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雨水利用

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雨水利用

發布日期:2018-06-28 作者: 點擊:


足球竞彩网  JINRU21SHIJI,WOMENMIANLINHONGLAOZAIHAI、GANHANQUESHUI、SHUIHUANJINGEHUASANDAWENTI,SHUIYIJINGCHENGWEIQUANSHIJIEGEGUORENMINGUANZHUDEJIAODIAN,RENLEISHEHUIYUDAOLEQIANSUOWEIYOUDESHUIWENTIDETIAOZHAN,ERZAICHENGSHISHUIZIYUANJINQUEYIJICHENGSHIYUSHUILIYONGJISHUKUAISUFAZHANDEBEIJINGXIA,YUSHUIYINQICHULIFANGFAJIANDANHE CHENGBENDILIANERCHENGWEIYIZHONGXINDEKELIYONGSHUIZIYUAN,YUSHUILIYONGSHICUJINSHUIZIYUANKECHIXULIYONGDEZHONGYAOTUJINGZHIYI。

  1YUSHUILIYONGDEHANYI

足球竞彩网  SUOWEIYUSHUILIYONG,JIUSHICAIYONGRENGONGCUOSHIZHIJIEDUITIANRANJIANGSHUIJINXINGSHOUJI、CHUCUNBINGJIAYILIYONGDEFANGSHI。YUSHUILIYONGSHIYIZHONGZONGHEKAOLVYUSHUIJINGLIUWURANKONGZHI、CHENGSHIFANGHONGYIJISHENGTAIHUANJINGDEGAISHANDENGYAOQIU,JIANLIBAOKUOWUMIANYUSHUIJIXUXITONG、YUSHUIJIEWUYUSHENTOUXITONG、SHENGTAIXIAOQUYUSHUILIYONGXITONGDENG,JIANGYUSHUIYONGZUOPENSALUMIAN、GUANGAILVDI、XUSHUICHONGCEDENGCHENGSHIZAYONGSHUIDEJISHUSHOUDUAN。RUGUONENGGOUYOUXIAODELIYONGHEKONGZHIYUSHUI,WOMENJIUKEYISHIXIAN:JIANSHAOCHENGSHINEILAO;YOUXIAODEJIEYUESHUIZIYUAN;SUOXIAOCHENGSHIYUSHUIGUANWANGGUIMO,JIANSHAOCHENGSHIWUSHUICHULISHESHIDETOUZI;HUIBUDIXIASHUI,JIANSHAOHAISHUIRUQIN,GAISHANSHENGTAIHUANJING;HUANJIENEILUHUBODEMIANYUANWURANHEJIANSHAOYANJIANQUYUDEZHONGZHICHENGBEN。

  2LIYONGYUSHUIDEZHONGYAOYIYI

  雨水收集足球竞彩网后不僅可以減輕暴雨期間城市的排水壓力,減少水污染,還可以節省優質自來水,從而解決城市水資源短缺,把資源利用、預防洪澇、城市景觀和環境改善等功能融為一體,一方面雨水利用可以減緩洪澇災害、改善生態環境。通過建立完整的雨水利用系統(由河流水系、坑塘、濕地、綠色水道和下滲系統共同構成),就可以有效調節雨水徑流的高峰流量,待最大流量下降后,再將雨水慢慢排出,大大減輕城市排水管網的壓力,減緩洪澇災害的發生,同時還可減少排水設施投資,而且采用雨水滲透設施,使雨水滲透至地下,不僅涵養了地下水,還可增加淺層土壤的含水量,調節氣候,從而遏制城市熱島效應、干島效應;建立分散式或集中式雨水集蓄滲透設施,如集雨深井等,將雨水回灌地下,可緩解地下水位下降,避免因地下水過度開采而導致地面沉降等的發生;一方面雨水利用可以減少污染物排放。雨水沖刷屋頂、路面等硬質鋪裝后,其污染比較嚴重,通過坑塘、濕地和綠化通道等沉淀和凈化,再排到雨水管網或河流,就會起到攔截雨水徑流和沉淀懸浮物的作用;一方面雨水利用能實現雨水資源化。通過保護河流水系的自然形態、增加坑塘濕地等下滲系統,可以保障地表水和地下水的健康循環和交換,可以間接地補充城市水資源;而且通過凈化之后的雨水,也可以直接補充水資源用于非飲用水。

