Jin Ningben
Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd Shanghai 200232 China
RSC Adv. 2018 Mar 2;8(17):9175-9180. doi: 10.1039/c8ra00793d. eCollection 2018 Feb 28.
The influence of phosphate buffer on the stabilization of sewage sludge was investigated in autothermal thermophilic aerobic digestion (ATAD). A concentration series of 0.005, 0.01, 0.02 and 0.03 mol phosphate buffer for each liter of sludge was adopted. The phosphate buffer significantly enhanced the performance of the ATAD for sewage sludge. The highest VS removal was achieved by the group with 0.01 mol L phosphate buffer, and the stabilization time of the sludge was shortened by 9 days compared with that of the control. The group with the optimal dosage obtained the deepest stabilization level of sludge, which was reflected by the distribution of the particle size, and achieved 6.08% VS removal higher than that of the control in the end. Lower concentrations of carbon, nitrogen and phosphate in the supernatant were also achieved by proper dosing compared with those of the control.
研究了磷酸盐缓冲液在自热嗜热好氧消化（ATAD）中对污水污泥稳定化的影响。采用每升污泥中0.005、0.01、0.02和0.03摩尔磷酸盐缓冲液的浓度系列。磷酸盐缓冲液显著提高了ATAD处理污水污泥的性能。含0.01 mol/L磷酸盐缓冲液的组实现了最高的挥发性固体（VS）去除率，与对照组相比，污泥的稳定化时间缩短了9天。最佳剂量组的污泥稳定化程度最深，这通过粒度分布得以体现，最终实现的VS去除率比对照组高6.08%。与对照组相比，适当投加磷酸盐缓冲液还使上清液中的碳、氮和磷浓度降低。
