advertisement

HOME / Operation and Maintenance of Septic Systems: Protect Your Investment

50 %
50 %
advertisement
Information about HOME / Operation and Maintenance of Septic Systems: Protect Your Investment
Education

Published on November 26, 2008

Author: dmalchow

Source: slideshare.net

Description

Presentation to Hazel Run, MN community members about their wastewater treatment options. November 2008.

Small Community Wastewater Education Program (SCWEP) and Onsite Sewage Treatment Program (OSTP) staff have assisted numerous communities hire professionals to prepare a Community Assessment Reports and Preliminary Engineering Reports; however SCWEP and OSTP have never prepared a CAR or PER. In order to better teach communities and soil-based treatment system professionals about the CAR process and report writing process, program staff undertook the research required to complete a CAR and PER, write the documents, and disseminate the project results to community members and leaders.
advertisement

Operation and Maintenance of Septic Systems: Protect Your Investment

Please turn off or silence your cell phone Thanks!

Operation and Maintenance of Septic Systems: Protect Your Investment Doug Malchow Extension Educator On-Site Sewage Treatment Program 507-280-5575 [email_address] http://septic.umn.edu (no www in front) Click on “Homeowner Information”

Operation and Maintenance of Septic Systems: Protect Your Investment http://septic.umn.edu Sara Christopherson Onsite Sewage Treatment Program 612-625-7243 [email_address] Doug Malchow Extension Educator OnSite Sewage Treatment Program 507-280-5575 [email_address]

http://septic.umn.edu

Sara Christopherson

Onsite Sewage Treatment Program

612-625-7243

[email_address]

Professional Training – Designers, Inspectors, Pumpers, Installers Research and Demonstration Homeowner Operation & Maintenance Small Community Wastewater Solutions

Professional Training – Designers, Inspectors, Pumpers, Installers

Research and Demonstration

Homeowner Operation & Maintenance

Small Community Wastewater Solutions

Septic System Owner’s Guide

Why Are We Here? To learn how a septic system works To potentially save you money by following some simple practices

To learn how a septic system works

To potentially save

you money by

following some

simple practices

Definitions Pathogens: Disease-causing organisms, such as viruses, protozoa, and bacteria. Often measured as fecal coliform bacteria Aerobic: Life that requires the presence of oxygen Anaerobic: Life that does not require the presence of oxygen Retention time: the amount of time sewage spends in the septic tank

Pathogens: Disease-causing organisms, such as viruses, protozoa, and bacteria. Often measured as fecal coliform bacteria

Aerobic: Life that requires the presence of oxygen

Anaerobic: Life that does not require the presence of oxygen

Retention time: the amount of time sewage spends in the septic tank

WHAT IS SEWAGE? Used water

What do we add to the water? Pathogens Virus, Bacteria (Human health; fecal coliform bacteria) Nutrients Phosphorus (Environment; weed & algal growth) Nitrogen (Blue Baby Syndrome, environment) Micro-nutrients (Human health and the environment) Solids – Organic (Biological Oxygen Demand (BOD)) Inorganics Chemicals Cleaners Water treatment Medications

Pathogens

Virus, Bacteria (Human health; fecal coliform bacteria)

Nutrients

Phosphorus (Environment; weed & algal growth)

Nitrogen (Blue Baby Syndrome, environment)

Micro-nutrients (Human health and the environment)

Solids –

Organic (Biological Oxygen Demand (BOD))

Inorganics

Chemicals

Cleaners

Water treatment

Medications

Anatomy of a Septic System Plumbing : wastewater collection Septic tank : primary treatment Soil treatment system : final treatment and dispersal

Plumbing : wastewater collection

Septic tank : primary treatment

Soil treatment

system :

final treatment

and dispersal

 

System type depends on the soil redoximorphic features

Soil borings for characteristics, soil conditions What kind of system? What size? Perc test – how fast water moves through soil Type of soil (sand, loam, clay) Amount of water used, garbage disposal, bedrooms.

Soil borings for characteristics, soil conditions

Perc test – how fast water moves through soil

Type of soil (sand, loam, clay)

Amount of water used, garbage disposal, bedrooms.

