A kind of ammonium magnesium phosphate-electrooxidation integrated device and its method for synchronous denitrification and dephosphorization
一种磷酸铵镁、集成装置的技术,应用在化学仪器和方法、磷化合物、氧化水/污水处理等方向,能够解决新污染、难同步去除等问题,达到降低药剂费用、不会二次污染的效果
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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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