domestic sewage water MBR recycling purification system
USD $5,230 - $6,250 /Set
Min.Order:1 Set
Qingdao Yimei Environment Project Co., Ltd.
MBR Introduction
Membrane bio-reactor is a kind of new type sewage treatment technique which combine high efficient membrane separation technique and activated sludge manner, it inherit membrane separation technique and biochemical treatment technique feature and intensify biochemical treatment effect, it can used in high organic content municipal or industrial sewage treatment.
2.1 Compare to traditional activated sludge, MBR has the following advantage:
1) 0.05 micro membrane filtering outlet water, the effluent water suspended solid and turbidity can close to zero, can be reuse directly
2) Compare to traditional treatment system, it can save 50% land usable area;
3) Due to membrane high efficient intercept action, micro organism fully intercept in reactor , realize reactor hydraulic retention time and sludge age fully separation, to make operation control more flexible and steady;
4) The micro-organism concentration in bio-reactor can reach 5000-8000 mg/L, with high biochemistry efficiency, strong impact resistance;
5) Long sludge age, in favor of slowly accretion nitrobacteria Intercepting growth and breed, system nitration efficiency increase;
6) Reactor is operate in high volume loading,low sludge loading,long sludge age condition , surplus sludge discharge volume.
7) Membrane separation to make the big molecule difficult degrade into bioreactor has enough retention time, greatly improve difficult organism degrade efficiency;
8) System with high automation degree, adopt PLC control, can realize whole automatic control;
9) Modular design, compact structure, small occupy area ,low operation cost
After many years of sewage treatment project experience, start MBR sewage treatment technique has the following feature:
1) Membrane material is polyvinylidene fluoride, strong stain resistance, easy to washing, suitable for sewage treatment; chemical properties stable, strong oxidation resistance, it can adopt common oxidability agentia washing.
2) Membrane flux higher than other material (such as PP or PE) similar product, adopt periodically,chemical backwashing and chemical washing process guarantee membrane module water output ability and membrane flux.
3) Low trans-membrane pressure, usually is 0.01~0.06 Mpa, it can adopt siphon principle and no need suction power can output water, low operation cost.
4) MBR technology adopt anoxia and aerobic combining form, sewage enter into anoxia zone, make the big molecular weight long chain organism resolve into easy biological organism, then enter into aerobic area to make organism biological degrade , at the same time, to make biology nitration reaction, and make denitrification reaction, and by backflow to anoxia area to make denitrification, finish denitrification function.
2.2 MBR process description
MBR is a kind of new type sewage treatment technique which combine activated sludge manner and integrated immersed membrane separation system, this process can be widely used in municipal and industrial sewage treatment area, which contain water resource reuse,community development, park scenic water source reuse etc.
It is a new kind of sewage treatment technique, MBR has widely apply in all over the world sewage treatment plant.
Typical MBR system process can be described as following:
The sewage enter into equalize tank pass by 1-2mm bar screen, used to equalize water quality and volume. The intercept impurity need clear up in regular. Next, the sewage in equalize tank will pump to MBR system, in MBR system realize mirco-organism resolve reduction ,which contain aerobic and anoxia reaction area, the can’t degrade impurity and activated sludge will intercept in the membrane tank , the membrane filtering output water will reach standard reuse or discharge.
2.2.1Membrane module description
MBR system use hollow fiber membrane to make solid-liquid separation. The NL series immersed hollow fiber membrane is special developed membrane module. It has higher filtering efficiency, it can effective remove bacteria,suspended particles and impurity, thus get the superior filtering water. In additional, due to each unit membrane module filtering area big, small membrane installation occupy volume, decrease reactor volume and occupy area.
2.2.2Application scope:
Hotel,restaurant,community etc domestic sewage treatment recycle
Industrial and mining enterprises,remote village,sentry ,tourist area etc domestic sewage recycle.
Each kind of industrial sewage (similar to domestic sewage) :such as hospital sewage,pharmaceutical sewage ,washing sewage,food sewage etc
2.3 Influent and effluent water quality
Item | Influent water quality | Effluent water quality |
BOD5(mg/L) | 150-300 | ≤5-10 |
CODcr(mg/L) | 200-600 | ≤20-30 |
SS(mg/L) | 200-300 | ≤15 |
PH | 7-8 | 6~9 |
Ammpnia nitrogen | 50 mg/l | 20mg/l |
Oil grease | 30-40 mg/l | no |