Revista de Ingeniería Civil y Ambiental

Contribution of Gaharwa Lake to Sustainable Solution for Availing Sufficient Domestic water

Abstract

Olivier Irumva, Gratien Twagirayezu, Jean Claude Nizeyimana, Elyse Masengesho, Rosette Niyirora and Jean Paul Nkundabose

Rwanda Government, via its Ministry of Infrastructure (MININFRA) and authority in charge of Water and Sanitation Corporation (WASAC) has instigated copious initiatives aimed at finding durable ensues to water scantiness in some country districts especially in Bugesera District. To date it lived by 453451 peoples with only 3600 m³/d available from Ngenda Water Treatment Plant (WTP) intents to treat cyohoha Lake. This research is conducted to handle water scantiness issues in Bugesera District with the aid of Gaharwa Lake. For attaining research directs, forms and onsite interrogates have been conducted, and Hazen–Williams equation has been used in designing processes. Therefore, the water treatment plant was designed with an awareness of water quality and quantity, population growth rate. Findings indicated that analyzed water quality parameters were bottled up by low turbidity: 4.2 NTU, Zn: 0.12 mg/L, NO₃: 0.4 mg/L, Manganese: 0.047 mg/L, NH₃-N: 0.04 mg/L, Fe²⁺: 0.61 mg/L, PH: 6.6, Fluoride: 0.11 mg/L, Alkalinity: 2 and Total hardness of 2.6 and water quantity should be 40723.8 m³/d. Additionally, The entire amount necessitated for the proposed Gaharwa WTP is 632,950.1957 USD. Eventually, Gaharwa Lake can be utilized as ensues to water scantiness in the Bugesera district. This research will greatly contribute to the lives of Rwandan people as well as Country Vision.