CN2570263Y

CN2570263Y - Anaerobic and aerobic integrated sewage treating device

Info

Publication number: CN2570263Y
Application number: CN 02273044
Authority: CN
Inventors: 胡勇有; 黄瑞敏; 汪晓军; 周勤; 凌霄
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2002-09-06
Filing date: 2002-09-06
Publication date: 2003-09-03
Anticipated expiration: 2012-09-06

Abstract

The utility model provides an anaerobic and aerobic integrated sewage treating device, which is composed of an inner cylinder and an outer cylinder which are provided with different diameters and are invaginated, wherein, the inner cylinder is used as an aerobic zone, and an annular passage is arranged between the inner cylinder and the outer cylinder to form an anaerobic zone. The utility model has the advantages of simple technological process, no secondary sedimentation pools, rapid start-up, stable operation, short hydraulic detention time, high efficiency, convenient operation enforcement, simple device structure, compact structure, small occupation area, less comparable capital construction investment, low operating cost, low noise in the process of operation, no foreign odor, no influence to the ambient environment and wide applying prospects. The utility model is suitable for the sewage treatment of the environment of restaurants, living districts, unit barracks, factories, hospitals, etc.

Description

Anaerobic aerobic integratedization waste disposal plant

Technical field

The utility model relates to sewage disposal technology, particularly a kind of anaerobic aerobic integratedization waste disposal plant.

Background technology

In existing sewage treatment technology, special anaerobic film bed is a kind of anerobic sowage treatment technology efficiently, it has startup soon, mud is difficult for running off, and can select the advantages such as filler of unlike material for use, but its long reaction time, pool volume is big, mud easily runs off, and the bottom is easily stopped up, and the filler expense is more expensive; BAF also is a kind of aerobic sewage treatment technology efficiently, the BAF biggest advantage is to integrate bio-oxidation and hold back the suspended solids function, saved second pond, in addition, it is big that this treatment process also has a volumetric loading, hydraulic load is big, floor space is little, initial cost is few, the oxygen transfer rate height, characteristics such as effluent quality is good, but it also exists the concentration of suspension SS to water inlet to have relatively high expectations, and head loss is bigger, and total lift height of water is big, hydraulic load is bigger in short period of time in backwash operation, and the recoil water outlet directly passes back into the deficiency that preliminary sedimentation tank can cause bigger impact load to preliminary sedimentation tank.A kind of " anaerobic aerobic integratedization waste disposal plant " disclosed in the patent No. is 94238921.2 Chinese utility model patent, form by the inside and outside circle jacket casing of different diameter is folded, in the inner cylinder is anaerobic zone, circular channel between the inside and outside cylinder constitutes aerobic zone and settling region, shut the bottom, circular channel, by separating with the vertical partition plate that leaves the slit at the bottom of the circular channel, sewage advances from the anaerobic zone bottom, top goes out, enter aerobic zone backside flow place, crack at the bottom of the dividing plate, flow into the settling region again, rise to the top drip pan then, qualified water gives off water purifier, and treatment unit is arranged on the support; This treatment unit cost is low, and efficient is higher; But also there is significant disadvantages: (1) complex structure, include triphase separator, the retaining mud collar, members such as slip flow deflector, and because aerobic zone is an annular, so the installation more complicated of aeration tube; (2) complex process comprises anaerobism, aerobic, precipitation three part of contaminated water biological treatments, installs, safeguards comparatively inconvenience.

Summary of the invention

The purpose of this utility model is, provides a kind of simple in structure, high-level efficiency, less energy-consumption, and cost is low, the anaerobic aerobic integratedization waste disposal plant of convenient operating maintenance.

