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影响反渗透膜性能的主要因素有哪些

来源:/作者:admin/时间:2018-01-31
摘要:在实际使用过程中,反渗透膜元件的性能受诸多外界因素影响,主要有进水温度、压力、PH值等。因此在反渗透系统的设计和运行维护中,合理的利用这些环境因素,能使反渗透系统的运行处于..

ZAISHIJISHIYONGGUOCHENGZHONG,FANSHENTOUMOYUANJIANDEXINGNENGSHOUZHUDUOWAIJIEYINSUYINGXIANG,ZHUYAOYOUJINSHUIWENDU、YALI、PHZHIDENG。YINCIZAIFANSHENTOUXITONGDESHEJIHEYUNXINGWEIHUZHONG,HELIDELIYONGZHEIXIEHUANJINGYINSU,NENGSHIFANSHENTOUXITONGDEYUNXINGCHUYUXIANGDUIWENDING,FANGZHIXINGNENGBODONGDUIHOUXUGONGYIDEYINGXIANG。

影响反渗透膜性能的主要因素

进水温度

SUIJINSHUIWENDUDESHENGGAO,SHUIFENZIDEZHANDUJIANXIAO,ERYUNDONGSUDUZENGJIA,FANSHENTOUMODECHANSHUILIANGHUIZENGDA,TONGSHITUOYANLVHUILVEYOUXIAJIANG。TONGCHANGQINGKUANGXIA,FANSHENTOUMODEJINSHUIWENDUFANWEISHI5~ 45C,GUODIDEWENDUHUISHIXITONGJIEBINGDONGJIEDEFENGXIANZENGJIA,ERQIECHANSHUILIANGGUODI,JINGJIXINGNENGBIJIAOCHA,YINCIBUJIANYIZAISHUIWENDIYU5C QINGKUANGSHIQIDONGFANSHENTOUXITONG; ERGAOYU459C SHI。FANSHENTOUMODECHANSHUILIANGGUODA,ERQIEYOUWURANDEFENGXIAN。

TUOYANLVSHOUWENDUYINGXIANGBIANHUA,YOUYUWENDUSHANGSHENG,FENZIYUNDONGSUDUZENGJIA,HUIYOUGENGDUODEKERONGYANLIZISHENTOUDAOCHUNSHUIZHONG,ZAOCHENGTUOYANLVXIAJIANG。YIBANQINGKUANGXIA,TUOYANLVDEBIANHUA-BANBUHUICHAOGUO2%。

FANSHENTOUMODELIULIANGSHOUJINSHUIWENDUYINGXIANGHENDA,GENJUXINGYEGUANLI,MOYUANJIANDELIULIANGSHIANZHAOJINSHUIWENDU25"CSHICESHIDECHU,ERWENDUMEIXIAJIANGIC,MOYUANJIANDECHANSHUILIANGJIANGXIAJIANG3~ 3.5%。YUANYINSHIYOUYUWENDUSHENGGAO,SHUIFENZIDEZHANDUJIANXIAOERYUNDONGSUDUZENGJIA,SHIDESHUIFENZIGENGRONGYITOUGUOFANSHENTOUMO。

FANSHENTOUXITONGDEJINSHUIYALISHIYINGXIANGQIXINGNENGZUIZHUYAODECANSHU,FANSHENTOUMODECHANSHUILIANGHETUOYANLVJUNHUISUIYALIDESHENGGAOERSHENGGAO,YOUQISHICHANSHUILIANGDESHANGSHENGYOUQIMINGXIAN。

产水量=有效膜面积×温度校正系数A×净压力×膜片水渗透系数

净压力=泵压-渗透压-跨膜压力损失

TONGCHANGQINGKUANGXIA,FANSHENTOUMOSHENGCHANWANCHENGHOU,YOUXIAOTUOMIANJIHEMOPIANSHENTOUXISHUJIUYIJINGQUEDING,YINCI,ZAIQITAJINSHUITIAOJIANBUBIANDEQINGKUANGXIA,MOYUANJIANDECHANSHUILIANGZHISHOUJINGYALIDEYINGXIANG,JINGYALIYOUYUBENGYAYOUGUAN,YINCIMOYUANJIANCHANSHUILIANGYUJINSHUIYALIXINGXIANXINGSHANGSHENGGUANXI。CHAOGUOYIDINGDEYALIZHI,TUOYANLVBUZAIZENGJIA,MOUXIEYANFENHAIHUIYUSHUIFENZIOUHEYITONGTOUGUOMO。

TUOYANLVYESHOUJINSHUIYALIDEYINGXIANG,YIFANGMIANSHIFANSHENTOUMODETOUYANLVSHIHENGDINGDE,QIGONGSHIRUXIA:

透盐量=膜两侧盐浓度差×温度校正系数B×膜片盐渗透系数×有效膜面积

LINGYIFANGMIAN,YALIDESHANGSHENGZAOCHENGCHANSHUILIANGZENGDA,CONGERXISHILETOUGUODEYANFEN。SHICHANSHUIHANYANLIANGJIANGDI,TIGAOLETUOYANLV。YILP4040 MOYUANJIANWEILI,XIABIAOSHIBUTONGJINSHUIYALIXIADECHANSHUILIANGHETUOYANLV:

