Method for producing ammonium sulfate by using high-ammonium-nitrogen sulfur-containing high-salinity wastewater
A high-salt wastewater, ammonium sulfate technology, applied in chemical instruments and methods, ammonia compounds, water pollutants, etc., can solve the problems of difficult treatment and high treatment costs, and achieve the effects of simple process, high yield and low cost
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Embodiment 1
[0022] Refer to attached figure 1 , present embodiment is the method for producing ammonium sulfate with gaseous ammonia method desulfurization waste water, and concrete process is as follows:
[0023] 1) Catalytic oxidation: Take iron, vanadium and copper with a mass ratio of 1:1:3 to obtain the catalyst by roasting, and put the catalyst equivalent to 1% of the wastewater volume and the activated carbon equivalent to 0.1% of the wastewater volume at 95°C at the same time. In the wastewater, pure oxygen is used to aerate and stir for 720 minutes. During the aeration, the tar and other oils dissolved in the wastewater are adsorbed by activated carbon, and the following chemical reactions also occur:
[0024]
[0025] 2) Catalyst regeneration: The mixture after the reaction in step 1) is subjected to solid-liquid separation, wherein the solid contains activated carbon and catalyst, and is heated by air at 900°C for 600 minutes to obtain a mixture of activated carbon and catal...
Embodiment 2
[0030] Present embodiment is the method for producing ammonium sulfate with corn deep processing waste water, and concrete technology is as follows:
[0031] Take nickel, iron, chromium, titanium, and aluminum with a mass ratio of 1:1:2:5:1 to obtain a catalyst by roasting. At 10°C, the catalyst equivalent to 0.01% of the waste water, and the catalyst equivalent to 0.1% of the waste water Activated carbon is put into the wastewater at the same time, and air is used to aerate and stir for 10 minutes. During the aeration period, the dissolved corn oil in the wastewater is absorbed by the activated carbon, and all sulfur-containing ions are converted into sulfate radicals through a catalytic reaction.
[0032] The mixture after the catalytic oxidation reaction is subjected to solid-liquid separation, in which the solid contains activated carbon and the catalyst, and is heated at 200°C with air for 30 minutes to obtain a mixture of activated carbon and catalyst. Due to the low cata...
Embodiment 3
[0035] Present embodiment is the method for producing ammonium sulfate with chemical fertilizer production waste water, and concrete technology is as follows:
[0036] Take cobalt, manganese, cadmium, and rubidium with a mass ratio of 1:6:1:2 to obtain the catalyst by roasting, and put the catalyst equivalent to 0.3% of the wastewater volume and the activated carbon equivalent to 1% of the wastewater volume into the wastewater at the same time In the process, the air was aerated and stirred for 300 minutes, and all sulfur-containing ions were converted into sulfate radicals through a catalytic reaction during the aeration.
[0037] The mixture after the catalytic oxidation reaction is subjected to solid-liquid separation, wherein the solid contains activated carbon and catalyst, and is heated at 550°C for 240 minutes to obtain a mixture of activated carbon and catalyst. Due to this reaction condition, the activated carbon will only have a small amount of loss. After reaching a...
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