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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CEILING FAN, BELT DRIVEN COMPRESSOR PUMP & CENTRIFUGAL REGENERATIVE PUMP

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In this topic we are going to see the equivalent circuit diagram, terminal connector/box, selection of starting capacitor, selection of running capacitor, some standards available in market, and spare parts.

CEILING FAN





BELT DRIVEN COMPRESSOR PUMP





CENTRIFUGAL REGENERATIVE PUMP






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