MBR SLUDGE TANKS
06 - 08 - 24

Project: MBR Sludge Tanks

Project Overview:  Fabricate and install two new stainless steel 316L sludge collection tanks for MBR 1 & 2 and to convert the existing Exhaust Gas Eco. wash tank into a Sludge collection tank for the collection of MBR 3 sludge.

Project Length: 4 months

Project Location: Sailing project onboard a cruise ship

Project Highlights:

MBR Sludge Tank 1 

The new Stainless Steel Sludge collection tank shall be fabricated onboard and installed on deck 1 portside between frames 252 – 256 underneath the membrane  bioreactor tank No.1 located on deck 2.

  • New stainless steel 316L pipework and fittings shall connect to the existing desludge line running from the existing desludge pump on deck 2.
  • This pipework shall connect to the newly fabricated stainless steel sludge collection tank.
  • The new sludge collection tank shall consist of the below:-
  1. Screwed Union Sight Glass, 316L SS Base / 304 SS Nut – Viewing Diameter 150mm with wiper and light.
  2. Sounding line connection.
  3. Manhole access.
  4. Gooseneck vent.
  5. Low level Molbrey Float Switch
  6. High level Molbrey Float Switch
  • The discharge shall run from the tank to the B50 X 50HC Sewage discharge pump.
  • It shall then run and connected back into the common overboard discharge line.

MBR Sludge Tank 2

The new Stainless Steel Sludge collection tank shall be fabricated onboard and installed on deck 1 portside between frames 252 – 256 underneath the membrane  bioreactor tank No.1 located on deck 2.

  • New stainless steel 316L pipework and fittings shall connect to the existing desludge line running from the existing desludge pump on deck 2.
  • This pipework shall connect to the newly fabricated stainless steel sludge collection tank.
  • The new sludge collection tank shall consist of the below:-
  1. Screwed Union Sight Glass, 316L SS Base / 304 SS Nut – Viewing Diameter 150mm with wiper and light.
  2. Sounding line connection.
  3. Manhole access.
  4. Gooseneck vent.
  5. Low level Molbrey Float Switch
  6. High level Molbrey Float Switch
  • The discharge shall run from the tank to the B50 X 50HC Sewage discharge pump.
  • It shall then run and connected back into the common overboard discharge line.

MBR Sludge Tank 3

For the collection of the sludge from MBR 3 the redundant exhaust gas eco. wash tank shall be utalised.

  • New stainless steel pipework shall branch off the existing common overboard line before the existing automatic valve near frame 96
  • The new pipework shall connect into the existing exhaust gas eco. wash tank
  • A new screwed Union Sight Glass, 316L SS Base / 304 SS Nut – Viewing Diameter 150mm with wiper and light shall be installed to the tank
  • New Low level Molbrey and High level float switches shall be added to the tank
  • The pipework shall then run to a new B50 X 50HC Sewage discharge pump and then run back to the common overboard discharge line after the existing automatic valve.

Electrical Scope

MBR Sludge Tank 1:

  1. Installation of Low level Molbrey Float Switch into new Sludge Tank for MBR 1.
  2. Installation of High level Molbrey Float Switch into new Sludge Tank for MBR 1.
  3. Installation of Pump Control Starter Panel for the new Pump for MBR 1.
  4. Installation of new 25A Circuit Breaker for the supply to the Pump Control Starter Panel.
  5. Installation of any containment required for supports for cabling.
  6. Install and terminate 4c 4mm supply cable from Power Board to Pump Control Starter Panel.
  7. Install and terminate 4c 2.5mm cable from Pump Control Starter Panel to new Pump.
  8. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to Low Level Float Switch.
  9. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to High Level Float Switch.
  10. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to Low ECR.

MBR Sludge Tank 2:

    1. Installation of Low level Molbrey Float Switch into new Sludge Tank for MBR 2.
    2. Installation of High level Molbrey Float Switch into new Sludge Tank for MBR 2.
    3. Installation of Pump Control Starter Panel for the new Pump for MBR 2.
    4. Installation of new 25A Circuit Breaker for the supply to the Pump Control Starter Panel.
    5. Installation of any containment required for supports for cabling.
    6. Install and terminate 4c 4mm supply cable from Power Board to Pump Control Starter Panel.
    7. Install and terminate 4c 2.5mm cable from Pump Control Starter Panel to new Pump.
    8. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to Low Level Float Switch.
    9. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to High Level Float Switch.
    10. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to Low ECR.

MBR Sludge Tank 3:

  1. Installation of Low level Molbrey Float Switch into new Sludge Tank for MBR 3.
  2. Installation of High level Molbrey Float Switch into new Sludge Tank for MBR 3.
  3. Installation of Pump Control Starter Panel for the new Pump for MBR 3.
  4. Installation of new 25A Circuit Breaker for the supply to the Pump Control Starter Panel.
  5. Installation of any containment required for supports for cabling.
  6. Install and terminate 4c 4mm supply cable from Power Board to Pump Control Starter Panel.
  7. Install and terminate 4c 2.5mm cable from Pump Control Starter Panel to new Pump.
  8. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to Low Level Float Switch.
  9. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to High Level Float Switch.
  10. Install and terminate 2x2x0.75mm cable from Pump Control Starter Panel to Low ECR.
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