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电镀废气治理技术及存在问题与对策

更新时间:2017-12-24 来源:电刷镀 标签:

电镀企业产生的污染物种类很多,有含有重金属和各种有害化学物质的污水,也有很多有毒废气的排放。这些废气如不采取措施治理,会对人类和环污染。本人根据多年的电镀工艺设计的经验,提出一些电镀看一集电视剧赚60元废气治理的有关建议和措施,为电镀行业废气治理提供技术参考,并对保护生态环境、控制空气污染具有重要的意义。

1电镀废气概念

1.1DIANDUFEIQIZHONGLEI

看一集电视剧赚60元GENJU《DIANDUWURANWUPAIFANGBIAOZHUN)gb21900-2008,DIANDUFEIQIDEZHONGLEIZHUYAOYOULVHUAQING、GESUANWU、LIUSUANWU、DANYANGHUAWU、QINGHUAQINGYIJIFUHUAWU。CIWAI,HAIYOUYIXIEHANFENCHENQITI、YOUJIFEIQI、JIANWANGQITI。

1.2DIANDUFEIQIDEWEIHAI

GENJUDUIDIANDUFEIQIDEJIANCE,FENXIFEIQIZHONGLEI,BUNANFAXIAN,ZHEIXIEFEIQIDUIRENTIWEIHAIJIDA,YAOHENHAODEZHILIZHEIXIEFEIQIJIUYAOCONGDIANDUFEIQIDUIHUANJINGDEWEIHAIZHESHOUFENXI。

1DUIRENTIDEWEIHAI,ZHUYAOBIAOXIANZAIDUIRENTIHUXIDAO、YANJING、PIFUDEWEIHAI,YOUXIEDIANDUFEIQIWUSEWUWEI,DUIHUXIDAOCHANSHENGZHANGQIMANXINGDESHANGHAI,JINGGUOZHUJIANJILEI,HANLIANGCHAOGUOXIANDU,HUIDAOZHIZHIQIGUANYAN、ZHIQIGUANXIAOCHUAN、FEIAI、GANAIDENGJIBING。ERDIANDUGONGYIPAIFANGDELVHUAQING、SUANJIANWUDENGHUIDUIRENTIYANJINGHEPIFUCHANSHENGCIJIZUOYONG,HUICHUXIANHONGYANBING、PIYANDENGZHENGZHUANG。

看一集电视剧赚60元2DUIZHIWUHEJIANZHUWUDEWEIHAI,DIANDUGONGYISUOPAIFANGDEERYANGHUALIU、DANYANGHUAWU,ZAIKONGQIZHONGDUIZHIWUDESHENGZHANGYOUWEIHAIZUOYONG,SHENZHISHASIZHIWU。RUGUOZAIXINGCHENGSUANYUHAIHUIDUIJIANZHUWUCHANSHENGFUSHI、XIUYOUDENG。

看一集电视剧赚60元CHULEYISHANGDEWEIHAIZHIWAI,ZAIDIANDUGONGYIGUOCHENGZHONG,CHANSHENGDEDIANDUFEIMIANHUIDUIDIANDUDECHANPINCHANSHENGWEIHAI。ZHUYAOSHIYINWEIZAIDIANHENCHEJIANZHONG,SUANJIANWU、FENCHENDENGTAIDUO,HUIDUICHEJIANZHONGDEDIANHENSHEBEIWANGNENGJIDIANDUCAILIAODECHUNDUDENGCHANSHENGBUTONGCHENGDUDEYINGXIANG。

2电镀废气的治理方法

看一集电视剧赚60元GENJUZAI《DIANDUWURANWUPAIFANGBIAOZHUN》(gb21900-2008)GUIDING,DUIDIANDUGOUGONGYIJISHESHIBIXUANZHUANGJUBUQITISHOUJIXITONG,BINGJINXINGJIZHONGJINGHUAZHILI,CAINENGTONGYIYOUPAIQITONGPAIFANGDAODAQIZHONG。YOUCIKEYIJIANGDIANDUFEIQITONGGUOSANZHONGFANGSHIJINXINGZHILI,FENBIEWEIYUANTOUJIANSHAODIANDUFEIQI、ANZHUANGPAIFENGXITONG、ANZHUANGDIANDUFEIQIJINGHUASHEBEI。

2.1YUANTOUJIANSHAODIANDUFEIQI

TONGGUOGAIBIANDIANDUGONGYESHENGCHANDEGONGYILIUCHENG,HUOCAIYONGWUDUCAILIAO,SHIDIANDUSHENGCHANGUOCHENGZHONG,DADAOYOUDUYOUHAIFEIQILINGPAIFANGDEMUDE。

1在电镀过程中,对镀件清洗时,叫投采用碱洗除油、酸洗除绣,因此,在清洗溶液中,分别添加酸雾、碱雾抑制剂,可以有效减少酸雾、碱雾的排放。2铬雾的抑制,可以采用低温设备或低温工艺流程,同时在镀络溶液中加入少售的全氟烷基醚磺酸盐,并注意全氟院醚磺酸盐配置方法和配比,可以有效抑制铬雾的产生。此外,还可以在镀铭槽表面,覆盖一层聚乙烯、聚氯乙烯材质的空心小球,也能有效抑制铬雾释放。3氮氧化物的抑制,抑制电镀工艺中氮氧化物的排放,可以采用不加硝酸的电镀工艺流程,如铝件电镀时,采用硫酸和磷酸,再加入少量的添加剂,即可对铝件进行抛光。另一方面,利用化学氧化法和化学还原法,将亚硝酸氧化成硝酸或者将氮氧化物气体还原成无毒的惰性气体。

