.7 definitions 1.7.1 reservoir refers to raw water reservoirs of Northern region industrial estate. 1.7.2 the floating island constructed wetland treatment system means a floating Island built from local materials and the use of the vetiver plant is used in the treatment.1.7.3, phosphorus and nitrogen reduction performance, good SEO means of vetiver to reduce nitrogen, phosphorus and formaldehyde in water basin as a percentage, as follows:
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