足球竞彩网  3YUSHUILIYONGGUIHUACUOSHI

  YUSHUILIYONGBUJINKEYIJIEJUESHUIZIYUANDUANQUEWENTI,YEWEISHUIZIYUANCHANGQIKECHIXUFAZHANTIGONGLEYIGEYOUXIAOTUJING,DUIBAOCHILIANGHAODESHUISHENGTAIHUANJINGJUYOUZHONGYAOYIYI,TONGSHI,YUSHUILIYONGDEZIYUANHUAYEJIANQINGLEPAISHUIHEFANGHONGDEYALI,CONGERJIANSHAOLEXIANGYINGDEGONGCHENGTOUZI,ZAIYUSHUILIYONGGUIHUAYICAIQUYIXIACUOSHI:YISHIJIEHETUDILIYONGGUIHUA,LIYONGWADI、HEHUSHUIXIHUOKAIWARENGONGHE、SHUITANGLAICUNZHUYIDINGDEYUSHUI,ZUOWEIHUANJINGYONGSHUI,SHIZHENGLVHUA,KEYOUXIAODIHUANJIELEYONGSHUIYALI,JIESHENGLEYONGSHUIKAIZHI,TONGSHIHUANQIDAOLEJIESHUIZUOYONG,LIYONGGONGYUANZHONGDEHUMIANZUOWEIXUSHUIHU,CUNZHUYUSHUI,BINGLIYONGXIANYOUHEDAOZENGJIAJINGGUAN;ERSHICAIQUYUSHUISHENTOULIYONGCUOSHI,RUSHENTOUJING、SHENTOUGUAN、SHENTOUCHIDENG,RANGYUSHUIHUIGUANDIXIA,BUCHONGHANYANGDIXIASHUIYUAN,ZAIXINJIANJUMINXIAOQU、TINGCHECHANG、BUXINGDAO、GUANGCHANGDENGCHANGSUOCAIYONGSHENSHUIZHUAN、SHENSHUIHUNNINGTUDENGCAILIAO,CONGERXINGCHENGTOUSHUIXINGDIMIAN,YIRUSHENHUIBUDIXIASHUI;SANSHIZHUBUTUIGUANGWUDINGLVHUAYUSHUILIYONGXITONG,WUDINGLVHUANENGQIDAOXUEJIANJINGLIULIANG,JIANQINGWURANHECHENGSHIREDAOXIAOYING,DIAOJIEJIANZHUWENDU,MEIHUACHENGSHIHUANJINGDEZUOYONG;SISHIZAICHENGSHIGAOCHENGGUIHUAZHONG,YINGYOULIYUDAOLUJINGLIUJINRULVDI,YICHONGFENLIYONGZIRANJINGHUANENGLI,ZENGJIAYUSHUIRUSHENLIANG,WUMIANJINGLIUYEYINGYINRUHUATANLVDI,XIANDAICHENGSHIYUSHUILIYONGSHIYIXIANGSHEJIDUOXUEKEDE、FUZADEXITONGGONGCHENG,SUOYIZAIXUANZEYUSHUILIYONGGUIHUAFANGANSHI,YAOTEBIEZHUYIGUOJIA、DIYUJIXIANCHANGGEZHONGTIAOJIANDECHAYI,JISHIZAITONGYIGECHENGSHI,YOUYUXIANGMUJIANGEZHONGYINSUHETIAOJIANDEBUTONG,SUOYIYICAIYONGDEFANGANYEKENENGWANQUANBUTONG,QIEWUSHENGBANYINGTAO。

