A sodium dichloroisocyanurate-based conditioning process for the improvement of sludge dewaterability and mechanism studies

2021 ◽  
Vol 284 ◽  
pp. 112020
Author(s):  
Yanting Dong ◽  
Yanwen Shen ◽  
Dongdong Ge ◽  
Chang Bian ◽  
Haiping Yuan ◽  
...  
Keyword(s):  
Conditioning Process ◽  
Sodium Dichloroisocyanurate ◽  
Sludge Dewaterability

Improving primary sludge dewaterability by oxidative conditioning process with ferrous ion-activated peroxymonosulfate

2020 ◽  
Vol 37 (9) ◽  
pp. 1498-1506
Author(s):  
Xu Zhou ◽  
Wenbiao Jin ◽  
Lan Wang ◽  
Wanqing Ding ◽  
Chuan Chen ◽  
...  
Keyword(s):  
Ferrous Ion ◽  
Primary Sludge ◽  
Conditioning Process ◽  
Sludge Dewaterability

Dewaterability of Excess Activated Sludge with Fly Ash Conditioning

2013 ◽  
Vol 726-731 ◽  
pp. 2651-2654
Author(s):  
Chang Nian Wu ◽  
Wei Hua Li ◽  
Qi Ling ◽  
Li Wang ◽  
Fa Kang Pan ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Fly Ash ◽  
Activated Sludge ◽  
Extracellular Polymeric Substance ◽  
Specific Resistance ◽  
Coal Fly Ash ◽  
Polymeric Substance ◽  
Conditioning Process ◽  
Sludge Dewaterability ◽  
Sludge Conditioning

The coal fly ash (CFA)/coal fly ash modified by sulfuric acid (MCFA)-conditioned sludge dewaterability was investigated in this study. Specific resistance of filtration (SRF) was used to assess the sludge dewaterability. Extracellular polymeric substance (EPS) was determined in attempt to explain sludge conditioning process. The results showed that SRF of the sludge significantly decreased with coal fly ash addition, and the MCFA showed much stronger conditioning capacity than the raw coal fly ash. Under a MCFA dosage of 36g.L-1, the SRF of the sludge decreased from 1.18×1012 to 6.47×1010 m.kg1, and EPS concentration of the sludge decreased from 32.64 to 17.55mg.L-1. The sludge conditioning mechanisms with MCFA mainly included improving adsorption bridging and providing the water transmitting passages by skeleton builder.

scholarly journals Enhancing dewaterability of waste activated sludge by combined oxidative conditioning process with zero-valent iron and peroxymonosulfate

2017 ◽  
Vol 76 (9) ◽  
pp. 2427-2433 ◽  
Author(s):  
Xu Zhou ◽  
Wenbiao Jin ◽  
Hongyi Chen ◽  
Chuan Chen ◽  
Songfang Han ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Wastewater Treatment Plants ◽  
Zero Valent Iron ◽  
Waste Activated Sludge ◽  
Capillary Suction ◽  
Sludge Flocs ◽  
Sludge Disposal ◽  
Conditioning Process ◽  
Sludge Dewaterability ◽  
Conditioning Approach

Abstract The enhancement of sludge dewaterability is of great importance for facilitating the sludge disposal during the operation of wastewater treatment plants. In this study, a novel oxidative conditioning approach was applied to enhance the dewaterability of waste activated sludge by the combination of zero-valent iron (ZVI) and peroxymonosulfate (PMS). It was found that the dewaterability of sludge was significantly improved after the addition of ZVI (0–4 g/g TSS) (TSS: total suspended solids) and PMS (0–1 g/g TSS). The optimal addition amount of ZVI and PMS was 0.25 g/g TSS and 0.1 g/g TSS, respectively, under which the capillary suction time of the sludge was reduced by approximately 50%. The decomposition of sludge flocs could contribute to the improved sludge dewaterability. Economic analysis demonstrated that the proposed conditioning process with ZVI and PMS was more economical than the ZVI + peroxydisulfate and the traditional Fenton conditioning processes.

A combined ultrasonic and chemical conditioning process for upgrading the sludge dewaterability

2020 ◽  
pp. 1-14
Author(s):  
Reza Barati Rashvanlou ◽  
Hasan Pasalari ◽  
Abbas Ali Moserzadeh ◽  
Mahdi Farzadkia
Keyword(s):  
Conditioning Process ◽  
Sludge Dewaterability

Conditioning: Process or Procedure?

1978 ◽  
Vol 23 (4) ◽  
pp. 230-231
Author(s):  
BEN A. WILLIAMS
Keyword(s):  
Conditioning Process
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