scholarly journals Studied on the Bioremediation Effect of Some Selected Microbes on Domestic Sewage Water

2017 ◽  
Vol 12 (03) ◽  
pp. 21-23
Author(s):  
P. K. Agrawal
Keyword(s):  
Sewage Water ◽  
Domestic Sewage

scholarly journals Growth Performance of the Mudfish, Clarias anguillaris (Pellegrin, 1923) in Treated and Untreated Domestic Sewage

2012 ◽  
Vol 2 (1) ◽  
pp. 62
Author(s):  
Agatha A Nwabueze
Keyword(s):  
Condition Factor ◽  
Growth Parameters ◽  
Oxygen Demand ◽  
Sewage Water ◽  
Domestic Sewage ◽  
Fish Growth ◽  
State University ◽  
Total Length ◽  
Untreated Sewage ◽  
Stock Tank

<p>Growth of the mudfish, <em>Clarias anguillaris</em> in of treated and untreated domestic sewage was investigated. Six weeks old fingerlings obtained from Delta State University, Asaba Campus Research Farm were used and the study lasted for 14 weeks. Fingerlings were kept in stock tank containing 10, 000 cm<sup>3 </sup>bore hole water and allowed to acclimate for two weeks. The stock tank was well aerated and fingerlings fed twice daily at the rate of 4% body weight with poultry mash in a daily renewal static bioassay system. The stock (0%- control) was then diluted with bole hole water serially to give 25, 50, 75 % strength of the treated and untreated domestic sewage and 100 % into which 10 fingerlings each were introduced. Weekly measurement of growth parameters of fish total length and weight were taken. The condition factor (k) was calculated. Increase in fish total length and weight in control, treated and untreated domestic sewage was observed. Growth of fish was significantly higher (P&lt;0.05) in the treated domestic sewage than in the untreated. There was no significant (P&gt;0.05) difference in total length of fish in all concentrations of treated domestic sewage as compared with controls. However, fish in 100% concentration of domestic sewage had a slower increase in total length than fish in other treated concentrations. Weight gain in <em>C. anguillaris</em> was higher in the 50% but not significantly (P&gt;0.05) higher than other concentrations of treated domestic sewage. The increase in fish weight in the untreated domestic sewage was not significantly (P&gt;0.05) different in all the treatments but was significantly (P&lt;0.05) lower than that of fish in the control. Condition factor of <em>C. anguillaris </em>in both the treated and untreated domestic sewage varied and decreased except for fish in 100% treated domestic sewage which was observed to have an increase in the value of the condition factor from 3.76g cm<sup>-3</sup> to 4.73g cm<sup>-3</sup>. Untreated domestic sewage water showed a higher turbidity, biochemical Oxygen Demand (B.O.D), alkalinity and nitrate composition of than treated sewage which had higher oxygen content and was clearer in appearance than the untreated. Microbial analysis shows the presence of <em>Escherichia fecalis, Streptococcus fecalis </em>and<em> Enterococcus fecalis </em>in untreated sewage with ciliated protozoans in both treated and untreated sewage. This study has shown that treated domestic sewage is best for healthy fish growth with reduced risk of transfer of pathogens.</p>

scholarly journals Removal of Total Nitrogen and Phosphorus Using Single or Combinations of Aquatic Plants

2019 ◽  
Vol 16 (23) ◽  
pp. 4663 ◽  
Author(s):  
Su ◽  
Li ◽  
Li ◽  
Xu ◽  
Li ◽  
...  
Keyword(s):  
Plant Species ◽  
Sewage Water ◽  
Domestic Sewage ◽  
Polluted Water ◽  
Nitrogen And Phosphorus ◽  
Total N ◽  
Guangzhou City ◽  
Salvinia Natans ◽  
Two Stages ◽  
Living Area

