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聚合硫酸铁的制备及在造纸废水处理中的应用

发布时间:2020-08-07     浏览次数:

ZHAIYAO:DUIYONGLIUTIEKUANGSHAOZHAZHIBEIJUHELIUSUANTIEJINXINGLEYANJIU,KAOCHALEYINGXIANGSHAOZHASUANJIN、SHUIJIEJUHEJIWENDINGXINGDEGEZHONGYINSU。ZHONGSHIJIEGUOBIAOMING,ZAISHIYANTIAOJIANXIA,KEYIDEDAOBIZHONGWEI1.58g/mLNONGDUWEI180g/LDEZONGSEZHANCHOUGAONONGDUHEGAOWENDINGXINGDEYETIJUHELIUSUANTIECHANPIN。YONGQIDUIZAOZHIFEISHUICHULISHI,CODcrDEQUCHULVKEDA80%。

YINYAN

聚合硫酸铁是70年代末发展起来的一种高效无机高分子混凝剂,其化学式为[Fe2(OH)n(SO4)3-n/2m。因其与硫酸铝、聚合氧化铝混凝剂相比絮凝体大、沉降速度快pH适应范围广,不产生1二次污染等特点,被广泛应用于工业废水和自来水原水的混凝处理中。目前聚合硫酸铁的生产一般用硫酸亚铁为原料,在催化氧化的条件下使亚铁转化为高价铁经水解聚合得到产品。此方法在催化氧化的过程中周期长、工艺复杂产品成本较高同时还易产生氨氧化物的二次污染。

广西快8遗漏数据 BOTAOJUHELVHUALVCHANGJIA,YILIUTIEKUANGSHAOZHAWEIYUANLIAOJINGSUANRONG、SHUIJIEJUHEDEDAOJUHELIUSUANTIE。BENFANGFASHENGCHANZHOUQIDUAN、CHENGBENDIHEWUERCIWURAN。JIEGUOBIAOMING,YONGGAIFANGFASHENGCHANDEYETIJUHELIUSUANTIEZHONGSHICHANPINWENDINGXINGNENGHAO;ZAIZAOZHIZHONGDUANFEISHUIZHONGJUYOULIANGHAOHUNNINGXIAOGUO。ZHEIWEILIUSUANSHAOZHADEZONGHELIYONGTIGONGLEYITIAOXIAODETUJING,DADAOLEYIFEIZHIFEI、BIANFEIWEIBAODEMUDE。

1、SHIYANBUFEN

广西快8遗漏数据 1.1 YUANLIAOJISHEBEI

ZHUYAOYUANLIAO:LIUTIEKUANGSHAOZHAHANYANGHUATIE75%、ERYANGHUAGUI15%;GONGYELIUSUAN92.5%;ZHUJUWENDINGTIANJIAJIDENG。

主要设备:10L三颈玻璃烧瓶;0.2m3反应釜;板框压滤机等。

1.2JUHELIUSUANTIEDEZHIBEI

广西快8遗漏数据 JIANGSHUI 、NONGLIUSUANHELIUTIEKUANGSHAOZHAANBILIYICIJIARUDAOFANYINGQIZHONG,ZAIJIAREJIAOBANDETIAOJIANXIADUISHAOZHAJINXINGSUANRONG,FANYINGJIEHOUJIARUZHUJUJI,ZAIYIDINGDEWENDUXIAJINXINGSHUIJIEJUHE,ZHIHOUGUYEFENLI,YIBUDEDAOJUHELIUSUANTIEYETICHANPIN。

1.3FEISHUIHUNNINGCHULISHIYAN

ZAOZHIZHONGDUANFEISHUIDEHUNNINGCHULIZAISC958XINGHUNNINGSHIYANJIAOBANJISHANGJINXING。ANYIDINGDEBILIZAI100mLDESHAOBEIZHONGYICIJIARUFEISHUIHEHUNNINGJI,XIANYI200r/minKUAISUJIAOBAN1min ,ZAIYI60r/minMANJIAO10min,RANHOUJINGZHI15min,YONGQUYEQIQUSHANGQINGYEANBIAOZHUNFANGFACECODcr。

2、JIEGUOYUTAOLUN

广西快8遗漏数据 2.1YINGXIANGTIERONGCHULVDEYINSU

ZAIZHIBEIJUHELIUSUANTIEDEGUOCHENGZHONGLIUTIEKUANGSHAOZHAYULIUSUANFANYINGTIAOJIANDEXUANZEFEICHANGZHONGYAO,TAGUANXIDAOLIUTIEKUANGSHAOZHAZHONGTIEDERONGCHULVLIUSUANDELIYONGLVHESUANRONGFANYINGSUDU。SHIYANBIAOMING,YINGXIANGSUANRONGDEZHUYAOYINSUYOUFANYINGTIXIDEWENDUFANYINGSHIJIANLIUSUANNONGDUHEYEGUBI。ZAIKONGZHILIUSUANNONGDUHEYEGUBIWEI3:(0.5~2)DETIAOJIANXIA,TIEDERONGCHULVSUIFANYINGWENDUHEFANYINGSHIJIANDEBIANHUAJIANBIAO1HEBIAO2。

