Water Reuse

ABSTRACT Produced water has elevated levels of salts, metals, and organic constituents and is seen as a waste byproduct in the oil and gas industry. This comprehensive review summarizes (1) the potential impact, (2) produced water management, and (3) identifies current research thrust areas in future efforts. Complementary treatment systems involving chemical and biological techniques offer significant advantages. The review emphasizes the application of these technologies and their performance in meeting regulatory standards. Cost, energy consumption, chemical use, and operational complexity are recognized challenges in both the water treatment industry and the oil and gas industry. It highlights the need for further research and for the optimization of processes to enhance their efficiency. The integration of conventional methods with advanced treatment processes is also explored, with a vision toward developing hybrid systems for improved treatment efficiency. Overall, complementary systems show great promise for the treatment of produced water, but further advancements, sustainability considerations, and integration with other technologies are essential for their successful implementation in large-scale applications. Maintaining expertise and awareness of water treatment issues in the oil and gas industry can help reclamation identify new technologies and solutions to technical challenges that may benefit the oilfield water treatment industry.

Florence Nyieku

Felix Tetteh Kabutey

Sampson Kofi Kyei

Helen M. K. Essandoh

Frederick Ato Armah

Esi Awuah

Oilfields produced water and constructed wetlands technology: a comprehensive review

Josef Lahnsteiner

Valentina Lazarova

Olivier Lefebvre

Water reuse: overcoming the challenges of growth and climate change

ABSTRACT Waste-activated sludge (WAS) generation is increasing due to the increased generation of wastewater owing to industrialization and urbanization. The disposal of WAS is a significant environmental and financial concern that can be offset by stabilization and valorization via anaerobic digestion (AD). However, the biodegradation is limited due to microbial cells and extracellular polymeric substances (EPS). Physical, chemical, biological, and hybrid pretreatments and the addition of accelerant materials for enhancing direct interspecies electron transfer (DIET) are among the strategies to overcome the poor biodegradation of WAS. Alkaline pretreatment disintegrates the floc structure of WAS by increasing the osmotic pressure, while microwave irradiation has thermal and a-thermal effects and increases the availability of organics for biodegradation. Moreover, the combination of alkaline and thermal pretreatments has synergic effects on solubilization, biogas production, and dewaterability. The disintegration of WAS is recognized by alteration in volatile solid (VS) content, sCOD, BOD/sCOD, turbidity, nutrients solubilization, dewaterability, particle size, specific surface area, change functional group, alteration in microorganism community, microorganism abundance, color, moisture content, lag phase, and biogas production. Higher doses of pretreatment increase COD solubilization but not biodegradable COD. Maximum COD solubilization ranged from 2 to 37% in alkaline, 21 to 260% in the microwave (MW), and 28 to 624% in hybrid pretreatments.

Abdulaziz M. Almegbl

Ali Mohammad Rahmani

Muntjeer Ali

Faris Mohammad A. Munshi

Abbas Khursheed

Thermal chemical pretreatment of waste-activated sludge for enhanced solubilization and biogas production: a review

ABSTRACT Treated wastewater (TWW) use represents a strategic prospect for sustainable agricultural development in water-scarce countries. The objective of this study was to evaluate the feasibility of adopting an innovative nozzle and irrigation management support (SIM) to promote the cultivation of olive trees under TWW in Morocco. The study involved 4-year-old olive trees irrigated according to the water requirement estimated by both the SIM model and the FAO56 method. The results showed that neither agronomic and physiological parameters nor leaves were affected by irrigation with TWW. However, the soil reacted differently as its alkalinity but witnessed a decrease in the fresh water (FW) treatments. The soil solution electrical conductivity was generally higher for TWW than FW. The savings on water and fertilizer costs generated by the TWW and TWW + SIM treatments are 570€ and 585€/ha, respectively, and the adoption of the two innovations generates additional net benefits equal to 45,000€, while to the nozzle with TWW alone, additional net benefits were observed that is 42,000€. A minimum increase in return of only 0.6% is needed to cover investment costs over the 30-year life of the project and the investment could be profitable even with a decrease in return of 48%.

