Project | Parameter |
Material type | polymer composites |
Specification and shape | Cubes with dimensions of 10 ± 1mm, 20 ± 1mm, 30 ± 1mm, etc. (after water absorption expansion) |
Specific surface area | More than 4000 m3/m3 |
Porosity | Greater than 9 5 % |
Dosing ratio | 10 %~40 % |
Hanging time | 3~7day |
nitrification efficiency | 600~1250gNH;-N/m* Carrier · d(To the limit of oxygen conversion) |
BODs oxidation efficiency | 1000~5000gBODm” Carrier*d(To the limit of conversion) |
COD oxidation efficiency | 1000~7500gCOD/m* Carrier · d(To the limit of oxygen conversion) |
Applicable pH | 6~10 |
Temperature | 1~50℃ |
service life | Over 15 years |
Name | MBBR fluidized bed packing |
Specifications | φ25mmx4mm |
Specifications | High density polyethylene(HDPE) |
Service life | ≥15年 |
Proportion | 0.96-0.98g/L(Before hanging the film) |
Outer wall thickness | >0.4mm |
Specific surface area | Effective surface area>1200m2/m3 |
Porosity | 85% |
Other requirements
|
The outer periphery of the filler is toothed, with a tooth depth of 1mm; core There are four layers of circles to the outer circle, Roundness rate<20%; 64 honeycomb holes in the packing material |
-Technical parameter description-
(1) The filler is a biological suspension carrier filler. The effective specific surface area, shape, and performance of the biological suspension carrier filler provided by our company must meet the requirements of the Ministry of Housing and Urban Rural Development's "High Density Polyethylene Suspension Carrier Filler for Water Treatment" (CJ/T461-2014).
(2) When the biological suspension carrier filler operates normally, it is suspended in water and can grow effective microbial membranes to ensure operational efficiency. Produce using high-quality pure HDPE (high-density polyethylene) new materials, and prohibit the use of recycled materials or the addition of other components that may affect the service life. It can achieve stable and non decomposing immersion in water for a long time, and does not have toxic effects on microorganisms
(3) The area of the biological suspension carrier membrane required for the project is purchased in this bidding document, and the physical properties of the filler meet the requirements:
The material of the biological suspension carrier filler has good corrosion resistance and sufficient total effective surface area to meet the bidding requirements, ensuring sufficient biological growth.
(4) Biological suspension carrier fillers have reliable quality assurance, sufficient strength, wear resistance, and a long service life. Packaged in separate bags for easy transportation and addition to the biological pool.
(5) The compressive strength of the biological suspension carrier filler is greater than 50N/mm; The UV loss value of the biological suspension carrier filler is less than 0.06%.