International Science Community Association Research Journal of Engineering Sciences 2278 - 9472 1 1 2012 07 26 Characterization of the domestic wastewaters and dimensionality of a pilot treatment station by lagooning at Abomey Calavi city- Benin 45 50 EN D.P Deshpande 1 Dept of Chemical Engineering, TKIET, Warananagar, MS, INDIA S.S. Haral 2 Dept. of Chemical Engineering, Govt. Polytechnic, Jalna, MS, INDIA S.S. Gandhi 3 Dept of Chemical Engineering, MIT, Alandi, Pune, MS, INDIA V.N. Ganvir 4 Dept, of Petrochemical Technology, LIT, Nagpur, MS, INDIA Vaibhav V. Prakash 1 Department of Computer Science and Engineering, Sri Jayachamarajendra College of Engineering, Mysore, INDIA Kutnikar Ajay L. 2 Department of Computer Science and Engineering, Sri Jayachamarajendra College of Engineering, Mysore, INDIA Tushar S. Patel 1 Computer Engineering Department, UVPCE, Kherva, Gujarat, INDIA Kiran R. Amin 2 Computer Engineering Department, UVPCE, Kherva, Gujarat, INDIA U.C. Roman 1 Sardar Vallabhai National Institute of Technology, Surat 395007, INDIA P.D. Porey 2 Sardar Vallabhai National Institute of Technology, Surat 395007, INDIA P.L. Patel 3 Sardar Vallabhai National Institute of Technology, Surat 395007, INDIA N. Vivekanandan 4 Central Water and Power Research Station, Pune 411024, INDIA Sanjay Purkar T. 1 Swami Vivekanand College of Engineering, Indore MP, INDIA Sunil Pathak 2 Swami Vivekanand College of Engineering, Indore MP, INDIA Sanjay Kumar Dubey 1 Dept. of Civil Engineering, Jabalpur Engineering College, Jabalpur INDIA Ahmad Khaleek 1 Structural Engineering, Jabalpur Engineering College, Jabalpur, MP, INDIA R.K. Yadav 2 Department of Civil Engineering, Jabalpur Engineering College, Jabalpur, MP, INDIA Rajeev Chandak 3 Department of Civil Engineering, Jabalpur Engineering College, Jabalpur, MP, INDIA M.P. Aina 1 Lab. des Sciences et Techniques de l’Eau de l’Ecole Polytechnique d’Abomey Calavi, UAC, Cotonou, BENIN and Lab. d’Etude et de Recherche en Chimie Appliquée, Ecole Polytech. d’Abomey/Calavi, UAC, Cotonou, BENIN B. Djihouessi 2 Lab. des Sciences et Techniques de l’Eau de l’Ecole Polytechnique d’Abomey Calavi, UAC, Cotonou, BENIN E.W. Vissin 3 Lab. Pierre Pagney, Climat, Eau, Environ., Dévelopement (LACEEDE) /DGAT/FLASH, Université d’Abomey-Calavi, BENIN N.M. Kpondjo 4 Lab. des Sciences et Techniques de l’Eau de l’Ecole Polytechnique d’Abomey Calavi, UAC, Cotonou, BENIN V. Gbèdo 5 Lab. des Sciences et Techniques de l’Eau de l’Ecole Polytechnique d’Abomey Calavi, UAC, Cotonou, BENIN K.C.D Sohounhloué 6 Lab. d’Etude et de Recherche en Chimie Appliquée, Ecole Polytech. d’Abomey/Calavi, UAC, Cotonou, BENIN > Research Paper 2012 7 2 2012 07 26 This study has been conducted to characterize the household wastewaters rejected by the populations of Tokpa-Zoungo, a populous district of the city of Abomey-Calavi in Southern Benin. The laboratory analyses on samples of wastewaters taken from the cesspools, and near several compounds (houses) in the study area, revealed that the average load of polluting effluents to be treated is important (36O mg / l COD, 180 mg / l for BOD5). The results show that the wastewaters rejected by the inhabitants are perfectly biodegradable. A treatment by lagooning, using microphyte with three stabilization basins yielded good results with the targeted purifying output being about 88%. The water thus treated is susceptible to be in conformity with discharge standards in sensitive areas such as the lake Nokoué which is the receiving medium in this case. The study also suggested a network for the collection of wastewaters rejected by the populations of the study zone. Wastewater treatment plant (WWTP) therefore will be the primary waste water receiving entity. Two phases have been achieved during the course of the present study, the first one being the topographic surveys that have been conducted to measure the slopes and the pressure drops to the WWTP, and the second. The dimensioning of the pipes to insure drainage of waters to the wastewater treatment plant WWTP. Copyright@ International Science Community Association