Method for sterilizing oil field sewage by cooperating electrochemical oxidation with ultraviolet and ultrasonic technology
A technology of oilfield sewage and sterilization methods, which is applied in the fields of chemical instruments and methods, sterilization/microdynamic water/sewage treatment, light water/sewage treatment, etc., and can solve the problem of easy drug resistance of harmful microorganisms and easy corrosion of equipment and pipe networks Scaling, harmful bacteria are easy to reproduce and other problems, to reduce clogging, improve light transmittance, and enhance the effect of sterilization
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Embodiment example 1
[0040] Incoming water quality of an oilfield sewage station: pH = 6.2, dissolved oxygen (DO) = 1.036 mg / L, total iron: 43 mg / L, divalent sulfur: 2.7 mg / L, suspended solids = 51 mg / L , oil content: 153 mg / L, MF = 0, SRB = 10 3 pcs / ml, TGB = 10 3 pcs / ml, FB=10 3 perml, the average corrosion rate is 0.6902 mm / a, and the quality of incoming water shows high iron content, high salinity, and strong corrosion and scaling.
[0041] The oilfield sewage sterilization method using electrochemical oxidation combined with ultraviolet and ultrasonic technology is used to treat the oilfield sewage, and the treatment flow rate is 15 m 3 / h, the wavelength of ultraviolet rays is 185 nm, the frequency of ultrasonic waves is 20 KHz, 10 pairs of electrodes are connected in parallel, the distance between each pair of cathode and anode is 7mm, the anode material is titanium, the cathode material is platinum, and the thickness of the cathode plate is 5 mm, the current density is 5 A / m 2 . Duri...
Embodiment example 2
[0045] For an oilfield sewage station, the incoming water quality indicators are: PH = 6.6, dissolved oxygen = 1.028 mg / L, total iron: 47 mg / L, divalent sulfur: 3.7 mg / L, suspended solids = 53 mg / L, oil content: 144 mg / L, MF = 0, SRB = 10 3 pcs / ml, TGB = 10 3 pc / ml, iron bacteria=10 3 per ml, the average corrosion rate is 0.668 mm / a, and the quality of incoming water shows high iron content, high salinity, and strong corrosion and scaling.
[0046] The oilfield sewage sterilization method using electrochemical oxidation combined with ultraviolet and ultrasonic technology is used to treat the oilfield sewage, and the treatment flow rate is: 110 m 3 / h, the wavelength of ultraviolet rays is 254 nm, the frequency of ultrasonic waves is 250 KHz, 12 pairs of electrodes are connected in parallel, the distance between each pair of cathode and anode is 8 mm, the anode material is titanium, the cathode material is graphite, and the cathode plate Thickness: 40 mm, current density:...
Embodiment example 3
[0050] For an oilfield sewage station, the incoming water quality indicators are: PH = 6.0, dissolved oxygen = 1.030 mg / L, total iron: 40 mg / L, divalent sulfur: 2.2mg / L, suspended solids = 51 mg / L, oil content: 157 mg / L, MF = 0, SRB = 10 3 pcs / ml, TGB = 10 3 pcs / ml, iron bacteria=10 3 perml, the average corrosion rate is 0.680 mm / a, and the quality of incoming water shows high iron content, high salinity, and strong corrosion and scaling.
[0051] The oilfield sewage sterilization method using electrochemical oxidation combined with ultraviolet and ultrasonic technology is used to treat the oilfield sewage, and the treatment flow rate is: 200 m 3 / h, the wavelength of ultraviolet rays: 365 nm, the frequency of ultrasonic waves: 400 KHz, 10 pairs of electrodes are connected in parallel, the distance between each pair of cathode and anode is 16 mm, the anode material is graphite, the cathode material is graphite, the anode, The thickness of the cathode plate is 35 mm, and ...
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