Flocculating agent for treating organic sewage and method of producing the same
A technology of organic sewage and manufacturing methods, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of complex application process conditions, high process cost and post-treatment cost, large amount of fly ash, etc., and achieve simple operation and easy Large-scale application and low equipment requirements
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Embodiment 1
[0008] Take fly ash and air-dry it to moisture content ≤10%. In a precision grinder or ball mill, the fly ash is pulverized to a particle size range of 60-90 mesh, which is the flocculant fly ash of the present invention. Measure 5 liters of biogas fermentation tail liquid. Accurately weigh 0.5 g of dry fly ash with 60-90 mesh, add it to 5 liters of fermentation tail liquid, and fully stir the biogas fermentation tail liquid containing fly ash with a mechanical booster stirrer for 30 minutes. After stopping the stirring, let it stand for 90 minutes, and you can see the vigorous fermentation tail liquor obviously stratifies. The sludge flocculated and settled can be completely separated from the clear liquid by using a separatory funnel or an ordinary filtering device.
Embodiment 2
[0010] Weigh 10g fly ash, dry it at 200°C for 10 minutes, cool it naturally, and grind it in a mortar. The crushed fly ash is passed through a standard sample sieve, and 90-120 mesh fly ash is harvested, generally 6-7g can be harvested. Measure 5 liters of biogas fermentation tail liquid. Accurately weigh 0.3 g of dry fly ash from 90 to 120 mesh, and add it to 5 liters of fermentation tail liquor. Fully stir the biogas fermentation tail liquor containing fly ash with a mechanical booster for 30 minutes. After stopping the stirring, let it stand for 90 minutes, and you can see the vigorous fermentation tail liquor obviously stratifies. The sludge flocculated and settled can be completely separated from the clear liquid by using a separatory funnel or an ordinary filtering device.
Embodiment 3
[0012] Weigh 2Kg of coal-fired power plant flue fly ash, dry it at 150°C for 50 minutes, cool it naturally, and crush it in a mortar. The pulverized fly ash is passed through a standard sample sieve, and 100-160 mesh fly ash is harvested. Generally, about 1.5Kg can be harvested. Collected, the polluted river water with COD above 2000mg / L was raised to the sewage storage tank in 2000. Weigh 200g of 100-160 mesh dry fly ash and add it to the above-mentioned polluted water body. Use an aeration pump (or mechanical agitator) to fully agitate the Hebang sewage containing fly ash for 30 minutes. After stopping the stirring, let it stand for 120 minutes, and you can see the turbid river water is obviously layered. The supernatant is basically transparent and slightly gray.
[0013] This example illustrates that for polluted river water where a large number of algae (mainly single-celled algae) and microorganisms have been formed, the biological oxygen demand is high, while still containi...
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