Article
Engineering, Multidisciplinary
Alaa H. Khalaf, W. A. Ibrahim, Mai Fayed, M. G. Eloffy
Summary: The study investigated the effect of operating conditions on two methods used for dairy wastewater treatment - conventional activated sludge and conventional sequencing batch reactor. The addition of plastic media was also studied, resulting in biofilm systems. Results showed that the optimum temperature for removal efficiency was 35 degrees C. The SBR method was determined to be the most effective treatment method for dairy wastewater based on the investigated conditions.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
Adarsh Singh, Ashish Srivastava, Duduku Saidulu, Ashok Kumar Gupta
Summary: Industrial wastewater treatment is crucial to meet discharge regulations. The sequencing batch reactor (SBR), known for its low cost and high efficiency, is widely used for treating industrial wastewater. This review explores the feasibility of SBR in treating wastewater from various industries and discusses factors affecting its treatment efficacy, as well as innovative modifications and combinations with other advanced technologies.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Multidisciplinary Sciences
Elisa Clagnan, Lorenzo Brusetti, Silvia Pioli, Simone Visigalli, Andrea Turolla, Mingsheng Jia, Martina Bargna, Elena Ficara, Giovanni Bergna, Roberto Canziani, Micol Bellucci
Summary: This study investigated the performance of a PN/A pilot-scale reactor treating textile wastewater, finding an increase in nitrogen removal efficiency despite challenges encountered. The PN/A process showed promising cost-effective potential for N treatment in textile wastewater.
Article
Biotechnology & Applied Microbiology
Ching-Lun Su, Sai Hung Lau, Hsiang-Yuan Yeh, Yi-Tang Chang
Summary: This study aims to investigate the removal of benzophenone-n (BPs) and the production and functions of extracellular polymeric substances (EPS) in a laboratory-scale SBR under different hydraulic retention time (HRT) and operating stages. The results showed that increasing the HRT from 8 to 48 hours significantly improved the removal of BPs, and the reaction stage (aerobic condition) was the most effective. The protein content of EPS increased with HRT, while polysaccharides showed no relationship. The dominant strains varied with different HRTs but were similar at different stages according to the next-generation sequencing (NGS) results.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2023)
Article
Agricultural Engineering
Peijun Li, Kai Li, Pan Xu, Xianchang Liu, Yuewu Pu
Summary: A low-cost and high-efficiency wastewater treatment system was established, with the evaluation of treatment efficiency and microbial community structure using 16S rRNA sequencing and gene expression quantification.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Mohini Verma, Shubhrasekhar Chakraborty, Shweta Kumari, Aalok Gupta, Dewanshu Kumar, Jawed Iqbal, J. Rajesh Banu, Arulazhagan Pugazhendi, R. Naresh Kumar
Summary: A laboratory-scale GAC-SBR was used to co-treat landfill leachate and municipal wastewater, and the treatment efficiency was evaluated. Increasing GAC concentration led to better removal of COD and ammonia from leachate. GAC-SBR demonstrated efficient removal of COD and nutrients at a 10-day HRT. Statistically significant differences were observed in the treatments for different leachate:wastewater ratios. Coupled treatment showed potential for co-treatment, but additional physico-chemical processes may be required for further pollutant removal.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Agricultural Engineering
Dong-Mei Zhang, Qing Teng, Dongqing Zhang, Ghulam Jilani, Wei-Ming Ken, Zhi-Peng Yang, Tajwar Alam, Muhammad Ikram, Zahid Iqbal
Summary: The study investigated the impacts of magnesium-ammonium-phosphate (MAP) precipitation on the performance and microbial dynamics in an anaerobic continuously stirred tank reactor (CSTR) coupled with sequencing batch reactor (SBR) for swine wastewater treatment. Results showed an overall higher removal efficiency for COD, NH4+ and PO43- with MAP precipitation. The increase in microbial community richness and diversity with MAP was conducive to nitrogen and phosphorus removal, as well as biogas production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
S. K. Rifi, L. E. Fels, A. Driouich, M. Hafidi, Z. Ettaloui, S. Souabi
Summary: The production of olive oil mill wastewater is a major environmental sustainability issue in the food sector. This study evaluates the treatment capacity of a sequential batch reactor (SBR) for diluted olive oil mill wastewater using domestic wastewater. The results show that the dilution improves biodegradability and reduces pollution. The suggested treatment process is simple and cost-effective, making it suitable for olive oil manufacturing industries.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
E. Yakamercan, A. Aygun
Summary: The study found that the optimal HRT and SRT for the removal of DEHP and PCP from real textile wastewater were 48 hours and 20 days, respectively, resulting in removal efficiencies of 83.27% for DEHP and 75.5% for PCP. Biodegradation and sorption onto sludge were identified as the main mechanisms for the removal of PCP and DEHP.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Studies
Ahmed Eteba, M. Bassyouni, Mamdouh Saleh
Summary: Complex dyes have a negative impact on the environment and are difficult to remove using traditional methods. A series of experiments was conducted to determine the optimal parameters for the removal of direct blue 78 dye using chemically treated coal fly ash (TCFA). A pilot plant was designed and implemented to investigate the ability of TCFA to remove pollutants from textile wastewater. Various physical and chemical analyses were conducted on the fly ash. The results showed that chemical treatment significantly improved the properties of the fly ash. Batch adsorption experiments demonstrated that TCFA was effective in removing dyes under optimal conditions.
