PDF - Aqua Treatment Technologies

The AQUA Wetland System (AWS) for treatment of
3,600 litres per day of milk house washwater &
manure pad leachate water.
Mark & Rachel Brubacher
3633 Lawson Line
RR #3 Wallenstein, ON
N0B 2S0
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
AWS operating principle
The AQUA Wetland System (AWS)
consists of three cells, each lined with
an impermeable synthetic liner. Each
cell contains a sand/grave medium and
cattail plants (typha sp.). Wastewater
is applied to the top of the first cell in
series via buried ‘summer’ and ‘winter’
distribution manifolds. Water from the
bottom of cell # 1 is collected and then
applied to cell # 2 in the same
manner. Likewise, water from cell # 2
is applied to the top of cell # 3. The
treated water is then discharged from
the system. Winter time operation is
accomplished via buried ‘winter’ dosing
manifolds and in summer via ‘summer’
dosing manifolds located on the cell
AQUA Treatment Technologies Inc.
surface.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
Treatment process
Physical, chemical, and biological processes combine
within the AWS to remove contaminants from
wastewater. Treatment occurs as the wastewater
passes through the AWS sand medium and the plant
rhizosphere. A thin aerobic film around each root hair
is aerobic due to the leakage of oxygen from the
rhizomes, roots, and rootlets of the cattail plants.
Decomposition of organic matter is facilitated by
aerobic and anaerobic micro-organisms present.
Microbial nitrification and subsequent denitrification
releases nitrogen as gas to the atmosphere.
Phosphorus is co-precipitated with iron, aluminum, and
calcium compounds located in the root-bed medium.
Suspended solids are filtered out by the sand medium
of the AWS and subsequently decomposed. Harmful
bacteria and viruses are reduced by filtration and
adsorption by biological films on the sand media.
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
The AWS system consists of four main
components:
3.
4.
5.
6.
Manure solids settling tank
Flow balancing / pre-treatment pond
AWS treatment system
Sub-surface disposal trenches
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
Flow from manure storage facility is calculated using the following data:
 pad size
 45 year average yearly rainfall
31m X 31m
0.773 m
Therefore:
Pad area =
Maximum yearly rainfall
33 m X 31 m:
= 961 m2
= 0.773 m
Maximum expected yearly flow from manure storage facility:
742 m3 or 163,436 gallons or 2,032 L/day
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
Data used for pond design:
Pond storage volume (arbitrary): ~ 50% of yearly maximum rainfall
•
•
required pond storage area:
742m3 / 2
Pond size & volume: 18m X 18m x 1.2m deep
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
= ~ 371 m3
= 388 m3
Data used for AWS design:
AQUA Wetland System (AWS)
• estimated flow from milk house
• estimated flow from manure storage
• total daily calculated flow
900 L/day
2,032 L/day
2,932 L/day
•
•
•
•
3,600 L/day
80 L/m2/day
45 m2
3.7 m X 3.7m
daily design flow:
hydraulic Loading rate:
3,600 L/day divided by 80 L/m2/day =
3 AWS cells required, each cell measures
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
Disposal trenches
Treated water is discharged sub-surfacely, into a series of Shallow Buried Trenches
containing 4” perforated Big ‘O’ drainage pipe.
The design criteria used are taken from the Section 8.7.3.1 of the Ontario Building
Code:
L = Q/40
where:
L = length of pipe in metres
Q = daily design flow
40 = constant
L = 3,600 / 40 = 90 m
The disposal trenches consist of 3 trenches, each trench is 30 m long & 2m O/C
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
• Construction of 3 cell AWS
• Cells are lined with 30 mill EDPM liner
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
• View of ‘winter time’ flood manifolds
• Water is moved from cell to cell via submersible pumps
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
• ‘ Winter ’ flood manifolds are buried with a layer of gravel
• Concrete sand is spread on top of gravel layer
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
• View of completed system
• Summer manifolds are visible
• Cattails will be planted in sand layer
Disposal trenches in field
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
• Pond is excavated 2’ in depth
• Excavated fill is used to create berms
• Finished pond is 4’ in depth
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
• Pond is lined with 30 mill PVC liner
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
• View of solids settling tank (green lid)
• Required to remove solids washed from manure
pad prior to entering pond
Manure pad
Settling tank
Influent from milk house
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com
Completed waste water treatment system
Manure storage
pond
AQUA Wetland System
Disposal trenches
AQUA Treatment Technologies Inc.
4250 Fly Road, Campden, Ontario LOR 1G0
Business: (905) 563-3778 • Mobile: (905) 327-4571
www.aqua-tt.com