CN103319054A - Biofilm treatment process of organic wastewater and equipment thereof - Google Patents
Biofilm treatment process of organic wastewater and equipment thereof Download PDFInfo
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- CN103319054A CN103319054A CN2013102977632A CN201310297763A CN103319054A CN 103319054 A CN103319054 A CN 103319054A CN 2013102977632 A CN2013102977632 A CN 2013102977632A CN 201310297763 A CN201310297763 A CN 201310297763A CN 103319054 A CN103319054 A CN 103319054A
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Abstract
The invention discloses a biofilm treatment process of organic wastewater and equipment thereof. The process provided by the invention comprises the following steps: 1) first biological treatment: pretreated wastewater is processed by a moving bed biofilm reactor; and 2) secondary biological treatment: wastewater is processed by a fixed bed biofilm reactor. The equipment comprises a tank body and a biofilm filler arranged inside the tank body. The left side of the tank body is provided with a water inlet, and the right side of the tank body is provided with a water outlet. A vertical section of the tank body is provided with a baffle plate. The bottom of the tank body, at the left side of the baffle plate, is provided with an aerating apparatus. A slopping panel is arranged below the baffle plate. There is a gap between the bottom of the baffle plate and the slopping panel. The water outlet of the tank body is connected with a tower body. The top end of the tower body is equipped with a water inlet, and the bottom of the tower body is provided with a water outlet. A plurality of mounting plates are arranged at intervals from the top end to the bottom inside the tower body. Flat-end cone bodies are laid flat on the mounting plates, and overflow ports are arranged on adjacent mounting plates in a staged pattern. According to the invention, organic mattes are efficiently degraded, efficiency of nitratlon reaction and denitrification reaction is greatly raised, and the disadvantage that the fixed bed biofilm reactor is easy to obstruct is overcome.
Description
Technical field
The present invention relates to wastewater processing technology, refer to particularly a kind of microbial film treatment process and equipment thereof of organic waste water.
Background technology
Organic waste water, as: sanitary sewage, Metallurgical Waste Water, and in the trade effluents such as food-processing and papermaking, contain a large amount of carbohydrate, protein, grease, or the organic substance such as xylogen, the harm such as Water Eutrophication easily caused, therefore, organic waste water needs could discharge after treatment.In recent years, in the treatment process of organic waste water, biomembrance process is a kind of aerobic type method for processing organic wastewater parallel with activated sludge process, biomembrance process is compared with activated sludge process, have some peculiar advantages, as: need not sludge reflux, operational management easily, without the sludge bulking problem, be easy to microorganism existence, and stable etc., therefore, biomembrance process has been widely used in the second-stage treatment and small-sized Industrial Wastewater Treatment of sanitary sewage disposal.
Biomembrance process mainly comprises static bed biomembrane reactor technique and the MBBR techniques such as biological filter and blodisc.Wherein, static bed biomembrane reactor technique often exists also when having biomembrance process Inherent advantage fixedly that filter bed easily stops up, channeling is serious, and the lower shortcoming of loading.MBBR technique (MBBR) is used the ultimate principle of biomembrance process, take full advantage of the advantage of activated sludge process, by in reactor, adding the suspending carrier of some amount, improve biomass and biological species in the reactor, thereby improve the processing efficiency of reactor, effectively overcome the shortcoming of traditional activated sludge process and fixed type biological embrane method, MBBR is a kind of novel between activated sludge process and fixed biologically embrane method, efficient recombining process, have the following advantages: 1) suspending carrier is the procreation of microorganism, good condition has been created in increment, microbe species is various in the microbial film, sludge concentration is large, operating load is high, and processing power is strong; 2) the sludge creation amount is few, and the biological sludge particle that splits away off on the microbial film is large, and settling property is good, is easy to solid-liquid separation; 3) should not block, need not repeatedly wash, need not reflux, carrier is evenly distributed, and is simple to operate, reliable; 4) carrier has increased the mass transfer area between microbial film and sewage and bubble in fluid mapper process, has increased rate of mass transfer, has not only strengthened mass transfer process, has also improved utilization ratio; 5) the MBBR system has aerobic and the anaerobic metabolism function simultaneously, and to used water difficult to degradate and the environmental factors susceptibility that is unfavorable for carrying out a biological disposal upon low, strong adaptability, based on above-mentioned advantage, MBBR technique has been widely used in the biochemical treatment of organic waste water, yet the problems such as MBBR technique often exists that denitrification efficiency is low, easily loss of filler, mud and carrier separation difficulty.
