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污水处理过程中各指标的测定方法(三)

2017年07月21日 中国科学报 韩津科技 字体:

④JIANGSHUIYANGZHUANGRULIANGGERONGJIEYANGPINGNEI,CEDINGDANGTIANRONGJIEYANGHEPEIYANG5TIANHOUDERONGJIEYANG。

88彩票注册⑤XISHISHUITONGYANGPEIYANGZUOKONGBAISHIYAN,CEDING5TIANQIANHOUDERONGJIEYANG。

污水处理过程中各指标的测定方法(三)

4、注意事项

(1)SHUIYANGpHZHIYINGZAI6.5—7.5FANWEINEI,RUOCHAOCHUKEYONGYANSUANHUOQINGYANGHUANADIAOJIEpHJINYU7。

88彩票注册(2)SHUIYANGZAICAIJIHEBAOCUNJICAOZUOGUOCHENGZHONGBUYAOCHUXIANQIPAO

(3)SHUIYANGXISHIBEISHUCHAOGUO100SHI,YAOYUXIANZAIRONGLIANGPINGZHONGYONGZHENGLIUSHUIXISHI,ZAIQUSHILIANGJINXINGXISHIPEIYANG。

88彩票注册(4)JIANCHAXISHISHUIHEJIEZHONGYEDEZHILIANGHEHUAYANRENYUANDESHUIPING,KEJIANG20mlPUTAOTANG—GUANSUANBIAOYEYONGXISHISHUIXIZHI1000ml,ANBODDEBUZHOUCAOZUO,CEDEDEZHIYINGZAI180—230mg/LZHIJIAN,FOUZE,YINGZHAOCHUYUANYINSUOZAI。

(5)ZAIPEIYANGGUOCHENGZHONGZHUYIJISHITIANJIAFENGKOUSHUI。

04

溶解氧的测定

88彩票注册RONGJIEZAISHUIZHONGDEFENZITAIYANGCHENGWEIRONGJIEYANG。RONGJIEYANGDEBAOHEHANLIANGHEKONGQIZHONGYANGDEFENYA、DAQIYALI、SHUIWENYOUMIQIEGUANXI。QINGJIEDIMIANSHUIRONGJIEYANGYIBANJIEJINBAOHE,FEISHUIZHONGDERONGJIEYANGHANLIANGYIBANJIAODI。

1、方法选择

88彩票注册CEDINGSHUIZHONGRONGJIEYANGCHANGYONGDIANLIANGFAJIQIXIUZHENGFA,HAIKEYONGRONGJIEYANGYICEDING。YANGHUAXINGWUZHIKESHIDIANHUAWUYOULICHUDIAN,CHANSHENGZHENGGANRAO;HAIYUANXINGWUZHIKEBADIANHAIYUANCHENGDIANHUAWU,CHANSHENGFUGANRAO。DABUFENSHOUWURANDEDIMIANSHUIHEGONGYEFEISHUICAIYONGXIUZHENGDEDIANLIANGFAHEDIANJIFA。

2、水样的采集与保存

88彩票注册SHUIYANGYINGCAIJIZAIRONGJIEYANGPINGZHONG,GUOCHENGZHONGBUYAOYOUQIPAOCHANSHENG,YANPINGBIZHIJIEQINGZHUSHUIYANGZHIYILIUCHUPINGRONGJI1/3—1/2ZUOYOU,CAIJIHOU,ZAIQUYANGXIANCHANGLIJIGUDINGBINGCUNYUANCHU。

碘量法:

1、原理

SHUIYANGZHONGJIARULIUSUANMENGHEJIANXINGDIANHUAJIA,SHUIZHONGDERONGJIEYANGJIANGDIJIAMENGYANGHUACHENGGAOJIAMENG,SHENGCHENGSIJIAMENGDEQINGYANGHUAWUCHENDIAN。JIASUANHOU,QINGYANGHUAWUCHENDIANRONGJIEBINGYUDIANLIZIFANYINGERSHIFANGCHUDIAN。YIDIANFENZUOZHISHIJI,YONGLIUDAILIUSUANNADIDINGDIAN,KEJISUANRONGJIEYANGDEHANLIANG。

2、仪器:

88彩票注册250—300mlRONGJIEYANGPING

SHIJI:

(1)硫酸锰溶液:

CHENGQU240gLIUSUANMENG(MnSO4˙4H2OHUO182gMnSO4˙H2O)RONGYUSHUI,XIZHI500ml。

(2)碱性碘化钾溶液

CHENGQU250gQINGYANGHUANARONGYU200mlSHUIZHONG;CHENGQU75gDIANHUAJIARONGYU100mlSHUIZHONG,DAIQINGYANGHUANALENGQUEHOU,JIANGLIANGRONGYEHUNHE,XIZHI500ml。

RUYOUCHENDIAN,ZEFANGZHIGUOYE,QINGCHUSHANGQINGYE,ZHUYUZONGSEPINGZHONG,YONGXIANGJIAOSAISAIJIN,BIGUANGBAOCUN。

(3)1+5的硫酸溶液:1份硫酸加上5份水。

(4)1%的淀粉溶液:

CHENGQU1gKERONGXINGDIANFEN,YONGSHAOLIANGSHUIDIAOCHENGHUZHUANG,YONGGANGZHUFEIDESHUICHONGXIZHI100ml。LENGQUEHOU,JIARU0.4gLVHUAXINFANGFU。

