Marine Gray Water Treatment Device

Marine Gray Water Treatment Device

1. Marine Gray Water Treatment Device Preface:

    The marine gray water treatment device belongs to the key device for prevention of pollution form ships on seas and oceans, according to the revised Annex IV of the International Convention of the Prevention of Pollution (MARPOL 73/78). This plant is applicable to treat the sewage, which means human body wastes and the wastes from the toilets on vessels and which is also called "black water", to meet the effluent standard of IMO MEPC.159(55), and discharge the effluent overboard.
    This device is according to the resolution MEPC.159(55) enacted on 13rd Octomber 2006. The convention (MARPOL73/78) provides that all STPs installed on or ater 1st January 2010 should meet the resolution MEPC.159(55) and MEPC.227(64).

    This device has obtained one item of Authorized Patent and one item of Paratical new patent, meanwhile has been obtained the Type Approval of CCS and IMP circular in April 2009, and it in February 2011 by Germanischer Lloyd (GL) type approval certificate MED made, while providing ABS, DNV, BV, RS and other classification societies certificate.

    This plant is apply to install on the below vessels later 1st, January, 2016:
    (1) All areas of the vessel (except passenger vessle);
    (2) The passenger vessel beyond of the Annex IV of the International Convention of the Prevention of Pollution (MARPOL 73/78).

2. Marine Gray Water Treatment Device Rules and Effluent Standards:

	IMO MEPC.159(55)	IMO MEPC.227(64）	USCG	Alaska
TSS        (mg/l)	35	≤35Qi/Qe	150	30
BOD5      (mg/l)	25	≤25Qi/Qe	NR	30
COD       (mg/l)	125	≤125Qi/Qe	NR	NR
coliform (per 100ml)	100	100	200	20
PH	6~8.5	6~8.5	NR	6~9
Residual chlorine (mg/l)	＜0.5	＜0.5	NR	10
Ammonia Nitrogen (mg/l)	NR	NR	NR	10
Total Nitrogen (mg/l)	NR	≤20Qi/Qe (or 70% scalage at least)	NR	NR
Total Phosphorus (mg/l)	NR	≤1.0Qi/Qe (or 80% scalage at least)	NR	NR

3. Marine Gray Water Treatment Device Warning:

(1) The plant cannot be installed in explosive atmosphere.

(2) Paint tar epoxy as that coat on inside surface of the tank, welding should not be worked on the surface of the tank.

(3) It needs clear space at front of device 600 mm and right side of device 300 mm to allow for operation and maintenance of the device.

(4) Any anti-virus agent can't be used in the progress of device.

4. Marine Gray Water Treatment Device Severl Class Certificates Supply:

BV, ABS, DNV, GL, LR, RINA, NK, USCG, CCS class certificates and etc.