Application of Green Technology in Management of Industrial Wastes

 

Definition of Green Technology
Technology or application developed to minimise the negative effects of harmful human activities

 

Green Technology sectors in Malaysia

Sector Examples of application
Energy supply

Renewable energy such as;

  • solar
  • hydro
  • geothermal
  • wind
Transportation Vehicles using alternative fuels
Buildings Use of environmentally friendly building materials and energy saving buildings
Waste and Wastewater Management Recycling and Landfill Leachate Treatment Method
Agriculture and Forestry Use of compost and forest preservation
Industry Use of energy efficient tools and technology

 

Green Technology in Waste and Wastewater Management

Green Technology approaches in waste and wastewater management
Water disposal
Disposal site management
Wastewater Treatment
 

Waste Management

  • Rapid developments and growth in population have contributed to large quantities of generated solid waste or rubbish.
  • If not properly managed, the quality of life and public health will be affected.
  • Waste management does not only involve local authorities, but all communities also need to play a role in ensuring the effectiveness of waste management, especially solid wastes.
  • Leachate is contaminated liquid produced from water leached from solid waste.
 
Green Technology in various stages of waste management
 

Wastewater Management

  • Wastewater is a liquid waste that consists of human waste, food waste, oil and chemicals.
  • Wastewater can be divided into;
    • domestic wastewater
    • stormwater runoff
    • industrial wastewater.
  • Compared to domestic wastewater and stormwater runoff, industrial wastewater may contain;
    • acrylonitrile
    • methylbenzene
    • toluene
    • heavy metals, such as arsenic, mercury and lead.
  • These hazardous chemicals are difficult to decompose biologically and require more systematic treatments so that they will not pollute the environment nor affect human health.
  • Landfill Leachate Treatment Method by using the electrolysis principle, which is also known as electrocoagulation process, is a Green Technology approach that can be used to treat wastewater, including industrial wastewater.
  • Carbon or copper electrodes are used while wastewater is the electrolyte in the electrocoagulation process.
  • Pollutants will form flocs and can be isolated from water and then removed as sludge.
  • After proper treatment, sludge can be used as fertilisers for the agricultural sector or disposed of by appropriate methods depending on the composition of the materials contained in sludge.
  • Wastewater that has been treated can be reused for crop irrigation, or discharged as effluent.
 
Wastewater treatment process

 

Importance of Green Technology

  • A cleaner source of energy
  • More effective waste management
  • Quality of life increases
  • Driving new innovations
  • Mitigating global warming 

Application of Green Technology in Management of Industrial Wastes

 

Definition of Green Technology
Technology or application developed to minimise the negative effects of harmful human activities

 

Green Technology sectors in Malaysia

Sector Examples of application
Energy supply

Renewable energy such as;

  • solar
  • hydro
  • geothermal
  • wind
Transportation Vehicles using alternative fuels
Buildings Use of environmentally friendly building materials and energy saving buildings
Waste and Wastewater Management Recycling and Landfill Leachate Treatment Method
Agriculture and Forestry Use of compost and forest preservation
Industry Use of energy efficient tools and technology

 

Green Technology in Waste and Wastewater Management

Green Technology approaches in waste and wastewater management
Water disposal
Disposal site management
Wastewater Treatment
 

Waste Management

  • Rapid developments and growth in population have contributed to large quantities of generated solid waste or rubbish.
  • If not properly managed, the quality of life and public health will be affected.
  • Waste management does not only involve local authorities, but all communities also need to play a role in ensuring the effectiveness of waste management, especially solid wastes.
  • Leachate is contaminated liquid produced from water leached from solid waste.
 
Green Technology in various stages of waste management
 

Wastewater Management

  • Wastewater is a liquid waste that consists of human waste, food waste, oil and chemicals.
  • Wastewater can be divided into;
    • domestic wastewater
    • stormwater runoff
    • industrial wastewater.
  • Compared to domestic wastewater and stormwater runoff, industrial wastewater may contain;
    • acrylonitrile
    • methylbenzene
    • toluene
    • heavy metals, such as arsenic, mercury and lead.
  • These hazardous chemicals are difficult to decompose biologically and require more systematic treatments so that they will not pollute the environment nor affect human health.
  • Landfill Leachate Treatment Method by using the electrolysis principle, which is also known as electrocoagulation process, is a Green Technology approach that can be used to treat wastewater, including industrial wastewater.
  • Carbon or copper electrodes are used while wastewater is the electrolyte in the electrocoagulation process.
  • Pollutants will form flocs and can be isolated from water and then removed as sludge.
  • After proper treatment, sludge can be used as fertilisers for the agricultural sector or disposed of by appropriate methods depending on the composition of the materials contained in sludge.
  • Wastewater that has been treated can be reused for crop irrigation, or discharged as effluent.
 
Wastewater treatment process

 

Importance of Green Technology

  • A cleaner source of energy
  • More effective waste management
  • Quality of life increases
  • Driving new innovations
  • Mitigating global warming