市政污水處理的工藝及方法

                       

一、背景

CHENGSHISHENGHUOWUSHUISHICHENGSHIFAZHANZHONGDECHANWU,SUIZHUCHENGSHIHUAHEGONGYEHUAJINCHENGDEJIAKUAI,QICHANSHENGLIANGBUDUANZENGDA,WURANRIYIYANZHONG,YIYANZHONGZHIYUELECHENGSHISHEHUIJINGJIDEKECHIXUFAZHAN。ZAIQUANQIUJINGJIKUAISUFAZHANDEJINTIAN,HUANBAOWENTI,TEBIESHICHENGSHIWUSHUICHULIYICHENGWEIGEGUOYANJIUDEREDIAN。CHENGSHIWUSHUIDEZHILIDUIGAISHANCHENGSHISHUIHUANJING,BAOZHANGCHENGSHIJINGJIFAZHANQIZHUGUANJIANDEZUOYONG。XIFANGFADAGUOJIA20SHIJI50NIANDAIJINGJIDEFAZHAN,CENGDAOZHILE60NIANDAIYANZHONGDEHUANJINGWURAN。ZHI20SHIJI70NIANDAIMO,MEIGUOXINGJIANDECHENGSHIWUSHUICHULICHANGDA18000YUZUO,TOURUZIJINSHUWANYIMEIYUAN;YINGGUO、FAGUO、DEGUOGEHAOFEILEJUEZIJINXINGJIANLE7000~8000ZUOCHENGSHIWUSHUICHULICHANG。WOGUODEWUSHUICHULISHIYU20SHIJI70NIANDAI。JUTONGJI,JIEZHI2015NIANDI,QUANGUOYIJIANCHENGWUSHUICHULICHANG1943ZUO,WUSHUICHANGRICHULINENGLI14028WANLIFANGMI,QUANNIANLEIJICHULIWUSHUILIANGDA410.3YILIFANGMI,2015NIANQUANGUOCHENGSHIWUSHUICHULILVDADAO91.97%。

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二、城市污水處理工藝流程總述

DIANXINGDECHENGSHIWUSHUICHULIGONGYILIUCHENGZHUYAOBAOKUOJIXIECHULI、SHENGHUACHULI、WUNICHULIDENGGONGDUAN。YOUJIXIECHULIYIJISHENGHUACHULIGOUCHENGDEXITONGSHUYUERJICHULIXITONG,QIZHONGBOD5HESSQUCHULVKEDA90%-98%。CHULIXIAOGUOJIEYUYIJIHEERJICHULIZHONGJIANDEYIBANCHENGWEIQIANGHUAYIJICHULI、YIJIBANCHULIHUOBUWANQUANERJICHULI,ZHUYAOYOUGAOFUHESHENGWUCHULIFAHEHUAXUECHULIFALIANGDALEI,BOD5QUCHULVDA45%-75%。JUYOUSHENGWUCHULINTUODANGONGNENGDEERJICHULIXITONGTONGCHANGCHENGWEISHENDUERJICHULI。WEILECHUTEDINGDEWUZHI,ZAIERJICHULIZHIHOUSHEZHIDECHULIXITONGSHUYUSANJICHULI,LIRUHUAXUECHULIN,HUOXINGTANXIFUDENG。

1、WURANWUDEFENLEI

CONGWUSHUICHULIDEJIAODU,WURANWUKEFENWEIXUANFUGUTIWURANWU、YOUJIWURANWU、YOUDUWUZHI、WURANSHENGWUHEWURANYINGYANGWUZHI。CHENGSHIWUSHUIZHONGHANYOUDEDALIANGYOUJIWUPAIRUSHUITI,HUISHISHUITIZHONGRONGJIEYANGDEHANLIANGJIANGDI,SHENZHIDADAOQUEYANGZHUANGTAI,YANZHONGWURANSHUITI,SHISHUIZHONGYULEIWUFASHENGCUN。WUSHUIZHONGYOUJIWUNONGDUYIBANYONGSHENGWUHUAXUEXUYANGLIANG(BOD5)、HUAXUEXUYANGLIANG(COD)、ZONGXUYANGLIANG(TOD)HEZONGYOUJITAN(TOC)LAIBIAOSHI。YINGYANGWUZHIZHUYAOZHIDAN、LIN,QIKESHIZAOLEIHEFUYOUSHENGWUFANZHI,XINGCHENG"SHUIHUA"HE"CHICHAO"。

2、WUSHUICHULIFANGFA

WUSHUICHULIFANGFAKEGENJUSHUIZHILEIXINGFENWEIWULICHULIFA、SHENGWUCHULIFA、WUSHUICHULICHANSHENGDEWUNICHUZHIJIHUAXUECHULIFA,HUANKEGENJUCHULICHENGDUFENWEIYIJICHULI、ERJICHULIJISANJICHULIDENGGONGYILIUCHENG。

