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Mercury
Work Group
Phase II Reports >> Technology Identification Subgroup Report
Facilities Loadings
| Pretreatment Manual |
Tech. Identification
Hg Management Guidebook | Mercury Products
Database
For more
information, contact David Eppstein by email at
deppstein@masco.harvard.edu,
or by calling 617-632-2860.
I. INTRODUCTION / OBJECTIVES
The
Technology Identification Subgroup was formed under Phase II of
the MWRA/MASCO Mercury Work Group, End-of-Pipe Subcommittee,
primarily to identify the technologies with a reasonable
potential to remove mercury from a wastestream and to produce
effluent concentrations below that being achieved using only
source reduction techniques. The Subgroup was assigned to work
with vendors of promising pretreatment technologies to help
determine the feasibility of each technology to produce low
effluent mercury concentrations. The Subgroup would also ask the
vendors to provide estimates of full scale system spatial
requirements and capital and operating costs. To achieve these
goals, the Subgroup decided to ask identified vendors to
participate in a Bench-scale Feasibility Testing Project in
which the mercury removal technologies were applied to samples
of clinical laboratory wastewater.
This
report summarizes the work and findings of the Technology
Identification Subgroup. The discussions include descriptions of
types of hospital wastewater, a hospital wastewater
characterization study, species of mercury in wastewater,
candidate mercury removal processes, and the Subgroup’s
Bench-scale Feasibility Testing Project. The testing project
discussion includes summaries of interviews with pretreatment
technology vendors, testing project protocols (including
wastewater selection, analytical testing, and quality assurance
and quality control measures), and testing project results.
The
Technology Identification Subgroup believes that a review of the
information contained in this Report is a good first step for a
facility to take when investigating mercury pretreatment
systems. However, please note that the Subgroup did not perform
an exhaustive search for mercury removal technologies, nor does
it endorse any of the vendors that participated in the project.
It also must be understood that the feasibility tests were
performed on samples of a particular wastestream. Because this
project focused on the technical feasibility of the removal
technologies, vendor cost estimates must be considered as
preliminary only. Individual vendors should be contacted
directly for more information about their technologies and about
further feasibility and treatability testing.
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