Summary of the invention
The microbial film treatment process and the equipment thereof that the purpose of this invention is to provide a kind of organic waste water, this technique has overcome static bed biomembrane reactor and has easily stopped up, and the MBBR filler easily runs off and the low problem of denitrification efficiency, improved the processing efficiency of organic waste water.
For achieving the above object, the technical solution used in the present invention is: a kind of microbial film treatment process of organic waste water comprises the steps:
1) one-level biological treatment: adopt MBBR technique that pretreated organic waste water is carried out the Aerobic-anaerobic biological degradation and process, the specific surface area of reactor inner suspension filler is 200～500m2/m3, density is 0.92～1.0g/L, and the stacking volume of floating stuffing is 20～70% with the useful volume of reactor ratio;
2) two stage biological is processed: adopt static bed biomembrane reactor technique that organic waste water is carried out the biological degradation of the Aerobic-anaerobic degree of depth and process, organic waste water is fixedly filler of serpentine flow warp from top to bottom in reactor.
In the described step 1), floating stuffing is polyethylene, acrylic plastering, or the combination of one or more arbitrary proportions in the urethane.Floating stuffing is the core of MBBR, also is the important place of microbial film apposition growth and degradation of organic substances matter, also is simultaneously to strengthen mass transfer, improves hydraulics and reaction conditions in the reactor, and the important channel of improving load; Density is a little less than water and the large polyethylene of specific surface area, acrylic plastering and urethane are as filler, its surface is easy to the biomembranous production of adhering to, filler is not conglomeration in the suspended motion in water, do not stop up, all the time have higher porosity and good venting capability, but and aging microbial film Automatic-falling under water impact.
A kind of for realizing the microbial film treatment facility of the organic waste water that above-mentioned technique designs, comprise the pond body, accommodate in the body of described pond be used to sticking biomembranous filler, the left side of described pond body has water-in, the right side of described pond body has water outlet, described pond body longitudinal section is provided with baffle plate, the body bottom, pond in described baffle plate left side is provided with aerating apparatus, described baffle plate below is provided with the swash plate that raises gradually from left to right, leave the gap between described baffle plate bottom and described swash plate, water outlet one side of described pond body is provided with tower body, described tower body top has water-in, the water-in of described tower body is connected with the water outlet of described pond body, described tower body bottom has water outlet, is arranged at intervals with the polylith back up pad along the top to the bottom direction in the described tower body, and tiling has some be used to sticking biomembranous tack centrum on the described back up pad, and interleaved on the adjacent back up pad have overflow port, thereby make the organic waste water in the described tower body be snakelike flow state.The tack centrum is difficult for stopping up so that the interior hydraulics of this static bed biomembrane formula tower body is good, does not need back flushing.
Further, the volume of the tack centrum of the described tower body of the volume ratio bottom of the tack centrum on described tower body top is large.The truncated cone that is tiled in the tower body bottom is designed to than the little form of top truncated cone volume, this mainly is in order to improve denitrification efficiency in the tower body bottom, because the truncated cone surface that volume is little more easily forms thicker microbial film, be conducive to the carrying out of anti-nitration reaction.
Further, the pond body volume on the left of the described baffle plate and the pond body volume ratio on described baffle plate right side are: 2: 1～5: 1.Be that baffle plate is divided into volume ratio with the pond body and is: 2: 1～5: 1 aerobic zone and anaerobism (oxygen of holding concurrently) district, thus in the body of same pond, carry out simultaneously aerobic and anaerobic biochemical reaction and biofilm filtration.
Further, be connected its upper strata back up pad of the top support of described tack centrum with its place back up pad bottom the described tack centrum.Truncated cone bottom is soldered or be fixed on this layer back up pad, and the upper strata back up pad can be supported in the top of tack centrum, thereby has improved integrally-built stability.
