《Table 3–Experimental procedures for the respirogram determination.》
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《Tuning of activated sludge in winter based on respirogram profiles under standard and site temperatures》
Respirogram space measurement，which includes several coordinates representing different activities（oxygen uptake rates，OUR）under different substrate conditions，has been described in previous research（Li et al.，2018b）.The respiration rates were measured offline using an automatic respirogram apparatus（WBM400，Xi'an Lvbiao Water Environmental Technology Co.，China）composed of a 1.2 L glass container，an aerator（compressor and fine bubble aerator stone），a DO probe（VisiFerm DO 120，Hamilton，Switzerland），a pH probe（Polilyte Plus Arc 120，Hamilton，Switzerland）and a programmable logic controller（PLC）.Online monitoring of pH and temperature variations in the built-in vessel of the apparatus was performed，meanwhile the pH was controlled at 7.5–8.5 by adding HCl or NaOH，and the temperature was maintained at the target values of site（T°C）and standard（20°C）temperatures using the same bath（BILON-W-503B Xi'an Bilon Experimental Equipment Co.，China）.The detailed experimental protocols for the respirogram determination are listed in Table 3.
| 图表编号 | XD0052063600 严禁用于非法目的 |
|---|---|
| 绘制时间 | 2019.05.15 |
| 作者 | Zhihua Li、Zhenyu Hang、Qian Zhang、Shuangshuang Zhang、Tianyu Zhang、Hanqing Yu |
| 绘制单位 | School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology、School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology、School of Environmental and Municipal Engineering, Xi' |
| 更多格式 | 高清、无水印（增值服务） |
