摘要:

采用水(shui)(shui)耕蔬(shu)(shu)菜人(ren)(ren)工(gong)(gong)濕(shi)(shi)(shi)地(di)(di)與(yu)垂直流人(ren)(ren)工(gong)(gong)濕(shi)(shi)(shi)地(di)(di)組(zu)合(he)工(gong)(gong)藝(yi)處理(li)農村生活污水(shui)(shui)灌(guan)溉尾(wei)水(shui)(shui),針對冬季(ji)灌(guan)溉尾(wei)水(shui)(shui)量大,而系(xi)(xi)(xi)統(tong)(tong)處理(li)效果(guo)下(xia)降問題(ti),對組(zu)合(he)工(gong)(gong)藝(yi)進行(xing)了運行(xing)效果(guo)及(ji)水(shui)(shui)力(li)負荷(he)等(deng)工(gong)(gong)藝(yi)參數的(de)(de)優化(hua)研究(jiu)。大棚對系(xi)(xi)(xi)統(tong)(tong)能起到(dao)(dao)一定的(de)(de)保(bao)溫(wen)效果(guo),系(xi)(xi)(xi)統(tong)(tong)進出水(shui)(shui)水(shui)(shui)溫(wen)均(jun)(jun)高出未采取保(bao)溫(wen)強化(hua)措(cuo)施系(xi)(xi)(xi)統(tong)(tong)2℃左右(you)。在冬季(ji)水(shui)(shui)耕蔬(shu)(shu)菜人(ren)(ren)工(gong)(gong)濕(shi)(shi)(shi)地(di)(di)與(yu)垂直流人(ren)(ren)工(gong)(gong)濕(shi)(shi)(shi)地(di)(di)受(shou)溫(wen)度(du)影響(xiang),污染物去(qu)(qu)(qu)(qu)除(chu)效能顯著(zhu)下(xia)降,隨著(zhu)水(shui)(shui)力(li)負荷(he)的(de)(de)增(zeng)(zeng)大,水(shui)(shui)耕蔬(shu)(shu)菜人(ren)(ren)工(gong)(gong)濕(shi)(shi)(shi)地(di)(di)對COD、TN及(ji)TP的(de)(de)平(ping)均(jun)(jun)去(qu)(qu)(qu)(qu)除(chu)率(lv)和去(qu)(qu)(qu)(qu)除(chu)負荷(he)呈先增(zeng)(zeng)加后(hou)減小趨勢,其對COD、TP的(de)(de)平(ping)均(jun)(jun)去(qu)(qu)(qu)(qu)除(chu)率(lv)均(jun)(jun)在0.3m3/(m2·d)附(fu)近達到(dao)(dao)最大,分別為(wei)33.4%和11.5%,TN的(de)(de)平(ping)均(jun)(jun)去(qu)(qu)(qu)(qu)除(chu)率(lv)在0.4m3/(m2·d)附(fu)近達到(dao)(dao)最大,為(wei)8.5%;垂直流人(ren)(ren)工(gong)(gong)濕(shi)(shi)(shi)地(di)(di)隨著(zhu)水(shui)(shui)力(li)負荷(he)的(de)(de)增(zeng)(zeng)大,對COD、TN、NH4+-N和TP的(de)(de)平(ping)均(jun)(jun)去(qu)(qu)(qu)(qu)除(chu)率(lv)的(de)(de)變化(hua)趨勢與(yu)水(shui)(shui)耕蔬(shu)(shu)菜人(ren)(ren)工(gong)(gong)濕(shi)(shi)(shi)地(di)(di)相似(si),在0.2m3/(m2·d)處達到(dao)(dao)最大,分別為(wei)56.3%、29.3%、23.8%和31.3%。上(shang)述(shu)結果(guo)與(yu)人(ren)(ren)工(gong)(gong)濕(shi)(shi)(shi)地(di)(di)在其他溫(wen)度(du)較高季(ji)節去(qu)(qu)(qu)(qu)除(chu)率(lv)一般隨水(shui)(shui)力(li)負荷(he)降低而呈上(shang)升趨勢的(de)(de)結果(guo)顯著(zhu)不(bu)同(tong),表明(ming)在冬季(ji)依靠(kao)一味降低水(shui)(shui)力(li)負荷(he)無法(fa)達到(dao)(dao)提高系(xi)(xi)(xi)統(tong)(tong)去(qu)(qu)(qu)(qu)除(chu)效能的(de)(de)目的(de)(de)。

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