Phytoremediation is a potentially suitable technology for taking up large amounts of N and P during plant growth and the removal of plant material, thereby avoiding eutrophication. We compared the capacity of nine different aquatic plant species for removing total P (TP), total N (TN), and NH4+-N from raw domestic sewage wastewater collected from a living area located in Guangzhou city, China, and different concentrations of artificial wastewater. The experiments were performed in two stages, namely screening and modification. In the screening stage, four plant species were identified from the nine grown in raw domestic sewage water for 36 days. In the modification stage, the TN and TP removal ability of different plant combinations were determined in artificial wastewater at different N/P concentrations. After having been grown in monocultures for 46 days, Ipomoea aquatica (90.6% and 8.8%) and Salvinia natans (67.3% and 14.2%) obtained the highest TP removal efficiency in lightly and highly polluted wastewater, respectively. The combination of S. natans and Eleocharis plantagineiformis effectively removed TP and TN from lightly polluted water, suggesting that this combination is suitable for phytoremediation of eutrophic wastewater.

scholarly journals Impact of Long-Term Application of Domestic Sewage Water on Soil Properties Around Hubli City in Karnataka, India

2015 ◽  
Vol 4 (3) ◽  
pp. 272-276 ◽  
Author(s):  
Bincy K. Varkey ◽  
G. S. Dasog ◽  
Suhas Wani ◽  
K. L. Sahrawat ◽  
Manjunatha Hebbara ◽  
...  
Keyword(s):  
Soil Properties ◽  
Sewage Water ◽  
Domestic Sewage

Purification Efficiency of Several Constructed Wetland Plants in COD Disposal in Domestic Sewage

2012 ◽  
Vol 518-523 ◽  
pp. 2690-2694
Author(s):  
Min Lu ◽  
Zhen Guo ◽  
Dong He Li
Keyword(s):  
Constructed Wetland ◽  
Sewage Water ◽  
Domestic Sewage ◽  
Wetland Plants ◽  
Species Selection ◽  
Phragmites Communis ◽  
Treatment Technology ◽  
Typha Orientalis ◽  
Canna Generalis ◽  
Selection Of

The research on the species selection of constructed wetland plants and the purification effects of the plants is crucial in ecological wastewater treatment technology. This paper studies the purification effects of different residence time of sewage water, different constructed wetland plants and their synergistic effect on COD disposal in domestic sewage. The results indicate that the best plant combination in purifying COD is that of Phragmites communis, Typha orientalis and Canna generalis, followed by that of Phragmites communis, Arundo donax and Canna generalis. The best plant species in purifying COD is Typha orientalis, followed by Phragmites communis.

scholarly journals Impact of Treated Domestic Sewage Irrigation on Crop Yield, Plant Uptake and Soil Properties in Central India

2017 ◽  
Vol 7 (2 (S)) ◽  
pp. 79
Author(s):  
A.R. Mhaske ◽  
P. J. Nikam
Keyword(s):  
Water Demand ◽  
Plant Uptake ◽  
Central India ◽  
Domestic Wastewater ◽  
Nutrient Status ◽  
Sewage Water ◽  
Domestic Sewage ◽  
Well Water ◽  
Sewage Irrigation ◽  
Treated Sewage

The rising population has not only increased the fresh water demand but also increased the volume of wastewater generated. Increasing need for water has resulted in the emergence of domestic wastewater application for agriculture and its relative use. In the present study a field experiment was conducted during 2012-13 and 2013-14 in which spinach (Spinacia oleracia) were irrigated with well water (WW) and domestic treated sewage water (DTSW). The use of the DTSW has shown improvement in the physicochemical properties of the soil, yield along with the nutrient status as compared to the application of WW. Post harvest pH of the soil in DTSW was in the range 7.85 whereas it was 7.93 in WW. EC and OC were found 0.43dS m-1 and 5.41 g kg-1 respectively in DTSW whereas it was 0.31 dS m-1 and 5.27 g kg-1 respectively in WW. NPK were found 279.6, 17.22 and 435.70 kg ha-1 respectively in DTSW whereas it was found, 266.8, 16.44 to 428.1 kg ha-1 respectively in WW. The physical properties of the soil like BD and HC observed 1.32 Mg m-3and 1.50 cm hr-1 respectively in DTSW and it was found 1.42 Mg m-3 and 1.54 cm hr-1 respectively in WW. The content of micronutrients and heavy metals in soil and plant due to irrigation of DTSW were well below the phytotoxicity limits in both soil and plant. The findings give applicable advice to commercial farmers and agricultural researchers for proper management and use of treated domestic wastewater for agricultural purpose.

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