A2O-D2 synergistic nitrogen and phosphorus removal technology and device
A2O-D2, nitrogen and phosphorus removal technology, applied in aerobic and anaerobic process treatment, degassed water/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., can solve anaerobic phosphorus release in anaerobic pool Efficiency reduction and other issues, to achieve good project utilization value, reduce the impact of hydraulic load, improve the effect of nitrogen removal efficiency
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Embodiment 1
[0075] In this example, a sewage treatment test is carried out on a city in the central and eastern part of my country, with a treatment capacity of 20m 3 / d. In the urban sewage, the average COD of the influent Cr The total nitrogen is 280mg / L, the total nitrogen is 39mg / L, the ammonia nitrogen is 27.5mg / L, and the total phosphorus is 7.6mg / L.
[0076] A 2 O-D 2 The process of synergistic nitrogen and phosphorus removal includes the following steps:
[0077] (1)A 2 O treatment: According to the traditional method, the urban sewage is sequentially introduced into the anaerobic pool, the anoxic pool, and the aerobic pool, and then the aerobic effluent is obtained after the anaerobic, anoxic, and aerobic treatments. The aeration in the traditional aerobic treatment The treatment has the function of mixing and oxygen supply, which increases the dissolved oxygen in the aerobic effluent to ensure that the concentration of dissolved oxygen in the aerobic effluent is 2-3 mg / L; 3...
Embodiment 2
[0084] In this example, a sewage treatment test is carried out on a city in southern my country, with a treatment capacity of 50m 3 / d. In the urban sewage, the average COD of the influent Cr The total nitrogen is 120mg / L, the total nitrogen is 26.7mg / L, the ammonia nitrogen is 23.3mg / L, and the total phosphorus is 2.4mg / L.
[0085] A 2 O-D 2 The process of synergistic nitrogen and phosphorus removal includes the following steps:
[0086] (1)A 2 O treatment: According to the traditional method, the urban sewage is sequentially introduced into the anaerobic pool, the anoxic pool, and the aerobic pool, and then the aerobic effluent is obtained after the anaerobic, anoxic, and aerobic treatments. The aeration in the traditional aerobic treatment The treatment has the function of mixing and oxygen supply, which increases the dissolved oxygen in the aerobic effluent to ensure that the concentration of dissolved oxygen in the aerobic effluent is 2-2.5 mg / L; 3 / 4 of the aerobic e...
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