Water and Wastewater.com Help Forums - help us for reducing COA & lead

kamran.me

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help us for reducing COA & lead
Apr 28^th, 2012, 2:31am

Dear experts
its nice to join that group,and hop got very informative information from your side,well our corrugated carton industry having big problem in effluent please help how can we reduce 1st COD,Lead and then other or all results are attache ( All parameter's Unit mg/l)(BDL means=Below detectable limet
Parameter Unit NEOS Limits Concentration
Ph Value mg/l 6--9 6.13
BOD5 mg/l 80 1498
COD mg/l 150 3080
TDS mg/l 3500 120
Chloride mg/l 1000 81.15
TSS mg/l 200 373
Fluride mg/l 10 BDL
Cyanide mg/l 1 0.35
An-Ionic detergents 20 3.45
Phenolic Compounds 0.1 3.3
Manganese 15 0.16
Oil and grease 10 7
sulphid 1 0.73
lead 0.5 BDL
Nickel 1 BDL
Silver 1 BDL
Sulphate mg/l 600 92
zinc mg/l 5 0.26
Cadmium mg/l 0.1 BDL
Chromium mg/l 1 BDL
Chlorine mg/l 1 BDL
Copper mg/l 1 0.7
Total Toxic metals 2 1.69
Barium mg/l 1.5 0.99
Mercury mg/l 0.01 BDL
Selenium mg/l 0.5 BDL
Arsenic mg/l 1 BDL
Iron mg/l 2 1.13
Boron mg/l 6 12.7
Ammonia mg/l 40 35.75

Iam seek your help in this regards,
very
Thanks
Regard-Kim

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grrun

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Re: help us for reducing COA & lead
Reply #1 - Apr 28^th, 2012, 2:51pm

Does this wastewater have a treatment system? I would suggest that you engage a competent consultant to design a plant for this wastewater.

Lead is below the detection limit so I don't think it will be a problem.

COD may present a problem and I would filter a sample after the BOD has been run to determine if the BOD and TSSs may lower the COD and phenolics to acceptable levels. You may have to do something about the surfactants and phenolics.

A pH adjustment and possibly an alkalinity adjustment may be required.

Boron may necessitate a change in detergents in the manufacturing process.

You may have missed other chemicals that contribute to the high COD. Anyway, these are the things that I would do before designing (and I'm not a designer) a treatment system.

grrun

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kamran.me YaBB Newbies Offline I love Water and Wastewater.com Posts: 20 Company or Organization: Corruwall product factory	Re: help us for reducing COA & lead Reply #2 - Apr 30^th, 2012, 4:37am Sir its hard to install a system because its too much costly,can you please suggest any other war to reduced these things (like any chemical to reduce CoD),we are weekly cleaning our septic tank, Thanks- Kim
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Tom Keenan - nesa

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Re: help us for reducing COA & lead
Reply #3 - Apr 30^th, 2012, 9:55am

HI Kamran,
If you are just using a "septic tank" it is MOST UNLIKELY that you will achieve the NEOS Limits that have been specified.
If you take the "Chemical: treatment route it may be possible to achieve the specified limits, but it will probably require segregation of waste streams to optimise the chemical treatment processes. It is also likely that you will then end up with large quantities of "chemical' sludges that need to be treated and disposed of without causing pollution.
You must also remember that chemical treatment can also be costly.

I think that you should engage a suitable professional to review the production processes to ensure that wastes are minimised, then do as grrun says and engage a suitable professional to develop suitable treatment options for you.

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tomkeenan@nesa.ie
Environmental Consultant
www.nesa.ie

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