Further, the top of described baffle plate is fenestral fabric, and the bottom is the sealed shape structure.The baffle plate bottom is the sealed shape entity structure, is used for blocking filler, prevents that filler runs off, and baffle plate top is set to the latticed water that was conducive to; Simultaneously, baffle plate has strengthened the convection current of aeration zone, body left side, pond water body and has perturbed; In addition, baffle plate is divided into aerobic zone and anaerobic zone with the pond body to a certain extent, regulates the dissolved oxygen concentration in the body of same pond, is convenient to the carrying out of nitrification and denitrification.
Preferably, the angle of inclination of described swash plate is 30～60 degree.The Main Function of swash plate is to be convenient to mud to be back to the aeration zone along swash plate under action of gravitation, and then increases the concentration of active sludge.
Further preferably, described overflow port is departed from by the left side of described back up pad and described tower body inwall or right side and forms, and described overflow port width is 40～150mm.Overflow port is used for making organic waste water flow to lower one deck back up pad from this layer back up pad, and the elsewhere on each back up pad except overflow port need seal, and the waste water seepage can not occur.
Compared with prior art, the present invention has following advantage:
One, the present invention is with MBBR technique and the ingenious combination of static bed biomembrane reactor technique, put forth effort to improve hydraulics and reaction conditions in the reactor, and by optimizing fixedly filler of floating stuffing and appropriate design, the easy obstruction of traditional static bed biomembrane reactor and effluent quality have effectively been overcome poor, and the MBBR filler easily runs off and the inefficient shortcoming of anti-nitration reaction, in the organic while of efficient degradation, significantly improved the efficient of nitration reaction and anti-nitration reaction, so that the COD clearance of organic waste water reaches more than 75% the TN(total nitrogen) clearance reaches more than 45%.
Its two, microbial film solids concn of the present invention is high, biomass is large, has obtained higher organic loading and stronger shock-resistant ability.
Its three, the present invention does not need sludge reflux, the sludge creation amount is few, equipment is simple, starts soon, operation and maintenance is convenient, running cost is low.
Its four, the present invention can be widely used in city domestic sewage, food and drink waste water, coking chemical waste water and other contain the waste water of organic thing, the water quality after the processing can satisfy relevant emission standard and middle water reuse index.
Description of drawings
Fig. 1 is a kind of structural representation of microbial film treatment facility of organic waste water.
Fig. 2 is the structural representation of tack centrum among Fig. 1.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, but the present invention is not limited to following embodiment.
The microbial film treatment facility of the organic waste water shown in Fig. 1 comprises pond body 1, accommodates in the pond body 1 be used to sticking biomembranous filler 2, and filler 2 is 200～500m for specific surface area
2/ m
3Density is the floating stuffing of 0.92～1.0g/L, preferably polyethylene, acrylic plastering, or in the urethane one or more, the left side of pond body 1 has water-in 3, water-in 3 links to each other with fresh feed pump 14, pipeline between water-in 3 and the fresh feed pump 14 is provided with under meter 15 and pond body inlet valve 16, the right side of pond body 1 has water outlet 4, the longitudinal section of pond body 1 is provided with baffle plate 5, pond body 1 volume in baffle plate 5 left sides and pond body 1 volume ratio on baffle plate 5 right sides are: 2: 1～5: 1, the top of baffle plate 5 is fenestral fabric, the bottom is the sealed shape entity structure, be used for blocking filler, pond body 1 bottom in baffle plate 5 left sides is provided with aerating apparatus 6, aerating apparatus 6 links to each other with air compressor 17, pipeline between aerating apparatus 6 and the air compressor 17 is provided with under meter 18 and air intake valve 19, baffle plate 5 belows are provided with the swash plate 7 that raises gradually from left to right, preferred 30～60 degree in the angle of inclination of swash plate 7, more preferably 45 spend, 7 of baffle plate 5 bottoms and swash plates leave the gap, the water outlet 4 of pond body 1 links to each other with the water-in 9 of tower body inlet valve 21 with tower body 8 tops by tower body intake pump 20, wherein, also be provided with an one-level water outlet relief outlet 22 on the water outlet 4 of pond body 1, tower body 8 bottoms have water outlet 10, tower body 8 is interior to be arranged at intervals with polylith back up pad 11 along the top to the bottom direction, back up pad 11 is selected has certain thickness and corrosion-resistant and ageing-resistant material, preferred polyolefm class or polyester material, tiling has some be used to sticking biomembranous tack centrum 12 on each back up pad 11, tack centrum 12 bottom weldings are on its place back up pad 11, its upper strata back up pad 11 of the top support of tack centrum 12, this tack centrum 12 can be tack cone (as shown in Figure 2) or tack elliptical cone, the volume of the tack centrum 12 of volume ratio tower body 8 bottoms of the tack centrum 12 on tower body 8 tops is large, and the staggered overflow port 13 that is provided with on the adjacent back up pad 11, this overflow port 13 is departed from by the left side of back up pad 11 and tower body 8 inwalls or right side and forms, overflow port 13 width are 40～150mm, elsewhere on each back up pad 11 except overflow port 13 all seals, the waste water seepage can not appear, the overflow port 13 that is crisscross arranged makes the organic waste water in the tower body 8 be snakelike flow state, is provided with sludge outlet 23 at the bottom of the tower.
