Development of creation technology of tidal flat blotope for reduction of nitrogen and phosphorus loads and efficient use of treated sewage

开发滩涂污渍减少氮磷负荷及处理后污水高效利用技术

• 批准号: 10450193
• 负责人: NISHIMURA Osamu
• 金额: $ 7.81万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10450193/
• 关键词: tidal flat; wetland; nitrogen; phosphorus; treated sewage; benthos; reed; seaweed bed

In order to develop a creation technology of tidal flat biotope for reduction of nitrogen and phosphorus loads and efficient use of treated sewage, we studied on the self-purification function of tidal flats, such as nutrients uptake by reed wetland, nutrients cycle and denitrification in tidal flat and nutrients uptake by seaweed bed.The results of this study are summarized as follows.1) Reed wetlandThe effect of porosity of the filling carrier on removal capability of nutrients from treated sewage was analyzed. Nitrification and denitrification by the rhizosphere microorganism were important for the nitrogen removal, and the simultaneous reaction of nitrification and denitrification occurred under appropriate conditions of porosity and water surface loading. The removal of phosphorus was mainly carried out by the adsorption to the carrier. Therefore, high removal efficiency was obtained by the carrier with low porosity.2) Tidal flatThe purification function of attached animal that li … More ved for the revetment of the Tokyo inner bay was evaluated. The attached animal purified organic matter of 19t-COD/day at revetment distance of 192km, and this value corresponded to 23% of COD that flows from Tokyo.The environment factors concerning fluctuations of biomass and species of macrobenthos inhabiting in the Kasai artificial beach were analyzed. The benthos was damaged in the rainfall time. It was due to the inflow and retention of river water. When the river water had been increased by rainfall, the water quality in Kasai artificial beach became a low salinity by the structural problem, and some kinds of bivalve died.3) Seaweed bedThe nutrient uptake rate of Sargassum horneri became the highest from May to June in which the growth rate was also the highest We could make the equation of the nutrient uptake rate which was the function of growth stage, nutrient concentration, illumination intensity and temperature. The effect of nutrients uptake by S. horneri on the nutrients cycle of Matsushima Bay was evaluated. The S. horneri bed in May absorbed about 70% of the nutrients inflow load, and it greatly contributes to improving water quality. Less

为了开发减少氮磷负荷、高效利用处理后污水的滩涂生境营造技术，我们对滩涂芦苇湿地养分吸收、养分循环和反硝化等自净功能进行了研究。滩涂与海藻床对养分的吸收。本研究结果总结如下。 1）芦苇湿地填充载体孔隙度对处理后养分去除能力的影响分析了污水根际微生物的硝化和反硝化作用对脱氮的重要作用，在适当的孔隙度和水表面负荷条件下，硝化和反硝化反应同时发生，磷的去除主要是通过吸附进行的。因此，低孔隙率的载体可以获得较高的去除效率。2）滩涂用于护岸的附着动物的净化功能。东京内湾的附着动物在护岸距离192km处净化了19t-COD/天的有机物，该值相当于从东京流出的COD的23%。与栖息的大型底栖动物的生物量和物种的波动有关的环境因素。分析了河西人工海滩的底栖生物在降雨期间受到的破坏，这是由于河水因降雨而增加。由于结构问题，葛西人工海滩的水质变得低盐度，部分双壳类动物死亡。3）海藻床马尾藻的养分吸收率在5-6月份达到最高，其中生长率也最高。建立了养分吸收率与生长阶段、养分浓度、光照强度和温度的函数方程，评价了S. horneri吸收养分对松岛湾养分循环的影响。 5月份，S. horneri床吸收了约70%的营养物质流入量，对改善水质有很大贡献。

项目成果

西村修, 木村賢史, 山田満男, 稲森悠平, 須藤隆一: "人口干潟が水質浄化能に及ぼす影響の数値モデルによる解析"日本沿岸域学会論文集. 10. 137-149 (1998)

Osamu Nishimura、Kenji Kimura、Mitsuo Yamada、Yuhei Inamori、Ryuichi Sudo：“利用数值模型分析人工潮滩对水净化能力的影响”日本海岸带学会论文集 10. 137-149 (1998)。

K.KIMRA, O.NISHIMURA, T.TSUCHIYA, S.OKUTOMI, K.YAMASITA, Y.INAMORI, Q.SUDO: "Filtration, Respiration and Assimilation in the Suspension Feeding Bivolves, Limnoperna for turei kikuch and Mactre Venerifori"Japanese Journal of Water Treatment Biology. 34. 18

K.KIMRA、O.NISHIMURA、T.TSUCHIYA、S.OKUTOMI、K.YAMASITA、Y.INAMORI、Q.SUDO：“悬浮饲喂双壳动物、Limnoperna for turei kikuch 和 Mactre Venerifori 中的过滤、呼吸和同化”日本期刊

坂巻隆史, 千葉信男, 西村修: "七北田川河口干潟の底質・直上水間における無機態栄養塩フラックスの変動特性"土木学会第56回年次学術講演会. 398-399 (2001)

Takashi Sakamaki、Nobuo Chiba、Osamu Nishimura：“七田川河口潮滩底部沉积物与上覆水之间无机养分通量的波动特征”，日本土木工程学会第 56 届学术年会 398-399（2001 年）。 ）

坂巻隆史: "礫間接触酸化法における微細藻類の除去特性" 水環境学会誌. 21・11. 772-779 (1998)

Takashi Sakamaki：“砾石-砾石接触氧化法中微藻的去除特性”日本水环境学会杂志21・11（1998）。

梶浦建樹, 坂巻隆史, 佐々木久雄, 千葉信男, 西村修, 須藤隆一: "室内実験及び現場隔離水塊実験による大型アカモクSargassum horneriの栄養塩吸収特性の評価"日本沿岸域学会論文集. 14. 125-136 (2002)

Tateki Kajiura、Takashi Sakamaki、Hisao Sasaki、Nobuo Chiba、Osamu Nishimura、Ryuichi Sudo：“通过实验室和现场分离水团实验评估马尾藻的养分吸收特性”日本海岸带学会论文集 14. 125 -136。 (2002)