{"title":"u型气升式生物反应器中城市污泥的中温和嗜热好氧消化","authors":"R.D. Tyagi , F.T. Tran , T.J. Agbebavi","doi":"10.1016/0269-7483(90)90083-5","DOIUrl":null,"url":null,"abstract":"<div><p>Aerobic digestion of primary and secondary sludges was studied in airlift bioreactors at mesophilic and thermophilic temperatures. The experimental studies were conducted with a laboratory U-shape airlift reactor (operating volume 23 liters) and in a pilot U-shape airlift reactor of 1150 liters operating volume. In the laboratory reactor, with cold (6°C) and concentrated (3–4% solids) feed of primary and secondary municipal sludge, a 30% volatile suspended solids (VSS) reduction was achieved with a hydraulic retention time (HRT) of 2·5 days. A VSS loading rate of 8·2 kg VSS/m<sup>3</sup>/day was achieved. This loading is comparable to that obtained in a pure-oxygen sparged, mixed reactor.</p><p>In the pilot-plant reactor at mesophilic temperature (31–33°C), a VSS loading rate of 7·9 kg VSS/m<sup>3</sup>/day and a VSS reduction of 40% were achieved with a HRT of 4 days.</p></div>","PeriodicalId":100177,"journal":{"name":"Biological Wastes","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0269-7483(90)90083-5","citationCount":"23","resultStr":"{\"title\":\"Mesophilic and thermophilic aerobic digestion of municipal sludge in an airlift U-shape bioreactor\",\"authors\":\"R.D. Tyagi , F.T. Tran , T.J. Agbebavi\",\"doi\":\"10.1016/0269-7483(90)90083-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Aerobic digestion of primary and secondary sludges was studied in airlift bioreactors at mesophilic and thermophilic temperatures. The experimental studies were conducted with a laboratory U-shape airlift reactor (operating volume 23 liters) and in a pilot U-shape airlift reactor of 1150 liters operating volume. In the laboratory reactor, with cold (6°C) and concentrated (3–4% solids) feed of primary and secondary municipal sludge, a 30% volatile suspended solids (VSS) reduction was achieved with a hydraulic retention time (HRT) of 2·5 days. A VSS loading rate of 8·2 kg VSS/m<sup>3</sup>/day was achieved. This loading is comparable to that obtained in a pure-oxygen sparged, mixed reactor.</p><p>In the pilot-plant reactor at mesophilic temperature (31–33°C), a VSS loading rate of 7·9 kg VSS/m<sup>3</sup>/day and a VSS reduction of 40% were achieved with a HRT of 4 days.</p></div>\",\"PeriodicalId\":100177,\"journal\":{\"name\":\"Biological Wastes\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1990-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0269-7483(90)90083-5\",\"citationCount\":\"23\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biological Wastes\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0269748390900835\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biological Wastes","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0269748390900835","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 23
摘要
在气升式生物反应器中,研究了中温和热温条件下初级和次级污泥的好氧消化。实验研究分别在实验室u型气升反应器(运行容积为23升)和中试u型气升反应器(运行容积为1150升)上进行。在实验室反应器中,以低温(6°C)和浓缩(3-4%固体)的初级和二级城市污泥为原料,在水力停留时间(HRT)为2.5天的情况下,挥发性悬浮固体(VSS)减少了30%。VSS加载速率达到8.2 kg VSS/m3/d。这种负荷可与在纯氧喷射混合反应器中获得的负荷相媲美。在中温(31-33°C)中试反应器中,在HRT为4天的情况下,VSS加载率为7.9 kg /m3/天,VSS减少了40%。
Mesophilic and thermophilic aerobic digestion of municipal sludge in an airlift U-shape bioreactor
Aerobic digestion of primary and secondary sludges was studied in airlift bioreactors at mesophilic and thermophilic temperatures. The experimental studies were conducted with a laboratory U-shape airlift reactor (operating volume 23 liters) and in a pilot U-shape airlift reactor of 1150 liters operating volume. In the laboratory reactor, with cold (6°C) and concentrated (3–4% solids) feed of primary and secondary municipal sludge, a 30% volatile suspended solids (VSS) reduction was achieved with a hydraulic retention time (HRT) of 2·5 days. A VSS loading rate of 8·2 kg VSS/m3/day was achieved. This loading is comparable to that obtained in a pure-oxygen sparged, mixed reactor.
In the pilot-plant reactor at mesophilic temperature (31–33°C), a VSS loading rate of 7·9 kg VSS/m3/day and a VSS reduction of 40% were achieved with a HRT of 4 days.