Microalgae for Effective Nitrogen and Phosphorus Removal from Aquaculture Effluence

JIA Wei; NIE Yilei; CHEN Hong; LUO Lijin; LE Zhanxian; ZHUANG Hong; ZHENG Junrong

doi:10.19303/j.issn.1008-0384.2021.02.016

Volume 36 Issue 2

Feb. 2021

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JIA W, NIE Y L, CHEN H, et al. Microalgae for Effective Nitrogen and Phosphorus Removal from Aquaculture Effluence [J]. Fujian Journal of Agricultural Sciences，2021，36（2）：243−248 doi: 10.19303/j.issn.1008-0384.2021.02.016

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JIA W, NIE Y L, CHEN H, et al. Microalgae for Effective Nitrogen and Phosphorus Removal from Aquaculture Effluence [J]. Fujian Journal of Agricultural Sciences，2021，36（2）：243−248 doi: 10.19303/j.issn.1008-0384.2021.02.016

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Microalgae for Effective Nitrogen and Phosphorus Removal from Aquaculture Effluence

doi: 10.19303/j.issn.1008-0384.2021.02.016

Fujian Institute of Microbiology, Fuzhou, Fujian　350007, China

Received Date: 2019-08-29
Rev Recd Date: 2020-10-27

Available Online: 2020-11-24

Publish Date: 2021-02-28

Abstract

Abstract

Objective Microalgae capable of effectively removing nitrogen and phosphorus from wastewater were screened for potential applications on antipollution or effluence treatment at aquaculture farms. Method Three selected microalgae, Chlorella sp. JY-1, Chlorella sp. SY-4, and Desmodesmus sp. SH-1, were evaluated for their capability in removing nitrogen and phosphorus from the wastewater at a shrimp aquaculture farm. Result After 5d of cultivation, the microalgae grew to a cell density in the (7±1)‰ salinity medium at 1.56×10⁷·ml⁻¹ on JY-1, 1.47×10⁷·ml⁻¹ on SY-4, and 6.62×10⁶·ml⁻¹ on SH-1. The removal rate on total nitrogen was 50.36% by JY-1, 41.51% by SY-4, and 49.74% by SH-1; that on ammonia nitrogen, 96.29% by JY-1, 84.92% by SY-4, and 96.65% by SH-1; that on nitrate nitrogen, 15.84% by JY-1, 3.69% by SY-4, and 12.56% by SH-1; and, that on total phosphorus, 93.51% by JY-1, 82.38% by SY-4, and 94.25% by SH-1; but not significant on nitrite nitrogen by any of them. The microalgae appeared to grow normally in a culture medium of 5%, 10%, 20% or 30% salinity. Among them, Chlorella sp. JY-1 performed the best on growth as well as nitrogen and phosphorus removal in the test wastewater. Conclusion Chlorella sp. JY-1 appeared to offer a promising potential for application of purifying aquaculture effluence.
- Microalgae,
- aquaculture wastewater,
- nitrogen and phosphorus removal

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References(23)

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