Sandip S. Magdum

11 Questions 22 Answers 0 Followers

Questions related from Sandip S. Magdum

What phenomenon of Zeta Rod (High Voltage Capacitance Based technology -HVCB) converts the particle’s Zeta potential from -50mv to -20mV?

We have the particles with negative surface charge in a solution of pH 7, some counter ions (anions) caused to form stern layer and shear plane responsible for Zeta potential of -50mV. I wish to...

26 December 2014 7,685 0 View

How can I reduce the stalked ciliates concentration from SBR?

After aeration phase, sludge settling has improved and seen initially 15 to 20 mins, but as high concentration of stalked ciliates are present, the ciliates with sludge is coming to top of the...

11 June 2014 5,494 2 View

What does a high quantity of stalked ciliates (Protozoa) observed in SBR sludge indicate?

We are observing the stalked ciliates in SBR sludge in pilot SBR plant since from a month. The concentration is increasing and we can see them with eyes. We observed them under microscopy; they...

29 May 2014 3,142 4 View

On which basis Air calculation in wastewater treatment should be done? BOD/ bCOD/ COD?

What will be the basis of air calculation for the influent with BOD/COD ratio= 0.2, 0.5, 0.8? (neglecting ammonical nitrogen)

01 April 2014 8,305 4 View

How do you improve SBR sludge settling/SVI (Sludge Volume Index) without changing F/M (0.2)?

Present SVI= 120 ml/gm; required SVI= 80 ml/gm

01 April 2014 8,022 7 View

What is the range of F/M in SBR (Sequential Batch Reactor) for wastewater treatment with nutrient removal?

What will happen if F/M is too low (less than 0.1) and too high (more than 0.2 or 0.25)?

01 April 2014 6,578 3 View

Does the nitrification process follow product inhibition phenomenon?

If DO is 6 mg/l and NO3-N is 14 mg/l (COD - 30mg/l and remaining NH3-N- 15 mg/l), is this conc. of nitrate inhibiting further nitrification?

16 September 2013 8,883 5 View

Why is a higher temperature (>30°C) required for efficient biomethanation?

I wish to add that, the temperature will be related to metabolic activity of methanogens, but at consistently lower average temperature (

07 May 2013 7,033 18 View

What will be the minimum HRT for 0.5 % PVA (Polyvinyl alcohol) containing Textile Effluent with 15000 to 18000 mg/l COD?

Need efficient solution to textile industries for PVA containing effluent.

14 March 2013 3,568 2 View

Can we use a bacteriophage containing product to kill or remove potentially pathogenic bacteria from water?

If we have a product which contains bacteriophages which specifically kill pathogenic bacteria in contaminated water, will it work efficiently? Will people use this product for water disinfection?

18 February 2013 5,467 1 View

In MLE process of nutrient removal system, how much the HRT of Anoxic and Aerobic reactor should be maintained to get maximal nitrogen removal?

Nutrient removal

18 January 2013 2,507 2 View