Hong Kong Regulations

SEWAGE SERVICES (TRADE EFFLUENT SURCHARGE) REGULATION - SECT 2

Interpretation

In this Regulation- "COD" (化學需氧量) means Chemical Oxygen Demand;

"CODs" (化學需氧量(沉澱)) means Chemical Oxygen Demand-Settled which is
a measurement of the oxygen demand of the water soluble portion of a sample of
trade effluent after gravity separation of the nonsoluble portions by the
sample being left sitting still for 60 minutes;

"CODt" (化學需氧量(總數)) means Chemical Oxygen Demand-Total which is a
measurement of the oxygen demand of a total sample of trade effluent without
allowing the time necessary to allow gravity separation of the sample;

"strength of domestic sewage" (住宅污水濃度) means sewage where CODt
equals 500g/m3 and CODt-CODs equals 150g/m3;

"water control zone" (水質管制區) means any part of Hong Kong declared to
be a water control zone under section 4 of the Water Pollution Control 
Ordinance ( Cap 358). (Enacted 1995) "COD" (化學需氧量)

"CODs" (化學需氧量(沉澱))

"CODt" (化學需氧量(總數))

"strength of domestic sewage" (住宅污水濃度)

"water control zone" (水質管制區)