CN208856989U - A kind of anaerobic reaction-pot - Google Patents

Abstract

The utility model discloses a kind of anaerobic reaction-pot, the partition that longitudal section is in nearly " W " shape is distributed in the lower part of the tank body, which is separated into circle water inlet distribution cavity and a circle sand collecting cavity for the lower part of the tank body；The water inlet distribution cavity is connected to water inlet manifold；Several water distribution branch pipes are also distributed on the tank body；It is distributed on the intracorporal water distribution branch pipe of the tank and several water distributors is also distributed with；The water distributor is distributed in the top of the sand collecting cavity；The water distribution branch pipe is connected to the water inlet distribution cavity；The lower part of the sand collecting cavity is communicated with several sand discharge pipes, and sand discharge pipe outer end is stretched out outside the tank body；Valve is also distributed on the sand discharge pipe, the top of the tank body is additionally provided with position can circulator.The utility model water distribution is uniform, reaction effect is good, be not easy blocking, easily investigation, unimpeded are efficiently, desilting collection sand effect is good, sand discharge is easy, overall operation is stable for blocking.

Description

A kind of anaerobic reaction-pot

Technical field

The utility model relates to technical field of sewage treatment equipment, and in particular to a kind of anaerobic reaction-pot.

Background technique

With the rapid hair of the chemical industries such as the modern industry, especially organic chemical industry, petrochemical industry, dyestuff, medicine, pesticide Exhibition, various organic wastewater with difficult degradation thereby are increasing, these waste water generally have that pollutant concentration is high, suspension content is big, toxicity Greatly, the feature of biodegradability difference, serious polluted-water environment are detrimental to health.

High concentrated organic wastewater is difficult to deal with one big industrial pollution source, and COD concentration is high.Domestic high concentration has at present Machine wastewater treatment can apply to Anaerobic Methods in Treating, and the cloth in anaerobic reactor is waterborne, conventional through-hole water distribution, common branch's cloth It is uneven to there is water distribution in the water distribution manners such as water, anaerobic reactor there are dead angle, anaerobic sludge easily the problems such as dead angle area is accumulated, It is easy to cause water distributor to block, poor processing effect.And traditional water distribution manner is not provided with preventing clogging up device, once there is water distribution Device blocking, anaerobic reactor will be unable to operate normally, this technical problem constrains the normal, stable, up to standard of Sewage Disposal Operation.Meanwhile anaerobic sludge is also constantly absorbing the inorganic ions such as Ca2+, Ma2+, Ca2+, Ma2+ while degrading COD Equal inorganic ions concentration is higher, then is absorbed more.This leads to anaerobic sludge calcification, so that the inorganic constituents of sludge is more next It is higher, gradually it is transformed into without activity, the calcification sludge of degradation cannot be played to COD, specific gravity is larger, is finally piled up in Anaerobic reactor bottom.Currently, in domestic anaerobic reactor, all accomplish more than ten even more than 20 meters of diameters, but all do not have Good sand removing device is designed, so that the silt particle in reactor can not be normally completely exhausted out, this is in major diameter anaerobic reactor Problem seems especially prominent.When reactor deposits excessive silt particle, water distributor blocking will cause, anaerobic reactor will be unable to just Often operation.Meanwhile generally entering its optimum COD range of the sewage of anaerobic reactor is 1000~5000mg/L, works as water COD it is excessively high when need to adjust, be at present usually that the anaerobic digestion solution for being back to pre-acidified pond drawn back into anaerobic reactor again, To play the role of diluting influent COD, adjust water inlet PH.Anaerobic reactor anaerobic effluent, which is back to pre-acidified pond, will occupy pre-sour The volume for changing pond, reduces the residence time of waste water, is unfavorable for anaerobic digestion；On the other hand, after recirculation water enters pre-acidified pond, It need to be promoted to anaerobic reactor again, cause great energy waste, operating cost is higher.Meanwhile regurgitant volume control is not Accurate also not flexible, energy consumption is big, at high cost.

Therefore, the prior art is broken through, it is significant to stably reaching standard discharge and environmental protection.

The disclosure of background above technology contents is only used for the design and technical solution that auxiliary understands the utility model, not The prior art for necessarily belonging to present patent application shows above content in the applying date of present patent application in no tangible proof In the case where having disclosed, above-mentioned background technique should not be taken to the novelty and creativeness of evaluation the application.

Utility model content

The utility model provide in view of the above technical problems a kind of water distribution is uniform, reaction effect is good, be not easy blocking, desilting Collect the anaerobic reaction-pot that husky effect is good, sand discharge is easy, overall operation is stable.

