Preparation and application method for composite phosphorus removing agent for treating high-concentration phosphorus-containing waste water
A compound phosphorus removal agent, a technology of phosphorus removal agent, applied in chemical instruments and methods, water/sewage treatment, adsorbed water/sewage treatment and other directions, can solve the problem of not being used as a phosphorus removal agent, and achieve low production cost and reaction conditions. Simple, simple ingredients
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Embodiment 1
[0021] a) Take 0.912g of zeolite, 2.83g of sodium silicate, 1.536g of calcium oxide, and 25.0g of water, and place them in a 50mL reactor after being fully stirred. The heating rate is 5°C / min, and the temperature is raised to 180°C for reaction. The reaction time is 10h. Cool and filter to obtain a white solid substance, which is washed and dried to obtain a composite dephosphorization agent.
[0022] b) Use the compound phosphorus removal agent prepared above to treat simulated high-concentration phosphorus-containing wastewater. The phosphorus concentration is 100 mg / L. Add 4.0 g of the compound phosphorus removal agent prepared above to each liter of phosphorus-containing wastewater, stir for 1 hour, and discharge The phosphorus content in the wastewater was 0.2319 mg / L. The removal rate of phosphorus is ≥99.77%.
Embodiment 2
[0024] a) Take 0.912g of zeolite, 2.83g of sodium silicate, 1.400g of calcium oxide, and 25.0g of water, and place them in a 50mL reactor after being fully stirred. The heating rate is 5°C / min, and the temperature is raised to 180°C for reaction. The reaction time is 10h. Cool and filter to obtain a white solid substance, which is washed and dried to obtain a composite dephosphorization agent.
[0025] b) Use the compound phosphorus removal agent prepared above to treat simulated high-concentration phosphorus-containing wastewater, the phosphorus concentration is 50mg / L, add 4.0g of the above-mentioned compound phosphorus removal agent to each liter of phosphorus-containing wastewater, stir for 1 hour, and discharge The phosphorus content in the wastewater was 0.3338 mg / L. The removal rate of phosphorus is ≥99.33%.
Embodiment 3
[0027] a) Take 1.00g of zeolite, 2.50g of sodium silicate, 1.600g of calcium oxide, and 30.0g of water. After fully stirring, place it in a 50mL reactor. The heating rate is 5°C / min, and the temperature is raised to 180°C for reaction. The reaction time is 8h. Cool and filter to obtain a white solid substance, which is washed and dried to obtain a composite dephosphorization agent.
[0028] b) Use the compound phosphorus removal agent prepared above to treat simulated high-concentration phosphorus-containing wastewater. The phosphorus concentration is 20mg / L. Add 4.0g of the above-mentioned compound phosphorus removal agent to each liter of phosphorus-containing wastewater, stir for 1 hour, and discharge The phosphorus content in the wastewater was 0.3433 mg / L. The removal rate of phosphorus is ≥98.28%.
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