Treatment system and method for ammonia-containing heterogeneous system wastewater

Abstract

The invention relates to a treatment system and method for ammonia-containing heterogeneous system wastewater. The treatment system comprises an aerogel modification device, a liquid separating device, an ammonia gas separating device, a heater and an ammonia gas catalytic oxidation device. The aerogel modification device conveys ammonia-containing heterogeneous wastewater into the liquid separating device via a pipeline; after standing and layering, bottom ammonia-containing wastewater is conveyed to the ammonia gas separating device via a pipeline, and gas stripping is carried out to separate ammonia gas from a water system; separated ammonia gas enters a heater for heating to a certain temperature and then enters the ammonia gas catalytic oxidation device; and under the action of a catalyst, ammonia gas reacts with oxygen so as to produce nitrogen and water, and thus, harmless treatment of ammonia gas is realized. The treatment system is reasonable in design, simple in process and practical, can perfectly meet the treatment requirements of heterogeneous wastewater containing ammonia and organic matters, is substantially reduced in treatment difficulties, realizes recycling of materials, and greatly lowers treatment cost through cooperation with a good energy recycling system.

Description

【Technical field】 [0001] The invention relates to a treatment system and method for ammonia-containing heterogeneous waste water, and belongs to the technical field of silica airgel modification. 【Background technique】 [0002] As a thermal insulation material with low thermal conductivity, light weight and non-toxicity, silica airgel has broad market prospects, but it needs to be hydrophobized in the production process to ensure the stability of product performance. There are two kinds of hydrophobic modification methods: wet method and dry method modification. Due to the residual problem of wet method modification, it will have an adverse effect on the recycling of solvents and increase the cost of recycling. Therefore, dry modification has gradually become the main modification method at present, but wastewater containing ammonia and organic matter will be generated during the dry modification process. At present, the research and treatment of ammonia-containing wastewate...

AI Technical Summary

Problems solved by technology

[0002] As a thermal insulation material with low thermal conductivity, light weight and non-toxicity, silica airgel has broad market prospects, but it needs to be hydrophobized in the production process to ensure the stability of product performance. There are two kinds of hydrophobic modification methods: wet method and dry method modification. Due to the residual problem of wet method modification, it will have an adverse effect on the recycling of solvents and increase the cost of recycling.

Ammonia is only recovered after stripping, and further treatment is still required if there is no effective way to use it, and there is no mention of heterogeneous ammonia-containing wastewater

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