Effect of Organic Surface Load on Process Performance of Pilot-Scale Algae and Duckweed-Based Waste Stabilization Ponds

Zimmo, Omar; Steen, Peter; Gijzen, Huub J.

doi:10.1061/(asce)0733-9372(2005)131:4(587)

Cited by 28 publications

(11 citation statements)

References 16 publications

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“…However, in cold climates, wastewater is applied at very low hydraulic loading rates [4] and low organic loading rates of less than 60 kgBOD 5 /ha/d [5]. Waste stabilization ponds are commonly used for treatment of wastewater from domestic, industrial and agricultural sources [6]- [9] with an objective of reduction of organic matter [2] [10] [12], pathogenic organisms [13]- [15] and nutrients particularly nitrogen [3] [6] [16].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Nitrogen Transformation and Removal in a Pilot High Rate Pond

Mayo¹,

Hanai²

2014

JWARP

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The transformation and removal of nitrogen was studied in a pilot high rate pond with a surface area of 10.2 m 2 and water depth of 60 cm. The pilot unit received wastewater from an existing field scale primary facultative pond at the University of Dar es Salaam. Wastewater samples were collected from the influent and effluent of high rate pond and were analyzed for physical-chemical parameters in the laboratory and in situ. An appropriate model complexity was selected, from which a conceptual model was then developed to model various processes in the system using STELLA 6.0.1 software. The study demonstrated that dominant nitrogen transformation processes in HRP were nitrification and denitrification, which transformed 0.95 and 0.87 gN/m 2 •d, respectively. These were followed by mineralization (0.37 gN/m 2 •d), ammonia uptake by microorganisms (0.34 gN/m 2 •d), volatilization (0.30 gN/m 2 •d), sedimentation (0.24 gN/m 2 •d), and regeneration (0.15 gN/m 2 •d). Uptake of nitrate was not observed because of microorganisms preference for ammonia, which was abundant in the pond. The major nitrogen transformation mechanisms in high rate pond were denitrification, net sedimentation and volatilization, which accounted for 69.1%, 7.1% and 23.8% of the total permanent removal mechanisms of nitrogen in High Rate Pond.

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Section: Introductionmentioning

confidence: 99%

Dynamics of Nitrogen Transformation and Removal in a Pilot High Rate Pond

Mayo¹,

Hanai²

2014

JWARP

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“…The effect of organic loading was compared for pilot-scale algae-based ponds and duckweed-based ponds (Zimmo et al, 2005). A linear correlation was found between organic surface loading rates and BOD removal rates for both ponds, although removal efficiencies for BOD and SS were higher for the duckweed pond.…”

Section: Aquatic Systemsmentioning

confidence: 99%

Natural Treatment and Onsite Processes

Kruzic¹,

White²

2006

Water Environment Research

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“…can absorb pollution through the roots which can absorb well from aquatic and sedimentary components [11]. Besides, Lemna has an effective phytoremediation ability in improving the quality of water contaminated [12]. Based on the description, Lemna and Kiapu aquatic plants have the ability as phytoremediation agents.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Aquatic Plants as Phytoremediation Agents of Tofu Liquid Waste

Dewi

Hasan

Hamdani

et al. 2020

AJFAR

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The tofu industry produces a lot of tofu liquid waste and has the potential to cause waters to be toxic and dangerous for the life of the biota aquatic. This research uses a phytoremediation method using floating water plants. The purpose of this research was to obtain water plants that have better absorption ability as phytoremediation agents for tofu liquid waste between Lemna and Kiapu aquatic plants. This research was conducted at the Laboratory of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Padjadjaran University from March to September 2019. The method used in this research was an experimental method with a Completely Randomized Design (CRD) consisting of three treatments and five replications. Tofu liquid waste samples were obtained from the Tofu Factory in the Cibuntu Tofu Industry Center. Physical and chemical parameters observed include temperature, acidity, dissolved oxygen, BOD5, nitrate, and phosphate. The results showed that the Kiapu had better nitrate and phosphate absorption ability than Lemna and the combination treatments for 15 days of observation. The result showed that the decrease in nitrate concentration was 10.12-62.24% and the decrease in phosphate concentration was 6.67-54.23%. Kiapu can be recommended as phytoremediation agents for tofu liquid waste to remediate high organic matter before being discharged directly into water bodies.

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Effect of Organic Surface Load on Process Performance of Pilot-Scale Algae and Duckweed-Based Waste Stabilization Ponds

Cited by 28 publications

References 16 publications

Dynamics of Nitrogen Transformation and Removal in a Pilot High Rate Pond

Dynamics of Nitrogen Transformation and Removal in a Pilot High Rate Pond

Natural Treatment and Onsite Processes

Utilization of Aquatic Plants as Phytoremediation Agents of Tofu Liquid Waste

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