Development of an Integrated Concrete Sludge Treatment and Recycling System

混凝土污泥处理与资源化综合系统的开发

• 批准号: 12555160
• 负责人: SATO Yoshiaki
• 金额: $ 2.56万
• 依托单位: Oita University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555160/
• 关键词: Ready-Mixed Concrete Plant; Concrete Sludge; Integrated Recycling System; Sludge Water; Sludge Cake; Inorganic Coagulant; Pulverized Dry Sludge; Waste Casting Sand; 回収水

The purpose of this study is to discuss an integrated concrete sludge treatment and recycling system that regenerates the concrete sludge discharged from ready-mixed concrete plants into a powdered material of high added value. The following conclusions may be drawn based on the current research project:(1) The coagulant including more than 95% of inorganic substance for the treatment of concrete sludge was developed, and the test data on the optimum dosage and the stirring time of inorganic coagulant were collected.(2) Sludge cake obtained by the process of pressurization and dehydration of sludge water was dried, and then crushed finely by forded air to produce the powdered material (Pulverized Dry Sludge, PDS). The data on the manufacturing condition of PDS were collected. It was found that PDS consisted of rounded ultra fine particles having a size of 3-10μm and a Blaine specific surface area of 8,000-10,000 cm^2/g, and was easy to produce.(3) The experiments on the use of PDS as a … More kind of mineral admixture and the powder material for high-fluidity concrete were carried out, and the good test results were obtained. It was confirmed that in the case of a mineral admixture, PDS had no harmful effects on hardened concrete although the dosage had sometimes to be limited to about 10% of the cement content because high content of concrete sludge significantly increased the demand of mixing water, in the case of high-fluidity concrete, the limitation of PDS content was 30 vol.%, according to Regulation JASS5 for high-fluidity concrete although test results showed that high fluidity concrete containing PDS up to 60% of volume content had a good performance.(4) The application of the complete recycling system developed in this research project to other waste materials other than concrete sludge was discussed. It was found that the ultra fine powder crushing and processing technology will become possible to apply other wastes such as the faulty construction materials, waste glass bottles and casing sand as well as wet wastes such as dirty mud discharged from the quarrying factory and the construction site. Less

本研究的目的是探讨一个集成的混凝土污泥处理和回收系统，再生混凝土污泥排放预拌混凝土厂成高附加值的粉状材料。（1）研制了无机物含量大于95%的混凝土污泥混凝剂，并对无机混凝剂的最佳投加量和搅拌时间进行了试验研究。(2)将污泥水加压脱水后得到的泥饼进行干燥处理，然后用鼓风机将泥饼粉碎成粉末状物料（PDS）。收集了PDS生产条件的数据。结果发现，PDS由尺寸为3-10μm的圆形超细颗粒组成，布莱恩比表面积为8，000 - 10，000 cm^2/g，易于生产。(3)PDS作为一种新的抗肿瘤药物的实验研究 ...更多信息 进行了高流动性混凝土用矿物掺合料和粉料的试验研究，取得了良好的试验结果。已经证实，在矿物掺合料的情况下，PDS对硬化的混凝土没有有害影响，尽管有时由于高含量的混凝土淤泥显著增加了混合水的需求，所以剂量被限制在水泥含量的约10%，在高流动性混凝土的情况下，PDS含量的限制为30体积%，虽然试验结果表明，PDS体积含量高达60%的高流动性混凝土具有良好的性能。(4)探讨了本研究项目开发的完整回收系统在混凝土污泥以外的其他废弃物中的应用。研究发现，超细粉碎加工技术将使其他废弃物如劣质建筑材料、废玻璃瓶、套管砂以及采石厂和建筑工地排放的湿废弃物如脏泥浆的应用成为可能。少

项目成果

大塚貴裕, 佐藤嘉昭, 清原千鶴, 大谷俊浩, 松永静也, 竹田吉紹: "鋳物ダストのコンクリート用混和材料としての有効利用に関する研究"日本建築学会2002年度大会(関東)学術講演梗概集. A-1 材料施工. 941-942 (2002)

Takahiro Otsuka、Yoshiaki Sato、Chizuru Kiyohara、Toshihiro Otani、Shizuya Matsunaga、Yoshiaki Takeda：“铸造粉尘作为混凝土外加剂的有效利用研究”日本建筑学会（关东）2002年年会学术讲座摘要）。-1 材料构造。

Yoshiaki SATO, Chizuru KIYOHARA, Toshihiro OTANI et al.: "Effective Use of Pulverized Waste Casting Sand as Concrete-Making Materials"Proceedings of the Japan Concrete Institute. Vol. 25, No. 1 (to be published). (2003)

Yoshiaki SATO、Chizuru KIYOHARA、Toshihiro OTANI 等：《有效利用粉状废铸砂作为混凝土制造材料》日本混凝土学会会议录。

永野敬喜, 大塚貴裕, 佐藤嘉昭, 清原千鶴, 大谷俊浩, 上田賢司: "無機100%凝集剤の凝集効果に関する研究"日本建築学会研究報告九州支部,構造系. 第42号・1. 37-40 (2003)

Takayoshi Nagano、Takahiro Otsuka、Yoshiaki Sato、Chizuru Kiyohara、Toshihiro Otani、Kenji Ueda：《100%无机絮凝剂的絮凝效果研究》日本建筑学会九州分会结构部研究报告第42期，1. 37-。 40 (2003)

三ッ股嗣朗, 劉嘉銘, 佐藤嘉昭, 清原千鶴, 大谷俊浩, 永松静也: "微粉砕乾燥スラッジ(PDS)を用いたペーストの流動特性および強度特性"日本建築学会2001年度大会(関東)学術梗概集. A-1 材料施工. 223-224 (2001)

Tsuguro Mitsumata、Kaming Liu、Yoshiaki Sato、Chizuru Kiyohara、Toshihiro Otani、Shizuya Nagamatsu：“使用细粉干污泥（PDS）的浆料的流动性和强度特性”日本建筑学会2001年年会（关东）学术摘要卷A-。 1 材料构造。223-224 (2001)

三ッ股嗣朗, 劉嘉銘, 大塚貴裕, 佐藤嘉昭, 清原千鶴, 大谷俊浩, 永松静也: "微粉末を混入したコンクリートの調合設計に関する研究(その1.微粉砕乾燥スラッジを用いた場合)"日本建築学会研究報告九州支部,構造系. 第41号・1. 29-32 (2002)

Tsuguro Mitsumata、Kaming Liu、Takahiro Otsuka、Yoshiaki Sato、Chizuru Kiyohara、Toshihiro Otani、Shizuya Nagamatsu：“细粉混凝土配合比设计研究（第 1 部分：使用细粉状干污泥时）” 日本建筑研究所九州分所报告，结构工程第41期，1. 29-32 (2002)