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Reinforced Pvdf Membrane Bioreactor For Wastewater Treatment

Membrane filtration has a major role in water and wastewater treatment, which is superior to the conventional water technologies with a proven better performance and more efficient economics. JX Purification can supply you MBR membranes and modules.
  • JXMBR-001

  • JX

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MBR Working Principle

Membrane filtration has a major role in water and wastewater treatment, which is superior to the conventional water technologies with a proven better performance and more efficient economics.

The basic membrane processes are microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO).

Separation ranges for those membranes are as follows: 100 to 1000 nm for MF, 5 to 100 nm for UF, 1 to 5 nm for NF, and 0.1 to 1 nm for RO.

For more than the last 10 years MBRs have emerged as an effective secondary treatment technology by using membranes in the range of MF and UF.

MBR Working Principle
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. A visual example can be found from the following picture of an immersed MBR (iMBR) in Figure 2.

MBR Working Principle
Fig.2 The wastewater goes through a fine screen for the removal of big objects that might cause damage to the downstream equipment. Then it enters an Anoxic Zone for the treatment of nitrogenous matter and phosphate following an Aerobic Zone where microorganisms with the help of the oxygen coming out of the FBD will digest the organics matter in the wastewater and clump together as they do so, producing a sludge. This sludge will enter the Immersed Membrane Bioreactor where the membrane will separate  the solids and microorganisms from water.

A membrane bioreactor is essentially a replacement in the conventional activated sludge (CAS) system for the settlement tank for solid/liquid separation. The MBR gives to the end user improved process control and much better product water quality.

The MBR process operates over a considerably different range of parameters than the conventional activated sludge process

· SRT 5 -20 days for conventional system - 20 -30 days for MBR

· F/M 0.05 -1.5 d-1for conventional system - < 0.1 d-1for MBR

In general MBRs have three distinct membrane configurations (Fig.3),

1. Hollow fibre (HF)

2. Multitube (MT)

3. Flat sheet (FS)

membrane configurations



Normally, we have three normal specifications 10,15,20. And we still can make customsized such as 25 or 35.

PVDF Membrane Specifications:

Regular model

Fiber diameter inside and outsidemm

Dimensions

a×bmm

Membrane area(㎡)

Water yieldt/d

Effluent turbidity NTU

Effluent suspended solids SS

Specification of connecting pipe

JX-MBR-1

0.8/1.9

630*1000

10

2.4-3.6

<0.3

≈0

32

1.0/2.2

JX-MBR-2

1.5/2.6

630*1500

15

3-5

< 0.3

≈0

32

JX-MBR-3

1.5/2.6

630*1960

20

5-8

< 0.3

≈0

32

JX-MBR-4

1.5/2,6

1300*1250*30

25/35

6-14

< 0.3

≈0

/


Parameters:

Appearance

Hollow fiber

Dimensions(mm)

630*1000

630*1500

630*1960

Membrane material

PVDF

Effective membrane area(㎡)

10

15

20

Design fluxm³/0.1MPa·25℃

10-40L/㎡/H

Filter type

Immersion suction filtration

Component connection mode

Plug in

Type of nozzle

/

Connecting pipeΦ

32

Packaging material of membrane module

Plastic and Wooden Case

Service temperature

5-50℃

Operating pressure

≤0.3MPa

PH range

1-14

Molecular weight cut off(Dal)

67000-100000

Membrane material

Hydrophilicity PVDF(PETlining)

Membrane pore size

0.1um/0.04um

porosity

>70%

Initial water yield

>300L/㎡·h

Design flux

10-40L/㎡·h

PH range

2-11

Operating temperature range

5-40℃

Aeration rate

Gas water ratio15:1-20:1


Product Advantages

图片4


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

    I. Independent control of HRT(hydraulic retention time)and SRT( solids retention time)

    II. High quality effluent

    III. Small footprint

    IV. Improved bio-treatment

    V. Independent control of HRT and SRT

    VI. MBR OPEX




MBR Applications

When MBR is your first choice ?

1. Limited space or you want to use space efficiently.

2. End user requires high quality treated water(e.g. for water reuse)


Although the MBR global market is mainly dominated by a few major companies, the number of technology suppliers continues to grow, with over 70 MBR membrane module products available on the market today.


In general MBRs have been applied to treat effluent in a number of industrial sectors, like:

1.food and beverage − high in organic loading

2.petroleum industry − exploration, refining and petrochemical sectors

3.pharmaceutical  industry – have active pharmaceutical ingredients (APIs)

4.pulp and paper industry − high levels of suspended solids, COD and BOD

5.textile industry effluent − re-biodegradability, toxicity, FOG content and color

6.landfill leachate − wide variety of dissolved and suspended organic and inorganic compounds

7.ship effluents − legislative requirements and space restrictions.

8.Industrial versus municipal treatment


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