Asian Journal of Environment & Ecology <p style="text-align: justify;"><strong>Asian Journal of Environment &amp; Ecology (ISSN: 2456-690X)</strong> aims to publish high quality papers (<a href="/index.php/AJEE/general-guideline-for-authors">Click here for Types of paper</a>) in all areas of ‘Environment and Ecology’. This journal facilitates the research and aims to publish papers as long as they are technically correct, scientifically motivated. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.</p> SCIENCEDOMAIN international en-US Asian Journal of Environment & Ecology 2456-690X Wastewater Management of Korhogo City <p>The present study was conducted to provide more information on wastewater management in developing country cities, particularly in Korhogo a city in the north of Ivory Coast. Results showed that 23% of the residences discharge their wastewater either in rivers around the city, in pipes intended for storm water drainage, or on the way for laundry, crockery and/or bath water. 43% and 34% release their water through watertight and non-watertight facilities such as septic tanks and latrines, respectively. A factory evacuates its wastewater directly into the environment without any prior treatment. Only the Regional Hospital (CHR) has a lagoon system which is in a very advanced state of dysfunctioning. The city has a sludge treatment site that receives on average between 30 and 34 m<sup>3</sup> per day, well below 100 m<sup>3</sup> per day (sizing volume), leading to a significant algal development in the biological treatment basins and a fairly average yield of the plant below 55% at the end of treatment.</p> Kouakou Yao Salomon Seyhi Brahima Gnamba Franck Maxime Kouassi N’guessan Martial Kouame Nanan Audrey ##submission.copyrightStatement## 2019-11-06 2019-11-06 1 11 10.9734/ajee/2019/v11i130126 A Comparative Study on the Effects of Leachate on Groundwater in Selected Dumpsites in Rivers State, Nigeria <p>The health and environmental risk associated with unlined open waste dumpsites are worrisome. This study, therefore, evaluated the leachate and its final fate on groundwater pollution at selected solid wastes dumpsites in Rivers State. Leachate samples collected near the dumpsites were analyzed to determine the physical and biochemical characteristics. The two studied dumpsites indicated that the computed TCB were 296.33±6.22 cfu/100 ml and 182.68±21.33 cfu/100 ml respectively which were within the permissible limits of 400cfu/100 ml specified by World Health Organization (WHO) and Federal Ministry of Environment (FMEnv); which suggest low quantities of disease-causing agents in the groundwater. The total heterotrophic bacteria (THB) were 21x10<sup>4 </sup>cfu/ml and 17x10<sup>4 </sup>cfu/ml. These high values of THB may not be an indication of contamination of groundwater but it indicates a gradual decline in raw water quality. The values of SO<sub>4</sub><sup>2-</sup>, PO<sub>4</sub><sup>3-</sup>, TDS, DO, BOD and COD at the dumpsites were 196.52±6.26 mg/l and 9.12±0.59 mg/l, 139.23±3.19 mg/l and 3.81±0.68 mg/l, 5952.23±72.52 mg/l and 12663.33±490.95 mg/l;1.51±0.42. mg/l and 2.02±0.16 mg/l; 31.22±4.12 mg/l and 21.33±3.51 mg/l, and313.30±6.57 mg/l and 270.33±26.16 mg/l respectively which exceeded the standards of the WHO and FMEnv. The high values of analyzed parameters were an indication of the groundwater contamination. Heavy metals in the Rumuosi dumpsite indicated 11.31±1.33 mg/l, 11.01±0.67 mg/l, 361.84±12.31 mg/l, 118.03±5.74 mg/l and 84.77±4.84 mg/l for Pb, As, Mn, Fe and Zn respectively. While Heavy metals thresholds at Igwuruta were 0.004±0.005 mg/l, 0.04±0.07 mg/l, 0.05±0.08 mg/l, 0.08±0.14 mg/l and 0.15±0.04 mg/l respectively. Rumuosi thresholds exceeded the standards, indicating that the exposed local people in the nearby communities may experience cases of non-carcinogenic and carcinogenic health risk by drinking the groundwater. The leachate pollution index (LPI) at the studied dumpsites indicated 13.58 and 12.9 which exceeded the internationally accepted benchmark of 7.38; indicating that the Rumuosi leachate was more polluted than Igwuruta leachate. The analysis of variance (ANOVA) of the pollutant characteristics indicated a significant difference at p=0.05 across the physicochemical and biological indicators at Rumuosi dumpsite over Igwuruta dumpsite. The researcher recommended the practice of sanitary landfill which may reduce the risk of leachate percolation, a primary source of groundwater contamination.</p> N. Ugbebor, John Ntesat, Brownson ##submission.copyrightStatement## 2019-11-06 2019-11-06 1 13 10.9734/ajee/2019/v11i130127