Imane Mansir

Yassine Naji

Alessandra Scardigno

G. Dragonetti

Mohamed El Otmani

Lhoussaine Bouchaou

Redouane Choukr-Allah

The use of innovative technologies to improve treated wastewater irrigation of olive trees in the Souss-Massa region, Morocco

ABSTRACT Human, animal, and plant health is universally paramount, yet the release of poorly treated wastewater into the environment poses a significant risk to all life forms. Hence the need to employ wastewater treatment technologies to curb these health risks. Due to the need to adopt sustainable wastewater treatment technologies, this study investigated the use of a non-aerated hybrid horizontal and vertical flow constructed wetland for the removal of heavy metals and microorganisms from greywater. This was done at six different hydraulic retention times. Results showed significant reductions (p &amp;lt; 0.05) in heavy metal (manganese, zinc, cadmium, magnesium, chromium, and iron) concentrations, with some showing compliance to Ghana's Environmental Protection Agency and the United Kingdom National Environment Regulation recommended discharge limits. Heavy metal concentrations in effluent samples ranged from as low as 0.00 ± 0.15–0.23 ± 0.06 mg/L. Furthermore, there were significant reductions in Escherichia coli and Salmonella typhi (p &amp;lt; 0.05), which also showed compliance to Ghana's Environmental Protection Agency effluent discharge standards. The effluents from the system at HRT 3 days showed high removal efficiency ranges of 82–90% of bacteria. It is recommended that hybrid constructed wetlands should be incorporated in the treatment of greywater.

Isaac Mbir Bryant

Daniel Akpah

Mary Aku Ogum

Emmanuella Ernestina Gyamfi

Nancy Baka

Treatment of greywater using a non-aerated combined horizontal and vertical flow constructed wetland

ABSTRACT Arsenic contamination resulted from the rapid development of various industries affecting the water resource quality worldwide. Because of the risk of arsenic exposure to both the environment and humans, specific arsenic wastewater treatment is required to meet the anticipated water quality standards. A better understanding of current technologies is crucial while addressing the limitations in order to develop more effective methods for arsenic removal. This work presents updates on adsorption by metal nanoparticles, electrocoagulation, photocatalysis, and membrane methods including nanofiltration, ultrafiltration, reverse osmosis, and microfiltration, their advantages and limitations as well as the future direction of the wastewater treatment industry. Recent strategies using combination technologies show promising potential and present windows of opportunity to be tested in real life and large scale. Further research on these technologies is still required to assess the full potential of these technologies for arsenic removal able to shift the paradigm towards sustainability of tomorrow.

Nur Hafizah Ab Hamid

Ahmad Ilyas Rushdan

Abu Hassan Nordin

Mohd Nor Faiz Norrrahim

Siti Nur Husna Muhamad

Muhamad Iqbal Hakim Mohd Tahir

Nur Sara Batrishia Rosli

Nurin Hudanie Mohd Pakrudin

Azreen Syafiqah Roslee

Muhammad Rizal Muhammad Asyraf

Victor Feizal Knight

A review: The state-of-the-art of arsenic removal in wastewater

ABSTRACT The new European Union regulation on the minimum requirements for the use of reclaimed water for irrigation entered into force in June 2023, thereby imposing concerns regarding the costs of this non-conventional resource for potential users in the context of increasing water scarcity in the Mediterranean region. This research offers a comprehensive cost assessment of reclaimed water production based on the financial information gathered from wastewater treatment plants located on the Mediterranean coast of Andalusia (Southern Spain). The results offer valuable information for policy-makers, water operators, and potential users to assess the economic viability of utilising reclaimed water as an alternative source to scarce conventional resources.

Alfonso Expósito

Antonia Maria Lorenzo Lopez

Julio Berbel

How much does reclaimed wastewater cost? A comprehensive analysis for irrigation uses in the European Mediterranean context

