Method for removing phosphorus from sewage on basis of magnesium alloy corrosion
A magnesium alloy and magnesium alloy plate technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as side reactions
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Embodiment 1
[0013] A method for removing phosphorus in sewage based on magnesium alloy corrosion, including the following steps: the biogas slurry supernatant contains high nitrogen and phosphorus, and magnesium alloy is added to the precipitation reactor in the biogas slurry supernatant, which will contain a certain quality of magnesium The magnesium alloy plate is immersed in wastewater, and the precipitated magnesium ammonium phosphate can be recovered after a period of time.
[0014] The specific principle is as follows: Magnesium alloys slowly corrode in wastewater to release magnesium ions, and react with the ammonium and phosphate groups inherent in the wastewater to form magnesium ammonium phosphate crystals, which can strengthen the phosphorus removal effect and the nitrogen removal process, and realize the phosphorus removal of the wastewater. Denitrification dual role, the recovered magnesium ammonium phosphate contains both N and P.
[0015] The nitrogen content in the wastewater i...
Embodiment 2
[0021] A method for removing phosphorus in sewage based on magnesium alloy corrosion, including the following steps: in a rural wastewater treatment device, a magnesium alloy plate containing a certain quality of magnesium is immersed in the wastewater, and the precipitated magnesium ammonium phosphate can be recovered after a period of time .
[0022] The specific principle is as follows: Magnesium alloys slowly corrode in wastewater to release magnesium ions, and react with the ammonium and phosphate groups inherent in the wastewater to form magnesium ammonium phosphate crystals, which can strengthen the phosphorus removal effect and the nitrogen removal process, and realize the phosphorus removal of the wastewater. Denitrification dual role, the recovered magnesium ammonium phosphate contains both N and P.
[0023] The nitrogen content in the wastewater is 0.003mol / L, the phosphorus content is 0.00015mol / L, and the total amount of wastewater that needs to be treated is 10m³ / d.
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