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Patrick A. Grimaud

The wastewater will most propably contain a high level of heavy metals.

Wastewater from paper mill has a relative high concentration of carbonates and tendency to precipitate calcium in the soil as CaCO3. It will increase the proportion of sodium to calcium and magnesium and sodium.

Irrigation with paper mill effluent will led to an increased pH. The concentration of N, P, K and Na will be high.

The dark colour prevent the natural photosynthesis process due to absence of sunlight penetration.

The propose wastewater must be analysed and treated accordingly before used to irrigation. Patrick

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