CN211338962U

CN211338962U - Novel anaerobic internal circulation reactor

Info

Publication number: CN211338962U
Application number: CN201921416806.3U
Authority: CN
Inventors: 杨聪
Original assignee: Chengdu Hongzhan Huizhi Technology Co ltd
Current assignee: Chengdu Hongzhan Huizhi Technology Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-08-25
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a novel circulation reactor in anaerobism belongs to anaerobic reactor technical field, has solved the problem that circulation reactor solid-liquid mass transfer efficiency is low in the anaerobism among the prior art, the utility model discloses a reactor shell, reactor shell bottom is connected with the inlet tube, and the delivery port has been seted up on reactor shell upper portion, delivery port department is connected with the outlet pipe, outlet pipe and inlet tube intercommunication install the valve on the outlet pipe, still are connected with the water pump between outlet pipe and the inlet tube, the one end that the inlet tube is located its shell of reflection is connected with the water-locator, the water-locator is the toper shape, and the water-locator surface comprises a plurality of thin slices. The utility model discloses an inside and outside circulation structure and water-locator structure make reactor reaction efficiency high, go out water quality of water better.

Description

Novel anaerobic internal circulation reactor

Technical Field

The utility model belongs to the technical field of anaerobic reactor, concretely relates to novel anaerobism inner loop reactor.

Background

Anaerobic microorganism treatment is an indispensable treatment section in the current high-concentration organic wastewater treatment process, and compared with aerobic biological treatment, the anaerobic microorganism treatment process has the advantages that the energy consumption is low, and simultaneously, biogas can be generated to be used as energy for secondary utilization; and secondly, the anaerobic reaction volume load is high, and the investment for treating the anaerobic reaction of COD with the same quantity is lower, namely COD (chemical oxygen demand).

With the increasing energy crisis since the 60 s of the 20 th century, people have intensified the research on the treatment of organic wastewater by anaerobic digestion, and a batch of modern high-speed anaerobic reactors, namely, second-generation anaerobic reactors, such as anaerobic contact methods, anaerobic filters, Upflow Anaerobic Sludge Blanket (UASB) reactors, and the like, have appeared in succession. After 90 s in the 20 th century, novel anaerobic biological treatment devices, namely 'third generation anaerobic biological reactors', such as granular sludge expanded bed (EGSB) reactors and anaerobic Internal Circulation (IC) reactors, appeared.

Anaerobic Internal Circulation (IC) reactor internal circulation is formed by the 'upflow' and 'downflow' caused by marsh gas based on the principle of gas stripping (without depending on the power of a pump). The internal circulation is driven by the airflow of the reactor, and the strength of the internal circulation is determined by the COD of the inlet water and is regulated by itself: the high intake water COD concentration has higher methane yield, stronger circulating flow and stronger intake water dilution effect.

The disadvantages are three:

firstly, the backflow amount of the mixed liquid is determined by the COD concentration of the inlet water, the backflow amount cannot be adjusted and controlled, and if the backflow amount is too large, the rising speed of the water flow in the bed exceeds the designed value, so that the loss of the top granular sludge is caused; if the reflux quantity is too small, the bottom sludge can not be ensured to be completely in a fluidized state, and the solid-liquid mass transfer efficiency is influenced.

Secondly, if the COD of the inlet water is too high or the waste water with ultrahigh concentration and difficult degradation or toxic substances enters, the effect of refluxing and diluting by the mixed liquid is not obvious, and the microbial activity is greatly inhibited.

Thirdly, the concentration of the return sludge of the mixed liquid is high, which may cause the sludge accumulation at the bottom of the reactor, block the water distribution holes at the bottom and block the water inlet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a:

in order to solve the problem of low solid-liquid mass transfer efficiency of the anaerobic internal circulation reactor in the prior art, a novel anaerobic internal circulation reactor is provided.

The utility model adopts the technical scheme as follows:

the utility model provides a novel anaerobism inner loop reactor, includes the reactor shell, reactor shell bottom is connected with the inlet tube, and the delivery port has been seted up on reactor shell upper portion, its characterized in that, delivery port department is connected with the outlet pipe, outlet pipe and inlet tube intercommunication install the valve on the outlet pipe, still be connected with the water pump between outlet pipe and the inlet tube.

Furthermore, one end of the water inlet pipe, which is positioned in the shell of the water inlet pipe, is connected with a water distributor, the water distributor is in a cone shape, and the surface of the water distributor consists of a plurality of thin slices.

Furthermore, a gas collecting pipe and a methane lifting pipe are arranged in the reactor shell, the gas collecting pipe and the upper end of the methane lifting pipe are both arranged along the vertical direction, and the lower ends of the gas collecting pipe and the methane lifting pipe are both connected with a gas collecting hood.

