Packed bed
Trickling Filter: Packed Bed Bioreactor Basis
A trickling biological filter is a type of wastewater treatment system where microbial growth occurs on a fixed medium. The question asks which bioreactor configuration serves as its basis.
Understanding Bioreactor Configurations
Let's examine the options in relation to a trickling filter:
- Stirred Tank: This configuration uses mechanical agitation to mix contents. It is not suitable for the fixed-film process of a trickling filter.
- Packed Bed: This consists of a static bed of packing material (e.g., rocks, plastic) providing a large surface area for microbial colonization (biofilm). Wastewater trickles over this surface. This directly matches the structure of a trickling filter.
- Air Lift: This configuration uses injected air for both mixing and aeration. While aeration is important, it doesn't define the fundamental structure of a trickling filter.
- Fluidized Bed: Here, solid particles are suspended by upward fluid flow. This is different from the stationary media in a trickling filter.
Conclusion on Configuration
The design and operation of a trickling biological filter are fundamentally based on the Packed bed bioreactor configuration, due to the use of a static medium that supports biofilm growth.
Important Questions from Heterocyclic Chemistry
The major product formed in the following reaction sequences is
- The reaction(s) that yield(s) 2-methylquinoline as the major product is (are)
The major products M and N formed in the following reactions are
The structures of the major products W and X in the following synthetic scheme are
An enzyme converts substrate A to product B. At a given liquid feed stream of flow rate $25 \ L.min^{-1}$ and feed substrate concentration of $2 \ mol.L^{-1}$, the volume of continuous stirred tank reactor needed for 95% conversion will be ____________________ L.
Given the rate equation: $-r_A = \frac{0.1C_A}{1+0.5C_A}$
where $-r_A$ is the rate of reaction in $mol.L^{-1}.min^{-1}$ and $C_A$ is the substrate concentration in $mol.L^{-1}$
Assumptions: Enzyme concentration is contant and does not undergo any deactivation during the reaction.
