Method for strengthening anaerobic organism phosphorus removal of waste water
An anaerobic biology and wastewater technology, applied in chemical instruments and methods, water pollutants, anaerobic digestion treatment, etc., can solve problems such as complex process, achieve simple process, achieve standard discharge, and obvious phosphorus removal effect Effect
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Embodiment 1
[0016] Put 1.5L of filtered domestic sewage into a biochemical reactor with an effective volume of 3L, and inoculate the anaerobic pool sludge of the urban sewage treatment plant. The concentration of the mixed liquid sludge in the reactor is 3120mg / L, and the total phosphorus content is 435mg / L; Two groups of parallel experiments were set up, one of which was dosed with exogenous agent Na 2 S 2 o 5 , the dosage is 0.7g / L, Na is added to the reactor at one time 2 S 2 o 5 Finally, stir and mix well, and adjust the pH value of the mixture to 7.0, feed nitrogen to make the dissolved oxygen content in the reactor 0.01mg / L, and then close the reactor; The pH value of the mixture was 7.0, and the dissolved oxygen content in the reactor was 0.01 mg / L after nitrogen gas was introduced for 3 minutes, and the reactor was closed; both sets of reactors were placed in a constant temperature water bath at 15°C for anaerobic digestion for 144 hours; the reactor was shaken, Take an appr...
Embodiment 2
[0018] Put 1.5L of filtered domestic sewage into a biochemical reactor with an effective volume of 3L, and inoculate the anaerobic pool sludge from the urban sewage treatment plant. The mixed liquid sludge concentration in the reactor is 14580mg / L, and the total phosphorus content is 2247mg / L; Two groups of parallel experiments were set up, one of which was dosed with exogenous agent Na 2 S 2 o 5 , the dosage is 1.3g / L, add in 2 times and mix well, adjust the pH value of the mixture to 8.0, and pass nitrogen gas to make the dissolved oxygen content in the reactor 0.05mg / L, and put it in a constant temperature water bath at 25°C Under the condition of anaerobic digestion for 120h, the rest of the operation process is the same as in Example 1; the blank control group does not add exogenous medicaments, and the environmental conditions such as digestion time and temperature are the same as those of the test group; the total phosphorus removal rate of the blank control group is ...
Embodiment 3
[0020] Put 1.5L of filtered domestic sewage into a biochemical reactor with an effective volume of 3L, and inoculate the anaerobic pool sludge of the urban sewage treatment plant. The concentration of the mixed liquid sludge in the reactor is 4330mg / L, and the total phosphorus content is 648mg / L; Two groups of parallel experiments were set up, one of which was dosed with exogenous agent Na 2 SO 3 , the dosage is 1.5g / L. After one-time dosing, adjust the pH value of the mixture to 8.0, and feed nitrogen to make the dissolved oxygen content in the reactor 0.1mg / L. Oxygen digestion was performed for 100 hours, and the rest of the operation process was the same as in Example 1; the blank control group did not add exogenous agents, and the environmental conditions such as digestion time and temperature were the same as those of the test group. The removal rate of total phosphorus in the blank control group was 0.3%, and the removal rate of total phosphorus in the test group added...
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