Method for treating nitrogen and phosphorus in wastewater through the biological combination process of electrolytic oxidation and sequence batch reactor
A combined treatment and electrolytic oxidation technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of long hydraulic retention time, large floor area, nitrogen and phosphorus treatment Unstable efficiency and other issues, to achieve the effect of low operating costs, low investment, and high processing efficiency
Active Publication Date: 2011-07-13
UNIVERSTAR SCI & TECH SHENZHEN
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[0004] The traditional biological method has the disadvantages of long hydraulic retention time, large footprint, unstable nitrogen and phosphorus treatment efficiency, etc.
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[0026] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings.
[0027] A device for the combined treatment of nitrogen and phosphorus in wastewater by electrolytic oxidation and SBR biology includes a fine grid 1, a pH adjustment tank 2, an electrolytic tank 3, an SBR reactor 9 and a sludge tank 15 connected in sequence. Among them, the electrolytic cell 3 contains a 2:1 ratio of columnar activated carbon and a filler mixed with smeared activated carbon, an anode plate using RuO2-IrO2-TiO2 / Ti and a cathode plate using graphite; the electrolytic cell 3 is connected to a storage tank through a circulating pump 13 Water tank 14; Aeration heads 12 are evenly distributed at the bottom of SBR reactor 9, aeration air compressor 16 is set outside SBR reactor 9 and connected to each aeration head 12 through flow meter 17, SBR reactor 9 is provided with The stirring device 10, and the movable and dismounting perfor...
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The invention discloses a method for treating nitrogen and phosphorus in wastewater through the biological combination process of electrolytic oxidation and sequence batch reactor (SBR). The method comprises the following steps: (1) the suspended matter in wastewater is removed by a fine grid, wherein the solid is dewatered and transferred to the outside for backfill and the liquid enters a pH adjusting tank; (2) NaOH is added in the pH adjusting tank to adjust the pH value to 8-10 under stirring, the obtained mixed solution enters an electrolytic cell; (3) the mixed solution obtained in the step (2) is electrolyzed by the electrolytic cell, the electrolytic effluent enters the SBR; (4) the electrolyte obtained in the step (3) enters the SBR, the anaerobic and aerobic treatments are performed alternately through automatic control; (5) the sludge of the SBR is introduced in a sludge tank by a pump, the sludge is discharged from the bottom of the tank after the reaction, the sludge is concentrated; and (6) the treated water performs the treatments such as deep sterilization and then is directly discharged. The method has the advantages of high efficiency, low energy consumption and easy operation and management.
Description
Technical field [0001] The invention relates to a waste water treatment system, in particular to a method for combined treatment of nitrogen and phosphorus in waste water by electrolytic oxidation and SBR with high efficiency, low energy consumption and easy operation and management. Background technique [0002] For a long time, the treatment of nitrogen, phosphorus and other nutrients has been neglected in the treatment of urban sewage, and a large amount of untreated or inadequately treated nitrogen and phosphorus-containing wastewater is discharged, which has seriously affected the quality of surface water and caused eutrophication of water bodies. Therefore, the requirements of cities for the removal of nitrogen and phosphorus from wastewater are becoming more urgent. [0003] Wastewater dephosphorization and denitrification technology has always been a hot spot and a difficult point in the field of sewage treatment. With the improvement of water environmental quality requirem...
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Inventor 何姝李艳丽杜娟
Owner UNIVERSTAR SCI & TECH SHENZHEN