Water balance on Earth

Janina – the artificial body of water in our area

• an artificial lake

• built at the turn of 40s and 50s

• surface – 1,4ha

• average depth – 1,2m

Fitness trails.

Bike lanes.

Home for many species of animals.

BREEDING

Good conditions to do sports.

It delivers industrial water for technological processes.

Jetties for fishermen.

RECREATION

Many bike lanes.

A source of drinking water for animals.

Interview with retired miner

We asked many questions.

We were very curious.

Nothing escaped our attention.

A survey with inhabitants of our estate

We found out how much people know about the body

of water called Janina.

We questioned 70 people, asking them 11 questions.

Most of people know the body of water called Janina but they do not have enough knowledge about it.

They use bike lanes in the area of the body of water.

They do not fish there.

People know sources of pollution of the body of water.

Do all members of your family know the body of water Janina?

yes, all most of them nobody knows0

10

20

30

40

50

60 57

85

Num

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f peo

ple

A trip to Water Purification Plant

LecturesSightseeing

Work record

Mechanical – biological – chemical water purification plant Gigablok: - based on the activated sludge method

- disposal of biogenes- grit chamber

- sludge higienisation facility- sludge digestion chambers

Water quality testing

light orange colour

odour-free, not transparent

after filtration – the sediment was red

pH 10

high nitrate content – 10mg/l

water polluted with heavy metals

water polluted with detergents

third class water quality

water eutrophication

Conclusions

We have learnt creative and precise solutions for the local enviroment.

We have raised our sense of responsibility for this part of Earth where we live.

We have learnt how to improve the condition of the enviroment.

We have made a poster which summarizes our work and written

an article to the locan newspaper

We have raised our sense of responsibility for the piece of

Earth we live on.

Thanks for your

attention!