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Preparation method of sludge ceramsite capable of slowly releasing trace metal elements including copper and nickel
A preparation method of sludge ceramsite capable of slowly releasing trace metal elements including copper and nickel is implemented as follows: sludge, coal ash and clay of a sewage plant are dried respectively and sieved with a 200-mesh sieve, 3-5 g of sludge, 6-8 g of coal ash and 8-10 g of clay are weighed and stirred uniformly, an appropriate amount of water is slowly added to the mixture and sufficiently stirred, the mixture is put in a press machine and subjected to extrusion forming, raw ceramsite with the diameter of 4-6 mm is obtained, dried at the temperature of 100 DEG C, preheated for 20 min and calcined at the temperature of 1,050 DEG C for 16 min, and the sludge ceramsite is prepared; the ceramsite is put into a mixed solution containing CuCl2 and NiCl2 to be soaked, then taken out and dried for standby application; a cladding material is prepared by mixing epoxy resin, acidamide resin, an ethanol solution and starch, soaked and well dried ceramsite is added and stirred, accordingly, the surface of the ceramsite is uniformly coated with the mixture and put in a drying oven to be dried, and the sludge ceramsite capable of slowly releasing the trace metal elements including copper and nickel is prepared. The ceramsite is applicable to anaerobic biological treatment of organic wastewater lack of trace metals Cu2+ and Ni2+, and the COD (chemical oxygen demand) removal rate of the wastewater can be increased by more than 12%.
Preparation method of sludge ceramsite capable of slowly releasing trace metal elements including copper and nickel
A preparation method of sludge ceramsite capable of slowly releasing trace metal elements including copper and nickel is implemented as follows: sludge, coal ash and clay of a sewage plant are dried respectively and sieved with a 200-mesh sieve, 3-5 g of sludge, 6-8 g of coal ash and 8-10 g of clay are weighed and stirred uniformly, an appropriate amount of water is slowly added to the mixture and sufficiently stirred, the mixture is put in a press machine and subjected to extrusion forming, raw ceramsite with the diameter of 4-6 mm is obtained, dried at the temperature of 100 DEG C, preheated for 20 min and calcined at the temperature of 1,050 DEG C for 16 min, and the sludge ceramsite is prepared; the ceramsite is put into a mixed solution containing CuCl2 and NiCl2 to be soaked, then taken out and dried for standby application; a cladding material is prepared by mixing epoxy resin, acidamide resin, an ethanol solution and starch, soaked and well dried ceramsite is added and stirred, accordingly, the surface of the ceramsite is uniformly coated with the mixture and put in a drying oven to be dried, and the sludge ceramsite capable of slowly releasing the trace metal elements including copper and nickel is prepared. The ceramsite is applicable to anaerobic biological treatment of organic wastewater lack of trace metals Cu2+ and Ni2+, and the COD (chemical oxygen demand) removal rate of the wastewater can be increased by more than 12%.
Preparation method of sludge ceramsite capable of slowly releasing trace metal elements including copper and nickel
SU HUIDONG (author) / SHI DONGLING (author) / CHEN WENCHAO (author) / ZHAO XIAOMING (author) / WANG WEIGUANG (author)
2015-07-29
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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