陶瓷滤料在处理高浓度氨氮废水中应用研究

摘要以造纸白泥为主要原料制备的陶瓷滤料具有供碱释钙的性能，可将溶液 pH 调节在 9。3 至 10。9 之间，并释放一定量的 Ca2+。造纸白泥陶瓷滤料对氨氮的静态吸附效果差，吸附率与时间、滤料投加量、温度和初始氨氮浓度等因素无明显的正相关性。将造纸白泥陶瓷滤料作为曝气生物滤池反应器填料，采用好氧活性污泥接种挂膜并处理高浓度氨氮污水。挂膜实验结果表明：造纸白泥陶瓷滤料挂膜速度快，去除污水中氨氮（NH +-N）的效果佳。反应器在挂膜 14 天启动成功，第 15 天时氨氮去除率即达 94。08％。滤料的供碱作用可以维持系统中的碱性环境，滤料表面微生物种类丰富且反应活跃。将挂膜后的滤料于 800℃煅烧再生后用于挂膜，同时使用商品滤料进行对比实验。结果表明，再生滤料具有优秀的生物亲和性，4 天即可启动成功，第 20 天时氨氮去除率达 100%；商品滤料在添加缓冲液的情况下挂膜 13 天时氨氮去除率仅有 59。44%，不加缓冲液时反应器逐渐失效。75284

毕业论文关键词造纸白泥陶瓷滤料供碱释钙曝气生物滤池氨氮去除率

毕业设计说明书外文摘要

Title The Application of Ceramsites in Treating Wastewater Containing High Concentrate of Ammonia Nitrogen

Abstract Ceramsites were mainly prepared from lime mud through the solid state reaction method。 They had the efficiency of Ca2+ and OH- release, which could keep aqueous solutions in alkaline conditions （ pH = 9。3-10。9 ） and release Ca2+。 Static adsorption experiments showed that ceramsites behaved little adsorption of ammonia nitrogen and the adsorption had no obvious positive correlation with time, dosage, temperature or initial concentration of ammonia nitrogen。 To treat water containing high concentration of ammonium-nitrogen, ceramsites were put into the biological aerated filter and seeded with aerobic granular sludge。 The results showed that nitrobacteria multiplied rapidly on the surface of ceramsites and exhibited good growth。 During the start-up period, nitrogen removal reached 60% on the 14th day and 94。08% on the 15th day, demonstrating the good capacity of removing nitrogen。 The efficiency of Ca2+ and OH- release made the reaction environment keep alkaline for a long time。 Abundant species were observed in water samples by biological microscope, proving that the ceramsites are biocompatible。 Ceramsites used in BAF were calcined at 800℃ and put in BAF again to treat the wastewater in the same conditions。 Common filter materials were used as comparison。 The results showed that nitrogen removal reached over 60% in 4 days with the reusable ceramsites while the nitrogen removal of common filter materials only reached 59。44% and failed in removing nitrogen without buffer solution。

Key words lime mud ceramsite Ca2+ and OH- release biological aerated filter nitrogen removal

本科毕业设计说明书第 I 页

1 绪论 1

1。1 造纸白泥简介 1

1。2 我国污水处理现状 1

1。3 曝气生物滤池简介 2

1。4 造纸白泥陶瓷滤料在污水处理中的潜在应用 2

1。5 陶瓷滤料在处理高浓度氨氮废水中应用研究:http://www.youerw.com/cailiao/lunwen_86194.html