Moho Nord

Client:  Hyundai Heavy Industries Co. Ltd. (HHI) 

Process: Seawater Coarse & Ultrafiltration 

Country:  Congo 

Contract Description:  Supply of Seawater Coarse, Ultra-filtration (UF) Packages 

Contract Start Date: November 2013 

Contract Completion Date: January 2015 

UF Capacity:  211,320 BPD (33,600 m3/day) 

Coarse Permeate Output: <100 micron particles at 98% Efficiency 

UF Permeate Output: :  0.0lµm & 5DI (Silt Density lndex) : <2.5




Project Description:

EPC supply of water treatment technology skids, coarse filtration, and Ultrafiltration with a capacity of 211,320 BPD (33,600 m3 /day) to be installed on the FPU topsides to provide the specified seawater treatment quality to the water injection system.


Project Scope:

The Ultrafiltration Package comprises a single-lift UF membrane skid with integral CIP System. Six UF membrane racks, each rack comprising three multi-element vessels (MEV’s), are provided to allow for 1 rack on backwash and 1 spare, which can be taken offline for maintenance. The fine filtered seawater (0.03µm) from the UF system provides the feed to the Water Injection Pump system. 

The UF Package also includes a membrane Clean-in-Place (CIP) unit and a Unit Control Panel.



Process Description:

Pressurised seawater is supplied to the UF system from upstream coarse filters.  UF hollow fibre membranes, installed in a multi-element housings, are arranged in multiple racks with back-flushing performed using treated water from the downstream UF Backwash Tank.  In addition, provision for hypochlorite dosing is provided to facilitate clean-in-place membrane arrays.

Filtered water from the UF Package provides feed water to the downstream water injection system.