• 제목/요약/키워드: Piggery wastewater

검색결과 68건 처리시간 0.034초

SRT와 온도 변화를 통한 돈사폐수 내 고농도 암모니아의 아질산화 평가 (Evaluation of Nitritation of High Strength Ammonia with Variation of SRT and Temperature using Piggery Wastewater)

  • 임지열;길경익
    • 한국물환경학회지
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    • 제27권5호
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    • pp.563-571
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    • 2011
  • The purpose of this study is to investigate the high strength ammonia oxidation of piggery wastewater. Laboratory scale reactors was operated using influent of piggery wastewater and effluent of anaerobic digester from piggery wastewater at $35^{\circ}C$ and $20^{\circ}C$. Results of various operating conditions were compared and analyzed. After analyzing the results, effluent of anaerobic digester from piggery wastewater required shorter Solid retention time (SRT) than influent of piggery wastewater. In terms of the temperature, stable ammonia removal and denitrification was achieved on the both of the condition. At the temperature of $35^{\circ}C$, nitrite conversion rate was better than $20^{\circ}C$. It can be concluded that treating the piggery wastewater using anaerobic digester on the condition of the temperature at $35^{\circ}C$ is more efficient on the nitritation of the piggery wastewater.

내부탄소원을 이용한 돈사폐수의 탈질화 (Denitrification of Piggery Wastewater by Internal Carbon Source)

  • 임재명;한동준;우영국
    • 산업기술연구
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    • 제16권
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    • pp.13-24
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    • 1996
  • This research aims to investigate the effects of an internal carbon source in the denitrification of piggery wastewater. In this study, the raw wastewater and the effluent from each of anoxic basin and anaerobic basin were used as the internal carbon sources. The experiments were carried out in batch system and the results are as follows ; i) Denitrification rates were the highest in the raw wastewater and the lowest in the anaerobic effluent. ii) The piggery wastewater contained about 60 percent of the readily biodegradable organic(RDCOD), which led to a conclusion that the raw wastewater could be used as the internal carbon source for the denitrification. For the efficient denitrification, pre-denitrification process was found profitable. iii) In denitrification, alkalinity production rates were in the range of 3.4 to $3.6mgCaCO_3/mgNO_3-N$. iv) The denitritation of piggery wastewater came out to be possible, and the rate of organic carbon consumption decreased about 10 percent.

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생물학적 영양염류 제거를 위한 돈사폐수의 반응 특성 (Reaction Characteristics of Piggery Wastewater for Biological Nutrient Removal)

  • 한동준;류재근;임연택;임재명
    • 환경위생공학
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    • 제13권1호
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    • pp.44-56
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    • 1998
  • This study was performed to investigate the reaction characteristics of piggery wastewater for biological nutrient removal. The reaction characteristics were discussed the fraction of organics, the behavior of nitrogen, nitrification, denitrification, and the behavior of phosphorus. The fraction of readily biodegradable soluble COD was 11-12 percent. The ammonia nitrogen was removed via stripping, nitrification, autotrophic cell synthesis, and heterotrophic cell synthesis. The removal percents by each step were 12.1%, 68.9%, 15.0%, and 4.0%, respectively. Nitrification inhibition of piggery wastewater was found to occur at an influent volumetric loading rate over 0.2 NH$_{3}$-N kg/m$^{3}$/d. Denitrification rates were the highest in the raw wastewater and the lowest in the anaerobic effluent. The denitritation of piggery wastewater came out to be possible, and the rate of organic carbon consumption decreased about 10 percent. The phosphorus removed was released in the form of ortho-p in the aerobic fixed biofilm reactor, it was caused by autooxidation. The synthesis and release of phosphorus 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 phosphorus contents of the microorganism were 4.3-6.0% on a dry weight basis.

