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Comparative experiment on treating digested piggery wastewater with a biofilm MBR and conventional MBR： simultaneous removal of nitrogen and antibiotics

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Frontiers of Environmental Science & Engineering 2017年第2期11卷 123-131页

作者： Xiaoyan Song Rui Liu Lujun Chen Tomoki kawagishi Zhejiang Provincial Key Laboratory of Water Science and Technology Department of Environment in Yangtze Delta Region Institute of Tsinghua University-Zhejiang Jiaxing 314006 China School of Environment Tsinghua University Beijing 100084 China Aqua Development Center Mitsubishi Rayon Co. Ltd. Toyohashi 4408601 Japan

A biofilm membrane bioreactor （BF-MBR） and a conventional membrane bioreactor （MBR） were parallelly operated for treating digested piggery wastewater. The removal performance of COD, Tn, nH4＋-n, TP as well as antibiotics were simultaneously studied when the hydraulic retention time （HRT） was gradually shortened from 9 d to 1 d and when the ratio ofinfluent COD to Tn was changed. The results showed that the effluent quality in both reactors was poor and unstable at an influent COD/ Tn ratio of 1.0±0.2. The effluent quality was signifcantly improved as the influent COD/Tn ratio was increased to 2.3±0.5. The averaged removal rates of COD, nH4＋-n, Tn and TP were 92.1%, 97.1%, 35.6% and 54.2%, respectively, in the BF-MBR, significantly higher than the corresponding values of 91.7%, 90.9%, 17.4% and 31.9% in the MBR. Analysis of 11 typical veterinary antibiotics （from the tetracycline, sulfonamide, quinolone, and macrolide families） revealed that the BF-MBR removed more antibiotics than the MBR. Although the antibiotics removal decreased with a shortened HRT, high antibiotics removals of 86.8%, 80.2% and 45.3% were observed in the BF-MBR at HRT of 5~4 d, 3-2 d and 1 d, respectively, while the corresponding values were only 83.8%, 57.0% and 25.5% in the MBR. Moreover, the BF-MBR showed a 15% higher retention rate of antibiotics and consumed 40% less alkalinity than the MBR. Results above suggest that the BF-MBR was more suitable for digested piggery wastewater treatment.

关键词： AlkalinityAntibioticsBiofilmDigested piggery wastewater (DPW)Membrane bioreactor

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Comparative study on microbial community in intermittently aerated sequencing batch reactors （SBR） and a traditional SBR treating digested piggery wastewater

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Frontiers of Environmental Science & Engineering 2017年第3期11卷 97-106页

作者： Xiaolin Sheng Rui Liu Xiaoyan Song Lujun Chen kawagishi Tomoki Zhejiang Provincial Key Laboratory of Water Science and Technology Department of Environment in Yangtze Delta Region Institute of Tsinghua University Zhejiang Jiaxing 314006 China School of Environment Tsinghua University Beijing 100084 China Aqua Development Center Mitsubishi Rayon Co. Ltd. Toyohashi 4408601 Japan

A traditional sequencing batch reactor （SBR） and two intermittently aerated sequencing batch reactors （IASBRs） were parallelly operated for treating digested piggery wastewater. Their microbial communities were analyzed, and the nitrogen removal performance was compared during the long term run. IASBRs demonstrated higher removal rates of total nitrogen （Tn） and ammonium nitrogen （nH4＋ -n） than the SBR, and also demonstrated higher resistance against Tn shock load. It was found that the more switch times between aerobic/anoxic in an IASBR, the higher the removal rates of Tn and nH4＋ n. All the reactors were predominated by Thauera, nitrosomonas and nitrobacter, which were considered to be species of denitrifiers, ammonium oxidizing bacteria （AOB） and nitrite oxidizing bacteria （nOB）, respectively. However, the abundance and diversity was of great difference. Compared with SBR, IASBRs achieved higher abundance of denitrification related bacteria. IASBR 1# with four aerobic/anoxic switch times was detected with 25.63% of Thauera, higher than that in IASBR 2# with two aerobic/anoxic switch times （l 1.57% of Thauera）, and much higher than that in the SBR （only 6.19% of Thauera）. IASBR 2# had the highest percentage of AOB, while 1ASBR 1# had the lowest percentage. The denitrifiers abundance was significantly positive correlated with the Tn removal rate. However, the nH4＋ n removal rate showed no significant correlation with the AOB abundance, but might relate to the AOB activity which was influenced by the average free ammonium （FA） concentration. nitrobacter was the only nOB genus detectable in all reactors, and were less than 0.03%.

