Development of Microalgae-Bacteria Consortium for the Treatment of Domestic Waste Water

Microalgae and bacteria are diverse in nature and can be utilized to form complementary consortium for efficient waste water treatment and nutrient recovery. The purpose of the study was to isolate microalgae and bacteria from the indigenous population L1 & L2 with waste water treatment efficacy...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2024-06, Vol.235 (6), p.347, Article 347
Main Authors: Sharma, Shiwani Guleria, Singla, Poonam, Kocher, Gurwinder Singh
Format: Article
Language:English
Subjects:
Aeration
Algae
Aquatic microorganisms
Atmospheric Protection/Air Quality Control/Air Pollution
Bacteria
Climate Change/Climate Change Impacts
Consortia
Earth and Environmental Science
Environment
Household wastes
Hydrogeology
Microalgae
Phytoplankton
Soil Science & Conservation
Treated water
Wastewater treatment
Water Quality/Water Pollution
Water treatment
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Summary:Microalgae and bacteria are diverse in nature and can be utilized to form complementary consortium for efficient waste water treatment and nutrient recovery. The purpose of the study was to isolate microalgae and bacteria from the indigenous population L1 & L2 with waste water treatment efficacy. Two microalgae i.e. PL1 and PL2 and four bacteria i.e. B1(L1), B3(L1), B2(L2) and B4(L2) were selected with potential of waste water treatment. Twenty nine different consortia were designed based on possible combinations of selected microalgae and bacteria. Among all, consortium 29, which comprises both microalgae PL1 & PL2 and one bacteria i.e. B4(L2) has shown the significant reduction in BOD (82.9%), COD (77.77%), EC (53.8%), TDS (74.3%), TN (71.05%), and TP (69.25%) after 15 days of treatment. Further higher reduction in BOD, COD, TN & TP in treated water was achieved with application of aeration source. Molecular identification of members of consortia 29 revealed that PL1 was  Chlorella variabilis (Accession No. OR122520.1), PL2 was tentatively identified as  Desmodesmus sp. , and B4(L2) (Accession No. OR467496.1) was identified as  Paracoccus sp . SEM observations were correlated with waste water treatment performance of consortium as microalgae PL1 & PL2 and bacteria B4(L2) can live together. Hence, wastewater treatment performance of developed microalgae-bacteria consortium has established a research roadmap for possible implementation of the consortium systems for large scale treatments of various kind waste waters.
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-024-07139-9