Removal of humic substances from reverse osmosis (RO) and nanofiltration (NF) concentrated leachate using continuously ozone generation-reaction treatment equipment

Wang, Huawei; Wang, Ya nan; Li, Xiaoyue; Sun, Yingjie; Wu, Hao; Chen, Dali

doi:10.1016/j.wasman.2016.07.040

Cited by 137 publications

(41 citation statements)

References 47 publications

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“…The band in the 1326 cm -1 range is associated with C-H deformation in the CH2 and CH3 groups, the asymmetric COO-stretch and the C-N stretch [4,25].…”

Section: Infrared Spectrummentioning

confidence: 99%

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Fulvic acids generated in municipal waste landfills in Promnik

Orliński

Anielak

2019

E3S Web Conf.

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Landfill leachates are resistant to biodegradation, contain substances harmful to the environment, which is why they are troublesome in the water and sewage management. The study tested the leachate from the municipal waste landfill in Promnik, whose age of waste disposal is 33 years. The research consisted of extracting from average leachates (with a volume of 800 m3) fulvic acids resistant to biodegradation. The extraction of acids was carried out using a hydrophobic and hydrophilic ionite in a hydrogen form. The extracted fulvic acids (FAs) was subjected to qualitative analysis on the content of micro-pollutants and the content of elementary elements forming the structure of the FAs molecule, their infrared and UV-VIS spectra were examined. Then, a full analysis of the obtained values was carried out in order to determine the properties of the obtained extractant and demonstrate the convergence of its features with humus substances that are common in the environment, which are an important element of soils, affect their quality and participate in the transport of plant nutrients. It was demonstrated that the concentration of FAs in the effluent is 905.6 mg/l.

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“…The band in the 1326 cm -1 range is associated with C-H deformation in the CH2 and CH3 groups, the asymmetric COO-stretch and the C-N stretch [4,25].…”

Section: Infrared Spectrummentioning

confidence: 99%

“…Landfilling of waste generates leachate containing many hazardous substances in high concentrations. The composition and properties of leachate depend on the age of the landfill, the type of waste, climatic conditions and the operating mode of the landfill [4]. A significant part of the waste deposited undergoes so-called humification.…”

Section: Introductionmentioning

confidence: 99%

Fulvic acids generated in municipal waste landfills in Promnik

Orliński

Anielak

2019

E3S Web Conf.

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“…Generally, wastewater is separated into two parts, namely, the almost pure water, which can be safely discharged to the environment, and the concentrated waste, which needs to be treated according to the pollutant [1]. Managing wastewater with high water content is costly, hence it can cause an economic issue due to high transportation costs for disposal and exorbitant costs of the wastewater treatment technology itself.…”

Section: Introductionmentioning

confidence: 99%

“…Water should be separated from the wastewater so that the amount of waste can be reduced. Generally, wastewater is separated into two parts, namely, the almost pure water, which can be safely discharged to the environment, and the concentrated waste, which needs to be treated according to the pollutant [1].…”

Section: Introductionmentioning

confidence: 99%

Progressive Freeze Concentration for Volume Reduction of Produced Water and Biodiesel Wastewater

et al. 2019

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One way to conserve fresh water resources is by reusing water from wastewater. For instance, water can be removed from wastewater through formation of ice crystal layers by progressive freeze concentration (PFC). The application of PFC to remove water from produced water and biodiesel wastewater was assessed through the final concentration of concentrated wastewater and purity of melted ice crystals. No PFC study has been done on these applications. In order to evaluate the efficiency of PFC, the effective partition constant (K) and separation efficiency (S E ) were calculated for the effect of stirring rate and coolant temperature. The results demonstrate that PFC is a more practical method for produced water, as compared to biodiesel wastewater which is based on the value of low K and high S E .

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“…However, application of AOPs is limited because of several drawbacks, such as the high cost of operation and low utilization of oxidant. [9][10][11] Coagulation allows for simple and convenient operation in water treatment, but the unsatisfactory production of organic sludge that must be treated adds to the cost. 2,4 Comparatively, adsorption is efficient and convenient.…”

Section: Introductionmentioning

confidence: 99%