Removing Organic Matter and Nutrients from Swine Wastewater after Anaerobic–Aerobic Treatment

Terán, Rubén Alfonso Saucedo; Orozco, Celia de la Mora; Acuña, Irma Julieta González; Rosales, Sergio Gómez; Araujo, Gerardo Domínguez; Arias, Héctor Osbaldo Rubio

doi:10.3390/w9100726

Cited by 6 publications

(1 citation statement)

References 27 publications

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“…However, the efficacy of CANDO in wastewater treatment is influenced by several factors, with nitrite concentration in the anoxic reaction stage considered a crucial factor affecting the production of N 2 O [52]. Despite the potential of anaerobic-aerobic coupling technology to enhance the production of energy substances such as CH 4 and N 2 O, substantial amounts of nutrients persist in swine wastewater [53]. Consequently, exploring ways to further improve the resource utilization efficiency of anaerobic-aerobic coupling technology via deliberate optimization represents a valuable direction for future research.…”

Section: Further Optimizing the Resource Efficiency Of Anaerobic-aero...mentioning

confidence: 99%

Resource and Energy Utilization of Swine Wastewater Treatment: Recent Progress and Future Directions

Meng,

Jin,

Feng

et al. 2023

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Livestock and poultry farming, as a crucial component of agricultural production, poses a substantial threat to the ecological environment due to the discharge of wastewater. In recent years, researchers have proposed various resource treatment technologies for livestock and poultry breeding wastewater. However, a comprehensive discussion regarding the limitations and avenues for optimizing resource utilization technologies for livestock and poultry farming wastewater treatment is notably absent in existing literature. This paper takes swine wastewater as an illustrative case and undertakes a review of the advantages, disadvantages, and optimization directions of resource treatment technologies, including physical and chemical technology, microbial metabolism, microbial electrochemistry, constructed wetlands, and microalgae-based techniques. Based on mass balance, the recovery rates of various treatment technologies are estimated, and it was found that microbial electrochemistry and constructed wetland techniques may become the mainstream for resource utilization in the future. Furthermore, this paper emphasizes that in addition to resource efficiency, the optimization of resource utilization technologies for swine wastewater should also focus on the following aspects: (1) striking a balance between environmental impact and economic benefits; (2) reducing the cost of resource and energy utilization; and (3) safeguarding environmental and ecological security.

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Section: Further Optimizing the Resource Efficiency Of Anaerobic-aero...mentioning

confidence: 99%

Resource and Energy Utilization of Swine Wastewater Treatment: Recent Progress and Future Directions

Meng,

Jin,

Feng

et al. 2023

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Optimisation of chemical oxygen demand removal from animal house wastewater using central composite design

et al. 2022

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In the developing world, most animal farmhouses dispose of their wastewater without treatment and that creates conditions for the spread of diseases. To discourage this practice, there is the need to provide relatively simpler wastewater treatment options. Thus, this research work sought to optimise the chemical oxygen demand (COD) removal efficiency of a simple anaerobic digester by determining the optimum concentrations of rhamnolipid biosurfactant and potassium phosphate buffer needed to make the anaerobic digester remove COD efficiently. The central composite design was used for the optimization study. In the one factor at a time experiment, increasing the concentration of the potassium phosphate buffer from 1.07 g/l K2HPO4 + 0.53 g/l KH2PO4 to 1.37 g/l K2HPO4 + 0.83 g/l KH2PO4 increased the COD removal efficiency of the anaerobic digester from 19.3 to 24.7%. Also, increasing the concentration of rhamnolipid from 80 to 320 mg/l increased the efficiency of the digester from 24.2 to 26%. The percentage COD removal was highly improved (> 85%) in the optimisation study when both rhamnolipid and buffer were combined at high levels (+ 1). The model built from the central composite design reflected a good fit of the data obtained with R2 of 82.5% and a p value of 0.000. This study therefore demonstrated that a simple anaerobic digester can be used to remove COD in wastewater by optimising the concentrations of rhamnolipid and potassium phosphate buffers in the treatment system.

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Integrated anaerobic-aerobic processes for treatment of high strength wastewater: Consolidated application, new trends, perspectives, and challenges

Perumal

Sivasankari

Parimannan

et al. 2022

Integrated Environmental Technologies for Wastewater Treatment and Sustainable Development

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Removing Organic Matter and Nutrients from Swine Wastewater after Anaerobic–Aerobic Treatment

Cited by 6 publications

References 27 publications

Resource and Energy Utilization of Swine Wastewater Treatment: Recent Progress and Future Directions

Resource and Energy Utilization of Swine Wastewater Treatment: Recent Progress and Future Directions

Optimisation of chemical oxygen demand removal from animal house wastewater using central composite design

Integrated anaerobic-aerobic processes for treatment of high strength wastewater: Consolidated application, new trends, perspectives, and challenges

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