The DMT MemBioRex®
Due to the serious pollution and the shortage of water, the treatment and reutilization of wastewater is one of the hottest issues all around the world. On one hand, all the governments and authorities continuously tighten the criteria of the discharge level and give all kinds of incentives to prompt the development of new technology. In another hand, all the companies and industries would like to use the better technology and reuse the wastewater to obtain both the economical and the environmental benefits.
Base on the global situation, DMT has gained and developed through the years a lot of know-how, experiences and references for cleaning of municipal and industrial wastewater with Membrane Bioreactors system (MBR)-DMT MemBioRex®.
The DMT MemBioRex® composes three stages, the physical stage, the biological stage and the separation stage. The physical stage fulfils the tasks of removing the grits and homogeneous the wastewater quality. And the biological stage- bioreactor will oxidize and remove most of the biodegradable materials and certain parts of the nonbiodegradable in the wastewater by the actived sludge with the present of oxygen in the reactor. While then nitrification, denitrification and dephophorization could be achieved with the anaerobic and anoxic situations. The last but not least, the separation stage-Ultrafiltration membranes will separate the effluent from the mixed liquor suspended solids and the mixed liquor suspended will be circulated back to the bioreactor. This results in excellent and stable effluent qualities, much better than the conventional actived sludge system.
Ultrafiltration Membrane Unit:
• Compact system
• High mixed liquor suspended solids (MLSS), up to 20,000mg/L
• Excellent anti-fouling due to the high flux membranes
• Cleaning –in- please backwash system
• Chemical enhanced backwash (low operating pressure, full automated, low cost of chemicals)
• High resistance modules to the temperature, pressure, and chemical materials
• Low energy consumption
With the Ultrafiltration Membrane Unit, the effluent will be free of suspended solids, bacteria, and virus. The normal effluent result is given in the following table:
| Parameter |
Result
(effluent from the UF membrane unit)
|
Unit |
| BOD |
< 5 |
mg/L |
| TSS |
< 0.5 |
mg/L |
| NH3-N |
< 0.5 |
mg/L |
| TN |
< 5 |
mg/L |
| TP |
< 0.05 |
mg/L |
| Turbidity |
< 0.2 |
NTU |
| Fecal Coliform |
< 10 |
CFU/100 ml |
| Transmisivity |
> 75 |
% |
*with appropriate biological design and/or chemical addition
As showed in the table, the result satisfies not only the critical discharge level, but also the reuse demands. In certain cases, another NF membrane unit could be added to the system to achieve more critical requirement.
Advantages of the DMT MemBioRex®:
• Excellent and stable effluent result
• Less sludge to be taken over
• Flexible design for different process and requirement
• Excellent control systems for different demands, guarantees the high performance of the system
and minimized the cost of maintenance and operation
• Low energy consumption
• Compact design of bioreactor and membrane units
• Usage of simple, reliable and easy
• Small footprint
• Standardized design resulting in low investment costs
Application:
• Municipal wastewater treatment
• Industry wastewater treatment (Typical application)
- -Food industry
- -Beer /beverage industry
- -leachate treatment
- -Tank cleaning industry etc.
Testing with pilot units can be performed by DMT in order to find the best suitable and economic attractive solution for every single case.
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