Biosolids
Download
1 / 28

BIOSOLIDS - PowerPoint PPT Presentation


  • 186 Views
  • Uploaded on

BIOSOLIDS. Safe and Sustainable Management Options. What Are Biosolids. Comprised primarily of bodies of single celled organisms used in wastewater treatment Extended digestion process thoroughly breaks down organic material. Who Are the Local Biosolids Producers. Everyone!.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' BIOSOLIDS' - keitaro-rin


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Biosolids

BIOSOLIDS

Safe and Sustainable Management Options


What are biosolids

.

What Are Biosolids

  • Comprised primarily of bodies of single celled organisms used in wastewater treatment

  • Extended digestion process thoroughly breaks down organic material


Who are the local biosolids producers
Who Are the Local Biosolids Producers

Everyone!


Local biosolids management
Local Biosolids Management

  • Sanitary Districts

  • City Wastewater Treatment Plants


Characteristics
Characteristics

  • Blackish in color

  • 15% - 90% Solids

  • Mud-like to granular appearance

  • Mild to strong odor (musty or swamp like)


Epa classification
EPA Classification

  • Biosolids are classified

    according to :

  • Pathogens (disease

    causing organisms)

  • Metals


Pathogens
Pathogens

  • Class A

    • Virtually pathogen free

  • Class B

    • Treated to remove most

      pathogens


Metals
Metals

  • EPA Table 3

    • Metals concentrations below threshold for impact


Science behind biosolids recycling
Science Behind Biosolids Recycling

  • Pathogens removed

  • Metals below level of concern and immobilized in soil

  • Many metals are trace nutrients

  • Organic chemicals generally not present or at very low levels


Benefits of biosolids
Benefits of Biosolids

  • Humus building

  • Nutrients

    • Nitrogen,

    • Phosphorous

    • Potassium

  • Organic Nitrogen

  • Micro Nutrients


Soil benefits
Soil Benefits

Soil without biosolids

Soil with biosolids

Holds water

Water Runs off

Loses nutrients

Soil compacted

Adds Nutrients

Mixes with Soil


Crops benefits
Crops Benefits

Larger crop yields

Better root system


Comparison to other fertilizers
Comparison to Other Fertilizers

  • Pathogens

  • Metals

  • Other





Public perception
Public Perception Fertilizers

  • ‘Ick / Yuck’ Factor

  • It’s Poop!


Common public concerns about biosolids
Common Public Concerns FertilizersAbout Biosolids

Land Application is the best means of returning to the soil nutrients and organic matter that were originally removed. It is recycling a resource just as recycling newspapers or bottles is. If the right safeguards are taken, it can be environmentally protective and even beneficial.”

Sarah Clark – Environmental Defense Fund

  • Heavy Metals

  • Pathogens

  • Organic Chemicals

    (PCB’s DDT etc.)


Current practices
Current Practices Fertilizers

  • Land Application – Kern County

  • Distribution to local public

  • Composting – Kern County

  • Composting – Santa Barbara

    County


Range of biosolids recycling and disposal alternatives
Range of Biosolids Recycling and FertilizersDisposal Alternatives

  • Disposal

    • Landfill

    • Monofill

    • Incineration

  • Recycling

    • Chemical stabilization

    • Pelletization

    • Land Application

    • Composting


Drawbacks of biosolids disposal
Drawbacks of Biosolids Disposal Fertilizers

  • Availability of Landfill Space

    • None in county

    • Out-of-County Difficult and Expensive

  • Environmental Impacts of Incineration

  • No Monofills


Threats to biosolids recycling
Threats to Biosolids Recycling Fertilizers

  • Political Control

  • Poorly Managed Operations

  • Odor Complaints

  • Poorly Sited facility

  • Incomplete Information to Public

  • Public Perception


Sb 926
SB 926 Fertilizers

  • Allows Kern County to ban importation of biosolids for application to land.

  • Status

    • Approved by State Senate

    • Assembly action pending


Current status of land application in california

NEVADA Fertilizers

AZ

MEXICO

Current Status of Land Application in California

  • Notes:

  • Ordinances that permit land application may have restrictions that are more severe than U.S. EPA 503 Regulations. Consult each ordinance to verify.

DEL NORTE

DEL NORTE

SISKIYOU

MODOC

SHASTA

LASSEN

HUMBOLDT

TRINITY

TEHAMA

PLUMAS

GLENN

BUTTE

SIERRA

MENDOCINO

MENDOCINO

NEVADA

COLUSA

YUBA

PLACER

LAKE

SUTTER

YOLO

EL DORADO

SONOMA

NAPA

AMADOR

ALPINE

SACRAMENTO

SOLANO

CALAVERAS

MARIN

CONTRACOSTA

SAN JOAQUIN

TUOLUMNE

MONO

SAN FRANCISCO

SAN FRANCISCO

STANISLAUS

MARIPOSA

Ban on Land Application

ALAMEDA

SAN MATEO

SANTA CLARA

MERCED

MADERA

SANTA CRUZ

Practical Ban

FRESNO

INYO

SAN BENITO

TULARE

Ban on Class B

MONTEREY

KINGS

SAN LUIS OBISPO

KERN

Ordinance Permits Land Application

SAN BERNARDINO

SANTA BARBARA

No Regulations/Ordinances Enacted

VENTURA

LOS ANGELES

RIVERSIDE

ORANGE

SAN DIEGO

IMPERIAL


Tomorrow s picture

OREGON Fertilizers

NEVADA

AZ

MEXICO

Tomorrow’s Picture ?

Counties Likely Have Viable Class B Land Application Sites After Jan 1, 2003

  • Unavailable for Land Application

  • Banned

  • Too Urbanized

  • No significant agriculture

  • Too Far

Available for Land Application

Other Alternatives

Composting Site (limited Capacity)

Available Landfill

Rev. 7/18/01


Developing sustainable alternatives
Developing Sustainable Alternatives Fertilizers

  • Informed Decision Makers

  • Local Control

  • Siting

  • First Rate Operation


Mjswtg
MJSWTG Fertilizers

  • November 2003 – TAC Identified an in-county composting site as having sufficient capacity to meet mid-term (5-15 year) needs.

  • Identified inclusion of biosolids in the MSW Recycling and Waste Conversion Facility as preferred long term approach.


Ideal outcome
Ideal Outcome Fertilizers

  • Long term

    in-county

    sustainable

    solution(s)