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슬러리형 돈사분뇨처리를 위한 초임계수 산화공정의 최적 조건 (Optimum Conditions of Super-critical Water Oxidation Process for Treatment of Slurry Piggery Wastewater)

  • 김은호;서정윤
    • 한국환경보건학회지
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    • 제34권4호
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    • pp.333-341
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    • 2008
  • In this study, the possibility and the optimal conditions for treating slurry type piggery wastewater using supercritical water oxidation were tested in the laboratory. The results could be summarized as follows; The slurry type piggery wastewater, which was diluted 50 times, was treated most effectively at the pressure of 300 bar, the temperature of $550^{\circ}C$ and the residence time of 10 minutes. The air saturated water was injected, as an oxidizing agent, and the removal efficiencies of $COD_{Cr}$, T-N, $NH_4^+$-N and T-Pattheoptimal conditions were 92, 40, 59 and 100%, respectively. Therefore, analte rnativemea suremu stbetaken to improve theremo valefficiency of the nitrogen compounds.

축산물에 사용되는 항생제가 축산폐수의 처리효율에 미치는 영향 (A study on The Effect of Antibiotics Usage too The Efficiency of Biological Piggery Wastewater Treatment)

  • 조미경;트안트란홍;김대희;지아유홍;오세진;안대희
    • 유기물자원화
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    • 제15권1호
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    • pp.123-133
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    • 2007
  • 항생제 사용의 증가와 무분별한 사용으로 인한 항생제 오남용은 항생제 내성균 증가와 더불어 미생물 종의 변화 및 수질환경에 독성물질로써 작용할 수 있다. 특히 항생제는 생물학적 폐수처리 공정에서 미생물에 의한 하 폐수 처리의 효율성 문제를 가져올 수 있다. 본 연구에서는 축산업에서 가장 많이 사용되는 항생제로 조사된 Oxytetracycline(OTC) 항생제가 축산폐수의 생물학적 처리과정에서 질산화와 유기물 제거효율에 미치는 영향을 살펴보았다. 항생제가 축산폐수의 처리효율에 미치는 영향을 살펴보기 위해서 회분식 시험과 $A_2/O$(Anoxic-Anoxic-Oxic) 시스템을 이용하였다. 향후 항생제를 다량 함유하고 있는 축산폐수를 처리할 수 있는 축산폐수처리시스템에 대해서 연구하고자 한다.

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Growth and nutrient removal of Chlorella vulgaris in ammonia-reduced raw and anaerobically-digested piggery wastewaters

  • Kwon, Gyutae;Nam, Ji-Hyun;Kim, Dong-Min;Song, Chulwoo;Jahng, Deokjin
    • Environmental Engineering Research
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    • 제25권2호
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    • pp.135-146
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    • 2020
  • This study was aimed to investigate the possibility of using raw and anaerobically-digested piggery wastewater as culture media for a green microalga Chlorella vulgaris (C. vulgaris). Due to high concentration of ammonia and dark color, the microalga did not grow well in this wastewater. In order to solve this problem, air stripping and NaOCl-treatment were applied to reduce the concentration of NH3-N and the color intensity from the wastewater. Algal growth was monitored in terms of specific growth rate, biomass productivity, and nutrient removal efficiency. As a result, C. vulgaris grew without any sign of inhibition in air-stripped and 10-folds diluted anaerobically-digested piggery wastewater with enhanced biomass productivity of 0.57 g/L·d and nutrient removal of 98.7-99.8% for NH3-N and 41.0-62.5% for total phosphorus. However, NaOCl-treatment showed no significant effect on growth of C. vulgaris, although dark color was removed greatly. Interestingly, despite that the soluble organic concentration after air stripping was still high, the biomass productivity was 4.4 times higher than BG-11. Moreover, air stripping was identically effective for raw piggery wastewater as for anaerobic digestate. Therefore, it was concluded that air stripping was a very effective method for culturing microalgae and removing nutrients from raw and anaerobically-digested piggery wastewaters.

Hydrocarbon production and nitrogen/phosphorus removal from piggery wastewater by cultivation of Botryococcus braunii

  • 심상준;안진영;공경택;김병우;박태현
    • 한국생물공학회:학술대회논문집
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    • 한국생물공학회 2001년도 추계학술발표대회
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    • pp.249-252
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    • 2001
  • 본 연구에서는 축산폐수를 이용하여 건조질량의 $15{\sim}75$ %의 탄화수소를 생산한다고 알려진 B. braunii 배양에 적용하였다. 질소원이 부족한 상황에서 세포의 성장이 나 탄화수소의 생산은 저해를 받았으며, 초기 인의 농도는 질소원이 결핍된 상황을 제외하고는 세포 성장이나 탄화수소의 생산에 큰 영향을 미치지 못했다. 축산폐수를 이용한 설험에서는 33 %의 축산폐수가 nitrate를 제거시키는데 가장 적절하였다.

