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18.0 Butterfly Configuration

a) A “butterfly configuration,” is considered a single bed system with two or more sections (can also be D-box

or Combination configurations).

b) Maximum length of any row is 100 ft.

c) Serial Section loading limit is 500 GPD.

d) Beds can contain any number of serial sections.

e) System Sand Extension is required on downhill side of beds that slope over 10%.

Illustration of a Butterfly configuration:

19.0 Combination Serial Distribution (Single Level)

Combination Serial distribution within one bed, or multiple beds, is required for systems with daily design flows

greater than 900 GPD. Combination Serial distribution is quick to develop a strong biomat in the first row of each

section, providing improved effluent treatment. Each Combination Serial section is limited to a maximum loading of

500 gallons/day.

a) Combination Serial distribution consists of two or more serial sections installed in a single bed.

b) Each section in a Combination Serial system consists of a series of AES or ES rows connected at the ends

with raised connections, using offset adapters and PVC sewer and drainpipe.

c) Maximum length of any row is 100 ft.

d) Maximum 500 ft. AES or ES pipe in any serial section.

e) Serial Section loading limit is 500 GPD.

f) There is no limit on the number of Combination Serial Sections within a bed.

g) System Sand Extension (if required) placed entirely on downhill side of bed (as shown).

h) When the vent manifold is on the same side as the serial section inlets, the manifold runs over the top of

these inlets (as shown).

i) Combination systems require the use of an adequately sized D-box.

Illustrations of Single Level Combination Serial Systems:

19.1 Section Loading

Each section in a Combination Serial system has a maximum daily design flow of 500 GPD. More than the minimum

number of sections may be used. Ex: Daily design flow = 1,000 GPD requires (1,000 ÷ 500) = 2 sections minimum.

Combination systems are only required if the daily design flow exceeds 900 GPD.

Содержание Advanced Enviro-Septic

Страница 1: ...ro Septic and Enviro Septic Wastewater Treatment Systems Minimizes the Expense Protects the Environment Preserves the Site Presby Environmental Inc An Infiltrator Water Technologies Company The Next Generation of Wastewater Treatment Technology 143 Airport Rd Whitefield NH 03598 Tel 800 473 5298 Fax 603 837 9864 info presbyeco com www PresbyEnvironmental com ...

Страница 2: ...tered trademark of Presby Environmental Inc Enviro Septic is a registered trademark of Presby Environmental Inc Simple Septic is a registered trademark of Presby Environmental Inc IMPORTANT NOTICE This Manual is intended ONLY for use in designing and installing Presby Environmental s Advanced Enviro Septic and Enviro Septic Wastewater Treatment Systems The use of this Manual with any other product...

Страница 3: ...gn Criteria 9 15 0 Basic Serial Distribution Single Level 11 16 0 Basic Serial Distribution Multi Level 12 17 0 Bottom Drain 12 18 0 Butterfly Configuration 13 19 0 Combination Serial Distribution Single Level 13 20 0 Combination Serial Distribution Multi Level 14 21 0 D box Distribution Single Level 15 22 0 Multiple Bed Distribution 15 23 0 Elevated Bed Systems Mounds 15 24 0 In Ground Bed System...

Страница 4: ...lastic 1 4 Patented Presby Technology At the heart of Advanced Enviro Septic AES and Enviro Septic ES is a patented corrugated perforated plastic pipe with interior skimmer tabs and cooling ridges All AES and ES pipe is surrounded by one or more filtering treatment and dispersal layers Presby Systems are completely passive requiring no electricity motors alarms computers etc AES and ES pipes are a...

Страница 5: ...ter periods of non use provides additional surface area for bacterial growth promotes even distribution and further protects outer layers and the receiving surfaces so they remain permeable AES only Stage 6 A mat of coarse randomly oriented fibers separates more suspended solids from the effluent Stage 7 Effluent passes into the geo textile fabrics and grows a protected bacterial surface Stage 8 S...

Страница 6: ... double offset adapter is a plastic fitting 12 in in diameter with two 4 in holes designed to accept a 4 in inlet pipe raised connection vent or vent manifold and or bottom drain depending upon the particular requirements of the design configuration The 4 in holes are to be aligned in the 12 o clock and 6 o clock positions The holes are positioned 1 in from the outside edge of the double offset ad...

Страница 7: ... 5 50 7 00 8 50 10 00 11 50 13 00 14 50 16 00 17 50 19 00 20 50 22 00 Pipe Layout Width at 1 5 ft Center to Center row spacing outermost width of rows 6 0 Table D Single Level versus Multi Level Design Considerations Pipe Model Single Level System Multi Level System Soil Profile Venting Required Pipe Required Row Spacing Soil Profile Venting Required Pipe Required Row Spacing AES All Yes Table A T...

