一、概述

氣(qi)浮處理法就(jiu)是向廢(fei)(fei)水(shui)中(zhong)通(tong)入空(kong)氣(qi)，并(bing)以(yi)(yi)微小(xiao)氣(qi)泡形(xing)式從(cong)水(shui)中(zhong)析出成為載體，使廢(fei)(fei)水(shui)中(zhong)的乳化(hua)油、微小(xiao)懸浮顆粒(li)等污染(ran)物(wu)質粘(zhan)附在(zai)氣(qi)泡上，隨(sui)氣(qi)泡-起上浮到水(shui)面，形(xing)成泡沫(mo)-氣(qi)、水(shui)、顆粒(li)(油)三相混合體， 通(tong)過收集泡沫(mo)或浮渣(zha)達到分(fen) 離雜質、凈化(hua)廢(fei)(fei)水(shui)的目的。氣(qi)浮技(ji)術近年來廣泛應(ying)用于給排水(shui)及污水(shui)處理中(zhong)，可以(yi)(yi)有效的去(qu)處廢(fei)(fei)水(shui)中(zhong)難(nan)以(yi)(yi)沉淀的輕浮絮體。

二、工作原理

HNQF型氣(qi)(qi)(qi)浮(fu)機(ji)依(yi)靠水(shui)(shui)(shui)(shui)泵將(jiang)(jiang)氣(qi)(qi)(qi)浮(fu)處理(li)后凈水(shui)(shui)(shui)(shui)的一(yi)部分(fen)(fen)回流加(jia)(jia)壓(ya)(ya)(ya)進入溶(rong)(rong)氣(qi)(qi)(qi)罐，同時(shi)通(tong)過空壓(ya)(ya)(ya)機(ji)的壓(ya)(ya)(ya)力(li)將(jiang)(jiang)空氣(qi)(qi)(qi)壓(ya)(ya)(ya)入溶(rong)(rong)氣(qi)(qi)(qi)罐中(zhong)，空氣(qi)(qi)(qi)在溶(rong)(rong)氣(qi)(qi)(qi)罐中(zhong)通(tong)過填料(liao)與(yu)水(shui)(shui)(shui)(shui)充分(fen)(fen)接觸完全融入水(shui)(shui)(shui)(shui)中(zhong)，然后通(tong)過溶(rong)(rong)氣(qi)(qi)(qi)釋(shi)放器將(jiang)(jiang)溶(rong)(rong)汽水(shui)(shui)(shui)(shui)壓(ya)(ya)(ya)力(li)釋(shi)放到常壓(ya)(ya)(ya)，釋(shi)出(chu)大量的微(wei)氣(qi)(qi)(qi)泡將(jiang)(jiang)和原水(shui)(shui)(shui)(shui)中(zhong)的絮體顆粒(li)粘(zhan)附(fu)(fu)(fu)。絮體由氣(qi)(qi)(qi)泡浮(fu)力(li)帶至水(shui)(shui)(shui)(shui)面(mian)由水(shui)(shui)(shui)(shui)面(mian)的刮渣機(ji)收集處理(li)。對含有細分(fen)(fen)散親水(shui)(shui)(shui)(shui)性(xing)顆粒(li)雜(za)質(zhi)(例如紙(zhi)漿、煤泥等)的工業廢水(shui)(shui)(shui)(shui)，采用(yong)氣(qi)(qi)(qi)浮(fu)法處理(li)時(shi)，除(chu)投加(jia)(jia)電解質(zhi)混凝劑進行(xing)表(biao)(biao)面(mian)電中(zhong)和外，還可(ke)向(xiang)水(shui)(shui)(shui)(shui)中(zhong)投加(jia)(jia)(或水(shui)(shui)(shui)(shui)中(zhong)存在)浮(fu)選劑，也可(ke)使顆粒(li)的親水(shui)(shui)(shui)(shui)性(xing)表(biao)(biao)面(mian)改變為疏水(shui)(shui)(shui)(shui)性(xing)，并能夠與(yu)氣(qi)(qi)(qi)泡粘(zhan)附(fu)(fu)(fu)。當浮(fu)選劑(亦屬二親分(fen)(fen)子組成的表(biao)(biao)面(mian)活性(xing)物)的極性(xing)端被吸附(fu)(fu)(fu)在親水(shui)(shui)(shui)(shui)性(xing)顆粒(li)表(biao)(biao)面(mian)后，其非(fei)極性(xing)端則朝向(xiang)水(shui)(shui)(shui)(shui)中(zhong)，這樣具有親水(shui)(shui)(shui)(shui)性(xing)表(biao)(biao)面(mian)的物質(zhi)即轉(zhuan)變為疏水(shui)(shui)(shui)(shui)性(xing)，從而能夠與(yu)氣(qi)(qi)(qi)泡粘(zhan)附(fu)(fu)(fu)，并隨其上浮(fu)到水(shui)(shui)(shui)(shui)面(mian)。

三、特點

1、處理能力大、效率高、占地少;工藝過程及設備(bei)構造簡單，便(bian)于使用(yong)、維護。

2、能消(xiao)除污(wu)泥膨化(hua);對(dui)低溫、低濁、含藻類多(duo)的水源，采用氣(qi)浮機可(ke)以得到較(jiao)好效果。

3、氣浮是(shi)向(xiang)水(shui)中(zhong)曝(pu)氣，對去除水(shui)中(zhong)的表(biao)面活性劑及臭(chou)氧有明顯效果，同時由于曝(pu)氣增(zeng)加了水(shui)中(zhong)的溶解氧，為后續處(chu)理提供了有利條(tiao)件。