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양돈폐수의 영양염류 제거를 위한 녹조류 Chlorella vulgaris 성장 모형의 비교 (Comparison of Models to Describe Growth of Green Algae Chlorella vulgaris for Nutrient Removal from Piggery Wastewater)

  • 임병란;주티담롱판;박기영
    • 한국농공학회논문집
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    • 제52권6호
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    • pp.19-26
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    • 2010
  • Batch experiments were conducted to investigate growth and nutrient removal performance of microalgae Chlorella vulgaris by using piggery wastewater in different concentration of pollutants and the common growth models (logistic, Gompertz and Richards) were applied to compare microalgal growth parameters. Removal of nitrogen (N) and phosphorus (P) by Chlorella vulgaris showed correlation with biomass increase, implying nutrient uptake coupled with microalgae growth. The higher the levels of suspended solids (SS), COD and ammonia nitrogen were in the wastewater, the worse growth of Chlorella vulgaris was observed, showing the occurrence of growth inhibition in higher concentration of those pollutants. The growth parameters were estimated by non-linear regression of three growth curves for comparative analyses. Determination of growth parameters were more accurate with population as a variable than the logarithm of population in terms of R square. Richards model represented better fit comparing with logistic and Gompertz model. However, Richards model showed some complexity and sensitivity in calculation. In the cases tested, both logistic and Gompertz equation were proper to describe the growth of microalgae on piggery wastewater as well as easy to application.

축산폐수성상에 따른 SBR 처리특성 (The Characteristics of SBR Treatment with Different Types of Piggery Wastewater)

  • 전병희;부경민;김양훈;임정훈;김창원
    • 한국물환경학회지
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    • 제18권4호
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    • pp.435-440
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    • 2002
  • A pilot scale SBR (effective volume, $20m^3$) for the treatment of piggery wastewater treatment was performed with three different kinds of wastewater; fermenter effluent, scraper type and slurry type. The react phase in SBR was performed by sub-cycle operation consisting of repeated short cycle of anoxic-aerobic step. The fermenter effluent was characterized by the rapid nitrification and $NO_X-N$ accumulation due to depletion of organic matter in wastewater. The scraper type wastewater showed appropriate nitrogen removal efficiency, however, a poor response capacity for high loading rate often resulted in increased nitrogen concentration in effluent. Moreover, severe P release was the most serious problem in scraper type wastewater. SBR treated slurry type wastewater with high nitrogen removal efficiency to satisfy effluent quality requirement. It was thought that high concentration of organic matter in slurry made it possible to uptake P during SBR operation, where P concentration of 140mgP/l was decreased to 8mgP/l. As results, SBR was suitable to treat slurry type wastewater which has been discharged to the ocean till now.

생물막 반응조에서 돈사폐수의 유기물 특성 및 동력학계수 산정 (Organic Characteristic of Piggery Wastewater and Kinetic Estimation in Biofilm Reactor)

  • 임재명;한동준;권재혁
    • 산업기술연구
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    • 제16권
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    • pp.51-60
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    • 1996
  • This research was performed for the fundamental data using a advanced treatment process of piggery wastewater. Characteristics of influent wastewater was divided with various methods in fixed biofilm batch reasctor. Fractons of organic were divided into readily biodegradable soluble COD(Ss), slowly biodegradable COD(Xs), nonbiodegradable soluble COD($S_I$), and nonbiodegradable suspended COD($X_I$). Experimental results were summerized as following : i) biodegradable organics fraction in piggery wastewater was about 88.1 percent, and fraction of readily biodegradable soluble COD was about 66.1 percent. ii) Fractions of nonbiodegradable soluble COD was 11~12 percent, and soluble inert COD by metabolism was producted about 6~8 percent. iii) Active biomass fraction of attached biofilm was about 54.7 percent, and substrate utilization rate and maximum specific growth rate of heterotrophs were $8.315d^{-1}$ and $3.823d^{-1}$, respectively.

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