Страница 8: ... 4 75 6 63 8 50 10 38 12 25 14 13 16 00 17 88 19 75 21 63 23 50 25 38 27 25 4 00 3 00 5 00 7 00 9 00 11 00 13 00 15 00 17 00 19 00 21 00 23 00 25 00 27 00 29 00 4 25 3 13 5 25 7 38 9 50 11 63 13 75 15 88 18 00 20 13 22 25 24 38 26 50 28 63 30 75 4 50 3 25 5 50 7 75 10 00 12 25 14 50 16 75 19 00 21 25 23 50 25 75 28 00 30 25 32 50 4 75 3 38 5 75 8 13 10 50 12 88 15 25 17 63 20 00 22 38 24 75 27 13 ...

Страница 9: ...res 3 rows The pipe layout width 4 ft at 1 5 ft row spacing Step 6 Because the system slope is not greater than 10 no system sand extension is required Illustration of Example 1 Basic Serial Distribution Design Example 2 Single Level Single Family Residence 7 bedrooms 630 GPD Soil Profile 8 design for a 12 sloping system as an elevated bed Note when the system slopes over 10 a 3 ft system sand ext...

Страница 10: ...ly divided into 3 serial sections 4 rows per section Step 5 Using a row length of 90 ft and 2 ft row spacing Table G shows 12 rows will be required and will provide 1 080 ft of pipe Table G also shows the Pipe Layout Width will be 12 ft This bed will have 6 rows in the upper level and 6 rows in the lower level There will be 4 rows in each section two in the upper level will feed two rows in the lo...

Страница 11: ... daily design flow for any single family residential system is two bedrooms and 300 GPD for any commercial system a Certain fixtures such as jetted tubs may require an increase in the size of the septic tank b Daily design flow for a single bedroom apartment with a kitchen connected to a residence also sometimes referred to as a studio or in law apartment shall be calculated by adding two addition...

Страница 12: ...thin in total of 1 in of the specified elevation and preferably should be parallel to the contour of the site h It is easier if row lengths are designed in exact 10 ft increments since AES and ES pipe comes in 10 ft sections However if necessary the pipe is easily cut to any length to meet site constraints 14 12 System Side Slopes Side Slope Tapers Side slope tapering begins 3 ft from the edge of ...

Страница 13: ...ive means of disposing of this backwash other than into the system then the field will need to be oversized Calculate the total amount of backwash in GPD multiply by 3 and add this amount to the daily design flow when determining the field and septic tank sizing c Water purification systems and water softeners require regular routine maintenance consult and follow the manufacturer s maintenance re...

Страница 14: ...vered first to the Upper Rows which then connects to the Lower Level Rows by way of a Drop Connection i The Drop Connection must pitch downward toward the Lower Level at least 2 inches Illustrations of Multi Level Basic Serial Systems Illustration of sloping Multi Level Basic Serial System 17 0 Bottom Drain A bottom drain is a line connected to the hole in the 6 o clock position of a double offset...

Страница 15: ...l distribution consists of two or more serial sections installed in a single bed b Each section in a Combination Serial system consists of a series of AES or ES rows connected at the ends with raised connections using offset adapters and PVC sewer and drainpipe c Maximum length of any row is 100 ft d Maximum 500 ft AES or ES pipe in any serial section e Serial Section loading limit is 500 GPD f Th...

Страница 16: ... per Table F see para 8 0 pg 5 c Effluent must be delivered to the Upper Level Rows from the D box A Drop Connection delivers effluent from the Upper Level rows to the Lower Level rows d All Multi Level beds require venting The ends of all serial sections on the Lower Level are manifolded and taken to a vent stack Each serial section may be vented separately e Multi Level systems are limited to so...

Страница 17: ...st have the same minimum linear feet of pipe The minimum linear feet of pipe per bed is determined by dividing the total linear feet of pipe required in the system by the number of beds b Rows within a bed may vary in length to accommodate site constraints except with D box configuration which requires all rows to be the same length c End to End configurations are preferred to Side to Side configu...

Страница 18: ...et of pipe required divided by number of sections equals the minimum number of feet required for each section or bed c A section or bed may exceed the minimum linear length d Rows within a section or bed may vary in length except D box configurations to accommodate site constraints 24 0 In Ground Bed Systems AES or ES systems are installed below existing grade for sites with no soil restrictive fe...

