全膜系统反渗透膜化学清洗技术在火电厂的应用

2020/2/26全膜系统反渗透膜化学清洗技术在火电厂的应用https://x.cnki.net/read/article/xmlonline?filename=SCLJ201907028&tablename=CJFDTOTAL&dbcode=CJFD&topic=&fileSourceType=1&taskId=&…1/5水处理技术,2019,07,122-124全膜系统反渗透膜化学清洗技术在火电厂的应用ApplicationofReverseOsmosisMembranesChemicalCleaningTechnologyonHeat-EnginePlantinWholeMembraneSystemSHENJunfengSHICunjunSHENJianGENGYanHuizhouShenzhenEnergyFengdaPowerCo.,LtdShenzhenEnergyHopewellPower(Heyuan)Co.,Ltd申军锋师存君沈健耿妍惠州深能源丰达电力有限公司深能合和电力(河源)有限公司摘要:分析了全膜系统反渗透膜的污染成因,介绍了对应的排查措施及对应清洗方法选择,并以某火电厂全膜系统反渗透膜为例,针对其在原水水质较好的情况下,出现段间压差升高的情况,按照介绍方法进行排查,确定其压差高是前段管道腐蚀、加药量不够等原因,造成铁锈、无机盐以及生物黏泥堆积。选用EDTA碱洗与柠檬酸酸洗结合的清洗方案,清洗后反渗透膜性能恢复明显,一段压差从0.35MPa降到了0.15MPa,产水量和除盐率均基本达到了膜初始参数。关键词:反渗透膜污染成因化学清洗应用作者简介：申军锋(1984-),男,从事电厂化学工作;联系电话:0752-2598924;电子邮件:shenjunfeng@sec.com.cn收稿日期：2018-09-10Abstract：Thecausesofreverseosmosismembranefoulinginthewholemembranesystemwereanalyzed,andthecorrespondingmeasuresforinvestigationandtheselectionofcorrespondingcleaningmethodswereintroduced.Takingthereverseosmosismembraneinthewholemembranesystemofafactoryasanexample,inviewofthesituationthatthepressuredifferencebetweensectionsriseswhentherawwaterqualitywasgood,accordingtotheintroductionmethod,itwasdeterminedthatthepressuredifferencewasduetothecorrosionofthefrontsectionpipelineandtheinsufficientdosage.Becauseoftheaccumulationofrust,inorganicsaltsandbio-clay,EDTAalkaliwashingcombinedwithcitricacidpicklingwasselectedascleaningscheme.Aftercleaning,theperformanceofreverseosmosismembranerecoveredobviously.Thepressuredifferenceofonestagedecreasedfrom0.35MPato0.15MPa,andthewateryieldanddesalinationratebasicallyreachedtheinitialparametersofthemembrane.Keyword：reverseosmosismembranes，foulingfactors，chemicalcleaning，applicationReceived：2018-09-102020/2/26全膜系统反渗透膜化学清洗技术在火电厂的应用https://x.cnki.net/read/article/xmlonline?filename=SCLJ201907028&tablename=CJFDTOTAL&dbcode=CJFD&topic=&fileSourceType=1&taskId=&…2/51反渗透膜污染的排查2结果与讨论2.1清洗依据2.2方法及药剂选择反渗透技术日趋成熟,其在水处理行业中的应用越来越广泛,尤其是除盐水制备、废水处理和浓缩回收等领域。反渗透膜在运行过程中,必然会因多种外界因素和原因最终导致发生结