WSP02383

• File Number: 8271.300
• Description: Salinity
• State: CO
• Basin: Colorado Mainstem
• Date: 12/1/1982
• Author: USDOI/BOR
• Title: Preliminary Study of Solar Ponds for Salinity Control in the Colorado River Basin
• Water Supply Pro - Doc Type: Publication

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CONTENTS

Page

Acknowledgments ........,.................,............................... ii

Summary ..................................'...,.......................... 1
Conclusions. . . . . . . . .'. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . , . . , . . . . . . . . . . . . . . . . 1
Recommendations .. . . . . . . . . . . . . . . , . . . , . , . , . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . 3

Background .,.,...,.,'..,................................................. 3

Candidate site characteristics ....................,......,................... 4

Thermal and electric power conversion ...................................... 6
Performance analysis. . . ., . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . 6

Mass balances .....'.................................................... 10
Assumptions .... " . . . . . . . . . . . . . . . . . . , . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10
Computational procedures ............................................. 12

Results , . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . .. 12

Solar-pond-coupled desalination ............................................ 14

Reverse osmosis ........................................................ 15
Horizontal-tube. multiple-effect distillation (HTMEDI ,....................... 16
Potential improved desalination technologies .............................. 20
Low-pressure. three-stage RO .....................,................... 20
Multiple-effect, wiped-film evaporator .................................. 20
Other potential improvements...,....... ...' ... .... .................... 21

Economic analysis ..,..................................,...........,....... 21
Single-purpose applications ..........................,................... 22
Electric power generation only/no desalination.. ...... .................. 22
Desalination only (single purpose) ..............,....................... 25
Multipurpose project .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 27

Bibliography. .. . . . . ., . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . , . . . . . . . . . . . .. 32

Appendixes

A-Solar pond brine properties and pretreatment options ................... A 1

B-Solar pond liners. . . . . . . . . . . . . . . . , . . . . . .. . , . . . . . . . .. . . . . . . . . . . . . . . . . .. B 1
C-SOLPOND input parameters .......................................... C1
D-Sample SOLPOND output..................... ......... ............... D1
E-Single-purpose desalination cost data .................................. E 1

TABLES

Table

1 Continuous thermal and electric power output at Danby Dry Lake ......... 8
2 Solar pond performance results for Danby and Sevier
Dry La~es (comparison between SOLPOND and
JPL's computer program) ............,.......,....................... 8
3 Solar pond expansion rates ............................................ 13

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