A method of biological-electrochemical coupling technology for treating pyridine pesticide wastewater
A technology for technical treatment and pesticide wastewater, which is applied in the field of biological-electrochemical coupling technology to treat pyridine pesticide wastewater, which can solve the problem that the removal rate of COD and total nitrogen cannot meet the requirements of taking over.
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Embodiment 1
[0046] Such as figure 1 As shown, this embodiment provides a method for treating pyridine pesticide wastewater by bio-electrochemical coupling technology, wherein the pyridine pesticide wastewater is the pyridine pesticide wastewater from the first workshop of a pesticide enterprise in Binhai, Jiangsu, and is treated at an ambient temperature of 20°C. Proceed as follows:
[0047] (1) Pyridine wastewater enters the collection pool of the terminal sewage station after steaming and resin adsorption in the workshop;
[0048] (2) The waste water from the collection pond is pumped into the biochemical adjustment pond, the pH value is adjusted to 7 with sodium carbonate, and 50 mg / L sodium nitrate is added simultaneously to carry out homogenization and equalization;
[0049] (3) waste water in step (2) enters the microbial treatment section of UBF+O / A / O, UBF anaerobic residence time 60h, O section residence time 60h, A section residence time 20h, secondary O section with 100% The r...
Embodiment 2
[0062] Such as figure 1 As shown, this embodiment provides a method for treating pyridine pesticide wastewater by bio-electrochemical coupling technology, wherein the pyridine pesticide wastewater is picoline pesticide wastewater, and at an ambient temperature of 15°C, the treatment steps are as follows:
[0063] (1) Pyridine waste water is pretreated by stripping in the workshop and then enters the collection pool of the terminal sewage station;
[0064] (2) Pump the waste water from the collection pond into the biochemical adjustment pond, adjust the pH value to 7.5 with sodium carbonate, and add a mixture of 60 mg / L sodium nitrate and sodium nitrite at a mass ratio of 1:1 at the same time for homogenization and equalization;
[0065] (3) waste water in step (2) is entered into the microbial treatment section of UBF+O / A / O, UBF anaerobic residence time 72h, O section residence time 72h, A section residence time 16h, secondary O section with 200% The reflux ratio returns to s...
Embodiment 3
[0073] Such as figure 1 As shown, this example provides a method for treating pyridine pesticide wastewater by bio-electrochemical coupling technology, wherein the pyridine pesticide wastewater is 3-cyanopyridine pesticide intermediate wastewater, and the treatment steps are as follows at an ambient temperature of 10°C:
[0074] (1) Pyridine wastewater enters the collection pool of the terminal sewage station after being adsorbed by resin in the workshop;
[0075] (2) Pump the waste water from the collection pond into the biochemical adjustment pond, adjust the pH value to 8 with sodium carbonate, and add 30 mg / L sodium nitrite simultaneously to carry out homogenization and equalization;
[0076] (3) waste water in step (2) is entered into the microbial treatment section of UBF+O / A / O, UBF anaerobic residence time 36h, O section residence time 84h, A section residence time 36h, secondary O section with 400% The reflux ratio returns to section A, and the effluent flows to the s...
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