安徽农学通报
安徽農學通報
안휘농학통보
AUHUI AGRICULTURAL SCIENCE BULLETIN
2012年
17期
131-133
,共3页
DE氧化沟%非丝状菌膨胀%反硝化作用%污泥上浮
DE氧化溝%非絲狀菌膨脹%反硝化作用%汙泥上浮
DE양화구%비사상균팽창%반초화작용%오니상부
DE oxidation ditch%The non-filamentous bulking%Denitrification%Sludge floating
以前置厌氧DE氧化沟为研究对象,探究终沉池2次污泥上浮主要成因并就此提出相应控制对策。结果表明,活性污泥非丝状菌膨胀、终沉池反硝化作用及污泥腐化是两次污泥上浮的主要原因。其中,活性污泥非丝状菌膨胀是由低温所致,反硝化作用及污泥腐化主要是由污泥在终沉池停留时间过长所致,此外,氧化沟出水硝氮含量过高也是造成反硝化作用的原因。随着气温逐渐回升并通过加大污泥回流量及剩余污泥排放量等措施,缩短污泥在终沉池停留时间,有效的控制了污泥上浮。
以前置厭氧DE氧化溝為研究對象,探究終沉池2次汙泥上浮主要成因併就此提齣相應控製對策。結果錶明,活性汙泥非絲狀菌膨脹、終沉池反硝化作用及汙泥腐化是兩次汙泥上浮的主要原因。其中,活性汙泥非絲狀菌膨脹是由低溫所緻,反硝化作用及汙泥腐化主要是由汙泥在終沉池停留時間過長所緻,此外,氧化溝齣水硝氮含量過高也是造成反硝化作用的原因。隨著氣溫逐漸迴升併通過加大汙泥迴流量及剩餘汙泥排放量等措施,縮短汙泥在終沉池停留時間,有效的控製瞭汙泥上浮。
이전치염양DE양화구위연구대상,탐구종침지2차오니상부주요성인병취차제출상응공제대책。결과표명,활성오니비사상균팽창、종침지반초화작용급오니부화시량차오니상부적주요원인。기중,활성오니비사상균팽창시유저온소치,반초화작용급오니부화주요시유오니재종침지정류시간과장소치,차외,양화구출수초담함량과고야시조성반초화작용적원인。수착기온축점회승병통과가대오니회류량급잉여오니배방량등조시,축단오니재종침지정류시간,유효적공제료오니상부。
The paper adopted the front anaerobic DE oxidation ditch as the research object to explore the main causes of final sedimentation pool twice sludge floating and to propose the corresponding control responses.The results show that the non-filamentous activated sludge bulking,final settling tank denitrification and sludge corruption are the main reasons of the two sludge floating.Among them,the non-filamentous activated sludge bulking were caused by low temperature,denitrification and sludge corruption were caused by the sludge stayed in the final settling tank for a long time,in addition,high nitrate nitrogencontent in oxidation ditch water also contributed to the reasons for denitrification.The sludge floating were controlled effectively by increasing the sludge return flows and the remaining sludge emissions to reduce the sludge stay time in the final settling tank as the temperatures rising gradually.
