DEVELOPMENT OF ACTIVATED WATER TREATMENT SYSTEM FOR CONTROLLING PLANT GROWTH

从水环境保护和保证优质原水控制植物生长的角度，重点研究了如何减少化学药剂的使用，并介绍了有效的水处理方法。在水处理系统中，该设备包括不锈钢容器中的颗粒陶瓷。以具有优良成型性和烧结性的硅酸盐矿物为原料，选择天然岩石粉碎成粉，制得表面带电的颗粒状陶瓷。颗粒陶瓷的直径为2 mm，绝对重力为2.62，莫氏硬度为6.8。当水从容器的下侧向上侧流过时，颗粒陶瓷在不锈钢容器中流态化。陶瓷处理后的水对水中的化学成分影响不大。制备了高岭土浓缩液，并用一瓶水对陶瓷处理水和未处理水的絮凝效果进行了比较。结果表明，陶瓷处理后的水表现出明显的变化。絮凝是以电化学反应为基础的，悬浮液的表面电荷被絮凝剂的电荷中和，悬浮液通过桥联作用形成大量的絮团。因此，陶瓷处理容易在活化水中出现羊群。在温室内，羽化率与对照差异显著。在采用该水处理系统的NFT栽培中，苗长、根长和生长速度也有所不同。以上结果表明，陶粒处理水提高了种子的活力，表现出良好的优质植株生产效果。

On the water environment protection and the assuring good quality raw water for controlling plant growth, this study focused on how to reduce the use of chemical agents and introduced effective water treatment. In the water treatment system, the apparatus included granular ceramics in a stainless steel vessel. Some natural rocks were selected and ground to powder, and the granular ceramics having electric charges at the surface were produced, by using the natural raw materials of silicate minerals having excellent mouldabilities and sintering properties. The size of the granular ceramics was 2 mm in diameter with the absolute gravity 2.62, and mohs'hardness 6.8. When the water goes through from the lower to the upper side of the vessel, the granular ceramics fluidize in the stainless steel vessel. The ceramics-treated water didn't little change the chemical composition in water. The Kaolin concentration was prepared, and a Jar water was used to compare the flocculation effect of the ceramics-treated water with non-treated water. As the results, the ceramics-treated water showed significant changes. Flocculation was based on electrochemical reaction, the surface charges of suspension were neutralized by the charges of flocculant, and the suspension formed large flock by the bridge action. Therefore, flocks were liable to appear in activated water by the ceramics treatment. In green houses, the emergence rates were differentiated at a significance level to the control. In the NFT culture using this water treatment system, the seedling length, the root length and the growing speed were also differentiated. The above results show that the ceramics-treated water enhanced the vigor of the seeds, and displayed a good quality plant production effect.