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污水处理过程中各指标的测定方法(一)

2017年07月21日 中国科学报 韩津科技 字体:

88彩票注册JINRISHUISHIJIELUNTANDEYIWEILAOQIANBEISHANGCHUANLEYIFENZHONGLIANGJIDEZILIAO,GAIZILIAOXIANGXIJIESHAOLEZAIGUOCHENGZHONGSUOYUDAODE26ZHONGZHIBIAODECEDINGFANGFA,YIJISHILIDECHANGSHIHESHIYANSHIDEZHILIANGKONGZHI,BINGQIEHAIFUDAILEBUFENMINGCIJIESHI。QIHANJINLIANGZHESHIRANGXIAOBIANZHENJING,ZAICIYUDAJIAFENXIANG,BINGGANXIEQIANBEIDEWUSIFUCHU。

01

pH值的测定

pHWEISHUIZHONGQINGLIZIHUODUDEFUDUISHU

污水处理过程中各指标的测定方法(一)

88彩票注册pHZHIKEJIANJIEDEBIAOSHISHUIDESUANJIANQIANGDU,SHISHUIHUAXUEZHONGCHANGYONGHEZUIZHONGYAODEJIANYANXIANGMUZHIYI。

玻璃电极法:

YIQI:SUANDUJI(DAIFUHEDIANJI)、250mlSULIAOSHAOBEI

SHIJI:pHCHENGTAODAIZHUANGHUANCHONGJI(LINBENERJIASUANQINGJIA、HUNHELINSUANYAN、PENGSHA)

污水处理过程中各指标的测定方法(一)

实验步骤:

(1)缓冲溶液的配制:

88彩票注册JIANKAISULIAODAI,JIANGFENMODAORU250mlRONGLIANGPINGZHONG,YISHAOLIANGWUERYANGHUATANSHUICHONGXISULIAODAINEIBI,XISHIDAOKEDUYAOYUNBEIYONG。

(2)仪器(pHS-2C酸度计)的校准:

a、YIQICHASHANGDIANJI,JIANGXUANZEKAIGUANZHIYUpHDANG,XIELVDIAOJIEZAI100%CHU;

88彩票注册b、XUANZELIANGZHONGHUANCHONGRONGYE(BEICERONGYEpHZAILIANGZHEZHIJIAN);

c、BADIANJIFANGRUDIYIZHONGHUANCHONGYEZHONG,DIAOJIEWENDUDIAOJIEQI,SHISUOZHISHIDEWENDUYURONGYEJUNYUN。

88彩票注册d、DAIDUSHUWENDINGHOU,DIAOJIEDINGWEIDIAOJIEQIZHISHANGBIAOSUOSHIGAIWENDUXIADEpHZHI;

e、RANHOUFANGRUDIERZHONGHUANCHONGYEZHONG,HUNYUN,DIAOJIEXIELVDIAOJIEQIZHISHANGBIAOSUOSHIGAIWENDUXIADEPHZHI。

(3)样品测定:

RUGUOYANGPINWENDUYUXIAOZHUNDEWENDUXIANGTONG,ZEZHIJIEJIANGXIAOZHUNHOUDEDIANJIFANGRUYANGPINZHONG,YAOYUN,DAIDUSHUWENDING,JIWEIYANGPINDEpHZHI;RUGUOWENDUBUTONG,ZEYONGWENDUJILIANGCHUYANGPINWENDU,DIAOJIEWENDUDIAOJIEQI,ZHISHIGAIWENDU,“DINGWEI”BAOCHIBUBIAN,JIANGDIANJICHARU,YAOYUN,WENDINGHOUDUSHU。

注意事项:

(1)DIANJIDUANSHIJIANBUYONGSHI,JINPAOZAIZHENGLIUSHUIZHONG;RUZHANGSHIJIANBUYONG,ZEZAIDIANJIMAONEIJIASHAOXUDIANJIYE,GAISHANGDIANJIMAO。

(2)JISHIBUCHONGDIANJIYE,FUHEDIANJIDEWAICANBIBUCHONGYEWEI3MLVHUAJIARONGYE

(3)DIANJIDEBOLIQIUPAOBUYUYINGWUJIECHU,YIMIANSUNHUAI。

(4)MEICICEWANSHUIYANG,DOUYAOYONGZHENGLIUSHUICHONGXIDIANJITOUBU,BINGYONGLVZHIXIGAN。

02

化学需氧量的测定

HUAXUEXUYANGLIANGSHIZHIZAIYIDINGTIAOJIANXIA,YONGQIANGYANGHUAJICHULISHUIYANGSHISUOXIAOHAOYANGHUAJIDELIANG,YONGYANGDEHAOKE/SHENGBIAOSHI。

HUAXUEXUYANGLIANGFANYINGLESHUIZHONGSHOUHAIYUANXINGWUZHIWURANDECHENGDU。ZHEIXIEHAIYUANXINGWUZHIBAOKUOYOUJIWU、YAXIAOSUANYAN、YATIEYAN、LIUHUAWUDENG。SHISHUIZHONGYOUJIWUXIANGDUIHANLIANGDEZHIBIAOZHIYI。

