• Title/Summary/Keyword: Phosphorus Removal

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A Study on the Biological Organic, Nitrogen and Phosphorus Removal in Sequencing Batch Biofilm Reactor (연속회분식 생물막 반응기(Sequencing Batch Biofilm Reactor)를 이용한 수중의 유기물, 질소 및 인의 동시 제거에 관한 연구)

  • 박민정;김동석
    • Journal of Environmental Health Sciences
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    • v.30 no.2
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    • pp.84-91
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    • 2004
  • Biological nutrient removal(BNR) from wastewater was performed by adopting various process configurations. The simultaneous biological organics, phosphorus and nitrogen removal of synthetic wastewater was investigated in a sequencing batch biofilm reactor (SBBR). The other reactor was operating as a reference, without biofilm being added. The cycling time in SBR and SBBR was adjusted at 12 hours and then certainly included anaerobic and aerobic conditions. Both systems has been operated with a stable total organic carbon(TOC), nitrogen and phosphorus removal performance for over 90 days. Average removal efficiencies of TOC and total nitrogen were 83% and 95%, respectively. The nitrification rate in SBR was higher than that in SBBR. On the contrary, the denitrification rate in SBBR was higher than that in SBR. The phosphorus release was occurred in SBBR, however, not in SBR because of the inhibition effect of NO$_3$$^{[-10]}$ .

Biological Removal Phosphorus Containing Swine Wastewater (생물학적 처리에 의한 돈사폐수의 인제거)

  • 신남철;박정호
    • Journal of Environmental Health Sciences
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    • v.26 no.4
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    • pp.15-20
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    • 2000
  • The studies of swine wastewater treatment aim to development of process using soil microorganism. Removal rate of swine wastewater containing organic matter was 99 percent in case of high loading rate. Microorganism was devoted to improve the treatment efficiency of the process. According to the result obtained from biological treatment of high loading rate swine wastewater. Hydraulic retention time was 2.3 days in unit process of biological phosphorus removal. BO $D_{rm}$ / $P_{rm}$ ratio was 1122 in room temperature anaerobic process and 355.6 in mesophilic anaerobic process. And then phosphorus removal rate mesophilic anaerobic process was 3 time as much as than room temperature acaerobic process.

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생물학적 인 제거용 연속회분식 반응기에서의 미생물 분포 조사

  • Jeon, Che-Ok;Park, Jong-Mun
    • 한국생물공학회:학술대회논문집
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    • 2000.11a
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    • pp.77-80
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    • 2000
  • Various analytical methods such as electron microscopy, quinone analysis, and 16S rDNA sequencing studies were used to investigate the microbial communities and to identify the microorganisms responsible for enhanced biological phosphorus removal (EBPR) in an anaerobic/aerobic sequencing batch reactor (SBR) fed with acetate. Electron photomicrographs showed that oval-shaped microorganisms of about $0.7\;{\sim}\;1\;{\mu}m$ in diameter dominated the microbial sludge. These microorganisms contained polyphosphate granules and glycogen inclusions, which suggests that they are a kind of phosphorus accumulating organism. Quinone and 16S rRNA sequence analyses showed that the members of Proteobacteria beta subclass were the most abundant species, which were affiliated with the Rhodocyclus-likes group. Phylogenetic analysis revealed that the two dominating clones of the beta subclass were most distantly related to Propionivibrio dicarboxylicus DSM 5885 and Rhodocyclus tenuis DSM 109 with about 95% and 96% sequence similarity, respectively. Therefore, it was concluded that the oval-shaped organisms related to the Rhodocyclus-likes group are likely to be responsible for biological phosphorus removal in SBR operation supplied with acetate.

