Biofilm Forming Bacteria during Thermal Water Reinjection
Biofilm Forming Bacteria during Thermal Water Reinjection
复制标题
热水回注过程中形成生物膜的细菌
DOI：
10.1155/2017/9231056
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发表时间：
2017
期刊：
影响因子：
1.7
通讯作者：
J. Szanyi
中科院分区：
文献类型：
--
作者：
Máté Osvald;G. Maróti;B. Pap;J. Szanyi
热耗尽热水的回注长期以来一直是匈牙利科学兴趣的中心，约有1000个运行的热威尔斯井。虽然回注的物理和化学方面在过去几年中已经得到了部分解答，但生物过程的影响仍然鲜为人知。我们在Hodmezalvasarhely地热系统的表面元素进行了调查，该地热系统是匈牙利最古老的地热系统之一。自1998年以来，大约三分之一的地热水被热循环末端的两口回注威尔斯井回注。在操作期间，由于生物过程，在几天的时间内经历了表面系统的堵塞。我们的研究目的是找到微生物植物群的优势种，并提出建议，以避免进一步的细菌问题。我们发现，回注，因此产生，水的化学需氧量，酚指数，和苯系物组成基本上决定了表面上出现的植物群。当热水中这些化合物的浓度很大并且在缓冲罐中的停留时间足够长时，某些细菌可能比其他细菌更占优势，因此能够形成比预期更堵塞表面设备的生物膜。
Reinjection of heat-depleted thermal water has long been in the center of scientific interest in Hungary regarding around 1000 operating thermal wells. While the physical and chemical aspects of reinjection have partly been answered in the past years, the effects of biological processes are still less known. We carried out our investigations in the surface elements of the Hodmezővasarhely geothermal system which is one of the oldest operating geothermal systems in Hungary. About one-third of the used geothermal water has been reinjected since 1998 by two reinjection wells at the end of the thermal loops. During the operation, plugging of the surface system was experienced within a few-day-long period, due to biological processes. The goal of our research was to find the dominant species of the microbial flora and to make a proposal to avoid further bacterial problems. We found that the reinjected, therefore the produced, water’s chemical oxygen demand, phenol index, and BTEX composition basically determine the appearing flora on the surface. When the concentration of these compounds in the thermal water is significant and residence time is long enough in the buffer tank, certain bacteria can be much more dominant than others, thus able to form a biofilm which plugs the surface equipment much more than it is expected.
影响因子：
2.3
作者：
C. Moisescu;S. Bonneville;Sarah S. Staniland;I. Ardelean;L. Benning
通讯作者：
C. Moisescu;S. Bonneville;Sarah S. Staniland;I. Ardelean;L. Benning