1. CAPTURING the GREASE
MODEL CODE EDITION
Copyright
PDI 2012

2. Hydro Mechanical vs Gravity Grease Interceptors UPC, IPC How they work
Sizing
Installation
Grease
What it is
Were does it come from
What problems it cause
Copyright
PDI 2012

3. Copyright
PDI 2012

4. PDI Plumbing and Drainage Institute
The Plumbing and Drainage Institute (PDI) was formed in The organization developed the original performance requirements and certification program for Grease interceptors (Hydro mechanical Grease interceptors) and Water hammer Arrestors (Shock Arrestors)
Copyright
PDI 2012

5. PDI Plumbing and Drainage Institute
Our objective
Advancement of Engineered Plumbing Products
Research
Publish Standards
Education
Copyright
PDI 2012

6. PDI Plumbing and Drainage Institute
We also participate in the development of the model plumbing codes
UPC, IPC, NSPC
Copyright
PDI 2012

7. PDI Plumbing and Drainage Institute
Ashland Poly Traps
Watts Water Technologies
Bio-Microbics, Inc.
Zurn Industries
Canplas Industries, Ltd.
Mifab Inc.
Green Turtle Americas, Ltd.
B K Resources Inc.
Jay R. Smith Mfg.
Klinger’s Trading, Inc.
Josam
L&J Restaurant Manufacturing Import, Inc.
Highland Tank/Lowe Engineering
Prima Supply LLC/Atlantic Metalworks
L&J Restaurant Inc.
Town & Country Plastics Inc.
Rockford Separators
Triton Metals, Inc.
Thermaco
Wentworth Company
Wade Specification Drainage Products/Wade Hydromax®
Copyright
PDI 2012

8. PDI Plumbing and Drainage Institute
Web Site
Copyright
PDI 2012

9. .
Copyright
PDI 2012

10. PDI Plumbing and Drainage Institute Publications
PDI G101 Testing and Rating
PDI G102 FOG Sensing and Alarm
Guide to GREASE INTERCEPTORS:
Eliminating the Mystery
Copyright
PDI 2012

11. .
Copyright
PDI 2012

12. CAPTURE the GREASE
Copyright
PDI 2012

13. Grease Interceptor is a generic term representing a family of devices
Technology available
Grease Interceptor is a generic term representing a family of devices
Copyright
PDI 2012

14. Grease Interceptor Definition
Technology available
Grease Interceptor Definition
A plumbing appurtenance or appliance that is installed in a sanitary drainage system to intercept non petroleum fats, oil, and greases (FOG) from a wastewater discharge.
Copyright
PDI 2012

15. Technology available Gravity Interceptors Hydro Mechanical Interceptor
Grease Removal Device GRD
Fog Sensing and Alarm Devices
FOG Disposal Systems
Copyright
PDI 2012

16. GRAVITY INTERCEPTOR
Copyright
PDI 2012

17. GRAVITY INTERCEPTOR
Copyright
PDI 2012

18. GRAVITY INTERCEPTOR
IAPMO Z1001
Copyright
PDI 2012

19. Hydro Mechanical Grease interceptor
Copyright
PDI 2012

20. Hydro Mechanical
INTERCEPTOR
Copyright
PDI 2012

21. Hydro Mechanical
Grease interceptor
Copyright
PDI 2012

22. Hydro Mechanical Interceptor
PDI G101
Copyright
PDI 2012

23. GREASE REMOVAL DEVICE GRD (AGRU) PDI G101
Copyright
PDI 2012

24. HYDRO MECHANICAL PDI G102
Alarm/ Sensing
Copyright
PDI 2012

25. FOG DISPOSAL SYSTEM
Copyright
PDI 2012

26. IAPMO Z1001Prefabricated Gravity Interceptors
STANDARDS
Hydro Mechanical
PDI G101/ ASME A
ASME A
ASME A
PDI G102
Gravity Interceptors
IAPMO Z1001Prefabricated Gravity Interceptors
Copyright
PDI 2012

27. Testing and Certification for Hydro Mechanical interceptors
STANDARDS
Hydro Mechanical
PDI G101
Testing and Certification for
Hydro Mechanical interceptors
PDI G101 performance standard
External vented flow control
Removable cover
Rated for GPM flow
Grease retention capacity of
twice rated flow
Efficiency 90%-95% range
Copyright
PDI 2012

28. Performance Standards Equipment Testing Certification
Hydro Mechanical PDI G Testing and Certification for Hydro Mechanical interceptors
Performance Standards
Equipment
Testing
Certification
Copyright
PDI 2012

