Our glass fiber reinforced plastic (GFRP) sewage pool covers offer numerous advantages, including strong corrosion resistance, lightweight yet high strength, excellent design flexibility, easy installation, vibrant colors, attractive appearance, resistance to aging, and a long service life.
1. Strong Corrosion Resistance: This product is made with a base material of acid and alkali-resistant, corrosion-proof resin.
2. Enhanced fire-retardant properties: High-quality flame-retardant agents can be added according to customer requirements, ensuring excellent fire resistance with an oxygen index greater than 26.
3. Lightweight & High Strength, Easy to Install: This product has a density just 1/3 to 1/4 of steel products, high solidification, heavy load-bearing capacity, high strength, suitable for large-span pools. Additionally, the lid can be divided into several small pieces for easy transportation and installation.
4. Aesthetically Pleasing and Durable: This product features an anti-aging, weather-resistant, and UV-resistant coating resin on the surface, ensuring a smooth, attractive appearance with vibrant colors and a lifespan of over twenty years.
5. Low operational and maintenance costs, easy to inspect: This product boasts high corrosion resistance and aging resistance, eliminating the need for regular maintenance like metal products, significantly reducing costs. The hood features observation windows and a maintenance door at the end for easy access, allowing workers to repair without disrupting the equipment's normal operation.
6. Highly customizable: Product sizes can be flexibly designed according to the specific conditions of the on-site pond, with shapes available in arched lids, round lids, flat lids, and more.
7. Color variety: Can produce products in various colors such as blue, green, yellow, and white, catering to customer needs and achieving an aesthetic effect in the environment.
The malodorous gas is collected from the odor-elimination structures and sent together with the main odor conveyance pipeline to the upper section of the biological washing stage. The atomizing nozzles fully atomize the water, which then mixes with the air stream, quickly reaching a saturated humidity state in the gas to be treated. Some of the malodorous molecules in the gas are absorbed by the washing liquid, creating favorable conditions for the stable operation of the biological filtration process.
After being processed through the biological washing stage, the gas enters the biological filtration stage from bottom to top. As the gas moves upwards, the odor molecules in the gas pass through the packing layer, making full contact with the biofilm formed on the surface of the packing. These odor molecules are then oxidized and decomposed by microorganisms, converting them into carbon dioxide, water, minerals, etc., thereby achieving the purpose of odor purification.
The treated gas passes through a 15-meter exhaust pipeline after being processed by a biological filter unit, meeting emission standards.
Process Principle and Features: The biological deodorization device is a widely researched, mature technology, and a commonly used method for treating malodorous gases in practice. Its processing process involves the gas containing malodorous substances being pre-treated with dust removal, humidification, or cooling, and then passing through the filter bed from bottom to top. During this passage, the malodorous substances transfer from the gas phase to the water-microorganism mixed phase (biological layer) in the filter layer, where they are decomposed by the metabolic action of microorganisms attached to the filter material. This method primarily utilizes the biochemical action of microorganisms to decompose pollutants into harmless substances. Microorganisms use organic matter as the matrix required for their growth and reproduction, converting large molecules or complex organic substances into simple inorganic substances such as water and carbon dioxide through heterotrophic action and subsequent oxidation decomposition. Simultaneously, through assimilative action and utilizing the energy produced during the heterotrophic process, the biological bodies of the microorganisms grow and reproduce, creating favorable conditions for further enhancing their ability to process organic substances. The essence of pollutant removal is the absorption, metabolism, and utilization of organic matter as nutrients by microorganisms. This process is a complex one, composed of physical, chemical, physicochemical, and biochemical components. It can be simplified to the following expression:
Volatile organic compounds vary in composition, leading to different decomposition products. Different types of microorganisms also yield diverse metabolic by-products. For nitrogen-free organic substances like carboxylic acids and formaldehyde, their final products are carbon dioxide and water. Sulfur-containing malodorous components are oxidized and decomposed into sulfate ions and sulfur under aerobic conditions. Nitrogenous malodorous substances like amines release NH3 through ammonification, which can then be oxidized to nitrite ions by nitrosating bacteria, and further oxidized to nitrate ions by nitrifying bacteria.
