Wastewater Treatment using The Photosynthetic Bacteria  at Parksarp Village, Xaythany District, Vientiane Capital

phoummixay siharath; Khamxay  Xayyamunh; Somchay  Vilaychaleun; Khampasith  Thammathevo; Chankhachone  Sonemanivong; Soulyphan  Kannitha; Phetsakhone  Nhaovarath; Bounmy  Phommakone

doi:10.55927/ajns.v2i4.5563

Authors

phoummixay siharath National University of Laos
Khamxay Xayyamunh National University of Laos
Somchay Vilaychaleun National University of Laos
Khampasith Thammathevo National University of Laos
Chankhachone Sonemanivong National University of Laos
Soulyphan Kannitha National University of Laos
Phetsakhone Nhaovarath National University of Laos
Bounmy Phommakone UNDP Lao PDR

DOI:

https://doi.org/10.55927/ajns.v2i4.5563

Keywords:

BOD5, COD, Photosysthetic bacteria, TSS, TKN

Abstract

Untreated waste water from the piggery farm will damage the environment and society, if, it is discharged to environment, in particular, direct impact on surrounding communities. The propose of the research is to investigate the characteristics and efficiency of the photosynthetic bacteria in employing on wastewater treatment systems. The experiment is designed and simulated the stabilization tank system that includes: an aerobic tank, sedimentation (excess sludge) tank, clear water tank and all tanks are used the same size of 50 liters, wastewater from a piggery farm was introduced into the treatment tank with a dry matter ratio 5% of the total water mass. Therefore, BOD₅, COD, TSS, TKN, and pH were made prior to entering the treatment tank, photosynthetic bacteria is added 200 ml per week, detention time 7 days and after 25 days of treatment. The experiment found that, BOD₅, COD, TSS, TKN concentrations reduce continuously from 366 mg/l - 192 mg/l (47.54%), 90,000 mg/l - 4,000 mg/l (95.56 %), 30 mg/l - 7 mg/l (76.67%) and 3.92 mg/l - 0.08 mg/l (97.96%), respectively.

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