Magnesium ammonium phosphate-electrooxidation integrated device and simultaneous nitrogen and phosphorus removing method thereof

A magnesium ammonium phosphate, integrated device technology, applied in chemical instruments and methods, phosphorus compounds, oxidized water/sewage treatment, etc., can solve problems such as difficult simultaneous removal, new pollution, etc., to achieve no secondary pollution and reduce pharmaceutical costs Effect

Active Publication Date: 2016-06-15
JINGDEZHEN CERAMIC UNIV
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Problems solved by technology

[0007] Aiming at the technical problems that it is difficult to simultaneously remove nitrate nitrogen, ammonia nitrogen and phosphate in the sewage treatment process and the treatment based on microbial nitrification and denitrification mechanism is easy to produce new pollution, the present invention provides an integrated device of magnesium ammonium phosphate-electrooxidation and its Simultaneous nitrogen and phosphorus removal method

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  • Magnesium ammonium phosphate-electrooxidation integrated device and simultaneous nitrogen and phosphorus removing method thereof

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Embodiment 1

[0043] A kind of magnesium ammonium phosphate-electrooxidation integrated device of this embodiment, such as figure 1 As shown, it includes magnesium ammonium phosphate electro-oxidation crystallization system and nitrogen electro-oxidation system, ammonium magnesium phosphate electro-oxidation crystallization system includes reactive base and anode B6; nitrogen electro-oxidation system includes reactive base and anode A5; reactive base includes electrochemical instrument 1, Switch 3, reference electrode 4, iron filings 7, cathode 8 and reactor 9, wherein: reference electrode 4 and cathode 8 are connected in parallel through wires, and are respectively connected to electrochemical instrument 1 and suspended in the reactor 9 in a vertical state , the iron filings 7 can be suspended in the reactor 9 by magnetic stirring; the switch 3 and the electrochemical instrument 1 can be switched and connected to the anode A5 and the anode B6 respectively after being connected by wires. Th...

Embodiment 2

[0058] An integrated magnesium ammonium phosphate-electrooxidation integrated device in this embodiment has a basic structure as in Embodiment 1, except that the material of the anode A5 is SnO 2 electrode. The anode A5 and the anode B6 are arranged in parallel back and forth in the reactor 9 . The material of cathode 8 is iron plate. The reference electrode 4 is a silver chloride electrode. Used in the treatment of urban sewage.

[0059] The experimental results show that when the anode material is SnO 2 When the electrode is used, the removal rate of phosphate in urban sewage is 90.3%, but SnO 2 The electrode is beneficial to the accumulation of HO·, and the removal efficiency of nitrate nitrogen is slightly higher than that of the DSA electrode, reaching 95%, but the removal efficiency of ammonia nitrogen is reduced to 91%.

Embodiment 3

[0061] An integrated magnesium ammonium phosphate-electro-oxidation integrated device in this embodiment has the same basic structure as in Embodiment 2, except that it also includes a pH-temperature double display 2 vertically inserted and suspended in the reactor 9 . Anode A5 material is IrO 2 electrode. Anode A5 and anode B6 are arranged side by side in parallel in reactor 9 . Reactor 9 is circular in shape. Used in the treatment of landfill seepage.

[0062] The experimental results show that the circular reactor is conducive to the fluidization of iron filings, and at the same time, there is no dead angle, which is conducive to the growth of magnesium ammonium phosphate crystals, while the large particles of magnesium ammonium phosphate crystals have a faster sedimentation rate and high phosphorus removal efficiency. When the electrooxidized anode is IrO 2 electrode, IrO 2 The electrode has the characteristics of selective oxidation, in Cl - Under the condition of ...

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Abstract

The invention discloses a magnesium ammonium phosphate-electrooxidation integrated device and a simultaneous nitrogen and phosphorus removing method thereof and belongs to the field of wastewater treatment.The magnesium ammonium phosphate-electrooxidation integrated device comprises a magnesium ammonium phosphate-electrooxidation crystallization system and a nitrogen electrooxidation system.The magnesium ammonium phosphate-electrooxidation crystallization system comprises a reaction base and an anode B.The nitrogen electrooxidation system comprises a reaction base and an anode A.Each reaction base comprises an electrochemical instrument, a selector switch, a reference electrode, scrap iron, a cathode and a reactor, wherein the reference electrode and the cathode are connected in parallel through wires and vertically suspended in the reactor after being connected with the electrochemical instrument, the scrap iron can be suspended in the reactor through magnetic force stirring, and the selector switch is connected with the electrochemical instrument through a wire and then are connected with the anode A and the anode B in a switching mode.Just through simple electrode switching, the simultaneous nitrogen and phosphorus removing effect can be achieved, operation is easy, automatic running can be achieved, and no new pollution sources are generated.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an ammonium magnesium phosphate-electrooxidation integrated device and a method for synchronously removing nitrogen and phosphorus for the treatment of urban sewage, garbage seepage, and wastewater from chemical fertilizer plants. Background technique [0002] With the vigorous development of my country's sewage treatment industry, the country's requirements for sewage discharge are becoming more and more stringent. However, the problem of eutrophication caused by nitrogen and phosphorus pollution has not only not been solved, but has become increasingly serious. In 2002, my country's newly promulgated "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002) requires that all urban sewage treatment plant effluents be discharged into rivers with small dilution capacity as urban landscape water and general reuse water, etc., Carry out standard A ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C01B25/45C02F101/16C02F101/10
CPCC01B25/451C02F1/4672C02F2101/105C02F2101/16C02F2101/163
Inventor 余荣台马湘谢志鹏汪长安
Owner JINGDEZHEN CERAMIC UNIV
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