关键词： Digested piggery wastewater Intermittent aeration aeration Microbial community Partial nitrification^lenitrification processSequencing batch reactor (SBR)

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Advantages of intermittently aerated SBR over conventional SBR on nitrogen removal for the treatment of digested piggery wastewater

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Frontiers of Environmental Science & Engineering 2017年第3期11卷 131-140页

作者： Xiaoyan Song Rui Liu Lujun Chen Baogang Dong Tomoki kawagishi Zhejiang Provincial Key Laboratory of Water Science and Technology Department of Environment in Yangtze Delta Region Institute of Tsinghua University-Zhejiang Jiaxing 314006 China School of Environment Tsinghua University Beijing 100084 China Aqua Development Center Mitsubishi Rayon Co. Ltd. Toyohashi 4408601 Japan

An intermittently aerated sequencing batch reactor （IASBR） and a traditional sequencing batch reactor （SBR） were parallelly constructed to treat digested piggery wastewater, which was in high nH4＋ -n concentration but in a low COD/Tn ratio. Their pollutant removal perfonnance was compared under COD/Tn ratios of 1.6-3.4 d and hydraulic retention times of 5 3 d. The results showed that the IASBR removed Tn, nH4＋-n and TOC more efficiently than the SBR. The average removal rates of Tn, nH4＋-n and TOC were 83.1%, 96.5%, and 89.0%, respectively, in the IASBR, significantly higher than the corresponding values of 74.8%, 82.0%, and 86.2%. in the SBR. Mass balance of organic carbon revealed that the higher Tn removal in the IASBR might be attributed to its efficient utilization of the organic carbon for denitrification, since that 48.7%- 52.2% of COD was used for denitrification in the IASBR, higher than the corresponding proportion of 43.1%-47.4% in the SBR. A prc-anoxic process in the IASBR would enhance the ammonium oxidation while restrict the nitrite oxidation. Anoxic duration of 40-80 min should be beneficial for achieving stable nitritation.

关键词： Anoxic stress Carbon source Digested piggery wastewater Intermittently aerated SBR (IASBR)Total nitrogen

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Poultry litter biochar application in combination with chemical fertilizer and Azolla green manure improves rice grain yield and nitrogen use efficiency in paddy soil

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Biochar 2021年第4期3卷 591-602页

作者： Samuel Munyaka Kimani Putu oki Bimantara Valensi Kautsar Keitaro Tawaraya Weiguo Cheng The United Graduate School of Agricultural Sciences Iwate UniversityMorioka 020-8550Japan Graduate School of Agricultural Sciences Yamagata University1-23Wakaba-machiTsuruokaYamagata 997-8555Japan

Poultry litter biochar is known to improve crop ***,its beneficial interactions with chemical fertilizer and/or organic manure on rice yield and nitrogen(n)use efficiency(nUE)are not well *** objective of this study was to co-apply poultry litter biochar(hereinafter biochar)and chemical fertilizer and/or Azolla as organic manure(herein n fertilizer sources)to improve the productivity of rice and *** treatments-no amendments(control),chemical fertilizer(nPK),Azolla as green manure(Azolla),and nPK+Azolla without and with biochar amendment-were evalu-ated in a pot *** rice plant growth components,yield,and nUE were *** to the treatments without biochar,co-application of biochar and n fertilizer sources significantly improved grain n uptake by 23.9%and nUE by 34.3-246.9%.These treatments also significantly improved rice growth components(5.6-18.2%)and grain yield(32.4%).Significant changes in soil properties including increases in pH,electrical conductivity(EC),total n,organic car-bon,and available phosphorus were observed following biochar *** for the soil pH and EC parameters,no significant synergistic interactions between biochar and n fertilizer sources were observed for any parameters in the present ***,compared to other treatments,the co-application of biochar and Azolla offers a feasible approach to improve rice productivity and nUE and reduce chemical fertilizer use,thereby reducing agricultural pollution and production costs.

