高校化学工程学报
高校化學工程學報
고교화학공정학보
JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES
2015年
2期
457-463
,共7页
朱红威%陶秀祥%冷云伟%邵菊芳
硃紅威%陶秀祥%冷雲偉%邵菊芳
주홍위%도수상%랭운위%소국방
煤矿乏风瓦斯%甲烷氧化菌%生物滴滤塔%CH 4生物净化
煤礦乏風瓦斯%甲烷氧化菌%生物滴濾塔%CH 4生物淨化
매광핍풍와사%갑완양화균%생물적려탑%CH 4생물정화
coal mine ventilation are methane%methanotrophic bacteria%biotrickling filter%biofiltration methane
研究了氮源类型和浓度以及磷元素浓度对生物滴滤塔净化极低浓度CH 4的影响。利用空气和高纯CH 4混合气模拟煤矿乏风瓦斯，生物滴滤塔填料为陶瓷鲍尔环，以实验室分离筛选到的甲烷氧化菌进行接种挂膜。结果表明，进气流量为2 L?min?1，喷淋液流量为0.1 L?min?1，进气CH4浓度在0.1%~1.1%，以NaNO3为氮源时，生物滴滤塔净化CH4的效果最好，优于(NH4)2SO4和NH4NO3为氮源时的表现。喷淋液中NaNO3浓度为70 mmol?L?1，进气CH4浓度为0.1%~1.1%时，生物滴滤塔的CH4去除负荷为10.67~39.72 g?m?3?h?1，去除负荷随CH4浓度增加而增加；CH4净化率为97.92%~39.70%，净化率随CH4浓度增加而下降。在最佳氮源条件下，进气CH4浓度为0.9%，P元素浓度为100 mmol?L?1时，滴滤塔CH4去除负荷最大为49.69 g?m?3?h?1，CH4净化率60.90%。
研究瞭氮源類型和濃度以及燐元素濃度對生物滴濾塔淨化極低濃度CH 4的影響。利用空氣和高純CH 4混閤氣模擬煤礦乏風瓦斯，生物滴濾塔填料為陶瓷鮑爾環，以實驗室分離篩選到的甲烷氧化菌進行接種掛膜。結果錶明，進氣流量為2 L?min?1，噴淋液流量為0.1 L?min?1，進氣CH4濃度在0.1%~1.1%，以NaNO3為氮源時，生物滴濾塔淨化CH4的效果最好，優于(NH4)2SO4和NH4NO3為氮源時的錶現。噴淋液中NaNO3濃度為70 mmol?L?1，進氣CH4濃度為0.1%~1.1%時，生物滴濾塔的CH4去除負荷為10.67~39.72 g?m?3?h?1，去除負荷隨CH4濃度增加而增加；CH4淨化率為97.92%~39.70%，淨化率隨CH4濃度增加而下降。在最佳氮源條件下，進氣CH4濃度為0.9%，P元素濃度為100 mmol?L?1時，滴濾塔CH4去除負荷最大為49.69 g?m?3?h?1，CH4淨化率60.90%。
연구료담원류형화농도이급린원소농도대생물적려탑정화겁저농도CH 4적영향。이용공기화고순CH 4혼합기모의매광핍풍와사，생물적려탑전료위도자포이배，이실험실분리사선도적갑완양화균진행접충괘막。결과표명，진기류량위2 L?min?1，분림액류량위0.1 L?min?1，진기CH4농도재0.1%~1.1%，이NaNO3위담원시，생물적려탑정화CH4적효과최호，우우(NH4)2SO4화NH4NO3위담원시적표현。분림액중NaNO3농도위70 mmol?L?1，진기CH4농도위0.1%~1.1%시，생물적려탑적CH4거제부하위10.67~39.72 g?m?3?h?1，거제부하수CH4농도증가이증가；CH4정화솔위97.92%~39.70%，정화솔수CH4농도증가이하강。재최가담원조건하，진기CH4농도위0.9%，P원소농도위100 mmol?L?1시，적려탑CH4거제부하최대위49.69 g?m?3?h?1，CH4정화솔60.90%。
The effects of nitrogen source and phosphorus concentration on bioconversion of low concentration methane were analyzed in a biofiltration system. Ceramic Pall ring was used as the packing material and air/pure methane gas mixtures were used to simulate coal mine ventilation air methane (VAM). A biotrickling filter was inoculated with methanotrophic bacteria which had high methane bio-oxidation efficiency. The biotrickling filter (BTF) was operated at conditions of gas flow rate 2 L?min?1, nitrate salts medium (NSM) nutrient solution spray rate 0.1 L?min?1, inlet methane concentration 0.1%~1.1%. When the nitrogen source in NSM is NaNO3, the methane elimination capacity (ECMet) is higher than (NH4)2SO4and NH4NO3. The optimum condition is NaNO3 concentration 70 mmol?L?1, inlet methane 0.1%~1.1% which corresponds to an ECMet of 10.67~39.72 g?m?3?h?1.ECMet increases with inlet methane concentration but methane removal efficiency (REMet) decreases from 97.92% to 39.70% with the increase of inlet methane. The best BTF performance was obtained with NaNO3 70 mmol?L?1, P 100 mmol?L?1 and inlet methane concentration 0.9%, with maximumECMet andREMet values of 49.69 g?m?3?h?1 and 60.90%, respectively.