The technical process of aforesaid device is as follows:
1) one-level biological treatment: open pond body inlet valve 16, with fresh feed pump 14 pretreated organic waste water is pumped into the pond body 1 through under meter 15 from water-in 3, and add stacking volume and pond body 1 useful volume in the pond body 1 than the biofilm packing 2 that is 20～70%, then open aerating apparatus 6, stick this moment has biomembranous filler 2 to be in mobile suspended state, organic waste water fully contacts with microbial film on being attached on filler 2, pond body 1 interior carry out simultaneously aerobic, anaerobic biochemical reaction and biofilm filtration, and then reduction organism and total nitrogen content, and but the aging microbial film that adheres on the filler 2 Automatic-falling under water impact is discharged with the waste water after processing;
2) two stage biological is processed: through the organic waste water after the one-level biological treatment from the water outlet 4 of pond body 1 out after, pump in the tower body 1 through the water-in 9 of tower body intake pump 20 from tower body 8 tops, left and right sides horizontal flow on organic waste water each back up pad 11 in tower body 1, on the whole, the overflow port 13 of organic waste water on each layer back up pad 11 successively is serpentine flow from top to bottom has biomembranous tack centrum 12 through sticking, fully contact with the microbial film on being attached on tack centrum 12, carry out biochemical degradation, the nitrification and denitrification reaction, until the water outlet 10 from tower body 8 bottoms is discharged behind the lowest layer, thereby further reduce organism and total nitrogen content, reach relevant criterion, waste water after the processing can reuse be made the middle water of higher level, and the microbial film that comes off is deposited to tower body 1 bottom, and is regularly emptying by sludge outlet 23, do not need back flushing.Wherein, the organic waste water after the one-level biological treatment also can directly be discharged from one-level water outlet relief outlet 22, is used for lower industry or the domestic water of standard, as: defoamer water and reclaimed water etc. in the biological process.
Among the present invention, organic waste water at first carries out the one-level biological treatment through MBBR, then enter static bed biomembrane reactor and carry out the two stage biological processing, and stream oriented device all carries out Aerobic-anaerobic biochemical reaction and biofilm filtration simultaneously, can effectively remove organism and carry out the nitration denitrification reaction, nitrogen removal rate is high.With present device coking chemical waste water is carried out lab scale test, experiment effect shows, equipment moves 38 days aftertreatment successfuls continuously, and the waste water COD clearance reaches 75%, and nitration reaction almost 100% is carried out, and the TN clearance reaches more than 45%; This equipment reaches more than 56% the nitrogen removal rate of sanitary sewage.
Claims (9)
1. the microbial film treatment process of an organic waste water is characterized in that: comprise the steps:
1) one-level biological treatment: adopt MBBR technique that pretreated organic waste water is carried out the Aerobic-anaerobic biological degradation and process, the specific surface area of reactor inner suspension filler is 200～500m
2/ m
3, density is 0.92～1.0g/L, the stacking volume of floating stuffing is 20～70% with the useful volume of reactor ratio;
2) two stage biological is processed: adopt static bed biomembrane reactor technique that organic waste water is carried out the biological degradation of the Aerobic-anaerobic degree of depth and process, organic waste water is fixedly filler of serpentine flow warp from top to bottom in reactor.
2. the microbial film treatment process of organic waste water according to claim 1, it is characterized in that: in the described step 1), floating stuffing is polyethylene, acrylic plastering, or the combination of one or more arbitrary proportions in the urethane.
