Chemical characteristics of soil irrigated with produced water treatment and underground water

Abstract

Irrigation effects of produced water treatment, diluted in underground water, were analyzed through the chemical characteristics of argisol with foraging palm. Assay was performed in a randomized block design (RBD), with five replications, in a subdivided split plot scheme. Splits comprised treatments T1 (100% underground water - UW, control), T2 (75% UW and 25% produced water treatment - PW), T3 (50% UW and 50% PW), T4 (25% UW and 75% PW) and T5 (100% PW), whilst sub splits comprised soil depths (0 - 0.10 m and 0.10 - 0.20 m). The results showed that irrigation with diluted treated water produced no risk of soil salinization. There was evidence of leaching of the mobile ions to the deeper layer of soil, especially sodium and magnesium. The highest risk of sodification was observed for soil irrigated only with groundwater (T1 - control treatment).

Entupimento e modificação da vazão de emissores aplicando diluição de água produzida de petróleo tratada

“…Os teores de cálcio (Ca 2+ ) variaram de 28,83 (0 h) a 80,25 mmolc L -1 (160 h), tendo média aritmética de 61,43 mmolc L -1 Essa elevação ao longo do tempo de operação pode ser consequência do aumento no pH da diluição. Esses valores foram bem superiores a maior taxa encontrada por Costa et al (2019) na diluição de 25% de água produzida e 75% de água subterrânea em seu estudo água produzida tratada diluída da região de Jucuri-RN, onde os valores oscilaram de 0,96 a 1,77 mmolc L -1 .…”