System Components Source Tank Drainfield Treatment in Soil Saturated Zone or Confining Layer Well 3 feet

Mound Drainfield Saturated Zone or Confining Layer Distribution Pipes Rock Topsoil Sand 2 feet

Mound System Slightly more “advanced”: electricity required Source Septic Tank Soil Pump Tank

Ground Surface Water table 36 in 36 in 36 in Trench At-grade Mound

What Kind of System is Bad (failing)? Leaky Tanks Surfacing to Ground Surfacing to water body Inadequate vertical separation to saturated zone or confining layer

Leaky Tanks

Surfacing to

Ground

Surfacing to water body

Inadequate vertical separation to saturated zone or confining layer

Leaky Tanks

A Failing System: An imminent health threat

Surfacing Systems

Inadequate Vertical Separation Source Tank Drainfield Treatment in Soil Saturated Zone Well 1 foot

System Components Source Tank Drainfield Treatment in Soil Saturated Zone Well 3 feet

WHAT IS SEWAGE? Used water

Where are pathogens treated ? Tank? Soil? How do they die?

Tank? Soil? How do they die?

Pathogens - captured by the soil Soil is Sticky Electrical charges

Aerobic Soil bacteria snacks! Held long enough to starve!

Treatment Performance of Soil: Fecal Coliform Removal Source: Onsite Sewage Treatment Program Manual 0 0 - 100 1,000 to 1 million 1 million to 100 million Fecal Coliform (colonies/100ml; less than ½ cup) Three Feet of Soil Treatment One Foot of Soil Treatment Septic Tank Effluent Raw Sewage Component of Sewage

Nutrients Where are they an issue? Phosphorus Surface water Nitrogen Surface & Drinking water

Where are they an issue?

Phosphorus

Surface water

Nitrogen

Surface &

Drinking water

Where are nutrients treated? Tank? Soil? What happens to them?

Where are nutrients treated? Phosphorus Soil: Attach to soil particles Nitrogen Soil: Lost to air Dilution Used by plants

Phosphorus

Soil:

Attach to soil particles

Nitrogen

Soil:

Lost to air

Dilution

Used by plants

Where are solids treated? Organics and Inorganics Tank? Soil? What happens to them?

 

Septic Tank: Primary Treatment Job of tank: catch the solids Decompose organic solids Store inorganic solids Components : Water tight tank, inlet, inlet baffle, inspection pipes, manhole, outlet baffle, outlet pipe Typical temp in tank: 60 ° Layers in tank Scum layer: floating soap, grease, toilet paper, etc Liquid layer: water, liquid, and suspended solids Sludge: heavy organic and inorganic materials in the bottom of the tank Anaerobic bacteria breakdown organic solids

Job of tank: catch the solids

Decompose organic solids

Store inorganic solids

Components :

Water tight tank, inlet, inlet baffle, inspection pipes, manhole, outlet baffle, outlet pipe

Typical temp in tank: 60 °

Layers in tank

Scum layer: floating soap, grease, toilet paper, etc

Liquid layer: water, liquid, and suspended solids

Sludge: heavy organic and inorganic materials in the bottom of the tank

Anaerobic bacteria breakdown organic solids

Where are chemicals, cleaners, & medications treated? 2 issues: Not many are destroyed in tank or soil treatment Can destroy good tank and soil bacteria

2 issues:

Not many are destroyed in tank or soil treatment

Can destroy good tank and soil bacteria

Typical water use 150 gallons per day per bedroom Assumes 2 people per bedroom 50-80 gallons/person/day

150 gallons per day per bedroom

Assumes 2 people per bedroom

50-80 gallons/person/day

Common Causes of Problems Wrong choice of system design Overloading the System Water Organics Lack of maintenance Excessive chemicals

Wrong choice of system design

Overloading the System

Water

Organics

Lack of maintenance

Excessive chemicals

Home Management tips: small changes equals big impacts Tank pumping Other water using devices Bathrooms Kitchen Laundry Soil treatment system Freezing Landscaping

