Research Progress on Zero Discharge and Resource Utilization of Industrial High‐Salt Wastewater

Liú, Dan; Liu, Qiongqiong

doi:10.1002/clen.202000410

Cited by 14 publications

(4 citation statements)

References 49 publications

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“…Thus, SO2 Industrial waters usually contain a large amount of difficult-to-treat wastewater high in salt with compact components which cause great damage to the environment [66]. The chloride ion (Cl -) in the industrial wastewaters, though essential for biological function of aquatic organisms, can, in large concentrations, disrupt ion balance in those organisms and can alter the physical structure of soil when exposed to sodium ions (Na + ) [67].…”

Section: Hydrogen Peroxide (Used Only In Dechroming Methods 1 and 3)mentioning

confidence: 99%

Development of an Eco-friendly and Sustainable Method of Dechroming Leather Wastes

Mwondu

Ombui

Kironchi

et al. 2021

TLR

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Huge quantities of chromium-containing leather solid wastes are generated during the production of chrome-tanned leather worldwide. Disposal of these huge quantities of leather solid wastes is a major challenge due to the presence of chromium, which is highly toxic (mainly in its hexavalent form) and detrimental to the environment. Sustainable and environmentally friendly methods of their disposal and treatment options for removing chromium are required so that the dechromed waste can be utilized to make useful products, such as fertilizer for soil conditioning, to improve agriculture, or other applications. In this study, therefore, a new method of dechroming leather solid wastes was designed, whose procedure and results were compared with three other commonly used methods. The focus of the various dechroming methods was on the evaluation of the degree of chromium extraction from chrome-tanned leather wastes without destroying the collagen tissues. The average total amount of extractable chromium content (Cr2O3) in the dried leather waste samples was found to be 3.67%. The new method was found to be relatively more efficient, environmentally sound and less cumbersome than all the other methods investigated in this work. At P-Value of < 0.05, concentrations of chromium extracted and %TKN in residual collagen hydrolysate reached up to 99.89% and 52.89%, respectively. The levels of total ash and total organic carbon were also relatively high in the resultant collagen hydrolysate (i.e. 12.42% and 23.27%, respectively). The t distribution test on the results of the various dechroming methods confirmed that there was a significant difference at 95% confidence interval, since t (calculated) was greater than t (tabulated). It was concluded that nearly all the chromium in chrome-tanned leather wastes can be removed with a simple technology, which is sustainable and environmentally sound.

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Section: Hydrogen Peroxide (Used Only In Dechroming Methods 1 and 3)mentioning

confidence: 99%

Development of an Eco-friendly and Sustainable Method of Dechroming Leather Wastes

Mwondu

Ombui

Kironchi

et al. 2021

TLR

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“…The existing water treatment methods can be roughly divided into physical, chemical, and biological methods. The physical methods [8] mainly include multi-effect flash evaporation technology, multi-stage flash evaporation technology, and mechanical vapor recompression evaporation, which are energy-intensive and cost-intensive. The chemical methods [9] mainly include incineration, ion exchange, and electrodialysis, which offer high salt-removal efficiencies, but are expensive and often produce harmful by-products.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review on Forward Osmosis Water Treatment: Recent Advances and Prospects of Membranes and Draw Solutes

Zhu

Chen

et al. 2022

IJERPH

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Forward osmosis (FO) is an evolving membrane separation technology for water treatment and reclamation. However, FO water treatment technology is limited by factors such as concentration polarization, membrane fouling, and reverse solute flux. Therefore, it is of a great importance to prepare an efficient high-density porous membrane and to select an appropriate draw solute to reduce concentration polarization, membrane fouling, and reverse solute flux. This review aims to present a thorough evaluation of the advancement of different draw solutes and membranes with their effects on FO performance. NaCl is still widely used in a large number of studies, and several general draw solutes, such as organic-based and inorganic-based, are selected based on their osmotic pressure and water solubility. The selection criteria for reusable solutes, such as heat-recovered gaseous draw, magnetic field-recovered MNPs, and electrically or thermally-responsive hydrogel are primarily based on their industrial efficiency and energy requirements. CA membranes are resistant to chlorine degradation and are hydrophilic, while TFC/TFN exhibit a high inhibition of bio-adhesion and hydrolysis. AQPs are emerging membranes, due to proteins with complete retention capacity. Moreover, the development of the hybrid system combining FO with other energy or water treatment technologies is crucial to the sustainability of FO.

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“…Therefore, the harmless and resource-based treatment of high-salt wastewater will become an inevitable trend of water environmental protection. Zero discharge of high-salt wastewater is the subsequent treatment of the wastewater mentioned above through pretreatment, evaporation, crystallization, and other processes so that the recovery rate is higher than 95% [ 5 ]. At the same time, crystalline salt is treated in a harmless and resourceful way.…”

Section: Introductionmentioning

confidence: 99%

“…Most high-salt wastewater contains Cl − , SO 4 2− , Na + , Ca 2+ , K + , etc. [5]. In the 1970s, developed countries began enforcing legislation prohibiting high-salinity wastewater discharges into water systems, and factories implemented zero-discharge policies [6].…”

Section: Introductionmentioning

confidence: 99%

Multi-Agent Evolutionary Game in the Recycling Utilization of Sulfate-Rich Wastewater

Ding

Zeng

2022

IJERPH

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Current industrial development has led to an increase in sulfate-rich industrial sewage, threatening industrial ecology and the environment. Incorrectly treating high-concentration sulfate wastewater can cause serious environmental problems and even harm human health. Water with high sulfate levels can be treated as a resource and treated harmlessly to meet the needs of the circular economy. Today, governments worldwide are working hard to encourage the safe disposal and reuse of industrial salt-rich wastewater by recycling sulfate-rich wastewater (SRW) resources. However, the conflict of interests between the SRW production department, the SRW recycling department, and the governments often make it challenging to effectively manage sulfate-rich wastewater resources. This study aims to use the mechanism of evolutionary game theory (EGT) to conduct theoretical modelling and simulation analysis on the interaction of the behaviour of the above three participants. This paper focuses on the impact of government intervention and the ecological behaviour of wastewater producers on the behavioural decisions of recyclers. The results suggest that the government should play a leading role in developing the SRW resource recovery industry. SRW producers protect the environment in the mature stage, and recyclers actively collect and recover compliant sulfate wastewater resources. Governments should gradually deregulate and eventually withdraw from the market. Qualified recyclers and environmentally friendly wastewater producers can benefit from a mature SRW resources recovery industry.

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Research Progress on Zero Discharge and Resource Utilization of Industrial High‐Salt Wastewater

Cited by 14 publications

References 49 publications

Development of an Eco-friendly and Sustainable Method of Dechroming Leather Wastes

Development of an Eco-friendly and Sustainable Method of Dechroming Leather Wastes

A Comprehensive Review on Forward Osmosis Water Treatment: Recent Advances and Prospects of Membranes and Draw Solutes

Multi-Agent Evolutionary Game in the Recycling Utilization of Sulfate-Rich Wastewater

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