scholarly journals Zero emission technology of excess sludge. Research on loss of sludge with chemicals cleaning of membrane separation equipment.

1999 ◽  
Vol 28 (8) ◽  
pp. 552-555
Author(s):  
Tatsuya UEJIMA
Keyword(s):  
Membrane Separation ◽  
Excess Sludge ◽  
Zero Emission ◽  
Separation Equipment

Separation of Activated Sludge with Sub-Mili Filtration

2013 ◽  
Vol 807-809 ◽  
pp. 1523-1526
Author(s):  
Yan Ping Cui ◽  
Bing Hua Yao
Keyword(s):  
Membrane Filtration ◽  
Suspended Solids ◽  
Membrane Separation ◽  
Cost Effective ◽  
Excess Sludge ◽  
Unit Operations ◽  
Secondary Clarifier ◽  
Gravity Sedimentation ◽  
Separation Media ◽  
Sludge Concentration

Separation is one of the most important unit operations in biological wastewater treatment. Two commonly employed methods are gravity sedimentation (e.g.secondary clarifier) and membrane filtration (e.g.membrane bioreactor, MBR). Their efficiency at sludge concentrations higher than 10g/L as mixed liquor suspended solids (MLSS) would not meet actual engineering needs any longer. It is of interest to develop a cost-effective process which might pave ways for controlled redistribution of sludge concentration and eventually for reduced excess sludge. This work is to introduce a sub-mili filter as separation media to obtain a target effluent of suspended solids (SS) less than 500mg/L at flux higher than 100L/m2·h and sludge concentration about 20g/L as MLSS. Results show desired effluent SS can be achieved as low as 5mg/L, indicating sub-mili filtration could be an effective supplement to membrane separation and gravity sedimentation for specific applications.

scholarly journals Zero emission technology of excess sludge. Research on the sludge disappearance type organism method (organism method by hydrothermal) using the hydrothermal reaction.

1999 ◽  
Vol 28 (8) ◽  
pp. 566-570 ◽  
Author(s):  
Sadaaki MURAKAMI ◽  
Minoru TANIGUCHI ◽  
Hideo SHIMIZU ◽  
Masami TAKEUCHI ◽  
Munetaka ISHIKAWA ◽  
...  
Keyword(s):  
Hydrothermal Reaction ◽  
Excess Sludge ◽  
Zero Emission
Sign in / Sign up

Export Citation Format

Share Document