• 환경위생공학
• /
• 제16권3호
• /
• pp.28-33
• /
• 2001

Photosynthetic bacteria (PSB), strains IP-4 and IP-6-7 were isolated from nature, and were studied for swine wastewater treatment. It was confirmed that these PSB were very effective for the COD treatment. Growth of those PSB were increased to 4.5 fold in organic-acids (acetate, propionate and butyrate) added medium than cultivation in Lascelles basal medium and the amount of bacteriochlorophyll a were increased to 5 folds. The COD removal rate in swine wastewater using PSB, strains IP-4 and IP6-7 were obtained 91% and 85%, respectively.

• 한국환경보건학회지
• /
• 제26권4호
• /
• pp.15-20
• /
• 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.

• 한국미생물·생명공학회지
• /
• 제27권2호
• /
• pp.166-171
• /
• 1999

This study was conducted to investigate the removal rate of nitrogen and phosphorus, and lipid production from a swine wastewater by Botryococcus braunii UTEX 572 in an outdoor photobioreactor. B. braunii successfully predominated in competition with bacteria and other algae, especially Oscillatoria, which were grown spontaneously in a secondary-treated swine wastewater, under the conditions of incubation temperature at $25^{\circ}C$ and increased inoculum amount at 287mg/l. There was a significant relationship between dry weight of B. braunii and absorbance of culture solution at 680mn(r2=0.967), suggesting that the latter is as good as the former commonly used for the measurement of algal biomass which is considerably time-consuming. The removal rates of COD, TOC, total nitrogen, and total phosphorus from the swine wastewater were 33.2$\pm$2.6% and 32.8$\pm$3.2, respectively, which showing no different between them. These results suggested that the mass cultivation of B. braunii in an outdoor photobioreactor could be used for the advanced treatment of swine wastewater and lipid production.

• 환경기술인
• /
• 통권167호
• /
• pp.50-53
• /
• 2000

The Wastewater from livestock farms shows the high organic concentration which was over 3,000mg/L of BOD concentrationin swine wastewater especially. Also the nitrogen concentration and red tide phenomena with phosphorous. Most of the livestock facilities

• 한국미생물·생명공학회지
• /
• 제27권2호
• /
• pp.153-158
• /
• 1999

This study was conducted to investigate the production of lipid, and removal of nitrogen and phosphorus from swine wastewater by Botryococcus braunii UTEX 572 in a tubular bioreactor. The rate of dry cell weight increase of B. braunii was highest at 20.1mg/l/din a modified Chu 13 medium at $25^{\circ}C$. Under the above conditions, the rate of lipid content increase was also highest at 6.1mg/l/d. The lipid content of B. braunii on a dry weight basis ranged from 30.5 to 34.1% with an average value of 32.3%. When B. braunii was cultured in a secondary-treated swine wastewater diluted to 50% with tap water, the rate of dry cell weight increase was 18.6mg/l/d and the rate of lipid content increase was 6.0mg/l/d. The lipid content ranged from 30.3 to 34.2%. No significant difference was observed between lipid content and growth conditions. The removal rates of nitrogen and phosphorus in swine wastewater were 43.9% and 41.7%, respectively, after 14 days of incubation.

• 한국물환경학회지
• /
• 제18권4호
• /
• pp.365-370
• /
• 2002

This study aims to study the effect of HRT and influent concentration on swine wastewater treatment using UASB(Upflow Anaerobic Sludge Blanket). Sample was separately collected from the piggery farm; urine(liquid part) and solid part to compare their treatment characteristics. Reactors were used two UASB(3.2 L) in this research under constant temperature ($35^{\circ}C$). Their operating conditions were as follows; Run 1(UASB ; HRT 6-days, 1 cycle/d), Run 2(UASB ; HRT 3-days, 1 cycle/d). Biogas was collected and analyzed using GC(HP-6890). By comparing the results of Run 1 and Run 2, the effect of HRT was investigated. The treatment efficiency of Run 1 which had longer HRT was higher than that of Run 2 in both solid and liquid parts of piggery sample. Methane content in collected biogas is more than 80%.

