Low-carbon treatment system for high-concentration organic wastewater and method thereof

Abstract

The invention discloses a low-carbon treatment system and method for high-concentration organic wastewater. The low-carbon treatment system comprises an adjusting tank, an inner pipe of an energy exchange system I, an inner pipe of an energy exchange system II, an inner pipe of an energy exchange system III, a hydrothermal oxidation system, a gas-liquid separation device, an outer pipe of the energy exchange system II, a sludge filter pressing device, an anaerobic reaction system, an aerobic reaction system and a wetland treatment system which are sequentially connected through a liquid pipeline, and finally, discharging to outside is achieved. The gas pipeline is sequentially connected with the hydrothermal oxidation system, the gas-liquid separation device, an outer pipe of the energy exchange system I and an alkaline ionic liquid carbon absorption system, and finally, the discharging to outside is achieved. The gas generated by the anaerobic reaction system is sequentially connected with the biogas purification device, the biogas incinerator and the alkaline ionic liquid absorption system through pipelines, and finally, the discharging to outside is achieved. The sludge generated by the aerobic reaction system flows back to the adjusting tank through a pumping pipeline; and the heat conduction oil circulates between the biogas incinerator and the outer pipe of the energy exchange system III through the pipeline.

Description

technical field [0001] The invention relates to wastewater treatment technology, in particular to a high-concentration organic wastewater treatment and low-carbon treatment system and method. Background technique [0002] High-concentration organic wastewater generally refers to wastewater containing relatively high concentrations of organic matter discharged from industries such as food, papermaking, and pesticides. Usually, the COD content of wastewater is above 2000 mg / L. These high-concentration organic wastewater usually contain a large amount of carbohydrates, fats, fibers, etc., and are even accompanied by strong biological toxicity. If these wastewaters are not properly treated, they will easily cause serious damage to the ecological environment and threaten human health. The biological treatment process is difficult to deal with directly. [0003] Hydrothermal oxidation oxidation technology is a hydrothermal oxidation process proposed in the 1950s to effectively tr...

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Problems solved by technology

Subsequently, more and more experts and scholars began to pay attention to the synergistic research of "pollution reduction and carbon reduction", but they often focused on energy consumption, and the process produced CO 2 Emissions are often overlooked

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