Leak Detection for Landfill Liners Overview of Tools for Vadose

0,42

MB

Zone Monitoring

38

stron

2120

ID

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

2002

rok

TABLE OF CONTENTS

1. PURPOSE 3

1.1 Monitoring background 3

1.2 Overview of leak sensor options 4

1.3 Cost 5

1.4 Other types of leak detection 5

2. ESTABLISHED SENSORS 6

2.1 Electrical 6

2.1.1 Two electrode method 6

a. Advantages 7

b. Disadvantages 7

c. Example- Sandy Lane landfill 7

2.1.2 Electrode grid method 7

a. Advantages 7

b. Disadvantages 8

c. Example 1- Sandy Lane landfill 8

d. Example 2- WESTEC’s Electronic Leak Detection System 9

2.2 Diffusion hoses 9

a. Advantages 9

b. Disadvantages 9

c. Example- Siemens’ LEOS 10

2.3 Capacitance sensors 10

a. Advantages 11

b. Disadvantages 11

c. Example- Troxler’s Sentry 200 EMMS 11

2.4 Tracers 12

a. Advantages 12

b. Disadvantages 12

c. Example 1- Tracer Research Corporation’s Automatic Leak Detector 12

2.5 Electro-chemical sensing cables 13

a. Advantages 13

b. Disadvantages 13

c. Example 1- Noverflow’s SMART CABLE 13

d. Example 2- Raychem’s TraceTek 14

2.6 Other 15

a. Visual inspection 15

b. Wires in geotextiles 15

3. EMERGING TECHNOLOGIES 15

3.1 Geosynthetic Membrane Monitoring System 15

3.2 SEAtrace 17

3.3 FLUTe ideal system 18

3.4 Other 19

a. LIDAR 19

b. Acoustic monitoring 20

4. CONCLUSION 20

Appendix A- Overview grid 21

Appendix B- Contact information- available sensors 22

Appendix C- Contact information- emerging technologies 23

Appendix D- Web sites 24

References 25