8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

1/14

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

2/14

Goals for Intake/Outfall Improvement

OVERVIEW

. eawa er ys em ass ca on

2. General Engineering Methodology

. y rau c ro ems an o ut ons4. Typical Intake Layouts

5. Goals

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

3/14

Goals for Intake/Outfall Improvement

1. Seawater System Classification

Seawater Supply

Pretreatmentand

Pumping

Return

Pumping Cooling Water and/or Br ine

Desal. PLANT

Return

(SW Consumer)

O en Channel Buried Pipes/Culverts Tunnel

Combinations of above

Open Pit/ wet Well

Closed Piping

Buried Pipes/Culverts Tunnel Combinations of above None direct outfall

None (direct intake)

Screening Filtration

Closed Piping Combinations None (gravity flow)

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

4/14

Goals for Intake/Outfall Improvement

2. General Engineering Methodology

LocationLayout and

Construction

INTERRELATED

Tender Requirements

Risk Assessmentand Contro l

Seawater Intakeand Outfall

ENGINEERING

ITERATION

PROCESS !

ProcessCosts

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

5/14

Goals for Intake/Outfall Improvement

Climate (Seawater and Air Temperatures, Rainfall, Wind, Ice)

2. General Engineering Methodology

Seismic Activity Water Quality (Suspended Solids, Chemical Composition and Properties) Tide Levels Soil Conditions a yme ry Environmental Regulations (Marine Life, Chemical Properties of Discharges, Noise) Neighborhood (Other SW Consumers, Industrial Area, nearby Villages) Marine Recirculation (Wind, Tidal Currents, Location of Intake/Outfall Points, etc. Oil S ill Warnin and Protection S stem Fish Protection System Sedimentation System Seawater Pre-Treatment (Chlorination, Screening, Filtering) Seawater Pumping (Flow, Pressure, NPSH, Approach Flow Conditions, Hydraulic Transients) ons ruc a y ea er, aves, o , a er ep , ze an ype o ruc ures Redundancy and Availability Effects during Construction (e.g. suspended solids)

Other Main and Auxiliary Equipment (Crane, Ventilation, I&C, etc.) Material Selection and Corrosion Protection Time Schedule (Construction Time, Equipment Delivery Time) Damages during Construction (Experience of (Sub-) Contractor, Inherent Safe Design) Damages during Operation (e.g. Ship Traffic, Wave Action) Protection against un-authorized Access

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

6/14

Goals for Intake/Outfall Improvement

2. General Engineering Methodology

COSTS

CAPEX Analysis of Capital Expenditures

OPEX Analysis of Operational Expenditures (over Plant Life Time, Contract Duration)

Analysis of

PLANT LIFE CYCLE COSTSon a case by case basis

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

7/14

Goals for Intake/Outfall Improvement

3. Hydraulic Problems and Solutions

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

8/14

Goals for Intake/Outfall Improvement

3. Hydraulic Problems and Solutions

Flow Optimization

Through Physical

Tests

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

9/14

Goals for Intake/Outfall Improvement

3. Hydraulic Problems and Solutions

Sink and Sunk Effects

Transient Flow Condit ions, Up- and Down-Surge

ssue n sys ems w ong o s ore p pes or cu ver s an w pumps oca e ons ore

Severe flooding possible after emergency shut down of pumps

Potential dry running of pumps dur ing pump start-up phase

To be careful ly analysed in design phase in order not to render pump s tation

operation imposs ible

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

10/14

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

11/14

Goals for Intake/Outfall Improvement

4. Typical Intake Layouts

Travelling Band Screen Installation Drum Screen Installation

Seawater Screening and Pumping Plants for Medium to Large Scale Installations

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

12/14

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

13/14

Goals for Intake/Outfall Improvement

4. Typical Intake Layouts

Seawater Intake Arrangement with Integrated Air Backwash Filters

GFT Desalination GmbHDr.-Ing. Hartmut Rosenberger

8/13/2019 Goals for Seawater Intake, Outfall and Pretreatment Improvement for Membrane and Thermal Desalination Systems

14/14