Страница 19: ...siphons are also an acceptable means of delivering effluent to the system 30 1 Alarm Maine requires all pump systems to have a high water alarm float or sensor installed inside the pump chamber 30 2 Differential Venting All pump systems must use differential venting see illustration para 32 4 pg 20 30 3 Distribution Box All pump systems require a distribution box with some means of velocity reduct...

Страница 20: ...ion is limited to a maximum of 20 gallons per minute due to the flow constraints of the equalizers Example pumping to a combination system with 3 sections using 3 D box outlets The maximum delivery rate is 3 x 20 60 GPM Always provide a means of velocity reduction 31 0 System Sand and Sand Fill Requirements for All Beds It is critical to the proper functioning of field that the proper amount and t...

Страница 21: ...ize the visibility of vent stacks 32 2 Differential Venting a Differential venting is the use of high and low vents in a system b In a gravity system the roof stack acts as the high vent c High and low vent openings must be separated by a minimum of 10 vertical feet d If possible the high and low vents should be of the same capacity 32 3 Vent Locations for Gravity Systems a A low vent through an o...

Страница 22: ...pening See diagrams below Combination system D box system 32 6 Vent Piping Slope Vent piping should slope downward toward the system to prevent moisture from collecting in the pipe and blocking the passage of air 32 7 Remote Venting If site conditions do not allow the vent pipe to slope toward the system or the owner chooses to utilize remote venting for aesthetic reasons causing the vent pipe not...

Страница 23: ...d of all pipe rows Planning for future access will facilitate rejuvenation in the unlikely event the system malfunctions 33 7 Rocky or Wooded Areas Avoid locating systems in rocky or wooded areas that require additional site work since this may alter the soil s ability to accept water No trees or shrubs should be located within 10 ft of the system to prevent root infiltration SLOPE SLOPE BY PASS V...

Страница 24: ... to protect the system from surface water flows during construction c Do not travel across or locate excavation equipment within the portion of the site receiving System Sand d Do not stockpile materials or equipment within the portion of the site receiving System Sand e It is especially important to avoid using construction equipment down slope of the system to prevent soil compaction 34 4 When t...

Страница 25: ...le greater liquid storage capacity and increase the bacterial surfaces being developed Use raised connections to connect the rows of the field see para 3 5 pg 4 Glue or mechanically fasten all pipe connections 34 14 Backfilling Rows a Spread System Sand between the rows b If using AES confirm pipe rows are positioned with Bio Accelerator along the bottom sewn seam up c Straddle each row of pipe an...

Страница 26: ...eturn to its natural color 8 Re assemble the system to its original design configuration As long as there is no physical damage to the AES or ES components the original components may be reused 36 0 System Expansion or Repair AES ES and SS Systems are easily expanded by adding equal lengths of pipe to each row of the original design or by adding additional equal sections All system expansions must...

Страница 27: ... Advanced Enviro Septic is a combined wastewater treatment and dispersal system 38 2 Bio Accelerator Bio Accelerator fabric screens additional solids from the effluent enhances and accelerates treatment facilitates quick start up after periods of non use provides additional surface area for bacterial growth promotes even distribution and further protects outer layers and the receiving surfaces so ...

Страница 28: ...ces in order to form rows see para 3 4 pg 4 38 14 Daily Design Flow The peak daily flow of wastewater to a system expressed in gallons per day GPD systems are typically sized based on the daily design flow Design flow calculations are set forth in the Maine Rules In general actual daily use is expected to be one half to two thirds less than daily design flow 38 15 Differential Venting A method of ...

Страница 29: ... position which allows for connections from one row to another and for installation of venting see para 3 2 pg 4 38 30 Percolation Rate Also known as Perc Rate is a numerical indication of a soil s hydraulic capacity expressed in minutes per inch MPI 38 31 Pressure Distribution A pressurized small diameter pipe system used to deliver effluent to an absorption field Pressure Distribution is not per...

Страница 30: ...ir spaces along an excavated tilled or compressed surface This is also referred to as compacting In all installations it is critical to avoid smearing or compacting the soils under and around the field 38 45 Surface Diversion A natural or manmade barrier that changes the course of water flow around an onsite system s soil absorption field 38 46 System Sand Bed System Sand area required used in sys...

Страница 31: ...y Environmental Inc Maine Design Installation Manual June 2019 Edition 29 39 0 System Diagrams Note Advanced Enviro Septic may be noted as Advanced E S or simply as AES Enviro Septic may be simply noted as ES ...

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