Study on Improving Biodegradability of Straw Pulp Papermaking Wastewater by Coagu-Flocculation and Nuclear-Flocculation

Xiao Qiao Song

doi:10.4028/www.scientific.net/AMR.926-930.4361

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 926-930Study on Improving Biodegradability of Straw Pulp...

Study on Improving Biodegradability of Straw Pulp Papermaking Wastewater by Coagu-Flocculation and Nuclear-Flocculation

Abstract:

When straw pulp papermaking wastewater was treated by the process of coagu-flocculation and nuclear-flocculation, there were still high COD_Cr. UV₂₅₄ can reflect organic pollutants and organic pollutants of unsaturated aromatic ring, carbon-carbon double bond. With the decrease of molecular weight of organic pollutants, absorption of ultraviolet light will decrease. Indirectly, it reflectd that the combination process had a good removal effect on high molecular aromatic hydrocarbons difficult to be biodegraded. Meanwhile it can improve the the biodegradability. It used the activated sludge process as subsequent process of coagulation and-flocculation process. The test results showed that the removal rate of COD_Cr was 24.1%, COD_Cr was the 88.1mg/L. It reached effluent standard.

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Periodical:

Advanced Materials Research (Volumes 926-930)

Pages:

4361-4364

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.926-930.4361

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Online since:

May 2014

Authors:

Xiao Qiao Song

Keywords:

Biodegradability, COD_Cr, UV₂₅₄

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