Member List

• Chan Lai Mei Loretta (23)

• Cheung Yuet Wah Williya (24)

• Chu Ying Chui Sarah (26)

• Leung Sin Yi Grace (31)

• Li Sin Ki Katie (34)

• Man Ka Yi Shelley (35)

Sources of pollutants

• Human beings

- Domestic waste

- Industrial waste

- Agricultural waste

Sources of pollutants

• Sewage without treatment

- lack of treatment facilities

- lack of infrastructure

• Insufficient control

- Illegal connections of

waste water pipes

Effects of this pollution

i) Economic loss

• Fish productivity reduce.

• Large amount of money is needed to reduce the damage on the environment.

Effects of this pollution

ii) Ecosystem disruption

• Many habitats of aquatic life are damaged and disturbed.

• Not only organisms living in

the polluted habitats, but also the whole ecosystem would be affected.

Effects of this pollution

iii) Health impacts

• Tiny organism and heavy

metal in the polluted water

may cause diseases

• Some toxic substances enter the food and affect our health.

Methods to solve this problem

• Sewage treatment is on of the best way to deal with this problem. It includes:

- Sedimentation

- Decomposition

- Fermentation

Photo of simple water treatment

• 200 sewage plants have been set up to treat different types of waste:

- Domestic

- Commercial

- Industrial

Methods to solve this problem

Opening of Ngong Ping Sewage Treatment Plant

Our suggestions to the HKSAR

• Fix up the water pipes and build up a proper network.

• Have regular pipe-check up to prevent any leakage.

• Set up law to prevent illegal connection of water pipes.

Our suggestions to the HKSAR

• Enhance the awareness of the public

• Do not dump any oil, grease, antifreeze, pesticides, fertilizers, paints, cleaners, and other toxic household products down the drain.

• Cause great biological threat to marine life.

The EndThe End

Thank you