缓释氧复合材料不同投加方式对沉积物-水界面污染物迁移的影响

郭鹏飞; 董子义; 王颖; 付军; 王京刚; 刘娴静

doi:10.13205/j.hjgc.202105001

缓释氧复合材料不同投加方式对沉积物-水界面污染物迁移的影响

doi: 10.13205/j.hjgc.202105001

1. 北京化工大学化学工程学院, 北京 100029;
2. 北京师范大学环境学院, 北京 100048;
3. 中日友好环境保护中心, 北京 100029

基金项目:

国家水体污染控制与治理科技重大专项（2018ZX07110004）。

详细信息

作者简介:
郭鹏飞(1996-),男,硕士研究生,主要研究方向为水污染控制工程。15561109362@163.com

通讯作者:
王颖(1978-),女,副教授,主要研究方向为水污染控制与水质净化新技术。yingwang@bnu.edu.cn

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出版历程
- 收稿日期: 2020-07-24
- 网络出版日期: 2022-01-17

EFFECTS OF DIFFERENT DOSING METHODS OF SLOW-RELEASE OXYGEN COMPOSITE MATERIALS ON THE MIGRATION OF POLLUTANTS AT THE SEDIMENT-WATER INTERFACE

1. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2. College of Environment, Beijing Normal University, Beijing 100048, China;
3. Sino-Japan Friendship Centre for Environmental Protection, Beijing 100029, China

摘要

摘要: 为改善湖泊沉积物-水界面生境，开发了一种可原位供氧同时削减内源氮释放的缓释氧材料。发现以m（CaO₂）：m（白土）：m（水泥）=2：1：1制备的缓释氧材料具有较好的释氧和pH缓冲能力。通过模拟实验比较缓释氧材料不同投加方式（表层投加和泥内投加）对释氧和沉积物中污染物释放的影响。结果表明：1）表层投加缓释氧材料使得上覆水中DO浓度和pH值明显升高，而在泥内投加可以使pH值维持在7.5以内，同时DO浓度缓慢增加，延长了释氧周期；2）缓释氧材料对沉积物中NH₄⁺-N释放有显著的抑制作用，且表层投加方式明显高于泥内投加，以空白组作参比，静态培养31 d后，泥内加入缓释氧材料对NH₄⁺-N的抑制率为53.4%，而表层投加对NH₄⁺-N的抑制率达到81.1%，投加释氧材料有利于提高上覆水DO水平，促进硝化细菌的生长，从而抑制NH₄⁺-N的释放；3）缓释氧材料有利于微生物生长，促进了微生物腐殖化作用，从而对沉积物中类陆源腐植酸的释放略有促进，而对类酪氨酸蛋白释放略有抑制；4）缓释氧材料可促进沉积物中Fe/Al-P向Ca-P转化，对DIP的释放略有抑制，但由于pH增加导致沉积物中DOC以及重金属As和Cr的释放略有增加。
- 缓释氧材料 /
- 氧剖面 /
- 氮磷释放 /
- DOM /
- 重金属 /
- 分级磷
Abstract: In order to improve the lake sediment-water interface habitat, a slow-release oxygen material that can supply oxygen in situ and reduce the release of endogenous nitrogen was developed. The slow-release oxygen material prepared with CaO₂:white clay:cement=2:1:1 (mass ratio) had good oxygen release and pH buffering capability. The simulation experiment compared the effects of different dosing methods of slow-release oxygen materials (surface dosing and in-mud dosing) on the release of oxygen and the release of pollutants in the sediments. The results showed that:1) the DO concentration and pH value of the overlying water were significantly increased by surface dosing, and in-mud dosing could maintain the pH value within 7.5, while the DO concentration increased slowly, prolonging the oxygen release period; 2) slow-release oxygen materials had a significant inhibitory effect on release of NH₄⁺-N in the sediment, and surface dosing was significantly effective than in-mud dosing. Taking the blank group as the reference, after 31 days of static culture, the inhibition rate of NH₄⁺-N by adding slow-release oxygen material into the mud was 53.4%, and that of the surface dosing was 81.1%. Adding oxygen-releasing materials increased the level of DO in the overlying water and promoted the growth of nitrifying bacteria, thereby inhibiting the release of NH₄⁺-N; 3) slow-release oxygen materials were beneficial to microorganisms growth which promoted the humification of microorganisms, thereby slightly promoted the release of terrestrial-like humic acids in the sediments, while slightly inhibited the release of tyrosine-like proteins; 4) slow-release oxygen materials could promote the conversion of Fe/Al-P to Ca-P in the sediment which slightly inhibited the release of DIP, but the release of DOC and arsenic and chromium in the sediment increased slightly, due to the increase of pH.
- oxygen release material /
- oxygen profile /
- nitrogen and phosphorus release /
- DOM /
- heavy metals /
- graded phosphorus

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参考文献(26)

