Abstract

The dynamics of the cleaning capacity of agricultural fields irrigated with wastewater from a gas-processing plant is studied. It is shown that 5–7 irrigations at a rate of 480 m³/ha annually bring 2.98–4.17 t/ha of pollutants into the soil, and these pollutants are retained in the soils of the aeration zone and contribute to their salinization and alkalinization and, as a consequence, lead to a reduction in crop yields. In addition, calcium is carried from upper soil layers to deeper horizons, thereby forming a new geochemical barrier. Under conditions of a weak outflow of groundwater, we recorded a growth in its level, an accumulation of salts carried with wastewater, and an increase in the total mineralization of wastewater. It is established that the agricultural irrigation fields used for over 20 years undergo three transformation stages: adaptation stage (3–4 years); stable functioning of the geoecosystem utilizing industrial waste waters from the gas-processing plant (7–10 years), and the stage of the critical state of the geoecosystem due to the loss of the cleaning capacity by the soils and the necessity of soil-improving remediation activities.

中文翻译：

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煤气处理厂废水对农业灌溉田清洁能力的转化阶段

摘要

研究了来自天然气处理厂的废水灌溉农田清洁能力的动态。结果表明，以480 m ³的流量进行5–7次灌溉每公顷每年将2.98-4.17吨污染物带入土壤，这些污染物被保留在曝气区的土壤中并有助于其盐碱化和碱化，结果导致农作物减产。此外，钙从上层土壤带到更深的层，从而形成了新的地球化学屏障。在地下水流出微弱的情况下，我们记录了地下水位的增加，废水中所含盐分的积累以及废水中总矿化度的增加。可以确定的是，使用了20多年的农业灌溉场经历了三个转型阶段：适应阶段（​​3-4年）；适应阶段（​​3-4年）。利用来自加气站的工业废水，地球生态系统的稳定运行（7-10年），