CHENGSHIWUSHUIDEWULICHULIFANGFASHILIYONGWULIZUOYONGFENLIHEQUCHUWUSHUIZHONGWURANWUZHIDEFANGFA。CHANGYONGFANGFAYOUSHAILVJIELIU、ZHONGLIFENLI、LIXINFENLIDENG,XIANGYINGCHULISHEBEIZHUYAOYOUGEZHA、CHENSHACHI、CHENDIANCHIJILIXINJIYANGQIZHONGCHENDIANCHITONGCHENGZHENGEISHUICHULIZHONGDECHENDIANCHI。SHENGWUCHULIFASHILIYONGWEISHENGWUDEDAIXIEZUOYONG,QUCHUWUSHUIZHONGYOUJIWUZHIDEFANGFA。CHANGYONGDEYOUHUOXINGWUNIFA、SHENGWUMOFADENG,HUANYOUYANGHUATANGJIWUSHUITUDICHULIFA。HUAXUECHULIFAZAICHENGSHIWUSHUICHULIZHONGSHIYONGJIAOSHAO,YIBANSHEJICHENGSHIGEISHUICHULIZHONGDEQITAHUAXUEFANGFARUZHONGHEYANGHUAHUANYUAN、LIZIJIAOHUAN、DIANJIEZHUYAOYONGYUGONGYEFEISHUICHULI,HENSHAOYONGYUCHENGSHIWUSHUICHULI。WUNIXUCHULICAINENGFANGZHIERCIWURAN,QICHUZHIFANGFACHANGYOUNONGSUO、YANYANGXIAOHUA、TUOSHUIJIRECHULIDENG。

YIJICHULIZHUYAOZHENDUISHUIZHONGXUANFUWUZHI,CHANGCAIYONGWULIDEFANGFA,JINGGUOYIJICHULIHOU,WUSHUIXUANFUWUQUCHUKEDA40%ZUOYOU,FUZHUYUXUANFUWUDEYOUJIWUYEKEQUCHU30%ZUOYOU;

ERJICHULIZHUYAOQUCHUWUSHUIZHONGCHENGJIAOTIHERONGJIEZHUANGTAIDEYOUJIWURANWUZHI。TONGCHANGCAIYONGDEFANGFASHIWEISHENGWUCHULIFA,JUTIFANGSHIYOUHUOXINGWUNIFAHESHENGWUMOFA。SHENGWUCHULIJIUSHILIYONGWEISHENGWUFENJIEYANGHUAYOUJIWUDEZHEYIGONGNENG,BINGCAIQUYIDINGDERENGONGCUOSHI,CHUANGZAOYOULIYUWEISHENGWUSHENGCHANG、FANZHIDEHUANJING,SHIWEISHENGWUDALIANGFANZHI,YITIGAOQIFENJIEYANGHUAYOUJIWUXIAOLV。WUSHUIJINGGUOYIJICHULIYIHOU,YIJINGQUCHULEPIAOFUWUHEBUFENXUANFUWU,BOD5DEQUCHULVYUE25%~30%。JINGGUOERJICHULIHOU,BOD5QUCHULVKEDA90%YISHANG,ERCHENCHICHUSHUINENGDABIAOPAIFANG。HUOXINGWUNICHULIXITONG,ZAIDANGQIANWUSHUICHULILINGYU,SHIYINGYONGZUIWEIGUANGFANDECHULIJISHUZHIYI,DAZAILUOCIFENGJIDEPUQICHISHIQIFANYINGQI。WUSHUIYUWUNIZAIPUQICHIZHONGHUNHE,WUNIZHONGDEWEISHENGWUJIANGWUSHUIZHONGFUZADEYOUJIWUJIANGJIE,BINGYONGSHIFANGCHUDENENGLIANGLAISHIXIANWEISHENGWUBENSHENDEFANZHIHEYUNDONGDENG。

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三、污水處理的工藝技術

DANGQIANLIUXINGDEWUSHUICHULIGONGYIYOU:ABFA、SBRFA、YANGHUAGOUFA、PUTONGPUQIFA、MOFENLIJIDENG,GEYOUQIZISHENDETEDIAN。

1、ABFA

GAIGONGYIDUIPUQICHIANGAO、DIFUHEFENWEIERJIGONGYANG。AJIFUHEGAO,PUQISHIJIANDUAN,CHANSHENGWUNILIANGDA,WUNIFUHE2.5 kg BOD/(kg MLSS?d)YISHANG,CHIRONGJIFUHEZAI6 kg BOD/(m3?d)YISHANG;BJIFUHEDI,WUNILINGJIAOCHANG。AJIHEBJIYIKEFENQIJIANSHE,AJIYUBJIJIANSHEZHONGJIANCHENDIANCHI。LIANGJICHIZIDEF/M(WURANWULIANGYUWEISHENGWULIANGZHIBI)BUTONG,XINGCHENGBUTONGDEWEISHENGWUQUNTI。ABFAJINGUANYOUJIENENGDEYOUDIAN,DANBUSHIHEDINONGDUSHUIZHI。