看一集电视剧赚60元2.2ANZHUANGPAIFENGXITONGJIJINGHUAXITONG

KAOLVDIANDUFEIQIDEZHILI,KEYITONGGUOANZHUANGPAIFENGXITONG,JIANGBEIWURANDEFEIQISHUSONGDAOQITIJINGHUAXITONG,YIDADAOJIANGYOUDUYOUHAIQITIQUCHUDEMUDE。YOUCIKEJIAN,ANZHUANGPAIFENGXITONGHEJINGHUAXITONG,SHIYIGETONGYIDEZHENGTI。

2.2.1ANZHUANGPAIFENGXITONG

GENJUDIANDUFEIQIPAIFANGTEDIAN,GONGCHANGCHEJIANSHENGCHANTIAOJIANXIANZHI,YOUHAIFEIQIPAIFANGFANGSHI,CAIYONGBUTONGDEPAIFENGXITONG。RUZAICHEJIANZHONG,YIBANSHIYINWEIAOYUANBUGUDING,PAIFANGDIANDUODENGYINSU,CAIYONGJUBUPAIFENGFANGSHI。JIANGZHEIXIEJUBUPAIFENGFANGSHIDEQITIJINXINGJIANCE,RUGUODADAOPAIFANGBIAOZHUN,KEYIZHIJIEPAIFANGZHIDAQIZHONG,RUGUOGAOYUPAIFANGBIAOZHUN,ZEXUYAOJIANGFEIQITONGRUJINGHUAXITONG,ZAIYOUHAIFEIQIPAIFANGDEDIAN,ZHIJIEJIANGFEIQISHOUJI,JINGGUOTONGFENGXITONGPAIFANGDAOSHIWAI。WEILEBAOZHENGCHEJIANKONGQIYALIPINGHENG,HAIXUYAOJINXINGJIXIETONGFENG,BAOCHISHINEIKONGQIZHILIANGFUHEBIAOZHUN。

看一集电视剧赚60元2.2.2FEIQIJINGHUAXITONG

酸性废气的治理中,其中酸性废气净化的主要方法是将酸性废气用三级碱液喷淋,再有烟囱排放。如处理典型酸往废气所配置的碱液如表1所示。用该方法吸收酸性废气时,在真空抽气栗上安装密闭罩,将车间内气体排放,进入装有填料的喷淋塔。该工艺去除酸性废气的效率可达90%以上。

3电镀废气治理技术存在的问题及解决对策

看一集电视剧赚60元3.1DIANDUFEIQIZHILIJISHUCUNZAIWENTI

DIANDUXINGYESHIZHONGWURANSHENGCHANGONGYE,BUJINSHIFEIQIWURAN,HAIYOUQITADERUSHUIWURAN、WUNIWURAN、ZAOSHENGWURANDENG,ZHEIXIEWURANWUDEZHILIBIXUYAOZONGHEKAOLV,TONGCHOUCHULI,CAINENGDADAOQUCHUDEXIAOGUO。YEZHENGSHIYOUYUDIANDUYEGAOWURAN、GAOHAONENGDENGTEDIAN,ZAIFEIQIZHILIZHONGHAICUNZAIYIXIEMANGDIAN,RUFEIQISHOUJISHI,DUIYUCHEJIANNEIFEIQISHOUJIBUWANQUAN,MUQIANHENDUOFEIQISHOUJIZHUANGZHIZHIANZHUANGZAIFEIQISHIFANGCHU,JIWEIDIANANZHUANG;CIWAI,YOUYUFEIQIZHONGLEIDUO,CHULIFANGSHIGEBUXIANGTONG,YINCI,ZAICHULISHIWUFAZUODAOJIANGSUOYOUFEIQIQUANBUQUCHU。ZHEIXIEDOUSHIDANGQIANDIANDUXINGYEGONGZUOZHONGJIXUJIEJUEDEWENTI。

看一集电视剧赚60元3.2DIANDUFEIQIZHILIJISHUJIEJUEDUICE

GENJUDIANDUFEIQIZHILIJISHUCUNZAIDEWENTI,TICHUXIANGYINGDEDUICE,DIYI,KEYIJIANGCHEJIANNEIDEDIANSHOUJIGAIWEIDIANSHOUJIYUMIANSHOUJIXIANGJIEHEDEFANGSHI,JIDUIZHONGDIANWURANWUPAIFANGCHUSHEZHICUNWURANFEIQISHOUJIZHUANGZHI,DUIZHENGGECHEJIANHAISHEZHIMIANSHOUJI,BAOZHENGCHEJIANKONGQIZHONGDEWURANWUNONGDUMEIYOUCHAOGUOXIANZHI;DIER,KEYIZONGHESUANJIANXINGFEIQI、GEWU、QINGHUAWU、DANYANGHUAWUDENGPENLINYEDETEDIAN,ZHIBEICHUYIZHONGNENGTONGSHIXISHOUSUOYOUFEIQIDEXISHOUYE,HUOYANJIUYITAOZONGHEXISHOUDEGONGYILIUCHENG,BAOZHENGDIANDUSHENGCHANZHONGSUOYOUFEIQIDOUBEIXISHOUJINGHUA。

4结语

DIANDUGONGYE,“SANFEI”PAIFANGSHIFENYANZHONG,YAOJIANSHAODUI“SANFEI”DEPAIFANG,YIFANGMIANYAOCONGYUANTOU,NIANGGONGYILIUCHENG,NIANGDIANDUSHENGCHANJIMICONGGONGYESHENGCHANDEDIYIBUJIANSHAOWURANWUDEPAIFANG;TONGSHI,HAIYAODUISUOPAIFANGCHULAIDEWURANWUJINXINGJINGHUA,TONGGUOYANJIUHEFENXIWURANWUDEXINGZHI,QUEDINGFEIQIZHILIJISHU。

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