A method for treating acid-containing waste water produced in the production process of acidified oil
A technology of production process and treatment method, applied in the field of wastewater treatment, can solve the problems of no treatment process, miscellaneous salts, difficult treatment, etc., and achieve the effect of easy post-treatment
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Embodiment 1
[0059] The acid-containing wastewater produced in the production process of acidified oil is subjected to oil-separation treatment to obtain the oil-separated wastewater; the temperature of the oil-separated wastewater is adjusted to 26°C, and the mass concentration is 10% calcium oxide suspension for neutralization for 1 hour , adjust the pH of the neutralized sewage to 9, and then filter through the plate and frame filter press. After the filter, the filtrate passes through the concentrated evaporator and runs for 45 days. The treated water volume is 6.5m 3 / h (without pretreatment, the processing capacity is 6m 3 / h), the current of the forced circulation pump is kept at 133-135A, and the COD of the distillate after evaporation is 700-770mg / L. The concentrated evaporated distillate enters the aerobic tank for aerobic treatment. After two days of testing, it reaches the emission standard. The COD is 25-30mg / L, the total phosphorus (TP) is 0.3mg / L, and the SO 4- It is 12-20m...
Embodiment 2
[0061] The acid-containing wastewater produced in the production process of acidified oil is subjected to oil-separation treatment to obtain the oil-separated wastewater; the temperature of the oil-separated wastewater is adjusted to 30°C, and the pH is adjusted to 8.5 through 10% calcium oxide suspension, and stirred for half an hour , add 10% polyaluminum chloride solution, the addition amount is 5% of the sewage, stir at a slow speed for half an hour, press filter through a plate and frame filter press, and evaporate the filtrate through a concentrated evaporator, and the COD of the distillate after evaporation is 700 ~750mg / L, running for 50 days, the water treatment volume per hour is 6.5m 3 , Forced circulation pump current is 132 ~ 133A. The concentrated evaporated distillate enters the aerobic tank for aerobic treatment. After two days of testing, it reaches the emission standard. The COD is 25-30mg / L, the total phosphorus (TP) is 0.1-0.3mg / L, and the SO 4- The concen...
Embodiment 3
[0063] The acid-containing wastewater produced in the production process of acidified oil is subjected to oil-separation treatment to obtain oil-separated wastewater; the temperature of the oil-separated wastewater is adjusted to 22°C, and the pH is adjusted to 8.2-8.8 through 12% calcium oxide suspension, and stirred Half an hour, add mass concentration and be 5% polyaluminum chloride solution, the addition is 5% of sewage quality, stir at a slow speed for half an hour, then add the PAM solution that mass concentration is 2‰, addition is 1% of sewage quality, Continue to stir at a slow speed for 20 minutes, press filter through a plate and frame filter press, and evaporate the filtrate through a concentrated evaporator. 3 , Forced circulation pump current is 132 ~ 133A. The concentrated evaporated distillate enters the aerobic tank for aerobic treatment. After two days of testing, it reaches the emission standard. The COD is 20-25mg / L, the total phosphorus (TP) is 0.1-0.2mg / L...
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