In wastewater and sludge treatment systems, biological deodorization is a widely used odor control process. This process primarily utilizes the metabolic actions of microorganisms for deodorization. Depending on the design, it can take the form of a filter pond or a tower. Beyond the structural variations, the main difference lies in the fill material, which leads to variations in treatment effectiveness.
The material primarily uses carbon-based filler, with a proportion of not less than 50%, and a specific surface area greater than 400 m2/g. Proof materials for the specific surface area are provided, and it is mixed with a certain proportion of ceramic beads, pine bark, or volcanic rock, etc. The filler should have measures and functions to adjust pH levels, prevent acidification, and maintain good permeability and structural stability. It should create an environment conducive to adsorbing pollutants and promoting microbial growth. The filler should be non-rotten and possess excellent adsorption capabilities to ensure microbial growth.
Prior to the biofilter's activation, the media must be treated with a solution containing specialized microbial strains.
Biofill has a normal service life of over 10 years.
The biofiller's shape and arrangement are designed to minimize or avoid gas short-circuiting within the deodorization unit. The volume of the biofiller provides ample contact area and time for effective biological degradation. It is equipped with appropriate nutrients and buffers to achieve the intended function, without the need for any additional nutrient solutions during use. The biofiller features measures and capabilities to regulate pH levels without the addition of acidic or alkaline liquids.
The media is non-degradable, absorbent, and promotes the growth of microorganisms and biofilm formation, featuring high porosity and strong adsorption capacity. The biological media itself is acid and alkali resistant, and can regulate the pH, eliminating the need for additional pH adjustment solutions.
The composite filler features the following characteristics:
1) Acid-resistant corrosion; won't cake up over time or rot on its own.
Under long-term use, no compression will occur, ensuring that the pressure loss of the biofilter bed remains stable under continuous operation conditions.
3) Can effectively store all the nutrients required for microbial growth.
4) Free of breathable components, it is non-sticky and won't rot, thus eliminating any odor.
5) Due to the unique shape and even distribution of the bio-filler, it ensures no gas short-circuiting within the deodorization unit. The volume of bio-filler used provides ample contact area with the odor and sufficient contact time for effective biological degradation.
6) Excellent moisture retention properties, thus promoting the enrichment and growth of microorganisms.
7) Maintaining a constant pH level is beneficial for microbial growth and activity retention.
The bio-composite filling material is designed for a lifespan of over 10 years and exhibits minimal overall pressure loss after long-term operation.
