净水厂污泥/河道淤泥混合煅烧制备除磷材料及其除磷性能研究

金弘毅; 唐雪平; 庄马展; 龚春明; 吴小海; 李飞; 周真明

doi:10.13205/j.hjgc.202308027

净水厂污泥/河道淤泥混合煅烧制备除磷材料及其除磷性能研究

doi: 10.13205/j.hjgc.202308027

1. 华侨大学土木工程学院, 福建厦门 361021;
2. 厦门市环境科学研究院, 福建厦门 361021;
3. 中交一公局厦门工程有限公司, 福建厦门 361000

基金项目:

福建省自然科学基金项目(2019J01052)

国家自然科学基金项目(51878300)

详细信息

作者简介:
金弘毅(1998-),男,研究生,主要研究方向为水体富营养化控制理论与技术的研究。2442344482@qq.com

通讯作者:
周真明(1981-),男,教授,主要研究方向为水环境修复理论与技术的研究。zhenming@hqu.edu.cn

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出版历程
- 收稿日期: 2022-11-28
- 网络出版日期: 2023-11-15

PREPARATION OF PHOSPHORUS REMOVAL MATERIAL BY CALCINATION OF WATER TREATMENT PLANT SLUDGE AND RIVER SILT AND ITS PERFORMANCE

1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China;
2. Xiamen Institute of Environmental Science, Xiamen 361021, China;
3. CCCC First Highway Xiamen Engineering Co., Ltd., Xiamen 361000, China

摘要

摘要: 为探索净水厂污泥(WTPS)与河道淤泥(RS)资源化利用新途径,研究了将其混合煅烧制备除磷材料(C-WTPS/RS)可行性,优化了原料混合比及煅烧温度,分析了C-WTPS/RS除磷性能的主要影响因素,探明了C-WTPS/RS除磷的吸附类型。结果表明:煅烧时间为1 h时,WTPS与RS最佳原料混合比(干重)为5∶5,最佳煅烧温度为600 ℃,制备得到C-WTPS/RS磷吸附量可达0.707 mg/g(正磷酸盐初始浓度为2 mg/L),且C-WTPS/RS不向水体释放氨氮和有机物。C-WTPS/RS除磷效果随着投加量的增加而提高;反应温度为15~25 ℃,C-WTPS/RS除磷效果随着反应温度的升高而提高,反应温度为25~35 ℃,C-WTPS/RS除磷效果受反应温度影响较小;C-WTPS/RS除磷效果在溶液pH为3~9范围较为稳定,溶液pH>9时,WTPS/RS除磷效果呈下降趋势;SO^2-₄、Cl^-和NO^-₃ 3种阴离子对C-WTPS/RS吸附磷的过程影响较小,HCO^-₃对C-WTPS/RS除磷效果有一定抑制作用。热力学分析表明,C-WTPS/RS对磷的吸附是自发的吸热过程,C-WTPS/RS对磷的吸附动力学过程更符合拟二级动力学模型,吸附等温线符合Langmiur吸附等温模型,表明C-WTPS/RS除磷过程主要为单分子层化学吸附,同时伴随物理吸附,理论饱和磷吸附量为6.26 mg/g。
- 除磷 /
- 净水厂污泥 /
- 河道淤泥 /
- 煅烧 /
- 吸附
Abstract: In order to explore a new way of resource utilization of water treatment plant sludge and river silt, this paper studied the feasibility of preparing phosphorus removal material (C-WTPS/RS) by calcination of their mixture. The mixing ratio of raw materials and calcination temperature were optimized, the main influencing factors of phosphorus removal performance of C-WTPS/RS were analyzed, and the adsorption mechanism of C-WTPS/RS for phosphorus removal was discussed. The results of optimization experiments showed that when the calcination time was 1h, the optimal mixing ratio (dry weight) of WTPS to RS was 5∶5, the optimal calcination temperature was 600 ℃, then the phosphorus adsorption capacity of C-WTPS/RS reached 0.707 mg/g (with an initial concentration of orthophosphate of 2 mg/L), and C-WTPS/RS did not release ammonia nitrogen and organic matter into the water. The phosphorus adsorption capacity of C-WTPS/RS increased with the increase in dosage. When the reaction temperature was within 15 to 25 ℃, the phosphorus adsorption capacity of C-WTPS/RS increased with the increase of the reaction temperature. When the reaction temperature was within 25 to 35 ℃, the phosphorus adsorption capacity of C-WTPS/RS was less affected by the reaction temperature. The phosphorus adsorption capacity of WTPS/RS was stable when the solution pH was 3~9, and the phosphorus adsorption capacity of WTPS/RS showed a downward trend when the solution pH was higher than 9. SO₄^2-, Cl^- and NO₃^- had little effect on the phosphorus adsorption of C-WTPS/RS, and HCO₃^- had a certain inhibitory effect on the phosphorus removal performance of C-WTPS/RS. Thermodynamic analysis showed that the adsorption of phosphorus by C-WTPS/RS was a spontaneous endothermic process, The phosphorus adsorption kinetics of C-WTPS/RS was more consistent with the quasi-second-order kinetic model, and the adsorption isotherms were consistent with the Langmuir adsorption isotherm model, indicating that the phosphorus removal process by C-WTPS/RS was mainly monolayer chemisorption, accompanied by physical adsorption, and the theoretical saturated phosphorus adsorption capacity was 6.26 mg/g.
- phosphorus removal /
- water treatment plant sludge /
- river sludge /
- calcination /
- adsorption

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参考文献(29)

