采用半连续序批式生物反应器和微藻光生物反应器处理采出水。
Produced water treatment by semi-continuous sequential bioreactor and microalgae photobioreactor.
作者信息
Khairuddin Nur Farahah Mohd, Khan Nadeem, Sankaran Saravanan, Farooq Wasif, Ahmad Irshad, Aljundi Isam H
机构信息
Membranes and Water Security IRC, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia.
Bioengineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia.
出版信息
Bioresour Bioprocess. 2024 Jun 2;11(1):56. doi: 10.1186/s40643-024-00775-3.
Produced water (PW) from oil and gas exploration adversely affects aquatic life and living organisms, necessitating treatment before discharge to meet effluent permissible limits. This study first used activated sludge to pretreat PW in a sequential batch reactor (SBR). The pretreated PW then entered a 13 L photobioreactor (PBR) containing Scenedesmus obliquus microalgae culture. Initially, 10% of the PW mixed with 90% microalgae culture in the PBR. After the exponential growth of the microalgae, an additional 25% of PW was added to the PBR without extra nutrients. This study reported the growth performance of microalgae in the PBR as well as the reduction in effluent's total organic carbon (TOC), total dissolved solids (TDS), electrical conductivity (EC), and heavy metals content. The results demonstrated removal efficiencies of 64% for TOC, 49.8% for TDS, and 49.1% for EC. The results also showed reductions in barium, iron, and manganese in the effluent by 95, 76, and 52%, respectively.
石油和天然气勘探产生的采出水（PW）会对水生生物和生物体产生不利影响，因此在排放前必须进行处理以达到废水允许排放限值。本研究首先在序批式反应器（SBR）中使用活性污泥对采出水进行预处理。然后，经预处理的采出水进入一个装有斜生栅藻微藻培养物的13升光生物反应器（PBR）。最初，在光生物反应器中，10%的采出水与90%的微藻培养物混合。在微藻呈指数生长后，在不添加额外营养物质的情况下，向光生物反应器中再添加25%的采出水。本研究报告了微藻在光生物反应器中的生长性能以及出水中总有机碳（TOC）、总溶解固体（TDS）、电导率（EC）和重金属含量的降低情况。结果表明，TOC的去除效率为64%，TDS的去除效率为49.8%，EC的去除效率为49.1%。结果还显示，出水中的钡、铁和锰分别减少了95%、76%和52%。
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