Modeling method for deep-well injection technique for treating high salinity wastewater

Abstract

The invention discloses a modeling method for the deep-well injection technique for treating high salinity wastewater, and belongs to the technical field of treatment of high salinity wastewater. Themodeling method comprises the following steps: step 1, detecting the pollution index of the wastewater; step 2, pretreating the high salinity wastewater; step 3, filtering the high salinity wastewaterthrough a membrane; step 4, adding an ion coagulation capsule; step 5, evaporating and separating the wastewater; step 6, injecting the wastewater in a deep well; and step 7, monitoring the surrounding environment; the analysis on treatment of the high salinity wastewater through the deep-well injection technique is provided, the use level of the consumed fresh water is reduced in the treatment process of the high salinity wastewater, the investment on the treatment of the high salinity wastewater, the operation cost and the labor cost are reduced, meanwhile, the treatment effect of the highsalinity wastewater is improved, and the environmental destruction of the treated high salinity wastewater and the influences on the related ecological system are reduced.

Description

technical field [0001] The invention relates to the technical field of high-salt wastewater treatment, and more specifically, relates to a modeling method for the technology of treating high-salt wastewater by deep well injection. Background technique [0002] High-salt wastewater refers to wastewater with a total salt content of at least 1%. It mainly comes from chemical plants, oil and natural gas collection and processing, etc. This wastewater contains a variety of substances (including salt, oil, organic heavy metals and radioactive substances). Salt wastewater is produced in a wide range of ways, and the amount of water is increasing year by year. The environmental impact of removing organic pollutants in saline wastewater is crucial. The types and chemical properties of organic matter in high-salt organic wastewater vary greatly depending on the production process, but most of the salts contained are Cl-, SO42-, Na+, Ca2+ and other salts. Although these ions are esse...

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Problems solved by technology

[0003] The ion concentration in high-salt wastewater is too high. During the treatment process, if it is discharged into most environments, it will cause serious damage to the original ecosystem. The high-concentration ions in high-salt wastewater will inhibit and poison microorganisms. Salt The high concentration leads to an increase in the density of wastewater, and the activated sludge is easy to float and lose, which seriously affects the purification effect of the biological treatment system. The common methods of treating high-salt wastewater are dilution treatment and evaporation separation treatment. Dilution treatment requires a large amount of fresh water. Dilution of ion concentration in high-salt wastewater to a low-impact concentration does not conform to the principle of sustainable development. Evaporation and separation treatment has a large amount of evaporation, high investment and operating costs, and the remaining products after evaporation and separation still need to be specially stored. Otherwise, it is easy to cause damage to the environment

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