29. Hydro Mechanical Grease interceptor
Copyright
PDI 2012

30. PDI G101 Test Rig
Copyright
PDI 2012

31. SINKS
Copyright
PDI 2012

32. SINKS
Copyright
PDI 2012

33. SINKS
Copyright
PDI 2012

34. FLOW CONTROL
Copyright
PDI 2012

35. FLOW CONTROL
Copyright
PDI 2012

36. SKIM TANK
Copyright
PDI 2012

37. EQUIPMENT
Copyright
PDI 2012

38. EQUIPMENT
Copyright
PDI 2012

39. TESTING Example 25 GPM Interceptor
Two sinks each at 25 Gallons at 160 F
Copyright
PDI 2012

40. TESTING Example 25 GPM Interceptor
Two sinks each at 25 Gallons at 160 F
Copyright
PDI 2012

41. TESTING Lard Ratio One Pound/ Five Gallons
Five Pounds of Lard each Run at 160F
Copyright
PDI 2012

42. TESTING Min. of 12 Runs per Test Total Lard min.60 Pounds per Test
Copyright
PDI 2012

43. TESTING Min. Retained Lard 56.25 Pounds
Grease removal efficiency 90%-95%
Copyright
PDI 2012

44. TESTING Min. Retained Lard 56.25 Pounds
Grease removal efficiency 90%-95%
Copyright
PDI 2012

45. TESTING
Lard is Skimmed and separated
Copyright
PDI 2012

46. TESTING
Lard is Skimmed and separated
Copyright
PDI 2012

47. TESTING Grease added Efficiency = Grease Added - Grease Skimmed
Copyright
PDI 2012

48. Testing and Certification
Copyright
PDI 2012

49. Testing and Certification Performance
Copyright
PDI 2012

50. Testing and Certification Performance
Copyright
PDI 2012

51. Testing and Certification Performance
Orange County Study
Copyright
PDI 2012

52. Testing and Certification for Grease Interceptors with FOG
STANDARDS
PDI G102
Testing and Certification for
Grease Interceptors with FOG
Sensing and Alarm Devices
PDI G102 performance standard
Grease sensing
Audible Alarm
Visual Alarm
Alarms at 60%-100% capacity
Grease removal per PDI G101 testing
Copyright
PDI 2012

53. HYDRO MECHANICAL PDI G102
Copyright
PDI 2012

54. Grease Interceptor GRD
Grease Removal Device (GRD)
Any hydro mechanical grease interceptor that automatically, mechanically removes non-petroleum fats, oils and grease (FOG) from the interceptor, the control of which are either automatic or manually initiated.
ASME A
Copyright
PDI 2012

55. GREASE REMOVAL DEVICE GRD
Hydro mechanical grease interceptor
External grease collection
Timer actuated
Sensor operated
Skim off grease
Disc
Belt
Hydraulic
Pump
Copyright
PDI 2012

56. GREASE REMOVAL DEVICE GRD
Copyright
PDI 2012

57. GREASE REMOVAL DEVICE GRD
Copyright
PDI 2012

58. GREASE REMOVAL DEVICE GRD
Copyright
PDI 2012

59. GREASE REMOVAL DEVICE “GRD” TESTING
Hydro mechanical grease interceptor
Test PDI G101 Grease separating
ASME A Grease removal
150% Removal of Rated capacity, 10 hours
FOG removed, Maximum of 5% water
Copyright
PDI 2012

60. SYSTEM FOG DISPOSAL FOG Disposal System –
A grease interceptor that reduces non petroleum fats, oils, and grease (FOG) in effluent by separation, and mass and volume reduction.
ASME A
Copyright
PDI 2012

61. FOG DISPOSAL SYSTEM
Copyright
PDI 2012

62. Testing SYSTEM FOG DISPOSAL PDI G101 Grease separation
ASME A Grease Reduction
Discharge water 100mg/liter max. FOG
Copyright
PDI 2012

63. GRAVITY INTERCEPTOR Design Standard
Copyright
PDI 2012

64. GRAVITY INTERCEPTOR Design Standard
Copyright
PDI 2012

65. Design criteria for Gravity interceptor, IAPMO Z1001
Stoke’s Law
300 Gallon volume minimum
Two chambers 2/3 and 1/3
Two access point Inlet and outlet
baffle Tee 4” Inlet, outlet above water
Center baffle
length more than width
Air space 9”
Liquid depth 30” min. 6 ft. max
Efficiency 80%-85 % range
Sized by Gallons volume
Copyright
PDI 2012

