The wastewater treatment plant for pine city discharges 1 × 105 m3/day of treated waste to the pine river. immediately upstream of the treatment plant, the pine river has an ultimate carbonaceous biological oxygen demand (cbod) of 2 mg/l and a flow of 9 × 105 m3/day. at a distance of 20 km downstream of the treatment plant, the pine river has an ultimate cbod of 10 mg/l. the state’s department of environmental quality (deq) has set an ultimate cbod discharge limit for the treatment plant of 2,000 kg/day. the river has a velocity of 20 km/day. the cbod decay coefficient is

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

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