碳、氮、磷比例失调（碳量偏低）城市污水的脱氮除磷一直是个难题，为此采用SBR法处理广州地区低碳城市污水，研究了生物除磷效果及其影响因素。
Based on this, test was made on low carbon source urban wastewater treatment in Guangzhou region by using SBR process to investigate the effect and affecting factors of biological phosphorus removal.
水体富营养化条件是氮磷达到适合的比例，才会导致水华的爆发。
If nitrogen and phosphorus get to certain ratio in water, may cause the water eutrophication, then will lead to algae bloom outbreaks.
提倡测土配方施肥，科学掌握氮、磷、钾的配合比例与用量。
Fertilization to promote scientific grasp of nitrogen, phosphorus and potassium ratio and the amount of co-ordination.
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