Furthermore, an inner return pipe arranged in the vertical direction is installed in the reactor shell, the upper end of the inner return pipe is connected with a gas-liquid separator positioned above the reactor shell, and the upper ends of the gas collecting pipe and the methane lifting pipe both extend into the gas-liquid separator.

Furthermore, a first reaction chamber is arranged below the methane lifting pipe, and a second reaction chamber is arranged below the gas collecting pipe.

The working principle of the utility model is as follows:

(1) the external circulation water outlet backflow structure:

the function uses the pump as power, adjusts the water outlet circulation amount through frequency conversion, or manually adjusts the water inlet and outlet valves at two ends of the pump, and realizes that the external circulation and the internal circulation jointly control the circulating water amount.

The specific control principle is as follows: when the COD concentration of the inlet water is high, the biogas yield is high, the internal circulation is enhanced, the frequency of a water outlet circulating pump can be reduced, or the opening degree of a valve is reduced, so that the external circulating water quantity is reduced; on the contrary, when the COD concentration of the inlet water is low, the biogas yield is low, the internal circulation is weakened, and at the moment, the frequency of the outlet water circulating pump can be increased, or the opening degree of a valve is increased, so that the external circulating water quantity is increased. Meanwhile, when the toxic substances in the water are higher, the frequency of the water outlet circulating pump can be improved or the opening of the valve can be increased, the water outlet circulating amount is increased, the water outlet reflux is quicker and more obvious than the internal circulation to dilute the toxic substances in the water, and the inhibition of the toxic substances to microorganisms can be quickly reduced.

(2) Cover-type water-locator structure:

the cover-type water distributor is adopted to realize the functions of water distribution and hydraulic stirring.

The working principle is as follows: the water distributor is assembled by a large number of stainless steel sheets, the water distributor is uniform in rotary water distribution, free of dead angles, capable of greatly reducing the frequency of blocking of water inlet holes, smooth in water inlet, and capable of enabling waste water and granular sludge to be fully contacted and mixed, so that the operation stability is high, and the water outlet quality is good.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses an establish the extrinsic cycle and go out water reflux structure, make the reactor can adjust the backward flow volume through pump and valve, overcome prior art in the backward flow volume can't adjust, lead to the problem that the backward flow volume is too big or the undersize seriously influences solid-liquid mass transfer efficiency, effectively improved the stability of reactor operation, can effectively swiftly dilute the noxious material simultaneously, reduce the suppression of noxious material to the microorganism, make out water quality of water effect better.

2. The utility model discloses a bell-type water-locator, the messenger distributes the flow of each point the same, the inlet tube and join in marriage the difficult jam in water hole, very big reduction the frequency that the inlet hole blockked up, it is unimpededly unobstructed to intake, the needs of sludge blanket water conservancy stirring have been satisfied, guarantee that the organic matter of intaking mixes rapidly with mud, the local acidizing phenomenon that produces has prevented simultaneously, make waste water and granular sludge fully contact the mixture, sludge blanket in the reactor does not have the short-term current phenomenon, the start-up time is short, have extremely strong resistance to quality of water and load sudden change, impact resistance is high, and the stability is strong, further promoted a water quality of water effect.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a block diagram of the present invention;

figure 2 is a top view of the water distributor of figure 1.

Description of reference numerals:

1-a gas-liquid separator, 2-a water outlet pipe, 3-a water inlet pipe, 4-a gas collecting pipe, 5-a reactor shell, 6-a gas collecting hood, 7-an internal reflux pipe, 8-a water distributor, 9-a biogas lifting pipe, 10-a first reaction chamber, 11-a second reaction chamber and 12-a water pump.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 and 2.

Example 1

The embodiment as a basis:

the utility model provides a novel anaerobism inner loop reactor, includes reactor shell 5, and reactor shell 5 bottom is connected with inlet tube 3, and the delivery port has been seted up on reactor shell 5 upper portion, and its characterized in that, delivery port department are connected with outlet pipe 2, and outlet pipe 2 and inlet tube 3 intercommunication install the valve on the outlet pipe 2, still are connected with water pump 12 between outlet pipe 2 and the inlet tube 3.

The utility model discloses an establish the extrinsic cycle and go out water reflux structure, make the reactor can adjust the backward flow volume through pump and valve, overcome prior art in the backward flow volume can't adjust, lead to the problem that the backward flow volume is too big or the undersize seriously influences solid-liquid mass transfer efficiency, effectively improved the stability of reactor operation, can effectively swiftly dilute the noxious material simultaneously, reduce the suppression of noxious material to the microorganism, make out water quality of water effect better.

Example 2

In this embodiment, the water distributor 8 is connected to one end of the water inlet pipe 3 located inside the housing, the water distributor 8 is in the shape of a cone, and the surface of the water distributor 8 is composed of a plurality of sheets.

