Population arund the world are struggling with waste disposal issues. A new concept is emerging worldwide that the ultimate way to deal with waste is to eliminate it. The concept of Zero Waste encourages redesign of resource life cycles so that all products are reused, thereby systematically avoiding and eliminating the volume and toxicity of waste and materials.
The philosophy of Zero Waste strives to ensure that products are designed to be repaired, refurbished, re-manufactured and generally reused. Among key zero waste facilities are material recovery facilities, composting plants, reuse facilities, wastewater/biosolids plants etc.
Role of MRF(Material recovery facilities (MRFs) in Waste management
Material recovery facilities (MRFs) are an essential part of a zero-waste management program as it receives separates and prepares recyclable materials for marketing to end-user manufacturers. The main function of the MRF is to maximize the quantity of recyclables processed while producing materials that will generate the highest possible revenues in the market. MRFs can also process wastes into a feedstock for biological conversion through composting and anaerobic digestion.
A materials recovery facility accepts materials, whether source separated or mixed, and separates, processes and stores them for later use as raw materials for remanufacturing and reprocessing. MRFs serve as an intermediate processing step between the collection of recyclable materials from waste generators and the sale of recyclable materials to markets for use in making new products.
There are basically four components of a typical MRF:
Any facility design plan should accommodate all these activities which promote efficient and effective operation of a recycling program. MRFs may be publicly owned and operated, publicly owned and privately operated, or privately owned and operated.
There are two types of MRFs – dirty and clean. A dirty MRF receives mixed waste material that requires labor intense sorting activities to separate recyclables from the mixed waste. A clean MRF accepts recyclable materials that have already been separated from the components in municipal solid waste (MSW) that are not recyclable. A clean MRF reduces the potential for material contamination.
A typical Zero Waste MRF (ZWMRF) may include three-stream waste collection infrastructure, resource recovery center, reuse/recycling, residual waste management facility and education centers.
The primary objective of all MRFs is to produce clean and pure recyclable materials so as to ensure that the commodities produced are marketable and fetch the maximum price. Since waste streams vary in composition and volume from one place to another, a MRF should be designed specifically to meet the short and long term waste management goals of that location. The real challenge for any MRF is to devise a recycling strategy whereby no residual waste stream is left behind.
The basic equipment used in MRFs are conveyors & material handling equipment to move material through the system, screening equipment to sort material by size, magnetic separation to remove ferrous metals, eddy current separation to remove non-ferrous metals, air classifiers to sort materials by density, optical sorting equipment to separate plastics or glass by material composition, and baling equipment to prepare recovered material for market. Other specialized equipment such as bag breakers, shredders and sink-float tanks can also be specified as required by application.
Hope this helps
Please feel free to comment on any further queries
All the best :)
Question 9 Assignme State and discuss the role of MRFs in an Integrated Solid Waste Management...
Question/Task: Discuss the role of integrated marketing communication in international marketing. You can take a company or brand as example to explain the concept.
Through browsing the web I found a few things on Arizona’s waste management. So Arizona’s Department of Environmental Quality has a Solid Waste Program that is responsible for permitting, inspecting, and providing compliance assistance to solid waste facilities. The main functions of the Solid Waste Program include, Issuing permits, certifications and licenses to solid waste facilities, Conducting solid waste facility inspections to ensure compliance in accordance with state and federal regulations, Responding to and investigating any complaints related to solid...
QUESTION 8 What are the financial measurements that are used to evaluate solid waste minimization projects? initial investment Payback period Stock price Internal rate of return QUESTION 9
QUESTION 8 What are the financial measurements that are used to evaluate solid waste minimization projects? initial investment Payback period Stock price Internal rate of return QUESTION 9
M 2018 based on material from Air Pollution (Ch 7) and Solid Waste (Ch 9) (questions from yo on homeworl rk, etc) Il: Open book (only printed keys, etc) naterial, no access to Internet): math problems from whole semester (based h. 7: Air Pollution 1. What is CAA and what is protecting? 2. Describe primary and secondary air pollutants (example from each category) 3. What is smog and how is made? 4. What is acid rain and how is made?...
Explain in the the role of activity based system management Gele (9 miks)
2 quations
b. Briefly explain any FOUR (4) criteria of sanitary landfill site selection for the domestic solid waste management system. [CLO4:PLO7:C2] (6 marks) c. Soil contaminant is one of the issues in waste disposal. Describe what are soil contaminant, how it occurs and the effect of soil contaminant to human health.
b. Briefly explain any FOUR (4) criteria of sanitary landfill site selection for the domestic solid waste management system. [CLO4:PLO7:C2] (6 marks) c. Soil contaminant is one of...
ENVIRON 1 What types of solid waste do we produce and why do we say waste is a "human invention"? 1 True or False if we handled waste in a circular economic system rather than a linear one, we would produce less waste overall 2. Why do we say there is no waste" in nature? a. Nature does not produce toxic or unwanted material b. Nature can destroy unneeded or dangerous matter c. The waste of one organism can be...
Account for the differences between the solid state and solution
spectra of the cluster Co3(µ3-CCO2Me)(CO)9
Solid state:
Solution IR:
BRUKER 2 500 3500 1500 3000 2500 2000 1000 Wavenumber cm-1 Solution IR spectra of Co3(H3-CCO2Me) (CO)9 in petroleum spirit 1001ㅡㅡ 2109 л | 2032 90 1695 80 701 60 2047 50 40 30 2063 cm-1 2200 2000 1800 1600
BRUKER 2 500 3500 1500 3000 2500 2000 1000 Wavenumber cm-1
Solution IR spectra of Co3(H3-CCO2Me) (CO)9 in petroleum spirit 1001ㅡㅡ...
The City of Imperial Falls contracts with Evergreen Waste Collection to provide solid waste collection to households and businesses. Until recently, Evergreen had an exclusive franchise to provide this service in Imperial Falls, which meant that other waste collection firms could not operate legally in the city. The price per pound of waste collected was regulated at 20 percent above the average total cost of collection. Cost data for the most recent year of operations for Evergreen are as follows:...
1. Discuss the role of marketing research in helping Intel devise the "Intel Inside" and "Leap ahead" campaigns.2. Intel would like to increase the preference for Intel chips among PC users in the individual user as well as business user segments. Define the management decision problem.3. Define an appropriate marketing research problem corresponding to the management decision problem you identified in question 2 .4. Intel would like to gain a better understanding of how businesses select PC and network communications...