In the context of increasing household waste in major cities, the application of effective dust and gas emission control technologies is essential to protect public health and the environment. Let’s explore further with Tan Thanh in the article below.
1. What is household waste?
Household waste mainly originates from the daily activities of households, service establishments, and residential areas. It includes a wide variety of materials used in daily life, such as food, packaging, single-use items, and consumer products. Therefore, proper classification and treatment of household waste is not only crucial for public health but also for environmental protection.
Household waste classification
Proper classification of household waste optimizes the treatment process and helps protect the environment. According to Vietnam’s Environmental Protection Law, waste can be classified as follows:
- Recyclable waste: Includes paper, plastic, metal, milk cartons, beverage cans, etc. These can be reused or sold to recycling collectors.
- Organic waste: Such as leftover food, tea grounds, and spoiled vegetables. In rural areas, this waste can be composted or used as animal feed.
- Inorganic waste: Includes non-degradable items like nylon bags, torn fabric, ceramics, etc., typically disposed of through landfilling or incineration.
- Hazardous waste: Includes batteries, accumulators, chemicals, electronic waste, etc., which require special collection and treatment systems for safe disposal.
Environmental impact of household waste
Improper management of household waste leads to significant environmental consequences. Unsorted and untreated waste results in massive landfills, clogged drainage systems, soil and water pollution, and greenhouse gas emissions such as methane – a major contributor to climate change.
Plastic waste, if not recycled, may end up in oceans, causing marine pollution and harming aquatic life. This poses a major challenge for environmentalists and waste management experts, especially those developing industrial dust filtration technologies used in recycling and waste treatment processes.
2. Current status of urban waste
“Waste generation in ASEAN continues to increase in both volume and complexity. Vietnam ranks third in urban waste production with 27 million tons in 2018, projected to reach 54 million tons by 2030. Per capita waste generation is nearly 1kg per day. According to VCCI’s 2019 Vietnam Materials Market Report, 64% of the waste is organic, followed by plastics (12%), paper (5%), metals (5%), and fabric (3%). Additionally, millions of tons of construction and demolition waste are generated annually…” (Excerpt from the Ho Chi Minh City Economic Forum 2023)
It is estimated that Ho Chi Minh City alone produces over 10,000 tons of household waste daily (excluding industrial waste), with an annual growth rate of around 10%. Since 2019, the Department of Natural Resources and Environment has planned to adjust waste classification at source using more advanced technologies, such as waste-to-energy incineration. The two latest proposals include:
- Establishing integrated Waste and Resource Management Centers in major cities like Ho Chi Minh City.
- Improving waste collection services, transfer stations, and investing in waste-to-energy plants with the goal of recycling or reusing 80% of waste.
3. Current waste treatment methods
Common household waste treatment methods include landfilling, incineration, recycling, and advanced technologies. Each has its pros and cons and is suitable for different types of waste.
Landfilling
Landfilling waste is a traditional treatment method that still accounts for a large portion of waste disposal in many areas of Vietnam, especially in provinces and cities lacking modern treatment systems. Waste is transported to centralized landfill sites and buried deep underground to minimize direct pollution. However, this method is not a long-term solution due to several reasons:
- Environmental impact: Landfilling can lead to soil and groundwater contamination, especially when waste is not properly sorted before burial. Hazardous substances in waste, such as heavy metals and chemicals, can leach into the environment, seriously affecting ecosystems and public health.
- Methane emissions: The decomposition of organic waste in landfills produces methane gas—a potent greenhouse gas that contributes significantly to climate change.
- Unsustainability: Landfills can quickly become overloaded, taking up valuable land and causing environmental sanitation issues.
Incineration
Incineration is a common waste treatment method, especially for types of waste that cannot be recycled or disposed of through landfilling. This process involves burning waste to reduce its volume and convert it into gas and ash. However, incineration is not a perfect solution due to the following reasons:
- Toxic emissions: The incineration of household waste, especially plastics and metals, can produce harmful gases such as dioxins, furans, and volatile organic compounds (VOCs), causing severe air pollution and negatively impacting human health.
- High technological requirements: To ensure the incineration process does not pollute the environment, incineration plants must be equipped with advanced gas filtration systems. This demands significant investment and complex operations.
- Energy recovery: If conducted with modern technology, incineration can help recover energy in the form of heat or electricity, easing the energy burden in urban areas. Advanced incineration plants can utilize the heat generated from the process to produce electricity or supply heating to nearby areas.
