong Wang Chengda Dai Qiang Wu Lianmeng Zhang | 2010 | Metallurgical and Materials Transactions A2010，，9： | 1 |
| 7 | Numerical simulation of reservoir sediment and effects on hydrodynamic response of arch dams 显示文摘 | ZHANG Chuhan YAN Chengda WANG Guanglun | 2001 | Earthquake Engineering and Structure Dynamics2001，30，： | 1 |
| 8 | Nu- merical Simulation of Reservoir Sediment and Effects on Hydro-dynamic Response of Arch Dams 显示文摘 | Zhang Chuhan Yan Chengda Wang Guanglun | 2001 | Earthquake Engineering and Structure Dynam- ics2001，30，： | 1 |
| 9 | Surface modification of pure titanium treated with B 4 C at high temperature显示文摘 | Lijian He Xiaonong Zhang Chengda Tong | 2004 | Surface & Coatings Technology2004，，9： | 1 |
| 10 | Modeling membrane fouling in a submerged membrane bioreactor by considering the role of solid,colloidal and soluble components 显示文摘 | Wu Jun He Chengda Zhang Yaping | 2012 | Journal of Membrane Science2012，397，： | 1 |
| 11 | Surface modifica- tion of pure titanium treated with B,C at high temperature 显示文摘 | He Lijian Zhang Xiaonong Tong Chengda | 2006 | Surface & Coatings Technology2006，，200： | 1 |
| 12 | Numerical simulation of reservoir sediment and effects on hydrodynamic response of arch dams 显示文摘 | Zhang Chuhan Yah Chengda Wang Guanglun | 2001 | Earthquake Engineering and Structure Dynamics2001，30，： | 1 |
| 13 | Numerical simulation of reservoir sediment and effects on hydrodynamic response of arch dams显示文摘 | Zhang Chuhan Yan Chengda Wang Guanglun | 2001 | Earthquake Engineering and Structure Dynamics2001，30，： | 1 |
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