摘要
以含氢硅油、烯壬基酚聚醚与甲基丙烯酸十二酯为原料制备了一种梳型改性聚硅氧烷稠油破乳剂(GPX1),并用FTIR、1HNMR、单滴法、表面张力法、微生物降解法对聚合物GPX1进行了表征和测试。结果表明,液膜的破裂速率常数k含GPX1的自来水=0.257 46,高于k含SP169的自来水=0.218 84,说明GPX1能够有效降低液膜稳定性,加快液膜的排液速率。微生物降解性能测试结果表明,投加90 mg/L的GPX1于耗氧活性污泥中,24 h后体系中COD降到24.8 mg/L,低于空白值33.4 mg/L。破乳性能测试结果表明,GPX1与腰果酚胺醛树脂按质量比4∶6可得出最佳复配破乳剂FW1,再将100 mg/L FW1、80 mg/L聚合氯化铝与3 mg/L阳离子聚丙烯酰胺(CPAM)进行复配,对制备的乳状液破乳效果达到最佳,脱水率可达到98.32%,污水含油量为19.7 mg/L,油水界面整齐。
A kind of comb-type modified polysiloxane heavy oil demulsifier（GPX1） was prepared by using hydrogen silicone oil,olefinic nonyl phenol polyether and lauryl methacrylate,and characterized by FTIR,1 HNMR,single drop method,surface tension and microbial degradation performance test.The result revealed that the liquid membrane cracking rate constant k of running water containing GPX1 was0.257 46,higher than that of running water containing SP169（0.218 84）,which indicated that GPX1 could effectively reduce the stability of liquid membrane and accelerate the drainage rate of membrane.The microbial degradation performance tests showed that when 90 mg/L GPX1 was added into oxygen consumption activated sludge,the COD of system dropped to 24.8 mg/L after 24 h,below the blank value（33.4 mg/L）,thus the COD degradation of system had almost finished.The demulsification performance tests showed that the best combinational demulsifier FW1 was obtained by mixing GPX1 with cardanol phenol-amine aldehyde resin with a mass ratio of 4 ∶ 6.In addition,the mixture of 100 mg/L FW1,80 mg/L polyaluminum chloride and 3 mg/L CPAM had the best demulsification performance for the preparing emulsion,the dehydration rate reached 98.32%,the oil content of the waste water was 19.7 mg/L,and the oil-water interface was neat.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2017年第11期1301-1307,共7页
Fine Chemicals
基金
陕西省科技统筹创新工程计划项目(2014KTCL01-09)
陕西省教育厅科学研究计划项目(2013JK0692
2013JC21)~~