BIAO1 WENDUDUITIERONGCHULVDEYINGXIANG

温度/℃ 50 65 90 100 110 120
溶出率/% 40.4 50.5 70.5 77.5 88.0 94.2

BIAO1SHIZAIGUDINGLIUSUANNONGDUWEI35~85%HEFANYINGSHIJIANWEI4hDETIAOJIANXIA,SUANRONGGUOCHENGZHONGTIERONGCHULVYUTIXIWENDUDEGUANXI。YOUBIAO1KEZHI,TIERONGCHULVSHOUTIXIWENDUDEYINGXIANGJIAODA,ZAI50~120℃DEWENDUFANWEINEI,TIERONGCHULVSUIWENDUDESHENGGAOERJIADA。DANGWENDUDADAO120℃ZUOYOUSHIFANYINGSUDUJIAOKUAI,CISHITIERONGCHULVKEGAODA9%YISHANG。

BIAO2 FANYINGSHIJIANDUITIERONGCHULVDEYINGXIANG

反应时间/h 1 2 3 4 5
溶出率/% 41.4 54.7 68.7 88.0 91.5

BIAO2SHIZAIGUDINGLIUSUANNONGDUHEFANYINGWENDUWEI110±℃DETIAOJIANXIA,KAOCHAFANYINGSHIJIANDUITIERONGCHULVDEYINGXIANG。YOUBIAOKEZHI,ZAISUANRONGGUOCHENGZHONGTIERONGCHULVSUIFANYINGSHIJIANDEYANZHANGERZENGJIA。ZAI1~4hSHIJIANFANWEINEI,TIERONGCHULVDEZENGJIAYUFANYINGSHIJIANJIHUCHENGXIANXINGDIZENGDEGUANXI。ZAI4~5hZHIJIAN,TIERONGCHULVZENGJIAHUANMAN。

广西快8遗漏数据 SHANGSHUSHIYANJIEGUOBIAOMING,ZAIYIDINGDETIAOJIANXIALIUTIEKUANGSHAOZHAZHONGTIERONGCHULVSUIFANYINGWENDUDESHENGGAO、FANYINGSHIJIANDEYANZHANGERZENGJIA。YINCIZAISUANRONGGUOCHENGZHONGYINGBAOCHIJIAOGAODEWENDU,CONGERSHITIERONGCHULVDADAO90%ZUOYOU,DANGFANYINGJINXINGDAO4hYIHOU,TIERONGCHULVDETIGAOBUZAIMINGXIAN,GUSHIJISHENGCHANGUOCHENGZHONGFANYINGSHIJIANYI4hJI。

广西快8遗漏数据 2.2SHUIJIEJUHEYUWENDINGXING

为了得到聚合硫酸铁产品需使经酸溶反应得到的Fe3+进行水解聚合。选择适宜的助聚添加剂关系到产品的混凝性能、储存稳定性和市场竞争力。尽管烧碱是较好的助剂,但单纯用它使Fe3+广西快8遗漏数据发生水解聚合,不仅会使产品成本提高40%,而且还使液体聚合硫酸铁的储存稳定性极差缺乏市场竞争力。这是以往用硫铁矿烧渣研制聚合铁盐混凝剂未能实现产业化的原因。因此,助聚稳定添加剂的选择是用硫铁矿烧渣生产聚合硫酸铁成败的关键因素之一。 另外,在用硫酸亚铁催化氧化法生产聚合硫酸铁时,液体产品稳定性问题也未能很好地解决。固体聚合硫酸铁产品的面世,虽然回避了稳定性这一问题,也给储运带来方便,但因增加了能耗、成本,使其在与其它混凝剂的竞争中处于劣势影响了其市场占有率。

BOTAOJUHELVHUALVCHANGJIA,DUIJIZHONGWUJIHEYOUJIZHUJUWENDINGTIANJIAJIRUSHAOJIAN、LINSUANYAN、JIUSHISUANYANDENGJINXINGLEXIANGXIDEYANJIU,KAOCHALETAMENDUICHANPINWENDINGXINGHEHUNNINGXINGNENGDEYINGXIANGJIEGUOBIAOMING,SHIYONGFUHEZHUJUWENDINGJICHANPINDEYANJIDUBBUJINKEYIZAI0~15FANWEINEI,GENJUSHUICHULIYAOQIURENYIDIAOZHENG,WENDINGCHUCUNQIDAYINIANYISHANG,ERQIEZAICHANPINCHENGBENFANGMIANJINZENGJIA5%ZUOYOU,ZONGHECHENGBENZAI250YUANDUNZUOYOU,DADATIGAOLECHANPINDESHICHANGJINGZHENGLI。CHANPINJINGDIAOZHENGYANJIDUHOUJINXINGCHOULVHUOYALV,DEDAOCIZHONGWEI1.58g/mLZUOYOU,NONGDUGAODA180g/LDEZONGSEZHANCHOUGAONONGDUHEGAOWENDINGXINGDEYETIJUHELIUSUANTIECHANPIN。

