State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
Bioresour Technol. 2013 Aug;142:179-85. doi: 10.1016/j.biortech.2013.04.051. Epub 2013 Apr 22.
A combined process consisting of a powdered activated carbon technology (PACT) and short-cut biological nitrogen removal reactor (SBNR) was developed to enhance the removal efficiency of the total nitrogen (TN) from the effluent of an upflow anaerobic sludge bed (UASB) reactor, which was used to treat coal gasification wastewater (CGW). The SBNR performance was improved with the increasing of COD and TP removal efficiency via PACT. The average removal efficiencies of COD and TP in PACT were respectively 85.80% and 90.30%. Meanwhile, the NH3-N to NO2-N conversion rate was achieved 86.89% in SBNR and the total nitrogen (TN) removal efficiency was 75.54%. In contrast, the AOB in SBNR was significantly inhibited without PACT or with poor performance of PACT in advance, which rendered the removal of TN. Furthermore, PAC was demonstrated to remove some refractory compounds, which therefore improved the biodegradability of the coal gasification wastewater.
采用粉末活性炭技术（PACT）与短程生物脱氮反应器（SBNR）联合工艺，提高上流式厌氧污泥床（UASB）反应器处理煤气化废水（CGW）出水总氮（TN）的去除效率。随着 PACT 对 COD 和 TP 去除效率的提高，SBNR 的性能得到改善。PACT 中 COD 和 TP 的平均去除率分别为 85.80%和 90.30%。同时，SBNR 中 NH3-N 到 NO2-N 的转化率达到 86.89%，TN 的去除效率达到 75.54%。相比之下，在没有 PACT 或 PACT 性能不佳的情况下，SBNR 中的 AOB 受到明显抑制，导致 TN 的去除受到影响。此外，PAC 被证明可以去除一些难生物降解的化合物，从而提高了煤气化废水的可生化性。
