Nitrogen and phosphorus removal method by using pyrite as biochemical filling
A technology for nitrogen and phosphorus removal and pyrite removal, which is applied in the direction of anaerobic digestion treatment, can solve problems such as poor results, and achieve the effects of easy engineering promotion and application, low effluent hardness, and simple operation
Active Publication Date: 2011-02-16
NANJING UNIV
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The invention discloses a nitrogen and phosphorus removal method by using pyrite as biochemical filling, belonging to the field of simultaneous nitrogen and phosphorus removal of low-carbon and nitrogen ratio sewage. The basic principle is as follows: thiobacillus denitrificans is subject to autotrophic denitrification by using sulfur in pyrite as an energy source, and ferrous ions and iron ions generated in the process of denitrification are used to react with phosphate radical to form precipitation so as to remove phosphorus, thus integral nitrogen and phosphorus removal is realized. The method comprises three stages of the preparation of reactor filling, the starting of a reactor and the operation of the reactor, and has the advantages of high process efficiency, low operation cost and low sludge yield. The reactor of the invention also has the advantages of small floor space and convenient operation. The reactor can work continuously, can be used singly in waste water processing, and also can be used as a processing unit of a processing system.
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Property | Measurement | Unit |
Particle size | 2.0 ~ 5.0 | mm |
Particle size | 1.0 ~ 2.0 | mm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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