| 粉煤灰基混凝剂的制备及应用研究 |
| 摘要点击 713 全文点击 1677 投稿时间：1994-09-20 |
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| 中文关键词 多普勒全向信标/测距仪 电磁辐射 环境影响评价 |
| 英文关键词 fly ash coagulant pyrite slag wastewater treatment |
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| 中文摘要 |
| 在粉煤灰中加入少量黄铁矿烧渣和适量固体NaCl,在90℃温度下用稀H2SO4搅拌浸提3h,即制得集物理吸附和化学混凝为一体的粉煤灰基混凝剂。这种混凝剂用于不同工业废水处理,COD去除率在50%—83%之间,色度去除率在89%—98%之间,混凝沉淀速度快,污泥体积小,处理废水费用低。 |
| 英文摘要 |
| A fly ash-based coagulant combining the capabilities of both physical adsorption and chemical coagulation has been prepared by adding a small amount of pyrite slag and an appropriate amount of NaCl to fly ash, and then the resulting mixture being stirred and extracted with a dilute H2SO4for 3 hours at a temperature of 90℃.The coagulant thus prepared was used to treat various kinds of industrial wastewaters,giving a COD removal of 53%—83%, a colourness removal of 89%—98%, a higher rate of settlement, a smaller volume of sludge, and a lower cost of treatment. |
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