Method for synchronously removing nitrogen and phosphorus from pig feeding wastewater
A waste water, nitrogen and phosphorus technology, applied in the direction of chemical instruments and methods, animal husbandry wastewater treatment, water pollutants, etc., can solve the problems of low removal efficiency and failure to meet discharge standards, etc., to achieve good removal effect and waste water treatment cost Low, cheap effect
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Embodiment 1
[0037] This embodiment provides a method for synchronously removing nitrogen and phosphorus in pig raising wastewater, utilizing figure 1 The device shown is processed, and the specific operation is as follows.
[0038] First add 1m in electrolytic reactor 1 3 The concentration of ammonia nitrogen and phosphorus is respectively 523mg / L and 90mg / L pig raising wastewater, then add dolomite powder at 10g / L, then add sodium chloride at 2g / L, start the agitator, and connect the DC power supply at the same time 4 is the electrolysis electrode 6 (graphite electrode, the same below) power supply, the stirring and electrolysis time is controlled at 150min, the electrolysis voltage is controlled at 20V, after the reaction is completed, the agitator 3 and the DC power supply 4 are turned off, the solution is allowed to stand for 60min, and the supernatant is discharged from the waste water discharge port 5. The solid-liquid mixture is discharged from the solid-liquid discharge port 2. ...
Embodiment 2
[0041]This embodiment provides a method for synchronously removing nitrogen and phosphorus in pig raising wastewater, and the specific operation is as follows.
[0042] First add 1m in electrolytic reactor 1 3 The concentration of ammonia nitrogen and phosphorus is respectively 523mg / L and 90mg / L pig raising wastewater, then add limestone powder at 20g / L, then add sodium chloride at 8g / L, start the agitator 3, and connect the DC power supply 4 at the same time for electrolysis The electrode 6 is powered, the stirring and electrolysis time is controlled at 200min, the electrolysis voltage is controlled at 25V, after the reaction is completed, the agitator 3 and the DC power supply 4 are turned off, the solution is allowed to stand for 100min, the supernatant is discharged from the waste water discharge port 5, and the solid-liquid mixture Drain port 2 discharge.
[0043] Through the above operation steps, the concentration of ammonia nitrogen in the pig raising wastewater is r...
Embodiment 3
[0045] This embodiment provides a method for synchronously removing nitrogen and phosphorus in pig raising wastewater, and the specific operation is as follows.
[0046] First add 1m in electrolytic reactor 1 3 The concentration of ammonia nitrogen and phosphorus is 523mg / L and 90mg / L pig wastewater respectively, then add dolomite powder and limestone powder mixture (mass ratio is 1:1) at 30g / L, and then add sodium chloride at 10g / L to start Stirrer 3, connect DC power supply 4 to supply power for electrolysis electrode 6 at the same time, stirring electrolysis time is controlled at 250min, and electrolysis voltage is controlled at 30V, closes stirrer 3 and DC power supply 4 after reaction finishes, and solution stands still 120min, and supernatant is from The waste water discharge port 5 is discharged, and the solid-liquid mixture is discharged from the solid-liquid discharge port 2.
[0047] Through the above operation steps, the ammonia nitrogen concentration in the pig wa...
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Abstract
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