Hooshyar Hossini

15 Questions 50 Answers 0 Followers

Questions related from Hooshyar Hossini

How to calibrate an ozonmeter?

we purchase a ozonmeter and need a way to calibrate this instrument.

16 April 2016 2,092 5 View

What does C:N:P mean for autotrophic bacteria?

CNP= Carbon, Nitrogen, Phosphorus or COD/Nitrate/Phosphate? but for autotrophic bacteria C or Carbon calculate from NaHCO3 or CO2 or COD? the C is determined based on? CO2, HCO3 or CaCO3?

14 September 2014 3,374 8 View

What are the best growth media for autotrophic and heterotrophic bacteria?

I have two reactors of autotrophic and heterotrophic bacteria and I want to know more about bacteria activities. I don't know what media is better for their cultivation like nutrient broth or...

15 June 2014 3,059 4 View

Why is air stripping used for high concentration of ammonia?

Generally ammonia in high concentration is stripped by aeration or airflow. For example, its use for landfill leachate contacting high ammonia about 3000-4000 mg/L.

18 May 2014 627 15 View

Determination of hydrophobic and hydrophilic characteristics in a matter?

For example I want to know if a plastic, textile or media is hydrophobic or hydrophilic? How many hydrophobic or hydrophilic in term of its scale (percentage, rate, etc.)?

01 May 2014 5,104 6 View

What factors can affect redox (ORP)?

In wastewater treatment redox can be changed due to physical, chemical and biological agents.

18 April 2014 8,640 4 View

What is different between contentious flow and semi-continuous?

I should be grateful if hep me anyone by figure or documented file.

09 March 2014 1,370 5 View

What do you think about Aeration and pH increases?

I've seen an increase in pH during the aeration of ammonia content effluent. Can anyone tell me about this?

26 February 2014 816 33 View

How can carbon cloth or felt be fabricated out of carbonaceous material?

I am interested in the methods, references, comments or ideas you can share on the fabrication of carbon cloth or felt from carbonaceous material.

17 September 2013 4,566 1 View

How can I decrease the flow of a peristaltic pump?

I need a smaller flow rate less than 10 ml per minute.

15 September 2013 6,427 6 View

What is the optimum C:N:P ratio of aerobic and anaerobic and what are the basics?

For example: for aerobic it is about 100: 5: 1. Why these amounts?

10 September 2013 2,020 7 View

What are the most important parameters in the UASB start-up?

type of sludge or granule, HRT, waste water characteristic, etc.

10 September 2013 3,972 6 View

Is the OD600 a valid test for determining of all microbes density?

For example: can I use for microbes that generates colored products.

02 September 2013 7,710 5 View

What is a good way to calculate the current density for electrocoagulation process?

The anode and cathode surfaces are considered or just the anode?

20 July 2013 667 10 View

What is important data base in environmental Engineering?

Database

11 November 2012 2,034 3 View