System and method for treating high-salt-content organic waste liquid by virtue of disc drier

Abstract

The invention discloses a system for treating high-salt-content organic waste liquid by virtue of a disc drier, and belongs to the technical field of waste recycling. The system comprises the disc drier, wherein a liquid distributor is arranged above the disc drier; a solid salt collection tank is arranged below the disc drier; the liquid distributor is connected with a waste liquid storage tank through a waste liquid delivery pump; heating plates are arranged in the disc drier, and each heating plate is of a hollow structure; a flowing medium in a cavity is heat conducting oil. The invention also discloses a method for treating the high-salt-content organic waste liquid by virtue of the disc drier. According to the system and the method, organic matters and salts in the high-salt-content organic waste liquid are completely separated in the disc drier in an inert atmosphere by virtue of a high-temperature (about 300 DEG C) organic matter gasification principle, and the heat conducting oil is heated by virtue of the hot flue gas of an incinerator, so that flue gas treatment problems caused by volatilization of organic toxic matters in the waste liquid are solved, and solid salts formed by drying are free of pollutants in the flue gas generated by incineration.

Description

Technical field [0001] The invention belongs to the technical field of waste resource utilization, and specifically relates to a system and method for processing high-salt organic waste liquid by using a disc dryer. Background technique [0002] High-salt organic waste liquid generally refers to COD> 10,000mg / L, salt content> 20,000mg / L waste liquid is extremely difficult to treat organic industrial waste liquid. High-salt organic waste liquid is the most common in the pesticide synthesis industry. This waste liquid is difficult to exit and the existing treatment cost is relatively high, which has become an important bottleneck for the sustainable development of the industry. Taking glyphosate as an example, it is a high-efficiency, low-toxicity, broad-spectrum sterilizing postemergence herbicide. It is mainly used for field weeding of glyphosate-resistant transgenic crops and weeding on non-arable land. It has become the global output and consumption The largest variety o...

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Problems solved by technology

[0006] Purpose of the invention: The purpose of the present invention is to provide a system for treating high-salt organic waste liquid by using a disc dryer to overcome the problems of large amount of secondary hazardous waste and unstable operation in the current treatment process; another purpose of the present invention It is to provide a method for treating high-salt organic waste liquid by using a disc dryer, which not only has a high detoxification rate, low secondary pollution, but also has low energy consumption and high utilization value of recycled products

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