Recycling process and system of h-acid wastewater containing high salt and high concentration of refractory organic matter
A refractory organic matter, high-concentration technology, applied in the field of environmental resources, can solve the problems of large organic matter waste residue and high treatment costs, and achieve the effects of reducing treatment costs, achieving zero emissions, and reducing costs
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Embodiment 1
[0028] A process for recycling H-acid wastewater containing high-salt and high-concentration refractory organic matter, the steps are as follows:
[0029] 1) Solvent crystallization
[0030] Add the H-acid wastewater into the dissolution and crystallization kettle, at a temperature of 35°C, use a Venturi circulation feeding system, add 40% of the quality of the H-acid wastewater to dissolve the crystallization solvent ethanol, leave it for 20 minutes, the sodium sulfate crystals are precipitated, and the sulfuric acid is separated The sodium crystal is sent to 3) the high temperature boiling granulation oxidation furnace system, and the waste acid solution is sent to step 2) the waste acid recycling section.
[0031] 2) Recycling of waste acid
[0032] The waste acid solution containing a large amount of dissolved solvent and sulfuric acid, a small amount of sodium sulfate, a small amount of H acid and other organic components from step 1) enters the evaporation kettle for so...
Embodiment 2
[0036] A process for recycling H-acid wastewater containing high-salt and high-concentration refractory organic matter, the steps are as follows:
[0037] 1) Solvent crystallization
[0038] Add the H-acid wastewater into the dissolution and crystallization kettle, and at a temperature of 45°C, use a Venturi circulation feeding system, add 30% of the quality of the H-acid wastewater to dissolve the crystallization solvent methanol, and leave it for 60 minutes, the sodium sulfate crystals are precipitated, and the sulfuric acid is separated The sodium crystal is sent to 3) the high temperature boiling granulation oxidation furnace system, and the waste acid solution is sent to step 2) the waste acid recycling section.
[0039] 2) Recycling of waste acid
[0040] The waste acid solution containing a large amount of dissolved solvent and sulfuric acid, a small amount of sodium sulfate, a small amount of H acid and other organic components from step 1) enters the evaporation kett...
Embodiment 3
[0044] A process for recycling H-acid wastewater containing high-salt and high-concentration refractory organic matter, the steps are as follows:
[0045] 1) Solvent crystallization
[0046] Add the H-acid wastewater into the dissolution and crystallization kettle, and at a temperature of 50°C, use a Venturi circulation feeding system, add 15% of the H-acid wastewater quality to dissolve the crystallization solvent ethanol, leave it for 100 minutes, the sodium sulfate crystals are precipitated, and the sulfuric acid is separated The sodium crystal is sent to 3) the high temperature boiling granulation oxidation furnace system, and the waste acid solution is sent to step 2) the waste acid recycling section.
[0047] 2) Recycling of waste acid
[0048] The waste acid solution containing a large amount of dissolved solvent and sulfuric acid, a small amount of sodium sulfate, a small amount of H acid and other organic components from step 1) enters the evaporation kettle for solv...
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