ABSTRACT Membrane fouling is a prominent issue that affects the stable and efficient operation of reverse osmosis (RO) in reused water treatment. In this study, a zero-discharge RO system was adopted to treat the ultrafiltration permeate from a steel plant with the combined multi-wavelength UV-LED/chlorine process, focusing on organic structure modification and membrane fouling control. The results showed that the UV-LED/chlorine process could not only efficiently remove the dissolved organic carbon and the total nitrogen of the RO influent but also alter the organic substances from large molecules to small ones. In addition, the longer wavelength of a 295 nm UV-LED/chlorine process exhibited a greater RO permeate flux of 158 LMH, as compared to the shorter wavelength of 255 nm with the flux of 152 LMH. Moreover, compared to the single-wavelength, the dual-wavelength UV-LED/chlorine process played a more significant role in RO filtration performance, which induced a looser and thinner foulant structure, resulting in an 8% larger permeate flux and recovery at 275 + 295 nm than at 295 nm. This study demonstrated that the combined UV-LED/chlorine process could effectively alleviate RO membrane fouling. Our findings can provide theoretical and technical support for the sustainable development of membrane-based reused water treatment in the steel industry.

Z. Liu

M. Y. Xu

H. Yin

C. W. Xie

Q. Liu

H. T. Liu

S. Y. Liang

J. K. Li

T. Y. Zhang

T. Li

H. Y. Hu

B. Xu

Application of the multi-wavelength UV-LED/chlorine process to improve reverse osmosis membrane performance for reused water treatment in the steel industry

ABSTRACT Environmental water sources are under increasing threat due to the addition of harmful chemicals not addressed by conventional water treatment processes. To work on this concern, the current study aimed to synthesize sono-assisted Fe-modified activated carbon-chitosan (FeAcC) composite and construct a laboratory-scale ozone-integrated fluidized bed reactor (FBR) to eliminate phenolphthalein (php). Following 120 min of incubation, the adsorbent demonstrated a 27.28 mg g−1 of php adsorption capacity at pH 4 with 0.5 g L−1 of adsorbent dosage. The adsorption efficacy and mechanism were defined using isotherm and kinetic models. The study investigated the impact of different factors including, initial concentration, reuse of FeAcC, recirculation flow rate, and hydraulic retention time (HRT), on the efficiency of php removal. The optimum removal efficiency was observed at approximately 95% after 20 min of operation at 1.5 L min−1 recirculation flow rate (batch FBR) and 70 min of HRT (continuous FBR) under 400 mg h−1 ozonation rate. Experimental parameters were optimized using response surface methodology (RSM) with central composite design (CCD) to improve php removal. The large-scale implementation of the findings in the future can be a step for adding new technology for clean water treatment processes for emerging toxic pollutants.

Gopal Italiya

Sangeetha Subramanian

Adsorptive and oxidative removal of phenolphthalein by sono-assisted synthesized FeAcC in advanced oxidation-integrated fluidized bed reactor

ABSTRACT Cadmium pollution in wastewater has long become a daunting issue due to the rapid development of industries and modern technologies. As the exposure to cadmium has a significant effect on human health, it is crucial to treat wastewater contaminated with cadmium. This review aims to discuss and compare different treatments for cadmium in wastewater such as precipitation, coagulation, flotation, membrane filtration, biosorption, and carbon-based nanosorbent. The advances in the development of the current treatments of cadmium in wastewater represent some of the most significant milestones in the treatment strategies with most treatments showing almost complete removal of cadmium wastewater and promising reusability. However, it still possesses certain limitations which are further elaborated in this review to give insights into the future development of better treatments. Finally, a future direction to address the issue of cadmium pollution was presented to pave the way for the development of more eco-friendly treatments.

Siti Muhamad Nur Husna

Gan Xin Li

Tan Lin Quan

Abdirashid Mohamed Abdullah

Nuh Farhan Tajul Azwa

A state-of-art review on the sustainable technologies for cadmium removal from wastewater

短名
Journal Impact	4.13
国际分区	WATER RESOURCES(Q1)
期刊索引	SCI Q1中科院 4 区

ISSN	2709-6092, 2709-6106
h-index	30
国内分区	环境科学与生态学(4区)环境科学与生态学工程环境(4区)环境科学与生态学水资源(4区)

涉及主题	waterwater reusedesalinationwater usewater treatment
出版信息	出版商: IWA Publishing，出版周期: ，期刊类型: journal，开源期刊: 开源
基本数据	创刊年份: 2021，原创研究文献占比: 100.00%，自引率:2.30%， Gold OA占比: 100.00%
期刊费用	$2750详情
平均审稿周期	网友分享经验：7 Weeks

Water Reuse

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