中温高压条件对降滤失剂HY-S环境污染特性的影响  

INFLUENCE OF MODERATE TEMPERATURE AND HIGHPRESSURE CONDITIONS ON ENVIRONMENTAL HADARDOF A FILTRATE REDUCER HY-S

作　　者：肖鹏 杜国勇[1,2] 邓春萍 张益臣[3] 张琳婧 Xiao Peng;Du Guoyong;Deng Chunping;Zhang Yichen;Zhang Linjing(School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,Sichuan,China;Sichuan Key Laboratory of Applied Chemistry of Oil and Gas Fields,Chengdu 610500,Sichuan,China;Petrochina Zhejiang Oilfield Company,Luzhou 646000,Sichuan,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]油气田应用化学四川省重点实验室,四川成都610500 [3]中国石油浙江油田分公司,四川泸州646000

出　　处：《精细石油化工》2022年第6期19-23,共5页Speciality Petrochemicals

基　　金：中国石油-西南石油大学创新联合体科技合作项目(2020CX020000);油气田应用化学四川省重点实验室开放基金项目(YQKF202122);四川省自然科学基金项目(2022NSFSC1002)。

摘　　要：在90℃、7 MPa、40 min和120℃、11 MPa、40 min两种条件下分别对HY-S进行处理,测定了处理前后HY-S的生物降解性和生物毒性。通过傅里叶变换红外光谱(FT-IR)和热重分析(TGA)分析了处理前后的结构变化。通过土壤吸附与土壤淋溶实验研究了其在土壤中的迁移规律。结果表明,在两种处理条件下,HY-S的生物降解性和生物毒性并未发生显著改变,均为难生物降解或较难降解,生物毒性均为中毒,其结构未发生明显变化。土壤吸附实验与淋溶实验结果显示,沙土对处理前后的HY-S的吸附率分别为12.15%和14.7%,没有显著改变;淋溶处理前后的HY-S在沙土中第1次淋溶的淋出液在深度为18 cm的化学需氧量为9 273 mg/L和8 924 mg/L,说明处理前后的HY-S在土壤中的迁移规律没有明显变化,其进入土壤后的大部分会随着径流快速进入深层土壤及地下水,有污染地下水的风险。HY-S was treated under two medium temperature and high pressure conditions(90℃,7 MPa,40 min),and the biodegradability and biotoxicity of HY-S before and after treatment were measured.The structural changes before and after treatment were analyzed by Fourier transform infrared spectroscopy(FT-IR)and thermogravimetric analysis(TGA).The soil adsorption and leaching experiments were conducted to study its migration in soil.The results showed that under the two different treatment conditions,the biodegradability and biotoxicity of HY-S did not change significantly,which was difficult to biodegrade or relatively difficult to biodegrade,and the biotoxicity was poisoning.The results of FT-IR and TGA analysis showed that there was on obvious change in its structure.The results of soil adsorption experiment and leaching experiment showed that the adsorption rates of HY-S before and after treatment were 12.15%and 14.7%,respectively,without significant change.The results of leaching experiment showed that the chemical oxygen demand(COD Cr)of the first leaching solution of HY-S in sandy soil before and after treatment were 9273 mg/L and 8924 mg/L,respectively,at the depth of 18 cm,indicating that the migration law of HY-S in soil has no obvious change before and after treatment.After entering the soil,most of it will quickly enter the deep soil and groundwater with runoff,and there is a high risk of groundwater pollution.

关 键 词：降滤失剂 生物毒性 生物降解性 吸附 淋溶 

分 类 号：X53[环境科学与工程—环境工程]