CN105859085A - Cone-shaped anaerobic reactor - Google Patents

Abstract

The invention discloses a cone-shaped anaerobic reactor. The cone-shaped anaerobic reactor is composed of a feed system, a reactor, a return-flow system and an integrated double membrane gas holder; the cone-shaped anaerobic reactor is characterized in that a reactor body is shaped like a cone; the return-flow system is composed of a floating bucket, a liquid receiver, a diversion box and a return-flow pump, the floating bucket floats on the liquid level, the liquid receiver is hung on the floating bucket and located on a proper position below the liquid level, the division box is a closed box body fixed on the periphery of the liquid receiver, and an outlet of the return-flow pump is located below the reactor.

Description

conical anaerobic reactor

technical field

The invention relates to an anaerobic reactor, in particular to a reactor for anaerobic digestion of excess sludge.

Background technique

Anaerobic digestion of excess sludge can obtain biogas, stabilize sludge, and reduce solids in sludge. It is an important process unit in sewage treatment plants. Commonly used reactors for anaerobic digestion of excess sludge include cylindrical tanks and oval tanks, which require high civil engineering costs, which makes many sewage treatment plants have to give up the treatment unit of sludge digestion. From the consideration of saving civil engineering costs, this patent proposes the idea of a conical pool.

Contents of the invention

The technical problem to be solved by the present invention is to provide a conical anaerobic reactor, which is composed of a feed system, a reactor, a reflux system and an integrated double-membrane gas tank. It is characterized in that the main body of the reactor is conical; The return system is composed of a floating bucket, a liquid collector, a diversion frame, and a return pump. The floating barrel floats on the liquid surface. The frame is a closed frame fixed around the liquid collector, and the outlet of the reflux pump is located at the lower part of the reactor;

Preferably, a conical anaerobic reactor is characterized in that the main body of the reactor is a truncated cone.

Preferably, a conical anaerobic reactor is characterized in that the main body of the reactor is conical and combined with a column.

Preferably, a conical anaerobic reactor is characterized in that the main body of the reactor is a frustum of a cone and is combined with a column.

Preferably, a conical anaerobic reactor is characterized in that the side wall of the main body of the reactor is an outer inclined wall.

Preferably, a conical anaerobic reactor is characterized in that the side wall of the main body of the reactor is an outer inclined wall, and the upper part of the inclined wall has a straight wall.

Compared with the prior art, the beneficial effect of the conical anaerobic reactor of the present invention is that a conical pool can be dug on the ground to prevent seepage, replace the steel-concrete structure, and save civil engineering costs.

Description of drawings

Fig. 1 is a schematic structural view of a conical anaerobic reactor in Example 1 of the present invention.

Fig. 2 is a schematic structural view of a conical anaerobic reactor in Example 2 of the present invention.

detailed description

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment one:

A kind of conical anaerobic reactor as shown in Figure 1, comprises: feeding system 1, reactor 2, reflux system 3 and integrated double film gas cabinet 4, and reactor 2 is conical; Composed of barrel 3-1, liquid collector 3-2, diversion frame 3-3, and return pump 3-4, the floating barrel 3-1 floats on the liquid surface, and the liquid collector 3-2 is hung on the floating barrel 3-1 and Located at an appropriate position below the liquid surface, the guide frame 3-3 is fixed around the liquid collector and forms a closed frame body, and the outlet of the reflux pump 3-4 is located at the lower part of the reactor.

Below the working process of embodiment one is briefly introduced as follows:

The remaining sludge enters the bottom of the reactor 2 from the feed system 1, flows upward and undergoes anaerobic digestion. In order to make the sludge in the reactor 2 well mixed, the reflux system 3 is opened.

Although this patent is designed from the idea of saving civil engineering costs, the conical structure itself has brought two advantages to sludge digestion: first, from the bottom to the top, the upward flow velocity of the sludge decreases, and the sludge particles are easy to sink in The lower part of the reactor, so that the hydraulic retention time and the solid retention time are separated, so that the sludge particles can be better digested; the second is that the liquid collector 3-2 continuously pumps the upper liquid to the lower layer, effectively preventing the scum Crust.

Embodiment 2: Embodiment 2 is a modification of Embodiment 1, except that the reactor 2 is a combination of cone and column, its overall structure and working principle are exactly the same as Embodiment 1.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the spirit and protection scope of the present invention, and such modifications or equivalent replacements should also be deemed to fall within the protection scope of the present invention.

Claims (6)

1. a conical anaerobic reactor is made up of feed system, reactor, reflux system and integrated double membrane gas tank, it is characterized in that, described reactor main body is conical; Described reflux system consists of floating barrel , a liquid collector, a diversion frame, and a return pump. The floating barrel floats on the liquid surface. The liquid collector is hung on the floating barrel and located at an appropriate position below the liquid surface. The surrounding closed frame, the outlet of the reflux pump is located at the lower part of the reactor. 2. A conical anaerobic reactor according to claim 1, characterized in that, the reactor main body is a truncated cone. 3. A conical anaerobic reactor according to claim 1, characterized in that, the main body of the reactor is conical and forms a combination with a column. 4. A conical anaerobic reactor according to claim 1, characterized in that, the main body of the reactor is a frustum of a cone and forms a combination with a column. 5. A conical anaerobic reactor according to claim 1, characterized in that the side wall of the reactor main body is an outer inclined wall. 6. A conical anaerobic reactor according to claim 1, characterized in that, the side wall of the reactor main body is an outer inclined wall, and the upper part of the inclined wall has a straight wall.