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 
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AIR CONDITIONER

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 AIR CONDITIONER







The major component present in the Air Conditioner are:

  • Evaporator Coil
  • Condesor Coil
  • PCB unit
  • Room Sensor
  • Coil Sensor
  • Blower Fan
  • Compressor
  • Condensor Fan
  • Dual Start Capacitor
  • Relay
  • Pressure Switch

Example circuit diagram of DAIKIN split AC





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