• 한국환경농학회지
• /
• 제19권2호
• /
• pp.177-182
• /
• 2000

토양 미생물을 이용한 고농도 축산폐수의 과부하 처리를 위한 공정개발 연구결과 유기물 제거율은 99%이었다. 상온 혐기조에서 $0.7kg\;BOD/m^3/d$ 이하에서 처리수의 BOD 농도는 150mg/L 이하를 이었다. 상온 혐기조를 운전한 실험에서 후속 폭기조의 물질 대사계수(km)는 $0.73hr^{-1}$, 세포증식계수(Y)는 0.433 g/VSS/g BODrm/d 였으며 중온으로 운전한 경우 후속 폭기조에서 각각 $1.45hr^{-1}$과 0.776 g VSS/g BODrm/d 로 반응계수 값이 두 배에 가깝게 개선되었다.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2010년도 춘계학술대회 초록집
• /
• pp.252.1-252.1
• /
• 2010

These studies convert to useful electricity from swine wastewater and to treat this wastewater. In order to operate the microbial fuel cell(MFC) for the swine wastewater, the anode volume of MFCs was scaled up with 5L in the vacant condition. Graphite felts and low-priced mesh stainless-less as electrode had mixed up and packed into the anode compartment. The meshed stainless-less electrode could also be acted the collector of electron produced by microorganisms in anode. For a cathode compartment, graphite felt loaded Pt/C catalyst was used. Graphite felt electrode embedded in the anode compartment was punched holds at regular intervals to prevent occurred the channeling phenomenon. The sources of seeding on microbial fuel cell was used a mixture of swine wastewater and anaerobic digestion sludge(1:1). It was enriched within 6 days. Swine wastewater was fed with 53.26 ml/min flow rate. The MFCs produced a current of about 17 mA stably used swine wastewater with $3,167{\pm}80mg/L$. The maximum power density and current density was 680 $mW/m^3$ and 3,770 $mA/m^3$, respectively. From these results it is showed that treatment of swine wastewater synchronizes with electricity generation using modified low priced microbial fuel cell.

• 환경위생공학
• /
• 제15권3호
• /
• pp.31-36
• /
• 2000

Conventional membrane systems was difficults to treatment for the swine waste water. Technological advances in membrane filtration systems have created opportunity for the swine wastewater to treat effluent streams in order to meet stricter environmental constraints. "Vibratory Shear Enhanced Processing(VSEP)" developed by new logic international makes it possible to filter effluent streams without the fouling problem exhibited by conventional membrane systems. Various kinds of waste water occurred to and swine wastewater experiment with "VSEP" set up conventional reverse osmosis membrane (ACM-4, ESPA, BW-30). The results were as followes : Treatment efficiency for the input COD(From $332mg/{\ell}$ to $4,968mg/{\ell}$) was 98%. Treatment efficiency for the input SS(From $140mg/{\ell}$ to $4,040mg/{\ell}$) was 100%(All together). Treatment efficiency for the input T-N(From $155mg/{\ell}$ to $934mg/{\ell}$) was 97%~99.8%. Treatment efficiency for the input T-P(From $28.6mg/{\ell}$ to $132mg/{\ell}$) was 99.7% and up. ESPA membrane excels three types of reverse osmosis membranes applied VSEP in removal efficiency.

• 한국미생물·생명공학회지
• /
• 제26권1호
• /
• pp.76-82
• /
• 1998

축산폐수는 과량의 질소와 인을 함유하고 있어서 호소의 부영양화로 수질을 악화시키기 때문에, 본 연구에서는 2차 처리된 돈폐수를 대상으로 조류를 이용하여 폐수 내 질소와 인을 효율적으로 제거하고자 조류의 선별 및 배양의 최적화 실험을 수행하였다. Chlorella vulgaris (UTEX 265), Chlorella sp. GE 21, Botryococcus braunii(UTEX 572), Botryocorcus sp. GE 24, Scenedesmus quadricauda, Phormidium sp. GE 2, 그리고 Spirulina maxima(UTEX 2342)의 7종을 대상으로 조사한 결과 C. vulgaris(UTEX 265)가 질소와 인의 제거 뿐만 아니라 미세조류의 생산량도 우수하였다. 다음 실험에 사용될 미세조류로 선별된 C. vulgaris는 수온 35$^{\circ}C$에서 생장이 가장 좋았으며, 약 알칼리인 초기 pH 8.0에서 생장이 우수하였다. 미세조류의 생산 및 질소와 인의 제거에 있어 광도의 영향을 조사한 결과 40 ${\mu}$E/$m^2$/s 이하에서는 조류의 생장이 억제 받았으나, 그 이상의 광도에서는 비슷한 결과를 얻었다. 시료로 사용된 돈폐수의 질소와 인 농도는 각기 58.7 mg/l와 14.7 mg/l로 조사되었으며, 대상 폐수를 75%(돈폐수:지하수=3:1)로 희석하였을 때 질소와 인의 제거효율과 미세조류의 생산이 우수하였고, 희석하지 않은 경우 lag time은 길어졌으나 점차로 질소와 인이 제거되었다. 본 실험에서 얻어진 최적 조건하에서 25%의 돈폐수를 처리한 결과 4일 후 폐수중의 총질소는 95.3%가 총인은 96.0%가 제거되었다.