http://hdl.handle.net/10125/1917 Fri, 24 May 2013 10:42:31 GMT 2013-05-24T10:42:31Z http://hdl.handle.net/10125/20422 Thesis (M.S.)--University of Hawaii at Manoa, 2007.; Includes bibliographical references (leaves 127-136).; x, 136 leaves, bound ill. 29 cm Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10125/20422 2007-01-01T00:00:00Z Kang, Hsu-Ya http://hdl.handle.net/10125/20421 Thesis (M.S.)--University of Hawaii at Manoa, 2007.; Includes bibliographical references (leaves 121-127).; xiv, 127 leaves, bound ill. 29 cm Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10125/20421 2007-01-01T00:00:00Z Lin, Luo-Ting http://hdl.handle.net/10125/20420 Thesis (M.S.)--University of Hawaii at Manoa, 2007.; Includes bibliographical references (leaves 50-51).; viii, 51 leaves, bound ill. (some col.) 29 cm Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10125/20420 2007-01-01T00:00:00Z Andrews-Shigaki, Brian C http://hdl.handle.net/10125/20419 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references (leaves 127-132).; xvi, 132 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20419 2006-01-01T00:00:00Z Zhu, Jia, 1977 http://hdl.handle.net/10125/20418 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references (leaves 179-186).; xix, 215 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20418 2006-01-01T00:00:00Z Kongsil, Piyalerg http://hdl.handle.net/10125/20417 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references (leaves 69-72).; vii, 89 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20417 2006-01-01T00:00:00Z Douette, Aurelien M. D http://hdl.handle.net/10125/20416 Thesis (M.S.)--University of Hawaii at Manoa, 2007.; Includes bibliographical references (leaves 93-106).; iv, 106 leaves, bound 29 cm Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10125/20416 2007-01-01T00:00:00Z Xu, Zhe http://hdl.handle.net/10125/10397 Mon, 01 Aug 2005 00:00:00 GMT http://hdl.handle.net/10125/10397 2005-08-01T00:00:00Z Koppar, Abhay http://hdl.handle.net/10125/10396 Mon, 01 Aug 2005 00:00:00 GMT http://hdl.handle.net/10125/10396 2005-08-01T00:00:00Z Reis, Carlospeloi Dos http://hdl.handle.net/10125/10395 Wed, 01 Dec 2004 00:00:00 GMT http://hdl.handle.net/10125/10395 2004-12-01T00:00:00Z Tsang, Shuki http://hdl.handle.net/10125/10394 Wed, 01 Dec 2004 00:00:00 GMT http://hdl.handle.net/10125/10394 2004-12-01T00:00:00Z Rivera, Gwendolyn Leialoha Cheney http://hdl.handle.net/10125/10393 Wed, 01 Dec 2004 00:00:00 GMT http://hdl.handle.net/10125/10393 2004-12-01T00:00:00Z Liu, Kan http://hdl.handle.net/10125/10392 Wed, 01 Dec 2004 00:00:00 GMT http://hdl.handle.net/10125/10392 2004-12-01T00:00:00Z Ahn, Sun Young http://hdl.handle.net/10125/7013 To meet more strict standards than before for wastewater discharge and reuse criteria, a post-treatment for the secondarily treated effluent needs to be followed. This means not only additional cost, but a more complicated design and operation for a tertiary treatment is involved. Therefore, an evaluation of the characteristics, such as concentration, molecular weight distribution (MWD) and composition of residual soluble COD from a secondary treatment process is required. In this work, a conventional activated sludge process (ASP) and entrapped-mixed-microbial cell (EMMC) process (fluidized-bed and packed) were investigated. The investigation of the system performance shows: at the operation of 1 hr aeration/1 hr non-aeration with HRT 16.5 hr, all of the reactors had> 95% of COD removal and > 66% of nitrogen removal for treating high-strength synthetic wastewater (COD ~ 700 mg/l); at the operation of 1 hr aeration/1 hr non-aeration with HRT 6 hr, the EMMC reactors had> 93% COD removal and > 45% nitrogen removal for low strength synthetic wastewater (COD ~ 200 mg/l), while the ASP reactor had > 93% COD removal and 26.6% nitrogen removal at continuous aeration with HRT 6hr. Due to the longer SRT (solid retention time) for EMMC process, the MWD patterns and composition of the residual soluble COD (RSCOD) for the treated effluent of the EMMC are different from those of ASP when operated under the same HRT and aeration time. The study on the MWD shows the change of HRT, aeration and OLR cause different patterns for the RSCOD of the treated effluents from the same reactor. The experiment indicates that the effluent of the EMMC is more suitable to be treated physical-chemically than biologically in tertiary treatment, because it has more biologically stabilized components produced than that of the ASP process. Further biological oxygen demand for this stabilized effluent is apparently not required. The accomplishment of this work will provide a guideline for the requirement and design of a unit process for tertiary treatment. xiv, 98 leaves Fri, 01 Aug 2003 00:00:00 GMT http://hdl.handle.net/10125/7013 2003-08-01T00:00:00Z Song, Chenyan http://hdl.handle.net/10125/6997 Milk parlor wastewater in a dairy operation in Hawaii was investigated for its potential treatment and reuse. Two earthen settling ponds were served as settling process and another 10 acres of wetland were planted with California grass to receive the effluent from settling ponds. It was found that the present treatment systems still remained many problems, such as odor, potential groundwater contamination and surface water pollution. The effluent could not meet the requirements for either disposal or reuse. Improving and integrating other cost effective biological treatment component(s) to the existing lagoons is required in order to meet discharge or reuse standards. Several biological treatment technologies were evaluated and investigated as the alternatives. In order to improve these existed problems, a 5-S approach (system existed, short HRT, small investment, simple operation and maintenance, system thinking) is developed. Among the 5-S, development of a higher SRT (Solids Retention Time) for the bioreactor is essential in order to integrate this unit into the other 4-S. A bioreactor, which is the modification of UASB (Upflow Anaerobic Sludge Blanket) reactor, was investigated. It was found that more than 70-75% of TCOD (Total Chemical Oxygen Demand) removal efficiency and biogas production of 1.5l/l/day with CH4 content of 70-75% could be achieved at 8-15g COD/l/day. The unique operation of the developed bio-nest reactor is able to achieve a higher COD removal efficiency with high organic loading rate with simple design and operation. This unique bioreactor is able to provide better sludge distribution and less dead zone compared to the conventional UASB. The process performance, design and operation criteria of this bioreactor were presented, discussed and compared with the existing anaerobic filter reactor and UASB reactor for the treatment of milk parlor wastewater. It was found that this bioreactor is able to operate in the temperature of 22± 2°C compared to others (35 °C with high COD removal efficiency and biogas production. Thus, it can be easily integrated into the existing lagoon system (popularly in the United States) or integrated to the aerobic/intermittent aerobic treatment unit for further removal of carbon and nitrogen in order to be able to dispose, discharge or reuse. Based on the laboratory results and field investigation, a treatment and reuse systems is proposed to improve one of the existing milk parlor wastewater management system. ix, 62 leaves Fri, 01 Aug 2003 00:00:00 GMT http://hdl.handle.net/10125/6997 2003-08-01T00:00:00Z Dong, Liangjie