Pilot study for sewage wastewater reclamation and reuse using RO membrane: comparison of different pre-treatment systems

2014 ◽  
Vol 54 (4-5) ◽  
pp. 900-907 ◽  
Author(s):  
Chin Boon Ong ◽  
Abdul Wahab Mohammad ◽  
Siti Rozaimah Sheikh Abdullah ◽  
Hassimi Abu Hasan ◽  
Chai Hoon Koo
Keyword(s):  
Pilot Study ◽  
Wastewater Reclamation ◽  
Wastewater Reclamation And Reuse ◽  
Ro Membrane ◽  
Pre Treatment

Coagulation-adsorption-ultrafiltration for wastewater treatment and reuse

2003 ◽  
Vol 3 (5-6) ◽  
pp. 361-365 ◽  
Author(s):  
D. Abdessemed ◽  
G. Nezzal ◽  
R. Ben Aim
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Domestic Wastewater ◽  
Powdered Activated Carbon ◽  
Cod Removal ◽  
Wastewater Reclamation ◽  
Wastewater Reclamation And Reuse ◽  
Pre Treatment ◽  
Uf Membranes ◽  
Tubular Membranes

We considered the treatment of domestic wastewater by coagulation–adsorption–ultrafiltration, and a test of adsorption like pre-treatment to the membrane as an alternative for wastewater reclamation and reuse. The performances of two inorganic tubular membranes (M2 and M5 CARBOSEP with 15,000 Da and 10,000 Da MWCO) were studied. Powdered activated carbon was used as adsorbent agent and FeCl3 as a coagulant. Coupling adsorption and ultrafiltration resulted in satisfactory results: the efficiency of COD removal was increased by using PAC compared with results obtained when using only UF membranes.

Wastewater reclamation systems in small communities

2007 ◽  
Vol 55 (7) ◽  
pp. 149-154 ◽  
Author(s):  
L. Alcalde ◽  
M. Folch ◽  
J.C. Tapias ◽  
E. Huertas ◽  
A. Torrens ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Removal Rate ◽  
Low Cost ◽  
Small Scale ◽  
Wastewater Reclamation ◽  
Small Communities ◽  
Physico Chemical ◽  
Wastewater Reclamation And Reuse ◽  
Pre Treatment ◽  
Chlorine Dioxide Disinfection

The demands established in the rules and regulations by the administration in Catalonia seem to exclude small communities from wastewater reclamation and reuse, due to the comparatively high costs associated with the practice at small scale. In the framework of the DRAC project (Demonstration on Wastewater Reclamation and Reuse in Catalonia) two different pre-treatment systems, one extensive (infiltration–percolation) and another intensive (ring filter), each one followed by chlorine dioxide disinfection, were tested in order to be applied for small communities wastewater reclamation and reuse. The results of this study show that infiltration–percolation systems remove very efficiently physico-chemical contaminants and microorganisms. The ring filter system does not show a significant removal rate of contaminants. The use of infiltration–percolation as a pre-treatment for advanced chemical disinfection allows reducing the dose of disinfectant and the contact time needed to achieve a specific water quality, and diminishes disinfection by-products (DBPs) generation. Therefore, this reclamation line is suitable for small communities due to its efficiency and low cost. However, further studies are needed in relation to the removal mechanisms of microorganisms, organic compounds in IP systems and the possible DBPs formation using chlorine dioxide.

Performance Investigation of Pilot Study for Wastewater Reclamation Using Ferric Chloride as Coagulant

2013 ◽  
Vol 65 (4) ◽  
Author(s):  
Chin Boon Ong ◽  
Abdul Wahab Mohammad ◽  
Siti Rozaimah Sheikh Abdullah ◽  
Hassimi Abu Hasan
Keyword(s):  
Pilot Study ◽  
Ferric Chloride ◽  
Membrane Fouling ◽  
Treatment Plant ◽  
Effluent Treatment ◽  
System Stability ◽  
Wastewater Reclamation ◽  
Average Percentage ◽  
Pilot Unit ◽  
Ro Membrane

A pilot study was conducted to evaluate the efficiency of ferric chloride as coagulant agent on the long term performance to reverse osmosis membrane technology. The pilot unit comprised of 50m3/day pore controllable fiber (PCF) technology as a pre-treatment prior to RO for water reclamation from an effluent treatment plant based in Malaysia. The additions of ferric chloride ahead of PCF unit give high rejection of permeate quality after RO such as TSS, COD, alkalinity, and nitrite. However, there is deterioration of RO membrane performance after the pilot unit has been run continuously for 24 hours over 3 months. Average percentage reduction for parameters such as BOD5, COD, TDS, conductivity, and TSS for PCF-RO over 3 months operation is 51.12%, 70.01%, 68.36%, 68.39% and 69.17% respectively. Fouled RO membranes for both lines were analyzed using Fourier transform infrared (FTIR) spectroscopy and EDS coupled with scanning electron microscopy (SEM). EDS-SEM results showed that the foulants deposit on RO membrane for PCF-RO about 4.29-6.23µm and Fe element at 14.81% by the mean of weight. These imply that ferric chloride residual contribute to RO membrane fouling and thus affect the system stability and efficiency.

