When potassium permanganate is combined with powdered carbon, the dosage of powdered activated carbon is changed under the condition of 0.5 mg/L potassium permanganate, and when the dosage of powdered activated carbon is 20 mg/L. The odor of effluent is 25; when the dosage of powdered activated carbon is increased to 40mg/L, the odor of effluent is reduced to 5 and there is no odor, which is far better than the deodorization effect of potassium permanganate pre-oxidation and powdered activated carbon adsorption. Under the premise of ensuring that the effluent threshold is less than 10, the combination of powdered activated carbon and potassium permanganate can reduce the amount of powdered activated carbon by about 20% compared with the addition of activated carbon alone.
Conclusion, but when the odor threshold of raw water is large (>90), the dosage of powdered activated carbon needs to be increased to 40mg/L, and the odor threshold of effluent can reach 7 without odor and odor, meeting the national drinking water quality standard. . In practical applications, taking into account that the filter can remove a part of the smell and economy, the dosage of powdered activated carbon will be reduced.
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