ENERGY & ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Radhakrishnan Naresh Kumar, Somya Sadaf, Mohini Verma, Shubhrasekhar Chakraborty, Shweta Kumari, Veerababu Polisetti, Parashuram Kallem, Jawed Iqbal, Fawzi Banat
Summary: The use of novel flocculants in combination with a sequencing batch reactor (SBR) has proven effective in reducing polluted effluents from landfill leachate and municipal wastewater. Co-treatment of landfill leachate with municipal wastewater in SBR, followed by coagulation-flocculation, achieved significant removal of COD, ammonia, nitrate, phosphate, turbidity, and TSS. The combined treatment with the new flocculants successfully met international standards for discharges to inland surface water.
Article
Environmental Sciences
Afnan Ahmadi Zahuri, Muhamad Fazly Abdul Patah, Yusniza Kamarulzaman, Nor Hazlina Hashim, Thinaranjeney Thirumoorthi, Wan Hanna Melini Wan Mohtar, Zarimah Mohd Hanafiah, Zulhelmi Amir, Wan Abd Al Qadr Imad Wan-Mohtar
Summary: Textile effluent in Malaysia is a major source of industrial wastewater and poses environmental and health hazards. Dolomite, used as an adsorbent, can effectively remove color, chemical oxygen demand, and inhibit bacterial growth in textile dye wastewater.
Article
Engineering, Chemical
Marta Mendes, Irina S. Moreira, Patricia Moreira, Manuela Pintado, Paula M. L. Castro
Summary: A yeast-bioaugmented aerobic granular sludge (AGS) system was developed using a sequencing batch reactor (SBR) inoculated with activated sludge and a dye-decolorizing yeast strain-Yarrowia lipolytica (HOMOGST27AB). The AGS-SBR system effectively removed carbon and nitrogen from synthetic saline wastewater, without being affected by the reactive textile dye addition. Successful bioaugmentation with Y. lipolytica (HOMOGST27AB) was confirmed through sequencing analysis of granule samples throughout the reactor operation. The microbial profile of the AGS core microbiome showed a dynamic composition, with shifts in abundance of different bacterial phyla during different phases of the bioreactor operation.
Article
Environmental Sciences
Mojtaba Pourakbar, Ali Abdolahnejad, Saber Raeghi, Farhad Ghayourdoost, Roghayeh Yousefi, Ali Behnami
Summary: Virus detection in hospital wastewater is related to the number of hospitalized cases, with higher viral load in sewage from areas with poor socioeconomic conditions; Bioaerosols released from CAS systems in WWTPs may pose a threat to the working staff, while no viral RNA was detected in bioaerosols from SBR systems; The virus is more likely to accumulate in biosolids rather than being transported via liquid phase, but can be completely destroyed in anaerobic sludge treatment processes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Anna Kwarciak-Kozlowska, Malgorzata Worwag
Summary: The study investigated the effectiveness of ultrasonic disintegration of coke wastewater in a sequencing batch reactor, demonstrating that sonication increased biodegradability and reduced toxicity. The treatment efficiency was found to be significantly influenced by the volumetric ratio of coke wastewater in the mixture and could be improved by optimizing individual phases in the SBR and pollution load.
