A treatment method for high-sulfur wastewater from oil and gas fields
A treatment method and high-sulfur technology, which is applied in water/sewage treatment, multi-stage water/sewage treatment, oxidized water/sewage treatment, etc., can solve problems such as secondary corrosion of equipment and increase of sulfate radicals, and reduce corrosion, Corrosion reduction, simple method effect
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Embodiment 1
[0022] A method for treating high-sulfur wastewater from oil and gas fields, comprising the following steps:
[0023] (1) Adjust the pH value of the sewage to 7, add 1mol / L sodium sulfite solution, wherein the amount of sodium sulfite solution added is 1% of the volume of sulfur-containing sewage, stir and react for 10 minutes, and then filter the generated elemental sulfur;
[0024] (2) Add 50mg / L ODD imidazoline corrosion inhibitor and 40mg / L tetrakis hydroxymethyl phosphorus sulfate to the treated sewage, and stir evenly.
Embodiment 2
[0026] A method for treating high-sulfur wastewater from oil and gas fields, comprising the following steps:
[0027] (1) Adjust the pH value of the sewage to 7, add 1mol / L sodium bisulfite solution, wherein the amount of sodium bisulfite solution added is 1% of the volume of sulfur-containing sewage, stir for 10 minutes, and then generate elemental sulfur filtration;
[0028] (2) Add 50mg / L OED imidazoline corrosion inhibitor and 40mg / L tetrakis hydroxymethyl phosphorus sulfate to the treated sewage, and stir evenly.
Embodiment 3
[0030] A method for treating high-sulfur wastewater from oil and gas fields, comprising the following steps:
[0031] (1) Adjust the pH value of the sewage to 7, add a mixed solution of 1mol / L sodium sulfite and 1mol / L sodium bisulfite, where the amount of the mixed solution of sodium sulfite and sodium bisulfite is the volume of sulfur-containing sewage 1% of 1%, stirred and reacted for 10min, then filtered the generated elemental sulfur;
[0032] (2) Add 50mg / L thioureido imidazoline corrosion inhibitor of model HY-3 and 40mg / L tetrakis hydroxymethyl phosphorus sulfate to the treated sewage, and stir evenly.
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