66. Copyright
PDI 2012

67. GRAVITY INTERCEPTOR
BEWARE!
Copyright
PDI 2012

68. GRAVITY INTERCEPTOR BEWARE!
Copyright
PDI 2012

69. Seven week closure
Copyright
PDI 2012

70. 2006 Major changes in the Code for Grease Interceptors UPC, IPC
Intercepting Grease
UPC,IPC 2006, 2012
2006 Major changes in the Code for Grease Interceptors UPC, IPC
Copyright
PDI 2012

71. Intercepting Grease Grease Interceptor Hydro Mechanical Gravity
UPC,IPC 2006, 2012
New Definitions
Grease Interceptor
Hydro Mechanical
Gravity
Copyright
PDI 2012

72. Intercepting Grease IPC,UPC, 2006 2009 2012
What happened in 2006 to Grease Traps and passive interceptor?
Deleted UPC, IPC 2006
Copyright
PDI 2012

73. Intercepting Grease 2003, 2006 2009 2012 Trap
A fitting or device that provides a liquid seal to prevent the emission of sewer gases without materially affecting the flow of sewage or wastewater through the trap.
Copyright
PDI 2012

74. Intercepting Grease
IPC Changes
Copyright
PDI 2012

75. Intercepting Grease IPC 2003 IPC 2006 IPC 2009 IPC 2012
Copyright
PDI 2012

76. Intercepting Grease IPC 2003 Grease Interceptor
A passive interceptor whose rated flow exceeds 50 GPM.
Copyright
PDI 2012

77. Intercepting Grease IPC 2003 Grease Trap.
A passive interceptor whose rated flow is 50 GPM or less.
Copyright
PDI 2012

78. Intercepting Grease IPC 2006 2009 Chapter 2 Definitions
Grease Interceptor (replaces grease interceptor & grease trap)
A plumbing appurtenance that is installed in a sanitary drainage system to intercept oily and greasy wastes from a wastewater discharge. Such device has the ability to intercept free-floating fats and oils.
Copyright
PDI 2012

79. Intercepting Grease IPC 2012 Chapter 2 Definitions Grease Interceptor
Hydro-Mechanical Grease Interceptor. A plumbing appurtenance that is installed in the sanitary drainage system to intercept free-floating (FOG) fats, oils and grease from the wastewater discharge. Continuous separation is accomplished by air entrainment, buoyancy and interior baffles.
Gravity Grease Interceptor. A plumbing appurtenance of not less than 500 gallon capacity that are installed in the sanitary drainage system to intercept free-floating (FOG) fats, oils and grease from the wastewater discharge. Separation is accomplished by gravity during a retention time of not less than 30 minute.
Copyright
PDI 2012

80. IPC 1003.3.5 Automatic grease removal devices. (GRD)
Intercepting Grease IPC
IPC Automatic grease removal devices. (GRD)
Where automatic grease removal devices are installed, such devices shall be located downstream of each fixture or multiple fixtures in accordance with the manufacturer’s instructions. The automatic grease removal device shall be sized to pre-treat the measured or calculated flows for all connected fixtures or equipment. Ready access shall be provided.
Copyright
PDI 2012

81. Ready access shall be provided.
Intercepting Grease IPC
IPC Automatic grease removal devices.
Ready access shall be provided.
Copyright
PDI 2012

82. Shall be equipped with devices to control the rate of water flow.
Intercepting Grease IPC
IPC Rate of Flow Controls
Shall be equipped with devices to control the rate of water flow.
Applies to Hydro-Mechanical only
Copyright
PDI 2012

83. CAPTURE the GREASE Rate of Flow Controls
Intercepting Grease IPC
Rate of Flow Controls
Copyright
PDI 2012

84. CAPTURE the GREASE Shall have the grease retention capacity
Intercepting Grease IPC
IPC Grease interceptor capacity
Shall have the grease retention capacity
Table
Applies to Hydro-Mechanical only
Copyright
PDI 2012

85. CAPTURE the GREASE Intercepting Grease IPC 2006 2009 2012
IPC Approval
The size, type and location of each interceptor and of each separator shall be designed and installed in accordance with the manufacturer’s instructions ……….
Copyright
PDI 2012

86. CAPTURE the GREASE IPC 1003.3.2 Food waste Grinders
Intercepting Grease IPC
IPC Food waste Grinders
A solids interceptor shall separate the
discharge before connecting to the grease
interceptor.
Applies to all grease interceptors
Copyright
PDI 2012

87. Intercepting Grease, IPC 2006, 2012
IPC Grease interceptors and automatic grease removal devices
Grease interceptors or automatic grease removal devices shall conform to
PDI G101, ASME A or ASME A and shall be installed in accordance with the manufacturer’s instructions.
Note no size limitation
Exception: Volume not less 500 Gallons outside
Copyright
PDI 2012

