Modelling forward osmosis-nanofiltration integrated process for treatment and recirculation of leather industry wastewater

被引：23

作者：

Pal, Parimal ^{[1
]}

Sardar, Moumita ^{[1
]}

Pal, Madhubonti ^{[1
]}

Chakrabortty, Sankha ^{[2
]}

Nayak, Jayato ^{[3
]}

机构：

[1] Natl Inst Technol Durgapur, Dept Chem Engn, Environm & Membrane Technol Lab, Durgapur 713209, India

[2] Govt India, CSIR, Cent Mech Engn Res Inst, Durgapur 713209, India

[3] VSB Engn Coll, Dept Chem Engn, Karur 639111, Tamil Nadu, India

来源：

COMPUTERS & CHEMICAL ENGINEERING | 2019年 / 127卷

关键词：

Modelling FO-NF system; Closed loop treatment; Recycling used water; INTERNAL CONCENTRATION POLARIZATION; MEMBRANE; PERFORMANCE; DESALINATION; REMOVAL; PREDICTION; TRANSPORT; EFFLUENTS; FLUX;

D O I：

10.1016/j.compchemeng.2019.05.018

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Modelling of a forward osmosis-nanofiltration (FO-NF) integrated treatment system for treating hazardous wastewater has been done with model validation against experimental data of a semi-pilot unit using live wastewater from a leather industry. The flat sheet cross flow forward osmosis (FO) membrane module ensured near 100% rejection of chromium while total pollution load of the wastewater in terms of chemical oxygen demand (COD), chlorides and sulphates came down by 98%. A reasonably high water flux of about 48 L/m(2) h (LMH) could be sustained in the FO module. The coupled downstream NF system recovered the draw solute NaCl by more than 98% for recycling in the FO loop. That the developed model is capable of predicting system performance quite accurately is reflected in low relative error (<0.1), high overall correlation coefficient (R-2 > 0.98) and high Wilmot d-index (>0.95). The model will help assess operating conditions, system design and hence industrial scale up. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：99 / 110

页数：12