氧(yang)(yang)化塘(tang)的(de)(de)作(zuo)用(yong)(yong)機理(li)(li)(li)主(zhu)(zhu)(zhu)要是通過各物種(zhong)間的(de)(de)相互作(zuo)用(yong)(yong)形成(cheng)食(shi)物鏈生(sheng)態系統(tong)(tong),其(qi)中不僅有(you)分(fen)解者細菌(jun)和真(zhen)菌(jun),生(sheng)產者藻類和其(qi)他水(shui)(shui)(shui)(shui)生(sheng)植物,而且還(huan)有(you)消費者如魚、蝦(xia)、貝、水(shui)(shui)(shui)(shui)鳥等,三者分(fen)工協作(zuo),對(dui)污(wu)水(shui)(shui)(shui)(shui)中的(de)(de)污(wu)染(ran)物進(jin)行有(you)效的(de)(de)處(chu)(chu)理(li)(li)(li)和利用(yong)(yong)。構成(cheng)氧(yang)(yang)化塘(tang)處(chu)(chu)理(li)(li)(li)系統(tong)(tong)的(de)(de)單(dan)元主(zhu)(zhu)(zhu)要有(you)兼(jian)性(xing)塘(tang)、好氧(yang)(yang)塘(tang)、厭(yan)(yan)氧(yang)(yang)塘(tang)和熟化塘(tang)4種(zhong),各塘(tang)都有(you)其(qi)各自的(de)(de)功能(neng)。厭(yan)(yan)氧(yang)(yang)塘(tang)主(zhu)(zhu)(zhu)要用(yong)(yong)于(yu)高濃度(du)(du)污(wu)水(shui)(shui)(shui)(shui)的(de)(de)預處(chu)(chu)理(li)(li)(li),一般處(chu)(chu)于(yu)系統(tong)(tong)前段;兼(jian)性(xing)塘(tang)和好氧(yang)(yang)塘(tang)主(zhu)(zhu)(zhu)要用(yong)(yong)于(yu)低濃度(du)(du)污(wu)水(shui)(shui)(shui)(shui)的(de)(de)處(chu)(chu)理(li)(li)(li)或在厭(yan)(yan)氧(yang)(yang)塘(tang)之后對(dui)BOD物質進(jin)一步(bu)降解;熟化塘(tang)用(yong)(yong)于(yu)去除病原體(ti)。氧(yang)(yang)化塘(tang)作(zuo)為一種(zhong)高效率、低能(neng)耗(hao)的(de)(de)污(wu)水(shui)(shui)(shui)(shui)處(chu)(chu)理(li)(li)(li)技(ji)術,在勝利油(you)田樁西采油(you)廢(fei)水(shui)(shui)(shui)(shui)處(chu)(chu)理(li)(li)(li)中得(de)到了應用(yong)(yong),工藝流(liu)程為:隔(ge)油(you)-氣浮(fu)-厭(yan)(yan)氧(yang)(yang)塘(tang)-好氧(yang)(yang)塘(tang)-外排(pai),處(chu)(chu)理(li)(li)(li)效果見表3。
表3 氧化塘法的處理效果 mg/L
采樣地點 |
pH |
石油類 |
COD |
BOD5 |
揮發酚 |
硫化物 |
進水口 |
7.56 |
10.60 |
166.7 |
56.6 |
1.20 |
5.92 |
出水口 |
7.90 |
3.20 |
127.9 |
12.8 |
未檢出 |
未檢出 |
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