التفاصيل البيبلوغرافية
| العنوان: |
分段递进式除硫工艺对油井采出含硫废水的处理研究. (Chinese) |
| Alternate Title: |
Research on the treatment of sulfide-containing wastewater from oil well production using segmented progressive sulfide removal process. (English) |
| المؤلفون: |
刘怀珠, 于慧艳, 胡彬彬, 赵 亮, 赵康宁, 朱广斌, 吴新世 |
| المصدر: |
Industrial Water Treatment; Jul2024, Vol. 44 Issue 7, p171-178, 8p |
| Abstract (English): |
In response to the challenge of sulfide removal from oilwell produced wastewater, a segmented progressive sulfide removal process was adopted to treat the oilwell produced wastewater through UASB bioreactor and biomimetic reactor for segmented progressive reflux treatment. The experimental results showed that under the conditions of adopting the segmented progressive sulfide removal process, adjusting the S/N ratio of 5.2∶ 2 in the produced wastewater, supplementing a certain amount of HCO3-, and setting the reflux ratio of 2.7∶1, the removal efficiency of sulfide (S2− ) in the produced wastewater arrived to 95.8%, and the maximum sulfide volumetric load was 6.46 kg/(m³ ·d). The removal efficiency of nitrate (NO3 - -N) reached 99.6%, with the maximum nitrate volumetric load of 1.13 kg/(m³ ·d). The key metabolite of sulfide metabolism was elemental sulfur, with a recovery rate of 83.8%, which was verified by SEM and XRD simultaneously, and followed by SO42- and S2O32- . While the key metabolite of nitrate metabolism was N2, with a yield of 72.4%, and followed by NO2 - . The new process not only solved the problem of efficient removal of sulfide and nitrate from the produced wastewater, but also realized resource recovery(S0) and non-pollution emission of metabolic end products (such as N2). [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
针对油井采出废水中硫化物去除难的问题，采用分段递进式除硫工艺对油井采出废水经过 UASB 生物反 应池和仿生池进行分段递进式回流处理。实验结果表明，采用分段递进式除硫工艺，调节采出废水中 S/N 为 5.2∶2，补 充一定量的 HCO3 - ，设置回流比为 2.7∶1条件下，采出废水中的硫化物（S2− ）去除率为 95.8%，最大容积载荷 6.46 kg/（m³ ·d）； 硝酸盐（NO3 - -N）去除率达 99.6%，最大容积载荷 1.13 kg/（m3 ·d）。经 SEM 和 XRD 验证，硫代谢产物以单质硫（S0 ）为主， 回收率 83.8%，其次为 SO4 2- 和 S2O3 2- ；硝酸盐代谢产物以 N²为主，产率 72.4%，其次为 NO2 - 。分段递进式除硫工艺不仅 解决了采出废水中的硫化物去除难题，同时实现了资源回收（S0 ）和主要代谢终产物（如 N2 ）的无污染排放。 [ABSTRACT FROM AUTHOR] |
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