Studying the effect of sewage sludge compost on the growth and some physiological characteristics of Vetiver plant
Subject Areas : Environmental managmentShahram Lasemi 1 * , Ebrahim Alaei 2 , Reza Arjmandi 3 , Amir Hesam Hassani 4
1 - Faculty of Natural Resources and Environment, Islamic Azad University, Tehran Science and Research Unit, Department of Environmental Engineering, Tehran, Iran. *(Corresponding Author)
2 - Associate Professor, Environment and Biotechnology Research Institute, Research Institute of Petroleum Industry, Tehran, Iran.
3 - Associate Professor, Department of Environmental Management, Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran (Corresponding Author).
4 - Associate Professor, Islamic Azad University, Tehran Science and Research Unit, Department of Environmental Engineering, Tehran, Iran.
Keywords: Sewage sludge of sanitary treatment plant, Mahmudabad, Compost, Vetiver plant.,
Abstract :
Background and Objective: Considering the harmful environmental effects caused by the excessive use of chemical fertilizers, it can always be seen that paying attention to sustainable agriculture becomes more important. On the one hand, the composting process helps to clean the environment from pollutants, and on the other hand, it is used as an organic fertilizer in agriculture due to the presence of significant amounts of nutrients.
Material and Methodology: At present, effective new solutions aimed at purifying sewage have led to the improvement of the quality of the final effluent, although it should be noted that it increases the volume of sewage sludge produced to a significant extent. This research has investigated the environmental management status of the sewage sludge of the health treatment plant of Mahmoud Abad oil industry sports and educational complex, affiliated with National Oil Company, in order to produce compost and the effect of composting this sludge on the growth and some physiological characteristics of Vetiver plant species.
Findings: The sludge used in this descriptive-sectional study was prepared from the drying sludge beds of the wastewater treatment plant of the Mahmoud Abad oil industry sports and educational complex and the method used was aerobic composting of the sludge in the form of the windrow. The experiment was carried out with three repetitions on a vetiver grass plant and in greenhouse conditions.
Discussion and Conclusion: The rate of plant growth and chlorophyll change was recorded in a way that proved that the compost had a favorable effect. According to the environmental conditions and nutritional needs of plants, it can be claimed that bio fertilizers and especially compost from wastewater processing can play a positive role in plant growth and performance in drought-stress conditions.
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