Hybrid Wastewater Treatment System for Water Reuse and P Recovery

用于水回用和磷回收的混合废水处理系统

• 批准号: 08458160
• 负责人: WATANABE Yoshimasa
• 金额: $ 3.97万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08458160/
• 关键词: Wastewater; Reuse; Hybrid; Coagulation; Membrane; Phosphorous; Enzyme; Biofilm; 下水処理; 凝集沈殿; 膜分離; ファウリング; フミン質; ファスファターゼ; ハイブリッドシステム; リン回収; フォスファターゼ; 酸性フォスファターゼ; 有機酸

1) This research dealt with the coagulation characteristics of polysilicato-iron (PSI), a new inorganic polymer coagulant, when it was applied to coagulate algae and municipal wastewater. The experimental results obtained with jar tests indicate that PSI was more effective than PAC and AS in coagulating and separating Microcystis sp. and Stephanodiscus sp. When the jet mixed separator (JMS) was used as a unit of simultaneous flocculation and sedimentation, PSI had almost the same effect as PAC at the same dosage of 5 mg/l Al or Fe in coagulating municipal wastewater.2) This research has developed a novel membrane process in which ammonia oxidizers are fixed en the membrane disk. In this study, the characteristics of the membrane filtration resistance was investigated The results derived from this study were summarized as follows : (1) The magnitude of the filtration resistance was strongly affected by the initial inoculation. (2) The filtration resistance due to the accumulate cake was … More found to be dominant. (3) Increasing the disk rotational speed was found to be efficient for removing cake. About 3000 hours of the operation could be continued by only implementing this simple cleaning method every 500 hours. (4) Filtration resistance excluding the cake resistance seemed to be caused by humic substances and extracellular polymeric substance produced by biomass.3) The density of ammonia-oxidizers which formed dense cell cluster was about 5 times higher in the innermost biofilm than in the middle and surface of the biofilm. Due to the presence of ammonia-oxidizers throughout the biofilm, ammonium oxidation zone was expanded with increasing in oxygen penetration depth, which consequently resulted in an increase of the overall ammonium flux into the biofilm. Specific ammonium oxidation rate was dependent upon the density of ammonia-oxidizers.4) Phosphorus deficiency induces the synthesis of acid phosphatases in roots of lupin and other plant species. In this study we examined the induction of secretory acid phosphatase (S-Apase) at both the molecular and cellular levels. Lupin plants had increased levels of total acid phosphatase activity within two to five days after P was withered and levels approximately doubled by 15 days. Lateral roots and not main taproots were responsible for this increase in acid phosphatase activity. Immunoblot analysis using antibodies raised against a purified S-Apase showed that the synthesis of this protein was induced as early as 2 days in the P deficient treatment and that levels dramatically increased by 15 days. In contrast, no immunoreactive polypeptide was evident from crude extracts prepared from root tissues of-P treated plants. Less

1）这项研究涉及一种新的无机聚合物凝结剂多凝血铁（PSI）的凝血特性，当它用于凝结藻类和市政废水。通过JAR测试获得的实验结果表明，PSI比PAC更有效，并且在凝结和分离微囊藻SP中。和Stephanodiscus sp。当射流混合分离剂（JMS）用作同时碎片和沉降的单位时，PSI在相同剂量的5 mg/l al或Fe的凝结中具有与PAC相同的作用，在凝结市政废水中。在这项研究中，研究了膜过滤抗性的特征，从本研究中得出的结果总结如下：（1）过滤抗性的大小受初次接种的强烈影响。 （2）由于积累蛋糕而引起的过滤性……更为主导。 （3）发现磁盘旋转速度的提高对于去除蛋糕是有效的。仅每500小时仅实施这种简单的清洁方法，就可以继续操作约3000小时。 （4）不包括蛋糕抗性的过滤耐药性似乎是由生物质产生的腐殖质和细胞外聚合物物质引起的。3）氨氧化剂的密度比在生物膜的中间和表面高约5倍。由于整个生物膜中存在氨氧化剂，随着氧渗透深度的增加，氧化区扩大了，从而导致总体铵通量增加到生物膜中。特定的氧化率取决于氨氧化剂的密度。4）磷缺乏诱导羽扇豆根和其他植物种类中酸磷酸酶的合成。在这项研究中，我们检查了分子和细胞水平的秘密酸磷酸酶（S-apase）的诱导。羽扇豆植物在枯竭P后的两到五天内具有总酸性磷酸酶活性的水平，大约翻了一番15天。横向根，而不是主taproot是造成酸性磷酸酶活性增加的原因。使用针对纯化的S-apase提出的抗体的免疫印迹分析表明，该蛋白的合成在P缺乏治疗中最早被诱导，并且该水平急剧增加15天。相比之下，从P处理的植物的根组织制备的粗提取物中没有证明免疫反应性多肽。较少的

项目成果

Y.Watanabe, S.Kasahara and Y.Iwasaki: "Enhanced Flocculation/Sedimentation Process by a Jet Mixed Separator" Water Science & Technology. 37 (10). 55-67 (1998)

Y.Watanabe、S.Kasahara 和 Y.Iwasaki：“通过喷射混合分离器增强絮凝/沉淀过程”水科学

Y.Watanabe: "Hybrid Wastewater Treatment System" Journal of Environmental Instrumentation Control and Automation. 2 (3). 1-9 (1998)

Y.Watanabe：“混合废水处理系统”环境仪表控制与自动化杂志。

S.Okabe, Y.Watanabe: "Uptake and Release of Inert Florescence Particles by Mixed Population Biofilms" Biotechnology and Bioengineering. 53・5. 459-469 (1997)

S.Okabe，Y.Watanabe：“混合群体生物膜对惰性花色颗粒的吸收和释放”生物技术和生物工程 53・5（1997）。

S.Okabe, Y.Watanabe, et al.: "Spatial Microbial Distributions of Nitrifiers and Heterotrophs in Mixed-Population Biofilms" Biotechnology and Bioengineering. 50 (1). 24-35 (1996)

S.Okabe、Y.Watanabe 等人：“混合群体生物膜中硝化菌和异养生物的空间微生物分布”生物技术和生物工程。

H.Satoh, S.Okabe and Y.Watanabe: "Ammonium Oxidation in Mixed-population Biofilms Determined with the Use of Microelectrodes And in situ Hybridization" Journal of Japan Society on Water Environment. 22 (3). 206-214 (1999)

H.Satoh、S.Okabe 和 Y.Watanabe：“使用微电极和原位杂交测定混合群体生物膜中的铵氧化”日本水环境学会杂志。