关键词： Azolla n use efficiency Poultry litter biochar Rice paddy Synergistic effects

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Influence of Radioactive Gas on Size Measurement of Radioactive Aerosol Particles by Diffusion Battery Method in Accelerator Facilities

Influence of Radioactive Gas on Size Measurement of Radioact...

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作者： Y.oki n.Osada K.Yamasaki Research Reactor Institute Kyoto University Graduate School of Engineering Kyoto University

InTRODUCTIOn:Various airborne radioactive nuclides are formed in air of accelerator rooms during machine *** behavior of aerosols bearing thus formed radioactive atoms in radiation fields gives us useful information on both of aerosol creation in the atmosphere and radiation protection against inhalation of airborne *** for time variation of the particle size distribution of the aerosols is an effective way to clarify the ***,the diffusion battery(DB) method,a typical size measurement

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Water Consumption Pattern among Young Adults in a Higher Institution in Mubi Adamawa State

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Food and nutrition Sciences 2020年第10期11卷 969-982页

作者： nkereuwem Sunday Etukudoh Ocheola oki Joyce Ene Department of Haematology Federal School of Medical Laboratory Science Jos Plateau State Nigeria Federal School of Medical Laboratory Science Jos Plateau State Nigeria

Considering the injurious effects of hypohydration, a study on the water consumption pattern of young adult in a specified higher institution in Adamawa State was sought due to concerns on the low plain water consumption with the objectives of understanding the average daily consumption, as well as knowing contributors to total body fluid intake. A qualitative cross sectional sweep survey (CSSS)n> using simple random sampling (SRS) method was carried out, a pilot sturdy which achieved a cronback alpha of >0.7 reliability questionnaire was used to carry, while Conchrans formula was adopted to determine sample size N, which was 400. The result showed that majority of the respondents 176(44) were 21 years of age in their early adulthood, many, 187(46.75) used borehole water as their source of household water. Most of the respondents 272(69) agreed to drinking rain water. Some respondents 200(50) choose pure satchet water as their major source of drinking water, about half 200(50) of the respondents drink 1.5 L or less of water daily, while only 13(3.25) of the respondents drink 5 - 6 L/day of water, on the average. Most of the respondents 174(43.3) take orange as their most commonly consumed fruit, taking a maximum of 4 oranges per day, 160(40) of the respondents eat apple as their most commonly consumed fruit, with a maximum of one apple a day both applen>sn style="font-family:Verdana;"> and oranges give 87% fluid of their total weight. Some resp

关键词： Water Consumption Pattern Young Adults Hypohydration

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Excessive portal flow causes graft failure in extremely small-for-size liver transplantation in pigs

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World Journal of Gastroenterology 2005年第44期11卷 6954-6959页

作者： Hong-Sheng Wang nobuhiro Ohkohchi Yoshitaka Enomoto Masahiro Usuda Shigehito Miyagi Takeshi Asakura Hiroo Masuoka Takashi Aiso Keisuke Fukushima Tomohiro narita Hideyuki Yamaya Atsushi nakamura Satoshi Sekiguchi n.oki kawagishi Akira Sato Susumu Satomi Division of Advanced Surgical Science and Technology Department of Surgery

