Industrial wastewater treatment method based on high-frequency intensified flocculation
A technology for industrial wastewater and treatment methods, which is applied in the fields of chemical industry and environmental protection, can solve problems such as membrane damage and biochemical system hazards, and achieve the effects of prolonging service life, reducing operating costs, and reducing the amount of PAM
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Embodiment 1
[0028] An industrial wastewater treatment method based on high-frequency enhanced flocculation. If it is chemical wastewater with high COD, the specific steps are:
[0029] ①: According to the pH of industrial wastewater, add acidic or alkaline substances to adjust the pH of wastewater to 2~3.5;
[0030] ②: To predict the content of waste water COD and other substances that need Fenton oxidation, add a certain concentration of ferrous sulfate and hydrogen peroxide in a certain proportion;
[0031] ③: The waste water after Fenton reaction is blown into air to blow off a small amount of gas in the waste water;
[0032] ④: Add alkaline substances such as lime or sodium hydroxide to adjust the pH of wastewater to form hydroxide precipitation;
[0033] ⑤: Add an appropriate amount of PAC water solution, and stir quickly to mix the medicament thoroughly;
[0034] ⑥: Pass the waste water in step ⑤ through the high-frequency equipment at a certain flow rate, and its frequency range is between 30...
Embodiment 2
[0039] An industrial wastewater treatment method based on high-frequency enhanced flocculation. If it is wastewater containing heavy metals, the specific steps are:
[0040] ①: Add alkaline substances such as lime or sodium hydroxide to wastewater containing heavy metals to adjust the pH of the wastewater to form hydroxide precipitation;
[0041] ②: Add an appropriate amount of PAC water solution, and stir quickly to make the agent fully mixed;
[0042] ③: Pass the wastewater in step ② through the high-frequency equipment at a certain flow rate, and its frequency range is between 300KHz and 300GHz. The wastewater resonates under the action of high-frequency electromagnetic field, which promotes the destabilization and diffusion of particles in the water, and not only reduces PAC and 30%~60% of the PAM dosage, it also forms high-density, high-strength flocs, shortens the residence time by 20%-40%, lowers the turbidity of the supernatant in the sedimentation tank, and reduces the possi...
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