A treatment method for high-concentration salt-containing organic waste liquid

Abstract

The invention discloses a treatment method for high-concentration salt-containing organic waste liquid. Hydrochloric acid is used to adjust the pH of high-concentration salt-containing organic waste liquid to acidity to obtain acid-regulated waste liquid; ferric chloride is added to the acid-regulated waste liquid to obtain Iron replenishing acid to regulate waste liquid; continuous exposure to air in iron supplementing acid regulating waste liquid, and electron beam irradiation treatment at the same time to obtain electron beam irradiation solution; adding sodium hydroxide to the electron beam irradiation solution, solid-liquid The iron precipitate is separated and recovered, and the remaining waste liquid is sodium chloride waste liquid. Based on the traditional electron beam irradiation process for wastewater treatment, the present invention adjusts the pH by hydrochloric acid, adds ferric chloride reagent, and adds air aeration, thereby strengthening the oxidation in the electron beam irradiation stage and realizing COD in the waste liquid. Efficient removal; by adding sodium hydroxide to recover iron precipitates, re-separate the introduced iron ions from the waste liquid to obtain sodium chloride waste liquid, and simultaneously realize the degradation and removal of COD and the efficient separation and recovery of sodium chloride.

Description

Technical field [0001] The present invention relates to a treatment method of industrial waste liquid, and more particularly to a method of treatment of high concentration-containing organic waste liquid. Background technique [0002] Chemical, paper, printing and dyeing, pharmaceutical, petroleum and other industries are prone to a large number of high concentrations of salt-containing organic waste liquid during process production and waste liquid, which is usually high concentration of chloride and COD organic waste liquid, such as untreated direct Emission will not only endanger human health and will seriously pollute the ecological environment on the irreversible effects of surrounding soils. [0003] At present, the disposal technique for high concentrations of chloride and COD organic waste liquid mainly includes biological disposal, incineration method, evaporative salt, membrane separation method, electrochemical method, and depth oxidation. The use of a biological dispo...

AI Technical Summary

Problems solved by technology

The application of biological treatment to treat high-concentration sodium chloride and COD organic waste liquid can recover part of the sodium chloride solution, but it has problems such as long repair period, low removal rate of organic matter, and complicated domestication process of halophilic bacteria.

The incineration method can realize the separation of brine and the thermal oxidation decomposition of organic matter, but problems such as high energy consumption, easy blockage of nozzles, and serious boiler crystallization corrosion have always restricted the promotion of incineration.

However, the single application of electron beam irradiation treatment has problems such as poor degradation effect of organic matter, low COD removal efficiency, and low recovery rate of available resources in waste liquid.

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