Compound filling for sewage treatment
A composite filler and sewage treatment technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc. Poor denitrification and dephosphorization effects and other problems, to achieve the effect of small bulk density, convenient management and low cost
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Embodiment 1
[0029] Embodiment 1, the preparation of composite filler I for sewage treatment of the present invention
[0030] Raw materials: natural medical stone, ordinary quicklime, and ordinary powdered cement, the weight ratio of which is 6:9:2.
[0031] The medical stone is simply processed into granules, with an average particle size of about 0.5cm. Mix the quicklime with water in advance to make it fully saturated, and continue soaking for 3 days; then mix the medical stone, quicklime and cement, add a small amount of water and mix well, and then quickly granulate by hand (or mechanically). A coarse granular carrier is formed, which is the sewage treatment composite filler of the present invention. After testing, the average particle size is about 3cm and the particle weight is 30g.
Embodiment 2
[0032] Embodiment 2, the preparation of sewage treatment composite filler II of the present invention
[0033] Raw materials: natural medical stone, quicklime of ordinary type, powdered cement of ordinary type, furnace ash, the ratio of parts by weight is 6:9:2:1.
[0034] Treat the medical stone and furnace ash into particles with a particle size of about 0.2cm. Add water and mix the quicklime in advance to make it fully saturated, and then soak for 4 days; then mix the medical stone, furnace ash, quicklime and cement, add a small amount of After mixing with water and stirring evenly, granulate by manual or mechanical processing to form a rough granular carrier, which is the sewage treatment composite filler of the present invention. After testing, the average particle size is about 3cm and the particle weight is 35g.
Embodiment 3
[0035] Embodiment 3, the preparation of composite filler III for sewage treatment of the present invention
[0036] Raw materials: natural medical stone, common type of quicklime, common type of powdered cement, and paraffin wax, the ratio of parts by weight is 5:8:2:2.
[0037]The medical stone is simply processed into granules with an average particle size of about 0.5cm. The quicklime is added to water and mixed to make it fully saturated, then soaked continuously for 7 days, and the paraffin is heated to dissolve it into a liquid state; then the medical stone, paraffin, Quicklime and cement are mixed, a small amount of water is added and stirred evenly, and then quickly granulated by hand or machine to form a rough granular carrier, which is the composite filler for sewage treatment of the present invention. After testing, the average particle size is about 3cm and the particle weight is 35g.
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