I guess my simplest answer would be "don't!". That said it depends on 1) local regulations and 2) what the industrial waste is. If it's full of heavy metals & POPs then it's probably out but sometimes you can check to see what the thresholds are in certain regulations assuming that those countries allow industrial waste in soil amendment in the first place. If it's say ultimately biodegradable waste from the food industry, then there may indeed be a way to reuse it sustainably but you'll still have to have an idea of what is in it and it's potential toxicity to terrestrial organisms
agree very much with Paul Christopher Thomas You will most probably need a severe pretreatment before submittinng industrial wastewater to soil.
Dear Suneel Kumar ,
In general, I agree with Paul Christopher Thomas .
Effluents from most food and beverage industries could be used directly in agriculture to supplement irrigation. However, we recommend and apply full biological treatment (after pretreatment, equalisation and conditioning) resulting in very clean effluent for reuse such as for irrigation and in an active organic fertilizer as a side stream for healthy soils and superior crops.
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