进水TDS

JINSHUIHANYANLIANGYEHUIYINGXIANGMOYUANJIANDEXINGNENG。YOUYUJINSHUIHANYANBUTONG。QISHENTOUYAYEBUTONG,JIANJIEYINGXIANGLEXITONGDEJINGYALI,ZHIJIEDAOZHICHANSHUILIANGXIAJIANG,DANXIANGDUIYUYALIDUICHANSHUILIANGDEYINGXIANG,JINSHUIHANYANLIANGDUICHANSHUILIANGDEYINGXIANGJIAOXIAO。CHUHAISHUIDANHUAMOWAI,TONGCHANGQINGKUANGXIAJINSHUIHANYANLIANGMEISHANGSHENG200mg L,CHANSHUILIANGJIANG1%ZUOYOU,

JINSHUIHANYANLIANGSHANGSHENGHUISHIDEFANSHENTOULIANGCEDEYANNONGDUCHAZENGDA,ERQIEHUIJINYIBUZENGCHAJIHUAXIANXIANG,SHIDEYANTOUGUOLIANGSHANGSHENG,TUOYANLVXIAJIANG。TONGCHANGQINGKUANGXIA,JINSHUIHANYANLIANGZENGJIAYIBEI。CHANSHUIHANYANLIANGHUIZENGDAOYUANXIANNONGDUDE2.5~3 BEI,TUOYANLVXIAJIANGYUE0.2~0.5%。

YINaCl WEILI:SHENTOUYA(psi)= NONGDU(mg/L)×0.01

进水PH 值

1)盐浓度的影响

SHENTOUYASHISHUIZHONGSUOHANYANFENHUOYOUJIWUNONGDUHEZHONGLEIDEHANSHU,YANNONGDUZENGJIA,SHENTOUYAYEZENGJIA,YINCIXUYAONIZHUANZIRANSHENTOULIUDONGFANGXIANGDEJINSHUIQUDONGYALIDAXIAOZHUYAOQUJUEYUJINSHUIZHONGDEHANYANLIANG。RUGUOYALIBAOCHIHENGDING,HANYANLIANGYUEGAO,TONGLIANGJIUYUEDI,SHENTOUYADEZENGJIADIXIAOLEJINSHUITUIDONGLI,SHUITONGLIANGJIANGDI,ZENGJIALETOUGUOMODEYANTONGLIANG(JIANGDILETUOYANLV)。

2) 回收率的影响

TONGGUODUIJINSHUISHIJIAYALIDANGYIRONGYEHEXIRONGYEJIANDEZIRANSHENTOULIUDONGFANGXIANGBEINIZHUANSHI,SHIXIANFANSHENTOUGUOCHENG。RUGUOHUISHOULVZENGJIA(JINSHUIRILIHENGDING),CANLIUZAIYUANSHUIZHONGDEHANYANLIANGGENGGAO,ZIRANSHENTOUYAJIANGBUDUANZENGJIAZHIZHIYUSHIJIADEYALIXIANGTONG,ZHEIJIANGDIXIAOJINSHUIXINGLIDETUIDONGZUOYONG,JIANMANHUOTINGZHIFANSHENTOUGUOCHENG。SHISHENTOUTONGLIANGJIANGDIHUOXIANZHITINGZHI。ROXITONGZUIDAKENENGHUISHOULVBINGBUYIDINGQUJUEYUSHENTOUZHANGDEXIANZHI,WANGWANGQUJUEYUYUANSHUIZHONGDEHANYANLIANGHETAMENZAIMOMIANSHANGYAOFASHENGCHENDIANDEQINGXIANG。ZUICHANGJIANDEWEIRONGYANLEISHITANSUANGAI、LIUSUANGAIHEGUI,YINGGAICAIYONGYUANSHUIHUAXUECHULIFANGFAZUZHIYANLEIYINMODENONGSUOGUOCHENGYINFADEJIEGOU,

3) pH值的影响

GEZHONGFANSHENTOUHEDESUMOYUANJIANSHIYONGDEHZHIFANWEIXIANGCHAHENDA。XIANGBW XILICHAOBOFUHEFANSHENTOUYUYIGANXIANWEISUFANSHENTOUHENAYOUSHOUXIANGBI,ZAIGENGKUANGUANGDEDH ZHIFANWEINEIGENGWENDING,YINMIAN,JUYOUGENGKUANDECAOZUOFANYONG。

SUZHOUHUAMOHUANBAOKEJIYOUXIANGONGSI|SHUZHI、LVXIN、ZUGOUJI、CHAOLVMO、NALVMO、FANSHENTOUMO-SHUICHULIHAOCAICAIGOU/PIFA

DIZHI:JIANGSUSHENGKUNSHANSHIKAIFAQUQIANJINDONGLU287HAO509SHI。 LIANXIFANGSHI:185 5057 6906

YIZHANSHICAIGOUFUWU BANQUANSUOYOU@SUZHOUHUAMOHUANBAOKEJIYOUXIANGONGSI

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