Keywords: lysimeters, pulp and paper mills, wastewater treatment, effluent, crop yield, colour removal, COD removal, chemical oxygen demand, crop irrigation, water holding capacity, pH, electrical conductivity, organic carbon, nutrient content
Monitoring colour and COD removal capacity of soil and assessment of growth performance of crop grown with pulp and paper mill waste water: a lysimeter study
Evaluation of the changes in physico-chemical properties of soils and crops grown with pulp and paper mill wastewater in field lysimeters were carried out for three years at the Integrated Pulp and Paper Mill, Madhya Pradesh (India). Treated wastewater evaluated for crop irrigation belonged to the irrigation water class 'Moderate to Severe Restriction on use'. Application of wastewater showed the increase in water holding capacity, pH, electrical conductivity, organic carbon and plants nutrient contents (nitrogen, phosphorus and potash) of soils. Wastewater irrigation did not affect germination while grain and straw yields of jowar (Sorghum vulgare), wheat (Triticum aestivum) and moong (Vigna radiata).