Synchronous denitrification and dephosphorization adsorbent as well as preparation method and application thereof
A simultaneous denitrification and dephosphorization, adsorbent technology, applied in the direction of chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., to achieve the effect of wide sources, low price and improved effect
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Embodiment 1
[0040] Take simulated wastewater with a phosphate concentration of 50mg / L.
[0041] A kind of simultaneous denitrification and dephosphorization adsorbent of this embodiment comprises the calcined product of magnesite powder and zeolite powder, and its preparation steps are:
[0042] (1) Crushing the magnesite ore and passing through a 100-mesh sieve, taking the under-sieve and calcining at 600°C for 4 hours to obtain a calcined product of magnesite powder; crushing and grinding the zeolite, and passing through a 100-mesh sieve to obtain zeolite powder;
[0043] (2) Step (1) The weight ratio of the calcined product to the zeolite powder is 0.5-2:1. After mixing in water, the hydrothermal method is synthesized at 200°C for 36-72 hours, then cooled, and centrifuged to obtain the synthesized product. Simultaneous nitrogen and phosphorus removal adsorbent.
[0044] The application of a kind of simultaneous denitrification and dephosphorization adsorbent in this embodiment, the st...
Embodiment 2
[0049] Application of a simultaneous denitrification and phosphorus removal adsorbent in this embodiment in domestic sewage treatment:
[0050] Take simulated domestic sewage, the concentration of phosphate is 50mg / L, and the concentration of ammonia nitrogen is 20mg / L.
[0051] A kind of simultaneous denitrification and dephosphorization adsorbent of this embodiment and its preparation method and application, its steps are:
[0052] (1) crush the magnesite ore and pass through a 100-mesh sieve, take the under-sieve and calcinate at 1000°C for 1 hour to obtain a calcined product; crush and grind the zeolite, and pass through a 100-mesh sieve to obtain zeolite powder;
[0053] (2) Step (1) The weight ratio of the calcined product to the zeolite powder is 0.5 to 2:1. After mixing, ball milling is carried out first. The ball milling time is 30min, and the speed is 300r / min; , synthesized by hydrothermal method for 36-72 hours, then cooled, centrifuged and filtered to obtain the ...
Embodiment 3
[0060] The application of a simultaneous denitrification and phosphorus removal adsorbent in this embodiment in the treatment of chemical wastewater:
[0061] Take the simulated chemical wastewater, the concentration of phosphate is 50mg / L, and the concentration of ammonia nitrogen is 20mg / L.
[0062] A kind of simultaneous denitrification and dephosphorization adsorbent of this embodiment and its preparation method and application, its steps are:
[0063] (1) crush the magnesite ore and pass through a 100-mesh sieve, take the under-sieve and calcinate at 800°C for 3 hours to obtain a calcined product; crush and grind the zeolite, and pass through a 100-mesh sieve to obtain zeolite powder;
[0064] (2) Step (1) The weight ratio of the calcined product to the zeolite powder is 1:1, and ball milling is carried out after mixing, the ball milling time is 90min, and the rotating speed is 100r / min; Synthesize by thermal method for 50h, then cool down, and centrifuge to filter to ob...
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