重铬酸钾法:

1、原理

ZAIQIANGSUANXINGRONGYEZHONG,YIDINGLIANGDEZHONGGESUANJIAYANGHUA(YIAg+ZUOCIFANYINGDECUIHUAJI)SHUIYANGZHONGDEHAIYUANXINGWUZHI(YOUJIWU),GUOLIANGDEZHONGGESUANJIAYISHIYATIELINGZUOZHISHIJI,YONGLIUSUANYATIEANRONGYEHUIDI。GENJUYONGLIANGJISUANCHUSHUIYANGZHONGHAIYUANXINGWUZHIXIAOHAOYANGDELIANG。

2、干扰及消除

LVLIZINENGBEIZHONGGESUANYANYANGHUA,BINGQIENENGYULIUSUANYINZUOYONGCHANSHENGCHENDIAN,YINGXIANGCEDINGJIEGUO,GUZAIHUILIUQIANXIANGSHUIYANGZHONGJIARULIUSUANGONG,SHICHENGWEILUOHEWUYIXIAOCHUGANRAO.

3、仪器:

88彩票注册(1)HUILIUZHUANGZHI:DAI250mlZHUIXINGPINGDEQUANBOLIHUILIUZHUANGZHI,BAOKUO:MOKOUZHUIXINGPING、LENGNINGGUAN、DIANLUHUODIANREBAN、XIANGJIAOGUAN。

(2)50mlSUANSHIDIDINGGUAN

试剂:

88彩票注册(1)ZHONGGESUANJIARONGYE(1/6K2Cr2O7=0.2500mol/L):CHENGQUYUXIANZAI120℃HONGGAN2XIAOSHIDEJIZHUNHUOYOUJICHUNZHONGGESUANJIA12.258gRONGYUSHUIZHONG,YIRU1000mlDERONGLIANGPINGZHONG,XIZHIBIAOXIAN。

(2)SHIYATIELINGZHISHIYE:CHENGQU1.485gLINFEILUOLIN(C12H8N2.H2O),0.695gLIUSUANYATIERONGYUSHUIZHONG,XIZHI100ml,ZHUYUZONGSEPINGZHONG。

88彩票注册(3)LIUSUANYATIEANBIAOZHUNRONGYE[(NH4)2Fe(SO4)2.6H2O≈0.1mol/L]:CHENGQU39.5gLIUSUANYATIEANRONGYUSHUIZHONG,BIANJIAOBANBIANHUANMANJIARU20mlNONGLIUSUAN,LENGQUEHOUYIRU1000mlDERONGLIANGPINGZHONG,XIZHIBIAOXIAN,YAOYUN。YONGQIAN,YONGZHONGGESUANJIABIAODING。

标定方法:

88彩票注册ZHUNQUEXIQU10.00mlZHONGGESUANJIABIAOYEYU250mlZHUIXINGPINGZHONG,JIASHUIXIZHI110mlZUOYOU,HUANMANJIARU30mlNONGLIUSUAN,HUNYUN。LENGQUEHOU,JIARU3DISHIYATIELINGZHISHIYE,YONGLIUSUANYATIEANRONGYEDIDING,RONGYEYANSEYOUHUANGSEJINGLANLVZHIHONGHESEJIWEIZHONGDIAN。

污水处理过程中各指标的测定方法(一)

C—LIUSUANYATIEANBIAOZHUNRONGYEDENONGDU(mol/L)

88彩票注册V—LIUSUANYATIEANBIAOZHUNRONGYEDEYONGLIANG(ml)

88彩票注册(4)LIUSUAN—LIUSUANYIN:YU500mlNONGLIUSUANZHONGJIARU5gLIUSUANYIN,FANGZHI1~2TIANSHIRONGJIE。

(5)LIUSUANGONG:JIEJINGHUOFENMO。

4、实验步骤

(1)QU20mlHUNYUNSHUIYANGZHIHUILIUZHUIXINGPINGZHONG;

(2)JIARUYUE0.4gLIUSUANGONG;

(3 )ZHUNQUEJIARU10.00mlZHONGGESUANJIABIAOYEHEXIAOBOLIZHU;

(4)ZAIHUANMANJIARU30mlLIUSUAN—LIUSUANYINRONGYE;

(5)YAOYUN,LIANJIELENGNINGGUAN,JIAREFEITENGHUILIU2XIAOSHI;

(6)LENGQUEHOU,CONGLENGNINGGUANJIARU90mlZHENGLIUSHUI;

(7)QUXIAZHUIXINGPING,JIARU3DISHIYATIELINGZHISHIYE,YONGLIUSUANYATIEANBIAOYEDIDINGYOUHUANGSEJINGLANLVSEZHIHONGHESEWEIZHONGDIAN。JILULIUSUANYATIEANBIAOYEDEYONGLIANG。

污水处理过程中各指标的测定方法(一)

5、注意事项

88彩票注册(1)JIARUH2SO4-AgSO4QIAN,YIDINGYAOJIABOLIZHU,YIMIANYINQIBAOFEI。

88彩票注册(2)CODDEJIEGUOYAOBAOLIUSANWEIYOUXIAOSHUZI。


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