Recycling
Recycling is one of the most effective and sustainable methods of household waste treatment. It helps reduce the volume of waste sent to landfills or incineration plants while conserving natural resources and saving energy. Recyclable materials include paper, plastic, metal, glass, and fabric.
- Recycling process: Recyclable waste is collected, sorted, cleaned, and reprocessed into new products. For example, plastic can be softened and molded into new plastic products, paper can be bleached and recycled into new paper, and metal can be melted down for reuse.
- Benefits: Recycling minimizes the use of new raw materials, reduces environmental pollution, and lowers production costs. Notably, recycling plastic and paper helps ease the burden on landfills and decreases carbon emissions.
- Challenges: However, recycling requires an efficient waste collection and sorting system from the source, which remains a significant challenge in many areas of Vietnam.
Advanced waste treatment technologies
Modern household waste treatment technologies are gradually being implemented to reduce pollution and harness valuable resources from waste. Some of the most advanced technologies include:
- Biodegradation: This method uses microorganisms to break down organic waste into byproducts such as biogas or organic fertilizer. It not only reduces the volume of waste but also transforms it into a useful renewable energy source.
- Waste-to-energy incineration: Incinerators can process organic waste and generate thermal or electrical energy. Modern incineration plants use clean-burning technology to minimize toxic emissions while recovering energy from waste.
- Gasification and plasma technology: These are new waste treatment methods that apply high temperatures to convert waste into gas or reusable byproducts like syngas (synthetic gas). While still relatively new in Vietnam, these technologies show great potential for addressing the country’s growing waste problem.
4. Solutions for air pollution from household waste incineration
The application of advanced, environmentally friendly technologies to control dust, odors, and toxic gases generated from the incineration of household waste is crucial, especially in large cities like Ho Chi Minh City. These solutions help minimize pollution, protect public health, and maintain sustainable environmental development.
Current dust control, filtration, and industrial gas treatment methods are commonly applied to manage emissions from household waste incineration. These include: cyclone filtration, baghouse dust collectors, electrostatic precipitators, nano-catalytic filters, and other filtration systems. Each method offers specific benefits in reducing dust pollution and toxic emissions from the waste incineration process.
However, each waste treatment plant or area needs to be surveyed and assessed in practice to choose the appropriate solution and design the suitable filtration system. There is no one-size-fits-all filtration model for all household waste incineration plants, as each type of waste and location will have its own specific requirements and characteristics.
5. Tan Thanh – A trusted provider of polluted air treatment systems
Tan Thanh is a reputable company specializing in dust and air pollution control solutions. With over 14 years of experience, Tân Thanh supplies advanced air treatment systems to mitigate the environmental and public health impact of household waste.
Tan Thanh stands out with the following strengths:
- High Professional Expertise: Tan Thanh has a team of experienced engineers with deep knowledge in air and dust treatment technologies, ready to provide optimal solutions for each type of waste.
- High-Quality Products: Tan Thanh offers dust treatment systems that meet international standards, imported from reputable partners such as GUTSCHE, AOG, etc. The products are durable and highly effective in waste treatment.
- Custom Solutions: Tan Thanh designs and provides customized dust and gas treatment systems based on the specific requirements and conditions of each plant, optimizing efficiency and reducing costs.
- Environmental Protection Commitment: The company always focuses on protecting the environment and public health, offering solutions that reduce pollution and comply with sanitation and labor safety regulations.
- Professional After-Sales Service: Tan Thanh provides continuous maintenance, repair, and technical support services, ensuring long-term operational effectiveness for the systems.
- Competitive Pricing: With the commitment “Right technique, Competition, Timely schedule, Professional service”, Tan Thanh offers products and services at reasonable prices, helping save costs while ensuring high quality.
Tan Thanh is a trusted partner in providing solutions for air pollution and dust treatment from household waste, helping to minimize the negative impact on the environment and public health. With advanced technology, customized solutions, and professional after-sales service, Tan Thanh is committed to delivering long-term and sustainable results for waste treatment plants.
Contact Info:
- Hotline: 0917 531 007
- Email: kelvin@tatafilter.com
- Address: 50 Road No.1 Cu Xa Dien Luc, Truong Tho Ward, Thu Duc City, Ho Chi Minh City, Vietnam.
