Comparisons of coagulation efficiency of conventional aluminium sulfate and enhanced composite aluminium sulfate/polydimethyldiallylammonium chloride coagulants coupled with rapid sand filtration

2021 ◽  
Vol 44 ◽  
pp. 102322
Author(s):  
Ismaeel O. Adebayo ◽  
Olubunmi O. Olukowi ◽  
Zhou Zhiyuan ◽  
Yuejun Zhang
Keyword(s):  
Sand Filtration ◽  
Aluminium Sulfate ◽  
Rapid Sand Filtration

Removal of Nematodes by Rapid Sand Filtration

1969 ◽  
Vol 95 (1) ◽  
pp. 1-16
Author(s):  
Irvine Wen-Tung Wei ◽  
R. S. Engelbrecht ◽  
John H. Austin
Keyword(s):  
Sand Filtration ◽  
Rapid Sand Filtration

Iron and manganese removal by a membrane filtration system

2001 ◽  
Vol 1 (5-6) ◽  
pp. 357-364 ◽  
Author(s):  
Y. Jimbo ◽  
K. Goto
Keyword(s):  
Membrane Filtration ◽  
Manganese Concentration ◽  
Sand Filtration ◽  
Design Standards ◽  
Manganese Removal ◽  
Filtration System ◽  
Small Capacity ◽  
Rapid Sand Filtration ◽  
Removal System ◽  
Iron And Manganese

The design standards of the iron and manganese removal system by membrane filtration were investigated. The membrane filtration after pre-chlorination could remove iron completely and could remove around 70% of manganese. In the case of manganese concentration being more than 0.05 mg/l, the membrane filtration could remove them completely after the deposition in the oxidation tank. The concentrations of iron and manganese were reduced more than 90% by the oxidation tank and were reduced until under the detection limit after the membrane filtration. The economic comparisons between the rapid sand filtration system and this membrane filtration system in a small capacity and a middle capacity were investigated. The 15 years total costs of the membrane filtration system were estimated to be smaller than or around equal to the rapid sand filtration system in both capacities.

Nematode Removal by Rapid Sand Filtration

1968 ◽  
Vol 60 (8) ◽  
pp. 962-968 ◽  
Author(s):  
A. K. Seth ◽  
M. G. George ◽  
J. K. Bewtra ◽  
V. P. Sharma
Keyword(s):  
Sand Filtration ◽  
Rapid Sand Filtration

scholarly journals National survey of utilization of continuous water quality monitors in water supply systems in Japan

2019 ◽  
Vol 19 (5) ◽  
pp. 1347-1353 ◽  
Author(s):  
K. Kosaka ◽  
Y. Koike ◽  
Y. Miyabayashi ◽  
K. Saito ◽  
M. Asami ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Purification ◽  
Water Quality Management ◽  
High Sensitivity ◽  
Water Supply Systems ◽  
Sand Filtration ◽  
Water Safety ◽  
Critical Control Points ◽  
Water Safety Plans ◽  
Rapid Sand Filtration

Abstract An investigation of the utilization of water quality monitors at water purification plants throughout Japan was conducted via questionnaire from August to October 2015. The number of types of monitors installed at more than one water purification plant was 34. Chlorine, high sensitivity turbidity, pH, and turbidity monitors were (highly) recommended for installation in four water purification processes (rapid sand filtration, chlorination only, slow sand filtration and membrane treatment), except for high sensitivity turbidity of chlorination only. The number of installations of the monitors recommended and their installation points were dependent upon the processes. Highly recommended points of turbidity were raw water and sedimentation points, which were set for (critical) control points in water safety plans. That of high sensitivity turbidity was the rapid sand filtration point for confirmation of Cryptosporidium control. Chlorine monitors were applied for automatic control, regardless of the water purification processes. Some interesting monitors, such as those for musty odor compounds and trihalomethane, were newly developed and utilized. The results of this study showed that water quality monitors were important for water quality management systems based on water safety plans in Japan.

Sign in / Sign up

Export Citation Format

Share Document