Pipeline Transportation of Liquid Manure

D to transportation costs, manures can be utilized for their fertilizer value only when the hauling distance is short. However, manure cannot be applied indefinitely to a limited land area close to the manure production site without creating problems of water pollution (Patni and Hore, 1978) and excessive nutrient and salt accumulation in the soil. Therefore, using manure for crop production on large integrated farms requires a practical and economic method for long-distance transportation of manure. For liquid manure, pumping under pressure through a pipeline holds promise. The objective of this work was to develop and study a pumping system for transporting relatively thick dairy cattle liquid manure from the barns to a remote field storage. The manure was later plowed under in surrounding fields. The operational experience, operating problems, pumping suitability and pressure drop data are given here.