Agricultural pollution and lake basin water quality management [Laguna lake in Philippines].
1982
Yao K.M.
The results of a water quality management study of the lake basin indicated that in spite of total population of 1.8 million at the time of the study and intensive industrial development along the lakeshore, organic pollution from agricultural sources far exceeded that from domestic or industrial effluents. The lake was highly euphotic with algal counts sometimes exceeding 500,000 per cubic cemtimeter in lakes water samples. Nitrogen was the limiting factor and rice paddy runoff was a significant source of hitrogen inflow to the lake. Results of experimental studies to convert organic pollutants and waste nutrient into algae through the use of high-rate stabilization ponds and to develop rice paddy irrigation practice to minimize nitrogen inflow into the lake were both promising.
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