Recycling Wastewater in Intensive Swine Farms: Selected Case Studies in Vietnam

GIANG, Nguyen Thị Huong; AN, Ngo The; HUONG, Le Thi Thu; Yabe, Mitsuyasu; THANG, Nguyen Tat; HIEU, Vu Ngoc; Son, Cao Truong

doi:10.5109/4363559

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…The inflows to the pressure-sensitive sewer system can only be evaluated and verified with the actual parameters of the long-term investment [ 37 ]. Each pressurized sewer system will be characterized by slightly different dynamics of inflow to the pumping wells [ 38 ].…”

Section: Discussionmentioning

confidence: 99%

An Evaluation of Pumping Stations for Pressure Sewers System Made from Concrete Coils, Polymer Concrete, and High-Density Polyethylene (HDPE)

2023

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A deficiency in accurate and current regulations, along with a lack of experience in sanitary construction, makes the installation of sewers challenging. Using models, it was determined that if the pumps were operated simultaneously, the service would last for a long time over the entire sewer system. With a daily sewage inflow of 468 dm3, the system was found to run 14.4–14.7% longer than expected at 100 pumping stations. Each month, the pressure-sensitive sewer system receives more than 51 min of extended service from the city’s central sewer system. Increasing wastewater inflow and the number of pumps decrease centrifugal pump capacity. In the study, the main findings were related to the number of pumps. With 100 centrifugal pumps simultaneously, the pressure-based system was most effective. An increase in operation time of 18.4–19.1% was observed over a period of 30 days and an average sewage inflow of 705 dm3 for each. In place of gravity sewerage, sewerage can be used. Pressure sewer systems should be designed in a way that addresses technical as well as economic concerns. Accordingly, this study indicates that pressure sewerage is a viable alternative to gravity sewerage in villages with scattered drinking water supplies.

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Section: Discussionmentioning

confidence: 99%

An Evaluation of Pumping Stations for Pressure Sewers System Made from Concrete Coils, Polymer Concrete, and High-Density Polyethylene (HDPE)

2023

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“…Nguyen Thi Huong Giang et al (2023) Recycling livestock wastewater has been recently promoted as a potential approach to reduce the environmental impact and the loss of nutrients contained in the effluent. According to the most recent research conducted in four representative provinces of Vietnam, namely Hanoi, Thai Binh, Ha Tinh, and Dong Nai, recycling swine wastewater has been popularly practiced by many swine farms (Giang et al, 2021). However, the backgrounds related to wastewater reuse by farmers in these provinces have not been mentioned in any research.…”

Section: Introductionmentioning

confidence: 99%

Applying the Theory of Planned Behavior to Determine the Influencing Factors of Recycling Pig Wastewater for Crop Cultivation in Hanoi City

Giang

Chinh²,

Vien

et al. 2023

vjas

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The study was conducted to analyze the factors affecting the use of pig wastewater for crop cultivation in Hanoi city. Through the application of the Theory of Planned Behavior to develop the theoretical framework and structural equation modeling, the study showed that the behavior intention influenced the recycling behavior. Attitude toward the behavior (AT), social norms (SN), and perceived behavioral control (PBC) were important influencing factors on the intention to perform this behavior with standardized regression coefficients of ß = 0.96 (P <0.001), ß = -0.826 (P <0.001), and ß = -0.34 (P <0.001), respectively. These research results serve as the initial reference for policies and studies related to the use of pig wastewater.

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Simultaneous Organic Matter and Nitrogen Removal from Piggery Slaughterhouse Wastewater Using Bioaugmented Gaslift Membrane Bioreactor

Toàn

Tuyen

Hai

et al. 2022

CLEAN Soil Air Water

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A single bioaugmentation reactor and a side‐stream gaslift membrane bioreactor combined with bioaugmentation are conducted to treat real wastewater from a centralized piggery slaughterhouse in Vietnam. The bioaugmented reactor is inoculated with heterotrophic microorganisms (Bacillus sp.) isolated from piggery slaughterhouse wastewater. The results of a single bioaugmentation experiment show high removal efficiency of chemical oxygen demand (COD) (84.8%–97.5%) and total nitrogen (TN) (69.9%–87.2%) at loading rates of 1.28–3.89 and 0.14–0.37 kg m−3 d−1, respectively. The combined system demonstrates a significantly higher TN removal efficiency (89.0%–96.1%) (p < 0.001), more stable flux (36.0–38.4 L m−2 h−1), and transmembrane pressure (0.95–1.05 bar), and better capacity of separation of solid–liquid phases compared to the single bioaugmentation. High COD and TN removal efficiency is possibly due to assimilation and simultaneous nitrification and denitrification processes. The results of this study also indicate the feasibility and propitious efficiency of the bioaugmented gaslift membrane bioreactor for piggery slaughterhouse wastewater treatment.

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Recycling Wastewater in Intensive Swine Farms: Selected Case Studies in Vietnam

Cited by 7 publications

References 7 publications

An Evaluation of Pumping Stations for Pressure Sewers System Made from Concrete Coils, Polymer Concrete, and High-Density Polyethylene (HDPE)

An Evaluation of Pumping Stations for Pressure Sewers System Made from Concrete Coils, Polymer Concrete, and High-Density Polyethylene (HDPE)

Applying the Theory of Planned Behavior to Determine the Influencing Factors of Recycling Pig Wastewater for Crop Cultivation in Hanoi City

Simultaneous Organic Matter and Nitrogen Removal from Piggery Slaughterhouse Wastewater Using Bioaugmented Gaslift Membrane Bioreactor

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