DEVELOPMENT OF NOVEL WATER TREATMENT PROCESSES USING MULTI-ELECTRODE SYSTEM

使用多电极系统开发新型水处理工艺

• 批准号: 11650556
• 负责人: SAKAKIBARA Yutaka
• 金额: $ 2.18万
• 依托单位: Gunma University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650556/
• 关键词: Multi-electrode system; novel water treatment process; heavy metal ion; nitrate; phosphorus compound; 電流; 電荷輸送; 電極反応; 水処理; 電気化学的処理; 電解; 直流

Three novel processes for the treatments of heavy metal (Cu^<2+>) ion, nitrate, and phosphorous compounds, respectively, were proposed and their performances were studied experimentally and theoretically.In the process for heavy metal ion removal, it was found that removal efficiency of a model metal ion (Cu^<2+>) was enhanced comparing with former electrolytic process, because electric current was effectively utilized for the metal reduction on the cathode surface (i.e. Cu^<2+> to Cu) in the multi-electrode system. This enhanced performance is attributable to smaller electric current density below limiting current density. Furthermore, it was shown that the multi-electrode system consisting of GAC also increased bio-electrochemical denitrification rate several times, in comparison with former BER studies.Moreover, the multi-electrode system was successfully applied to a novel phosphorous removal process, where phosphorus precipitation occurred with no addition of chemicals and was facilitated by a unique alkaline zone-formation in the multi-electrode system. This invention was applied as domestic, US and EU patents.

提出了三种新的处理重金属离子（Cu^<2+>）、硝酸盐和磷化合物的新工艺，并对其性能进行了实验和理论研究，在重金属离子的去除过程中，发现模型金属离子（Cu^<2+>）的去除率较原电解工艺有了提高，因为在多电极系统中电流被有效地用于阴极表面上的金属还原（即Cu^2+到Cu）。这种增强的性能归因于低于极限电流密度的较小电流密度。此外，与以往的BER研究结果相比，活性炭多电极系统的生物电化学反硝化速率提高了数倍，而且该多电极系统还成功地应用于一种新型的除磷工艺，在该工艺中，磷的沉淀无需添加任何化学物质，而多电极系统中独特的碱性区域的形成促进了磷的沉淀.本发明已申请为国内、美国和欧盟专利。

项目成果

Y.Sakakibara, T.Nakayama, K.Ihara: "Denitrification and Oxygenation Process Equipped with a Multi-Electrode System"CD Rom of the 1_<st> World Water Congress of the International Water Association. L243. 4 (2000)

Y.Sakakibara、T.Nakayama、K.Ihara：“配备多电极系统的反硝化和氧化过程”国际水协会第一届世界水大会光盘。

M. Prosnansky, Y. Sakakibara: "High-Rate Denitrification in Biofilm-Electrode Reactor Combined with Microfiltration"Bioremediation of Inorganic Compounds, Leeson, Peyton, Means, and Magar (eds), Battle Press. 6(9). 201-207 (2001)

M. Prosnansky、Y. Sakakibara：“生物膜电极反应器中与微滤相结合的高速反硝化”无机化合物的生物修复，Leeson、Peyton、Means 和 Magar（编辑），Battle Press。

Y.Sakakibara, T.Nakayama: "A Novel Multi -Electrode System for Electrolytic and Biological Water Treatments : Electric Charge Transfer and Application to Denit rification"Water Research. Vol.35,No.2. 768-778 (2001)

Y.Sakakibara、T.Nakayama：“用于电解和生物水处理的新型多电极系统：电荷转移和脱硝应用”水研究。

Y.Sakakibara, T.Nakayama, K.Ihara: "Denitrification and Oxygenation Process Equipped with a Multi -Electrode System"CD Rom of the 1^<st> World Water Congress of the International Water Association. L243. 4 (2000)

Y.Sakakibara、T.Nakayama、K.Ihara：“配备多电极系统的反硝化和氧化过程”国际水协会第一届世界水大会光盘。

M.Prosnansky, Y.Sakakibara: "High-Rate Denitrification in Biofilm-Electrode Reactor Combined with Microfiltration"6_<th> In Situ and On-Site Bioremediation International Symposium(accepted). (2001)

M.Prosnansky、Y.Sakakibara：“生物膜电极反应器与微滤相结合的高速反硝化”第六届原位和现场生物修复国际研讨会（已接受）。