88. Note no size limitation
Intercepting Grease IPC 2012
Hydro-Mechanical Grease interceptors and automatic grease removal devices (GRD).
Grease interceptors or automatic grease removal devices shall conform to PDI G101, ASME A or ASME A and shall be installed in accordance with the manufacturer’s instructions.
Note no size limitation
Copyright
PDI 2012

89. Intercepting Grease
UPC Changes
Copyright
PDI 2012

90. CAPTURE the GREASE
Intercepting Grease UPC 2006, Chapter 2 Definitions Grease Interceptor
Hydro-Mechanical Grease Interceptor. A plumbing appurtenance that is installed in the sanitary drainage system to intercept free-floating (FOG) fats, oils and grease from the wastewater discharge. Continuous separation is accomplished by air entrainment, buoyancy and interior baffles.
Gravity Grease Interceptor. A plumbing appurtenance of not less than 300 gallon capacity that are installed in the sanitary drainage system to intercept free-floating (FOG) fats, oils and grease from the wastewater discharge. Separation is accomplished by gravity during a retention time of not less than 30 minute.
Copyright
PDI 2012

91. UPC CHANGE UPC 2003-2006 What happened to Appendix H ?
New Sizing method Chapter 10
Copyright
PDI 2012

92. Flow Control’s UPC 2006
Each plumbing fixture or piece of equipment connected to a hydro mechanical grease interceptor shall be provided with an approved type of vented flow control installed in a readily accessible and visible location.
No flow-control device having adjustable or removable parts shall be approved
Copyright
PDI 2012

93. Grease interceptor Installation General
UPC Food Waste Disposal Units and
Dishwashers. Unless specifically required or
permitted by the Authority Having Jurisdiction,
no food waste disposal unit or dishwasher shall
be connected to or discharge into any grease
interceptor. Commercial food waste disposers
shall be permitted to discharge directly into the
building’s drainage system.
Copyright
PDI 2012

94. Grease interceptor Installation General
UPC Each fixture discharging into a grease interceptor shall be individually trapped and vented in an approved manner.
Copyright
PDI 2012

95. Grease interceptor Installation General
UPC Waste discharge in establishments from fixtures and equipment which may contain grease, including but not limited to, scullery sinks, pot and pan sinks, dishwashers, soup kettles, and floor drains located in areas where grease-containing materials may exist, may be drained into the sanitary waste through the interceptor when approved by the Authority Having Jurisdiction.
Copyright
PDI 2012

96. Grease interceptor Installation General
UPC Each grease interceptor shall be so installed and connected that it shall be
at all times easily accessible for inspection,
cleaning, and removal of the intercepted
grease. A gravity grease interceptor
complying with IAPMO Z1001, shall not be
installed in any part of a building where
food is handled. Location of the grease
interceptor shall meet the approval of the
Authority Having Jurisdiction.
Copyright
PDI 2012

97. Grease interceptor Installation General
UPC Interceptors shall be placed as close as practical to the fixtures they serve.
Copyright
PDI 2012

98. MAINTAINANCE
UPC The Authority Having Jurisdiction shall have the authority to mandate the installation of additional equipment or devices and to mandate a maintenance program.
Automatic Sensor
Copyright
PDI 2012

99. MAINTAINANCE
Grease Removal Device
Copyright
PDI 2012

100. Copyright PDI 2012

101. Sizing GREASE INTERCEPTORS
Hydro Mechanical
Gravity
Copyright
PDI 2012

102. Defining the Sizing GREASE INTERCEPTORS
Hydro Mechanical GPM
Gravity Gallons capacity
Copyright
PDI 2012

103. Size Ranges of GREASE INTERCEPTORS
Hydro Mechanical GPM
7 to 100 GPM
Gravity Gallons capacity
500 Gallons and larger
Copyright
PDI 2012

104. Sizing GREASE INTERCEPTORS
For any type of Grease interceptor drain line flow in GPM must be determined
Copyright
PDI 2012

105. Sizing Gravity GREASE Interceptors
All interceptors are sized by
calculating flow in GPM
Drain pipe capacity
Actual flow
DFU’s
Copyright
PDI 2012

106. SIZING Grease INTERCEPTORS by Drain line capacity
Pipe Size Diameter
¼” slope
GPM 2”
.025
19.44 3”
58.67 4”
125.77 5”
229.75 6”
375.47
Copyright
PDI 2012

107. SIZING Grease INTERCEPTORS by Actual Flow
Fixture type
Fixture size
Fixture quantity
Other equipment
Copyright
PDI 2012

