PHOSPHORUS REMOVAL BY THE IRON MODIFIED THERMALLY TREATED GRANULAR ATTAPULGITE CLAY
-
摘要: 传统粉末态除磷材料颗粒过细,从而导致其难与水分离,这极大限制了其在实际工程中的应用。以热处理颗粒态凹凸棒黏土为载体(1~2 mm),采用氯化铁(FeCl3)活性负载的方法制备颗粒态吸附磷材料,并详细研究了吸附材料除磷的最佳改性条件、反应时间、影响因素及其效率。结果表明:2 mol/L氯化铁溶液改性的凹凸棒达到最佳改性条件,且磷的吸附能较好地被朗格缪尔方程模拟,其最大吸附量为4.27 mg/g,是原状黏土固磷容量的2倍左右。铁改性凹凸棒土除磷效率受pH值的影响较大,当水体pH值从4提高到11,去除率下降了10%左右。吸附动力学表明,铁改性凹凸棒土对磷的吸附符合拟二级动力学方程,24 h内可以去除84.46%的磷。0.2 mol/L的盐酸对铁改性凹凸棒的再生效果最优,再生后吸附剂对磷的吸附效率下降40%左右。以上研究结果表明,铁改性凹凸棒土可以作为低浓度水体磷去除材料,具有较大的应用前景。
-
关键词:
- 三氯化铁 /
- 热处理颗粒态凹凸棒土 /
- 吸附 /
- 除磷
Abstract: The traditional powder phosphorus removal materials were difficult to separate from water due to its small particle size, which greatly limited its application in practical engineering. In this paper, granular phosphorus removal materials were prepared by using heat treated attapulgite clay as carrier (1~2 mm) and iron chloride (FeCl3) to active load. The optimum modification conditions, reaction time, influencing factors and phosphorus removal efficiency of the materials were studied in detail. The results showed that the maximum adsorption capacity of attapulgite clay modified by 2 mol/L iron chloride solution was 4.27 mg/g, which was about 2 times of the phosphorus fixation capacity of the original clay. The adsorption of phosphorus on iron modified attapulgite was greatly affected by pH value. The removal rate of phosphorus decreased by about 10%, as the pH value of water body increased from 4 to 11. The adsorption kinetics showed that the adsorption of phosphorus on Fe-modified attapulgite was in accordance with the quasi-second-order kinetic equation, and 84.46% of the phosphorus could be removed within 24 hours. Best effect on the regeneration of iron modified attapulgite was found using 0.2 mol/L hydrochloric acid, and then the phosphrous adsorption efficiency of the regenerated adsorbent decreased by about 40%. The above results showed that iron modified attapulgite can be used as absorbent on water bodies with low phosphrous concentration and has great application prospect.-
Key words:
- iron chloride /
- thermally treated granular attapulgite /
- adsorption /
- phosphorus removal
-
BAL KRISHNA K C, ARYAL A, JANSEN T. Comparative study of ground water treatment plants sludges to remove phosphorous from wastewater[J]. Journal of Environmental Management, 2016, 180:17-23. 杨桂山, 马荣华, 张路, 等. 中国湖泊现状及面临的重大问题与保护策略[J]. 湖泊科学, 2010, 22(6):799-810. LOGANATHAN P, VIGNESWARAN S, KANDASAMY J, et al. Removal and recovery of phosphate from water using sorption[J]. Critical Reviews in Environmental Science and Technology, 2014, 44(8):847-907. GEBREMARIAM S Y, BEUTEL M W, CHRISTIAN D, et al. Research advances and challenges in the microbiology of enhanced biological phosphorus removal:a critical review[J]. Water Environment Research, 2011, 83(3):195-219. WEI X C, VIADERO R C, BHOJAPPA S. Phosphorus removal by acid mine drainage sludge from secondary effluents of municipal wastewater treatment plants[J]. Water Research, 2008, 42(13):3275-3284. RENTZ J A, TURNER I P, ULLMAN J L. Removal of phosphorus from solution using biogenic iron oxides[J]. Water Research, 2009, 43(7):2029-2035. DRIZO A. Physico-chemical screening of phosphate-removing substrates for use in constructed wetland systems[J]. Water Research, 1999, 33(17):3595-3602. WESTHOLM L J. Substrates for phosphorus removal:potential benefits for on-site wastewater treatment?