• Title/Summary/Keyword: ADEPT

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Efficient Anaerobic Digestion for Highly Concentrated Particulate Organic Wastewater (고농도 입자성 유기폐수의 고효율 혐기성 소화 공정)

  • Lee, Sungbum;Shin, Kyuchul;Kim, Huijoo;Kim, Hyunju;Choi, Changkyoo;Kim, Moonil
    • Journal of the Korean GEO-environmental Society
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    • v.9 no.2
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    • pp.23-29
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    • 2008
  • It has been mentioned that CSTR (Completely Stirred Tank Reactor) and UASB (Upflow Anaerobic Sludge Blanket) processes, the existing anaerobic processes, have problems in the treatment of highly concentrated particulate organic wastewater (HCPOW). Therefore, this paper discusses the treatment possibility of distillery wastewater which is a typical HCPOW using ADEPT (anaerobic Digestion Elutriated Phased Treatment) process. In the comparison of CSTR and ADEPT, ADEPT produced much higher gas than that of CSTR removing more organic matters and suspended solids in ADEPT process, ADEPT had no effect on the decrease in pH by volatile fatty acids and showed steady pH in spite of relatively short HRT. In the results of removal rate according to recycle ratios between 6Qin and 2Qin in ADEPT, 6Qin showed high removal rate during the operation time. Therefore it appears that ADEPT had an applicability for the treatment of distillery wastewater. ADEPT could be a economical process, due to the short HRT, the energy recovery by the methane production, and the utilization for carbon source of produced organic acid from the ADEPT-acid reactor.

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Nitrogen Removal from ADEPT Effluent of Piggery Wastewater using Nitritation/Denitiritation System (ADEPT공정을 거친 돈사폐수의 아질산화-아탈질 공정을 이용한 질소제거)

  • Lee, Hwa-Sun;Min, Kyung-Sok
    • Journal of Korean Society on Water Environment
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    • v.22 no.1
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    • pp.134-139
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    • 2006
  • Partial nitirification and denitrification process has been reported to be technically feasible and economically favorable, especially for wastewater treatment with high ammonium concentration or low Carbon/Nitrogen ratio. This research was performed to survey nitrite accumulation by nitritation in treating ADEPT effluent of piggery wastewater, which contains highly concentrated ammonia. To estimate the possibility of nitrite accumulation, DO concentration and SRT were investigated as key operational parameters. This result proved that nitritation to nitrite was steadily obtained under short sludge retention time. Oxygen limitation was proved to be just a subsidiary parameter. Energy efficiency of nitritation-denitritation process was higher than complete nitrification-denitrification because external carbon requirement for denitritation could be saved. Though the influent contained significant nonbiodegradable organic substrate, total nitrogen removal efficiency was more than 51% in nitritation-denitritation system.

A Proposal of Sequencing the Combined Processes for Resources Recovery and Nitrogen Removal from Piggery Waste (슬러리형 돈사폐수에서 자원회수와 질소제거를 위한 순차적 결합공정 제안)

  • Hwang, In-Su;Min, Kyung-Sok;Bae, Jin-Yeon
    • Journal of Korean Society of Environmental Engineers
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    • v.28 no.1
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    • pp.61-66
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    • 2006
  • The combined ADEPT(Anaerobic Digestion Elutriated Phased Treatment)-SHARON(Single reactor system for High Ammonium Removal Over nitrite)-ANAMMOX(Anaerobic ammonium oxidation) processes were operated for resources recovery and nitrogen removal from slurry-type piggery waste. The ADEPT process operated at an acidogenic loading rates of 3.95 gSCOD/L-day, the SCOD elutriation rate and acid production rate were 5.3 gSCOD/L-day and 3.3 gVFAs(as COD)/L-day, respectively. VS reduction and SCOD reduction by the hydrolysis were 13% and 0.19 $gSCOD_{prod.}/gVS_{feeding}$, respcetively. Also, the acid production rate was 0.80 $gVFAs/gSCOD_{prod}$. In methanogenic reactor, the gas production rate and methane content were 2.8 L/day($0.3m^3CH_4/kgCOD_{removal}@STP$) and 77%, respectively. With these operating condition, the removals of nitrogen and phosphorus were 94.1% as $NH_4-N$(86.5% as TKN) and 87.3% as T-P respectively.

"Ascending to Heaven and Becoming an Immortal": Sublime Words with Deep Meaning and Ultimate Value in Daoist Culture (道文化终极价值的文字学阐释: 兼论「大巡」「道通真境」之人文意涵)

  • Zeng, Yong
    • Journal of the Daesoon Academy of Sciences
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    • v.34
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    • pp.293-321
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    • 2020
  • The value embodied by "Ascending to Heaven and Being an Immortal" (Yuhua Dengxian in Chinese) implies the core gist of Daoist culture as well as its ultimate value. From the perspective of Philology, each word, "Yu", "Hua", "Deng", and "Xian" benefits us through a philosophy of life, learning skills, the pursuit of the mysteries of Daoist immortality, and the ways of life characteristics and spiritual transcendence. "To become an immortal" is becoming adept at life. "Yuhua" refers to learning transcendental skills, and "Deng" expresses the promotion of life. "Ascending to Heaven and Becoming an Immortal" integrates the goal- oriented values of Daoist Culture, learning transcendental skills, and the state of being alive into a unified whole. Namely, it is the perfect combination of an adept's supreme pursuit of value and zenith of life. By way of contrast, in Daesoon Jinrihoe, the concepts of "Daesoon" and "Perfected Unification with the Dao" not only advocate "physical and mental transformation" and "spiritual development" for Dao cohorts, but also personal cultivation and service to society, and participation in "The Creation of an Earthly Paradise." These are unified under the ideal humanistic value of "the earthly paradise of the Later World."

