Water &Waste Management

Subtopic: Waste TreatmentBY: CHANTEL DAWKINS

NICOLA MORRISON

• Decomposition is the break down of organic matter, by bacteria by organisms. Decomposition in waste treatment takes place mainly in landfills. Landfills are sites for disposal of waste materials by burial.

Decomposition

Respiration

• Is the chemical process by which energy is released from the breaking down of glucose or other food substances. Respiration has to be present in the breaking down of waste materials, because organisms such as bacteria get their energy from this type of respiration especially if they are classified as domestic waste which is mainly from the household. Example: paper, plastic and waste food materials.

Types of Wastes

Industrial Waste

Solid Waste

Agricultural Waste

Solid waste

Medical waste

Hazardous Waste

Solid Waste

Plastics

Bottles Containers

Paper

Cans

Solid Waste

• Solid are any discarded materials, which mainly include house hold waste with the addition of commercial waste.

Example of how Solid Waste are treated # 1

Landfills

Example of Solid Waste: Waste Treatment for Paper

• Recycling- Hand-made recycling

Step 1 Step 2 Step 3

Step 4 Step 5 Step 6 Step 7

Paper treatment recycling process

Step 8

After work

Can be use for post cards ,note books etc

Paper is set to dry

Agricultural Waste

scrap metal

Tires Building waste Pesticide

Manure

Waste treatment for TiresTyres :Silage clamping

Silage Clamp

• Silage is a form of conservation of grass produced by farmers. This grass is feed to cattle and sheep. The tires are placed on top of the grass so that the moisture is being kept in side the grass and to conserve them especially in winter when less grass are grown.

Example: Waste treatment of Sharps (needles and knives)

A sharp container

Safety box

An incinerator

Hazardous Waste

Ignitable Waste: Examples: Waste oilsUsed solventsOrganic cleaning materialsPaint wastes

Corrosive Waste: Examples: acids from metals cleaning processes

Reactive:Examples: Peroxide solutions Hypochlorite solutions or solids

Toxic Waste

Waste pesticides

Example of waste treatment: Toxic (liquid form)

• This may be pumped deep underground, by deep-well injection. The well must be drilled below aquifers, into porus rocks separated by imperious clay.

Industrial Waste

Scarps

Sludge Ash ( from combustion)

Waste gases

Example of waste treatment: Scraps from factories after manufacturing (paper, plastics, mental)

These waste is treated by either: Reduce, reuse and recyclingReduction methodsTreatment methodsIncineration systemsLandfilling

Recycling

• Recycling is processing used materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution and water pollution by reducing the need for "conventional" waste disposal, Recycling is a key component of modern waste reduction.

Incineration

• Hospital waste incineration involves the application of combustion processes under controlled conditions to convert wastes infectious and pathological material to inert mineral residues and gases. The incineration systems are the same than other type of wastes.