A bench scale evaluation of organic substrates for use in constructed wetlands for the treatment of acid mine drainage

212 Pages·1994·6.8 MB·English

by  Schafer and Associates

S Schafer and
622*5 Associates
M26bseo A bench scale
1991 evaluation of
organic substrates
for use in
construe ted
Schafer & Associates
P.O. Box 6186
Bozeman, Ml 59715
[phone]
A BENCH SCALE EVALUATION OF ORGANIC
SUBSTRATES FOR USE CONSTRUCTED
IN
WETLANDS FOR THE TREATMENT OF
ACID MINE DRAINAGE
Submitted To:
Montana Department of State Lands
Abandoned Mine Reclamation Bureau
Helena, MT 59620
Submitted By:
mn
DOCUMENTS COLLECTION
Schafer and Associates
Bozeman, MT 59715 JUN 22 1994
MONTANA STATE LIBRARY
1515 E. 6th AVE.
HELENA, MONTANA 59620
September 1991
9,
MONTANASTATE LIBRARY
S622.5M26bseo1991C.1
Abenchscaleevaluationoforganicsubs
MAY 4 - 1994 3 0864 00085741 0
OCT 4 1995
SEP 111991
STATE LANDS
DISCLAIMER
The use of or reference to a product name in this report does not constitute an endorsement
of that product by Schafer and Associates or the State of Montana.

TABLE OF CONTENTS
INTRODUCTION
1.0 1
OBJECTIVES
2.0 1
MATERIALS AND METHODS
3.0
3.1 Materials 2
3.2 Methods 4
RESULTS
4.0
4.1 Effluent Analysis 8
4.2 Depth Sampling Chemistry 23
4.3 Lactate Addition 31
4.4 Substrate Metal Fractionation 32
4.5 Substrate Neutralization Potential 37
4.6 Hydraulic Conductivity 39
4.7 Observations 40
5.0 DISCUSSION 42
6.0 CONCLUSIONS 44
7.0 LITERATURE CITED 46
APPENDIX A COLUMN INFLUENT AND EFFLUENT CHEMISTRY
APPENDIX B MUSHROOM COMPOST AVAILABLE
PHYSICAL AND CHEMICAL CHARACTERISTICS
APPENDIX C COLUMN PORE WATER CHEMISTRY
APPENDIX D COLUMN SUBSTRATE METALS
FRACTIONATION RESULTS
APPENDIX E SUBSTRATE METALS
FRACTIONATION METHODS
i
Digitized by the Internet Archive
2014
in
https://archive.org/details/benchscaleevalua1991scha
LIST OF TABLES
Table 1. Mean AMD influent chemistry 2
Table 2. Substrate physical and hydraulic
characteristics 3
Table 3. Substrate pH, neutralization potential
and neutralization capacity 38
ii

LIST OF FIGURES
Figure 1. Typical column design employed
in substrate evaluation column study 5
Figure 2a. Substrate mean influent and effluent
pH and acidity/alkalinity concentrations 10
Figure 2b. Substrate mean influent and effluent
pH, Al and Fe concentrations 11
Figure 2c. Substrate mean influent and effluent
pH, Mn and Zn concentrations 12
Figure 3a. Substrate mean influent and effluent
pH and acidity/alkalinity concentrations 14
Figure 3b. Substrate mean influent and effluent
pH, Al and Fe concentrations 15
Figure 3c. Substrate mean influent and effluent
pH, Mn and Zn concentrations 16
Figure 4a. Substrate mean influent and effluent
pH and acidity/alkalinity concentrations 18
Figure 4b. Substrate mean influent and effluent
pH, Al and Fe concentrations 19
Figure 4c. Substrate mean influent and effluent
pH, Mn and Zn concentrations 20
Figure 5a. Substrate pore water Eh, pH, S2",
Al and Fe concentrations by depth 24
Figure 5b. Substrate pore water Eh, pH, S2",
Mn and Zn concentrations by depth 25
iii