Transfer Station Design
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Laura J. Weber President The Lydia Company Serving our clients to build a better tomorrow
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Transfer Station Design. Laura J. Weber President The Lydia Company Serving our clients to build a better tomorrow. What is the difference between these two containers?. Presentation Summary. Types of Transfer Stations Designing for the Needs of Your Community SRMT Example - PowerPoint PPT Presentation
Transcript of Transfer Station Design
Laura J. WeberPresident
The Lydia CompanyServing our clients to build a better tomorrow
Laura J. Weber The Lydia Company
What is the difference
between these two containers?
Serving our clients to build a better
tomorrow
Laura J. Weber
Types of Transfer Stations Designing for the Needs of Your
Community SRMT Example Economics of Transfer Station Design
The Lydia CompanyServing our clients to build a better
tomorrow
Laura J. Weber
Many factors affect design Tons/day to flow through Waste storage Processes to recover
material or prepare (i.e. shred or bale) for shipment
Type of vehicles – collection & transfer
The Lydia CompanyServing our clients to build a better
tomorrow
Laura J. Weber
3 Sizes Small – less than 100 tons/day Medium – 100-500 tons/day Large – more than 500 tons/day
The Lydia CompanyServing our clients to build a better
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Laura J. Weber
Factors Impacting Size Total tons/day of material to flow through Size & capacity of collection vehicles using the facility Length of time materials at the facility (storage
space) Loading & unloading times Peak conditions; i.e. maximum # of vehicles in facility
at once (design for this) Type of processing to occur Transfer trailer capacity & waiting time for loading Hours of station operation
The Lydia CompanyServing our clients to build a better
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Laura J. Weber
Direct-Discharge (Direct Dump) Consist of drop off area where materials
are placed directly in the collection container
Two design types: Two operating floors – upper & lower
Materials are placed into hoppers on the upper level and fall into container on the lower level
Open-top containers Materials are placed directly into containers
The Lydia CompanyServing our clients to build a better
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Laura J. Weber The Lydia Company
Examples of Direct-Discharge Stations
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Laura J. Weber
Platform/Pit Consist of an upper & lower level Upper level is a tipping floor where
materials are dumped Lower level contains open-top trailers &
materials are pushed into them from the upper level
Open top trailer can be either compacting or non-compacting
The Lydia CompanyServing our clients to build a better
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Laura J. Weber The Lydia Company
Platform/Pit Designs
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Laura J. Weber The Lydia Company
Platform/Pit Designs
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Laura J. Weber The Lydia Company
SRMT Transfer Station
Combination of Direct Dump & Pit/Platform
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Advantages & Disadvantages of Types There are many The Decisions Maker’s Guide to Solid
Waste Management provides a good list, Chapter 4 page 4-18
http://www.epa.gov/epawaste/nonhaz/municipal/dmg2/chapter4.pdf
The Lydia CompanyServing our clients to build a better
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Laura J. Weber
Determining what type of transfer station you need is dependent upon many factors
First, define the problem that the transfer station will solve
The Lydia CompanyServing our clients to build a better
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Laura J. Weber
Ask these questions What are the community needs & desires? What types & quantities of materials will
you collect? Will process (i.e. baling & shredding) any materials at your facility?
What is your service area? Will you accept both residential &
commercial wastes or just one or the other? What are other local tip fees and can your
facility be competitive? The Lydia Company
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Laura J. Weber
Questions Con’t What will be your days & hours of
operation? What types of trucks & size will use your
facility? What types of transfer vehicles will you use?
Do you really need a transfer station? Experts agree that the disposal sites must be
at least 10-15 miles from the facility before a transfer station is economically justified.
The Lydia CompanyServing our clients to build a better
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Laura J. Weber
Conducting feasibility & waste characterization studies are the best methods for gaining answers to the questions.
SRMT ExampleThe Lydia Company
Serving our clients to build a better
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Laura J. Weber
1995 Feasibility Study Door-to-door surveys were performed
with both residents and businesses Established that the community wanted
a Tribally owned & operated solid waste system
People were using open burning & dumping because they didn’t like using non-reservation haulers
The Lydia CompanyServing our clients to build a better
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Laura J. Weber
Methods Used for Waste Characterization Pounds/person/household Volume-based waste audits Survey questions in feasibility study
These methods estimated SRMT’s total waste generation rate = 10 tons/day
Current tons/day at transfer station = 12-15 tons/day
Transfer Station is designed for 25 tons/day
The Lydia CompanyServing our clients to build a better
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Laura J. Weber
Factors to consider when developing design costs Engineering work Personnel costs Infrastructure costs, i.e. buildings, roads,
property, site preparation work, construction, soil borings, etc. etc.
Full Cost Accounting (FCA) Method is best – will discuss more in session 7
The Lydia CompanyServing our clients to build a better
tomorrow
Laura J. Weber The Lydia Company
Laura J. WeberPresident
The Lydia Company
mConnect With Me:
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www.linkedin.com/in/laurajweber
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