2、SBRFA

CIFAJINSHUI、PUQI、CHENDIAN、CHUSHUIZAITONGYIZUOCHIZIZHONGWANCHENG,CHANGYOU3—4GECHIZIGOUCHENGYIZU,LUNLIUYUNZHUAN,YICHIYICHIDIJIANXIEYUNXING,GUCHENGXUPISHIHUOXINGWUNIFA。ZHEZHONG—TIHUAGONGYIDETEDIANSHIGONGYIJIANDAN,YOUYUZHIYOU—GEFANYINGCHI,BUXUERCHENCHI、HUILIUWUNIJIXIANGGUANDESHEBEI,YIBANQINGKUANGXIABUSHEDIAOJIECHI,DUOSHUQINGKUANGXIAKESHENGQUCHUCHENCHI,GUJIESHENGLEZHANDIHETOUZI,NAICHONGJIFUHEQIEYUNXINGFANGSHILINGHUO,KEYICONGSHIJIANSHANGANPAIPUQI、QUEYANGHEYANYANGDEBUTONGZHUANGTAI,SHIXIANCHULINTUODANDEMUDE。

3、PUTONGPUQIFA

QIBIANXINGGONGYIPUTONGPUQIFACHUXIANDEZUIZAO,QISHIJICHULIXIAOGUOHAO,KECHULIDADEWUSHUILIANG,DUIYUJc-rCHANGKEJIZHONGJIANSHEWUNIXIAOHUACHI,SUOCHANSHENGDEZHAOQIKEZUONENGYUANLIYONG。CHUANTONGPUPUFADEBUZUZHICHUSHIZHINENGZUOWEICHANGGUIERJICHULI,BUJUBEITUODANCHULINGONGNENG。JINJINIAN,ZAIGONGCHENGSHIJIANZHONG,TONGGUOJIANGDIPUTONGPUQICHIDERONGJIFUHE,KEYIDADAOTUODANDEMUDE;ZAIPUTONGPUQICHIQIANSHEZHIYANYANGQU,KEYICHULIN,YIKEYONGHUAXUEFACHULIN。CAIYONGPUTONGPUQIFAQUCHUBOD,ZAICHIXINGSHANGYOUDUOZHONGXINGSHI,RUYANGHUAGOU,GONGCHENGSHANGCHENGWEIPUTONGPUQIFADEBIANXINGGONGYI,YIKETONGCHENGWEIPUTONGPUQIFA。

4、YANGHUAGOUFA

SHIZAI20SHIJI50NIANDAICHUQIFAZHANERXINGCHENGDE,YINQIGOUZAOJIANDAN,YIYUGUANLI,HENKUAIDEDAOLETUIGUANGYINGYONG,QIEBUDUANCHUANGXIN。MUQIAN,YANGHUAGOUZAIYINGYONGZHONGFAZHANCHULEDUOZHONGXINGSHI,BIJIAOYOUDAIBIAOXINGDEYOU:①PASHI,JIANCHENGDANGOUSHI,BIAOMIANPUQICAIYONGZHUANSHUAPUQI,SHUISHENYIBANZAI2.5—3.5 m。②AOSHI,JIANCHENGTONGXINYUANSHI,SHIJIYINGYONGDEDUOWEITUOYUANXINGDESANHUANDAOZUCHENG,3GEHUANDAOCAIYONGBUTONGDE.DO,RUWAIHUANWEI0、ZHONGHUANWEI1、NEIHUANWEI2,ZHEYOULIYUTUODANCHULIN。CAIYONGZHUANDIEPUQI,SHUISHENYIBANZAI4.0-4.5 m。③KASHI,JIANCHENGXUNHUANZHELIUSHI,CAIYONGDAOSANXINGXIELUNPUQI,SHUISHENYIBANZAI3.0 mZUOYOU,DANWUNIYIYUCHENJI。④SANGOUSHIYANGHUAGOU(TXINGYANGHUAGOU),GAIGONGYIYOU3GECHIZUCHENG,ZHONGJIANZUOPUQICHI,ZUOYOU2GECHIJIANZUOCHENDIANCHIHEPUQICHI。QITEDIANSHICAIYONGZHUANSHUAPUQI、SHUIQIAN、ZHANDIMIANJIDA、BUSHEYANYANGCHI,BUJUBEICHULINGONGNENGKOUJ。

