Sewage sludge conditioning by Fe(II)-activated persulphate oxidation combined with skeleton builders for enhancing dewaterability

2016 ◽  
Vol 30 (1-2) ◽  
pp. 96-101 ◽  
Author(s):  
Changgeng Liu ◽  
Leiduo Lai ◽  
Xi Yang
Keyword(s):  
Sewage Sludge ◽  
Sludge Conditioning ◽  
Persulphate Oxidation

Changes of some sewage sludge parameters prepared with an ultrasonic field

1997 ◽  
Vol 36 (11) ◽  
pp. 101-106 ◽  
Author(s):  
January Bien ◽  
Lidia Wolny
Keyword(s):  
Sewage Sludge ◽  
Microscopic Analysis ◽  
Chemical Compounds ◽  
Ultrasonic Field ◽  
Water Removal ◽  
Vacuum Filter ◽  
Additional Criterion ◽  
New Methods ◽  
Sludge Conditioning

Studies of sewage sludge conditioning by ultrasonic field concentrate on determination of the increase of water removal effect, which depends on kind of sludge and chemical compounds used in the dewatering process. An attempt was made to find new methods of sludge preparation before dewatering. Tests presented here focused on digested and difficult dewatered sludge. The sludge was dewatered on a vacuum filter after conditioning with polyelectrolytes and the ultrasonic field. The microscopic analysis was an additional criterion to evaluate changes in the sludge structure after preparation. The polyelectrolyte dose of 3 mg/g d.m. sonicated within 15 sec. resulted in the 50% decrease of sludge volume. Results presented confirmed our previous experiences, concerning the relation between conglomerates of sludge and the effect of dewatering.

scholarly journals Ultrasounds Energy as an Agent of Polyelectrolyte Modification Prior to Sewage Sludge Conditioning

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6165
Author(s):  
Lidia Wolny ◽  
Paweł Wolski
Keyword(s):  
Sewage Sludge ◽  
Chemical Compounds ◽  
Ultrasonic Field ◽  
Field Exposure ◽  
Field Frequency ◽  
Geometrical Characteristics ◽  
Sludge Conditioning ◽  
Quantitative Changes ◽  
Ultrasonic Modification ◽  
Shape And Size

The presented research concerned the phenomenon of polyelectrolyte changes resulting from modification by applying the ultrasonic field. The main aim of this research was to determine the activation degree of this macromolecular chemical compound and its effect on sewage sludge subjected to conditioning and followed by dewatering. The overall goal was to investigate the potential way of reducing the dosage of chemical compounds prior to sewage sludge conditioning. The polyelectrolyte samples were sonicated with the ultrasonic disintegrator UD-20 coupled with a sandwich concentrator. The power output of the generator was 180 W and the ultrasonic field frequency was 22 kHz. To describe the geometrical characteristics of the separated phases, the following parameters were determined: surface area (AA), perimeter (LA) and non-dimensional coefficient. With reference to the obtained results, the most significant quantitative changes in shape and size of the separated phases were observed for the ultrasonic field exposure time in the range of 0 to 10 s. This was in agreement with the results observed during dewatering of the investigated sewage sludge. In view of the quantitative analysis of the structure of the polyelectrolyte subjected to the ultrasonic modification, dewatering of sewage sludge was considerably improved by the application of the presented method.

Mechanism of red mud combined with Fenton's reagent in sewage sludge conditioning

2014 ◽  
Vol 59 ◽  
pp. 239-247 ◽  
Author(s):  
Hao Zhang ◽  
Jiakuan Yang ◽  
Wenbo Yu ◽  
Sen Luo ◽  
Li Peng ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Red Mud ◽  
Fenton’S Reagent ◽  
Fenton's Reagent ◽  
Sludge Conditioning

scholarly journals Sewage sludge conditioning and disinfection by gamma irradiation.

1969 ◽  
Vol 59 (11) ◽  
pp. 2067-2076 ◽  
Author(s):  
J E Etzel ◽  
G S Born ◽  
J Stein ◽  
T J Helbing ◽  
G Baney
Keyword(s):  
Sewage Sludge ◽  
Gamma Irradiation ◽  
Sludge Conditioning

scholarly journals Application of an Innovative Ultrasound Disintegrator for Sewage Sludge Conditioning Before Methane Fermentation

2018 ◽  
Vol 19 (5) ◽  
pp. 240-247 ◽  
Author(s):  
Marcin Zieliński ◽  
Marcin Dębowski ◽  
Mirosław Krzemieniewski ◽  
Paulina Rusanowska ◽  
Magdalena Zielińska ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Methane Fermentation ◽  
Sludge Conditioning

Evaluation on different forms ofMoringa oleiferaseeds dosing on sewage sludge conditioning

2009 ◽  
Vol 10 (1-3) ◽  
pp. 87-94 ◽  
Author(s):  
Kien Tat Wai ◽  
Azni Idris ◽  
Megat Mohd Noor Megat Johari ◽  
Thamer A. Mohammad ◽  
Abdul Halim Ghazali ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Sludge Conditioning

Application of microwaves for sewage sludge conditioning

2005 ◽  
Vol 39 (19) ◽  
pp. 4749-4754 ◽  
Author(s):  
Ewa Wojciechowska
Keyword(s):  
Sewage Sludge ◽  
Sludge Conditioning

Roles of iron species and pH optimization on sewage sludge conditioning with Fenton's reagent and lime

2016 ◽  
Vol 95 ◽  
pp. 124-133 ◽  
Author(s):  
Wenbo Yu ◽  
Jiakuan Yang ◽  
Yafei Shi ◽  
Jian Song ◽  
Yao Shi ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Fenton’S Reagent ◽  
Iron Species ◽  
Fenton's Reagent ◽  
Sludge Conditioning ◽  
Ph Optimization
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