Friday, August 7, 2009

NO3 vs CL

NO3 vs CL

Chlorine

  • Highest: Pond because there are fishes inside the pond. Fish food particles, fish waste in the pond and chlorides in surface and groundwater are leached from various rocks into the pond by weathering contribute to the increase of chloride.
  • Second highest: GreaseTrap because there are food particles, cosmetics, hand soap, cleaning gel consisting of chloride ions.
  • Tap water has more chloride elements because water contains chloride. A normal adult human body contains approximately 81.7 g chloride.
  • At the C-shaped tank, only C-site 5 has the most Chloride as it is the endpoint for all the C-shaped tanks before flowing into the outlet so it gathers lots of chemical elements there.
Nitrate
  • Highest: GT because it consists of cosmetics(silver nitrate,sodium nitrate),cleaning gel, oil,etc.
  • The fishes in the c-shaped tank produce waste which increases the nitrate levels.
  • Both Cs1,Cs2 are the higher in the C-shaped tank because most of the Nitrate come from GT and the plants on subsurface can trap little NO3 so there is large amount flow to the C-shaped tank.
  • Cyperus papyrus(site1) can uptake some nutrients of NO3 but it is widely used as ornamental plant for water garden. Plant at site 2 ,Juncus Effucus, can filter suspended solids, so it can’t really absorb NO3.Cs3 has no nitrate due to some external reason as there are fishes inside tap water has quite a lot of nitrates.
  • Maximum allowable level of nitrate-nitrogen in public drinking water is 10 ppm.