STP & ETP

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  STP     Sewage treatment platn (residential & commercial) ETP     Effluent treatment plant (industry) COD     Chemical oxygen demand (soluble & insoluble organic compound) (2hr to 3hr) (mg/l) BOD     Biochemical oxygen demand (organic compound) (3days to 5days) (mg/l) KEY POINTS: Outlet of STP 50mg/l Biproduct of anaerobic digestion is H2S & NH3 To reduce stink smell use ozone 

MOSQUITO BAT

MOSQUITO BAT



The major component present in the mosquito bat are:

  • Capacitor
  • Resistor
  • Diode
  • Rechargable Battery 4V
  • Key
  • Switch
  • LED
  • Transistor
  • Transformer 4/200V


 

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