Sectional type gasification and detoxification system and method for high-concentration organic salt-containing waste liquid

Abstract

The invention discloses a sectional type gasification and detoxification system for high-concentration organic salt-containing waste liquid, belonging to the technical field of waste recycling. The sectional type gasification and detoxification system comprises a drum type spray preconcentrator and a disk gasifying machine, wherein an inner drum of the drum type spray preconcentrator and a disk of the disk gasifying machine respectively has a hollow structure, and waste liquid is preconcentrated to form salt slag and enter the disk gasifying machine for gasification and detoxification, thus finally forming crystalized salt product. The invention further discloses a sectional type gasification and detoxification method of high-concentration organic salt-containing waste liquid. The system and the method utilizes an organic matter high-temperature (350-560DEG C) principle, the thorough separation of organic matters from salts in the high-concentration organic salt-containing waste liquid in the drum type spray preconcentrator and disk gasifying machine under inert atmosphere, the formed crystalized salt can be used as industrial salt raw materials, and organic vapor is returned back to incinerator for incineration; and the sectional type gasification and detoxification system can be embedded into a dangerous waste incineration system, so that the treatment cost of the high-concentration organic salt-containing waste liquid can be effectively lowered, and the problem that the crystalized salt is stained with pollutant in smoke can be avoided.

Description

technical field [0001] The invention belongs to the technical field of waste resource utilization, and in particular relates to a segmented gasification detoxification system and method for high-concentration organic salt-containing waste liquid. Background technique [0002] High-concentration organic salt-containing waste liquid generally refers to waste liquid with COD>100,000mg / L and salt content>10,000mg / L, which is generally produced in the wastewater evaporation concentration and membrane separation sections of fine chemical industries such as pesticides and pharmaceuticals. Refractory organic industrial waste liquid. [0003] Aiming at the high salt content and poor biodegradability of high-concentration organic saline waste liquid, many scholars at home and abroad have carried out a lot of exploratory research. The main methods can be divided into membrane separation method, adsorption method, chemical oxidation method and heat treatment method. Among them, ...

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Problems solved by technology

[0006] Purpose of the invention: The purpose of the present invention is to provide a segmented gasification detoxification system for high-concentration organic salt-containing waste liquid, which uses a combination of a drum-type spray pre-concentrator, a disc gasifier and an indirect rotary kiln burning furnace A system for segmented gasification and detoxification of high-concentration organic salt-containing waste liquid, which overcomes the problems of large secondary hazardous waste and unstable operation in the current treatment process; another purpose of the present invention is to provide high-concentration organic salt-containing waste Liquid segmented gasification detoxification method, using drum spray pre-concentrator, disc gasifier and indirect rotary kiln burning furnace to treat high-concentration organic salt-containing waste liquid, not only high detoxification rate, secondary Low pollution, low energy consumption and high utilization value of recycled products

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