The utility model discloses a bell-type water-locator 8, make the flow that distributes the each point the same, inlet tube 3 and join in marriage the difficult jam in water hole, very big reduction the frequency that the inlet hole blockked up, it is unimpededly unobstructed to intake, the needs of sludge blanket water conservancy stirring have been satisfied, guarantee that the organic matter of intaking mixes rapidly with mud, the local acidizing phenomenon that produces has been prevented simultaneously, make waste water and granular sludge fully contact the mixture, sludge blanket in the reactor does not have the short-term current phenomenon, the start-up time is short, have extremely strong resistance to quality of water and load sudden change, impact resistance is high, and the stability is strong, further promoted play water quality of water effect.

Example 3

In this embodiment, the gas collecting pipe 4 and the biogas riser 9 are installed in the reactor housing 5, the gas collecting pipe 4 and the upper end of the biogas riser 9 are both installed along the vertical direction, and the gas collecting pipe 4 and the lower end of the biogas riser 9 are both connected with the gas collecting hood 6.

Furthermore, an inner return pipe 7 arranged in the vertical direction is installed in the reactor shell 5, the upper end of the inner return pipe 7 is connected with a gas-liquid separator 1 positioned above the reactor shell 5, the upper ends of the gas collecting pipe 4 and the methane lifting pipe 9 both extend into the gas-liquid separator 1, a first reaction chamber 10 is arranged below the methane lifting pipe 9, and a second reaction chamber 11 is arranged below the gas collecting pipe 4.

The utility model discloses the system is formed by the functional part combination of four differences: namely a mixing area, an expansion area, a fine processing area and a circulating water distribution part.

A mixing area: at the bottom of the reactor, the entering wastewater, the mixed liquid of internal gas circulation reflux and the effluent of external circulation reflux are effectively mixed with the bottom granular sludge, so that the effective dilution and mixing effect on the influent water is realized;

sludge expansion bed: i.e. the first reaction chamber, is formed by an expanded bed containing a high concentration of granular sludge. The expansion or fluidization of the bed is controlled by the inflow and outflow cycles and the upward flow rate of the produced biogas. The effective contact of the waste water and the granular sludge ensures that the sludge has high activity and can obtain high organic load and conversion efficiency;

a fine processing area: namely the second reaction chamber, because the first reaction chamber obtains lower sludge load rate, long hydraulic retention time and the flow state characteristic of plug flow after treating the wastewater, effective fine treatment is generated, and the biodegradable COD is almost completely removed.

A circulating system: an external circulation and an internal circulation. The internal circulation is determined by the gas stripping principle and the reflux quantity of the mixed liquid is determined by the gas production rate, so that the reactor is self-regulated. The external circulation is that the circulating water quantity is controlled by an external circulating pump to enter the system at the bottom of the reactor, so that additional disturbance is generated at the part of the expanded bed, and the solid-liquid mass transfer efficiency of the system is maintained at a higher level.

A water distribution system: the water distribution system is the key configuration of the anaerobic reactor, can ensure that the sludge is fully contacted with the inlet water, and can furthest utilize the volume of the reactor.

Preferably, the manual valve in the external circulation water outlet backflow structure can be replaced by an electric valve or a pneumatic valve, and the material of the cover type water distributor can be replaced by other corrosion-resistant and wear-resistant materials.

Claims

1. The utility model provides a novel anaerobism inner loop reactor, includes reactor shell (5), reactor shell (5) bottom is connected with inlet tube (3), and the delivery port has been seted up on reactor shell (5) upper portion, its characterized in that, delivery port department is connected with outlet pipe (2), outlet pipe (2) and inlet tube (3) intercommunication install the valve on outlet pipe (2), still are connected with water pump (12) between outlet pipe (2) and inlet tube (3).

2. The new anaerobic internal circulation reactor according to claim 1, characterized in that the water distributor (8) is connected to the end of the inlet pipe (3) that is inside the shell, the water distributor (8) is cone-shaped, and the surface of the water distributor (8) is composed of a plurality of thin slices.

3. The novel anaerobic internal circulation reactor according to claim 1, wherein a gas collecting pipe (4) and a methane lifting pipe (9) are installed in the reactor shell (5), the upper ends of the gas collecting pipe (4) and the methane lifting pipe (9) are installed along the vertical direction, and the lower ends of the gas collecting pipe (4) and the methane lifting pipe (9) are connected with a gas collecting hood (6).

4. The novel anaerobic internal circulation reactor according to claim 3, characterized in that an internal return pipe (7) arranged in the vertical direction is installed in the reactor shell (5), the upper end of the internal return pipe (7) is connected with a gas-liquid separator (1) positioned above the reactor shell (5), and the upper ends of the gas collecting pipe (4) and the biogas riser (9) both extend into the gas-liquid separator (1).

5. A novel anaerobic internal circulation reactor according to claim 3, characterized in that a first reaction chamber (10) is arranged below the biogas riser (9) and a second reaction chamber (11) is arranged below the gas header (4).