[J]. Water Research, 2006, 40(1):23-36. VICTOR C, GUNNO R. Phosphorus sorption capacity of filter materials used for on-site wastewater treatment determined in batch experiments:a comparative study[J]. Journal of Environment Quality, 2009, 38(2):381-392. 秦培瑞, 郗敏, 李纪华, 等. 经三氯化铁改性的沸石除磷效果[J]. 湿地科学, 2017,15(3):464-469. LⅡRA M, KÖIV M, MANDER U, et al. Active filtration of phosphorus on Ca-rich hydrated oil shale ash:does longer retention time improve the process?[J]. Environmental Science & Technology, 2009, 43(10):3809-3814. VOHLA C, KIV M, BAVOR H J, et al. Filter materials for phosphorus removal from wastewater in treatment wetlands:a review[J]. Ecological Engineering, 2011, 37(1):70-89. SIBRELL P L, MONTGOMERY G A, RITENOUR K L, et al. Removal of phosphorus from agricultural wastewaters using adsorption media prepared from acid mine drainage sludge[J]. Water Research, 2009, 43(8):2240-2250. GAN F Q, ZHOU J M, WANG H Y, et al. Removal of phosphate from aqueous solution by thermally treated natural palygorskite[J]. Water Research, 2009, 43(11):2907-2915. 孔明, 尹洪斌, 吴雨琛,等. 热处理对天然富钙黏土矿物除磷能力的影响[J]. 环境科学学报, 2013, 33(12):3211-3218. YIN H B, YAN X W, GU X H. Evaluation of thermally-modified calcium-rich attapulgite as a low-cost substrate for rapid phosphorus removal in constructed wetlands[J]. Water Research, 2017, 115:329-338. YIN H B, KONG M, FAN C X. Batch investigations on P immobilization from wastewaters and sediment using natural calcium rich sepiolite as a reactive material[J]. Water Research, 2013, 47(13):4247-4258. 陆燕勤, 朱丽. 沸石负载氧化铁吸附剂吸附除磷研究[J]. 环境工程, 2015, 33(4):48-52. 期刊类型引用(14)
1. 江雨燕,黄体臣,甘如美江,王付宇. 融合二次分解的深度学习模型在PM_(2.5)浓度预测中的应用. 安全与环境学报. 2025(01): 296-309 . 百度学术
2. 杨帆,毛腾跃,占伟. 基于PCA-Informer~+模型的周期性甲烷菌体浓度预测研究. 中南民族大学学报(自然科学版). 2025(03): 393-399 . 百度学术
3. 赵涛,叶世榕,罗歆琪,夏朋飞. GNSS-IR潮位反演中高仰角数据质量控制方法. 武汉大学学报(信息科学版). 2024(01): 68-76 . 百度学术
4. 张雅波,陈春晖. 融合情绪分析和Informer-ARIMA模型的比特币价格预测方法. 现代信息科技. 2024(09): 131-135 . 百度学术
5. 陆钊,龙法宁,陈国年. 基于时间序列的发电机设备异常分析. 现代信息科技. 2024(12): 121-124 . 百度学术
6. 王鲁君,孙永华,刘洪涛,于秋红,郝浚杰. 基于多尺度特征Informer模型的受热面积灰预测研究. 山东电力高等专科学校学报. 2024(03): 35-40 . 百度学术
7. 马愈昭,张宇航,王凌飞. TimeGAN-Informer长时机场能见度预测. 安全与环境学报. 2024(07): 2517-2527 . 百度学术
8. 何志铧,熊祖强. 基于Informer神经网络的工作面矿压预测研究. 矿业研究与开发. 2024(07): 142-148 . 百度学术
9. 刘妙男,王魏,胡显辉,许德昊. 基于因果卷积和Informer模型的城市公交客流预测. 控制工程. 2024(08): 1445-1454 . 百度学术
10. 安昱宁,朱四富,刘静,杜立伟,刘长青. 基于深度学习的污水处理厂出水总磷预测方法. 工业水处理. 2024(10): 143-150 . 百度学术
11. 何宇涵. 基于自注意力机制的PM_(2.5)长时间尺度预测. 长江信息通信. 2024(10): 72-75 . 百度学术
12. 王伟,王海云,黄晓芳. 基于Informer的风电机组叶根载荷预测. 水力发电. 2023(09): 85-89 . 百度学术
13. 董子敬,李凡,孙宏,朱梦媛,范博艺. 基于Informer模型的进近阶段工作负荷管理胜任力评估. 飞行力学. 2023(05): 81-87 . 百度学术
14. 蒲维,杨毅强,张渊博,付江涛,宋弘. 基于NGO-VMD-FCBF-Informer的电力负荷组合预测模型. 智能计算机与应用. 2023(11): 135-141 . 百度学术
其他类型引用(17)
-

计量
- 文章访问数: 244
- HTML全文浏览量: 48
- PDF下载量: 7
- 被引次数: 31