Md Nuruzzaman

4 Questions 8 Answers 0 Followers

Questions related from Md Nuruzzaman

How to calculate Mean Residence Time from a Residence Time Distribution Curve?

I want to calculate Mean Residence Time of a Residence Time Distribution (RTD) Curve from tracer experiments. I have tried with the integral formula as can be found in the article attached but it...

22 September 2019 4,334 5 View

How much trust we can have on hydrologic models given that there is no true validation of a hydrologic model?

I have read it in several articles that a true validation of a hydrologic model is not possible because a lot of parameters need adjustments and we never know the perfect combination for sure. If...

03 December 2017 5,116 15 View

Can conversion of Organic Nitrogen to Ammonia Nitrogen occur under aerobic condition in river water?

I have come to a paper (attached) stating that conversion of Organic Nitrogen to Ammonia Nitrogen basically occurs anaerobically, i.e near zero Dissolved Oxygen (DO) concentration level (in sewer...

15 September 2017 6,463 4 View

What is the suitable value of "Denitrification temperature coefficient" for surface water quality modeling by using WASP or QUAL2k or any other model?

I am modeling water quality of a small river in Malaysia by using WASP. In the manual, WASP suggests a value of maximum 1.04. But I need to know a more accurate value. Temperature range of the...

09 April 2017 8,722 4 View