108. SIZING Grease INTERCEPTORS by Actual Flow
Fixture type
Sinks that are drained… Drain size
Pre rinse……………….... Fixture flow
Food prep……………….. Fixture flow
Cooking equipment….... Drain size
Other equipment………. Rated flow
The total= peak flow
Copyright
PDI 2012

109. Sizing Gravity GREASE INTERCEPTORS
Applying peak GPM flow to Sizing
Factor of safety?
1% of the time flow is at peak
75%-90% of flows are 1/3 peak
Copyright
PDI 2012

110. SIZING Gravity GREASE INTERCEPTORS
by GPM FLOW Peak flow GPM X 30 min
Gravity Grease Interceptor. A plumbing appurtenance of not less than 500 gallon capacity that is installed in the sanitary drainage system to intercept free-floating (FOG) fats, oils and grease from the wastewater discharge. Separation is accomplished by gravity during a retention time of not less than 30 minute.
Copyright
PDI 2012

111. SIZING Gravity GREASE INTERCEPTORS by DFU’S
Gravity Grease Interceptor Sizing
DFUs Interceptor Volume Pipe size
gallons
21 (3) gallons
,000 gallons ”pipe
90 (3) ,250 gallons
,500 gallons ” pipe
,000 gallons
307 (3) ,500 gallons
,000 gallons ” pipe
,000 gallons
,000 gallons
,500 gallons ” pipe
,000 gallons
,000 gallons
Copyright
PDI 2012

112. SIZING Gravity GREASE INTERCEPTORS by DFU’S
If drainage fixture units (DFUs) are not known, the interceptor shall be sized based on the maximum DFUs allowed for the pipe size connected to the inlet of the interceptor.
Copyright
PDI 2012

113. Sizing Hydro Mechanical Grease Interceptors
All interceptors are sized by
calculating flow in GPM
Drain pipe capacity
Actual flow
Copyright
PDI 2012

114. SIZING Grease INTERCEPTORS HYDRO MECHANICAL by Drain line capacity
Pipe Size Diameter
¼” slope
GPM 2”
.025
19.44 3”
58.67 4”
125.77 5”
229.75 6”
375.47
Copyright
PDI 2012

115. SIZING Grease INTERCEPTORS HYDRO MECHANICAL by Actual fixture, sink
Step 1
Determine the cubic content of the fixture by multiplying length x width x depth.
A sink 48” long by 24” wide by 12” deep
Cubic content 48 x 24 x 12 = 13,824 cubic inches
Step 2
Determine the capacity in gallons.
1 gal. = 231 cubic inches.
Contents in gal. 13,824 = 59.8 gals
231
Step 3
Determine actual drainage load.
The fixture is usually filled to about 75% of capacity with waste water. The items being washed displace about 25% of the fixture content. Actual drainage load = 75% of the fixture capacity.
Actual drainage load .75 x 59.8 gals. = 44.9 gals.
Step 4
Determine the flow rate and the drainage. In general, good practices dictate a one minute drainage period, however where conditions permit , a 2 minute period is acceptable. Drainage period is the actual time required to completely empty the fixture.
Flow Rate = Actual Drainage Load
Drainage Period
Calculated flow rate for 1 minute period
Flow rate gals. = 44.9 GPM
1 Min.
Calculated flow rate for 2 minute period
Flow rate gals. = 22.5 GPM
2 Min.
Step 5
Select the interceptor which corresponds to the flow rate calculated. Note – Select larger size when flow rate falls between two sizes listed. If the flow rate is above 50 GPM, select a larger interceptor.
For 1 minute period
44.9 GPM
For a 2 minute period
22.5 GPM
Copyright
PDI 2012

116. SIZING Grease INTERCEPTORS HYDRO MECHANICAL by Actual fixture
Pre rinse…………………Fixture flow
Food prep………………..Fixture flow
Cooking equipment…....Drain size
Other equipment……....Rated flow
Actual sink one/two minute
Note: Sink drain by Manning may have lower flow
The total= peak flow
Copyright
PDI 2012

117. Sizing Hydro Mechanical Grease Interceptors
GPM peak flow =GPM size Interceptor
Note: flow control limits sink GPM
Hydro-Mechanical Grease Interceptor. A plumbing appurtenance that is installed in the sanitary drainage system to intercept free-floating (FOG) fats, oils and grease from the wastewater discharge. Continuous separation is accomplished by air entrainment, buoyancy and interior baffles.
Copyright
PDI 2012

118. SIZING GREASE INTERCEPTORS
Under sizing can be a problem
Increased drain down time
More frequent cleaning
Copyright
PDI 2012