The utility model adopts the following technical solution to achieve the above object:

The partition that longitudal section is in nearly " W " shape is distributed in a kind of anaerobic reaction-pot, including tank body, the lower part of the tank body, should The lower part of the tank body is separated into circle water inlet distribution cavity and a circle sand collecting cavity by partition；The total water inlet of water inlet distribution cavity connection Pipe；Several water distribution branch pipes are also distributed on the tank body；Several water distribution branch pipes are distributed in together for one week along the tank body One plane is simultaneously inserted into the tank interior from the outside to the core and is fixed, and is distributed on the intracorporal water distribution branch pipe of the tank and is also distributed There are several water distributors；The water distributor is distributed in the top of the sand collecting cavity；The water distribution branch pipe and the water inlet distribution cavity connect It is logical；The lower part of the sand collecting cavity is communicated with several sand discharge pipes, and sand discharge pipe outer end is stretched out outside the tank body；The sand discharge Valve is also distributed on pipe；The top of the tank body is additionally provided with position energy circulator, and institute's rheme energy circulator is a liquid distributor, Its inlet is connected to the liquid outlet of the tank body；The lower part of institute's rheme energy circulator is equipped with leakage fluid dram and circulation fluid exports；Institute Circulation fluid outlet is stated to be connected to the water inlet manifold by circulating line；Circulating pump is also distributed on the circulating line.

Further, the closed at one end of the intracorporal water distribution branch pipe of the tank is penetrated.

It further, further include several water inlet distribution pipes, described several water inlet distribution pipe one end and the water inlet point It is connected to chamber, and several water inlet distribution pipes are enclosed along the water inlet distribution cavity peripheral distribution one；It is distributed in outside the tank body Back flush valves are also incorporated on the water distribution branch pipe in portion, the other end of the water inlet distribution pipe is connected with the water distribution branch pipe It is logical, and be connected between the water distributor and the back flush valves；Positive flushing valve is also incorporated in the water inlet distribution pipe.

It further, further include gas-liquid separator, the gas-liquid separator is incorporated in the top of the tank.

Further, the intracorporal location mid-shaft of the tank is also distributed with axis and follows flow tube, the axis follow flow tube upper end with The liquid outlet of the gas-liquid separator is connected to；The lower part that the axis follows flow tube offers one and irises out liquid aperture, and the liquid out is small Pore size distribution is below the water distribution branch pipe.

Further, one end of several water distribution branch pipes is incorporated in the axis and follows on flow tube outer wall, the axis It follows flow tube and provides support for the water distribution branch pipe.

Further, the water distributor is cyclone water distributor, and univesral distribution is and adjacent in the side of the water distribution branch pipe The cyclone water distributor being distributed on two water distribution branch pipes is alternately distributed.

Further, second level valve is additionally provided on the water distribution branch pipe, the second level valve is distributed in the water inlet distribution The tank body side of pipe and the water distribution branch pipe junction.

Further, flowmeter is distributed on the circulating line, the circulating pump is variable frequency pump, realizes that flow is adjustable.

Further, several sand discharge pipes enclose even cloth along the sand collecting cavity one.

The utility model compared with prior art the utility model has the advantages that

1, the present invention is separated by being equipped with " W " type partition in tank base into water distribution cavity and sand collecting cavity；By being equipped with Water inlet distribution cavity, can be to the expansion reaction offer effectively buffering in water inlet manifold and tank body, and passes through and be arranged along one week The water inlet distribution pipe of even cloth and combination are equipped with water distribution branch pipe, it can be ensured that the stabilization of every water distribution branch pipe hydraulic pressure realizes 360 ° Without dead angle and water distribution uniformity, waste water reaction effect is significantly improved；The sand collecting cavity longitudal section that the present invention is equipped with is in nearly " V " shape, can 360 ° of high-efficiency accumulation calcification sludge, and promote calcification sludge settling, it effectively prevent the impurity such as calcification sludge in the water distribution of water distributor The lower rolling of concussion, influences fluidized-bed reaction effect, is obviously improved W-response effect；By the sand discharge pipe that is equipped with can in time by The sludge of precipitating is discharged, and prevents sludge from covering water distributor, effectively reduces the plugging rate of water distributor, lifting means overall operation it is steady Qualitative and duration；By the way that a circle sand discharge pipe is distributed with, 360 ° are realized without dead angle sand discharge, sand discharge is easy to operate and thorough；Meanwhile The present invention by be equipped with position can circulator, circular flow can be distributed and disappear with anaerobism by not needing to increase any automatic control equipment Change liquid discharge rate, and can preferentially meet circular flow.Circulation pipe is equipped with flowmeter, and circular flow can be set as needed；It follows The variable frequency pump that endless tube is equipped with, it is flexibly adjustable to be able to achieve flow, accurate to control.Ensure anaerobic digestion solution COD value and PH in tank body The stability of value, is obviously improved reaction effect.Operation of the present invention is quick, easy, can successfully manage the emergency events such as water quality exception, And realized and recycled with low-lift pump, power consumption is reduced, is increased economic efficiency.

2, after a shutdown, the intracorporal mud mixture of tank can stop flowing/floating, and then sludge settling to anaerobic jar, often It can therefore block, the restarting of traditional equipment can all be affected；The present invention passes through the row of opening by being equipped with sand discharge pipe Effectively the calcification sludge of sedimentation can be discharged for sand tube valve, can be rinsed under big flow and to cyclone water distributor, realize The dredging of cyclone water distributor；Simultaneously can also by being passed through high pressure water repeatedly into sand discharge pipe, to the intracorporal calcification sludge of tank into Row rush it is dilute, improve calcification sludge mobility, realize dredging quickly and efficiently.Therefore, the present invention can effectively solve the problem that because stopping Occur sedimentation after machine, block the problem of can not normally restarting.

