Research and Development of a New Nano-Attapulgite PVF Suspension Carrier in Wastewater Treatment

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The optimum proportion and comprehensive performance as sewage treatment microbial carriers of a new type nanoattapulgite polyvinyl alcohol-formaldehyde suspended carrier (AT-PVF) was researched. The results show that when the polyvinyl alcohol (PVA) dosage is at the range of 10%-16%, H2SO4: PVA plays greatest impact on carrier performance, followed by CH2O: PVA and surfactant, PVA at last. Finally, a new formula of the AT-PVF carrier has been developed, which is showed as follows: PVA 13%, CH2O/PVA weight ratio=0.75, H2SO4/PVA weight ratio=1.0, surfactant 0.5%, AT 0.4%. Test results show that AT-PVF is superior to polyurethane carriers in physical, chemical and biochemical performance.

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96-100

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September 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1002/bit.260210105

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