Nitrogen removal efficiencies and microbial communities in full-scale IFAS and MBBR municipal wastewater treatment plants at high COD:N ratio  

作　　者：Supaporn Phanwilai Naluporn Kangwannarakul Pongsak(Lek)Noophan Tamao Kasahara Akihiko Terada Junko Munakata-Marr Linda Ann Figueroa 

机构地区：[1]Department of Environmental Enginering,Faculty of Engnering,Kasetsart Univrsity,Bangkok 10900,Thailand [2]Laboratory of Ecohydrology,Division of Forest Sciences,Department of Agro-enironmental Sciences,Kyushu University,Fukuoka 819-0395,Japan [3]Deparment of Chemicl Enineing and Instite of Global Imovain Rescarch,Tokyo University of Agrcature&Technolo,Tokyo 184-8588,Japan [4]Depatmtent of Civil and Enivonmenal Enincrn Colordo School of Mines,Golde,co 80401,USA

出　　处：《Frontiers of Environmental Science & Engineering》2020年第6期251-263,共13页环境科学与工程前沿（英文）

基　　金：This research study w as financially supported by the National Research Council of Thailand(N R C T)(#105/2563);Faculty of Engineering Kasetsart University,Bangkok,Thailand(Post Doc.62/08.ENV);Kasetsart University Research and Development Institute(KURDI)(#ENV/2563);The authors also thank Ms.Nimaradee Boonapatcharoen and Dr.Somkiet Techkamjanaruk at Pilot Plant Development and Training Institute,King Mongkut's University of Technology Thonburi(Bangkuntien)for giving helpful suggestions on molecular techniques.

摘　　要：The relative locations of AOB,NOB,and DNB were examined for three different kinds of carriers in two types of hybrid bioflm process configurations:integrated fixed-film activated sludge(IFAS)and moving bed bioflm reactor(MBBR)processes.IFAS water resource recovery facilities(WRRFs)used Anodkainess^TM K1 carriers(KC)at Broomfield,Colorado,USA and polypropylene resin crriers(R)at Fukuok,Japa,whic MBBR WRFS used KC crier at South Adams Couty,Colorado,USA and sponge carriers(SC)at Saga,Japan.Influent COD to N ratios ranged from 8:1 to 15:1.The COD and BOD removal efficiencies were high(96%-98%);NH^+4-N and TN removal efficiencies were more varied at 72%98%and 64%-77%,respectively.The extent of TN removal was higher at high SRT,high COD:N ratio and low DO concentration in the anoxic tank.In IFAS,RC with high specific surface area.(SSA)maintained higher AOB population than KC.Sponge carriers with high SSA maintained higher overall bacteria population than KC in MBBR systems.However,the DNB were not more abundant in high SSA crriers.The diversity of AOB,NOB,and DNB was fairly similar in different carriers.Nitrosomonas sp.dominated over Nitrosospira sp.while denitrifying bacteria included Rhodobacter sp.,Sulfuritalea sp.,.Rubrivivax sp:Paracoccus sp..and Pseudomonas sp.The results from this work suggest that high SRT,high.COD:N ratio,low DO concentration in anoxic tanks,and carriers with greater surface area may be recommended for high COD,BOD and TN removal in WRRFs with IFAS and MBBR systerms.

关 键 词：IFAS MBBR Anokaness^TM K1 carrier Polypropylene resin carrier Sponge carrier 

分 类 号：X703[环境科学与工程—环境工程]