共查询到17条相似文献,搜索用时 78 毫秒
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马铃薯淀粉废水处理工艺的试验研究 总被引:1,自引:0,他引:1
采用超滤+厌氧+膜生物反应器(MBR)工艺处理马铃薯淀粉废水.结果表明,MBR对COD的去除率不小于99%,出水COD<60mg·L-1,BOD<10mg·L-1,p(TDS)<1 000mg·L-1,去除效果好,系统长期运行稳定.产水水质达到回用水水质要求. 相似文献
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以双氧水和亚铁离子为氧化剂与改性粉煤灰处理马铃薯淀粉废水,考察了不同浓度双氧水的加入量、绿化亚铁加入量、pH、反应时间及粉煤灰的加入量对COD去除率的影响。结果表明:在反应条件为15%双氧水投加量15 mL/L,0.2 mol/L绿化亚铁加入量30 mL/L,改性粉煤灰的用量50 g/L,pH 5.0,反应时间45 min时,COD去除率可达94%。 相似文献
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在马铃薯淀粉加工过程中产生大量的高浓度酸性有机废水,直接排放会对环境造成严重影响,因此对马铃薯淀粉加工产生的废水的处理越来越受到广泛的关注。本文主要论述了马铃薯淀粉废水的特点及目前比较成熟的淀粉废水处理工艺,并对各工艺的优缺点进行了比较。 相似文献
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混凝法处理马铃薯淀粉废水的研究 总被引:4,自引:1,他引:4
用混凝法处理马铃薯淀粉废水。研究了混凝剂的种类、投加量、pH以及沉降时间对马铃薯淀粉废水COD去除率的影响。通过对废水处理前后各项指标及处理成本等各方面因素进行综合分析,结果得知,PFS作为马铃薯淀粉废水的混凝剂较为合适,此时马铃薯淀粉废水去除率可达到58%。 相似文献
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以马铃薯淀粉、氯乙酸、氢氧化钠为原料合成高取代羧甲基马铃薯淀粉,探讨了水分含量、氢氧化钠用量、氯乙酸用量、醚化温度对羧甲基马铃薯淀粉取代度(DS)的影响,并通过IR谱图、XRay衍射分析对羧甲基马铃薯淀粉进行了表征。 相似文献
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IC反应器处理马铃薯淀粉生产废水的试验研究 总被引:4,自引:3,他引:4
试验采用超滤-IC反应器-MBR工艺处理马铃薯淀粉生产废水,重点研究了IC反应器处理马铃薯淀粉废水的工艺参数。结果表明,在常温下,当进水COD的质量浓度为6000~9000mg/L、HRT为5h、容积负荷为23.62kg[COD]/(m3·d)时,IC反应器对COD的去除率为91.43%。采用该工艺处理马铃薯淀粉生产废水完全可以达到废水回用的目的。 相似文献
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Li Ping Huang Bo Jin Paul Lant Jiti Zhou 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2003,78(8):899-906
This paper describes a feasibility study of a for lactic acid production integrated with are treatment of wastewater from an industrial starch plant. Rhizopus oryzae two strains, Rhizopus arrhizus and Rhizopus oligosporus were tested with respect to their capability to carry out simultaneous saccharification and fermentation to lactic acid using potato wastewater. Rhizopus arrhizus DAR 36017 was identified as a suitable strain that demonstrated a high capacity for starch saccharification and lactic acid synthesis. The optimal conditions, in terms of pH, temperature and starch concentration, for lactic acid production were determined. The selected fungal strain grew well in a pH range from 3.0 to 7.0. The addition of CaCO310 g dm?3 maintained the pH at 5.0–6.0 and significantly enhanced lactic acid production. Kinetic study revealed that almost complete starch saccharification and a lactic acid yield of 450g kg?1 could be achieved in 20 h and 28 h cultivation, respectively. The maximum lactic acid production 21 g dm?3 and mycelial biomass (1.7 g dm?3) were obtained at 30 °C. Besides the multiple bioproducts, total removal of suspended solids and 90% reduction of COD were achieved in a single no‐aseptic operation. Copyright © 2003 Society of Chemical Industry 相似文献
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