In order to achieve the above object, the utility model is realized by following scheme: this anaerobic aerobic integratedization waste disposal plant comprises anaerobic zone and aerobic zone two portions, it adopts folded composition of inside and outside circle jacket casing of different diameter, inner cylinder is as BAF (abbreviation aerobic zone), and the circular channel that is provided with certain distance between inner cylinder and the out cylinder constitutes flow lifting type special anaerobic film bed (abbreviation anaerobic zone); Anaerobic zone inside is provided with the anaerobism filler, and the bottom is provided with the sewage water inlet pipe of introducing sewage from the outside; Aerobic zone inside is provided with aerobic filler, and the bottom is provided with the final outflow water pipe; Be provided with the water outlet weir plate around the inner cylinder top,, make through the water after the anaerobic zone anaerobic biological treatment and flow into aerobic zone as the effluent weir of out cylinder and the influent weir of inner cylinder.

Described anaerobic zone bottom is provided with the anaerobism shore pipe, and the aerobic zone bottom is provided with aerobic inlet pipe, and top is provided with back flushing water shoot and relief sewer; The out cylinder outer setting has back flushing inlet pipe, aerobic evacuated tube and rising pipe, back flushing inlet pipe, aerobic evacuated tube and rising pipe connect to a house steward by valve, house steward passes the bottom that anaerobic zone enters aerobic zone, be installed with the hole on the house steward, can realize the function of gas distribution, water outlet and emptying.

Described anaerobism filler divides the two-layer special anaerobic film bed that is put between the inner/outer tube, and lower floor's filler is pressed centripetal direction and arranged, the upper strata filler is by circumferential directions (vertical with the lower floor filler), and aerobic filler is arranged on the inner core filtrate supporting layer, account for inner drum long-pending 60%.

Described anaerobism filler includes materials such as asbestos waved plate, elasticity of plastics 3-D filler, combined stuffing; Aerobic filler comprises materials such as Biohaydite filter material, volcanics, coke, quartz sand, gac, expansion silico-aluminate, polystyrene.

The action principle of this anaerobic aerobic integratedization sewage treatment process is: in conjunction with adopting special anaerobic film bed and BAF technology that sewage is handled; Sewage enters the bottom of special anaerobic film bed (anaerobic zone) by sewage water inlet pipe, and after anaerobic biological treatment, current rise and go into BAF (aerobic zone) by the effluent weir plate current and carry out the aerobe aeration and handle, and handles qualified water and flows out from rising pipe and discharge; Wherein, general two stages of experience of the working process of special anaerobic film bed biological treatment, be acidication stage (fs) and product methane phase (subordinate phase), by the acidication bacterium solvability larger molecular organics in the waste water is resolved into higher lipid acid, glycerine, amino acid, monose, alcohols, carbonic acid gas, ammonia, hydrogen etc. the treatment stage of acidication, simultaneously insoluble organism is resolved into the solubility small organic molecule; Produce methane phase promptly by methanogen with simple substrate, be converted into methane as acetate, methyl alcohol and carbonic acid gas and hydrogen, this shows that special anaerobic film bed has improved the biodegradability of sewage when disposing of sewage, handle for follow-up aerobe and created favourable condition.

BAF aerobe treating processes is: the less particulate filter of a certain amount of particle diameter of filling in the filter tank, the filter material surface microbial film of growing, the inner aeration in filter tank, when effluent stream through the time, utilize on the filtrate the strong oxidative degradation ability of high-concentration biological film amount that sewage is carried out fast purification, this is the oxidation degradation process; Simultaneously, because of effluent stream through the time filtrate be compaction state, utilize particle diameter of filter medium features of smaller and biomembranous biological flocculation can hold back a large amount of suspended substances in the sewage, and guarantee that the microbial film that comes off can not drift out with water, this is to hold back process; Behind the operation certain hour, because of the increase of head loss, need to carry out back flushing to the filter tank, the suspended substance of holding back with release also upgrades microbial film, and this is a backwash process; In general, BAF has following feature: (1) uses particulate filler as bio-carrier, as haydite, coke, quartz sand, gac etc.; (2) be different from general biological filter and biological filtering tower combined working, when removing BOD, ammonia nitrogen, need carry out aeration: (3) high hydraulic load, high volumetric loading and high biomembrane activity; (4) have oxidation degradation and the dual-use function of holding back suspended substance, do not need to establish again secondary sedimentation basins after the biological processing unit; (5) need regularly carry out back flushing; Clean the suspended substance of holding back in the filter tank, upgrade microbial film simultaneously.

