Preparation method of high-efficiency eutrophic water body phosphorus removal recoverable biological ceramsite and method for recovering phosphorus from ceramsite and regenerating biological ceramsite
A biological ceramsite and eutrophication technology, applied in chemical instruments and methods, biological water/sewage treatment, clay products, etc., can solve problems such as poor phosphorus adsorption effect, achieve significant phosphorus removal effect, reduce or control phosphorus effect of concentration
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Embodiment 1
[0015] Dry the river channel dredging bottom mud until the water content is below 20%, crush it through a 100-mesh sieve; cut the stalks of Cymbidium spp. into small pieces, crush them, and pass through a 100-mesh sieve. The dredged bottom sludge and the stalks of Xanthus spp. were impregnated with zinc chloride with a mass fraction of 50% to activate them respectively. The impregnation ratio was 1:2.5, and the impregnation time was 24 hours. Then take 30 g of dredging bottom mud after impregnation and activation treatment, 2 g of chrysanthemum straw, 2 g of coal, and 6 g of cement, mix them evenly, add appropriate amount of water, send them into a ball disc to form balls, and dry until the moisture content is less than 20%. Put it in a muffle furnace, preheat at 350°C for 30 min, and then heat it at 3°C•min -1 The temperature was raised to 1060 °C, held for 30 minutes, and cooled to room temperature naturally to prepare high-efficiency phosphorus-removing bio-ceramsite. The ...
Embodiment 2
[0017] Dry the river channel dredging bottom mud until the water content is below 20%, crush it through a 100-mesh sieve; cut the stalks of Cymbidium spp. into small pieces, crush them, and pass through a 100-mesh sieve. The dredged bottom sludge and the stalks of Xanthus spp. were impregnated with zinc chloride with a mass fraction of 50% to activate them respectively, the impregnation ratio was 1:2, and the impregnation time was 24 hours. Then take 30 g of dredging bottom mud, 3 g of chrysanthemum stalks, 3 g of coal, and 5 g of cement, mixed evenly, add appropriate amount of water, and send them into ball discs to form balls, and dry until the moisture content is less than 20%. Put it in a muffle furnace, preheat at 350°C for 30 min, and then heat it at 3°C•min -1 The temperature was raised to 1060 °C, kept for 45 minutes, and naturally cooled to room temperature to obtain high-efficiency phosphorus removal bio-ceramsite. The water absorption rate of phosphorus removal bio...
Embodiment 3
[0019] Dry the river channel dredging bottom mud until the water content is below 20%, crush it through a 100-mesh sieve; cut the stalks of Cymbidium spp. into small pieces, crush them, and pass through a 100-mesh sieve. The dredged bottom sludge and the stalks of Xanthus spp. were impregnated with zinc chloride with a mass fraction of 40% to activate them respectively, the impregnation ratio was 1:2, and the impregnation time was 24 hours. Then take 30 g of dredging bottom mud, 3 g of chrysanthemum stalks, 3 g of coal, and 6 g of cement, mixed evenly, add appropriate amount of water, send them into ball discs to form balls, and dry until the moisture content is less than 20%. Put it in a muffle furnace, preheat at 350°C for 30 min, and then heat it at 3°C•min -1 The temperature was raised to 1080 °C, kept for 15 minutes, and cooled to room temperature naturally to obtain phosphorus-removing biological ceramsite. The water absorption rate of phosphorus removal biological cera...
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