共查询到19条相似文献,搜索用时 156 毫秒
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为制备高效煤炭微生物絮凝剂,论述了煤炭微生物絮凝剂的物质组成及絮凝效果,重点讨论了微生物絮凝剂的引入分形理论改良絮凝动力学的研究进展,分析了絮凝剂投加机制和絮凝剂微生物对煤炭微生物絮凝效果的影响。针对目前煤炭微生物絮凝剂存在的问题和局限,提出了展望。未来应加强煤炭微生物絮凝活性物质结构的研究,特别是分子层次的研究;从基因调控,DNA诱变的角度开展煤炭絮凝微生物的选育工作,以生物工程的方式组建高效工程菌;加强煤炭絮凝微生物的复合菌型技术研究以及微生物絮凝剂与传统絮凝剂的复配效果研究,探索多种协同复配的给药制度。 相似文献
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壳聚糖絮凝剂处理水源水中有机物的试验研究 总被引:9,自引:0,他引:9
研究了壳聚糖絮凝剂的絮凝特性,进行了壳聚糖絮凝剂跟无机絮凝剂复合絮凝对水源水中浊度和有机物去除的试验。实验结果表明,复合絮凝能够相互促进各自的絮凝性能,显著提高有机物的去除效果,并使除浊和去除有机物得到了统一。在壳聚糖絮凝剂分别与三种常用无机絮凝剂(硫酸铝、氯化铁和聚合铝铁)的复合絮凝的效果的实验表明,其中聚合铝铁跟壳聚糖的复合絮凝剂的效果最好,在最佳条件下,其浊度、CODMn和UV254的去除率分别达到了97%、44%和55%。 相似文献
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分别运用无机絮凝剂Al2(S04),和FeCl3,对染料废水进行了前处理试验。为了提高无机絮凝剂的絮凝沉淀和脱色作用,在实验过程中还加入了脱色剂和阴离子聚合物聚丙烯酰胺。无机絮凝剂及其助剂对染料废水具有较好的絮凝沉淀作用,可以作为染料废水的前处理过程。 相似文献
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对F00微生物絮凝剂的制备、性质及絮凝条件进行了研究.研究结果表明,(1)微生物絮凝剂F00制备的最佳条件pH值为11,加2倍体积丙酮时,产生沉淀量最多;(2)该絮凝剂具有良好的pH稳定性和热稳定性;(3)该絮凝剂最佳絮凝条件为:絮凝体系温度40 ℃,絮凝剂使用量为2%,絮凝时间30 min. 相似文献
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氧化铝微细颗粒絮凝沉降研究 总被引:1,自引:0,他引:1
用羧甲基纤维素、聚丙烯酰胺、硫酸铝和氯化铁四种絮凝剂进行氧化铝微细颗粒的絮凝沉降研究。试验结果表明:在适宜的参数条件下,四种絮凝剂均可显著提高氧化铝微细颗粒的沉降速度。根据沉降颗粒的形貌探讨了有机絮凝剂和无机絮凝剂的絮凝沉降机理 相似文献
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针对田庄选煤厂生产实际问题,进行了煤泥粒度组成测定、泥化矿物成分测定等试验,有针对性地筛选出合适的絮凝剂,并应用于工业生产,使泥化尾煤水能够顺利絮凝沉降,提高了田庄选煤厂入选泥化原煤的适应能力。 相似文献
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In the experimental study carried out on mono-flocculation, anionic and especially non-ionic polymers strongly flocculated the coal suspension than cationic polymer. The dual-flocculation of the coal suspension with cationic and anionic polymer combination was also studied and the high performances of flocculation were also reached with dual-polymer approach. Furthermore, dual-polymer system required lower concentrations for the successful flocculation of coal particles. On the other hand, the pre-destabilization of the coal suspension with calcium and magnesium ions at particular pH and concentrations highly improved the flocculation of fine coal particles with these polymers. 相似文献
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利用形成配合物的原理,合成了新型聚丙烯酰胺铁絮凝剂(PF),同时验证了PF在煤泥水处理中的絮凝助滤性能,浅析了其絮凝助滤机理.实验证明,与目前广泛使用的聚丙烯酰胺相比,PF对高浊度、高色度煤泥水有很好的絮凝处理效果,且产生的污泥体积小,脱水性能好. 相似文献
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《分离科学与技术》2012,47(2):347-361
Abstract In this study, the adsorption of synthetic landfill leachate onto four kinds of activated carbon has been investigated. From the equilibrium and kinetics experiments, it was observed that coal based PAC presented the highest organic pollutants removal efficiency (54%), followed by coal based GAC (50%), wood based GAC (33%) and wood based PAC (14%). The adsorption equilibrium of PAC and GAC was successfully predicted by Henry‐Freundlich adsorption model whilst LDFA+Dual isotherm Kinetics model could describe well the batch adsorption kinetics. The flocculation and flocculation–adsorption experiments were also conducted. The results indicated that flocculation did not perform well on organics removal because of the dominance of low molecular weight organic compounds in synthetic landfill leachate. Consequently, flocculation as pretreatment to adsorption and a combination of flocculation–adsorption could not improve much the organic removal efficiency for the single adsorption process. 相似文献
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介绍了枯草芽孢杆菌的生物特性,利用该菌对细粒煤进行絮凝实验研究,结果表明,菌体本身对细粒煤溶液的絮凝作用要强于发酵液及上清液,絮凝率达84.0%;添加助凝剂Fe2+、Ca2+可以提高该菌的絮凝率,其中Ca2+可以使絮凝率达到95.8%;细粒煤溶液的pH值为9时絮凝率最高,可达97.3%。 相似文献
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《国际聚合物材料杂志》2012,61(1-2):81-93
Abstract Synthesis of Carboxymethylcellulose-g-Polyacrylamide was carried out in ceric ion induced redox polymerization technique at 29 ± 1°C. The graft copolymer was characterised by intrinsic viscosity measurement and IR spectroscopy. The flocculation performance of CMC-g-PAM and sodium alginate-g-PAM was tested in both 1 wt% coking and non-coking coal fine suspensions. The flocculation performance of CMC-g-PAM is better than that of SAG-g-PAM in both coking and non-coking coal suspension. CMC alone showed better performance than sodium alginate. 相似文献
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介绍了金鸡岩洗选厂工艺流程。通过对原煤性质的分析,说明入洗煤质极度恶化,为煤泥水处理带来困难。通过对煤泥水处理药剂的实验室及工业试验研究,确定了适合煤质现状的药剂组合,使高灰细粒煤泥得到快速有效沉降,达到了降低药剂用量和提高煤泥回收率的目的。 相似文献