[1]	张启超,杨鑫,孙淑雲,等.过氧化钙在处理厌氧底泥中的应用初探[J].湖泊科学,2015,27(6):1087-1092.
[2]	黄荣才,梁艺丰,丁国良,等.缓释氧复合材料对上覆水中污染物去除和碱度硬度的影响[J].台州学院学报,2019,41(3):42-47.
[3]	周婧. 基于净水污泥缓释过氧化钙材料的制备及其抑制内源磷释放的效果[D].苏州:苏州科技大学,2019.
[4]	王妙,张华俊,陈海峰,等.沸石联合过氧化钙对黑臭河道底泥营养盐释放的作用研究[J].广东化工,2017,44(4):36-37.
[5]	黄靖宇,徐佳,李传龙,等.缓释氧剂的制备及其在黑臭水体治理方面的应用研究[J].现代化工,2018,38(12):165-169.
[6]	李亮,武成辉,林翰志,等.复合释氧剂的制备及其对水体修复的作用[J].环境工程,2017,35(9):1-6 ,191.
[7]	LIU C Y, SPEITEL G E, GEORGIOU G. Kinetics of methyl t-butyl ether cometabolism at low concentrations by pure cultures of butane-degrading bacteria[J]. Applied & Environmental Microbiology, 2001, 67(5):2197-2201.
[8]	LIU S J, JIANG B, HUANG G Q, et al. Laboratory column study for remediation of MTBE-contaminated groundwater using a biological two-layer permeable barrier[J]. Water Research, 2006, 40(18):3401-3408.
[9]	LIN C W, WU C H, TANG C T, et al. Novel oxygen-releasing immobilized cell beads for bioremediation of BTEX-contaminated water[J]. Bioresource Technology, 2012, 124:45-51.
[10]	国家环境保护总局, 水和废水监测分析方法编委会.水和废水监测分析方法[M].4版. 北京:中国环境科学出版社,2002:243-250,254-257 ,670-671.
[11]	YANG W Q, XIAO H, LI Y, et al. V ertical distribution and release characteristics of phosphorus forms in the sediments from the river inflow area of Dianchi Lake, China[J]. Chemical Speciation & Bioavailability, 2018, 30(1):14-22.
[12]	郭晨辉,李和祥,方芳,等.钼锑抗分光光度法对黄河表层沉积物中磷的形态分布及其吸附-解吸特征研究[J].光谱学与光谱分析,2018,38(1):218-223.
[13]	韩琦,薛爽,刘影,等.河流底泥中溶解性有机物的释放途径及影响因素研究[J].中国环境科学,2016,36(12):3737-3749.
[14]	ALBA G R,ANDREA B. Hydrological conditions regulate dissolved organic matter quality in an intermittent headwater stream. From drought to storm analysis[J]. Science of the Total Environment,2016,571:1358-1369.
[15]	ADAM Z,ERIK B,MIGUEL J, et al. Differentiating with fluorescence spectroscopy the sources of dissolved organic matter in soils subjected to drying[J]. Chemosphere,1999,38(1):45-50.
[16]	PARLANTI E, WÖRZ K, GEOFFROY L, et al. Dissolved organic matter fluorescence spectroscopy as a tool to estimate biological activity in a coastal zone submitted to anthropogenic inputs[J]. Organic Geochemistry,2000,31(12):1765-1781.
[17]	谷雨.污水处理中硝化细菌生存的影响因素分析[J].江西化工,2020(3):130-132.
[18]	夏德春,郑翔,吕树光,等.过氧化钙缓释材料对河道水固磷及底泥控磷的机理研究[J].环境污染与防治,2020,42(5):553-557 ,564.
[19]	ARIENZO M. Degradation of 2,4,6-trinitrotoluene in water and soil slurry utilizing a calcium peroxide compound[J]. Chemosphere,2000,40(4):331-337.
[20]	韩琦,薛爽,刘影,等.河流底泥中溶解性有机物的释放途径及影响因素研究[J].中国环境科学,2016,36(12):3737-3749.
[21]	WILLIAM P J,BRUCE E L. Enhanced transport of bacteria in porous media by sediment-phase and aqueous-phase natural organic matter[J]. Water Research,1996,30(4):923-931.
[22]	GAO L, FAN D D, LI D J, et al. Fluorescence characteristics of chromophoric dissolved organic matter in shallow water along the Zhejiang coasts, southeast China[J]. Marine Environmental Research, 2010, 69(3):187-197.
[23]	陈静生,周家义.中国水环境重金属研究[M].北京:中国环境科学出版社, 1992.
[24]	李世玉,刘彬,杨常亮,等.上覆水pH值和总磷浓度对含铁盐的高砷沉积物中砷迁移转化的影响[J].湖泊科学,2015,27(6):1101-1106.
[25]	童秀娟. 微生物对渭河河床沉积物-水界面Cr迁移转化的作用机理[D].西安:长安大学,2018.
[26]	SCHIMEL D, MELILLO J, TIAN H, et al. Contribution of increasing CO₂ and climate to carbon storage by ecosystems in the United States[J]. Science, 2000, 287(5460):2004-2006.