CN201777929U

CN201777929U - Internal circulation type up-flow anaerobic sludge bed reactor

Info

Publication number: CN201777929U
Application number: CN2010202707461U
Authority: CN
Inventors: 于鲁冀; 王莉; 孙向鹏; 吴连成; 宋宏杰; 梁亦欣
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2010-07-26
Filing date: 2010-07-26
Publication date: 2011-03-30
Anticipated expiration: 2020-07-26

Abstract

The utility model relates to an internal circulation type up-flow anaerobic sludge bed reactor which can effectively solve the problems of too large size of a three-phase separator, higher content of suspended substances in outlet water, need of external power and high operation cost, and the structure is as follows: the lower part in a device body is a sludge bed zone, a floating zone is arranged above the sludge bed zone, the three-phase separator with the upper part extending out of the device body is mounted above the center of the floating zone, a three-phase separation zone is arranged below a gas collection chamber in the three-phase separator, a sedimentation zone is formed between the exterior of the three-phase separator above the sedimentation zone and the inner wall of the device body, a return pipe at the center at the lower part of the three-phase separator penetrates the sedimentation zone and extends into the sludge bed zone, a gas outlet pipe is arranged at the upper part of the gas collection chamber, a waste water inlet pipe is arranged on the side wall at the lower part of the device body, a wall body on the side surface at the lower part of the three-phase separator is shaped like a trumpet with a downward opening, a baffle plate is arranged on the inner wall of the device body at the lower part of the sedimentation zone, an overflow effluent weir is arranged on the inner wall of the device body at the upper part of the sedimentation zone, and a water outlet pipe is arranged on the vertical side wall of the device body above the overflow effluent weir. The internal circulation type up-flow anaerobic sludge bed reactor does not need the external power and is low in cost, and stable and reliable for operation.

Description

A kind of internal circulation upflow anaerobic sludge blanket reactor

One, technical field

The utility model relates to high concentrated organic wastewater anaerobic treatment equipment, particularly a kind of internal circulation upflow anaerobic sludge blanket reactor.

Two, background technology

Since the up flow anaerobic sludge blanket reactor seventies in 20th century (UASB) utility model is used,, improved the processing power of reactor greatly because it has made full use of the good settling property of granule sludge and the centrifugation of high effective three phase separator.But along with popularizing of its application, also exposed many its inherent weakness, as fluctuation of service, treatment effect is not ideal enough etc.

At present, on the basis of traditional up flow anaerobic sludge blanket reactor, mainly contain two kinds of forms by the improvement that increases Recycle design, a kind of is traditional outer circulation type UASB reactor, it is to overflow the mill weir circulation on triphase separator top, a kind of is modified version outer circulation type UASB reactor, and it is to establish the recirculated water intake on top, suspension zone to get mixed solution, confluxes by circulation line and stoste suction culvert.More than two kinds of reactors all belong to outer circulation type UASB reactor, the triphase separator that traditional outer circulation type UASB reactor exists top is excessive, go out the high shortcoming of water suspension, though modified version outer circulation type UASB reactor has improved the shortcoming of first kind of outer circulation type UASB reactor to a certain extent, but the mixed solution outer loop needs additionaling power, has increased running cost.

Three, utility model content

At above-mentioned situation, for overcoming the prior art defective, the purpose of the utility model is exactly in the advantage that keeps on traditional UASB structure of reactor, simultaneously, the utility model has designed a kind of internal circulation upflow anaerobic sludge blanket reactor, and the triphase separator that can effectively solve top is excessive, and it is higher to go out water suspension, need additionaling power, the problem that running cost increases.

The technical scheme that the utility model solves is, comprise body and triphase separator, the bottom is the Sludge Bed district in the body, it above the Sludge Bed district suspension zone, the triphase separator that body is stretched out on top is housed above the center, suspension zone, be three-phase separation area below the collection chamber in the triphase separator, constitute the settling region between triphase separator outside above the suspension zone and body inwall, the return line of triphase separator lower central passes the suspension zone, stretch into the Sludge Bed district, collection chamber top has gas to go out pipe, the waste water inlet pipe is arranged on the lower sides of body, the wall body of triphase separator lower side is horn-like that Open Side Down, with constitute the runner that is communicated with top, suspension zone between the funnelform wall body of return line upper end, there is baffle plate the bottom, settling region on the body inwall, the runner that is communicated with formation settling region between the triphase separator outer wall, top, settling region overflows mill weir on the body inwall, overflowing on the body vertical side walls above the mill weir has rising pipe.

The utility model novel structure uniqueness need not additionaling power, realizes the internal recycling of mixed solution, and cost is low, and range of application is big, and is stable, reliable, high efficiency, and result of use is good.

Four, description of drawings

Accompanying drawing is a structural profile front view of the present utility model.