5、MOFENLIJISHU

YONGMOFENLIDAITICHENDIANJINXINGNISHUIFENLI,KEDAILAIHUOXINGWUNIGONGYIDEYIXIABIANHUA:①BUZAICUNZAIWUNIPENGZHANGWENTI。ZAIDIAOKONGHUOXINGWUNIXITONGSHI,BUBIZAIKAOLVWUNIDECHENJIANGXINGNENG,CONGERSHIGONGYIKONGZHIDADAJIANHUA;②PUQICHIDEWUNINONGDUJIANGDADATIGAO,MLSSKEYIDAYU20 g/L,CONGERSHIXITONGKEZAICHAODANILING、CHAODIFUHEZHUANGTAIXIAYUNXING,CHONGFENMANZUQUCHUGEZHONGWURANWUZHIDEXUYAO;③ZAITONGYANGDECHULIYAOQIUXIA,KESHIPUQICHIRONGJIDADAJIANXIAO,JIESHENGLECHULICHANGDEZHANDIMIANJI;④WUNINONGDUDETIGAO,YAOQIUJIAOGAODEPUQISULV,YINERCHUNYANGPUQIJIANGSUIZHUMODEFENLIERBEIDALIANGCAIYONG。

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四、工藝優選

CHANGGUIHUOXINGWUNIFAHEYANGHUAGOU、SBRGONGYIDEBIJIAO。

①CHANGGUIHUOXINGWUNIFASHIYONGYUZHONGDENGFUHEDEDAXINGWUSHUICHULICHANG。

②YANGHUAGOUFA、SBRFADEJIJIANFEIYONGDI,YUNXINGFEIJIAOGAO。RUOCHULIGUIMOWEI10WANt/d,ZHEJIUYI20NIANJI,YANGHUAGOU、SBRYUCHANGGUIHUOXINGWUNIFADEZONGCHULIFEIYONGDATIXIANGDANG(CHULIFEI=YUNXINGFEI+ZHEJIU+GUDINGZICHANTOUZIDAIKUANLIXI)。GUIMOYUEXIAO,YANGHUAGOU、SBRDEZONGCHULIFEIYONGYUEDI。YINCI,DUIYUZHONGXIAOXINGWUSHUICHULICHANGERYAN,YANGHUAGOU、SBRZAIJINGJI SHANGYOUYI。

③YANGHUAGOU、SBRGONGYIYIBANBUSHECHUCHENCHIHEWUNIXIAOHUACHI,CHULIDANYUANBICHANGGUIHUOXINGWUNIFAJIANSHAO50%YISHANG,CAOZUOGUANLIJIANHUA;QIESHEBEIGUOCHANHUACHENGDUGAO,JIAGEDI。

五、氧化溝、SBR工藝的比較

①JIJIANFEIYONG:SBRSHIHEJIANSHI。DIJIAGAO,YOULIYUSBR,QITUJIANFEIYONGJIAODI,DANSHEBEIFEIYONGJIAOYANGHUAGOUGAO。

②JIUJINSHUI,BOD5.NONGDUERYAN,GAO,YOULIYUYANGHUAGOU;DI,YOULIYUSBR。YIBANYIBOD5=150mg/LWEIJIE,GAOYUCIZHI,YANGHUAGOUJIANFEIYONGDIYUSBR;DIYUCIZHI,ZEFANZHI。

③YUNXINGFEIYONGJIUPUQIFANGSHIERYAN,YANGHUAGOUCHANGYONGJIXIESHI,SBRTONGCHANGYONGGUFENGSHI,HOUZHEBIQIANZHESHENGDIAN;SBRGONGYISHIBIANSHUIWEIYUNXING,ZENGDALEYANGCHENG,YINERDIANHAOYAOBIYANGHUAGOUXIAOXIE,YUNXINGFEIYONGYEDIXIE。

④SBRGONGYIDEZIKONGYAOQIUJIAOGAO。JIUCHUSHUISHUIZHIERYAN,YANGHUAGOUSHIDONGTAICHENDIAN,SBRSHIJINGTAICHENDIAN,HOUZHECHENDIANXIAOLVGENGGAO,CHUSHUISHUIZHIGENGHAO。

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六、總結

WULUNSHIYONGNAZHONGFANGFA,DOULIBUKAIPUQISHEBEIDESHIYONG,XIANZAISHICHANGSHANGDEPUQISHEBEIDUOWEILUOCIFENGJI。WEISHENMEXUANZELUOCIFENGJINI?

JIEGOUJIANDAN,GOUZAOJIESHI,FANGBIANANZHUANG,WEIXIUFANGBIAN,SHIYONGSHOUMINGCHANG,ZHENGJIZHENDONGXIAO,SHIYONGSHIDANGYALIZAIYUNXUDEFANWEINEIJIAYIDIAOJIESHILIULIANGZHIBIANDONGSHENWEI、YALIXUANZEFANWEI HENKUAN,JUYOUQIANGZHISHUQIDETEZHENG。

來源:龍鐵羅茨鼓風機

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