Abstract:The performance evaluation of the waste stabilization pond (WSP) as a model of domestic wastewater treatment unit in rural area was carried out. The unit comprised of anaerobic, facultative and maturation ponds in two series. The effluents of WSP which are discharged in the drain had the BOD reduced to 109-245 mg L , 44.3% removal). The reduction percentages of total coliform (TC), faecal coliform (FC), E.coli, faecal streptococci (FS), salmonellae and Listeria were 98.8, 95.6, 79.4, 96.8, 97.9 and 89.5% respectively. Also, the removal percentages of coliphage and infectious rotaviruses were 49.03 and 99.66% respectively. Identical sequences of rotaviruses VP-6 detected in the final effluent of the pond and the drain were observed. Euglena variables and Chlamydomonas reinhardii were predominant in anaerobic, facultative and maturation effluents. It has been noticed that pollution affected species diversity of zooplankton; the number of species in facultative pond was 8 species because of high pollution level, whereas in maturation pond increased to 21 species. Also, pollution in anaerobic pond increased density of ciliates (Protozoa) which are known to be bio-indicators of organic pollution. The percent removal of ciliates in the maturation pond was 70%. It is recommended to make some modifications in the design to increase the efficiency of WSP.
The reliability on the groundwater wells in Wadi El-Natrun Region was determined in order to help in agricultural development plans for adding a new water resources and new agricultural land. Whereas, the data about the construction of 6 groundwater wells in this region, were studied analysis to focus on 6 main indicators of well production and cost of water extracting. Those indicators include the study aquifer variables as well storativity (s), ground water properties, well efficiency, transmissivity of aquifer (T) wells variables as radius of influence (R) and the hydraulic conductivity (K). In addition the total cost of pumping 1m 3 water. Based on a surveying and collecting data, statistical and mathematical analyses were conducted for identifying these data. The gained results showed the follows; the values of total dissolved solids (T.D.S) are ranging from 451 to 1000 mg l -1 and the pH are ranging from 6.70 to 8.22.Thus ,the extracted water found to be suitable for agricultural purposes and valid to irrigation directly without any treatments. When applying mathematical equation for groundwater flow and selection equation to calculate well variables and aquifer has to follow that equations for unconfined aquifer due to the presence surface layer of clay that leads aquifer at that region is unconfined. The average total costs of well-constructed at a depth of (200 m) and a diameter of (250mm) were estimated about 298310 LE. However, the cost of pumping 10 3 m 3 water of the total amount water pumped by the well during the period of operation throughout his life were estimated about 28.91 L.E.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.