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HUMAN BIOLOGY

HUMAN BIOLOGY. WATER POLLUTION in HONG KONG. Causes of Water Pollution. i) Different Kinds of Sources

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HUMAN BIOLOGY

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  1. HUMAN BIOLOGY WATER POLLUTION in HONG KONG

  2. Causes of Water Pollution i) Different Kinds of Sources There are many sources of water pollution, including household, commercial, industrial, farming and natural sources etc. Moreover, these sources are close to one another and in huge amount. Dredging and sea dumping activity can also lead to water pollution.

  3. ii) Lack of Infrastructure Sewage from Hong Kong lacks of treatment facilities. Currently, only 34% of Hong Kong's urban sewage receives primary treatment or better. In countryside, only septic tanks are provided. There is no sewerage provision for villages and squatters. iii) Insufficient Control In city, there are some illegal connections of waste water pipes to storm-water pipes. In this way, the waste water will be discharged directly into sea without treatment.

  4. Impacts of Water Pollution Environment - As water bodies are polluted, many habitats of aquatic life are damaged and disturbed. The whole ecosystem would also be affected. - Red tide is one of the consequences of water pollution. The algae can absorb a massive amount of oxygen in the water. This process will also used up a large amount of oxygen in the water.

  5. Health impacts - Drinking water containing pollutants would cause illnesses in human.- Consumption of seafood accumulated with pollutants, such as heavy metals, would also affect our health. In half an hour will have lip, tongue and limb paralysis, headache and feel dizzy for those who have been poisoned.

  6. Existing measures • Sewage Master Plan- set up a blueprint of the sewerage infrastructure required to collect the sewage and direct it to the treatment facilities. • Ten WaterControl Zones- In order to maintain Water Quality Objectives

  7. Strategic Sewage Disposal Strategy- intended to collect sewage from around the harbour, transport it by deep tunnels to a sewage treatment plant on Stonecutters Island for Chemically-enhanced Primary Treatment (CEPT) and discharge the treated effluent through an outfall to the South China Sea.

  8. Suggestions • Individual operators, such as restaurants and factories, can help to make a difference by ensuring they follow anti-pollution laws. • Residents should co-operate with efforts to connect their buildings to sewers. They can also try to reduce their consumption of water, thereby reducing the amount of sewage that needs treatment.

  9. END

  10. Group Members • 5B Lai Mei Yu • 5B Leung Hoi Yi • 5C Cheung Hiu Wun • 5C Chung Wai Han • 5C Fung Ching Fung

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