足球竞彩网  4YUSHUICHULIGONGYIXUANZEJIYUSHUISHOUJIHUIYONGXITONG

  雨水水質與匯水面材料、空氣質量、兩次降雨間隔時間等因素有關,在屋面、小區道路、市政干道等不同雨水中以屋面雨水利用價值最高,路面徑流水質復雜,要比屋面雨水更難以收集控制,我們通過對屋面雨水水質的可生化性進行分析,一般 BOD5/COD的值在0.10~0.15,屋面雨水可生化性較差,可采用常規物化和自然凈化技術來進行處理,對于常規物化技術為采用沉淀、過濾和消毒的工藝進行雨水處理;對于自然凈化技術,則是采用植被淺溝、土壤綠地及屋頂綠化等工藝,通過植被來降低雨水流速,從而使污染物在土壤的過濾、滲透、吸收及生物降解的聯合作用下被去除,以達到控制雨水水質的目的,而自然凈化設施可單獨使用,也可與物化處理等聯合使用,其建造費用低、運行節能、管理簡單、適應性廣、并具有綠化景觀的功能,有較大的優勢。而雨水收集主要包括屋面雨水、廣場雨水、綠地雨水和污染較輕的路面雨水等,屋面雨水收集方式按雨水管道的位置又分為外收集系統和內收集系統,外收集系統由檐溝、收集管、水落管、連接管組成,內收集系統是指在屋面設雨水斗,建筑內部有雨水管道的系統,雨水收集回用系統則是由匯水區、收集管路、蓄水池和凈化設施等部分組成,建筑物收集雨水的一般流程是:屋頂的雨水通過導管引人設在地下的雨水沉沙池,雨水經沉積后流人蓄水池,再由水泵抽至雜用水蓄水池,經加氯消毒后進入中水道系統,然后用來供給沖廁、車輛沖洗、娛樂性水景等等,在收集雨水時,由于屋面雨水不會混入太多雜質,所以應予以首先考慮,現在城市很多已建屋面均為瀝青油氈,對雨水水質影響較大,目前可暫不進行雨水回收,而新建屋面應大力推廣瓦或磚石鋪裝屋面,以提高收集雨水的水質,在降雨初期徑流水質較差,且水質渾濁、色度大,所以在利用時應設置初期棄流措施,隨著人們對居住環境要求的提高,水景也逐漸成為居住區景觀的重要組成部分,據調查一些水景水源除少數的人工湖為自然降水以外,其余均來源于自來水,且多數的水景因受到日耗水量的制約而無法達到預期的效果,或者干脆不充水運行,而利用雨水作為水源,就是獲得有保障的景觀補水的有效途徑。

  5GUANYUYUSHUILIYONGDEJIANYI

  WEILESHIXIANSHUIZIYUANDEKECHIXULIYONG,SHIYUSHUILIYONGGENGJIAZIYUANHUA,CUJINYUSHUILIYONGDEKUAISUYOUXIAODEFAZHAN,WOMENYAOJIEJIANGUONEIWAIYUSHUILIYONGDECHENGGONGFANLI,JIEJIANTAMENDEJINGYAN,CONGKAIFAZIYUAN、SHENGTAIBUCHANGYUCHENGSHIKECHIXUFAZHANDEGAODUJIAYIZHONGSHI,GEIYUZHENGCEFAGUIDEZHICHI,YINCI,TICHUYIXIAJIANYI:YISHIZHIDINGXIANGYINGDEYUSHUILIYONGTIAOLIHEFAGUI,BAYUSHUILIYONGNARUCHENGSHIZHENGTIGUIHUA;ERSHIQIANGHUAGUANLIBINGSHELIZHUANXIANGJIJIN;SANSHIJIAQIANGYUSHUILIYONGDEKEYANTUIGUANGYUCHANYEYITIHUA;SISHIJIANLIYUSHUIRUSHENYUHELIGAOXIAODEYUSHUIJIXUXITONG。

  6JIEYU

  ZONGSHANGSUOSHU,SUIZHUSHEHUIDEFAZHAN,RENLEIDUIZIYUANXUQIUDEZENGCHANGHEZIYUANDUANQUEZHIJIANDEMAODUNBIANDERIYIJIAJU,SHUIDEGONGGEIYUXUQIUMAODUNYERIYITUCHU,SUOYIJINXINGSHUIZIYUANDEHELIKAIFALIYONGYICHENGWEIQUANSHIJIESUOMIANLINDEGONGTONGWENTI,ERYUSHUILIYONGJIUSHIYIZHONGXINXINGDEJISHU,JUYOUJIEYUESHUIZIYUAN、KONGZHISHUITULIUSHI、FANGZHISHUILAOZAIHAI、JIANSHAOSHUIWURANHEGAISHANCHENGSHISHENGTAIHUANJINGDENGZONGHEXIAOYI,SHIYINGXIANDAIHUACHENGSHIDUISHUIZIYUANBAOHUYUKECHIXULIYONGDEYAOQIU,SHIYINGCHENGSHISHUISHENGTAIHUANJINGBAOHUJIKECHIXUFAZHANDEYAOQIU。

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