SWCM sewage treatment plant

It is designed according to the new IMO MEPC159(55).CCS,EC,BV,ABS etc class certificate can be offered

SWCM Sewage Treatment Plant belongs to the key devices for prevention of pollution from ship in seas and oceans according to the revised Annex IV of the International Convention of the Prevention of Pollution (MARPOL 73/78).The resolution MEPC.2 (VI) adopted on 3 December 1976 is the present guidelines on implementation of effluent standards and performance tests for STP.which is called "old standards".This device is according to the resolution MEPC.159(55) enacted on 13 October 2006,which is called "new standards".The convention (MARPOL 73/78) provides that all STPs installed on board on or after 1 January 2010 should meet the resolution MEPC 159(55).

Discharge standard              Convention	IMO Old standard	IMO New standard	USCG	Alaska
TSS (mg/l)	50	35	150	30
BOD5 (mg/l)	50	25	No NR request	30
COD (mg/l)	No NR request	125	No NR request	No NR
Coli form (pcs/100ml)	250	100	200	20
PH	6~9	6~8.5	No NR request	10
Chlorine (mg/l)	NR(as low as possible)	0.5	No NR request	10
Test days	10	16	10	30

SWCM sewage treatment plant