CN202156952U

CN202156952U - Byic anaerobic reactor

Info

Publication number: CN202156952U
Application number: CN2011200491397U
Authority: CN
Inventors: 谢昕; 王吉辉
Original assignee: Shandong Benyuan Environmental Science & Technology Co Ltd
Current assignee: Shandong Benyuan Environmental Science & Technology Co Ltd; Wang Jihui; Xie Cuan
Priority date: 2011-02-28
Filing date: 2011-02-28
Publication date: 2012-03-07
Anticipated expiration: 2021-02-28

Abstract

The utility model discloses an efficient BYIC anaerobic reactor, which comprises a tank body, a water distribution system, a lower layer three phase separator, an upper layer three phase separator, an inner circulation system, a gas-liquid separator, an outer circulation system, a mud-water separation system and the like. The BYIC anaerobic reactor is characterized in that firstly, water is distributed by multipoint high speed rotating flow, thereby enabling water to be evenly distributed on the whole section of the tank body, enhancing mixing of inlet water and sludge granules and overcoming shortcomings that a traditional integrated circuit (IC) anaerobic reactor is uneven in water distribution and low in volume utilization rate; secondly, under the situation that the outer circulation system is low in methane output, weak in air lifting capacity and small in inner circulation quantity in beginning period of running, rising flow speed in the tank is guaranteed, simultaneously inlet water load impact is effectively relieved, and alkalinity of inlet water is improved; and thirdly, when the anaerobic tank runs in fluctuation mode, the mud-water separation system can timely separate sludge granules contained in water from water and enables sludge granules to return into the tank. The reactor is better in treatment effects than the traditional IC anaerobic reactor, and the removal rate of chemical oxygen demand (COD) can reach to 90% to 95%.

Description

The BYIC anaerobic reactor

Technical field

The utility model relates to water-treatment technology field, specifically is a kind of high efficiency anaerobic reactor.

Background technology

Anaerobic Microbiological Treatment Technology is under anaerobic to pass through the effect of anerobes or amphimicrobe, with the process of the decomposition of the organic pollutant in the sewage.Compare with the aerobe treatment technology, but it has that operation energy consumption is low, surplus sludge volume is few, recyclable resource is many, anti impulsion load, to advantages such as the low intermittent operatioies of nutrition requirement, thereby obtained using widely.

Along with scientific and technological progress; Anaerobic Microbiological Treatment Technology had obtained very big development in the last few years, and that has used at present has AF (anaerobic filter), AFBR (anaerobic fluidized bed reactor), UASB (upflow type anaerobic sludge sump), EGSB (expanded granular sludge bed), IC multiple anaerobic biological reactors such as (internal-circulation anaerobic reactors).

The IC anaerobic reactor is the third generation high efficiency anaerobic reactor that on UASB and EGSB basis, grows up; Because of its advantage, increasing being applied in the high concentrated organic wastewater treatment system at aspects such as construction investment, operation energy consumption, floor space, volumetric loadings.But problems such as traditional IC anaerobic reactor ubiquity water distribution is inhomogeneous, water outlet band mud, start-up period length.

The utility model content

The utility model purpose is to overcome the defective of traditional IC anaerobic reactor, a kind of multiple spot high-speed rotational water distribution is provided, forces outer circulation, sets up the high efficiency anaerobic reactor of sludge-water separating system, has guaranteed the effluent characteristics and the operation stability of reactor drum.

The utility model is realized through following technical scheme:

A kind of anaerobic reactor; Comprise tank body (1), winding stair (2) and platform (3), Fen Shuibao (4), water inlet pipe (14), water distribution system (5), gas-liquid separator (8), sludge-water separating system (9), external circulating system (10) and internal circulation system etc.; Wherein internal circulation system is the core of BYIC reactor drum; It is to be communicated with the inner assembly that constitutes by lower floor's triphase separator (6), upper strata triphase separator (7), biogas-lift pipe (11), muddy water downtake (12) etc., runs through whole tank body.External circulating system (10) is communicated with dividing water bag (4), water distribution system (5).Sludge-water separating system (9) can in time separate the granule sludge of carrying secretly in the water outlet when being combined in anaerobic jar operation fluctuation with rising pipe (15).Tank body (1) comprises water inlet pipe (14), rising pipe (15), effluent trough (16), blow-down pipe (18), thermometer hole (19), manhole (20), thief hole (21).Gas-liquid separator (8) is positioned at reactor head, and its top is provided with vapor pipe (17).

