Presby Environmental EnviroFin Design And Installation Manual Download Page 22

2.0 SYSTEM DESIGN 

© Presby Environmental, Inc., Design & Installation Manual, July 2020 Edition  

22 

 

 

Illustration of by-pass venting: 

Vent Manifolds 

A vent manifold may be incorporated to connect the ends of a number of sections 

or rows of EF units to a single vent opening. Slope the lines connecting the 

manifold to the FDU to drain condensation.  

 

2.7  Aquaworx Remediator 

The Aquaworx Remediator system provides aerobic conditions to significantly reduce wastewater strength and 

increase the dissolved oxygen concentration in the effluent.  The bacteria within the oxygen-rich wastewater 

works to minimize the waste materials suspended in the effluent. The Remediator is installed in the last chamber 

of a state approved multi-compartment septic tank per manufacturer requirements. Note: All minimum septic tank 

sizing requirements listed in Env-Wq 1010 must be met independent of, and without respect to, use of a 

Remediator. Illustrated below is the option of installing a Remediator in the outlet chamber of a 1,500-gallon 

Infiltrator IM-1530 plastic tank configured for multi-compartment use: 

Summary of Contents for EnviroFin

Page 1: ...g 6 2 2 Design Layout 6 2 3 Design Specifications 12 2 4 System Configurations 15 2 5 Pump Systems 19 2 6 Venting 19 2 7 Aquaworx Remediator 22 2 8 Site Selection 23 3 0 INSTALLATION 24 4 0 REJUVENATI...

Page 2: ...ons Env Wq 1000 rules do not allow for expansion of a system in the same location from which it has been removed System expansions require full removal and replacement of the existing system However i...

Page 3: ...s essential for consistent long term dispersal and infiltration of the treated wastewater flows The EF system is also completely passive requiring no electricity motors alarms computers etc The system...

Page 4: ...he cover closer to the final grade for access It has no holes for pipe attachment but is provided with a cutout as an alternate vent location The stackable FDU is mated to the standard FDU with suppli...

Page 5: ...System Sand Specification Sieve Size Percent Retained on Sieve by weight 3 4 in 19 mm 0 10 2 mm 0 35 35 0 50 mm 40 90 Note not more than 3 allowed to pass the 200 sieve verified by washing sample per...

Page 6: ...upport for commercial use Minimum SSBA requirements are not impacted by this change in specifications 3 For one bedroom applications area calculations are based on a design flow of 225 gpd per Env Wq...

Page 7: ...following formula full depth SSBA along the short axis of EF units of EF Units 1 x C L 4 5 ft c Calculate full depth SSBA multiply result from a and b above Example a The field is two EF units long o...

Page 8: ...he bed from Task 4 then subtract the full depth SSBA width length from the side of the bed perpendicular to the downslope edge of the bed This results in the width of the SSE which is a minimum of 6 i...

Page 9: ...Required Minimum SSBA required 700 gpd 100 x 89 29 626 ft2 Task 3 Determine Multiple Bed System Layout N A using a single bed Task 4 Calculate the Full Depth System Sand Bed Area a Full depth SSBA alo...

Page 10: ...bedrooms X 150 gal for residential or gpd for commercial find the minimum number of EF units required from Table B page 6 or calculate the number of units required manually Task 2 Determine Minimum S...

Page 11: ...imum of 6 in of system sand around the perimeter of the treatment fins and the appropriate minimum SSBA associated with the design flow soils perc rate and the number of EF units within each bed of th...

Page 12: ...et independent of and without respect to use of the Remediator Water Purification Systems Water purification systems and water softeners should not discharge into any EF system If water purification s...

Page 13: ...e connecting pipe slope not less than 1 approximately 1 8 in per foot EnviroFin Unit Requirements EF systems use the bed sizing tables and installation requirements noted in this Manual Residential sy...

Page 14: ...level The system slope and the site slope do not have to be the same Maximum site slope is 33 and maximum system slope is 25 Table D System Slopes Percolation Rate Minutes Per Inch mpi System Slope Ma...

Page 15: ...placement In ground systems that slope over 5 require a 2 5 ft system sand extension on the downhill side of the field The EF system in an in ground application on a level site Equalized Flow Distribu...

Page 16: ...to each level using a D box Multi Level EQ distribution systems follow the requirements for EQ distribution systems except Multi Level EQ distribution systems are limited to soils with a perc rate 30...

Page 17: ...manifolding D box outlets such that each outlet feeds a single EF unit Example Two sections one with 2 EF units and the other with 3 EF units Manifold 2 D box outlets to one section and 3 outlets to t...

Page 18: ...w EQ combination or individual D box distribution Multiple beds may consist of different size beds as long as the D box outlet ratio matches the ratio of EF units within the beds For instance 3 beds w...

Page 19: ...a maximum of 15 gpm due to the flow constraints of the equalizers o Example pumping to a combination system with 3 sections using 3 D box outlets The maximum delivery rate is 3 x 15 45 gpm The rate at...

Page 20: ...system to prevent moisture from collecting in the pipe and blocking the passage of air Remote venting or By Pass venting may be utilized to minimize the visibility of vent stacks o For options to rel...

Page 21: ...t of the vent line must be drilled creating several in holes to allow drainage of condensation This procedure may only be used if the vent pipe connecting to the system has A high point that is above...

Page 22: ...duce wastewater strength and increase the dissolved oxygen concentration in the effluent The bacteria within the oxygen rich wastewater works to minimize the waste materials suspended in the effluent...

Page 23: ...face and subsurface If allowed by state and local authorities altering the terrain upslope of a system may alleviate this requirement if the waters are sufficiently altered to redirect flows away from...

Page 24: ...n Do not excavate the system area immediately after during or before precipitation Tree Stumps Before tilling remove all grass leaves sticks brush and other organic matter or debris including all tops...

Page 25: ...ired by the approved plan and DDF To install the EF units 1 Place the assembled EF units on the full depth SSBA by centering the FDU in the prepared holes excavated earlier Notice the orientation of t...

Page 26: ...EF units Manifold 2 D box outlets to one section and 3 outlets to the other section This configuration will divide flows appropriately Flow equalizers are required in all D box outlets which split eff...

Page 27: ...n be located easily using a metal detector 6 Continue placing system sand to a minimum of 3 in over the treatment fins and a minimum of 6 in beyond the perimeter of the outermost treatment fins 7 Once...

Page 28: ...all system openings and excavations 6 Guarantee a passage of air through the system 7 Allow all units to dry for 72 hours minimum The system sand should return to its natural color 8 Re assemble the s...

Page 29: ...roducts in any amount Latex and oil paints System suffocation compacted soils barrier materials etc without proper venting System Maintenance Pumping of the Septic Tank Inspect the septic tank at leas...

Page 30: ...including loss of production and profits labor and materials overhead costs or other losses or expenses incurred by the Holder or any third party Specifically excluded from Limited Warranty coverage a...

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