AIM： To evaluate the effects of a portocaval shunt on the decrease of excessive portal flow for the prevention of sinusoidal microcirculatory injury in extremely smallfor-size liver transplantation in pigs. METHODS： The right lateral lobe of pigs, i.e. the 25% of the liver, was transplanted orthotopically. The pigs were divided into two groups： graft without portocaval shunt （n = 11） and graft with portocaval shunt （n = 11）. Survival rate, portal flow, hepatic arterial flow, and histological findings were investigated. RESULTS： In the group without portocaval shunt, all pigs except one died of liver dysfunction within 24 h afcer transplantation. In the group with portocaval shunt, eight pigs survived for more than 4 d. The portal flow volumes before and after transplantation in the group without portocaval shunt were 118.2±26.9 mL/min/100 g liver tissue and 270.5±72.9 ml./min/100 g liver tissue, respectively. On the other hand, in the group with portocaval shunt, those volumes were 124.2±27.8 ml./ min/100 g liver tissue and 42.7±32.3 mL/min/100 g liver tissue, respectively （P〈0.01）. As for histological findings in the group without portocaval shunt, destruction of the sinusoidal lining and bleeding in the peri-portal areas were observed afl：er reperfusion, but these findings were not recognized in the group with portocaval shunt. COnCLUSIOn： These results suggest that excessive portal flow is attributed to post transplant liver dysfunction after extreme small-for-size liver transplantation caused by sinusoidal microcirculatory injury.

关键词： Hyperperfusion syndrome Liver regeneration Portocaval shunt Postoperative liver dysfunction Sinusoidal microcirculatory injury Small-for-size liver transplantation

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Behavior of Colloidal Species Formed in the Cooling Water of Accelerator Facilities

Behavior of Colloidal Species Formed in the Cooling Water of...

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作者： K.Bessho H.Matsumura K.Masumoto Y.oki n.Osada n.Kinoshita Radiation Science Center KEK Tandem Accelerator Complex University of Tsukuba

InTRODUCTIOn:In accelerator facilities,a management of cooling water is one of the important *** water was often contaminated with metal ions and colloids associated with radionuclides during operation. For example,Be-7 is produced by spallation reaction of oxygen in water and associated with metal oxide colloids at the high-energy and high-intensity ***, colloid-formation processes in water is not clearly *** this work,metals such as Fe,Cu and Al contacted with water were irradiated byγ-ray,bremsstrah-

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会呼吸的家

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建筑实践 2015年第6期 6-11页

作者：李莹 Hiroyuki oki

项目名称:Termitary House项目地点:Thanh Kh e District Da nang,Vietnam建筑设计:Tropical Space责任建筑师:nguyen Hai Long,Phan Quang Vinh,Tran Thi ngu ngon Trinh Thanh Tu占地面积:190sqm完成时间:2014这座名为白蚁窝公寓的两层住宅位于越南中部沿海城市岘港,这一地区的气候相当极端,旱季和雨季显著不同,每年都会遭受很多热带风暴的侵扰。此外,岘港亦因占婆烤砖塔而闻名于世,它们修建于四世纪晚期至十五世纪的古占婆王国时期,在所有占婆王朝的遗址中,“My So'n”圣地最富盛名。

关键词：建筑师不同时间段平面图

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Influence of Collectiong Substrates on Size Distribution Measurement of n-13 and Rn-Progeny by Low Pressure Cascade Impactor in the Linac Facility

Influence of Collectiong Substrates on Size Distribution Mea...

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作者： K.Yamasaki Y.oki n.Osada S.Yokoyama S.Tokonami A.Sorimachi S.Takahashi Fujita Health University national Institute of Radiological Sciences

InTRODUCTIOn:At high energy accelerators like FFAG(*** 150 MeV,*** current 1 hA),the radiation protection toward the induced airborne particulate radio-nuclides is one of the key issues for radiation safety of *** fine particle generation and induced particulate radioactivity in high energy and high dose accelerator radiation field have been Co-60 gamma irradiation facility and Linac in *** report describes mainly the experimental results which were

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