Effect of wastes quality on treatment efficiency with duckweed

G. Oron; H. Willers

doi:10.2166/wst.1989.0266

Effect of wastes quality on treatment efficiency with duckweed

G. Oron, H. Willers

Research output: Contribution to journal › Conference article › peer-review

25 Scopus citations

Abstract

Outdoor experiments with Lemna gibba (a duckweed species) grown in mini-ponds were conducted for several months during summer 1986. Duckweed was grown on two different types of wastes: (a) Digested sludge after an anaerobic phase of the settled fraction of domestic sewage mixed with the supernatant (experiment A); and (b) supernatant of domestic sewage at three different salinity levels defined by electrical conductivity (EC) (control, 4.0 dS/m and 6.6 dS/m) (experiment B). The results indicate that duckweed can grow well on a mixture of digested sludge and supernatant. Dry yield (experiment A) was in the range of 10 to 15 g/m² per day with a protein content close to 30 percent. Effluent quality meets agricultural irrigation criteria. Duckweed growth on saline waste was mostly negatively affected when the electrical conductivity of the influent exceeded 4 dS/m.

Original language	English
Pages (from-to)	639-645
Number of pages	7
Journal	Water Science and Technology
Volume	21
Issue number	6-7 -7 pt 2
DOIs	https://doi.org/10.2166/wst.1989.0266
State	Published - 1 Jan 1989
Event	Proceedings of the Fourteenth Biennial Conference of the International Association on Water Pollution Research and Control. Part 2 - Brighton, Engl Duration: 18 Jul 1988 → 21 Jul 1988

ASJC Scopus subject areas

Environmental Engineering
Water Science and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.2166/wst.1989.0266

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title = "Effect of wastes quality on treatment efficiency with duckweed",

abstract = "Outdoor experiments with Lemna gibba (a duckweed species) grown in mini-ponds were conducted for several months during summer 1986. Duckweed was grown on two different types of wastes: (a) Digested sludge after an anaerobic phase of the settled fraction of domestic sewage mixed with the supernatant (experiment A); and (b) supernatant of domestic sewage at three different salinity levels defined by electrical conductivity (EC) (control, 4.0 dS/m and 6.6 dS/m) (experiment B). The results indicate that duckweed can grow well on a mixture of digested sludge and supernatant. Dry yield (experiment A) was in the range of 10 to 15 g/m2 per day with a protein content close to 30 percent. Effluent quality meets agricultural irrigation criteria. Duckweed growth on saline waste was mostly negatively affected when the electrical conductivity of the influent exceeded 4 dS/m.",

author = "G. Oron and H. Willers",

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journal = "Water Science and Technology",

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publisher = "IWA Publishing",

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note = "Proceedings of the Fourteenth Biennial Conference of the International Association on Water Pollution Research and Control. Part 2 ; Conference date: 18-07-1988 Through 21-07-1988",

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T1 - Effect of wastes quality on treatment efficiency with duckweed

AU - Oron, G.

AU - Willers, H.

PY - 1989/1/1

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N2 - Outdoor experiments with Lemna gibba (a duckweed species) grown in mini-ponds were conducted for several months during summer 1986. Duckweed was grown on two different types of wastes: (a) Digested sludge after an anaerobic phase of the settled fraction of domestic sewage mixed with the supernatant (experiment A); and (b) supernatant of domestic sewage at three different salinity levels defined by electrical conductivity (EC) (control, 4.0 dS/m and 6.6 dS/m) (experiment B). The results indicate that duckweed can grow well on a mixture of digested sludge and supernatant. Dry yield (experiment A) was in the range of 10 to 15 g/m2 per day with a protein content close to 30 percent. Effluent quality meets agricultural irrigation criteria. Duckweed growth on saline waste was mostly negatively affected when the electrical conductivity of the influent exceeded 4 dS/m.

AB - Outdoor experiments with Lemna gibba (a duckweed species) grown in mini-ponds were conducted for several months during summer 1986. Duckweed was grown on two different types of wastes: (a) Digested sludge after an anaerobic phase of the settled fraction of domestic sewage mixed with the supernatant (experiment A); and (b) supernatant of domestic sewage at three different salinity levels defined by electrical conductivity (EC) (control, 4.0 dS/m and 6.6 dS/m) (experiment B). The results indicate that duckweed can grow well on a mixture of digested sludge and supernatant. Dry yield (experiment A) was in the range of 10 to 15 g/m2 per day with a protein content close to 30 percent. Effluent quality meets agricultural irrigation criteria. Duckweed growth on saline waste was mostly negatively affected when the electrical conductivity of the influent exceeded 4 dS/m.

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DO - 10.2166/wst.1989.0266

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IS - 6-7 -7 pt 2

T2 - Proceedings of the Fourteenth Biennial Conference of the International Association on Water Pollution Research and Control. Part 2

Y2 - 18 July 1988 through 21 July 1988

ER -

Effect of wastes quality on treatment efficiency with duckweed

Abstract

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UN SDGs

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