Effect of the released soil colloids on the interception of heavy metals during runoff infiltration
DU Xiao-li1,2, LIU Dian-wei1, CUI Shen-shen1
1. Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2. Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing 100044, China
Abstract:Black soil in Jilin, loess soil in Beijing and sandy soil in Hebei were used as the media in the simulated infiltration columns. Effect of the released soil colloids on the interception of heavy metals under the conditions of pH, flow velocity and ionic strength in influent was investigated, and the mechanisms were also detected. The results showed that the electrostatic repulsion between the soil colloids and soil particles was the main factor affecting the release of soil colloids, and the highest concentrations of the released colloids were 216.5, 182.4 and 272.2mg/L for black soil, loess soil and sandy soil at pH 7.0, respectively. The concentration of the released soil colloids was significantly negatively correlated with the amount of heavy metals intercepted in the infiltration columns (r>0.70, P<0.05). The lower pH and higher flow rate of the influent, the lower the amount of heavy metals retained in the columns and the more the amount of heavy metals carried by soil colloids to migrate. The higher concentration of Na+ in influent, the less soil colloids was released and the easier the heavy metals were retained in the soils. Compared with the other two soil colloids, the black soil colloids had higher absolute zeta potential, higher stability and higher mobility, and were more capable of carrying heavy metals to migrate.
杜晓丽, 刘殿威, 崔申申. 径流入渗时土壤胶体释放对重金属截留的影响[J]. 中国环境科学, 2022, 42(3): 1278-1286.
DU Xiao-li, LIU Dian-wei, CUI Shen-shen. Effect of the released soil colloids on the interception of heavy metals during runoff infiltration. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(3): 1278-1286.
杜晓丽,韩强,于振亚,等.海绵城市建设中生物滞留设施应用的若干问题分析[J].给水排水, 2017,43(1):54-58.Du X L, Han Q, Yu Z Y, et al.Some issues of the bioretention application in sponge city construction[J].Water& Wastewater Engineering, 2017,43(1):54-58.
[2]
刘雨童,李田,彭航宇.生物滞留设施去除城市道路径流中邻苯二甲酸酯的效果评估[J].环境科学学报, 2018,38(7):2568-2574.Liu Y T, Li T, Peng H Y.Removal efficiency of phthalates in urban highway runoff in Shanghai by a bioretention system[J].Acta Scientiae Circumstantiae, 2018,38(7):2568-2574.
[3]
Tone M M, Maria V, Nina G, et al.Heavy metal removal in cold climate bioretention[J].Water, Air, and Soil Pollution, 2007,183(1-4):391-402.
[4]
Jongmuk W, Xenia W, Susan E B.An experimental study of cotransport of heavy metals with kaolinite colloids[J].Journal of Hazardous Materials, 2019,373:476-482.
[5]
张蓉蓉,蒋代华,史鼎鼎,等.岩溶区棕色石灰土胶体对镉铅的等温吸附特性研究[J].农业环境科学学报, 2020,39(3):554-562.Zhang R R, Jiang D H, Shi D D, et al.Isothermal adsorption of cadmium and lead by brown calcareous soil colloids in a Karst Area[J].Journal of Agro-Environment Science, 2020,39(3):554-562.
[6]
Liu G N, Xue W, Wang J, et al.Transport behavior of variable charge soil particle size fractions and their influence on cadmium transport in saturated porous media[J].Geoderma, 2019,337:945-955.
[7]
商书波.包气带中的土壤可移动胶体及对重金属迁移影响的研究[D].长春:吉林大学, 2008.Shang S B.Study on the impact of Soil Colloid on Heavy Metals Migration in Vadose Zone[D].Changchun:Jilin University, 2008.
[8]
Du X L, Zhu Y J, Han Q, et al.The influence of traffic density on heavy metals distribution in urban road runoff in beijing, china[J].Environmental Science and Pollution Research, 2019,26:886-895.
[9]
Du X L, Liang H, Fang X.Characteristics of colloids and their affinity for heavy metals in road runoff with different traffic in beijing, china[J].Environmental Science and Pollution Research International, 2021,28(16):20082-20092.
[10]
Wang J L, Zhao Y L, Yang L Q, et al.Removal of heavy metals from urban stormwater runoff using bioretention media mix[J].Water, 2017,9(11):854-876.
[11]
Song Y H, Dai H M, Yang F C, et al.Temporal and spatial change of soil organic matter and ph in cultivated land of the songliao plain in northeast china during the past 35years[J].Acta Geologica Sinica:English Edition, 2019,93(supp.l):142-143.
[12]
Yan C R, Cheng T, Shang J Y.Effect of bovine serum albumin on stability and transport of kaolinite colloid[J].Water Research, 2019, 155:204-213.
[13]
商书波,王丰雨,李绪谦.土壤胶体理化性质对其稳定性和可移动性的影响研究[J].土壤, 2010,42(6):1015-1019.Shang S B, Wang F Y, Li X Q.Study on Stability and Mobility of Soil Colloids Based on Physicochemical Property[J].Soils, 2010,42(6):1015-1019.
[14]
Sun Y L, Pan D Q, Wei X Y, et al.Insight into the stability and correlated transport of kaolinite colloid:Effect of ph, electrolytes and humic substances[J].Environmental Pollution, 2020,266:115-189.
[15]
Luo X H, Yu L, Wang C Z, et al.Sorption of vanadium (v) onto natural soil colloids under various solution ph and ionic strength conditions[J].Chemosphere, 2017,169:609-617.
[16]
王芳婷,陈植华,包科,等.Ph值对海陆交互相土壤镉纵向迁移转化的影响[J].中国环境科学, 2021,41(1):335-341.Wang F T, Chen Z H, Bao K, et al.Effects of pH on vertical migration of cadmium in the sea land interaction zone[J].China Environmental Science, 2021,41(1):335-341.
[17]
Tushar K S, Mahajan S P, Kartic C K Colloid-associated contaminant transport in porous media:1.Experimental studies[J].AIChE Journal, 2002,48(10):2375-2385.
[18]
郭微.溶解性有机质对不同类型土壤吸附Cu2+和Pb2+的影响机制研究[D].济南:山东大学, 2011.Guo W.The effect mechanism of dissolved organic matter on Cu2+ and Pb2+ adsorption by different types of soil[D].Jinan:Shandong University, 2011.
[19]
Jongmuk W, Susan E B.Role of immobile kaolinite colloids in the transport of heavy metals[J].Environmental Science Technology, 2018,52(5):2735-2741.
[20]
Štandeker S, Novak Z,Željko K.Adsorption of toxic organic compounds from water with hydrophobic silica aerogels[J].Journal of Colloid and Interface Science, 2007,310(2):362-368.
[21]
Rehab M A, Hesham A H, Mohamed M H, et al.Potential of using green adsorbent of heavy metal removal from aqueous solutions:Adsorption kinetics, isotherm, thermodynamic, mechanism and economic analysis[J].Ecological Engineering, 2016,91:317-332.
[22]
Li Z J, Deng S B, Yu G, et al.As (v) and as (iii) removal from water by a ce-ti oxide adsorbent:Behavior and mechanism[J].Chemical Engineering Journal, 2010,161:106-113.
[23]
卢胜.湖北几种地带性土壤颗粒的物质组成与表面化学性质[D].武汉:华中农业大学, 2015.Lu S.The composition and surface chemical properties of several kinds of zonal soil in Hubei Province[D].Wuhan:Huazhong Agricultural University, 2015.