2.3JUHELIUSUANTIECHULIZAOZHIZHONGDUANFEISHUI

广西快8遗漏数据 2.3.1YAOJITOUJIALIANGDUICODcrDEYINGXIANG

废水混凝处理按1.3所述方法进行。固定体系的pH,改变聚合硫酸铁(药剂用量以Fe3+计)的投加量。实验结果见表3。

BIAO3 JUHELIUSUANTIETOUJIALIANGDUICODcrDEYINGXIANG

药剂 聚合硫酸铁 聚合氯化铝
投加量/(mg/L) 50 80 100 120 150 50 80 100 120 150
CODcr去除率/% 36.1 65.0 78.5 81.2 85.1 51.6 72.2 80.1 84.2 86.4

GENJUBIAO3ZHI,DANGJUHELIUSUANTIEDETOUJIALIANGZAI50~150mg/LDEFANWEINEIBIANHUASHI,CODcrDEQUCHULVSUIJUHELIUSUANTIENONGDUDEZENGJIAERJIADA,DANZAI100~150mg/LDEFANWEINEI,CODcrDEQUCHULVBIANHUABUTAIDA。YUJUHELVHUALVXIANGBI,DANGTAMENDETOUJIALIANGJIAOXIAOSHI(50~80mg/L),JUHELIUSUANTIEDECODcrQUCHULVDI10~20%,DANZAIGAOTOUJIALIANGSHI,ERZHEDECODcrQUCHULVJIBENXIANGTONG,ZAIZONGHEKAOLVSHUICHULIDEXIAOGUOYUCHENGBENDEQINGKUANGXIA,XUANYONGJUHELIUSUANTIENENGGOUJIANGDISHUICHULIFEIYONG。

2.3.2 pHDUIJUHELIUSUANTIECHULIFEISHUIDEYINGXIANG

ZAIGUDINGJUHELIUSUANTIEDETOUJIALIANGZAI100mg/LBUBIAN,GAIBIANTIXIDEpHSHI,KAOCHALECODcrQUCHULVYUpHJIANDEGUANXI,JIEGUOJIANBIAO4。

BIAO4 pHBIANHUADUIZHONGDUANFEISHUICHULIDEYINGXIANG

pH 3 4 5 6 7 8 10 11
CODcr去除率/% 40.4 75.9 79.2 79.1 78.2 77.5 76.2 76.4

YOUBIAO4KEZHI,ZAIpH3~4DEFANWEINEI,pHDEBIANHUADUIFEISHUIDECHULIXIAOGUOYINGXIANGSHENDA,ERZAIpH6~11DEFANWEINEI,pHDEZENGJIABUNENGXIANZHUDITIGAOJUHELIUSUANTIEDUIFEISHUIDEHUNNINGCHULIXIAOGUO。ZAIpH4~6FANWEINEI,JUHELIUSUANTIEYOUJIAOGAODECODcrQUCHULV。GAIJIEGUOYUJUHETIEYANJIAOJIAHUNNINGXIAOGUODEpH5~9FANWEISHAOYOUBUTONG,ZHEIKENENGYUFEISHUIZHONGHANYOUSHAOLIANGDEMUZHISUYOUGUAN,ZAIJIAODIpHFANWEISHIMUZHISUYIXICHUERBEIJUHETIEYANHUNNINGCHUQU。

广西快8遗漏数据 LINGWAI,DANGYONGJUHELVHUALVCHULISHI,ZAIpH6~8DEFANWEINEI,CODcrDEQUCHULVZAI80%ZUOYOU。DANZAIpH<4.5HUO>9DETIAOJIANXIA,CODcrDEQUCHULVHENDIBUNENGCHANSHENGLIANGHAODEHUNNINGXIAOGUO。KEGUANJUHELIUSUANTIEBIJUHELVHUALVYOUGENGKUANDEpHSHIYINGFANWEI。

3JIELUN

YONGLIUTIEKUANGSHAOZHAWEIYUANLIAOSHENGCHANCHULEGAOWENDINGXINGDEYETIJUHELIUSUANTIE,GAIFANGFAGONGYIJIANDAN,SUODEYETICHANPINSHIYONGFANGBIAN、CHENGBENDI,YOUHENQIANGDESHICHANGJINGZHENGLI。ZHEISHIYILIUTIEKUANGSHAOZHASHENGCHANJUHELIUSUANTIEDECHANYEHUACHENGWEIXIANSHI。CAIYONGJUHELIUSUANTIEZUOWEICHULIZAOZHIZHONGDUANFEISHUIDEHUNNINGJISHI,QIDUIpHDESHIYINGFANWEIGUANG(pH6~11),ZAISHIYIDECAOZUOTIAOJIANXIA,CODcrDEQUCHULVJIN80%。

聚合氯化铝价格咨询电话

DIZHI:GONGYISHIDONGGONGYEKAIFAQU

广西快8遗漏数据LIANXIREN:LIUXIANSHENG    SHOUJI:18595812566

广西快8遗漏数据QQ:2390826449    YOUXIANG:2390826449@qq.com

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