A pilot study for wastewater reclamation and reuse with MBR/RO and MF/RO systems

Desalination ◽  
2007 ◽  
Vol 202 (1-3) ◽  
pp. 106-113 ◽  
Author(s):  
L.S. Tam ◽  
T.W. Tang ◽  
G.N. Lau ◽  
K.R. Sharma ◽  
G.H. Chen
Keyword(s):  
Pilot Study ◽  
Wastewater Reclamation ◽  
Wastewater Reclamation And Reuse

Evaluation of the California Wastewater Reclamation Criteria Using Enteric Virus Monitoring Data

1992 ◽  
Vol 26 (7-8) ◽  
pp. 1513-1524 ◽  
Author(s):  
T. Asano ◽  
L. Y. C. Leong ◽  
M. G. Rigby ◽  
R. H. Sakaji
Keyword(s):  
Municipal Wastewater ◽  
Enteric Virus ◽  
Monitoring Data ◽  
Municipal Wastewater Treatment ◽  
Wastewater Reclamation ◽  
Food Crop ◽  
Reclaimed Wastewater ◽  
Ground Water Recharge ◽  
Wastewater Reclamation And Reuse ◽  
Crop Irrigation

The State of California's WastewaterReclamationCriteria is under review and will be revised and expanded to include several new regulations on the use of reclaimed municipal wastewater. To provide a scientific basis for the evaluation of the existing and proposed Criteria, enteric virus monitoring data from secondary and tertiary effluents were evaluated. These virus data were obtained from special studies and monitoring reports, covering the period from 1975 to 1989, including ten municipal wastewater treatment facilities in California. Based on the enteric virus data from these reports, and using the current Criteria as a guide, four exposure scenarios were developed to determine the risk of waterborne enteric virus infection to humans as a consequence of wastewater reclamation and reuse. The exposure assessments included food crop irrigation, landscape irrigation for golf courses, recreational impoundments, and ground water recharge. The virus enumeration and the resulting risk assessments described in this paper provide a comparative basis for addressing the treatment and fate of enteric viruses in wastewater reclamation and reuse. The analyses show that annual risk of infection from exposure to chlorinated tertiary effluent containing 1 viral unit/100 L in recreational activities such as swimming or golfing is in the range of 10−2 to 10−7, while exposures resulting from food-crop irrigation or groundwater recharge with reclaimed municipal wastewater is in the range of 10−6 to 10−11. The risk analyses are also used to demonstrate that the probability of infection can be further mitigated by controlling exposure to reclaimed wastewater in the use area.

Technical-economic modelling of integrated water management: wastewater reuse in a French island

2001 ◽  
Vol 43 (10) ◽  
pp. 67-74 ◽  
Author(s):  
P. Xu ◽  
F. Valette ◽  
F. Brissaud ◽  
A. Fazio ◽  
V. Lazarova
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Potable Water ◽  
Public Attitudes ◽  
Wastewater Reuse ◽  
Cost Effective ◽  
Economic Modelling ◽  
Wastewater Reclamation ◽  
Management Scenarios ◽  
Wastewater Reclamation And Reuse

An integrated technical-economic model is used to address water management issues in the French island of Noirmoutier. The model simulates potable water production and supply, potable and non potable water demand and consumption, wastewater collection, treatment and disposal, water storage, transportation and reuse. A variety of water management scenarios is assessed through technical, economic and environmental evaluation. The scenarios include wastewater reclamation and reuse for agricultural and landscape irrigation as well as domestic non potable application, desalination of seawater and brackish groundwater for potable water supply. The study shows that, in Noirmoutier, wastewater reclamation and reuse for crop irrigation is the most cost-effective solution to the lack of water resources and the protection of sensitive environment. Some water management projects which are regarded as having less economic benefit in the short-term may become competitive in the future, as a result of tightened environmental policy, changed public attitudes and advanced water treatment technologies. The model provides an appropriate tool for water resources planning and management.

Ultrafiltration combined with ozone for domestic laundry wastewater reclamation and reuse

2001 ◽  
Vol 1 (5-6) ◽  
pp. 387-392 ◽  
Author(s):  
G.T. Seo ◽  
T.S. Lee ◽  
B.H. Moon ◽  
J.H. Lim
Keyword(s):  
Reclaimed Water ◽  
Cross Flow ◽  
Wastewater Reclamation ◽  
Cross Flow Filtration ◽  
Wastewater Reclamation And Reuse ◽  
Filtration Area ◽  
Injection Interval ◽  
Flow Filtration ◽  
Two Phases ◽  
Ozone Injection

Ozone was incorporated into an ultrafiltration system to produce higher quality reclaimed water from domestic laundry wastewater. Characteristics of the wastewater for initial washing waste were 488~2,847 mg/L COD, 62~674 mg/L MBAS, and 38~857 mg/L SS. The wastewater was contacted with ozone in a 10L storage tank and circulated through the membrane module for inner pressurized cross-flow filtration. The concentrate was returned back to the contact tank. The membrane used in this experiment was hollow fiber polysulfone UF membrane with MWCO 5,000 and 10,000. It has an effective filtration area of 0.06m2. The experiment was carried out in two phases with either continuous or intermittent ozone injection. For intermittent ozone injection, the mode of injection interval was changed to 5 min./5 min. and 5 min./10 min. for injection/idling. Ozone was dosed at the concentration of 1.5 mg/L. The permeate quality of UF (MWCO 5,000) was 57 mg/L as COD and 5 mg/L as MBAS at continuous ozone injection with removal of 95% in COD and 96.9% in MBAS. Using UF with MWCO 10,000, it was 93.7% and 95.5% of COD and MBAS, respectively. And using intermittent ozone injection, the removal efficiency was 93% in COD and 93.5% in MBAS without any deterioration in COD and MBAS removal. It could reduce the treatment cost. Using ozone injection, fouling of the membrane was also controlled by increasing organic degradation. The flux of UF (MWCO 5,000 and 10,000) was 0.13 and 0.20 m/d for 3 hour filtration (TMP 40≈45 kPa) without ozone injection. It was increased to 0.18 and 0.24m/d by ozone injection. The reclaimed water quality could be estimated well enough to reuse for rinsing purposes.

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