Tank pumping

Other water using

devices

Bathrooms

Kitchen

Laundry

Soil treatment system

Freezing

Landscaping

Where does it come from? Water use: Bathroom = 60% Toilet = 40% Bathing = 20% Laundry = 20% Kitchen = 20%

Water use:

Bathroom = 60%

Toilet = 40%

Bathing = 20%

Laundry = 20%

Kitchen = 20%

Septic Tank Pumping

 

Tank Pumping Removes accumulated sludge and scum layers Done by licensed and bonded professional only Only allow cleaning from manholes. Never from inspection pipes

Removes accumulated sludge and scum layers

Done by licensed and bonded professional only

Only allow cleaning from manholes. Never from inspection pipes

Tank Pumping (Cont.) Remove all scum sludge and liquid from the tank Flushing and backflushing liquids is required Check baffles

Remove all scum sludge and liquid from the tank

Flushing and backflushing liquids is required

Check baffles

How Often? As needed – scum or sludge build up Impacted by water & product use Rule of Thumb Every 1 to 3 years No longer than 3 years without pumping or inspection – state code requirement Seasonal home/cabin – same as above! New home or remodel: 1 st 3 months – finishing materials are toxic New owners – start on maintenance program

As needed – scum or sludge build up

Impacted by water & product use

Rule of Thumb

Every 1 to 3 years

No longer than 3 years without pumping or inspection – state code requirement

Seasonal home/cabin – same as above!

New home or remodel: 1 st 3 months – finishing materials are toxic

New owners –

start on maintenance program

Additives: Not needed!! Starters - Bacteria are abundant in existing wastewater Feeders – Wastewater contains a lot of food for bacteria Cleaners - State regulations actually BAN the use of these products in systems!!! Never add these products to your system! They can actually damage your soil treatment system.

Starters - Bacteria are abundant in existing wastewater

Feeders – Wastewater contains a lot of food for bacteria

Cleaners - State regulations actually BAN the use of these products in systems!!!

Never add these products to your system! They can actually damage your soil treatment system.

Screens and filters? Effluent screens on tanks: Prevents suspended solids from leaving the tank Requires maintenance Washing machine lint filters: prevent lint from entering system

Effluent screens on tanks:

Prevents suspended solids from leaving the tank

Requires maintenance

Washing machine lint filters:

prevent lint from entering system

Black or Gray the problems are the Same

All wastewater must be treated

Water softener Doesn’t require treating Impact : Adds water Reduces scum layer- grabs it, takes into drainfield Salt – can affect concrete (tank) Management – Discharge to different place old drainfield/cesspool Reduce recharge frequency

Doesn’t require treating

Impact :

Adds water

Reduces scum layer- grabs it, takes into drainfield

Salt – can affect concrete (tank)

Management –

Discharge to different place old drainfield/cesspool

Reduce recharge frequency

Doug’s Softener Recharge Solution Flex Tube Grass Soil Landscape Fabric River rock

Flex Tube

Grass

Soil

Landscape Fabric

River rock

Other Sources of Water That Can Overload a System (and don’t need treatment) Sump pump/tile line discharge Lead or other water filters Dehumidifier discharge High efficiency furnace discharge Eves trough runoff Dripping faucets/”running toilets” Any other sources?

Sump pump/tile line discharge

Lead or other water filters

Dehumidifier discharge

High efficiency furnace discharge

Eves trough runoff

Dripping faucets/”running toilets”

Any other sources?

Toilet Low flow – High quality Toilet paper – use 2 ply No other products Tissue, napkins, butts (cigarettes), hair, cotton balls Leaking problems Gaskets & “running” Cleaners NOT Automatic – Tidy Bowl man Small amount with “elbow grease”

Low flow – High quality

Toilet paper – use 2 ply

No other products

Tissue, napkins, butts

(cigarettes), hair, cotton balls

Leaking problems

Gaskets & “running”

Cleaners

NOT Automatic – Tidy Bowl man

Small amount with “elbow grease”

Bathing Leaks Low flow Cleaners Shower-clean type hard on system – introduce cleaners everyday. Anti-bacterial soaps Shaving, bath oils hard on system

Leaks

Low flow

Cleaners

Shower-clean type hard on system – introduce cleaners everyday.

