Influence of nanofiltration concentrate recirculation on performance and economic feasibility of a pilot-scale membrane bioreactor-nanofiltration hybrid process for textile wastewater treatment with high water recovery

2020 ◽  
Vol 261 ◽  
pp. 121067 ◽  
Author(s):  
Kun Li ◽  
Qiang Liu ◽  
Fan Fang ◽  
Xiongwei Wu ◽  
Jiaqi Xin ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Textile Wastewater ◽  
High Water ◽  
Pilot Scale ◽  
Economic Feasibility ◽  
Hybrid Process ◽  
Water Recovery ◽  
Nanofiltration Concentrate ◽  
Textile Wastewater Treatment

Application of a combined process of moving-bed biofilm reactor (MBBR) and chemical coagulation for dyeing wastewater treatment

2006 ◽  
Vol 54 (9) ◽  
pp. 181-189 ◽  
Author(s):  
D.H. Shin ◽  
W.S. Shin ◽  
Y.-H. Kim ◽  
Myung Ho Han ◽  
S.J. Choi
Keyword(s):  
Wastewater Treatment ◽  
Textile Wastewater ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Dyeing Wastewater ◽  
Moving Bed Biofilm Reactor ◽  
Combined Process ◽  
Chemical Coagulation ◽  
Moving Bed ◽  
Textile Wastewater Treatment

A combined process consisted of a Moving-Bed Biofilm Reactor (MBBR) and chemical coagulation was investigated for textile wastewater treatment. The pilot scale MBBR system is composed of three MBBRs (anaerobic, aerobic-1 and aerobic-2 in series), each reactor was filled with 20% (v/v) of polyurethane-activated carbon (PU-AC) carrier for biological treatment followed by chemical coagulation with FeCl2.In the MBBR process, 85% of COD and 70% of color (influent COD=807.5 mg/L and color=3,400 PtCo unit) were removed using relatively low MLSS concentration and short hydraulic retention time (HRT=44 hr). The biologically treated dyeing wastewater was subjected to chemical coagulation. After coagulation with FeCl2, 95% of COD and 97% of color were removed overall. The combined process of MBBR and chemical coagulation has promising potential for dyeing wastewater treatment.

Water recovery from textile wastewater treatment by encapsulated cells of Phanerochaete chrysosporium and ultrafiltration system

Biologia ◽  
2020 ◽  
Vol 75 (10) ◽  
pp. 1717-1729
Author(s):  
R. E. Sierra-Solache ◽  
C. Muro ◽  
A. Maciel ◽  
J. Illescas ◽  
M. C. Díaz ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Phanerochaete Chrysosporium ◽  
Textile Wastewater ◽  
Water Recovery ◽  
Encapsulated Cells ◽  
Textile Wastewater Treatment

scholarly journals Efficiency and economic feasibility of forward osmosis in textile wastewater treatment

2019 ◽  
Vol 210 ◽  
pp. 1483-1495 ◽  
Author(s):  
Jasmina Korenak ◽  
Claus Hélix-Nielsen ◽  
Hermina Bukšek ◽  
Irena Petrinić
Keyword(s):  
Wastewater Treatment ◽  
Forward Osmosis ◽  
Textile Wastewater ◽  
Economic Feasibility ◽  
Textile Wastewater Treatment

scholarly journals Bioaugmented membrane bioreactor (MBR) with a GAC-packed zone for high rate textile wastewater treatment

2011 ◽  
Vol 45 (6) ◽  
pp. 2199-2206 ◽  
Author(s):  
Faisal Ibney Hai ◽  
Kazuo Yamamoto ◽  
Fumiyuki Nakajima ◽  
Kensuke Fukushi
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Textile Wastewater ◽  
High Rate ◽  
Textile Wastewater Treatment

scholarly journals The color removal and fate of organic pollutants in a pilot-scale MBR-NF combined process treating textile wastewater with high water recovery

2015 ◽  
Vol 73 (6) ◽  
pp. 1426-1433 ◽  
Author(s):  
Kun Li ◽  
Chao Jiang ◽  
Jianxing Wang ◽  
Yuansong Wei
Keyword(s):  
Membrane Fouling ◽  
Oxygen Demand ◽  
Textile Wastewater ◽  
High Water ◽  
Pilot Scale ◽  
Water Yield ◽  
Water Recovery ◽  
Treatment Efficiency ◽  
Textile Mill ◽  
Refractory Compounds

A combination of membrane bioreactor (MBR) and nanofiltration (NF) was tested at pilot-scale treating textile wastewater from the wastewater treatment station of a textile mill in Wuqing District of Tianjin (China). The MBR-NF process showed a much better treatment efficiency on the removal of the chemical oxygen demand, total organic carbon, color and turbidity in comparison with the conventional processes. The water recovery rate was enhanced to over 90% through the recycling of NF concentrate to the MBR, while the MBR-NF showed a stable permeate water quality that met with standards and could be directly discharged or further reused. The recycled NF concentrate caused an accumulation of refractory compounds in the MBR, which significantly influenced the treatment efficiency of the MBR. However, the sludge characteristics showed that the activated sludge activity was not obviously inhibited. The results of fluorescence spectra and molecular weight distribution indicated that those recalcitrant pollutants were mostly protein-like substances and a small amount of humic acid-like substances (650–6,000 Da), which contributed to membrane fouling of NF. Although the penetrated protein-like substances caused the residual color in NF permeate, the MBR-NF process was suitable for the advanced treatment and reclamation of textile wastewater under high water yield.

scholarly journals Pilot-Scale Study of Real Domestic Textile Wastewater Treatment Using Cassia fistula Seed-Derived Coagulant

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Minh-Trung Dao ◽  
Vo-Chau-Ngan Nguyen ◽  
Thanh-Nha Tran ◽  
Xuan-Du Nguyen ◽  
Duc-Thuong Vo ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Textile Wastewater ◽  
Pilot Scale ◽  
Cassia Fistula ◽  
Bench Scale ◽  
Carboxylate Groups ◽  
Coagulant Dosage ◽  
Initial Ph ◽  
Seed Gum ◽  
Textile Wastewater Treatment

Plant-derived coagulants have exhibited a good potential in wastewater treatment due to their “green” characteristics, high coagulating-flocculating activity, cost-effectiveness, and biodegradability. Nevertheless, research studies have focused mainly on bench-scale experiments; pilot-scale and full-scale simulations are still limited. Herein, we firstly report a pilot-scale study of real domestic textile wastewater treatment using Cassia fistula coagulant. The material characterizations using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), and dynamic light scattering (DLS) revealed that the natural gum extracted from C. fistula seed possessed a rough and irregular surface containing a high molecular weight galactomannan. The bench-scale investigation was initially conducted to determine the optimal pollutant concentration, initial pH, and coagulant dosage in the coagulation-flocculation process. The pilot-scale study revealed that C. fistula coagulant is an effective material for real textile wastewater treatment, showing percentage removal of 93.83% at a volume of 30 L and a coagulant dosage of 1.17 mg·L−1. Coagulation-flocculation using C. fistula seed gum could be an efficient primary wastewater treatment prior to membrane or biological methods to meet Vietnamese environmental standards. The main mechanisms of textile wastewater treatment involve adsorption/bridging interactions via hydrogen bonding and electrostatic attraction between negatively charged carboxylate groups of the coagulant and positively charged pollutants.

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