环境工程学报
環境工程學報
배경공정학보
CHINESE JOURNAL OF ENVIRONMENTAL ENGINEERING
2010年
1期
67-70
,共4页
IC反应器%厌氧颗粒污泥%颗粒粒径%沉降速度%产甲烷活性
IC反應器%厭氧顆粒汙泥%顆粒粒徑%沉降速度%產甲烷活性
IC반응기%염양과립오니%과립립경%침강속도%산갑완활성
internal circulation reactor%anaerobic granular sludge%granular diameter%settling velocity%specific methanogenic activity
在常温下用自配葡萄糖废水启动IC反应器,研究了厌氧颗粒污泥的形成过程和特性.IC反应器进水浓度为3 000 mg COD/L,水温为14.5～26℃,25 d内形成了颗粒污泥.结果表明,随着运行时间和容积负荷的增加,颗粒污泥粒径逐渐增大.反应器启动完成后,反应器中＞2 mm的颗粒污泥增加到6.6%,＜0.3 mm的颗粒从57.7%减少到39.4%;vss浓度从24.7 g/L 上升到48.2g/L;VSS/SS 从34.4%增加到72.8%.颗粒污泥的沉降速度与颗粒粒径成正比,0.3～3 mm的颗粒污泥的沉降速度介于34.05～109.75 m/h之间,具有良好的沉降性能.初始接种污泥几乎没有产甲烷活性,与第30 d的初期颗粒污泥相比,成熟的颗粒污泥的产甲烷活性提高了46.7%.
在常溫下用自配葡萄糖廢水啟動IC反應器,研究瞭厭氧顆粒汙泥的形成過程和特性.IC反應器進水濃度為3 000 mg COD/L,水溫為14.5～26℃,25 d內形成瞭顆粒汙泥.結果錶明,隨著運行時間和容積負荷的增加,顆粒汙泥粒徑逐漸增大.反應器啟動完成後,反應器中＞2 mm的顆粒汙泥增加到6.6%,＜0.3 mm的顆粒從57.7%減少到39.4%;vss濃度從24.7 g/L 上升到48.2g/L;VSS/SS 從34.4%增加到72.8%.顆粒汙泥的沉降速度與顆粒粒徑成正比,0.3～3 mm的顆粒汙泥的沉降速度介于34.05～109.75 m/h之間,具有良好的沉降性能.初始接種汙泥幾乎沒有產甲烷活性,與第30 d的初期顆粒汙泥相比,成熟的顆粒汙泥的產甲烷活性提高瞭46.7%.
재상온하용자배포도당폐수계동IC반응기,연구료염양과립오니적형성과정화특성.IC반응기진수농도위3 000 mg COD/L,수온위14.5～26℃,25 d내형성료과립오니.결과표명,수착운행시간화용적부하적증가,과립오니립경축점증대.반응기계동완성후,반응기중＞2 mm적과립오니증가도6.6%,＜0.3 mm적과립종57.7%감소도39.4%;vss농도종24.7 g/L 상승도48.2g/L;VSS/SS 종34.4%증가도72.8%.과립오니적침강속도여과립립경성정비,0.3～3 mm적과립오니적침강속도개우34.05～109.75 m/h지간,구유량호적침강성능.초시접충오니궤호몰유산갑완활성,여제30 d적초기과립오니상비,성숙적과립오니적산갑완활성제고료46.7%.
The formation and characteristics of anaerobic granular sludge in internal circulation (IC) anaerobic reactor starting by synthetic glucose wastewater was studied at normal temperature. In 25 days, granular sludge can be found in the reactor; the related condition was that the influent COD was 3 000 mg/L and temperature was at 14.5～26℃. The results showed that, with the reactor's runtime and organic loading increasing, the diameter of granules increased. After the start-up, the percent of the granular sludge which size was more than 2 mm increased to 6.6% , and for smaller than 0.3 mm granular sludge, it reduced from 57.7% to 39.4% . The volatile sludge concentration increased from 24.7 to 48.2 g/L and VSS/SS increased from 34.4% to 72.8% . The settling velocity of granular sludge was proportional to its diameter. For granules between 0.3 and 3 mm, the settling velocity was in the range of 34.05～109.75 m/h, which has a good settling performance. Inoculation sludge had little specific methanogenic activity, and compared with the early granular sludge on the 30~(th) day, specific methanogenic activity of mature granular sludge was improved by 46.7% .
