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Wastewater Treatment Design Data

This document provides design parameters for a two-stage moving bed biofilm reactor (MBBR) wastewater treatment system. It includes information on influent wastewater characteristics, design flow rate, targeted effluent quality, and operational parameters for the first and second treatment stages. It also provides calculations for oxygen demand, transfer efficiency, and air requirements for aerating the two treatment tanks. Dimensions and media sizing are presented for the biological reactors in each treatment stage.

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PANDIARAJ KARUPPATHEVAR
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5K views5 pages

Wastewater Treatment Design Data

This document provides design parameters for a two-stage moving bed biofilm reactor (MBBR) wastewater treatment system. It includes information on influent wastewater characteristics, design flow rate, targeted effluent quality, and operational parameters for the first and second treatment stages. It also provides calculations for oxygen demand, transfer efficiency, and air requirements for aerating the two treatment tanks. Dimensions and media sizing are presented for the biological reactors in each treatment stage.

Uploaded by

PANDIARAJ KARUPPATHEVAR
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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General Info
Flow Rate 90 m3/d
Influent BOD 190 mg/L
Influent TKN 35 mg/L
Targeted Effluent BOD 30 mg/L
Targeted Effluent TKN 1 mg/L

First Stage
SALR first stage 6 g/m2/d
Carrier fill % 45% (value is between 30-70%)
Liquid depth 2 m
Carrier Surface area 550 m2/m3
Tank L:W ratio 1.5

Second Stage
SALR second stage 1 g/m2/d
Carrier fill % 52% (value is between 30-70%)
Liquid depth 2 m
Carrier Surface area 550 m2/m3
Tank L:W ratio 1.5

Aeration
Kg Oxygen needed per Kg BOD(1) 1.5 kg Oxygen/ kg BOD
Kg Oxygen needed per Kg NH3-N(2) 4.6 kg Oxygen/ kg NH3-N
AOR/SOR (3)
0.5
Oxygen Transfer Efficiency(4) 0.025 per 1m of diffuser depth
Oxgen content in air 0.2777 kg Oxygen/m3
Diffuser depth 1.8 m

Design
First Stage : BOD Removal
BOD Loading Rate 14400.0 g/d
Media Surface Area 2400.0 m2
Media Volume 4.4 m3

Tank Volume 9.7 m3


Width 1.8 m
Length 2.7 m
Second Stage: Nitrification
NH3-N Loading Rate 3060.0 g/d
Media Surface Area 3060.0 m2
Media Volume 5.6 m3

Tank Volume 10.7 m3


Width 1.9 m
Length 2.8 m

Aeration for BOD Removal Tank


AOR 21.600 kg/d
SOR 0.030 kg/min
Oxygen Transfer Efficiency (OTE) 5%
Air Requirement 2.40 m3/min

Aeration for Nitrification Tank


AOR 14.076 kg/d
SOR 0.020 kg/min
Oxygen Transfer Efficiency (OTE) 5%
Air Requirement 1.56 m3/min

https://www.linkedin.com/in/joyce-kreidi-7b87aa83/

https://www.udemy.com/course/on-site-domestic-wastewater-treatment-an

https://www.youtube.com/channel/UCTXhG1rT4lWWPBKGufjkxZw
https://netedu.xauat.edu.cn/jpkc/netedu/jpkc2009/szylyybh/content/wlzy/7/3/The%20Moving%20Bed%20Biofilm%

(1)
For high SRTs (which is the case of MBBR systems) supply 1.25 to 1.80 kg of oxygen per kg of BOD removed https:/
(2)
Supply 4.6 kg of oxygen per kg ammonia nitrogen removed http://site.iugaza.edu.ps/anassar/files/2013/02/WWT
(3)
The typical AOR/SOR ratio for a COARSE BUBBLE aeration system is 0.50 (https://www.academia.edu/14028569/D
(4)
The typical COARSE BUBBLE oxygen transfer efficiency is 0.75% per foot of diffuser submergence (https://www.ac
1 SCFM of air contains 0.0173 lb of oxygen which is equivalent to 0.277kg of oxygen/m3
wastewater-treatment-and-agricultural-reuse/?referralCode=1B8B65C3EB6BA6B3C308

WPBKGufjkxZw
e%20Moving%20Bed%20Biofilm%20Reactor.pdf

en per kg of BOD removed https://www.academia.edu/14028569/DIFFUSED_AERATION_DESIGN_GUIDE


u.ps/anassar/files/2013/02/WWTP-Chap-8-Oxygen-req-aeration.pdf
www.academia.edu/14028569/DIFFUSED_AERATION_DESIGN_GUIDE)
er submergence (https://www.academia.edu/14028569/DIFFUSED_AERATION_DESIGN_GUIDE)

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