collection of solid waste
TRANSCRIPT
Collection of Solid WasteSubmitted TO:
Dr. Nehreen MajedAssistant Professor
Department of Civil Engineering
Submitted By:Md. Moniruzzaman 11205042Md. Tanvir Hossain 11205044Md. Al-Amin Parvez 11205056Md. Abir Hossain Khan 11205060Sabit Rakin Ahmed 11205074Md. Tauhidul Karim 11205075
University of Asia PacificDepartment of Civil Engineering
What is Waste Collection?
• Waste collection is a part of the process of waste management. It is the transfer of solid waste from the point of use and disposal to the point of treatment or landfill.
• Waste collection also includes the curbside collection of recyclable materials that technically are not waste, as part of a municipal landfill diversion program.
Types of solid waste in DhakaThe main types of solid waste in Dhaka city’s are: 1. Household Waste 2. Commercial Waste 3. Medical Waste
1. Dhaka city corporation. 2. Some private society
Who collect solid waste in Dhaka city?
Classification of collection system
Based on the availability of service1. House-to-House: Waste collectors visit each individual house to collect garbage. The user generally pays a fee for this service.
2. Community Bins: Users bring their garbage to community bins that are placed at fixed points in a neighborhood or locality. MSW is picked up by the municipality, or its designate, according to a set schedule.
Classification of collection system
3. Curbside Pick-Up: Users leave their garbage directly outside their homes according to a garbage pick-up schedule set with the local authorities (secondary house-to-house collectors not typical). 4. Self Delivered: Generators deliver the waste directly to disposal sites or transfer stations, or hire third-party operators (or the municipality).
Collection Method
Based on mode of operation:1. Hauled Container System2. Stationary Container system
Hauled Container System
• An empty storage container (Known as a drop-off box) is hauled to the storage site to replace the container that is full of waste , which is then hauled to the processing point , transfer station or disposal site.
Hauled Container System
1 2 3 4 5
Disposal Site
Number of Containers = nExample below: n=5
The number of drive betweencontainers =n-1Example: dbc = 4
Stationary Container System
• Stationary Containers : In this system, containers used for the storage of waste remain at the point of collection. The collection vehicles generally stop alongside the storage containers, and collection crews load the waste from the storage containers into the collection vehicles and then transport the waste to the processing, transfer or disposal site.
Stationary Container System
Collection System in Dhaka City
Collection System in Dhaka City
Problems in Collection System
• Labor1.Labor unskilled2.High turn-over rates3.Few prospects for mechanical replacement of manual labor4.Injuries and poor working conditions5.Labor intensive6.Limited career opportunities
Problems in Collection System
• Vehicle Problem– Falls off trucks– Hit by cars– Inappropriate disposal of wastes– Lifting injuries
Problems in Collection System
• On Street Container & Passengers Problem
Some Exploration
• Collection of recyclables, yard waste, special wastes
• Yard waste containers - bagged material must be debagged prior to composting
• Automated collection • Development of efficient routes• Vehicle weight restrictions• Vehicle turning radius and clearance
Recruit Skilled labor
• Skilled Labor • Unskilled Labor
Last word
• To make our city clean & fresh we have to make sure a good waste collection system
for our beloved city.
In Our Real life
References:1. https://en.wikipedia.org/wiki/Waste_collection2. https://www.google.com.bd/search?q=waste+collection&biw=1280&bih=929&tb
m=isch&tbo=u&source=univ&sa=X&ved=0CC4QsARqFQoTCOfQmfSFkcYCFZAvvAodztEAow&dpr=1
3. http://siteresources.worldbank.org/INTURBANDEVELOPMENT/Resources/336387-1334852610766/Chap4.pdf
4. Solid and Hazardous waste management By M. Habibur Rahman & Abdullah Al-Muyeed.