In this paper the relationship between flux (J) and transmembrane pressure (TMP) was investigated by the use of a pilot-scale plant (1.4 m~3 volume) fed with a real wastewater and equipped with a hollow-fibre membrane module (nominal pore size = 20 nm). The whole experimental period was divided into four different runs during which the flux (J) was kept constant to 25 LMH~1 and each run started after single chemical cleaning operations. The intrinsic membrane resistance (R_m) was found to be practically the same in the four runs, that is to say 0.750 kPa m~2 h/l. In the ripartition of resistances relative importance to the total, the resistance due to concentration polarization (R_g) accounts for 45-50% while the one due to the cake formation (R_f) for 35-39%. R_f was relatively unaffacted by operating parameters and was around twice the intrinsic membrane resistance R_m. However the resistance of the polarized layer R_g was larger than R_m (up to 3R_m) but comparable to the fouling resistance R_f: this may indicate that the fluidodinamic conditions applied are suitable to keep the R_g value low.
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机译：在本文中，通过使用具有真正废水的试验型植物（1.4m〜3体积）来研究助焊剂（j）和跨膜压力（Tmp）的关系，并配备空心纤维膜组件（标称孔径= 20nm）。整个实验期分为四个不同的运行，在此期间，通量（j）保持恒定至25lmh〜1，并且在单一化学清洁操作后每次开始。在四个运行中发现固体膜抗性（R_M）几乎是相同的，即表示0.750kPa m〜2 h / l。在的电阻相对重要性ripartition总，电阻由于浓差极化（R_g）占，而所述一个45-50％由于滤饼形成（R_F）为35-39％。 R_F通过操作参数相对不伴随，并且存在于内在膜抗性R_M的两倍。然而，偏振层R_G的电阻大于R_M（最多3R_M），但与污垢电阻R_F相当：这可能表明所施加的FlaseOdinamic条件适合保持R_G值低。
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