119. SIZING GREASE INTERCEPTORS
Over sizing can be a problem
Grease Breaks down Low Water exchange
Increased cleaning cost pump truck size
Copyright
PDI 2012

120. GREASE
Polar Hydrocarbon
Free fatty acids.
Glycerin
Copyright
PDI 2012

121. FOG breaks down into Fatty acids and Glycerin
GREASE
FOG breaks down into Fatty acids and Glycerin
Hydrolisis
Microbes
Chemicals
Copyright
PDI 2012

122. Chemically bond to pipes Fatty acids are corrosive
GREASE
Fatty acids
Harden with Iron oxide
Chemically bond to pipes
Fatty acids are corrosive
Saturated fatty acids reacting
with Calcium forming a solid
tacky substance
Copyright
PDI 2012

123. GREASE Harden with Iron oxide Chemically bond to pipes Copyright
PDI 2012

124. GREASE
Saturated fatty acids reacting with Calcium forming a solid tacky substance
Copyright
PDI 2012

125. GREASE
FOG/Food breaks down
Copyright
PDI 2012

126. Over sizing GREASE Increased cost of cleaning
Over sizing encourages less
frequent cleaning
Less water exchange, septic
conditions, low Ph.
Copyright
PDI 2012

127. GREASE FOG/Food breaks down Sulfur reducing anaerobic bacteria
Hydrogen sulfide
Symbiotic aerobic bacteria
Sulfuric acid
Copyright
PDI 2012

128. GREASE INTERCEPTORS
HOW THEY WORK
Copyright
PDI 2012

129. GREASE INTERCEPTORS
Hydro-Mechanical Grease Interceptor. A plumbing appurtenance that is installed in the sanitary drainage system to intercept free-floating (FOG) fats, oils and grease from the wastewater discharge. Continuous separation is accomplished by air entrainment, buoyancy and interior baffles.
Gravity Grease Interceptor. A plumbing appurtenance of not less than 500 gallon capacity that are installed in the sanitary drainage system to intercept free-floating (FOG) fats, oils and grease from the wastewater discharge. Separation is accomplished by gravity ( buoyancy ) during a retention time of not less than 30 minute.
Copyright
PDI 2012

130. GRAVITY INTERCEPTORS
Copyright
PDI 2012

131. GRAVITY INTERCEPTORS
Copyright
PDI 2012

132. GRAVITY INTERCEPTORS
How they Work
Copyright
PDI 2012

133. GREASE INTERCEPTORS Hydro-Mechanical Grease Interceptor.
Gravity Grease Interceptors
Copyright
PDI 2012

134. Copyright
PDI 2012

135. GRAVITY INTERCEPTORS Design criteria for GRAVITY Interceptor
Compliance to IAPMO Z1001
Inlet and outlet tee’s , 4”
Two chambers 2/3 and 1/3
Exposed access ports for cleaning
Invert elevation 4”
Depth 30” To 6 ft
Length vs. width
9” air space
Distance from source
Copyright
PDI 2012

136. GRAVITY INTERCEPTORS Special applications (Multi-ceptor) Copyright
PDI 2012

137. HYDRO MECHANICAL INTERCEPTORS
Design criteria for Hydro
Mechanical interceptors
PDI G101 performance standard
External vented flow control
Removable cover
Rated for GPM flow
Grease retention capacity of
twice rated flow
Efficiency 90%-95% range
Copyright
PDI 2012

138. HYDRO MECHANICAL INTERCEPTORS
How they Work
Copyright
PDI 2012

139. HYDRO MECHANICAL INTERCEPTORS
Vented Flow Control
Copyright
PDI 2012

140. FLOW CONTROL HYDRO MECHANICAL INTERCEPTORS
At a level of 18”-36” below the fixture.
Between the fixture and Grease Interceptor
One flow control per Grease Interceptor
Copyright
PDI 2012

141. GREASE REMOVAL DEVICE “GRD”
HYDRO MECHANICAL INTERCEPTORS
GREASE REMOVAL DEVICE “GRD”
Copyright
PDI 2012

142. HYDRO MECHANICAL INTERCEPTORS GREASE REMOVAL DEVICE “GRD”
Copyright
PDI 2012

143. GREASE REMOVAL DEVICE “GRD”
HYDRO MECHANICAL INTERCEPTORS
GREASE REMOVAL DEVICE “GRD”
Copyright
PDI 2012

144. HYDRO MECHANICAL INTERCEPTORS
FOG Disposal System
A grease interceptor that reduces non petroleum fats, oils, and grease (FOG) in effluent by separation, and mass and volume reduction.
ASME A
Copyright
PDI 2012

