Optimization of alum recovery from water treatment sludge‐case study: Samannoud water treatment plant, Egypt

2019 ◽  
Vol 34 (3) ◽  
pp. 464-473 ◽  
Author(s):  
Hassan Ramadan ◽  
Abd El Aziz El Sayed
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Treatment Sludge

scholarly journals Effect of ultrasonic and thermal disintegration of water treatment sludge

2018 ◽  
Vol 44 ◽  
pp. 00045
Author(s):  
Justyna Górka ◽  
MaŁgorzata Cimochowicz-Rybicka ◽  
Beata Fryźlewicz-Kozak
Keyword(s):  
Water Treatment ◽  
Main Parameter ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Treatment Sludge ◽  
Disintegration Process ◽  
Municipal Water ◽  
Ultrasound Intensity ◽  
Sludge Production

This research was conducted to evaluate the effects of thermal and ultrasound disintegration on the disintegration degree (DD) of water treatment sludge from a municipal water treatment plant. A disintegration process was used to (i) improve subsequent coagulation efficiencies and dewatering processes (ii) reduce sludge production, and (iii) obtain both economic and enviromental benefits. The results show that using the disintegration process has an influence on DD values. It is also worth emphasising that the main parameter determining the efficiency of ultrasonic and thermal disintegration was the time of the applied process. Other parameters such as ultrasound intensity and temperature had a reduced impact on DD values.

PROPERTIES AND PERFORMANCE OF WATER TREATMENT SLUDGE (WTS)-CLAY BRICKS

2015 ◽  
Vol 77 (32) ◽  
Author(s):  
Mohd Asri Md Nor ◽  
Alia Syafiqah Abdul Hamed ◽  
Faisal Hj Ali ◽  
Ong Keat Khim
Keyword(s):  
Compressive Strength ◽  
Water Treatment ◽  
Water Absorption ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Treatment Sludge ◽  
X Ray ◽  
Clay Bricks ◽  
Firing Shrinkage ◽  
And Performance

Every year, large quantity of water treatment sludge (WTS) is produced from water treatment plant in Malaysia. Sanitary landfill disposal of sludge at authorized sites is the common practice in Malaysia. However, searching the suitable site for landfill is the major problem as the amount of sludge produced keeps on increasing. Reuse of the sludge could be an alternative to disposal. This study investigated the reusability of WTS as brick making material. The performance of clay-WTS bricks produced by mixing clay with different percentages of WTS with increments of 20% from 0% up to 100% was investigated. Each molded brick with optimum moisture content was pressed under constant pressure, oven-dried at 100˚C for 24 hours followed by heating at 600˚C for 2 hours and 1000˚C for 3 hours. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analysis were used to characterize clay, WTS and clay-WTS bricks.  The performance of the bricks were evaluated with firing shrinkage, loss on ignition (LOI), water absorption, bulk density, and compressive strength tests. Increasing the sludge content results in a decrease of brick firing shrinkage, and increase of water absorption and compressive strength. The results revealed that the brick with 100% by weight of sludge could generate the highest compressive strength of 17.123N/mm2. It can be concluded that the bricks with 20 to 100% of water treatment sludge comply with the Malaysian Standard MS7.6:1972, which can fulfill the general requirement for usage of clay bricks in wall construction.

scholarly journals Ion-exchange for trihalomethane control in potable water treatment – a municipal water treatment case study in Rainy River, Ontario, Canada

2018 ◽  
Vol 54 (2) ◽  
pp. 142-160 ◽  
Author(s):  
Kenneth Brezinski ◽  
Beata Gorczyca ◽  
Mehrnaz Sadrnourmohammadi
Keyword(s):  
Water Treatment ◽  
Ion Exchange ◽  
Potable Water ◽  
Fixed Bed ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Quality Standard ◽  
Trihalomethane Formation Potential ◽  
Potable Water Treatment

Abstract The objectives of this study were to investigate the ability for ion-exchange (IX) to control trihalomethane (THM) formation, and to act as a potential treatment addition (upgrade) to a conventional treatment plant in Rainy River Ontario, Canada. The primary goal was to investigate the total organic carbon (TOC) and trihalomethane formation potential (THMFP) removal as a function of resin dose; and note the relative improvements over current conventional plant operation. IX resin (DOWEX TAN-1, Purolite 502P and 860, and Amberlite PWA9) removed 68–72% of TOC and 30–40% THMFP from the conventionally filtered water. Fixed-bed fluidized bed contactor was used to investigate the TOC/THMFP breakthrough for the DOWEX TAN-1 resin. Complete resin breakthrough occurred followed by 1,275 and 1,075 bed volumes for TOC and THMFP, respectively. Breakthrough output following 1,000 treated bed volumes was noted as the point at which THMFP levels reach the 0.1 mg L–1 water quality standard threshold required by Canadian regulators. High exchange capacities were recorded for the TAN-1 (3.02 mg mL–1) and PWA9 (2.03 mg mL–1) resins – both of which contain styrene backbones. The results produced in the bench-scale experiments were used very successfully in a full-scale upgrade of the Rainy River water treatment plant.

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