Rapid infrastructure and economic development, alongside changing lifestyles and a growing global population, have significantly increased the disposal of solid waste and wastewater. Green Technology introduces sustainable approaches to properly manage waste, lower greenhouse gas emissions, and achieve zero waste.
Four key Green Technology approaches used to solve waste issues in a clear, comparative layout.
Wastewater and solid waste management focuses on resolving the severe environmental consequences of human activities.
Unchecked waste disposal pollutes aquatic ecosystems, produces excess greenhouse gases from landfills, and depletes natural timber resources. By applying Green Technology, society can lessen landfill pressure, lower emissions, and advance toward zero waste.
Factors that increase waste. Change in lifestyle and socio-culture, rapid development in infrastructure and economy, and a growing number of global inhabitants all contribute to increased solid waste and wastewater disposal.
Paper waste and timber consumption. Around 268 million tons of paper is produced in a year. Producing just 1 ton of paper requires 2 to 4 tons of timber. Paper is also a major contributor to solid waste.
The main environmental problems caused by improper waste disposal.
Sewage, chemical wastes, and rubbish are disposed into rivers and seas, interfering with the ecosystem of rivers, seas, and surrounding areas.
The production, management, and decomposition of solid waste contribute to an increase in greenhouse gases, causing global climate change.
Improper disposal of food leftovers causes environmental pollution.
Paper waste is a major contributor to solid waste, and producing 1 ton of paper requires 2 to 4 tons of timber.
Green Technology prepares an effective platform for waste and wastewater management, successfully reducing the greenhouse effect and saving costs.
Consumers are encouraged to control paper usage by recycling paper or using paper only when necessary. Consumers are advised to prepare sufficient food for the whole family to prevent food wastage.
Since 2015, the government has encouraged all households to sort their household waste. Waste sorting reduces the disposal of recyclable materials and lessens the volume of solid waste sent to landfills.
Biological treatment of solid waste converts waste into beneficial organic substances, such as organic fertilisers. This process also converts solid waste into renewable energy (biomass) capable of replacing fossil fuels.
The 5R concept replaces the previous 3R concept. Two new 'R's are added: Refuse at the beginning and Recovery at the end. The aim of 5R is achieving zero waste.
Answer in your mind, then press “Check Answer”.
What are two socio-scientific issues caused by improper waste and wastewater disposal?
What are the two additional 'R's introduced in the 5R concept to replace the 3R concept?
How does the biological treatment process convert solid waste into useful products?
Biological treatment of waste only produces compost or fertiliser.
Besides organic fertilisers, biological processes can also convert solid waste into biomass, which serves as a renewable energy source to replace fossil fuels.
The 5R concept is just a rearrangement of the old 3R concept.
The 5R concept specifically adds 'Refuse' at the start and 'Recovery' at the end to target the goal of achieving zero waste.
1 How much timber is needed to produce 1 ton of paper?
2 What is the main aim of introducing the 5R concept (Refuse, Reduce, Reuse, Recycle, Recovery)?
3 Biological treatment converts solid waste into organic fertilisers and a renewable energy source known as which can replace fossil fuels.
4 Since the year , the government has been encouraging all households to sort their household waste to reduce waste at landfills.
Drag each Green Technology application method to the correct description or action. On a phone, tap an answer first, then tap a matching box. Tap the Answer Choices area to return a selected item.
Write the correct Green Technology application method next to each description.
Answer choices: Prevention and reduction • Sorting and recycling • Biological treatment • 5R concept
There is something wrong with this question.