3. one kind for realizing the microbial film treatment facility of the organic waste water that the described technique of claim 1 designs, comprise pond body (1), accommodate in the described pond body (1) be used to sticking biomembranous filler (2), the left side of described pond body (1) has water-in (3), the right side of described pond body (1) has water outlet (4), it is characterized in that: the longitudinal section of described pond body (1) is provided with baffle plate (5), pond body (1) bottom in described baffle plate (5) left side is provided with aerating apparatus (6), described baffle plate (5) below is provided with the swash plate (7) that raises gradually from left to right, leave the gap between described baffle plate (5) bottom and described swash plate (7), water outlet (4) one sides of described pond body (1) are provided with tower body (8), described tower body (8) top has water-in (9), the water-in (9) of described tower body (8) is connected with the water outlet (4) of described pond body (1), described tower body (8) bottom has water outlet (10), be arranged at intervals with polylith back up pad (11) along the top to the bottom direction in the described tower body (8), the upper tiling of described back up pad (11) has some be used to sticking biomembranous tack centrum (12), and adjacent back up pad (11) is upward interleaved overflow port (13), thereby makes the organic waste water in the described tower body (8) be snakelike flow state.
4. the microbial film treatment facility of organic waste water according to claim 3, it is characterized in that: the volume of the tack centrum (12) of the described tower body of volume ratio (8) bottom of the tack centrum (12) on described tower body (8) top is large.
5. the microbial film treatment facility of organic waste water according to claim 3 is characterized in that: pond body (1) volume in described baffle plate (5) left side and pond body (1) volume ratio on described baffle plate (5) right side are: 2: 1～5: 1.
6. the microbial film treatment facility of each described organic waste water in 5 according to claim 3, it is characterized in that: described tack centrum (12) bottom is connected its upper strata back up pad (11) of the top support of described tack centrum (12) with its place back up pad (11).
7. the microbial film treatment facility of each described organic waste water in 5 according to claim 3, it is characterized in that: the top of described baffle plate (5) is fenestral fabric, and the bottom is the sealed shape structure.
8. the microbial film treatment facility of each described organic waste water in 5 according to claim 3, it is characterized in that: the angle of inclination of described swash plate (7) is 30～60 degree.
9. the microbial film treatment facility of each described organic waste water in 5 according to claim 3, it is characterized in that: described overflow port (13) is departed from by the left side of described back up pad (11) and described tower body (8) inwall or right side and forms, and described overflow port (13) width is 40～150mm.
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| CN2013102977632A CN103319054A (en) | 2013-07-16 | 2013-07-16 | Biofilm treatment process of organic wastewater and equipment thereof |
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| CN2013102977632A CN103319054A (en) | 2013-07-16 | 2013-07-16 | Biofilm treatment process of organic wastewater and equipment thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150586A (en) * | 2014-08-18 | 2014-11-19 | 安徽大学 | Moving bed biofilm reactor and its sewage treatment method |
| CN106145345A (en) * | 2015-04-10 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of biomembrane denitrogenation reactor and denitrogenation method thereof |
| CN111533245A (en) * | 2020-04-15 | 2020-08-14 | 杭州银江环保科技有限公司 | Ecological system integrating functions of rainwater sewage regulation, water purification, ecological landscape and reclaimed water reuse |
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| CN102910780A (en) * | 2012-07-06 | 2013-02-06 | 广州市环境保护工程设计院有限公司 | Device and method for processing high-salinity degradation-resistant waste water |
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| CN1554599A (en) * | 2003-12-23 | 2004-12-15 | 清华大学 | Process for treating waste water by aerobic-anaerobic microbic repeated coupling |
| CN200992507Y (en) * | 2006-12-20 | 2007-12-19 | 山东大学 | Spray-type semi-aerobic bio-film filtering bed |
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| CN104150586A (en) * | 2014-08-18 | 2014-11-19 | 安徽大学 | Moving bed biofilm reactor and its sewage treatment method |
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| CN106145345A (en) * | 2015-04-10 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of biomembrane denitrogenation reactor and denitrogenation method thereof |
| CN111533245A (en) * | 2020-04-15 | 2020-08-14 | 杭州银江环保科技有限公司 | Ecological system integrating functions of rainwater sewage regulation, water purification, ecological landscape and reclaimed water reuse |
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Application publication date: 20130925 |