145. FOG DISPOSAL SYSTEM
Copyright
PDI 2012

146. GREASE INTERCEPTORS Hydro vs Gravity
Standards
Any
300
Flow No
Min. Size
Flow control
Vent
Grinders
Outdoors
Certification
Location
Empty
Cleaning
Yes
Copyright
PDI 2012

147. GREASE INTERCEPTORS Hydro vs Gravity
• Foot Print • Small • Larger
• Volume Pumped • Small • Larger
Copyright
PDI 2012

148. GREASE INTERCEPTORS
INSTALLATION
Copyright
PDI 2012

149. GREASE INTERCEPTORS
INSTALLATION
FLOW CONTROL
Copyright
PDI 2012

150. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

151. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

152. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

153. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

154. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

155. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

156. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

157. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

158. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

159. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

160. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

161. GREASE INTERCEPTORS INSTALLATION
Copyright
PDI 2012

162. GREASE INTERCEPTORS INSTALLATION
General
No Garbage/ food grinder directly connected
Avoid high detergent fixtures
Easy access for cleaning
Check for correct AHJ
Check for local required interceptor designs
Copyright
PDI 2012

163. GREASE INTERCEPTORS INSTALLATION
General
Avoid distances of greater than 25 ft
Gravity and Hydro can be used together
Gravity installed outside of building
Copyright
PDI 2012

164. GREASE INTERCEPTORS Hydro vs Gravity
Standards
Any
300
Flow No
Min. Size
Flow control
Vent
Grinders
Outdoors
Certification
Location
Empty
Cleaning
Yes
Copyright
PDI 2012

165. Copyright PDI 2012

166. GREASE INTERCEPTORS SSO
New Awareness
Clean Water Act
Regulations
Research
Technology available
Design considerations
Copyright
PDI 2012

167. New Awareness
Copyright
PDI 2012

168. SSO Sanitary Sewer overflows
New Awareness
What problems it cause ?
SSO Sanitary Sewer overflows
"SSO", are a violation of the Federal Clean Water Act. These SSO’s have resulted in millions of dollars in fines by the EPA
Copyright
PDI 2012

169. SSO Sanitary Sewer overflows
Copyright
PDI 2012

170. SSO Sanitary Sewer overflows
These overflows are a direct
violation of the Clean Water Act.
The enforcement arm of the
Federal government is the EPA
Copyright
PDI 2012

171. SSO Sanitary Sewer overflows
In Orange County, CA, 252 orders have been issued, closing beaches for more than 2000 days (from 1987 through 2000). The majority of these closures were the result of bacterial contamination from sewage spills flowing into the ocean, usually originating from sewer lines clogged with grease. This is almost 6 years of closure.
Copyright
PDI 2012

172. SSO Sanitary Sewer overflows
EPA has reported in monitoring 35 States there were 40,000 beach day closings in the year 2006, due to contamination.
Copyright
PDI 2012

173. SSO Sanitary Sewer overflows
Los Angeles County Sanitation Districts are fined $4.6 million for January 2006 sewage spill. Agreed to a $2.5 million settlement and released from liability for 93 sewage spill over the previous five years.
Copyright
PDI 2012

174. SSO Sanitary Sewer overflows
Connecticut
2200 SSO’s
Copyright
PDI 2012

175. SSO Sanitary Sewer overflows
Regulations
State
Plumbing Code
Public Health Code
POTW
City
Copyright
PDI 2012

176. SSO Sanitary Sewer overflows
Enforcement
AHJ
BY State
Within the State
BY Sewer Company
Copyright
PDI 2012

177. SSO Sanitary Sewer overflows
Studies
Orange County FOG Control 2005
NC State Project FROG 2007
Copyright
PDI 2012

178. SSO Sanitary Sewer overflows
Copyright
PDI 2012

179. SSO Sanitary Sewer overflows
Copyright
PDI 2012

180. SSO Sanitary Sewer overflows
Orange County Study
Copyright
PDI 2012

181. SSO Sanitary Sewer overflows
Orange County
Copyright
PDI 2012

182. SSO Sanitary Sewer overflows
NC State Project FROG 2007
FOG blockages are the primary cause in 40% to 50% of all SSO’s (Southerland,2002)
Another 10% to 25% are roots and grease
Copyright
PDI 2012

183. SSO Sanitary Sewer overflows
NC State Project FROG 2007
50% to 75%
Copyright
PDI 2012

184. Were does it come from GREASE Food preparation and clean up Schools
Assisted Living
Nursing homes
Hospitals
Amusement Parks
Malls
Restaurants
Copyright
PDI 2012

