Hybrid Process Combining Electrocoagulation, Electroreduction, and Ozonation Processes for the Treatment of Grey Wastewater in Batch Mode

Daghrir, Rimeh; Gherrou, Abdelaziz; Noël, Isabelle M.; Seyhi, Brahima

doi:10.1061/(asce)ee.1943-7870.0001071

Cited by 30 publications

(13 citation statements)

References 69 publications

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“…This is also the case in a study conducted by Hajiali et al in their research obtained the results that ozone can reduce the turbidity rate which is quite good with an initial turbidity of 20 NTU successfully remove up to the number 9 NTU [11]. Then the research conducted by Daghrir et al [12] who conducted the study by comparing the waste treatment process between ozonation and electrocoagulation continued by ozonation in his study reported that ozonation can reduce the turbidity rate by about 16% this is still relatively low because by comparing to electrocoagulation followed by ozonation can reduce the turbidity rate by up to 97%. Likewise, what Hernandez-Ortega et al, reported in his study the combination of electrocoagulation and ozonation can reduce turbidity by up to 98% [13].…”

Section: Turbiditymentioning

confidence: 68%

The Efficiency of Reducing COD and Turbidity of Tofu Wastewater using A Combination of Electrocoagulation and Ozone

Oktiawan

Samadikun

Ashari

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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We present an investigation of tofu wastewater that contains organic substances that can cause rapid microbial growth in the water. It can lead to a decrease in oxygen levels. In addition, tofu wastewater also contains suspended substances that cause turbidity. This study aims to evaluate changes in pH, temperature, and efficiency of reducing turbidity & chemical oxygen demand (COD) of tofu wastewater using a combination of electrocoagulation and ozone. This research method was carried out on a laboratory scale using tofu wastewater. The ozone generator is used for ozonising tofu wastewater and an acrylic batch type electrochemical reactor. The electrode material used for the anode and cathode is made of aluminum and iron sheets. There were also differences in the highest turbidity removal of 78.3% at the 60 th min when the wastewater was treated using a combination of electrocoagulation followed by ozone. The highest COD removal of 51.9% resulted from the treatment of tofu wastewater using ozone for 60 min. The initial temperature was 27.6°C then increased by 28.1°C (1.8%). Combination of electrocoagulation followed by ozone was more effective in reducing pollutants in tofu wastewater.

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Section: Turbiditymentioning

confidence: 68%

The Efficiency of Reducing COD and Turbidity of Tofu Wastewater using A Combination of Electrocoagulation and Ozone

Oktiawan

Samadikun

Ashari

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…prescriptive approach) or approve systems that can meet the required WQ (i.e. performance-based approach), or a combination of both (Can et al, 2014;Farajzadehha et al, 2015;Daghrir et al, 2016). In Singapore for example (PUB, 2014), it is obligatory to utilize biological treatment combined with advanced filtration and disinfection for applications that pose potential risk to human health.…”

Section: Appropriate Gw Treatment Technologies For Sharjahmentioning

confidence: 99%

Assessment and reform of greywater reuse policies and practice: a case study from Sharjah, United Arab Emirates

et al. 2021

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This article presents an assessment of one of the earliest greywater reuse (GWR) experiences in Sharjah, United Arab Emirates (UAE). In 2003, the Sharjah Electricity and Water Authority (SEWA) imposed a compulsory GWR program on various categories of new buildings in the city. However, implementation of the program faced significant resistance and setbacks and remained limited to about 200 buildings, representing less than 2% water savings. In the analysis presented in this study, the need for GWR was assessed through analyzing SEWA's water supply and demand projections, conducting a 12-month water use survey of 285,000 Sharjah residents from about 140 nationalities, and identifying the areas in the city with intense water use. In addition, analysis and reforms of the various aspects of SEWA's GWR reuse policies and practice were presented and discussed. Reforming the policy to increase GWR to about 10% water savings can lead to significant reductions in desalinated water consumption and wastewater generation and consequently significant reductions in desalination cost (35 million USD/y), energy consumption (225,840 MWh/year) and CO2 emissions (120 ton/year). The case study presented in the article can serve as a reference to guide GWR policies and practice, especially for local authorities in developing countries.

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“…Because industrial wastewater contains bio-refractory organic compounds, their biological removal efficiency is low (Moisés et al, 2010). Therefore, integrated processes by coupling two or more biological, physical, and chemical processes such as electrochemical, ozone, membrane, and activated sludge have been intensively investigated to increase the efficiency of wastewater treatment in recent years (Daghrir et al, 2016;Dizge et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Treatment of vegetable oil wastewater by a conventional activated sludge process coupled with electrocoagulation process

Akarsu

Bilici

Dizge

2022

Water Environment Research

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The present work aims to study chemical oxygen demand (COD), oil-grease, and color removal from vegetable oil wastewater by combined electrocoagulation and activated sludge processes. For this purpose, the sample was pretreated using electrocoagulation by various optimization parameters such as electrode type (Al-Al and Fe-Fe), current density (100-400 A/m 2 ), pH (2-8), and electrolysis time (15-180 min). The results showed that 89.3% of COD, 100% of oil-grease, and 66.2% of color were removed by electrocoagulation under the conditions of 300-A/m 2 current density, pH 2, and 180-min reaction time with Al-Al electrode pairs. Then, the effluent of electrocoagulation was treated by an activated sludge process. The results depicted that the activated sludge process was also effective for vegetable oil wastewater treatment and it enhanced 98.9% COD and 79.2% color removal efficiency. The effluent of the combined process was very clear, and its quality exceeded the direct discharge standard of the water pollution control regulation. The laboratory-scale test results indicate that the combined electrocoagulation and activated sludge process is feasible for the treatment of vegetable oil wastewater. Practitioner points• Vegetable oil wastewater was treated by combination of electrocoagulation and activated sludge processes.• The combined electrocoagulation and activated sludge processes supplied 99.9% COD, 100% oil-grease, and 93.0% color removal efficiency.• The laboratory-scale test results indicate that the combined EC-SBR processes were feasible for the treatment of vegetable oil wastewater.

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Hybrid Process Combining Electrocoagulation, Electroreduction, and Ozonation Processes for the Treatment of Grey Wastewater in Batch Mode

Cited by 30 publications

References 69 publications

The Efficiency of Reducing COD and Turbidity of Tofu Wastewater using A Combination of Electrocoagulation and Ozone

The Efficiency of Reducing COD and Turbidity of Tofu Wastewater using A Combination of Electrocoagulation and Ozone

Assessment and reform of greywater reuse policies and practice: a case study from Sharjah, United Arab Emirates

Treatment of vegetable oil wastewater by a conventional activated sludge process coupled with electrocoagulation process

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