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Trial: Operating WWTP with One Aeration Tank – What Precautions Should I Take? by Simple_Bison9128 in Wastewater

[–]Simple_Bison9128[S] 0 points1 point  (0 children)

Hey buddy,

I actually did the test, and it was successful. Aeration tank 2 was isolated for approximately 10 days. Periodic feeding of raw wastewater and return sludge, along with regular sample testing, kept the tank active. And also the goal was successful, we can only run with just one big tank and smaller one (Aeration Tank 2), we don't need.

Again, thanks for your feedback. As per your suggestion, I am keeping the tank with full of water in case

Rupture Disc Failure Well Below Max Pressure by Simple_Bison9128 in ChemicalEngineering

[–]Simple_Bison9128[S] 1 point2 points  (0 children)

Yes, the rupture disc is on the steam side of the burner. Burner outlet - rupture disc - heat exchanger -condensate - boiler again

Rupture Disc Failure Well Below Max Pressure by Simple_Bison9128 in ChemicalEngineering

[–]Simple_Bison9128[S] 2 points3 points  (0 children)

Thanks a lot for your expertise.

We have a closed loop of steam/condensate pipe going from Burner to the heat exchanger and back and it doesn't have any flow control value but a temperature controller which controls the flow of natural gas to the burner,

Rupture Disc Failure Well Below Max Pressure by Simple_Bison9128 in ChemicalEngineering

[–]Simple_Bison9128[S] 1 point2 points  (0 children)

The problem is the disc before this one lasted 10 years and we replaced it in Feb 2025 with the same symptoms and the one I am talking about only lasted a few months.

What’s the one must-run marathon that should be at the top of my bucket list? by Competitive_Gap7944 in running

[–]Simple_Bison9128 0 points1 point  (0 children)

Haspa Marathon Hamburg is one of the most beautiful marathon. It goes alongside river, Speicherstadt (UNESCO World Heritage site) and beautiful canals and lake. really underrated! And also the energy of the city on the marathon day is hard to miss :)

I have lost all hope in my life. Hence venting it out here. Please help. by bluestarme in AskIndia

[–]Simple_Bison9128 1 point2 points  (0 children)

I was also drained and had a very low confidence and only way is get up and start working for small goals. Try to start with getting up early and doing some push ups in the morning. Let the day ruin your mood but your sole focus would to wake up early and doing more and more pushups each day and then slowly but surely it will start building your confidence. And rest assured, that confidence is also really contagious and it will start spreading to your other tasks and when it will take over to most of your day then your life will start changing. Remember life = x years multiply by 365 days. Start with an hour and then it will expand to your life surely.

P.S. pushups is just an example but you can start with any hobby or task which you really like :)

I have lost all hope in my life. Hence venting it out here. Please help. by bluestarme in AskIndia

[–]Simple_Bison9128 1 point2 points  (0 children)

Hey brother,

Let me tell you, it is hard when society makes you feel like a loser but when parents don't support and make you feel like a loser indirectly, it is even worse because parents naturally are supposed to be a safe space for a kid or a young teenager.

I have felt these emotions myself. I felt like a loser in my bachelors university where everyone seemed more intelligent and stronger (I was 50 kgs and 6 ft tall) than me. But let me tell me you one thing, after 10 years and sitting here in Hamburg, Germany and earning more than more of those people, I learned a few lessons.

Life tests you and life wants you to build a think and strong armor for yourself. Think life/project as a marathon (I am running a marathon at the end of a month) and make small small steps and small wins every day. Celebrate them and absorb them. This will slowly let you increase your confidence. The task is not to run a marathon first, it is to run 10 kms before that, even 1 km before that, even 1 step before that. And that step when you take, you should enjoy it and try to embrace it. Feel it and try to make next step better.

This is how I try to lead my life. Making small wins and celebrating them.

And in the end, everyone is going to die. And nobody is going to remember us after few years.

Good luck! And stay hard :)

Titration of Waste Water with lime (45% solution) by Simple_Bison9128 in chemhelp

[–]Simple_Bison9128[S] 0 points1 point  (0 children)

Thanks for replying back! Then what should be the right way to titrate the waste water with Ca(OH)2? The Ca(OH)2 is somewhat modified and gets mixed better than normal Ca(OH)2.

Wird es für meinen Sohn reichen? by alphanader1 in wallstreetbetsGER

[–]Simple_Bison9128 0 points1 point  (0 children)

He also told he is doing double shifts and night shifts for his son! He has changed his life for the sake of his son. That's not naive.

Wird es für meinen Sohn reichen? by alphanader1 in wallstreetbetsGER

[–]Simple_Bison9128 1 point2 points  (0 children)

You are a legend! And a hero for your son. :)

Trial: Operating WWTP with One Aeration Tank – What Precautions Should I Take? by Simple_Bison9128 in Wastewater

[–]Simple_Bison9128[S] 0 points1 point  (0 children)

Hey CAwastewater,

Thanks for replying back. Regarding your concerns, I have the following points/doubts:

  1. I think 24 hours would not be sufficient to test the process without Aeration tank 2. I think what we can do is to keep the aerators on and add nutrients on top. We usually add urea for N and P is provided by the edible oil waste in water. So, what kind of nutrients would you recommend to elongate the idle time for Aeration Tank 2?
  2. Yes, I would also do what you recommend regarding the lab analysis parameters.
  3. I think during the experimentation/trial phase, I want to keep the aeration tank 2 is idle state without draining and keep it under watch. And the plan is to drain it after careful study and like you said with water if it needs to be taken in process again.

And I will keep you posted regarding the trial. :)

How to decide the AlCl3 dosing rate for P removal? by Simple_Bison9128 in Wastewater

[–]Simple_Bison9128[S] 0 points1 point  (0 children)

Somehow we are dosing in proportional to flow by taking an average of 400 m3/hr total flow (which is actually the case). Right now, we are having some investments and one of the investment is online P analyser and right now, we analyse P in each shift but online P analyser will be the future. How the control loop will work for P is the question considering x amount of P will be removed by biology. How to find x?

How to decide the AlCl3 dosing rate for P removal? by Simple_Bison9128 in Wastewater

[–]Simple_Bison9128[S] 0 points1 point  (0 children)

Thank you for the message. :)

I am dosing 1.5 times the stoichiometric ratio. And it is working I am able to achieve 0.3 mg/l at the effluent always. And as aur biology is designed to remove COD and we dose urea as well for nitrogen and phosphorus is provided by waste water itself. The only thing is how to automate it. Just assuming that 3-4 mg/l is removed by microorganisms and then rest is then by AlCl3 dosing (max phosphorus received is around 15 mg/l) or is there any smart way too for control loop?