CN200985298Y - Diaphragm aeration biologic suspending reactor - Google Patents

Abstract

The utility model discloses a membrane aeration biological suspension reactor which comprises a raw water pool, a water intake pump, a membrane biological reactor, a microprocessor, a backwash pump and a backwash channel and is characterized in that the raw water pool is connected with the membrane biological reactor by the water intake pump and a regulation valve; a flow baffle and a curtain membrane assembly are positioned at the middle of the membrane biological reactor the bottom of which is connected with a mesh baffle, an aeration pipe connected with the backwash pump and the backwash channel and a micropore aeration head; the top of the membrane biological reactor is connected with a water outlet pump and a blower. The utility model has the advantages as follows: First, an internal circulation is built to realize a cross flow of water vapor to lower a pollutant deposition on the membrane surface. Second, the additional suspension biological membrane bed can ease the membrane pollution. Third, two groups of membrane components perform alternate operation mode of water output and aeration to realize a purpose of both continuous operation and lowering membrane pollution. Fourth, a PLC automatic control system can make the operation much easier. Fifth, the backwash system containing a backwash pipeline positioned at the reactor bottom can perform a periodic hydraulic backwash to the packing.

Description

Film aeration biosuspension reactor

Technical field

The utility model relates to a kind of film aeration biosuspension reactor, the especially a kind of film aeration biosuspension reactor that can handle the low-carbon (LC) high ammonia-nitrogen wastewater.

Background technology

For traditional biological denitrogenation theory, the denitrogenation approach generally comprises two processes of nitrification and denitrification, nitrifying process is that ammonia is by the autotrophic type conversion of nitrite to nitrate, mainly finished by chemolithotrophic bacterium-nitrobacteria, denitrification process then is considered to be in to be finished under the strict anaerobic condition.People have found nitrite nitrogen cumulative phenomenon in the nitrifying process, and have proposed the notion of short-cut nitrification and denitrification biological denitrificaion in handling high ammonia-nitrogen wastewater.Though the system short-cut nitrification and denitrification of keeping can be saved 25% aeration rate theoretically in the nitrated stage, the denitrification stage can be saved 40% organic carbon source, but under low DO concentration, when if the ammonia nitrogen removal effect is relatively poor, also just can't realize effective removal of nitrogen, thereby also just can't bring into play the advantage of short-cut nitrification and denitrification.

Summary of the invention

The purpose of this utility model provides a kind of film aeration biosuspension reactor, handles the low-carbon (LC) high ammonia-nitrogen wastewater in conjunction with the advantage of short distance nitration and SND.

The utility model is achieved like this, it comprises former pond, intake pump, membrane bioreactor, microprocessor, recoil Xian pump, recoil Xian groove, it is characterized in that former pond is by intake pump and variable valve junctional membrane bio-reactor, flow-stopping plate and curtain type film assembly are installed in the middle of the membrane bioreactor, the membrane bioreactor bottom connects netted baffle plate, aeration tube and micro porous aeration head, aeration tube connects recoil Xian's pump and recoil Xian groove, and the membrane bioreactor upper end connects water pump and gas blower.

The utility model has the advantages that: (1) makes up internal recycle, realizes the cross-flow mode of aqueous vapor, to reduce the pollutant sediment on film surface; (2) set up suspended biological film bed, alleviate film and pollute; (3) design two membrane modules replace water outlet and aeration operation scheme, reach the reverse again aeration of continuous operation and reduce the purpose that film pollutes; (4) realized the PLC automatic control system, made more convenient operation.(5) assembling back-purge system: reactor bottom has designed the back flushing pipeline, regularly filler is carried out the hydraulic reverse flushing.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