(5)0.02500mol/L(1/6K2Cr2O7)

88彩票注册CHENGQUYU105--110℃HONGGAN2hBINGLENGQUEDEZHONGGESUANJIA1.2258g,RONGYUSHUI,YIRU1000mlDERONGLIANGPINGZHONG,XIZHIBIAOXIAN,HUNYUN。

(6)硫代硫酸钠溶液

CHENGQU6.2gDELIUDAILIUSUANNA(Na2S2O3˙5H2O)RONGYUZHUFEIFANGLENGDESHUIZHONG,YONG

SHUIXIZHI1000,ZHUYUZONGSEPINGZHONG。YONGQIANYONG0.02500mol/LDEZHONGGESUANJIABIAODING,FANGFARUXIA:

YU250mlDIANLIANGPINGZHONG,JIARU100mlSHUIHE1gDIANHUAJIA,JIARU10.00ml 0.02500mol/LZHONGGESUANJIABIAOYE,5ml 1+5DELIUSUANRONGYEMISAI,YAOYUN。ANCHUJINGZHI5FENZHONGHOU,YONGLIUDAILIUSUANNADIDINGZHIRONGYECHENGDANHUANGSE,JIARU1mlDIANFENRONGYE,JIXUDIDINGZHILANSEGANGHAOTUNQU。JILUYONGLIANG


污水处理过程中各指标的测定方法(三)

(7)浓硫酸

3、实验步骤

(1) 溶解氧的固定(取样现场固定)

88彩票注册①YONGXIGUANCHARUYEMIANXIA,JIARU1mlLIUSUANMENG、2mlJIANXINGDIANHUAJIA;

②GAIHAOPINGGAI,DIANDAOHUNHESHUCI,JINGZHI。

③DAICHENDIANWUJIANGZHIPINGNEIYIBAN,ZAIDIANDAOHUNHEYICI,DAICHENDIANWUJIANGDAOPINGDI。

(2) 析出碘

88彩票注册QINGQINGDAKAIPINGSAI,LIJIJIANGXIGUANCHARUYEMIANXIAJIARU2.0mlNONGLIUSUAN,,GAIHAOPINGSAI,DIANDAOHUNHE,ZHICHENDIANWUQUANBURONGJIE,ANCHUFANGZHI5FENZHONG。

(3) 滴定

XIQU100.0mlSHANGSHURONGYEYU250mlZHUIXINGPINGZHONG,YONGLIUDAILIUSUANNADIDINGZHIDANHUANGSE,JIARU1mlDIANFENRONGYE,JIXUDIDINGZHILANSEGANGHAOTUNQUJIWEIZHONGDIAN,JILUYONGLIANG。

污水处理过程中各指标的测定方法(三)

叠氮化钠修正(碘量)法:

1、概述

SHUIZHONGHANYOUYAXIAOSUANYANSHIGANRAODIANLIANGFACERONGJIEYANG,KEJIARUDIEDANHUANA,SHISHUIZHONGYAXIAOSUANYANFENJIE,YIXIAOCHUGANRAO。ZAIBUHANQITAYANGHUAHAIYUANWUZHISHI,RUOSHUIYANGZHONGHANFe3+ DA100—200mg/LSHI,KEJIARU1ml40%FUHUAJIARONGYE,YIXIAOCHUGANRAO。

2、试剂:

(1)JIANXINGDIANHUAJIA—DIEDANHUANARONGYE: CHENGQU250gQINGYANGHUANARONGYU200mlSHUIZHONG;CHENGQU75gDIANHUAJIARONGYU100mlSHUIZHONG,RONGJIE5gDIEDANHUANAYU20mlSHUIZHONG,DAIQINGYANGHUANALENGQUEHOU,JIANGSANRONGYEHUNHE,XIZHI500ml。ZHUYUZONGSEPINGZHONG,YONGXIANGJIAOSAISAIJIN,BIGUANGBAOCUN。

88彩票注册(2)40%(m/v)FUHUAJIA:CHENGQU40gFUHUAJIA(KF˙2H2O)RONGYUSHUI,XIZHI100ml,ZHUYUJUYIXIPINGZHONG。

(3)SHIYANBUZHOUTONGDIANLIANGFA。JINJIANGJIANXINGDIANHUAJIAHUANCHENGJIANXINGDIANHUAJIA—DIEDANHUANARONGYE。RUOHANFe3+GANRAO,ZECHARUYEMIANXIAXIANJIARU1ml40%FUHUAJIARONGYE。

注意事项:

(1)DIEDANHUANASHIYIZHONGJUDU、YIBAOSHIJI,BUNENGJIANGJIANXINGDIANHUAJIA—DIEDANHUANARONGYEZHIJIESUANHUA,FOUZECHANSHENGYOUDUYANWU。

88彩票注册(2)SHUIYANGCHENGQIANGSUANHUOQIANGJIANXING,KEYONGQINGYANGHUANAHUOLIUSUANDIAOZHIZHONGXING。

(3)ZAICAOZUOGUOCHENGZHONGQIEWUCHANSHENGQIPAO。

88彩票注册(4)LIUDAILIUSUANNANONGDURONGYIBIANHUA,MEICISHIYONGDOUYAOBIAODING。


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