Combined slaughterhouse wastewater treatment via pilot plant chemical coagulation followed by 4th generation downflow hanging sponge (DHS-4G)

Hellal, Mohamed; Doma, Hala S.

doi:10.1080/10934529.2022.2130634

Cited by 9 publications

(3 citation statements)

References 33 publications

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“…Due to the increasing effects of environmental pollution, there is a growing need for effective treatment methods for industrial wastewater. Particularly in the food production industry, cattle slaughterhouses are major sources of large amounts of wastewater containing organic pollutants and nutrient-rich components [ 1 ]. This diverse mixture of waste are derived from various processing and cleaning procedures, such as the accumulation of fat, blood, urine, feces, soil from skin, residual soft tissue fragments from trimming, and cleansing chemicals [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

High-performance internal circulation anaerobic granular sludge reactor for cattle slaughterhouse wastewater treatment and simultaneous biogas production

Hellal,

El-Kamah,

Doma

2024

BMC Biotechnol

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This research investigates the efficacy of a high-performance pilot-scale Internal Circulation Anaerobic Reactor inoculated with Granular Sludge (ICAGSR) for treating cattle slaughterhouse wastewater while concurrently generating biogas. The primary objective is to assess the efficiency and performance of ICAGSR in terms of organic pollutant removal and biogas production using granular anaerobic sludge. The research methodology entails operating the ICAGSR system under ambient conditions and systematically varying key parameters, including different Hydraulic Retention Times (HRTs) (24, 12, and 8 h) and Organic Loading Rates (OLRs) (3.3, 6.14, and 12.83 kg COD/m³. d). The study focuses on evaluating pollutants’ removal and biogas production rates. Results reveal that the ICAGSR system achieves exceptional removal efficiency for organic pollutants, with Chemical Oxygen Demand (COD) removal exceeding 74%, 67%, and 68% at HRTs of 24, 12, and 8 h, respectively. Furthermore, the system demonstrates stable and sustainable biogas production, maintaining average methane contents of 80%, 76%, and 72% throughout the experimental period. The successful operation of the ICAGSR system underscores its potential as a viable technology for treating cattle slaughterhouse wastewater and generating renewable biogas. In conclusion, this study contributes to wastewater treatment and renewable energy production by providing a comprehensive analysis of the ICAGSR system’s hydrodynamic properties. The research enhances our understanding of the system’s performance optimization under varying conditions, emphasizing the benefits of utilizing ICAGSR reactors with granular sludge as an effective and sustainable approach. Identifying current gaps, future research directions aim to further refine and broaden the application of ICAGSR technology in wastewater treatment and renewable energy initiatives.

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Section: Introductionmentioning

confidence: 99%

High-performance internal circulation anaerobic granular sludge reactor for cattle slaughterhouse wastewater treatment and simultaneous biogas production

Hellal,

El-Kamah,

Doma

2024

BMC Biotechnol

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“…The lack of clean water is a major global problem for many countries, especially developing and poor countries like Egypt, and for this reason, scientists search for more advanced technologies for the treatment of different kinds of water (Hassan et al, 2022; Hellal et al, 2020). Nowadays, the treatment of wastewater (municipal or even industrial) by activated sludge (AS) process has gained popularity in the infrastructures of the entire world; however, a lot of drawbacks could occur due to using this technology such as the growth of filamentous bacteria in the sludge suspension, high amount of sludge produced after treatment, high energy consumption and high capital cost (Hamedi et al, 2019; Hellal & Doma, 2022). These drawbacks of the AS technology push scientists to use a novel technology like membrane bioreactor (MBR).…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of submerged membrane bioreactor for municipal wastewater treatment: Experimental study and model validation with GPS‐X software simulator

Al‐Sayed

Hellal

Al–Shemy³

et al. 2023

Water & Environment J

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In this study, flat sheet submerged MBR (FS‐SMBR) was investigated under 6 and 4 h hydraulic retention times (HRT) and 40 days solid retention time with real municipal wastewater. The implementation of the treatment system was evaluated in terms of physico‐chemical and microbial analysis as well as sludge characterization. The permeate of FS‐SMBR complied with the standards for reuse and non‐detectable levels of faecal coliform was achieved at 6 and 4 h HRTs, with pore‐blocking resistances (Rt) of 28 × 1011 and 40 × 1011/m, respectively. Examining another dominant factor, that is, sludge viscosity, the best results were acquired using HRT 4 h for domestic wastewater. Furthermore, the results obtained were validated and calibrated using the GPS‐X software simulator, and the results of modelled data were completely matched with the experimental data under the same conditions.

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“…9 Physicochemical, biological, and advanced wastewater treatment processes are used for the treatment of SWW. 10 Biological treatment approaches (aerobic and anaerobic) for SWW have proven particularly difficult and generally infeasible, as these processes require a large area, the sensitivity of the microorganisms to chemical complexes, high operating costs, long residence times, and can leave floating oils in the rector. 11 Pretreatments such as coagulation/ floatation and filtrations are required before applying biological treatments.…”

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confidence: 99%

Treatment of Slaughterhouse Plant Wastewater by Sequential Chemical Coagulation-Continuous Flow Electrooxidation Process

Akhtar,

Gengec,

Kobya

2024

J. Electrochem. Soc.

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Wastewater from a small animal slaughterhouse (SWW) was treated by a two-step process: coagulation/flocculation (CF) followed by continuous flow electrooxidation (CFEO). Initially, a coagulant dose of 0.8 kg/m3 in the CF process, using FeCl3 at pH 8.5, achieved 52% COD and 63% turbidity removal (effluent: 2000 mg/L and 65.2 NTU). Alum, (optimum pH = 6.5), yielded 50% COD and 55% turbidity removal (effluent of 2100 mg/L and 78.5 NTU). Subsequently, when employing the CFEO process following the CF process with FeCl3, the study achieved highly efficient results. Specifically, under optimum conditions (residence time in the CFEO reactor, τ = 240 min, wastewater feed rate to the reactor = 15 mL/min, and current density = 300 A/m2), the COD and turbidity removal efficiencies reached 99.60% (resulting in an effluent of 8 mg/L) and 99.9% (resulting in an effluent of <0.10 NTU), respectively. In conclusion, the CF + CFEO consecutive treatment process demonstrated remarkable treatment efficiencies, with COD and turbidity removal rates of 99.9% and 99.9%, respectively. Moreover, the total operating cost of this treatment process was found to be 3.60 US $/m3.

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Combined slaughterhouse wastewater treatment via pilot plant chemical coagulation followed by 4th generation downflow hanging sponge (DHS-4G)

Cited by 9 publications

References 33 publications

High-performance internal circulation anaerobic granular sludge reactor for cattle slaughterhouse wastewater treatment and simultaneous biogas production

High-performance internal circulation anaerobic granular sludge reactor for cattle slaughterhouse wastewater treatment and simultaneous biogas production

Performance evaluation of submerged membrane bioreactor for municipal wastewater treatment: Experimental study and model validation with GPS‐X software simulator

Treatment of Slaughterhouse Plant Wastewater by Sequential Chemical Coagulation-Continuous Flow Electrooxidation Process

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