发明名称 |
METHOD OF RECOVERING POLYHYDROXYALKANOATES (PHAS) FROM MUNICIPAL WASTE SLUDGE |
摘要 |
A method of recovering polyhydroxyalkanoates (PHAs) from municipal waste sludge includes: (a) measuring a solid content in the municipal waste sludge in terms of a volatile suspended solid in the municipal waste sludge; (b) removing supernatant from the municipal waste sludge; (c) freezing the municipal waste sludge; (d) conducting a pretreatment of the municipal waste sludge that has been frozen; (e) adding a surfactant into the pretreated sludge to obtain a slurry; (f) adding a controlled amount of sodium hypochlorite solution to the municipal waste sludge obtained in step (e), a ratio of a volume of the sodium hypochlorite solution to the solid content of the municipal waste sludge ranging from 0.67 mg/ml to 1.25 mg/ml and being defined as a liquid-solid ratio; and (g) separating PHAs from non-PHAs substances in the municipal waste sludge obtained in the step (f).
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申请公布号 |
US2012006754(A1) |
申请公布日期 |
2012.01.12 |
申请号 |
US20100950570 |
申请日期 |
2010.11.19 |
申请人 |
TSAI YUNG-PIN;LU MENG-SHAN;YANG CHIH-CHI;CHEN SHOU-TE;NATIONAL CHI NAN UNIVERSITY |
发明人 |
TSAI YUNG-PIN;LU MENG-SHAN;YANG CHIH-CHI;CHEN SHOU-TE |
分类号 |
C02F1/52 |
主分类号 |
C02F1/52 |
代理机构 |
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主权项 |
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地址 |
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