PE08 100% Virgin HDPE MBBR Filter Media In White For
Wastewater Treatment
Product Description
Fluidized bed packing, also known as MBBR packing, is a new type of
bioactive carrier. It adopts scientific formula, according to
different water quality requirements, integrates different kinds of
Microelements in polymer materials, which are conducive to the
rapid growth of microorganisms. After special process modification
and construction, it has the advantages of large specific surface
area, good hydrophilicity, good fluidity, high biological activity,
easy to hang membrane, good treatment effect, long service life and
so on.
Principle of action of fluidized bed packing when sewage passes
through the fluidized bed packing reactor, microorganisms in the
water continuously adhere to and grow on the inner and outer
surfaces of the fluidized bed packing to form a biofilm. The fluid
bed packing rotates freely under the agitation of the mixed liquid
in the reactor. The biofilm fully contacts and decomposes the
pollutants in the water body, so that the water quality can be
purified. The turnover of mixed liquid and the movement of carrier
are realized by aerobic aeration or anaerobic agitation.
Technology Parameter
Type | Hole number | Density | Packing numbers | Menbrane-forming time | BOD5 Oxidation efficiency | Applocable temperature |
PE08 | 8 | 1.02-1.05 | >2000000 | 3-15days | 2500-15000 | 5-60℃ |
Size | Effictive surface | Porosity | Dosing Rate | Nitrification efficiency | COD Oxidation efficiency | Life-span |
5*10mm | >3500 | >80 | 15%-70% | 500-1400 | 2500-20000 | >15years |
Process characteristics
1. Enhanced nitrogen and phosphorus removal
The sludge age separation of different functional microorganisms in
the same reactor can be realized by using the composite process of
activated sludge and suspended packing. Denitrifying bacteria
(nitrifying bacteria) are generally long sludge age bacteria, which
need a longer sludge age (15-25d); phosphorus removing bacteria
(phosphorus accumulating bacteria) are generally short sludge age
bacteria, which need a shorter sludge age (3-7d); the sludge age is
too long, which is easy to cause poor microbial activity, reduce
the treatment load, aging is difficult to gather and reduce the
sedimentation performance, etc. in fact, there is an irreconcilable
contradiction in the sludge age in the traditional denitrifying and
phosphorus removal process .
The composite process provides a carrier for the growth of
nitrifying bacteria, prolongs the sludge age and improves the
denitrification effect due to the addition of biological fillers;
at the same time, controlling the activated sludge system to a
short sludge age can enhance the phosphorus removal effect; the
sludge membrane fully fluidizes under the driving of aeration and
water flow, promotes the renewal of biological membrane, prevents
the sludge age from being too long and the sludge aging treatment
performance from declining; the water temperature in winter is low
and the activated sludge age is low When the sludge system is not
conducive to the growth of nitrifying bacteria, the abscission
biofilm can continuously inoculate the activated sludge and
maintain the nitrification performance of the system.
2. Strong impact load resistance and good treatment effect
The impact load mainly includes the impact of conventional
pollutant water quality, toxic pollutant water quality and water
quantity. In essence, it is the impact of the change of pollutant
quantity carried by microorganism per unit surface area on the
treatment effect in unit time. The sludge age in the packing area
of MBBR Process is long and the abundance of microbial population
is increased, which is beneficial to the treatment of refractory
organics.
Under the conditions of low temperature, high salt and low
substrate, MBBR has a long mud age and a partial aerobic and anoxic
microenvironment, which is conducive to the selection and
enrichment of microorganisms and the enrichment of domesticated
psychrophilic bacteria and high salt tolerant bacteria.
The mass transfer of biofilm is slower than that of activated
sludge, and the heat generated by biodegradation is also slowly
exchanged with water body. Improving the local environmental
temperature of microorganisms is conducive to the maintenance of
bacterial activity, which shows that MBBR still has a better
treatment effect under the conditions of low temperature, high salt
and low substrate.
3. The activated sludge is not easy to expand
The pure MBBR system is adopted, because it is a pure membrane
method, there is no sludge bulking problem; when the composite
process of activated sludge and suspended filler is adopted, due to
the high proportion of inorganic matter in the aged falling
biofilm, the density is large and easy to settle; and the
extracellular polymer of biofilm is more than that of activated
sludge, which has the contact flocculation effect, improves the
sludge aggregation performance and improves the sludge settling
performance.
The sludge yield of the biofilm process is only half of that of the
activated sludge process. MBBR Process can significantly reduce the
sludge yield, improve the sludge settling performance, easily
reduce the water content of sludge, and save the cost of sludge
disposal.
4. It is not easy to block and need no back washing
In the fixed bed process, there are many problems, such as uneven
water distribution, easy to produce and die area, additional energy
consumption and supporting facilities required for regular
backwashing, and reduction of nitrification performance caused by
red insects. Because the packing and water flow can be mixed in the
whole volume of the biological pool, the possibility of blockage of
the biological pool is fundamentally eliminated, and the pool
capacity is fully utilized without back washing.
5. Long service life of MBBR suspension packing system
The packing is wear-resistant and durable. The agitator adopts
banana type agitating blade, with soft outline and without damaging
the packing. The whole agitating and aeration system is easy to
maintain and manage. As the cutting effect of packing on air bubble
improves the oxygen transfer efficiency, perforated aeration can be
used to improve the safety of aeration system and prolong the
maintenance period.
6. Applicable to upgrading and three-dimensional capacity expansion
of sewage treatment plant
MBBR Process has high flexibility in operation, and can adopt
various tank types without affecting the treatment effect of the
process; at the same time, it can be very flexible to select
different specific surface area fillers and different filler
filling rates. When the water quality or quantity of influent water
changes in actual operation, only by increasing the filling rate of
filler, it can ensure that the original designed biological tank
capacity remains unchanged, achieve the purpose of physical
capacity expansion, and achieve the requirements of both efficient
treatment and long-term expansion of treatment scale without
increasing the tank capacity.