Aqua por la vida Introduction about water BBS Semarang

Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

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Page 1: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Aqua por la vida

Introduction about waterBBS Semarang

Page 2: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

What is water?Generally speaking, water is

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of

the fluids of living organisms.

Page 3: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

What is water?Chemically speaking, water is made up of two hydrogen atoms bonded

with one oxygen atom

2H+(g) + O2-

(g) H2O (l)

Page 4: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

What is water?

Water dissolves more substancesthan any other liquid, and hastherefore been nicknamed“the universal solvent.”

Page 5: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Importance of Water

Page 6: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Importance of Water-The human body is 75 % water

-Water makes up 50 ~ 90% of the weight of living things

-Water contains no calories and can serve as an appetite suppressant

-Water also helps the body metabolize stored fat

Page 7: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Importance of Water• Used for drinking, cooking, bathing, washing, cleaning, agricultural cultivation, farming, transportation, living and electricity•Helps us from dehydration•To maintain stable internal body environment•Important organs like the kidneys, brain, and heart cannot function properly without water

Page 8: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Sources of Water in Semarang

-From the river-From the Deep Well-From springs

Page 9: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Reasons why water is not safe for drinking :

• pollution from chemical factories• pollution from the rubbish• excessive mineral deposits• old leaking pipes that contain rusted iron

Page 10: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Water needs to be purifiedbefore it can be safely

consumed.

Page 11: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Water purification generally means

freeing water from any kind of

impurity it contains, such ascontaminants or micro

organisms

Page 12: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Stages in Water Purification

Page 13: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Stages in Water Purification

AerationIn some water treatment plants,

the first step is aeration. First, raw water goes to aeration tanks where large quantities of air are injected into, and bubble through the raw water. Aeration can reduce tastes and odors and can oxidize soluble iron.

Page 14: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Stages in Water Purification

Flash MixingThe next step after aeration is flash

mixing.One or more chemicals are mixed into

theraw water to neutralize or removespecific impurities found in the raw

water

Stages in Water Purification

FlocculationAfter flash mixing, the mixing of the

chemicals and the raw watercontinues but at a slower pace.

The added chemicals react with theimpurities in the raw water and

remove the dissolved impurities by reactingwith the impurities and forming small particles

of solid matter suspended in the water

Page 16: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Stages in Water Purification

SettlingGravity and time are all that is

neededto remove the flock from the water.

The water is sent to a clarifier(settling basin) where the flock isallowed to settle out of the water

Page 17: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Stages in Water Purification

FiltrationAllowing the partially treated water

to settle may remove some, but not all,of the floc. The water usually is then

filtered through sand to removeremaining solids

Page 18: Generally speaking, water is a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the

Stages in Water Purification

AdditivesAdditional chemicals may be mixed inthe water before it leaves the water

treatment plant. Chlorine is usually addedat this time, not only to disinfect the waterbut to provide a level of chlorine sufficientto help prevent future growth of pathogens