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Removal of Phosphorus in Aerobic Fixed Biofilm Reactor (호기성 고정생물막 반응조에서 인의 제거)

  • Rim, Jay-Myoung;Han, Dong-Joon;Woo, Young-Gug
    • Journal of Industrial Technology
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    • v.16
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    • pp.5-11
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    • 1996
  • While the enhanced biological phosphorus removal(EBPR), in anaerobic/aerobic condition, was known to remove phosphorus by means of metabolism of poly-P microorganisms, the phosphorus removed could be released in the form of ortho-P in the aerobic fixed biofilm reactor. This study was initiated to investigate the cause of ortho-P release in the aerobic fixed biofilm reactor. The resutls indicated that the phosphorus release was caused by autooxidation. The synthesis and release of phosphrous were related to the ORP and the boundary value for the phase change was about 170mV. In the synthesis phase, the phosphorus removal rate per COD removed was $0.023mgP_{syn}/mgCOD_{rem}$. The phosprous contents of the microorganism were 4.3 ~ 6.0% on a dry weight basis.

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Characteristics of Phosphorus Adsorption on Titanium Meso-structure Synthesized under Various Conditions of Surfactant (계면활성제의 다양한 조건에서 합성된 티타늄 메조구조체를 이용한 수중의 인 흡착 특성 연구)

  • Choi, Jae-Woo;Choi, Ji-Youn;Lee, Seung-Yeon;Lee, Sang-Hyup
    • Journal of Korean Society of Water and Wastewater
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    • v.24 no.4
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    • pp.413-423
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    • 2010
  • Eutrophication caused by the excessive supply of phosphorus to water has been considered as one of the most important environmental problems. In this study, the titanium mesostrcture, which was prepared with the template of different surfactant, was tested to confirm the applicability as an adsorbent for phosphorus removal and evaluate the phosphorus removal efficiency. X-ray diffraction analysis, phosphorus adsorption istotherm and kinetic test were performed for the titanium mesostructure, synthesized at various base material/surfactant molar ratio and with different surfactant templates. From the results, we found that mesostructure was synthesized at the base material/surfactant molar ratio of 1/0.25 was most uniformly and clearly formed and thus the adsorption capacity was also maximized.

Phosphorous Removal from Synthetic Wastewater Using a Continuous Flow Column Packed with Waste Lime Core (부산석회 Core로 충진된 연속식 칼럼을 이용한 인공폐수 내 인제거)

  • Lee Eui-Sang
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.7 no.4
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    • pp.709-714
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    • 2006
  • The propose of this study was to investigate the feasibility of using waste lime core to remove phosphorus from wastewater in continuous flow reaction. The phosphorus was found to be removed from municipal wastewater by hydroxyapatite crystallization and precipation. Waste lime core size 1, 2 showed phosphorus removal rate of about 90% during early 11 hrs of run time. In addition, breakpoint time was decreased by increased inflow rate regardless of waste lime core size.

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Operation and Modeling of Bench-Scale SBR for Simultaneous Removal of Nitrogen and Phosphorus Using Real Wastewater

  • Lim, Seong-Jin;Moon, Ra-Kyung;Lee, Woo-Gi;Sunhoon Kwon;Park, Byung-Geon;Chang, Ho-Nam
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.5 no.6
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    • pp.441-448
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    • 2000
  • Experimental work was carried out on nitrogen and phosphorus removal from real wastewater using a bench-scale SBR process. The phosphorus removal was stable and the phosphorus concentration remaining in the reactor was maintained within 1.5ppm, regardless of the addition of an external carbon source. In the case of nitrogen, an external carbon source was necessary for denitrification. The effect on denitrification with the addition of various carbon sources, such as glucose, methanol, acetate, and propionate, was also investigated. Acetate was found to be the most effective among those tested in this study. When 100ppm (theoretical oxygen demand) of sodium acetate was added, the average rate of denitrifiaction was 2.73mg NO$_3$-N (g MLSS)(sup)-1 h(sup)-1, which was ca. 4 times higher than that with the addition of 200 ppm of methanol. The phosphorus and nitrogen concentrations were both maintained within 1.5ppm by the addition of an appropriate amount of a carbon source during a long-term operation of the SBR. The mathematical modeling was performed using Monod kinetics, other microbial kinetics, mass balances, and stoichiometry. The modeling was found to be useful for predicting the SBR operation and optimizing the HRT.

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