COMPARISON OF DIFFERENT BIOFILM CULTURING METHODS IN MBBR FOR OIL SHALE RETORTING WASTEWATER TREATMENT

LI Na; DENG Yi-xing; LI Guo-de; WU Shi-wei; HU Xiao-min; DAI Lan

doi:10.13205/j.hjgc.202106010

Volume 39 Issue 6

Jan. 2022

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LI Na, DENG Yi-xing, LI Guo-de, WU Shi-wei, HU Xiao-min, DAI Lan. COMPARISON OF DIFFERENT BIOFILM CULTURING METHODS IN MBBR FOR OIL SHALE RETORTING WASTEWATER TREATMENT[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 59-64,178. doi: 10.13205/j.hjgc.202106010

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LI Na, DENG Yi-xing, LI Guo-de, WU Shi-wei, HU Xiao-min, DAI Lan. COMPARISON OF DIFFERENT BIOFILM CULTURING METHODS IN MBBR FOR OIL SHALE RETORTING WASTEWATER TREATMENT[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 59-64,178. doi: 10.13205/j.hjgc.202106010

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COMPARISON OF DIFFERENT BIOFILM CULTURING METHODS IN MBBR FOR OIL SHALE RETORTING WASTEWATER TREATMENT

doi: 10.13205/j.hjgc.202106010

1. Experimental center of Shenyang Normal University, Shenyang 110034, China;
2. Office of Academic Research, Shenyang Normal University, Shenyang 110034, China;
3. School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China;
4. Grain College of Shenyang Normal University, Shenyang 110034, China

Received Date: 2020-09-09
Available Online: 2022-01-18

Abstract

Abstract

In order to realize the rapid start-up and stable operation of the biofilm reactor, comparative studies were conducted on different methods of biofilm culturing in the process of MBBR of oil shale retorting wastewater treatment. The experiment was carried out by two methods of filming and domestication. Method 1 was to film the filler with simulated domestic sewage, and then domesticate the biofilm by using the oil shale retorting wastewater diluted 20 times by the simulated domestic sewage; Method 2 directly used oil shale retorting wastewater diluted 20 times with simulated domestic sewage for continuous flow film domestication. The results showed that:in the same operation stage, the growth of biofilm in method 2 was better than that in method 1, and the biomass of method 1 and method 2 were 941 mg/L and 1628 mg/L respectively, on the 35 th day. From the perspective of nitrogen and carbon removal, the start-up and stable operation time of method 2 was shorter, and the treatment efficiency was also better than that of method 1; the biofacies and SEM images showed that compared with method 2, the biofilm structure in method 2 was more compact, and the arrangement of microorganisms was more closely and the number of microorganisms was lager. So directly adopting the oil shale retorting wastewater diluted 20 times with simulated domestic sewage to carry out continuous flow film domestication was proved to be the best starting method.
- moving bed biofilm reactor (MBBR),
- oil shale retorting wastewater,
- simulated domestic sewage,
- biofilm culturing

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References(28)

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