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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[0015] Example 1
[0016] Put 1.5L of filtered domestic sewage into a biochemical reactor with an effective volume of 3L, and inoculate the sludge from the anaerobic tank of a municipal sewage treatment plant. The mixed liquid sludge concentration in the reactor is 3120mg / L and the total phosphorus content is 435mg / L; Set up two parallel tests, one of which is administered with exogenous agent Na 2 S 2 O 5 , The dosage is 0.7g / L, and Na is added to the reactor at one time 2 S 2 O 5 Afterwards, stir and mix well, adjust the pH of the mixture to 7.0, pour nitrogen into the reactor to make the dissolved oxygen content in the reactor 0.01mg / L, and then close the reactor; the other group is a blank control, no exogenous agent is added, adjustment The pH value of the mixture reached 7.0. After nitrogen gas was introduced for 3 minutes, the dissolved oxygen content in the reactor was 0.01 mg / L. The reactor was closed; both reactors were placed in a constant temperature water bath at 15°...
Example Embodiment
[0017] Example 2
[0018] Put 1.5L of filtered domestic sewage into a biochemical reactor with an effective volume of 3L, and inoculate the sludge from the anaerobic tank of the municipal sewage treatment plant. The sludge concentration of the mixed liquid in the reactor is 14580mg / L and the total phosphorus content is 2247mg. / L; Set up two parallel tests, one of which is administered with exogenous agent Na 2 S 2 O 5 , The dosage is 1.3g / L, mix well after 2 dosages, adjust the pH value of the mixture to 8.0, and pour nitrogen into the reactor to make the dissolved oxygen content in the reactor 0.05mg / L, in a constant temperature water bath at 25℃ Under the conditions 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 agents, and the environmental conditions such as digestion time and temperature are the same as the test group; the total phosphorus removal rate of the blank control group i...
Example Embodiment
[0019] Example 3
[0020] Put 1.5L of filtered domestic sewage into a biochemical reactor with an effective volume of 3L, and inoculate the anaerobic tank sludge of a municipal sewage treatment plant. The mixed liquid sludge concentration in the reactor is 4330mg / L and the total phosphorus content is 648mg / L; Set up two parallel tests, one of which is administered with exogenous agent Na 2 SO 3 , The dosage is 1.5g / L, after one-time dosing, adjust the pH of the mixed solution to 8.0, and add 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 was not added with exogenous agents, and the environmental conditions such as digestion time and temperature were the same as those of the test group. The total phosphorus removal rate in the blank control group was 0.3%, and the total phosphorus removal rate in the wastewater of the tes...
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