Textile Wastewater Treatment for Water Reuse: A Case Study

Yin, Hua; Qiu, Peiwen; Qian, Yuange; Kong, Zhuwen; Zheng, Xiaolong; Tang, Zhihua; Guo, Hai‐Yang

doi:10.3390/pr7010034

Cited by 88 publications

(37 citation statements)

References 41 publications

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“…With the increasing population in the world, there is also an increasing demand for the quantity and quality of clean water and many techniques are explored to deal with this issue [1][2][3][4][5]. Membrane technology has provided a great solution for water treatment [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Filtration Performances of Different Polysaccharides in Microfiltration Process

et al. 2019

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Membrane technology has been widely applied for water treatment, while membrane fouling still remains a big challenge. The polysaccharides in extracellular polymeric substances (EPS) have been known as a significant type of foulant due to their high fouling propensity. However, polysaccharides have many varieties which definitely behave differently in membrane filtration. Therefore, in this study, different polysaccharides alginate sodium and xanthan gum were chosen to study their effects on membrane fouling in a wide concentration range. The results demonstrated that the filtration behaviors of alginate sodium and xanthan gum were completely different, which was due to their different molecular structures. Alginate had a small molecular weight and it was easy for alginate to penetrate membrane pores resulting in pore blocking. A series of concentrations of alginate including 5 mg/L, 10 mg/L, 20 mg/L, 30 mg/L, 40 mg/L, and 50 mg/L were examined and it was found that the permeate flux decline highly depended on the level of alginate in the feed water. While for the filtration of xanthan gum, the same concentration of xanthan gum led to more serious fouling than that observed in alginate, which might be due to its large molecule. In addition, calcium chloride was added in the solutions of both alginate and xanthan gum to examine the influence of a divalent cation on polysaccharide fouling. A “unimodal” peak can be observed in the fouling propensity caused by Ca2+ and alginate with increasing the concentration of alginate. Such a phenomenon was not found in the fouling of xanthan gum and Ca2+ led to more serious fouling for all concentrations of xanthan gum. In light of this, this study gave new insights into the fouling propensities of different polysaccharides.

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Section: Introductionmentioning

confidence: 99%

Filtration Performances of Different Polysaccharides in Microfiltration Process

et al. 2019

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“…Step 2, only Austrian fiber manufacturing uses the environmentally friendly manufacturing technology, which provides much lower amounts of non-renewable energy use (NREU) than the normal technology in the other locations. We also consider cost and CO 2 e from electricity used in wastewater treatment that are calculated based on the study of Yin et al [53]. Distance and delivery time between locations for assigned transportation mode are obtained from Searates.com, a logistics provider's website.…”

Section: Based Onmentioning

confidence: 99%

A Strategic Location Decision-Making Approach for Multi-Tier Supply Chain Sustainability

2020

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Few studies on supply location decisions focus on enhancing triple bottom line (TBL) sustainability in supply chains; they rarely employ objective quantifiable measurements which help ensure consistent and transparent decisions or reveal relationships between business and environmental trade-off criteria. Therefore, we propose a decision-making approach for objectively selecting multi-tier supply locations based on cost and carbon dioxide equivalents (CO2e) from manufacturing, logistics, and sustainability-assurance activities, including certificate implementation, sample-checking, living wage and social security payments, and factory visits. Existing studies and practices, logic models, activity-based costing, and feedback from an application and experts help develop the approach. The approach helps users in location decisions and long-term supply chain planning by revealing relationships among factors, TBL sustainability, and potential risks. This approach also helps users evaluate whether supplier prices are too low to create environmental and social compliance. Its application demonstrates potential and flexibility in revealing both lowest- and optimized-cost and CO2e supply chains, under various contexts and constraints, for different markets. Very low cost/CO2e supply chains have proximity between supply chain stages and clean manufacturing energy. Considering sustainability-assurance activities differentiates our approach from existing studies, as the activities significantly impact supply chain cost and CO2e in low manufacturing unit scenarios.

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“…In this test, prismatic mortar beams (40 × 40 × 160 mm 3 ) prepared with tap, sea, or RO reject water were exposed to deionized water acidified to pH 4 with nitric acid at the liquid/mortar beam volume (L/V) ratio of 8. Containers were sealed, allowed to stand still at room temperature, and acidified water was replaced at 6 h, 24 h, 5 d, 16…”

Section: Efflorescence and Leaching Of Saltsmentioning

confidence: 99%

“…Reverse osmosis (RO) is a widely used high-pressure (� 10-90 bar) membrane process for the desalination of sea water, brackish water, and different kinds of wastewaters [12][13][14][15][16]. The estimated number of operational desalination plants worldwide was 18,000 in 2015 with a total capacity of more than 88 million m 3 /d [17].…”

Section: Introductionmentioning

confidence: 99%

Sustainable batching water options for one-part alkali-activated slag mortar: Sea water and reverse osmosis reject water

et al. 2020

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Concrete production is globally a major water consumer, and in general, drinking-quality water is mixed in the binder. In the present study, simulated sea water and reverse osmosis reject water were used as batching water for one-part (dry-mix) alkali-activated blast furnace slag mortar. Alkali-activated materials are low-CO2 alternative binders gaining world-wide acceptance in construction. However, their production requires approximately similar amount of water as regular Portland cement concrete. The results of the present study revealed that the use of saline water did not hinder strength development, increased setting time, and did not affect workability. The salts incorporated in the binder decreased the total porosity of mortar, but they did not form separate phases detectable with X-ray diffraction or scanning electron microscopy. Leaching tests for monolithic materials revealed only minimal leaching. Furthermore, results for crushed mortars (by a standard two-stage leaching test) were within the limits of non-hazardous waste. Thus, the results indicated that high-salinity waters can be used safely in one-part alkali-activated slag to prepare high-strength mortars. Moreover, alkali-activation technology could be used as a novel stabilization/solidification method for reverse osmosis reject waters, which frequently pose disposal problems.

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Textile Wastewater Treatment for Water Reuse: A Case Study

Cited by 88 publications

References 41 publications

Filtration Performances of Different Polysaccharides in Microfiltration Process

Filtration Performances of Different Polysaccharides in Microfiltration Process

A Strategic Location Decision-Making Approach for Multi-Tier Supply Chain Sustainability

Sustainable batching water options for one-part alkali-activated slag mortar: Sea water and reverse osmosis reject water

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