Collect waste water from ponds to mature (Maturation pond) pond that 1 of the wastewater treatment plant of Khon Kaen University and polluted water from entering into the cement pond size 40 cm radius 50 cm high, with a volume equal to about 10000 removed cm. (Enter until the water in the pond has a height of approximately 40 cm) The number of 15 wells.
การแปล กรุณารอสักครู่..