Hi Sergio, The best way to ...

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Hi Sergio,

The best way to assess the correct treatment process you have to collect the grab samples of raw effluent at least 3 times a day and analyze them one in early morning around 8:00 am, 2nd in afternoon and last in the evening. this will help you to get an idea about the peak value of organic content. Please don't depend on composite sample analysis because this analysis will give you just an average value and this analysis to not at all helpful to design a system.

Major Parameters COD, TSS, O/G, dissolved sulfide, NO3, NH4, Total N & Total P. If possible please do BOD also but it takes long to get the results. With COD its possible to assess.

Once you have done this please share the results with me I may help you because I have treated high COD effluent ranging from 4,000 to 6,000 mg/L value in the factories which you have mentioned.