Removal of ammoniacal nitrogen by cost effective physico chemical process.

[Bhaskar Mondal]

Hello,

Can anyone suggest me any cost effective physico chemical process through which ammoniacal nitrogen can bring down from 2000 ppm to less than 50 ppm.

[Ajaykumar Shinde]

Recovery of liquid ammonia by stripping through distillation coloum is one of the method of removal of ammonia from waste water.

[Durga venkata prasad.G]

Dear basker,

 

Removal of ammonium nitrogen throw the activated sludge process,but it is not recoverable,

in this process completely de nitrifiation happen.

 

Regards,

prasad

 

 

[Dr. Indra N. Mitra]

Use biological treatment as it will be far cheaper than physicochemical treatment.

 

If u have to go for physico-chemical then following Physicochemical treatment processes are available for ammonia removal:

1. steam stripping

2. air stripping

3. breakpoint chlorination

 

Usually cheapest is steam stripping

U need to have ammonia recovery system for steam/air stripping as u cannot blend ammonia in air bcos there is an air regulation.

 

contact me for details:  email: [e-mail]

 

Indra

[Yogendra Kanitkar]

Activated sludge process is not a physico chemical process...its biological. There is no guarantee that complete denitrification will occur. It depends on the SRT and reactor config. It is still the cheapest (operational cost) way to remove nitrogen, but comes at a hefty (capital cost)

-- 

Yogendra Kanitkar

Durga venkata prasad.G said:

Dear basker,

 

Removal of ammonium nitrogen throw the activated sludge process,but it is not recoverable,

in this process completely de nitrifiation happen.

 

Regards,

prasad

 

 

[Yogendra Kanitkar]

Hey,

 

I am just a rookie at this. But 2000ppm is a very high level. Are you sure biological process is not an option. It will be very cheap to install something like an RBC or a dedicated denitrification system. What is the BOD of the water? If its high enough a dedicated de nitrification  would be the best way to go ahead.

 

Chemical process...Chemical oxidation would be an option. Use a strong oxidant like chlorine thats going to convert Ammonia to nitrate, solving your problem. Since DBPs are not regulated in India..Don't worry about it. A facility like this is very cheap but uses a lot of space. 

 

Also what kind of flow are we talking about here? For lesser flows/ volumes you could use ECP. Electrocatalytic Precipitation. People say costs are less. I really do not know much about these.

 

Give me some more inputs...

 

--

 

Yogendra Kanitkar

[Prof Dr V N Sivasankara Pillai]

Dear Mr Bhaskar,

More choosing a scheme it needs to know the quantity, temp, pH, TSS and concentration of ions present in the medium. It is also desirable to know the use of treated effluent.

[Prof Dr V N Sivasankara Pillai]

for further details contact [e-mail]

[shahul hameed kp]

Hello,

       Some of the low-cost physico chemical ways to remove ammonical nitrogen from wastewater are;

              a. Addition of limestone and GAC into a batch reactor,

              b. Ammonium selective inorganic zeolites such as clinoptilolite,

              c. Nitrate selective organic synthetic resins.

              d. Physico-chemical denitrification of effluent by adding zinc powder and sulfamic acid  at acidic pH (<4).... And many more such methods are available....

 

 

Shahul Hameed kp

(Environmental Engg., S.J.C.E, Mysore)

 

[Bhaskar Mondal]

Mr. Pillai,

Quantity is 250 m3/D, at ambient temp., pH<1, TDS = 50,000 ppm, COD=10,000-12,000 ppm, BOD=3,000-3,500 ppm, NH4-N = 2,000 PPM, Ca++= 400-500 ppm.

Effluent characteristic is given above and quantity is also given...

If you want any more description just let me know i ll provide....

 

Thanks,

Bhaskar Mondal

Prof Dr V N Sivasankara Pillai said:

Dear Mr Bhaskar,

More choosing a scheme it needs to know the quantity, temp, pH, TSS and concentration of ions present in the medium. It is also desirable to know the use of treated effluent.

[Bhaskar Mondal]

Hello,

Can you send me details of below mentioned process with their side effects over TDS and COD, this treated effluent will pass through ASP (Activated Sludge Process) after this physico-chemical treatment so it is also necessary to keep TDS and COD level low.... resins will not work regeneration will take place frequently, .... I am interested in process a and d... can u provide me much more detail... u can mail me at [e-mail]
shahul hameed kp said:

Hello,

       Some of the low-cost physico chemical ways to remove ammonical nitrogen from wastewater are;

              a. Addition of limestone and GAC into a batch reactor,

              b. Ammonium selective inorganic zeolites such as clinoptilolite,

              c. Nitrate selective organic synthetic resins.

              d. Physico-chemical denitrification of effluent by adding zinc powder and sulfamic acid  at acidic pH (<4).... And many more such methods are available....

 

 

Shahul Hameed kp

(Environmental Engg., S.J.C.E, Mysore)

 

[Bhaskar Mondal]

Hello Mr. Kanitkar,

We are talking about a flow of 250m3/D which can be go upto 600m3/D depend upon treatment scheme with minimum treatment cost... as treated effluent will pass through biological treatment process, so treated effluent should not carry any harmful effect which will minimise working efficiency of microbes...

 

Thanks

Yogendra Kanitkar said:

Hey,

 

I am just a rookie at this. But 2000ppm is a very high level. Are you sure biological process is not an option. It will be very cheap to install something like an RBC or a dedicated denitrification system. What is the BOD of the water? If its high enough a dedicated de nitrification  would be the best way to go ahead.

 

Chemical process...Chemical oxidation would be an option. Use a strong oxidant like chlorine thats going to convert Ammonia to nitrate, solving your problem. Since DBPs are not regulated in India..Don't worry about it. A facility like this is very cheap but uses a lot of space. 

 

Also what kind of flow are we talking about here? For lesser flows/ volumes you could use ECP. Electrocatalytic Precipitation. People say costs are less. I really do not know much about these.

 

Give me some more inputs...

 

--

 

Yogendra Kanitkar

[Yogendra Kanitkar]

Hey,

 

Its certainly a good thing that there is going to be a biological treatment process. At the given flow, and for the effluent characteristics,my guess is you can easily tweak the available biological treatment and modify it to give you complete denitrification something on the lines of MLE. In this case ammonia cannot be recovered. But it is the most cost effective. Lets discuss it a little more. My email is [e-mail]

 

Thanks,

--

Yogendra Kanitkar

Bhaskar Mondal said:

Hello Mr. Kanitkar,

We are talking about a flow of 250m3/D which can be go upto 600m3/D depend upon treatment scheme with minimum treatment cost... as treated effluent will pass through biological treatment process, so treated effluent should not carry any harmful effect which will minimise working efficiency of microbes...

 

Thanks

Yogendra Kanitkar said:

Hey,

 

I am just a rookie at this. But 2000ppm is a very high level. Are you sure biological process is not an option. It will be very cheap to install something like an RBC or a dedicated denitrification system. What is the BOD of the water? If its high enough a dedicated de nitrification  would be the best way to go ahead.

 

Chemical process...Chemical oxidation would be an option. Use a strong oxidant like chlorine thats going to convert Ammonia to nitrate, solving your problem. Since DBPs are not regulated in India..Don't worry about it. A facility like this is very cheap but uses a lot of space. 

 

Also what kind of flow are we talking about here? For lesser flows/ volumes you could use ECP. Electrocatalytic Precipitation. People say costs are less. I really do not know much about these.

 

Give me some more inputs...

 

--

 

Yogendra Kanitkar