[1]	SOK K,YUN H P,JAE B L,et al.Phosphorus adsorption behavior of industrial waste biomass-based adsorbent,esterified polyethylenimine-coated polysulfone-Escherichia coli biomass composite fibers in aqueous solution[J].Journal of Hazardous Materials,2020,400:123217.
[2]	YANG B,LIN H,Bartlett S L,et al.Partitioning and transformation of organic and inorganic phosphorus among dissolved,colloidal and particulate phases in a hypereutrophic freshwater estuary[J].Water Research,2021,196:117025.
[3]	尹炜,王超,张洪,等.长江流域总磷问题思考[J].人民长江,2022,53(4):44-52.
[4]	宋勇军,戚菁,刘立恒,等.程海湖夏冬季浮游植物群落结构与富营养化状况研究[J].环境科学学报,2019,39(12):4106-4113.
[5]	BROWN P,IKUMA K,ONG S K,et al.Biological phosphorus removal and its microbial community in a modified full-scale activated sludge system under dry and wet weather dynamics[J].Water Research,2022,217:118338.
[6]	MA H,GAO X L,CHEN Y H,et al.Fe(Ⅱ) enhances simultaneous phosphorus removal and denitrification in heterotrophic denitrification by chemical precipitation and stimulating denitrifiers activity[J].Environmental Pollution,2021,287:118338.
[7]	MA G S,CHEN J.Removal effects on nitrogen,phosphorus and COD in water body of Shanghu Lake ecological wetland in Taihu Lake watershed[J].Procedia Environmental Sciences,2011,10:2665-2670.
[8]	REN Y,ZHENG W,DUAN X,et al.Recent advances in electrochemical removal and recovery of phosphorus from water:a review[J].Environmental Functional Materials,2022,1(1):10-20.
[9]	ZHENG W,SUN Y,GU Y.Catalysis and adsorption of Zr-doped Fe₃O₄ nanoparticles provide a new strategy for diazinon removal and phosphorus recovery from aqueous solution[J].Journal of Environmental Chemical Engineering,2022,10(2):107153.
[10]	仇付国,孙瑶,陈丽霞,等.给水厂铝污泥特性分析及吸附氮磷性能试验[J].环境工程,2016,34(4):54-59.
[11]	朱元中,陶红,顾竹珺,等.底泥制备免烧结多孔材料对原水中磷的去除[J].净水技术,2017,36(2):78-82.
[12]	刘啟迪,周真明,张红忠,等.煅烧改性净水厂污泥制备除磷材料工艺参数优化[J].华侨大学学报(自然科学版),2018,39(1):51-56.
[13]	WU H F,WANG J P,DUAN E G,et al.Study on the preparation of granular alum sludge adsorbent for phosphorus removal[J].Water Sci Technol,2019,79(12):2378-2386.
[14]	肖继波,陈玉莹,瞿倩,等.高效除磷型底泥陶粒对水体中磷的去除特性[J].环境污染与防治,2018,40(10):1122-1125.
[15]	国家环境保护总局.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002.
[16]	LIU C J,LI Y Z,LUAN Z K,et al.Adsorption removal of phosphate from aqueous solution by active red mud[J].Journal of Environmental Sciences,2007,19(10):1166-1170.
[17]	TANTAWY M A.Characterization and pozzolanic properties of calcined alum sludge[J].Materials Research Bulletin,2015,61(1):415-421.
[18]	向速林,龚聪远,楚明航,等.Mg-Al-Cl^-LDH对磷的吸附性能及其机理[J].环境工程学报,2021,15(12):3865-3874.
[19]	李迎春,董良飞,仝驰,等.稀土改性凹凸棒土对低浓度磷的吸附性能[J].环境工程学报,2021,15(10):3214-3222.
[20]	ZHANG S P,DING J,TIAN D Y.Incorporation of MIL-101 (Fe or Al) into chitosan hydrogel adsorbent for phosphate removal:performance and mechanism[J].Journal of Solid State Chemistry,2022,306:122709.
[21]	简志强,周高婷,龚斌,等.微米零价铁去除磷酸盐效果与机理研究[J].环境工程技术学报,2021,11(5):927-934.
[22]	ASWIN K I,JEYASEELAN A,VISWANATHAN N,et al.Fabrication of lanthanum linked trimesic acid as porous metal organic frameworks for effective nitrate and phosphate adsorption[J].Journal of Solid State Chemistry,2021:122446.
[23]	熊承旺,段宁,陶敏,等.氢氧化镧大孔水凝胶对磷的吸附特征研究[J].环境科学与技术,2021,44(9):58-63.
[24]	段宁,吴依远,张银凤,等.硅藻土/沸石复合颗粒吸附材料脱氮除磷的吸附动力学及热力学分析[J].硅酸盐通报,2014,33(12):3151-3158.
[25]	王新宇,张卫民,王玉罡,等.活性炭负载纳米零价铁-羟基磷灰石的制备及其对Mn(Ⅱ)的吸附性能[J].有色金属(冶炼部分),2022(11):97-104.
[26]	曾凤美,孙丰文,孙恩惠,等.Fe₂O₃/PC功能化复合多孔炭材料的制备及除磷机理[J].环境科学学报,2021,41(9):3487-3496.
[27]	郑凯,蒋善庆,武福平,等.给水厂污泥陶粒制备及其对氮磷吸附研究[J].环境污染与防治,2020,42(1):35-38.
[28]	耿雅妮,任雪盈,巨龙,等.热改性铝污泥吸附除磷的动力学和热力学研究[J].应用化工,2018,47(7):1377-1381.
[29]	刘艳芳,高玮,尹思婕,等.铁、锆改性生物炭对水中磷的吸附特性及机理研究[J].工业水处理,2022,42(11):153-161.