185. How much? GREASE Cafeteria 4,500 mg/L Chinese 1,900 mg/L
Italian ,000 mg/L
American mg/L
Copyright
PDI 2012

186. Reference / Information www.WERF.org
New Awareness
Reference / Information
Water Environment Research Foundation
Plumbing and Drainage Institute
Copyright
PDI 2012

187. GREASE
Myths and Facts
Copyright
PDI 2012

188. GREASE
Myths and Facts
Myth: If grease is not used in food preparation a grease interceptor is not needed
Fact: Grease is not the only problem. The overall problem is FOG . (Fats, oils and grease). These materials alone or in combination will result is sewer blockages
Copyright
PDI 2012

189. GREASE
Myths and Facts
Myth: If food is not prepared on site a grease interceptor is not needed
Fact: A stove is not the source of FOG, it is the sink. Containers and utensils can be a significant source of FOG
Copyright
PDI 2012

190. GREASE Myths and Facts Myth: Grease interceptors only retain FOG
Fact: In addition to FOG grease interceptors will capture food solids.
Copyright
PDI 2012

191. GREASE
Myths and Facts
Myth: Choosing a larger size grease interceptor will result in a greater grease removal efficiency.
Fact: When grease interceptor has been sized properly to the anticipated maximum flow using a grease interceptor with a larger flow capacity will not increase grease removal efficiency.
Copyright
PDI 2012

192. GREASE
Myths and Facts
Myth: The larger the grease storage capacity the more efficient the interceptors grease removal.
Fact: Grease must be separated from the waste water before it can be stored. Storage capacity and grease removal efficiency are not related.
Copyright
PDI 2012

193. GREASE
Myths and Facts
Myth: The grease must cool and harden to separate from the waste water.
Fact: Grease interceptors separate based on the difference in specific gravity of FOG and water. Liquefied grease floats just as well as solidified grease. Grease is lighter than water.
Copyright
PDI 2012

194. GREASE
Myths and Facts
Myth: Hot water will melt the captured grease and wash the grease through the interceptor
Fact: All hydro mechanical grease interceptors are tested for grease removal efficiency with 150°F water.
Copyright
PDI 2012

195. GREASE
Myths and Facts
Myth: Low temperature dish washers can connect to the grease interceptor.
Fact: All dishwashers can be problematic. It is not the temperature but the soaps, detergents and sanitizers that emulsify the FOG.
Copyright
PDI 2012

196. GREASE
Myths and Facts
Myth: It is important to connect floor drains to the grease interceptor.
Fact: Floor drains are not usually a significant source of FOG. Drain cleaners and strong cleaning agents used on floors can emulsify FOG already captured in a grease interceptor.
Copyright
PDI 2012

197. GREASE
Myths and Facts
Myth: Once the grease is captured in the interceptor, it will remain captured in the interceptor as long as the interceptor is not yet 25% full.
Fact: Because the grease (FOG) is contaminated with food particles and the interceptor is a breeding ground for bacteria, the FOG can be broken down, exit the interceptor and create blockages downstream.
Copyright
PDI 2012

198. GREASE Myths and Facts Myth: Over sizing an interceptor cannot hurt.
Fact: Over sizing an interceptor relative to actual flow is a problem. It can result in the generation of hydrogen sulfide gas that can convert to an acid. Both metal and concrete structures downstream have suffered severe structural damage from this acid.
Copyright
PDI 2012

199. GREASE
Myths and Facts
Myth: When the grease interceptor is full, the drain line will stop flowing.
Fact: Water will continue to flow even when the FOG in the interceptor is at capacity. Additional grease in the wastewater will simply flow right through the interceptor. Grease interceptors must be either manually or electronically monitored.
Copyright
PDI 2012

200. GREASE
Myths and Facts
Myth: With the change to healthier cooking oils, there is less of a FOG problem.
Fact: Cooking oils that are healthier for you are no healthier for the drainage system. They are all polar hydrocarbons. In fact, some of the new alternative cooking oils with specific gravities closer to water will be harder to capture from the wastewater.
Copyright
PDI 2012

201. GREASE
Myths and Facts
Myth: A clogged drain and clean out is the worst that can happen.
Fact: FOG can can cause extensive sewer failure and costly repairs.
Copyright
PDI 2012

202. Copyright
PDI 2012

203. GREASE Myths and Facts Myth: Grease does not clog plastic pipe
Fact: FOG can create blockages in all drain pipe materials.
Copyright
PDI 2012

204. Copyright
PDI 2012

205. THANK YOU
Copyright
PDI 2012