Calculation of MBBR Moving bed bio reactor || Sewage (Wastewater) treatment plant calculation
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- เผยแพร่เมื่อ 4 ก.ค. 2024
- Calculation of MBBR Moving bed bioreactor || Sewage (Wastewater) treatment plant calculation: The MBBR processes are used in municipal sewage treatment for BOD removal and nutrients removal.
The reference to this video is "Metcalf Eddy, wastewater engineering, 4th edition, chapter 5".
Moving Bed Biological Reactor (MBBR) is based on the biofilm carrier elements. Several types of synthetic biofilm carrier elements have been developed. These biofilm carrier elements are floated in the mixed liquor in the aeration tank and are kept floating by the air from the diffusers. They have a tendency to accumulate at the top zones. Hence wall-mounted mixers propel the media downwards so that they again float and are in circulation in the mixed liquor. They are retained by suitably sized sieves at the outlet.
This process is intended to enhance the activated sludge process by providing a greater biomass concentration in the aeration tank and thus offer the potential to reduce the basin volume requirements. They have also been used to improve the volumetric nitrification rates and to accomplish the denitrification in aeration tanks by having anoxic zones within the biofilm depth. Because of the complexity of the process and issues related to understanding the biofilm area and activity, the processes design is empirical. There are now more than 10 different variations of the processes in which a biofilm carrier material of various types are suspended in the aeration tank of the activated sludge process. There are many examples of such activated sludge treatment process with suspended biofilm carrier in the world.
Advantages:
i. These processes can enhance the activated sludge process by providing a greater biomass concentration in the aeration tank and thus offer the potential to reduce the basin size requirements.
ii. Packing materials can maintain the concentration of nitrifying bacteria in the aerobic tank at a high level, and the nitrification reaction proceeds efficiently. Hence, these processes can improve the volumetric nitrification rates and accomplish the denitrification in aeration tanks by having anoxic zones within the biofilm depth.
iii. These processes can be used for the upgrading of existing STP, especially when space is an issue.
iv. These processes can upgrade the plant by reducing the solids loading on the existing sedimentation tank
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Meenu you're a star . Good presentation
This video is very helpful. Thanks for the effort.
Thanks
Hi mam, many thanks for this video. It really helps for me.
very good presentation.
So much information ❤️👍
Praiseworthy Initiative..
Thanks
Very Good Presentation
You are really doing great job.... Be continue... I wish 🙏🙏
Thank you
Good presentation.
You are doing very good thing for the society... Keep it up and make some more videos regarding STP and wtp
Thanks. Good presentation
Thanks for appropriation, keep watching my channel for more information on wastewater treatment processes.
Nice work, MBBR tank maximum holding time must be 6 - 8 hours but here 2 hours holding the tank, is sufficient this volume 50m3 for 500 kld STP.
Try visits of actual installed STPs for practical processes and operations SOPs followed for PH, chlorine dozing, backwashing etc activities
Mam please make a video for AERATION TANK CAPACITY CALCULATION WITH NO. OF DIFFUSER REQUIRED FOR AERATION WITH BLOWER CAPACITY... ITS MY HUMBLE REQUEST TO YOU BECAUSE UR EXPLANATION IS VERY GOOD WITH OTHR ONES...
Please let me know whether video have been made and uploaded. Thanks!
👍👍👍👍
There is some error... Media surface is showing no link with media required.
Check on Excel sheet
You'll get same media required at every value of media surface area.
Dear mam , what will be its hydraulic retention time & permissible range for hrt in aeration tank
Nice work!! Can u provide with bar screen, aeration grid design calculations??
Hello sir, can you give me your contact no than I can send you more details about bar screen MBBR and air diffuser.
Hello mam I loved the whole video please can you tell me which edition did u referred for Mecalf and Eddy I will be great full if you can help me
Nice
Thank you
Should we add media qanty+volume of tank= total volume of MBBR TANK?
Thank you for your informative video. Much appreciated. Would like to know how should be calculate dissolved oxygen rate and how many diffuser to use in order to keep my mbbr tank healthy
How do you calculate MLSS on MBBR since the bacteria are on biofilm? What is the process you used? Thanks!
I have the same question . Please answer
En el tiempo 1:55 te hace falta especificar la temperatura a la que se fija esa Tasa de Carga Orgánica (TCO), la cual es la temperatura del agua dentro del MBBR. La tasa de carga orgánica es altamente dependiente de la temperatura y casi todos los datos que se tienen son a 15°C, por lo que se debe usar el factor de Arrhenius para cambiar el valor a otra temperatura; si la temperatura es mayor a 15°C la TCO será mayor, pero si es menor de 15°C disminuirá. Lo mismo sucede cuando estás haciendo los cálculos, en el tiempo 7:55.
