SISTEM PENGANGKATAN AIR DENGAN POMPA HIDRAM UNTUK DISTRIBUSI AIR BERSIH PADA SENDANG COYO KABUPATEN GROBOGAN

Abstract

Pulo Kulon District is known as a dry areas during the dry season, to fullfill the water needs , people buy some water from Spring Coyo water source with water tank trucks for Rp. 125,000 per tank. The water needs in the tourist site Sendang Coyo has been filled with diesel fuel pump. The water is provided by diesel pump has been used for need of water in toilet, mosque, cafeteria and watering teak tree seedlings. The purpose of research is to design the Hydram Pump, what kind of Hydram Pump and what the characteristics that is used to pump water at Sendang Coyo and to know the results of pumping applications of clean water in Spring Coyo tourist site. The first process of this research was seeked the research permit on Perhutani Unit I Central Java, and then mapping the location to determine the effective position for the pump and measure the most optimal head. Measuring the flow rate using flowmeter and calculated the water discharge on the water gate that will be use. Planned the discharge at the Sendang Coyo site to determine the water pumping capacity. The research process is assisted by local people who have joined in the organization LMDH (Forest Village Community Institution) Jati Lestari. Total head of the Hydram Pump is 1.535 m, and the net head is 1.0385 m. The diameter of the drive pipe is 2 "(5.08 cm) with 12.5 m in length. Air chamber diameter is 3 "(7.62 cm) with height of 60 cm. The Body of Hydram pump is 2 "(5.08 cm). Outlet pipe diameter is ½� (1,27 cm). The results of testings show that, the optimum weight of waste valve is 300 grams, the optimum length of the valve step is 0.01 m, with an optimum pumping height is 6m and the highest efficiency is 51%. Maximum height of the water pumping is 9m. Some tests with the heigt of pumping at 9.5 m, the water can rise to the top but the flow is not constant. The output pumping discharge is 0.0477 l / s or 4121.28 l / day at the 6m height. This result doesn�t fulfill the discharge requirement 6070.8 liters / day. The specifications of Hydram Pump can not fulfill the water needs of the tourist sites Sendang CoyoKabupaten Grobogan. It is required the larger capasicity of Hydram Pumps or installed two or more Hydram Pumps