Flocculating agent and preparation method of flocculating agent
A flocculant and formula technology, applied in the field of flocculant and its preparation, can solve the problems of low coagulation efficiency and unsatisfactory effect, and achieve high coagulation efficiency and good effect
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Embodiment 1
[0020] The flocculant raw material formula of the present embodiment is made up of each component of following parts by weight:
[0021] 50 parts of polyacrylamide;
[0022] 5 parts of magnesium sulfate;
[0023] Attapulgite 5 parts;
[0024] 5 parts of aluminum sulfate.
[0025] The preparation process of the flocculant of the present embodiment is as follows:
[0026] A1, put attapulgite into sulfuric acid solution, stir for 5 minutes, soak for 20 minutes, the concentration of sulfuric acid solution is 1.5mol / L;
[0027] A2, add polyacrylamide, stir for 10 minutes;
[0028] A3, add magnesium sulfate and aluminum sulfate, continue stirring for 10 minutes, then soak for 30 minutes;
[0029] A4. After filtering, take the filter residue and dry it to obtain flocculant.
[0030] The flocculant obtained in this embodiment has high coagulation efficiency and good effect, and is especially suitable for treating printing and dyeing wastewater. After testing, taking 0.1 g of th...
Embodiment 2
[0032] This example is basically the same as Example 1, except that the raw material formula of the flocculant in this example is composed of the following components in parts by weight:
[0033] 60 parts of polyacrylamide;
[0034] 7 parts of magnesium sulfate;
[0035] 7 parts of attapulgite;
[0036] 6 parts of aluminum sulfate.
[0037] The flocculant provided in this example is more efficient than that in Example 1. After testing, taking 0.1 g of the flocculant prepared in this example and adding it to 1 L of printing and dyeing wastewater only takes 24 minutes to achieve the treatment effect of Example 1. When treated for 30 minutes, the decolorization rate of printing and dyeing sewage reached 92.8%, and the removal rate of CODcr in printing and dyeing sewage was 80%.
Embodiment 3
[0039] This example is basically the same as Example 2. The difference is that this example also includes 0.5-2 parts of water hyacinth root extract. Store for 24 hours, take it out, crush it, pour in ionized water twice the mass of the water hyacinth root, soak it for 3 hours at 35~40°C, and then perform ultrasonic vibration for 30 minutes, and the filtrate obtained by filtration is the water hyacinth root extract .
[0040] The preparation method of this embodiment is basically the same as that of Example 1. The difference is that in step A4, it also includes adding water hyacinth root extract to the dried filter residue, leaving it to stand for 30 minutes until it is fused, and then adding the water hyacinth root extract at temperature Low-temperature drying at 40-45°C to obtain flocculants.
[0041] The addition of water hyacinth root extract is beneficial to improve the flocculation efficiency of polyacrylamide. The flocculant in this example is more efficient than that ...
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Abstract
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