The BYIC height for reactor can reach 16m～24m, and aspect ratio is more than 4, and lower floor's triphase separator (6), upper strata triphase separator (7) are divided into three parts with reactor drum, i.e. high load region, low load region, depositing separation area, and high load region is the mixing zone near the pot bottom branch.

The mixing zone:

External circulating system (10) water outlet mixes the back with water inlet at Fen Shuibao (4) and is connected with multiple spot eddy flow water distribution system (5) through arm; Its effect is to make into water high-speed rotational entering retort; With the granule sludge thorough mixing; Be evenly distributed on the whole cross section of tank body, avoided traditional IC reactor drum inlet distribution inhomogeneous, be prone to produce problems such as dead angle, useful volume utilization ratio be low, improved impact resistance, influent alkalinity and the hydraulic load of reactor drum.

High load region:

Sewage gets into high load region, and a large amount of organism under anaerobic are converted into biogas through microbial process, and gas is collected by lower floor's triphase separator (6); Through biogas-lift pipe (11); Air-water mixture is promoted to the gas-liquid separator (8) at top, carries out gas-liquid separation at this, and biogas is derived through vapor pipe; Mud mixture then is back to the reactor bottom mixing zone through the muddy water downtake, forms internal recycle.

Low load region:

Mud mixture through lower floor's triphase separator (6) gets into low load region, further biochemical degradation, and most of organism is removed in the sewage at this moment, and biogas output obviously reduces.Biogas gets into gas-liquid separator (8) and derives through vapor pipe (17) after upper strata triphase separator (7) is collected.

Depositing separation area:

Mud mixture gets into depositing separation area behind upper strata triphase separator (7), the post precipitation supernatant is outside rising pipe (15) drain tank.Sludge-water separating system (9) organically combines with outlet system, when anaerobic jar operation fluctuation, can in time separate the granule sludge of carrying secretly in the water outlet.

The characteristics of the utility model:

1) because the difference of different waste water qualities; Biochemical is not quite similar; And when taking into account system was impacted, the biogas amount all decreased, and relied on biogas-lift power merely and the quantity of circulating water that forms; Maybe not can make IC anaerobic reactor endoparticle mud form swelling state, especially true when anaerobic system starts at first.In conjunction with EGSB anaerobic reactor form; The BYIC anaerobic reactor is provided with water circulating pump outside internal circulation system; Adopt power cycle, utilize the treating water at anaerobic reactor water outlet position to be back to the anaerobic reactor bottom, in entering anaerobic reactor behind the water inlet thorough mixing.Adopt power cycle can make full use of out alkalinity of water, regulate acid in the anaerobic reactor, and utilize water outlet to reduce reactor bottom water inlet COD concentration, reduce local acidifying possibility.Power cycle can be accelerated the anaerobic reactor toggle speed outside the initial start stage utilization, shortens start-up period.Utilize pump circulation period at abnormal running, keep inner swelling state can keep higher sludge activity, improve system's impact resistance.

2) improve traditional anaerobic reactor water inlet water distribution system, through control bottom cyclone water distributor correlation technique parameter, the assurance water inlet is uniform distribution in the anaerobic reactor bottom section, and it is too high to prevent localised load, causes the higher phenomenon of total system VFA.

3) on outlet system, set up separator for mud and water, when anaerobic jar operation fluctuation, can in time separate the granule sludge of carrying secretly in the water outlet, can guarantee a jar endoparticle amount of sludge.

The advantage of the utility model:

1) this technology can be used as the core technology of the system ensemble that combines environment protection, energy recovery and benign ecological cycles, has environment and economic benefit preferably;

2) this technology is very economic technology, on cost for wastewater treatment, wants considerably cheaper than aerobic treatment, and particularly (waste water of COD＞1500mg/L) is all the more so to medium above concentration;

3) not only energy demand is few but also can produce a large amount of energy for this technology;

4) this technical equipment load is high, takes up an area of few;

5) surplus sludge volume of this technology generation is than aerobic method much less;

6) this technology is few to nutraceutical demand;

7) but this technology treatment of high concentration organic waste water;

8) this technological bacterial classification can keep its biological activity and good sedimentation function more than at least one year end supplying with under the situation of waste water and nutrition;

9) this technical equipment scale is flexible, changeable, simple in structure, is easy to make.

