本文關鍵詞： 甘油 電芬頓 活性污泥法 芬頓 COD 廢水　出處：《吉林大學》2017年碩士論文　論文類型：學位論文

【摘要】：甘油洗滌廢水是電纜套生產過程中產生的污水,其具有有機物濃度高、可生化性差、無機離子濃度低的特點,污水中含有醛、酮、縮醛、縮酮以及聚合物,直接排放會危害水生生物、污染環(huán)境。目前針對這類污廢水的處理技術比較少見,同時國家對企業(yè)污廢水的排放標準提高,企業(yè)需要對污廢水進行更有效的處理,因此探尋對甘油洗滌廢水有效的處理方法具有現(xiàn)實意義。工業(yè)甘油在各行業(yè)有廣泛的應用。為了探尋一種合適的甘油洗滌廢水處理方法,本次研究以某電纜套制造企業(yè)在生產過程中產生的實際甘油洗滌廢水為實驗材料,采用芬頓試劑法以及電芬頓法對廢水進行預處理,以提高廢水可生化性,確定兩種方法對廢水的處理效果以及最佳操作條件。然后對預處理廢水進行活性污泥法處理。本次研究得出,芬頓試劑法最佳操作條件為廢水初始p H=3,硫酸亞鐵投加量2.0 g/L,30%過氧化氫投加量為4.0 ml/L,反應時間2 h,廢水的COD去除率約為33%;電芬頓法最佳操作條件為在無攪拌的操作條件下,p H=4,2.0 g/L硫酸鈉,0.50 g/L Fe SO4·7H2O,恒定電流0.03 A,COD去除率約為55%。兩種方法相比,電芬頓法對廢水的COD去除效果更好。對處理過的廢水可生化性進行測定,電芬頓處理的廢水可生化性明顯提高,這有利于對廢水進行生物法處理�；钚晕勰喾ㄟM一步處理電芬頓出水,在污泥質量濃度4000 mg/L左右,溶解氧為6 mg/L左右時,水溫11℃左右,反應時間24 h的條件下,逐步提高進水COD濃度,活性污泥法運行穩(wěn)定,處理效果較好。在進水COD濃度為1000 mg/L左右時,出水COD濃度低于50 mg/L;在進水COD濃度為1800 mg/L左右時,出水COD濃度約為120 mg/L,在進水COD濃度為4000 mg/L左右時,出水COD濃度約為270 mg/L,達到《污水綜合排放標準》(GB8978-1996)的三級排放標準,可以排入城市管網。本次研究針對甘油洗滌廢水進行初步處理方法探討,使用的電芬頓法-活性污泥法聯(lián)合工藝處理有一定的效果。
[Abstract]:Glycerol washing wastewater is a kind of wastewater produced in the process of cable sleeve production. It has the characteristics of high concentration of organic matter, poor biodegradability and low concentration of inorganic ions. The wastewater contains aldehydes, ketals, acetals, ketals and polymers. Direct discharge will harm aquatic organisms and pollute the environment. At present, the treatment technology for this kind of wastewater is relatively rare. At the same time, the state standards for discharge of wastewater from enterprises have been raised, so enterprises need to deal with wastewater more effectively. Therefore, it is of practical significance to explore an effective treatment method for glycerol washing wastewater. Industrial glycerol is widely used in various industries. In order to find a suitable treatment method for glycerin washing wastewater, In this study, the actual glycerol washing wastewater produced in a cable sleeve manufacturing enterprise was used as the experimental material, and the wastewater was pretreated by Fenton reagent method and electric Fenton method in order to improve the biodegradability of the wastewater. Determine the two methods of wastewater treatment and the best operating conditions. Then the pretreatment of wastewater treatment by activated sludge process. The optimal operating conditions of Fenton reagent method were as follows: initial pH _ 3 of wastewater, dosage of ferrous sulfate 2.0 g / L ~ (30%) hydrogen peroxide 4.0 ml 路L ~ (-1), reaction time 2 h, COD removal rate of wastewater about 33%, and operation without stirring was the best operation condition of electric Fenton method. Under this condition, the removal rate of 0.50 g / L Fe SO4 路7H _ 2O with constant current of 0.03 Ag 路7H _ 2O was about 55%. The biodegradability of treated wastewater was determined and the biodegradability of wastewater treated by electric Fenton method was improved obviously. This is beneficial to the biological treatment of wastewater. The activated sludge process is used to further treat the electric Fenton effluent. When the sludge concentration is about 4 000 mg/L, the dissolved oxygen is about 6 mg/L, the water temperature is about 11 鈩，

本文編號：1551513