Water Supply ; Sewerage ; Purification of Water ; Sewage Purification And Disposal ; Irrigation
Water Supply ; Sewerage ; Purification of Water ; Sewage Purification And Disposal ; Irrigation
International Correspondence Schools
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The term is, however, also loosely used to denote the appli- cation of sewage to arid, sandy areas that by irrigation can \ be made to yield large crops. The sewage is really purified by filtration, but the agricultural results are so in evidence that the process is described as broad irrigation. A high degree of purification may be accomplished in this manner, but the method is open to the following objections: (1) the difficulty of securing suitable land near centers of population; (2) local ...opposition and high prices generally demanded for the required land; (3) the failure, under these conditions, of making the cultivation of crops remunerative; (4) the difficulty of harmonizing the growing of crops with the demands of sewage purification at all seasons; (5) the expense of pumping sewage to remote and elevated areas. 57. Opposite Requirements of Sewage Disposal and Agriculture. — The purification of sewage by irriga- tion demands a constant and regular application of the sewage to some area.
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