Civil Engineering (CE) Exam > Civil Engineering (CE) Notes > Environmental Engineering > UASB Reactor
UASB Reactor | Environmental Engineering - Civil Engineering (CE) PDF Download
Design of upflow anaerobic sludge blanket reactor (UASB)
Figure 4.6.1: Schematic diagram of up flow anaerobic sludge blanket (UASB)
Table 4.6.1. Recommended loading on UASB reactor based on the COD concentration
Where, COD: Chemical Oxygen Demand; OLR: Organic Loading Rate; SLR: Organic Loading on Sludge Blanket; HRT: Hydraulic Retention Time.
Important Design Points
- For temperature > 200c, SRT of around 30-50 days is used.
- At equilibrium, sludge produced per day = sludge withdrawn per day
- Average concentration of sludge in UASB reactor
- Ration of height of sludge blanket to total height is ≈0.4- 0.5.
- HRT (Hydraulic Retention Time)
- Solid Retention Time (SRT
Problem 4.6.1: Given that the influent to UASB reactor has following characteristics: BOD = 350 mg/l; COD = 820 mg/l, TSS= 395 mg/l, VSS= 270 mg/l, flow rate=8000 m3/d, depth of sludge blanket=2.2 m, reactor height (including settler)=5 m, effective coefficient (ratio of sludge to total volume in sludge blanket)= 0.85.
Determine HRT for sludge age of 30 days assuming 80% BOD removal efficiency; reactor area, and organic loading on reactor and the sludge blanket.
Solution:
Reactor area required:
Reactor area required = 
Organic loading rate (OLR) = 
Organic loading rate (OLR) = 
Organic loading on sludge blanket (SLR)
The document UASB Reactor | Environmental Engineering - Civil Engineering (CE) is a part of the Civil Engineering (CE) Course Environmental Engineering.
All you need of Civil Engineering (CE) at this link: Civil Engineering (CE)
|
14 videos|99 docs|98 tests
|
FAQs on UASB Reactor - Environmental Engineering - Civil Engineering (CE)
| 1. What is a UASB reactor? |  |
Ans. A UASB (Upflow Anaerobic Sludge Blanket) reactor is a type of anaerobic wastewater treatment system. It operates by allowing wastewater to flow upwards through a sludge blanket where microorganisms break down organic matter in the absence of oxygen.
| 2. How does a UASB reactor work? | |
Ans. In a UASB reactor, wastewater enters the bottom of the reactor and flows upwards through a sludge blanket. The sludge blanket contains anaerobic bacteria that convert organic matter in the wastewater into biogas (methane and carbon dioxide) and biomass. The biogas is collected and can be used as an energy source, while the treated wastewater exits the reactor from the top.
| 3. What are the advantages of using a UASB reactor? | |
Ans. Some advantages of using a UASB reactor include:
- High treatment efficiency: UASB reactors can remove a significant amount of organic matter from wastewater, resulting in effective treatment.
- Energy generation: The biogas produced in the reactor can be used as a renewable energy source.
- Low operational costs: UASB reactors require minimal energy and chemical inputs, making them cost-effective to operate.
- Compact design: UASB reactors have a small footprint, making them suitable for locations with limited space.
- Minimal sludge production: UASB reactors produce less sludge compared to other wastewater treatment systems, reducing disposal and handling costs.
| 4. What types of wastewater can be treated using a UASB reactor? | |
Ans. UASB reactors are commonly used to treat various types of wastewater, including municipal wastewater, industrial wastewater, and agricultural wastewater. They can effectively remove organic pollutants, nutrients, and suspended solids from these wastewater streams.
| 5. Are UASB reactors environmentally friendly? | |
Ans. Yes, UASB reactors are considered environmentally friendly due to several reasons:
- They produce biogas, a renewable energy source, which can replace fossil fuels and reduce greenhouse gas emissions.
- UASB reactors can remove organic pollutants from wastewater, preventing their release into the environment and minimizing water pollution.
- The low operational costs and minimal sludge production of UASB reactors contribute to sustainable and cost-effective wastewater treatment.
Related Exams
About this Document
4.93/5
Rating
Jan 17, 2025
Last updated
Document Description: UASB Reactor for Civil Engineering (CE) 2025 is part of Environmental Engineering preparation.
The notes and questions for UASB Reactor have been prepared according to the Civil Engineering (CE) exam syllabus. Information about UASB Reactor covers topics
like and UASB Reactor Example, for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for UASB Reactor.
Introduction of UASB Reactor in English is available as part of our Environmental Engineering
for Civil Engineering (CE) & UASB Reactor in Hindi for Environmental Engineering course.
Download more important topics related with notes, lectures and mock test series for Civil Engineering (CE)
Exam by signing up for free. Civil Engineering (CE): UASB Reactor | Environmental Engineering - Civil Engineering (CE)
Description
Full syllabus notes, lecture & questions for UASB Reactor | Environmental Engineering - Civil Engineering (CE) - Civil Engineering (CE) | Plus excerises question with solution to help you revise complete syllabus for Environmental Engineering | Best notes, free PDF download
Information about UASB Reactor
In this doc you can find the meaning of UASB Reactor defined & explained in the simplest way possible. Besides explaining types of
UASB Reactor theory, EduRev gives you an ample number of questions to practice UASB Reactor tests, examples and also practice Civil Engineering (CE)
tests
Related Searches
UASB Reactor | Environmental Engineering - Civil Engineering (CE)
,mock tests for examination
,ppt
,study material
,Viva Questions
,Extra Questions
,practice quizzes
,video lectures
,MCQs
,shortcuts and tricks
,past year papers
,Previous Year Questions with Solutions
,UASB Reactor | Environmental Engineering - Civil Engineering (CE)
,Important questions
,Summary
,Objective type Questions
,Semester Notes
,Free
,Exam
,UASB Reactor | Environmental Engineering - Civil Engineering (CE)
,Sample Paper
,
Additional Information about UASB Reactor for Civil Engineering (CE) Preparation
UASB Reactor Free PDF Download
The UASB Reactor is an invaluable resource that delves deep into the core of the Civil Engineering (CE) exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the UASB Reactor now and kickstart your journey towards success in the Civil Engineering (CE) exam.
Importance of UASB Reactor
The importance of UASB Reactor cannot be overstated, especially for Civil Engineering (CE) aspirants.
This document holds the key to success in the Civil Engineering (CE) exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
UASB Reactor Notes
UASB Reactor Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to UASB Reactor.
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, UASB Reactor Notes on EduRev are your ultimate resource for success.
UASB Reactor Civil Engineering (CE) Questions
The "UASB Reactor Civil Engineering (CE) Questions" guide is a valuable resource for all aspiring students preparing for the
Civil Engineering (CE) exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study UASB Reactor on the App
Students of Civil Engineering (CE) can study UASB Reactor alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the UASB Reactor,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of UASB Reactor is prepared as per the latest Civil Engineering (CE) syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup