Flatbed MABR (membrane aeration bioreactor) oxygen permeation membrane

Abstract

The invention discloses a flatbed MABR (membrane aeration bioreactor) oxygen permeation membrane component which comprises an MABR diaphragm unit. An air output pipeline is fixed on the upper portionof the MABR diaphragm unit, an air inlet pipeline is arranged on the lower portion of the MABR diaphragm unit, the MABR diaphragm unit comprises two symmetrically arranged MABR diaphragms, a sealing air cavity is formed between the MABR diaphragms, each MABR diaphragm sequentially comprises a breathable membrane layer, an aerobiotic biological membrane layer, a facultative biological membrane layer and an anaerobic biological membrane layer from inside to outside, the air output pipeline is communicated with the upper portion of the sealing air cavity, the air inlet pipeline is communicated with the lower portion of the sealing air cavity and connected with an oxygen supply fan, and the air outlet pipeline is provided with an emptying valve. According to the flatbed MABR oxygen permeationmembrane, overall operating energy consumption is low, nitrification and denitrification are simultaneously implemented, a coordination function is enhanced, ammonia nitrogen and total nitrogen removing capacity is high, the occupied space of a system is less, bubbles are omitted when aeration operation is implemented, odor is low, noise is low, the MABR diaphragms cannot be blocked, maintenance is almost omitted, the problem of the excessive aeration is avoided, the system is simple in process, and automation is easily achieved.

Description

technical field [0001] The invention belongs to the technical field of MABR membranes, in particular to a flat-plate MABR oxygen-permeable membrane assembly. Background technique [0002] The traditional activated sludge method adopts the aeration disc or perforated aeration method, the gas needs to overcome the water pressure aeration, requires a high aeration wind pressure, the high-pressure fan has high energy consumption, and the noise is large; and most of the air is re-exposed to the air In the process, the oxygen utilization rate is very low and the overall energy consumption is high. [0003] The traditional contact oxidation method generally uses fixed packing or suspended packing, aeration is made at the bottom of the packing, the outermost layer of the packing is in contact with water, and the dissolved oxygen in the sewage is high in an aerated environment, aerobic bacteria grow outside the packing, and facultative bacteria grow inside. anoxic bacteria, etc. Th...

AI Technical Summary

Problems solved by technology

The nitrifying bacteria growing on the outermost layer of the filler need oxygen for nitrification reaction, and heterotrophic aerobic bacteria will form oxygen competition, which is not conducive to full nitrification and deammonization; while the internal denitrifying bacteria need carbon source for denitrification and denitrification, because the external carbon source is Heteroxia and aerobic bacteria are consumed, carbon sources cannot fully enter the internal anoxic area, denitrification is inhibited, and total nitrogen is difficult to degrade

[0004] The traditional aeration method, the fan noise is loud, the energy consumption is high, the oxygen utilization rate is low, and the aeration will produce bubbles and odor, which will affect the daily life of the surrounding residents or animals, and the odor is not environmentally friendly

In the traditional contact oxidation method, the air transfer direction is from the outermost layer of the filler biofilm to the innermost layer, and the mass transfer of carbon source organic matter is also from the outermost layer to the innermost layer. Because oxygen competition is not conducive to full nitrification, it is difficult for carbon source competition to transfer mass. To the inside, it cannot be denitrified, and the effluent will easily cause the total nitrogen to exceed the standard

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