Development of Industrial High-Speed Transfer Parallel Robot (산업용 고속 이송 병렬 로봇 개발)

  • Kim, Byung In;Kyung, Jin Ho;Do, Hyun Min;Jo, Sang Hyun
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.37 no.8
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    • pp.1043-1050
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    • 2013
  • Parallel robots used in industry require high stiffness or high speed because of their structural characteristics. Nowadays, the importance of rapid transportation has increased in the distribution industry. In this light, an industrial parallel robot has been developed for high-speed transfer. The developed parallel robot can handle a maximum payload of 3 kg. For a payload of 0.1 kg, the trajectory cycle time is 0.3 s (come and go), and the maximum velocity is 4.5 m/s (pick amp, place work, adept cycle). In this motion, its maximum acceleration is very high and reaches approximately 13g. In this paper, the design, analysis, and performance test results of the developed parallel robot system are introduced.

Partial Nitrification of Wastewater with Strong N for Anaerobic Nitrogen Removal (혐기성 질소제거를 위한 고농도 질소폐수의 부분질산화)

  • Hwang, In-Su;Min, Kyung-Sok
    • Journal of Korean Society of Environmental Engineers
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    • v.28 no.4
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    • pp.414-420
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    • 2006
  • Effluent from an anaerobic digestion system with an elutriated phased treatment(ADEPT, Anaeorbic Digestion Elutriated Phase Treatment) for piggery waste treatment using anaerobic ammonium oxidation(ANAMMOX) process was used as a substrate of partial nitrification reactor. In mesophilic condition($35^{\circ}C$), controlling parameters of nitrite accumulation were HRT, pH, free ammonia(FA) and hydroxylamine rather than dissolved oxygen. Bicarbonate alkalinity consumption ratio including bicarbonate stripping and buffering was 8.78 g $Alk._{comsumed}/g\;NH_4-N_{converted}$. In steady state for 1 day of HRT and $2.7{\sim}4.4mg/L$ of DO, $NO_2-N/NH_4-N$ ratio of partial nitrification effluent was about $1{\sim}3$, which was applicable to ANAMMOX reactor influent for the combined partial nitrification-ANAMMOX process.

The Mathematic Model of “Pressing Complexion”Differential Coefficient Countermeasure Decision for Collision-avoidance

  • Cai, Feng;Shi, Aiguo;Yang, Baozhang;Zhou, Lixin
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2001.10a
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    • pp.81-87
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    • 2001
  • In this article, we have done some analysis about the collision-avoidance specialty of “pressing complexion” and “pressing danger”in the meet process of two boats, and offered a mathematic model of differential coefficient countermeasure decision for collision-avoidance, which adapt to the right complexion. The basal idea is, in the right condition whatever do the coming boat do, and our boat will always adept dynamic, continuous and the best countermeasure. When both the controlling capabilities of two boats have advantage and inferior position, we can working-out with the qualitative differential coefficient countermeasure.

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A Study on the Development of Purchasing Decision Model by Image of Product - A Fuzzy Rule Based Analysis- (퍼지를 이용한 제품 이미지에 따른 구매결정모형에 개발에 관한 연구)

  • Park, Sang-June;Cho, Jai-Rip
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2004.05a
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    • pp.86-91
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    • 2004
  • As many organizations are searching for ways to compete more effectively in today's market environment. Image of Product is become the most important fact to improve their competition. The objectives of this paper are to provide an overview of PDM(Purchasing Decision Factor) and to discuss how to measure it more efficiently. This study develops a conceptual 'relation model of the purchasing decision factor', which identifies only performance based measurement, and proposes Fuzzy Measuring Method which uses the Fuzzy rule based algorithm to adept survey to date sets.

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A real-time vision system for SMT automation

  • Hwang, Shin-Hwan;Kim, Dong-Sik;Yun, Il-Dong;Choi, Jin-Woo;Lee, Sang-Uk;Choi, Jong-Soo
    • 제어로봇시스템학회:학술대회논문집
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    • 1990.10b
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    • pp.923-928
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    • 1990
  • This paper describes the design and implementation of a real-time, high-precision vision system and its application to SMT(surface mounting technology) automation. The vision system employs a 32 bit MC68030 as a main processor, and consists of image acquisition unit. DSP56001 DSP based vision processor, and several algorithmically dedicated hardware modules. The image acquisition unit provides 512*480*8 bit image for high-precision vision tasks. The DSP vision processor and hardware modules, such as histogram extractor and feature extractor, are designed for a real-time excution of vision algorithms. Especially, the implementation of multi-processing architecture based on DSP vision processors allows us to employ more sophisticated and flexible vision algorithms for real-time operation. The developed vision system is combined with an Adept Robot system to form a complete SMD system. It has been found that the vision guided SMD assembly system is able to provide a satisfactory performance for SND automation.

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