Class Notes (972,829)
CA (572,918)
Carleton (19,086)
ENSC (29)
ENSC 2001 (29)
Lecture 10

ENSC 2001 Lecture 10: waste management
Premium

by OneClass2210445 , Fall 2017
4 Pages
14 Views

Department
Environmental Science
Course Code
ENSC 2001
Professor
Quentin Gall
Lecture
10

This preview shows page 1. Sign up to view the full 4 pages of the document.
RESOURCES WASTE MANAGEMENT
Modern trend: Integrated Waste Management (IWM)
Emerged in 1980s
Including reduction, recycling, reuse, composting, landfill, and incineration
Three Rs approach: reduction, recycle, reuse (reducing urban refuse by 50%)
More notable success with recycling, but less with reducing waste production
95% of environment damage has already occurred before recycling
Material Management
New goal: zero production of waste
Combining sustainable use of materials with resources conservation
Industrial ecosystem: producing natural urban and industrial ecosystem through material management,
waste from one part of the system as resource for another part
Liquid Waste
Sewage (wastewater + contained solid waste): largest volume of liquid waste
Waste water treatment
o Septic tank disposal
Common in rural area.
Water flow in septic tank, solids sink down to the bottom of the tank and decomposed by bacteria. Then
water flow in drain field (which is unsaturated and well oxidized for maximum efficiency) and the
filtered water can be used for agriculture
o Waste treatment plants
Used in large urban center.
Existing wastewater treatment generally has two or three stages:
1) Primary treatment, remove 30% to 40% of the pollutants. It includes:
Screening: remove the grit composed of sand ,stones, and other large particles
Sedimentation: remove remaining particulate matter (mostly organic) and form sludge.
2) Secondary treatment, activated sludge method, clean up 90% of the waste water. It includes:

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
RESOURCES WASTE MANAGEMENT Modern trend: Integrated Waste Management (IWM) Emerged in 1980s Including reduction, recycling, reuse, composting, landfill, and incineration Three Rs approach: reduction, recycle, reuse (reducing urban refuse by 50) More notable success with recycling, but less with reducing waste production 95 of environment damage has already occurred before recycling Material Management New goal: zero production of waste Combining sustainable use of materials with resources conservation Industrial ecosystem: producing natural urban and industrial ecosystem through material management, waste from one part of the system as resource for another part Liquid Waste Sewage (wastewater + contained solid waste): largest volume of liquid waste Waste water treatment o Septic tank disposal Common in rural area. Water flow in septic tank, solids sink down to the bottom of the tank and decomposed by bacteria. Then water flow in drain field (which is unsaturated and well oxidized for maximum efficiency) and the filtered water can be used for agriculture o Waste treatment plants Used in large urban center. Existing wastewater treatment generally has two or three stages: 1) Primary treatment, remove 30 to 40 of the pollutants. It includes: Screening: remove the grit composed of sand ,stones, and other large particles Sedimentation: remove remaining particulate matter (mostly organic) and form sludge. 2) Secondary treatment, activated sludge method, clean up 90 of the waste water. It includes:
More Less
Unlock Document

Only page 1 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit