A Coupling Process of Precoating Dynamic Membrane with Photocatalysis for Treatment of Oily Wastewater

2014 ◽  
Vol 1004-1005 ◽  
pp. 957-961
Author(s):  
Hai Chen ◽  
Tao Yang ◽  
Guo Chao Li ◽  
Ke Cheng Hu
Keyword(s):  
Wastewater Treatment ◽  
Ultraviolet Light ◽  
Membrane Fouling ◽  
Light Power ◽  
Dynamic Membrane ◽  
Coupling Process ◽  
Oil Retention ◽  
Ph Values ◽  
Emulsified Oil ◽  
Oil Wastewater

In order to improve the steady permeate fluxes during the emulsified oil wastewater treatment using precoated dynamic membrane, a coupling process of precoating dynamic membrane with ultraviolet photocatalysis was studied. Impacts of the ultraviolet light power, pH values and the oil concentrations on improvement of the steady permeate fluxes were investigated. The results showed that the ultraviolet photocatalysis effectively improved the steady permeate fluxes and reduced the membrane fouling resistances during the emulsified oil wastewater treatment. The dynamic membrane steady membrane fluxes increased with the rise of ultraviolet light power and decrease in liquid pH values and oil concentrations. Impact of the ultraviolet photocatalysis on the oil retention ratio of precoating dynamic membrane was not obvious.

Performance of SIDMBR for Emulsified Oil Wastewater Treatment

2013 ◽  
Vol 448-453 ◽  
pp. 478-481
Author(s):  
Zhi Yong Han ◽  
Si Su ◽  
Yan Lu ◽  
Wang Bing Du
Keyword(s):  
Wastewater Treatment ◽  
Membrane Fouling ◽  
Extracellular Polymeric Substances ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Ammonia Nitrogen ◽  
Dynamic Membrane ◽  
Emulsified Oil ◽  
Membrane Flux ◽  
Oil Wastewater

The Sequencing Inclined Dynamic Membrane Biological Reactor (SIDMBR) was investigated on a pilot scale for 60 days of emulsified oil wastewater treatment at zero excess sludge discharge. Results indicate that at hydraulic retention time of 24 h, the average removals of chemical oxygen demand (COD), ammonia nitrogen and oil are 66.83, 64.2 and 70.8% in 1~60 days, respectively. The membrane flux, biofilm quantity, and extracellular polymeric substances (EPS) content begin to change after 20th, which indicate that membrane fouling has occurred.

Investigation of Emulsified Oil Wastewater Treatment with Polymers

1997 ◽  
Vol 32 (13) ◽  
pp. 2173-2187 ◽  
Author(s):  
X. Zhu ◽  
B. E. Reed ◽  
W. Lin ◽  
P. E. Carriere ◽  
G. Roark
Keyword(s):  
Wastewater Treatment ◽  
Emulsified Oil ◽  
Oil Wastewater

scholarly journals Influence of Material on Membrane Fouling and Cleaning Results of Mustard Tuber Wastewater Treatment by Membrane Bioreactor

2014 ◽  
Vol 26 (11) ◽  
pp. 3246-3248
Author(s):  
Hongxiang Chai ◽  
Luwei Guo ◽  
Yinghua Wei ◽  
Jun Du ◽  
Jian Zhou ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Fouling ◽  
Membrane Bioreactor

Synthesis and application of polyacrylamide grafted magnetic cellulose flocculant for palm oil wastewater treatment

2020 ◽  
Vol 8 (4) ◽  
pp. 104014 ◽  
Author(s):  
Mohamed Hizam Mohamed Noor ◽  
Norzita Ngadi ◽  
Ibrahim Mohammed Inuwa ◽  
Lawal Anako Opotu ◽  
Mohd Ghazali Mohd Nawawi
Keyword(s):  
Wastewater Treatment ◽  
Palm Oil ◽  
Oil Wastewater

scholarly journals Motor oil wastewater treatment in a packed bed bioreactor using immobilized native microbial consortium

2021 ◽  
Vol 20 (2) ◽  
pp. 761-773
Author(s):  
E. Houbron ◽  
◽  
E. Cruz-Carmona ◽  
A. Ponciano-Rosas ◽  
E. Rustrián-Portilla ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Microbial Consortium ◽  
Packed Bed ◽  
Motor Oil ◽  
Packed Bed Bioreactor ◽  
Oil Wastewater

scholarly journals Preparation, characterization and dyeing wastewater treatment of a new PVDF/PMMA five-bore UF membrane with β-cyclodextrin and additive combinations

2021 ◽  
Author(s):  
Xiaozheng Bian ◽  
Jianping Huang ◽  
Lin Qiu ◽  
Chunyan Ma ◽  
Danli Xi
Keyword(s):  
Wastewater Treatment ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Membrane Fouling ◽  
Bovine Serum ◽  
Polyvinylidene Fluoride ◽  
Hollow Fiber Membrane ◽  
Pure Water ◽  
Water Flux ◽  
Dyeing Wastewater

Abstract A new type of polyvinylidene fluoride (PVDF)/polymethyl methacrylate (PMMA) hollow fiber membrane (HFM) with five bores was prepared. The effects of Polyvinylpyrrolidone (PVP), β-cyclodextrine (β-CD), Polyethylene Glycol (PEG) and Polysorbate 80 (Tween 80) and their combinations on the PVDF/PMMA five-bore HFMs were investigated. The performance and fouling characteristics of five-bore HFMs for dyeing wastewater treatment were evaluated. Results indicated that adding 5wt.% PVP could increase the porosity and water flux of the membrane but decrease the bovine serum albumin (BSA) rejection rate. Adding 5wt.% β-CD significantly improved the tensile and rejection of the HFMs without showing effect on the increase of water flux. The characteristic of the HFMs with different additives combinations proved that the mixture of 5wt.% PVP and 1wt.% β-CD obtained the best membrane performance, with a pure water flux of 427.9 L/ m2·h, a contact angle of 25°, and a rejection to bovine serum albumin (BSA) of 89.7%. The CODcr and UV254 removal rates of dyeing wastewater treatment were 61.10% and 50.41%, respectively. No breakage or leakage points were found after 120d operation showing the reliable mechanical properties. We set the operating flux to 55 L/m2·h and cross flow rate to 10% which can effectively control membrane fouling.

scholarly journals Direct Osmosis for Reverse Osmosis Fouling Control: Principles, Applications and Recent Developments

2009 ◽  
Vol 3 (1) ◽  
pp. 8-16 ◽  
Author(s):  
Jian-Jun Qin ◽  
Boris Liberman ◽  
Kiran A. Kekre ◽  
Ado Gossan
Keyword(s):  
Wastewater Treatment ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Chemical Potential ◽  
Water Desalination ◽  
Water And Wastewater Treatment ◽  
High Pressure Pump ◽  
Permeable Membrane ◽  
Fouling Control ◽  
Ro Membrane

Reverse osmosis (RO) has been widely applied in various water and wastewater treatment processes as a promising membrane technology. However, RO membrane fouling is a global issue, which limits it operating flux, decreases water production, increases power consumption and requires periodical membranes Cleaning-in-Place (CIP) procedure. This may result in low effectiveness, high cost and adds environmental issues related to the CIP solutions disposal. Forward osmosis (FO) or direct osmosis (DO) is the transport of water across a semi-permeable membrane from higher water chemical potential side to lower water chemical potential side, which phenomenon was observed in 1748. The engineered applications of FO/DO in membrane separation processes have been developed in food processing, wastewater treatment and seawater/brackish water desalination. In recent years, DO has been increasingly attractive for RO fouling control as it is highly efficient and environmentally friendly technique which is a new backwash technique via interval DO by intermittent injection of the high salinity solution without stoppage of high pressure pump or interruption of the operational process and allows keeping RO membrane continuously clean even in heavy bio-fouling conditions and operating RO membranes at high flux. This paper provides the state-of-the-art of the physical principles and applications of DO for RO fouling control as well as its strengths and limitations.

Effect of permeate flux and tangential flow on membrane fouling for wastewater treatment

2005 ◽  
Vol 45 (1) ◽  
pp. 68-78 ◽  
Author(s):  
H CHOI ◽  
K ZHANG ◽  
D DIONYSIOU ◽  
D OERTHER ◽  
G SORIAL
Keyword(s):  
Wastewater Treatment ◽  
Membrane Fouling ◽  
Permeate Flux ◽  
Tangential Flow
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