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    • 94. 发明申请
    • POLYHYDROXYALKANOATE PRODUCTION DURING WASTEWATER TREATMENT
    • 废水处理过程中的聚羟基烷基酯生产
    • US20130040351A1
    • 2013-02-14
    • US13206327
    • 2011-08-09
    • HSIN-YING LIUMICHAEL WAYNE FALK, JR.
    • HSIN-YING LIUMICHAEL WAYNE FALK, JR.
    • C12P7/40
    • C02F3/12C02F3/1221C02F3/1263C02F3/34C02F2209/001C02F2209/10C12P7/42C12P7/625Y02W10/15Y02W10/45
    • A wastewater treatment process elicits microorganisms to convert a waste stream/organic resource to intracellular biopolymer polyhydroxyalkanoate (PHA). The process includes (i) waste stream/organic resource composition feed criteria, (ii) configuration coupled with operational parameters, and (iii) PHA-laden biomass separation and stabilization. A waste stream/organic resource capable of producing enhanced levels of PHA may be selected based on a combination of criteria, which may include short chain fatty acid concentration, protein concentration, polysaccharides concentration, and total suspended solids concentration. The waste stream is introduced into an aeration basin upon a specific configuration and operated under various parameter combinations for selecting/enriching microorganisms capable of producing PHA. The PHA-laden biomass is separated and stabilized for downstream PHA related product beneficial uses. The present process achieves concurrent wastewater treatment and PHA production, where PHA level (of more than 10% on a cell-weight basis) otherwise could not be obtained.
    • 废水处理过程引起微生物将废物流/有机物质转化为细胞内生物聚合物聚羟基链烷酸酯(PHA)。 该过程包括(i)废物流/有机资源组合物进料标准,(ii)配置与操作参数,以及(iii)含PHA的生物质分离和稳定化。 可以基于标准的组合来选择能够产生增强的PHA水平的废物流/有机资源,其可以包括短链脂肪酸浓度,蛋白质浓度,多糖浓度和总悬浮固体浓度。 废物流根据特定的构型被引入曝气池并在各种参数组合下操作,用于选择/富集能够生产PHA的微生物。 PHA负载生物质被分离并稳定下游PHA相关产品的有益用途。 本方法实现了同时进行的废水处理和PHA生产,其中PHA水平(以细胞重量计超过10%)不能获得。
    • 99. 发明授权
    • Multivalent metal ion management for low sludge processes
    • 用于低污泥处理的多价金属离子管理
    • US07473364B2
    • 2009-01-06
    • US11683162
    • 2007-03-07
    • Mohammad M. Abu-Orf
    • Mohammad M. Abu-Orf
    • C02F3/31
    • C02F3/12C02F1/5236C02F1/68C02F3/1221C02F11/02C02F11/04C02F2209/04C02F2301/046Y02W10/15Y02W10/27Y02W10/45
    • A method for managing multivalent metal ion concentrations in low-yield wastewater treatment processes. The method includes combining wastewater containing BOD with bacteria-laden sludge in a mainstream reactor to form a mixed liquor, separating the mixed liquor into a clear effluent and an activated sludge stream, returning a first portion of the activated sludge stream to the mainstream reactor, processing a second portion of the activated sludge stream in a sidestream bioreactor, returning at least a portion of the activated sludge stream in the sidestream bioreactor to the mainstream reactor, and adding multivalent metal ions to at least one of the wastewater, the mixed liquor, the activated sludge stream and combinations thereof to reduce the generation of waste activated sludge.
    • 一种在低产废水处理过程中管理多价金属离子浓度的方法。 该方法包括在主流反应器中将含有BOD的废水与含细菌污泥混合形成混合液,将混合液分离成澄清的流出物和活性污泥流,将第一部分活性污泥流返回主流反应器, 在侧流生物反应器中处理活性污泥流的第二部分,将侧流生物反应器中的至少一部分活性污泥流返回主流反应器,并将多价金属离子添加到至少一种废水,混合液, 活性污泥流及其组合以减少废活性污泥的产生。