MBR Membrane Elements for Wastewater Treatment with PVDF material

MBR Introduction

A Membrane bioreactor (MBR) processes are mainly used for wastewater treatment (WWT) by using microfiltration (MF) or ultrafiltration (UF) and integrating them with a biological process like a suspended growth bioreactor. The membranes are employed as a filter removing the solids which are developed during the biological process, which gives a clear and pathogen free product.

It's generally acknowledged that membrane bioreactors have a number of advantages over other wastewater technologies,

• I. Independent control of HRT and SRT
• II. High quality effluent
• III. Small footprint
• IV. Improved bio-treatment.
• V. Independent control of HRT and SRT
• VI. MBR OPEX

I. Independent control of HRT and SRT

As the biological solids (mixed liquor or sludge) are completely contained in the bioreactor, this allows for the solids retention time (SRT) to be controlled independently from the hydraulic retention time (HRT). In the CAS process, the flocculant solids (‘flocs’) that are essentially the biomass have to be allowed to grow in size to the point where they can be settled out in the secondary clarifier. So in CAS the HRT and SRT are connected; as the HRT increases, the flocs have to grow which then increases their settleability.

3. Technical Parameter of Membrane Module

II. High quality effluent

With the membrane pores of the MBR being of a small size (<0.5), the treated effluent has a very high clarity and significantly reduced pathogen concentration compared with the CAS process. The effluent has enough high quality to be discharged to water bodies or to be used for such applications as urban irrigation, utilities or toilet flushing. It can also be fed directly to a reverse osmosis process in order to get a permeate of even higher water quality.

III. Small footprint

CAS has a high HRT which leads to a larger plant size required. In MBRs, due to higher concentrations obtained, the same total mass of solids is contained in a smaller volume, so the footprint is smaller.

IV. Better bio-treatment

MBRs have higher SRT which tends to provide better overall bio-treatment due to encouraging the development of the slower-growing micro-organisms, specifically nitrifiers. This fact makes MBRs very effective at the biological removal of ammonia (‘nitrification’).

V. What are the disadvantages of MBRs?

The key disadvantages of an MBR are the operational process complexity and the cost which is translated to CAPEX and OPEX.

Both of the latter are highly sensitive to the cost of the membrane. The OPEX is additionally sensitive to,

• the membrane life
• permeate flux
• the membrane air scour rate (air scour energy)

2. Typical parameters of MBR units.

4.. Structure of Membrane Modules and Frames:

A. Structure of MBR Modules

B.Structure of MBR Frames

5. Product Features

-- All the frames are made of SS 304 or SS 316 stainess steel with reliable frames.

-- Every modules can be pulled out or putted in very conveniently for they are installed into UPVC Groove from top to bottom.

-- Every modules have flexible tubes connecting to collecting pipes.

-- Every modules have independent air blowing tube. There are additional air-blowing tube at the bottom of the frames.

-- All the modules have an added patented design air blowing tube to enhance the efficiency of the air blowing onto the membrane surface.

-- Permanent Hydrobility Membrane

-- Strong strength, the broken strength more than 50MPa

6. Application of MBR Units:

The whole installation and application process of our MBR modules are described as the following photo:

A. MBR unit of KH-MBRMD-8×8-CO-PVDF with total membrane area of 64 m2/unit.

B. MBR unit of KH-MBRMD-15×60-CO-PVDF with total membrane area of 840 m2/unit.

Why Choose US?

1). Over 20 years experience in UF and MBR membrane
2). Excellent cooperation partner
3). Own an excellent technical team
4). Advanced R & D capability
5). International management system(ISO9001)
6). Located in Jiangsu, convenient for export transportation.

Our Service

1). MBR membrane technical consulting,
2). MBR membrane application engineering design,
3). MBR system manufacturing, installation and commissioning,
4). Different membrane dimension, material like PP, PVDF etc.,can be customize according to your requirements
5). 12 months warranty

We,Hangzhou Kaihong Membrane Technology Co.,Ltd, is established on the year of 2003. We specializes in manufacturing UF and MBR membrane modules. We own more than 20 years of experience for the applying of UF and MBR membrane modules. Our products have been used in more than 1000 water treatment plants. We also have more than 2000 customers all over the world.

We have R&D team to develop new products and new separating technology for ourselves. We also have quality controlling system to ensure our products. At present our main products are made of PSF/PP/PVDF. We have hollow fiber membranes and flat sheet membranes for MBR systems. So we can meet different requirements for wastewater treatment and water purification.