Comprehensive treatment system for waste gas and PO wastewater

Abstract

The invention discloses a comprehensive treatment system for waste gases and PO wastewater. The comprehensive treatment system comprises a wastewater adjusting tank, a waste gas and wastewater mixed treatment tank, a waste gas denitration tank, a wastewater electrolytic tank, an aerobiotic contact oxidation tank, a secondary sedimentation tank and a sand filtering tank, wherein the waste gas and wastewater treatment tank comprises a boiler waste gas aeration area, a mixing stirring area and a sedimentation area; aeration discs are arranged at the bottom of the boiler waste gas aeration area; the aeration discs are communicated with a boiler through a gas inlet tube and a fan; a denitration area, a demister, an activated carbon adsorption layer and an exhaust fan are sequentially arranged upwards from the bottom of the waste gas denitration tank; the wastewater electrolytic tank is of a structure with a left chamber and a right chamber, namely, a positive electrode chamber and a negative electrode chamber respectively; the bottoms of the positive electrode chamber and the negative electrode chamber are communicated; the middle and upper parts of the positive electrode chamber and the negative electrode chamber are partitioned by a partitioning plate; the positive electrode chamber and the negative electrode chamber are respectively provided with two positive and negative electrode plates; a water inlet tube is arranged at the aerobiotic contact oxidation tank; a water distribution standard pyrometric cone is arranged at the lower part of the water inlet tube; an aeration conditioning and controlling system is arranged at the lower part of the water distribution standard pyrometric cone; the aeration conditioning and controlling system comprises aeration discs, air blowers and dissolved oxygen measurement conditioning and controlling devices.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a comprehensive treatment system for waste gas and PO wastewater. Background technique [0002] Propylene oxide (PO) is a very important basic raw material in the organic chemical industry. The production methods of PO are divided into chlorohydrin method, co-oxidation method, hydrogen peroxide method, peracid method and other oxidation methods according to the different oxidants used. Among them, chlorohydrin The production capacity of this method accounts for more than half of the world's total capacity, which is also the most commonly used method for producing PO in my country. The chlorohydrin method PO production process has the advantages of mature technology, short process, safe production, good product selectivity, low investment, and low purity requirements, but the process of producing PO using the chlorohydrin method will generate a large amount ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the problems of complex structure, cumbersome operation and high treatment cost in the prior art, and provide a comprehensive treatment system for waste gas and PO wastewater, which can effectively treat waste rich in dust, Complex waste gas of nitrogen oxides, sulfur dioxide and PO wastewater

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