The utility model compared with prior art has following advantage:

(1) this anaerobic aerobic integratedization waste disposal plant precipitate-free area and mud return-flow system, technology is simple, compact construction, floor space is little, and comparable initial cost is few.

(2) be easy to Installation and Debugging, operational management is convenient, operates fairly simple.

(3) noise is little in operational process, and free from extraneous odour does not have influence to surrounding environment.

(4) but producing in serial form, treatment capacity is big, is applicable to the sewage disposal of environment such as restaurant restaurant, biotope and factory hospital.

Description of drawings

The structural representation of anaerobic aerobic integratedization of Fig. 1 the utility model waste disposal plant.

Fig. 2 is that the 1-1 of device shown in Figure 1 is to sectional view.

Fig. 3 is that the 2-2 of device shown in Figure 1 is to sectional view.

Fig. 4 is that the 3-3 of device shown in Figure 2 is to sectional view.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further concrete description, but embodiment of the present utility model is not limited thereto.

Embodiment

Fig. 1～Fig. 4 shows concrete structure of the present utility model, as seen from Figure 1, this anaerobic aerobic integratedization waste disposal plant is made up of the out cylinder 1 and inner cylinder 2 intussusceptions of different diameter, inner cylinder 2 is lower than out cylinder 1, be provided with water outlet weir plate 15 around the top of inner cylinder, water outlet weir plate 15 is fixed in by screw around inner cylinder 2 tops, as the effluent weir of out cylinder 1 and the influent weir of inner cylinder 2, can make after anaerobic zone is handled water flow into aerobic zone; As shown in Figure 2, the circular channel that is provided with certain distance between inner cylinder 2 and the out cylinder 1 constitutes the flow lifting type special anaerobic film bed, be called for short anaerobic zone 3, anaerobic zone inside is provided with elastic solid filler layer 3, elastic solid filler layer 3 is positioned on the support 4, and support 4 is connected with out cylinder 1 inwall with inner cylinder 2 by welding, and elastic solid filler layer 3 is divided into two-layer 3-1,3-2, the filler 3-2 of lower floor presses centripetal direction and arranges, upper strata filler 3-1 by with the lower floor vertical direction of filler 3-2 be circumferential directions; Anaerobic zone 3 bottoms are provided with the sewage water inlet pipe 5 of introducing sewage from the outside, and its end and anaerobism water inlet water distributor 6 is connected, anaerobism water inlet water distributor 6 below be cross-linked four short tubes 7 with medullary ray angle at 45; Anaerobic zone 3 bottoms also are provided with anaerobism shore pipe 8 to carry out regular spoil disposal.

Inner cylinder 2 is as BAF, be called for short aerobic zone, aerobic zone inside is provided with Biohaydite filter material layer 9, and Biohaydite filter material layer 9 is arranged on the filtrate supporting layer 10, filtrate supporting layer 10 is connected with the inwall of inner cylinder 2 by welding, and Biohaydite filter material 9 accounts for 60% of inner cylinder 2 volumes; The aerobic zone bottom is provided with aerobic inlet pipe 11, and aerobic inlet pipe 11 is passed anaerobic zone 3 and entered aerobic zone, and the aerobic gas distribution perforated pipe 12 that is provided with bottom aerobic zone connects the staggered qi-emitting hole of 12 liang of rows of perforated pipe and medullary ray angle at 45; Aerobic zone top is provided with back flushing water shoot 13 (as shown in Figure 3) and relief sewer 14, and the back flushing water outlet of back flushing water shoot 13 is positioned on inner cylinder 2 walls under the water outlet weir plate 15, and the other end passes the water port of anaerobic zone 3 until out cylinder 1 outside; The overflow port of relief sewer 14 is positioned at aerobic zone, and its height is identical with the height of inner cylinder 2, and the other end passes the water port of anaerobic zone 3 until out cylinder 1 outside; The aerobic zone bottom also is provided with the rising pipe 16 that the water of will finish dealing with is discharged the treatment unit outside, back flushing inlet pipe 18, aerobic evacuated tube 17 outside rising pipe 16 and the out cylinder 1 connect to a house steward 19 by valve, house steward 19 passes the bottom that anaerobic zone 3 is connected to aerobic zone, be installed with two rows and the staggered aperture in medullary ray angle at 45 on the arm that house steward 19 connects, in order to realize the function of gas distribution, water outlet and emptying.

