Application of Manganese Contaminated Sludge for Rice Cultivation

Microbial sludge is one of the waste products produced by wastewater treatment systems, which sometimes contain heavy metal pollutants. and not released back into the wastewater treatment system. At the end of the system, a large amount of excess sediment is formed which can be recycled, especially manganese-contaminated microbial sediments that can be mixed with the soil. Because manganese is a micronutrient essential for photosynthesis, the production of chlorophyll. and the functioning of enzymes that affect the growth of leaves, flowers and fruits, etc. Therefore, the researcher is interested in studying the utilization of microbial sludge from the manganese-contaminated wastewater treatment system for planting rice cultivar RD 77 in order to reduce the amount of disposing of bacterial sludge. and the use of microbial sludge for maximum benefit. which the results found at the soil-sediment equilibrium ratio of 1:1 and 1:2, the rice plants had only 27-29 days of maturity at the plant height of 13-15 cm for both the sown and the sown fields. In addition, the analysis of manganese accumulation in stems, leaves and roots in the ratios of 1:1 and 1:2 showed that the highest concentrations of manganese in leaves were 0.8442, 0.9421, 0.8312 and 1.2310 for transplanting rice cultivation and broadcasting rice cultivation, respectively.