EFFECT OF SODIUM PERIODATE-APAM CONJUNCTION ON DEWATERABILITY OF WASTE ACTIVATED SLUDGE

LAN Bing-bing; JIN Ruo-fei; LIU Yan-song; LIU Guang-fei; ZHOU Ji-ti

doi:10.13205/j.hjgc.202007019

Volume 38 Issue 7

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(7): 122-126

LAN Bing-bing, JIN Ruo-fei, LIU Yan-song, LIU Guang-fei, ZHOU Ji-ti. EFFECT OF SODIUM PERIODATE-APAM CONJUNCTION ON DEWATERABILITY OF WASTE ACTIVATED SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(7): 122-126. doi: 10.13205/j.hjgc.202007019

Citation:

LAN Bing-bing, JIN Ruo-fei, LIU Yan-song, LIU Guang-fei, ZHOU Ji-ti. EFFECT OF SODIUM PERIODATE-APAM CONJUNCTION ON DEWATERABILITY OF WASTE ACTIVATED SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(7): 122-126. doi: 10.13205/j.hjgc.202007019

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EFFECT OF SODIUM PERIODATE-APAM CONJUNCTION ON DEWATERABILITY OF WASTE ACTIVATED SLUDGE

doi: 10.13205/j.hjgc.202007019

Dalian University of Technology, School of Environmental Science and Technology, Dalian 116024, China

Received Date: 2020-05-15

Abstract

Abstract

The dewaterability of waste activated sludge was improved by sodium periodate and anionic polyacrylamide (APAM) conjunction. Sludge dewaterability was determined by specific resistance to filtration and the sludge moisture content, and the contents of protein and polysaccharide in extracellular polymers substances (EPS), as well as zeta potential and particle size of the sludge were also determined. The result indicated that 88 mg/g DS (dry sludge) sodium periodate and 2 mg/g DS APAM could effectively improve sludge dewaterability under pH of 8, and specific resistance to filtration and the sludge moisture content decreased to 4.82×10¹² m/kg and 69.67%, respectively. After the oxidation of sodium periodate, the zeta potential of sludge increased, protein content of soluble extracellular polymeric substances increased. Fluorescence spectroscopy showed that humic acid in soluble extracellular polymeric substances was oxidized, and the particle size of sludge decreased. The combined conditioner can effectively improve sludge dewaterability and facilitate the subsequent sludge treatment and disposal.
- sludge dewatering,
- sodium periodate,
- anionic polyacrylamide,
- specific resistance to filtration

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References(22)

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