Indoor decoration materials can release harmful pollutants that negatively impact the indoor environment. This type of pollution, originating directly from the renovation process, is commonly referred to as home decoration pollution. If pollutant levels remain high for an extended period, it can lead to health issues such as discomfort, respiratory problems, and even long-term illnesses. So, how can you effectively eliminate these pollutants? Let’s explore some practical solutions.
Part 1: Common Pollutant – Formaldehyde
As the economy grows and living standards improve, more and more materials are being used in home decoration. Among them, formaldehyde is one of the most well-known indoor air pollutants. It is a chemical substance that can cause irritation to the skin, eyes, and respiratory system. High concentrations of formaldehyde can lead to severe symptoms like breathing difficulties, eye irritation, headaches, and even long-term damage.
Over-decorating or over-renovating can increase the risk of pollution accumulation. For example, if the lower layer of a board has quality issues, it may release formaldehyde through the upper wooden floor. The maximum allowable concentration of free formaldehyde in public areas is 0.12 mg/m³, while in living spaces it should not exceed 0.08 mg/m³.
Many common materials contain formaldehyde, including insulation materials, foam, plywood, fiberboard, adhesives, carpets, wallpapers, paints, plastic wall panels, and more. To reduce exposure, consider the following methods:
1. Activated carbon adsorption: Place several activated carbon discs in each corner of your home.
2. Ventilation: Open windows regularly to allow fresh air to circulate.
3. Plants: Adding 2-3 potted plants around the room can help absorb some toxins.
4. Professional treatment: Hire a certified team with specialized tools to remove pollutants effectively.
Part 2: Common Pollutant – Benzene
Another major indoor pollutant is benzene, which is often found in paints, coatings, adhesives, and solvents used during renovation. Short-term exposure to high levels of benzene can cause central nervous system depression, leading to dizziness, nausea, and even life-threatening conditions like respiratory failure.
Benzene is also linked to serious health risks such as leukemia and aplastic anemia. Long-term exposure may result in irritation of the eyes, skin, and upper respiratory tract. Indoor benzene levels should not exceed 0.09 mg/m³.
To prevent benzene pollution, choose water-based wood finishes instead of oil-based ones. Avoid sealing walls with paint in ways that trap pollutants inside. Also, avoid using furniture made from low-quality particleboard or MDF, as they tend to emit harmful chemicals over time.
After renovation, ensure good ventilation by using air purifiers, opening windows when outdoor air is clean, and allowing time for pollutants to dissipate before moving in. If you suspect severe indoor air pollution, consult a professional testing service to assess the air quality and take necessary actions.
Diesel Engine
Diesel engine is an engine that burns diesel fuel to obtain energy release. The working process of a diesel engine is actually the same as that of a gasoline engine, and each working cycle also goes through four strokes: air intake, compression, work and exhaust.
The diesel engine sucks pure air in the intake stroke. When the compression stroke is nearing the end, the diesel fuel is increased to more than 10MPa by the fuel injection pump, and is injected into the cylinder through the fuel injector, and mixed with the compressed high-temperature air in a very short time to form a combustible mixture. Due to the high compression ratio of the diesel engine (generally 16-22), the air pressure in the cylinder can reach 3.5-4.5MPa at the end of compression, and the temperature is as high as 750-1000K (while the mixture pressure of the gasoline engine at this time will be 0.6-1.2MPa, and the temperature will reach 600-700K), which greatly exceeds the autoignition temperature of diesel. Therefore, after the diesel fuel is injected into the cylinder, it mixes with the air in a very short time and immediately ignites and burns on its own. The air pressure in the cylinder rises sharply to 6-9MPa, and the temperature also rises to 2000-2500K. Driven by high-pressure gas, the piston moves downward and drives the crankshaft to rotate to do work, and the exhaust gas is also discharged into the atmosphere through the exhaust pipe.
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