10) this reactor drum makes that mass transfer effect is good, living weight is big, sludge age is long because the internal recycle ability is strong.

11) this reactor drum water distribution cross section is little, and up-flow speed is fast, and the volumetric loading rate is high, and under the prerequisite of same treatment ability and treatment effect, its volume is merely about 1/3 of other type of reactor, thereby reduced investment.

Description of drawings

Fig. 1 is the tank body synoptic diagram:

Among the figure: 1. tank body 2. winding stairs 3. platforms 19. thermometer holes 20. manholes

Fig. 2 is a BYIC anaerobic reactor structural representation

Among the figure: 4. minute water bag 5. water distribution systems 6. lower floor's triphase separators 7. upper strata triphase separators 8. gas-liquid separators 9. sludge-water separating systems 10. external circulating systems 11. biogas-lift pipes 12. muddy water downtakes 13. stopple coupons 14. water inlet pipes 15. rising pipes 16. effluent troughs 17. vapor pipes 18. blow-down pipes 21. thief holes

Embodiment

In conjunction with accompanying drawing that this anaerobic reactor practical implementation process explanation is following:

Factory effluent and outer circulation water outlet at first get into the mixing zone of reactor bottom; And with from getting into the biochemical degradation that high load region is carried out COD behind the internal recycle muddy water mixed solution thorough mixing of muddy water downtake; The COD volumetric loading here is very high; Most COD is degraded herein, produces a large amount of biogas, and biogas is collected by lower floor's triphase separator.Because the work of expansion of in the biogas Bubble Formation Process liquid being done has produced the gas lift effect.Make the mixture of biogas, mud and water rise to the gas-liquid separator of reactor head along the biogas-lift pipe, biogas at this place with mud-water separation and derived treatment system.Mud mixture then gets into the mixing zone of reactor bottom along the muddy water downtake, and with the water inlet thorough mixing after get into sludge bulking bed district, form so-called internal recycle.According to the different water inlet COD loads and the not isostructure of reactor drum, the internal recycle flow can reach 0.5-20 times of flooding velocity.Sewage after high load region is handled is except that a part is participated in internal recycle, and all the other sewage are through behind lower floor's triphase separator, and the granular mud bed district that gets into underload carries out the rest COD degraded and produces the biogas process, improves and has guaranteed effluent quality.Because most COD is degraded, so the COD of low load region load is lower, gas production rate is also less.The biogas that this place produces is collected by the upper strata triphase separator, gets into gas-liquid separator and is derived treatment system through effuser.Waste water after low load region is handled is after the triphase separator effect of upper strata, and supernatant is drained through exhalant region, and granule sludge then returns the low load region Sludge Bed.

Claims

1.BYIC anaerobic reactor; It is characterized in that: comprise tank body (1), winding stair (2), platform (3), Fen Shuibao (4), water inlet pipe (14), water distribution system (5), gas-liquid separator (8), sludge-water separating system (9), external circulating system (10) and internal circulation system; Wherein internal circulation system is to be communicated with the inner assembly that constitutes by lower floor's triphase separator (6), upper strata triphase separator (7), biogas-lift pipe (11), muddy water downtake (12) etc., runs through whole tank body; External circulating system (10) is communicated with dividing water bag (4), water distribution system (5); Sludge-water separating system (9) and rising pipe (15) combination; Tank body (1) comprises water inlet pipe (14), rising pipe (15), effluent trough (16), blow-down pipe (18), thermometer hole (19), manhole (20), thief hole (21); Gas-liquid separator (8) is positioned at reactor head, and its top is provided with vapor pipe (17).

2. anaerobic reactor as claimed in claim 1 is characterized in that: described water distribution system (5) adopts the multiple spot high-speed rotational, multiple spot uniform distribution on jar cross section, and single-point flow adjustable, eddy flow water outlet flow velocity is not less than 2m/s.

3. anaerobic reactor as claimed in claim 1 is characterized in that: described external circulating system (10) makes full use of the water outlet head, and dry point is near jar top, add less power with a large amount of effluent recyclings to intake zone.

4. anaerobic reactor as claimed in claim 1 is characterized in that: described sludge-water separating system (9) organically combines with outlet system, when anaerobic jar operation fluctuation, can in time separate the granule sludge of carrying secretly in the water outlet.