Small Sewage Treatment Plant

Small Sewage Treatment Plant Introduction

MBR is a new-type water treatment technology, integrated with membrane separation unit and biological treatment unit. Membrane modules are used instead of secondary sedimentation tank in the bioreactor to maintain high activated sludge concentration and reduce the land area of wastewater treatment facility and the sludge amount through maintaining low sludge load. The MBR membrane can completely block and retain the microorganisms in the bioreactor through its filtration function, which achieves the complete separation between the hydraulic retention time and activated sludge age, thus avoiding the sludge expansion problem of conventional activated sludge process. Compared with conventional biological water treatment technology, MBR technology has the following main characteristics including high treatment efficiency, good outlet water quality, compact equipment layout, small footprint, easy automatic control and easy operation management.

The MBR bioreactor is a suspended growth-activated sludge system that utilizes micro porous membranes for solid/liquid separation instead of secondary clarifiers. The system uses precision filter membranes having pore sizes of 0.1 µm. MBR treated water can be used for landscaping, toilet flushing, and a variety of other applications.

PTFE MBR flat sheet membrane

The principle of membrane filtration is based upon the separation of solids suspended in a watery solution by means of a pressure difference. While the water permeates through the membrane, the solids, bacteria and even most viruses are retained on the concentrate side on the membrane surface where they are removed by relative movement.
The MBR system is provided with multiple membrane elements in an integrated membrane module in 2 or 3 stages in an aerobic tank. The MBR systems utilize side-stream cross-flow membrane configuration. The wastewater is filtrated using suction filtration, and the filtered water becomes treated.

Air is supplied from the air diffuser installed on the bottom of the membrane module to prevent sludge from adhering to the membrane surface. Thus, the system can perform stable treatment without getting clogged.

System Process Flow Compared with CAS

Water Treatment Quality

Advantages of MBR
1) High efficiency in wastewater treatment

2) Excellent chemical stability
3) High intensity for backwash
4) Excellent anti-pollution

5) Stable effluent water quality
6) Simple replacemen and chemical cleaning
7) Possibility of direct water reuse

Applicable to sludge in various applications

1) Municipal water and sewage treatment plants

2) Agricultural/fishery community  sewage treatment plants 
3) Industrial  sewage treatment plants 
4) Food/beverage production plants
5) Dairy farming/Meat processing plants
6) Bread processing sewage treatment plants
7) Machinery manufacturing/Metal processing plants
8) Laundry sewage treatment plants 
9) Other sewage treatment plants (paper manufacturing, building material manufacturing, oilfield associated water accompanied with crude oil mining, etc. )

 Model (All customized models are available by online inquiry)

Company Introduction

Benenv Co., Ltd. is a company with over 40 years of experience in environmental technologies with headquarter in China and research center in Japan. “Benenv” is named after the spirit of “Benefit the environment”, meaning to develop and promote our environmental protective technologies and equipment, to make our contribution to a greener earth.

Benenv focuses on the design, engineering, supply and installation of domestic and commercial water, waste water and sewage treatment systems, and other environmental engineering. Our products line includes multi-disk screw press series, KDS dewatering series, electric osmosis equipment, sludge drying machine, sludge incinerator and membrane bio-reactor.

Equipped with manufacturing facility and experienced design and service team, Benenv is able to offer our customers integrated sludge &wastewater treatment solutions as design, equipment supply, constructions, and technology innovation. We are highly qualified of delivering turnkey and BOT projects of hazard wastewater treatment for any industry.

Company has got international qualifications as ISO9001 and CE, national awards as Utility Model Patentfor MDS series and dosing device, and High-tech Enterprises Qualification, etc.

Company is also working closely with top 10 universities and government organizations to keep our technology of cutting-edge and transform science and technology into productivity.