In the drawings 1, former pond 2, intake pump 3, liquidometer 4, variable valve 5, membrane bioreactor 6, aeration tube 7, micro porous aeration head 8, floating stuffing 9, curtain type film assembly 10, U type differential manometer 11, air flowmeter 12, go out water pump 13, PLC Controlling System 14, backwashing pump 15, recoil washing trough 16, self-acting valve 17, netted baffle plate 18, shore pipe 19, flow-stopping plate 20, gas blower

Embodiment

As shown in Figure 1, the utility model comprises former pond (1), intake pump (2), membrane bioreactor (5), microprocessor, recoil Xian's pump (14), recoil Xian's groove (15), it is characterized in that former pond (1) is by intake pump (2) and variable valve (4) junctional membrane bio-reactor (5), be connected with flow-stopping plate (19) and curtain type film assembly (9) in the middle of the membrane bioreactor (5), membrane bioreactor (5) bottom connects netted baffle plate (17), aeration tube (6) and micro porous aeration head (7), aeration tube (6) connects recoil Xian's pump (14) and recoil Xian Chi groove (15), membrane bioreactor (5) bottom is connected with shore pipe (18), the membrane bioreactor upper end connects water pump (12) and gas blower (20) by self-acting valve (16), automatically palace gate (16) connects PLC Controlling System (13), front end at gas blower (20) connects U type differential manometer (10) and air flowmeter (11), in membrane bioreactor, place floating stuffing (8), be connected with liquidometer (3) on the membrane bioreactor (5).

Design feature of the present utility model: (1) sets up suspended biological film bed: the homemade ultralight matter of placement is ceramic suspended in the reactor top in the reactor, form a biological filtering layer, a large amount of microorganism growth are on filler, make the total system microorganism concn maintain higher level, reduce reactor inner suspension microorganism concn simultaneously, reach the purpose that alleviates the film pollution; (2) make up internal recycle: membrane bioreactor adopts two straight pipe with holes to intake above reactor, two straight tube aeration heads are placed in the corresponding position, below, realize the cross-flow mode of aqueous vapor, between membrane module, add simultaneously baffled, utilize the internal recycle of baffle plate both sides water body severe difference realization response device, to reduce the pollutant sediment on film surface; (3) design two membrane modules replace water outlet and aeration operation scheme: traditional membrane bioreactor is in order to improve membrane flux, reducing film pollutes, the general intermittently operating method of water outlet that adopts, but the membrane bioreactor of this experimental study is positioned over two curtain type film assemblies in the reactor of 96L, the mode that adopts certain frequency to realize that two films replace water outlet and aeration is moved, the general control of this test two film 20min replace switching water discharging and aeration once, but the continuous effluent of realization response device so on the one hand is with the requirement of operation continuously of better adaptation technology.On the other hand, can pass through the aeration of film is improved the mass-transfer efficiency of oxygen, and can effectively reduce the contaminated degree of film; (4) design PLC robot control system(RCS): this experimental design the PLC automatic control system, this system be provided with start/close, knob such as water inlet, aeration and water-out manners switching, time conversion, make more convenient operation, and realize that membrane bioreactor ran without interruption in 24 hours, improved conventional efficient and accuracy; (5) assembling back-purge system: reactor bottom has designed the back flushing pipeline, regularly filler is carried out the hydraulic reverse flushing.In addition, the 10cm place is provided with the analytical sampling mouth respectively below the left side of reactor packing layer middle part, membrane module middle part, membrane module, so that the effluent quality situation of analysis reactor different positions.

Claims (1)

1, a kind of film aeration biosuspension reactor, it comprises former pond, intake pump, membrane bioreactor, microprocessor, recoil Xian pump, recoil Xian groove, it is characterized in that former pond is by intake pump and variable valve junctional membrane bio-reactor, flow-stopping plate and curtain type film assembly are installed in the middle of the membrane bioreactor, the membrane bioreactor bottom connects netted baffle plate, aeration tube and micro porous aeration head, aeration tube connects recoil Xian's pump and recoil Xian groove, and the membrane bioreactor upper end connects water pump and gas blower.

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