Five, embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.

Shown in accompanying drawing, the utility model is to comprise body and triphase separator, the bottom is Sludge Bed district 2 in the body 1, above the Sludge Bed district 2 is suspension zone 3, the triphase separator 12 that stretches out body in top is housed above 3 centers, suspension zone, be three-phase separation area 4 below the collection chamber 5 in the triphase separator 12, constitute settling region 6 between triphase separator outside above the suspension zone 3 and body inwall, the return line 10 of triphase separator 12 lower central passes suspension zone 3, stretch into Sludge Bed district 2, collection chamber 5 tops have gas to go out pipe 8, waste water inlet pipe 11 is arranged on the lower sides of body 1, the wall body of triphase separator lower side is horn-like that Open Side Down, with constitute the runner that is communicated with top, suspension zone between the funnelform wall body of return line 10 upper ends, baffle plate 13 is arranged on the body inwall at 6 bottoms, settling region, the runner that is communicated with formation settling region between the triphase separator outer wall, top, settling region overflows mill weir 7 on the body inwall, overflowing on the body vertical side walls above the mill weir 7 has rising pipe 9.

In order to guarantee result of use, the ramp of said baffle plate 13 is parallel with the funnel-form inclined-plane of return line 10 upper ends, guarantees that runner is unimpeded; Constitute the runner of threeway between the horn-like outer wall of said baffle plate 13 and triphase separator and return line 10 upper end hopper walls, guarantee the three phase separation of sewage.

Show by above-mentioned situation; the utility model be for the triphase separator that overcomes the top that outer circulation type (UASB) reactor exists excessive; it is higher to go out water suspension; need additionaling power; the shortcoming that running cost increases; and a kind of novel inner-loop reactor of design; both kept traditional structural advantage; novelty has designed the new texture that result of use is better than traditional inner-loop reactor again; be different from traditional UASB reactor in itself; this internal-circulation type UASB reactor body is divided into the mud district from the bottom up; suspension zone and three-phase separation area; the circulation line of outer circulation type UASB reactor is arranged on the reactor outside; provide power by recycle pump; realize outer loop; and this novel inner-loop reactor; in three-phase separation area (4) bottom return line 10 is set; need not recycle pump power is provided; but make full use of the power that the acting of expanding in the biogas uphill process provides, and make three-phase separation area (4) mixed solution be back to reaction zone along return line (10), realize the internal recycling of mixed solution; can obtain higher liquid upflow velocity by internal recycle; the reinforcing mass transfer effect is accelerated mud grading in the reactor, accelerates the granulating of anaerobic sludge.

The utility model is compared with up flow anaerobic sludge blanket reactor in the past, has the following advantages: the power that (1) utilizes the reactor aerogenesis to provide, realized the inner loop of mixed liquor need not additionaling power, and reduce operating cost; (2) mixed liquor rotational flow in reflux is more conducive to realize refluxing, and also can reduce the sludge settling load of three phase separator; (3) reflux by floating zone muddy water, the influent quality that available buffer changes suddenly, big to the accommodation of inlet COD concentration, strong shock resistance has increased the accommodation of up flow anaerobic sludge blanket reactor; (4) improve upflow velocity in the reactor, be easy to cultivate granule sludge.

Claims

1. internal circulation upflow anaerobic sludge blanket reactor, comprise body and triphase separator, it is characterized in that, the interior bottom of body (1) is Sludge Bed district (2), above the Sludge Bed district (2) is suspension zone (3), the triphase separator (12) that stretches out body in top is equipped with in suspension zone (3) above the center, below the interior collection chamber of triphase separator (12) (5) is three-phase separation area (4), constitute settling region (6) between triphase separator outside above the suspension zone (3) and body inwall, the return line (10) of triphase separator (12) lower central passes suspension zone (3), stretch into Sludge Bed district (2), collection chamber (5) top has gas to go out pipe (8), waste water inlet pipe (11) is arranged on the lower sides of body (1), the wall body of triphase separator lower side is horn-like that Open Side Down, with constitute the runner that is communicated with top, suspension zone between the funnelform wall body of return line (10) upper end, baffle plate (13) is arranged on the body inwall at bottom, settling region (6), the runner that is communicated with formation settling region between the triphase separator outer wall, top, settling region overflows mill weir (7) on the body inwall, overflowing on the body vertical side walls above the mill weir (7) has rising pipe (9).

2. internal circulation upflow anaerobic sludge blanket reactor according to claim 1 is characterized in that, the ramp of said baffle plate (13) is parallel with the funnel-form inclined-plane of return line (10) upper end.

3. internal circulation upflow anaerobic sludge blanket reactor according to claim 1 is characterized in that, constitutes the runner of threeway between the horn-like outer wall of said baffle plate (13) and triphase separator and return line (10) upper end hopper walls.