Heavy metal wastewater treatment agent and its application
A wastewater treatment agent and heavy metal technology, which is applied in water/sewage treatment, special compound water treatment, light water/sewage treatment, etc., can solve the problems of unstable removal effect and secondary pollution treatment cost, and improve the removal effect of heavy metals , High pollutant removal capacity, enhanced adsorption effect
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Embodiment 1
[0060] The present embodiment provides a heavy metal wastewater treatment agent, which comprises components accounting for the following weight percentages of the treatment agent when the heavy metal wastewater treatment agent is in a dry state:
[0061] - 5.0% by weight of carboxylated titanium dioxide;
[0062] - 95.0% by weight of porous ceramic particles containing zero valent iron.
[0063] The heavy metal wastewater treatment agent has a plurality of micropores with a diameter between 20nm and about 70nm.
[0064] 70% of the plurality of micropores have a diameter of 30-50 nm.
[0065] The heavy metal wastewater treatment agent is in the form of particles, and the outer diameter of the particles ranges from 0.1 to 5 mm.
[0066] This embodiment also discloses a method for preparing the above-mentioned heavy metal wastewater treatment agent, which includes: heating the porous ceramic particles containing zero-valent iron to 60°C by far infrared, stirring during the heat...
experiment example 1
[0105] Experimental example 1: Detection of the removal effect of heavy metal wastewater treatment agent on As(V):
[0106] The heavy metal waste water treatment agent in embodiment 1 and comparative examples 2~6 is packed in the glass column of diameter 5cm respectively, connects column with adjustable speed pump; Contact time (V / flow rate) is set to 15,30,60, 90s and 120s. The result is as figure 1 Shown, the result shows that the removal efficiency of As(V) is affected by its initial influent concentration and other parameters, and the column test data shows that the heavy metal wastewater treatment agent in the preferred embodiment 1 of the present invention contains 300ppb As(V, Na 3 AsO 4 ) into the water, it takes less than 70s to achieve a removal rate of 97.0%, and its final As(V) removal rate can reach 99.5%.
experiment example 2
[0107] Experimental example 2: Detection of the removal effect of heavy metal wastewater treatment agent on Pb(II):
[0108] Prepare the filter to remove Pb(II) by filling the cylinder with the heavy metal wastewater treatment agent in Example 1 and Comparative Examples 2~6, and determine that the filter removes 500L waste water (containing Pb(II) in the contact time of 30s 99.5% of Pb(II) in 100ppb), and compared with the Pb(II) removal ability of the heavy metal wastewater treatment agent in Comparative Examples 2~6, 500L waste water (containing Pb(II) 100ppb) was removed at most in the contact time of 30s ) of 65.8% Pb(II).
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