1. Submitted By – Vidhi Sirothia , 0901CE201127
“Trickling Filter”
End-Sem Proficiency Exam
“Waste Water Engineering”
2. Overview
• A trickling filter is a type of wastewater treatment process that uses
a bed of media, such as rocks or plastic material, to promote the
growth of microorganisms that break down organic matter in
wastewater.
• Methods: In a trickling filter, wastewater is distributed over the
media through a rotating arm or spray nozzles. The microorganisms
attached to the media degrade the organic matter into simpler
forms through biological oxidation.
3. Description
Trickling filter is an attached growth process i.e. process in which
microorganisms responsible for treatment are attached to an inert packing
material.
Packing material used in attached growth processes include rock, gravel, slag,
sand, redwood, and a wide range of plastic and other synthetic materials.
6. Classification
The efficiency of a trickling filter is typically measured by the biological
oxygen demand (BOD) removal, which is calculated using the formula:
BOD removal (%) = [(BOD in influent - BOD in effluent) / BOD in influent] x 100
7. Advantages of Trickling Filter
• Effective Treatment: Trickling filters are known for their high removal
efficiency of organic matter and BOD from wastewater, making them a reliable
treatment option for municipal and industrial wastewater.
• Low Energy Consumption: Trickling filters typically require low energy
input compared to other wastewater treatment processes, making them cost-
effective and environmentally friendly.
• Simple Operation and Maintenance: Trickling filters are relatively simple
to operate and maintain, with minimal equipment and components, reducing
the need for complex systems or chemicals.
8. MERCURY
It’s the closest planet to the Sun and the
smallest in the Solar System
VENUS
Venus has a beautiful name and is the second
planet from the Sun
ABOUT THE DISEASE
MARS
Despite being red, Mars is actually a cold place.
It’s full of iron oxide dust
Odour and Noise:
Trickling filters may produce unpleasant odors due to the
decomposition of organic matter by microorganisms.
Media Clogging:
The media in trickling filters can become clogged over time,
reducing the effectiveness of the treatment process and
requiring regular cleaning or replacement
Disadvantages of Trickling Filter
Limited Nutrient Removal:
Trickling filters may not effectively remove nutrients such as
nitrogen and phosphorus from wastewater, requiring
additional treatment processes for nutrient removal.
9. Applications of Trickling Filter
• Municipal Wastewater Treatment: Trickling filters are commonly
used in municipal wastewater treatment plants to treat domestic
wastewater before discharge into the environment.
• Industrial Wastewater Treatment: Trickling filters are also
employed in various industries, such as food processing, chemical
manufacturing, and pulp and paper, for the treatment of industrial
wastewater.
• Rural and Remote Areas: Trickling filters can be a viable option for
wastewater treatment in rural or remote areas where access to
advanced treatment technologies may be limited.
10. Improved Media and Design:
• Advancements in media materials and design have led to improved
trickling filter systems, including the use of plastic media that provides
higher surface area for increased microbial attachment and better
treatment performance.
• Integrated Treatment Processes: Trickling filters can be combined with
other treatment processes, such as activated sludge or biofilm reactors,
to enhance the overall treatment efficiency and nutrient removal
capabilities.
• Substitute Technologies: In recent years , membrane bioreactors
(MBRs) and sequencing batch reactors (SBRs), have gained popularity
as substitutes for trickling filters in some applications due to their higher
treatment efficiency and versatility.
11. Conclusion
• Trickling filters are a well-established and effective wastewater treatment
process for the removal of organic matter and BOD.
• They offer advantages such as low energy consumption, simple
operation, and low maintenance requirements.
• However, they also have limitations, including potential odor and noise
issues, media clogging, and limited nutrient removal capabilities.
• Advances in media materials, design, and integration with other treatment
processes have improved trickling filter systems, but alternative
technologies may be considered in certain situations.
12. CREDITS: This presentation template was created
by Slidesgo, including icons by Flaticon, and
infographics & images by Freepik
THANKS!