También te hace falta profundizar en cuál es el criterio para fijar la TCO, no es escoger un valor arbitrariamente, sino con un criterio de ingeniería apropiado.
El valor de relleno obtenidoen el tiempo 11:15 está por encima de los valores recomendados que van desde el 25% al 70% del volumen dl reactor; en este caso, 42m3 es el 84% de los 50m3 del reactor. Lo recomendable es construir un reactor más grande para que al menos queden con un 50% de relleno y permita un aumento de eficiencia a futuro con la aplicación de hasta un 2o% más de relleno a futuro, en caso de que sea requerido.
First and foremost, a very good explanation.
However, can the BOD loading rate (from CPHEEO manual) be applied to pilot/lab sized MBBR as well? To be more specific, the flow rate of 1-10 ml/minute. If not, where can they be found (or how can they be custom calculated?). Please, keep on doing this. Very informative.
Thanks for appreciation. Will reply your query soon.....
Can you please explain the side water depth
Madam , tube settler media ki quantity kese calculation ki jati h .. please btaye
Hello menu madam it was nice to design . Good information
One quiry i have we have a MBBR tank of volume 50 m3 and media of volume 42 m3 so for effluent only 8 m3 .so should we 50 + 42 m3 volu e of tank ?
we are profssional manufacture since 1992,who can give competitive offer of MBBR BIO MEDAI,Any request pls contact freely.
I have same question. I have tank 40 m3 how much media i need to reach a good process . Please anyone answer if he knows
30% of mbbr volume can be considered as media volume, maximum
Mam please make a vedio on how to design a stp for freshers
the volume of the tank is 50 m3 and the amount of biomedies required is 42 m3 but there is no coherence since a maximum filling for the MBBR reactor is allowed from 30 to 70%
There is a 60:40 rule
60% media
Please tell me if i my tank capacity is 40m3
What’s the ratio between wastewater and media in the tank. And how i can masseur MLSS in tank . Thank you
can you pleas explain from where we got 0.8 X 0.68 X1.42 ?? THANK YOU
Yield based on BOD assuming a conversion factor of 1.62 g COD/g BOD = (0.42 g VSS/g COD) /(g BOD /1.62 g COD) = 0.68
MLVSS to MLSS ratio is 0.8
And COD of cell tissue is
COD = ∆O2/ ∆C5H7NO2 = 5*32 (mol wt of 5O2) / 113 (mol wt of C5H7NO2) = 1.42 g O2/ g cells
For above reaction and more details, please go through chapter 7 of Wastewater Engineering treatment and reuse by METCALF & EDDY, fourth edition.
WHY THERE ARE TWO TANKS USED IN MBBR TANKS? CAN WE GO FOR ONLY ONE TANK?
what is 0.84 in protected surface area of media?
Please check description of this video.
Anyone interested in MBBR Biochip with the world's largest surface area, please leave a comment to receive preferential prices.
hi.....could you please explain :
1. what is MLVSS & MLSS?
2. how did you reach the value 0.8 upon dividing MLVSS & MLSS?
MLSS is solid part of aeration tank, MLSS contains activated microorganisms, digested solid, volatile and suspended solids.
MLVSS is mixed liquor volatile suspended solids, which is 80% of MLSS mixed liquor suspended solids. That's why I took value as 0.8
How i can measure MLSS
How 0.68 and 1.42 ?
MADAM BOD LOADING RATE GIVEN AS PER CPHEEO MANUAL FOR KALDNES PROCESS IS 1-1.4 KGBOD/CUM/DAY....... HOW IS IT 3 KGBOD/CUM/DAY
Madam mbbe plant ka report kaise banate hai aap ke pach hai
Report ka naam batayen?
@@MeenuJainLalitpur
sewage treatment plant training experience report.
Hello mam i want ask something can we talk
Es video ko hindi me bnao mam please mujhe kuch smjh nhi aa rha h please mam 🙏🙏🙏
You mean MBBR volume is 50 m3 and MBBR media you worked out is 42 m3.. Means 80% volume of mbbr volume.. Where will the water go then... 🤓
dont just read out the whatever you are presenting........better explain the content!!!!!!
Okay ji...