Anti-bacterial soaps

Shaving, bath oils hard on system

Schedule laundry Spread out loads – throughout day throughout week think “even” Use low water level setting for small loads Keep lint out of system

Spread out loads –

throughout day

throughout week

think “even”

Use low water level setting for small loads

Keep lint out of system

Soap Powdered – NO! Inorganic fillers Fine particles Clay as filler Recommend Liquid Filler - water Only amount needed Detergents w/ bleach Bleach – limit to ‘as needed’

Powdered – NO!

Inorganic fillers

Fine particles

Clay as filler

Recommend Liquid

Filler - water

Only amount needed

Detergents w/ bleach

Bleach – limit to ‘as needed’

Odors Outside : Pump tank– solves most Still? Raise vent stack Charcoal filter on stack Inside : May be frozen vent or dry trap

Outside :

Pump tank– solves most

Still? Raise vent stack

Charcoal filter on stack

Inside :

May be frozen vent or dry trap

Continual traffic is a problem

Soil Treatment System Maintenance Compaction is BAD Don’t drive/park on system Vegetative cover - Grass, mow regularly, no fertilizer, no deep root plants near system. Watch for gophers! Inspection pipes can be cut to ground level after finished grade is established

Compaction is BAD

Don’t drive/park on system

Vegetative cover - Grass, mow regularly, no fertilizer, no deep root plants near system. Watch for gophers!

Inspection pipes can be cut to ground level after finished grade is established

Freezing of Septic Systems Causes of Freezing – lack of cover, compaction, irregular system use, leaking plumbing, cold air into system, poor drainage

Causes of Freezing –

lack of cover,

compaction,

irregular system use,

leaking plumbing,

cold air into system,

poor drainage

Freezing of Septic Systems Remedy – figure out why and where; fix the problem (or use tank as a holding tank) Prevention – Let your grass grow, mulch (or styrofoam), use extra warm water, fix leaks

Remedy – figure out why and where; fix the problem (or use tank as a holding tank)

Prevention –

Let your grass grow,

mulch (or styrofoam),

use extra warm water,

fix leaks

 

 

 

 

 

 

Questions? http://septic. umn.edu (no www in front)

Add a comment

Related presentations

Related pages

Septic System Operation and Maintenance

EH Home > Septic Systems > Operation & Maintenance : ... Learn how to protect your septic system during a ... PROTECT YOUR SEPTIC Like your car, it's an ...
Read more

Operation & Maintenance – Waterloo Biofilter

Operation & Maintenance. Regular maintenance of your Waterloo Biofilter system is important to protect the environment and your investment. ... septic ...
Read more

Septic System Owners: Lewis and Clark County

For Septic System Owners. ... Don’t put food down your sink. Septic systems are not intended to dispose of ... Certified Operation and Maintenance ...
Read more

SEPTIC SYSTEM DESIGN, OPERATION, MAINTENANCE, INSPECTIONS ...

Protect your investment in your ... specialized in Septic System Design, Operation, ... all private and public septic systems need periodic ...
Read more

Your Septic System Is Your Responsibility

• Maintaining your septic system protects your investment in your ... Proper operation and maintenance of ... Protect Health When septic systems ...
Read more

HOMEOWNER’S MANUAL Septic Systems 101

HOMEOWNER’S MANUAL Septic Systems ... filter changes plus other periodic inspections help protect the investment. ... THE CARE AND MAINTENANCE OF YOUR ...
Read more

Septic Systems 101 - AzOWRA

Septic Systems 101 ... filter changes plus other periodic inspections help protect your investment. ... THE CARE AND MAINTENANCE OF YOUR SEPTIC SYSTEM ...
Read more

INDIVIDUAL HOME WASTEWATER TREATMENT PLANT with OREGON ...

INDIVIDUAL HOME OREGON OPERATION & MAINTENANCE STANDARDS ... highest level to protect you and your investment. ... Systems utilizing fiberglass, ...
Read more