The technological process of utilizing above-mentioned anaerobic aerobic integratedization waste disposal plant to realize is: sewage enters anaerobic zone 3 (special anaerobic film bed) by sewage water inlet pipe 5 and carries out anaerobic biological treatment, remove part pollutent (CODCr, BOD5), sewage is 2～8 hours in the residence time of special anaerobic film bed, and the volumetric loading of special anaerobic film bed is 1.2～3.6kgCOD/m ³.d; Enter BAF from the effusive water of special anaerobic film bed and carry out the aerobe processing, further remove pollutent (CODCr, BOD5), sewage is 1～4 hour in the residence time of BAF, and the volumetric loading of BAF is 2.4～7.2kgCOD/m ³.d, gas-water ratio is (1.5～5): 1, after the BAF processing is qualified, can discharge.

The influent concentration of this anaerobic aerobic flocculation precipitation waste disposal plant (water inlet is after oil removal is handled): chemical oxygen demand COD _Cr＜800mg/L, biological oxygen demand BOD ₅＜500mg/L, ss suspended solid＜200mg/L, ammonia nitrogen NH ₃-N＜80mg/L, day processing water yield 100m3/d.

Water outlet monitoring result: chemical oxygen demand COD _CrRemain essentially in below the 80mg/L, its clearance reaches more than 90～95%; Biological oxygen demand is at BOD ₅Below 20mg/L, its clearance reaches more than 95～97%; Ss suspended solid is less than 60mg/L; Ammonia nitrogen NH ₃-N is below 15mg/L, and its clearance reaches more than 80%.

Claims

1, a kind of anaerobic aerobic integratedization waste disposal plant, by folded anaerobic zone and the aerobic zone formed of the inside and outside circle jacket casing of different diameter, it is characterized in that: inner cylinder (2) is provided with the circular channel and constitutes anaerobic zone (3) as aerobic zone between inner cylinder (2) and the out cylinder (1).

2, anaerobic aerobic integratedization waste disposal plant according to claim 1 is characterized in that: described anaerobic zone (3) inside is provided with the anaerobism filler; Described aerobic zone inside is provided with aerobic filler.

3, anaerobic aerobic integratedization waste disposal plant according to claim 1 is characterized in that: be provided with water outlet weir plate (15) around inner cylinder (2) top; Anaerobic zone (3) bottom is provided with sewage water inlet pipe (5) and anaerobism shore pipe (8); Aerobic zone top is provided with back flushing water shoot (13) and relief sewer (14), the bottom is provided with rising pipe (16) and aerobic inlet pipe (11), rising pipe (16) connects into a house steward (19) with back flushing inlet pipe (18), the aerobic evacuated tube (17) of out cylinder (1) outside by valve, and house steward (19) passes the bottom that anaerobic zone (3) enters aerobic zone.

4, anaerobic aerobic integratedization waste disposal plant according to claim 2 is characterized in that: described anaerobism filler is asbestos waved plate, elasticity of plastics 3-D filler, combined stuffing.

5, anaerobic aerobic integratedization waste disposal plant according to claim 2 is characterized in that: aerobic filler is Biohaydite filter material, volcanics, coke, quartz sand, gac, expansion silico-aluminate, polystyrene.