3, by being equipped with cyclone water distributor and being alternately distributed, it can be realized the cloth water surface in eddy flow shape, be obviously improved fluidized bed Indoor particle sludge and the effective contact area of sewage are reacted, fluidized bed sludge bulking degree is improved, promotes muddy water mixing sufficiently, improves Reaction effect.

4, dredge stifled composite structure in conjunction with being equipped with the anti-blocking of several water distribution branch pipes+several water inlet distribution pipe, can first pass through into The large capacity of water distribution cavity buffers, and then branches out several anti-blocking modes for dredging stifled composite structure alone, substantially reduces whole set Standby plugging rate.It is all sealing based on whole equipment pipeline and opaque in equipment operation, while equipment volume is huge, one As height also in 20m or more, therefore existing equipment is difficult that rapid identification can be carried out to blocking position, can only generally stop complete machine Pipeline removes lookup one by one for operation；The present invention can close positive flushing valve by control and open back flush valves, check cloth The reflux situation of water branch pipe；Backwash valve is opened by control and turns off second level valve behind the door, checks the outflow into water distribution pipe Situation, can quickly accurately find out at which/which section block.

5, when blocking, generally also only one of them or several anti-blocking thin stifled composite structures go out the present invention It now blocks, but equipment is unlikely to occur that overall operation is not normal, and use is more efficient, more stable；It is traditional simultaneously when dredging blocking Equipment can only generally be run by arrestment, and accessed tap water from water inlet manifold and be rinsed, but be based on water inlet manifold Place be typically all can by water pump pressurize, therefore, general hydraulic pressure be it is constant, higher hydraulic pressure tap water can not be obtained, if set Standby to be equipped with more water distribution branch pipes, most tap water can also be flowed out by unplugged pipeline, just will appear point substantially blocked Bye-pass can not obtain enough hydraulic pressure and be dredged, and dredge that efficiency is very low, and effect is poor；And the present invention can not need to stop setting It is standby operate normally under, dredged in several ways, it is simple and fast, high-efficient, effect is good:

(1) composite structure is blocked up for anti-blocking dredge of blocking, directly its positive flushing valve can be closed, then be opened Its back flush valves realizes recoil by more than 20 meters of entire tank body high of water internal pressures, real to water distribution branch pipe and/or cyclone water distributor It now dredges stifled；If above-mentioned cannot achieve is dredged stifled, its positive flushing valve can also be closed by control, open its back flush valves, The connecting flange end that high pressure tap water is connected to its water distribution branch pipe, can be realized the block clearing of water distribution branch pipe and/or cyclone water distributor Operation；Or by closing the positive flushing valve of other nonclogging water inlet distribution pipes, then the hydraulic pressure of water inlet manifold all collects In blocking it is described it is anti-blocking dredge stifled composite structure, realize the block clearing of water distribution branch pipe and/or cyclone water distributor.

(2) when carrying out above-mentioned part purge operation to water distribution branch pipe and/or cyclone water distributor, the sand discharge pipe can be made For outlet pipe, the valve of the more sand discharge pipes is opened, tank interior is reduced to the reverse water pressure of cyclone water distributor, makes flowing water Efficiency is dredged in more smooth raising；It can certainly be using sand discharge pipe as reversed water receiving pipe, by connecting high pressure originally to sand discharge pipe Water simultaneously closes the positive flushing valve of other nonclogging water inlet distribution pipes, and the pipeline or cyclone water distributor to blocking carry out reversed Purge operation.

(3) composite structure is blocked up for anti-blocking dredge of blocking, its secondary valve door can be closed by control, opens recoil Valve is washed, high pressure tap water is connected to the connecting flange end of corresponding water distribution branch pipe, realizes the dredging at water inlet distribution pipe；Or By closing the positive flushing valve of other nonclogging water inlet distribution pipes, and the anti-blocking thin stifled composite structure blocked then will Its back flush valves is opened, and closes its secondary valve door, using the hydraulic pressure of the water inlet distribution cavity realize water inlet distribution pipe from So dredging.

6, flow tube is followed equipped with axis by combining, the anaerobic digestion solution automatic cycle that can go out gas-liquid separator separates is defeated It is sent to tank base, is obviously improved the reaction efficiency of reactor tank, enhances Anaerobic Treatment effect, especially processing high concentrated organic wastewater Effect is more significant.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of 1 the utility model of specific embodiment；

Fig. 2 is the structural schematic diagram of 2 the utility model of specific embodiment.

Specific embodiment

Specific embodiment 1

Specific embodiment 1

As shown in Figure 1, longitudal section is distributed in close in a kind of anaerobic reaction-pot, including tank body 10, the lower part of the tank body 10 The lower part of the tank body 10 is separated into circle water inlet distribution cavity 3 and a circle sand collecting cavity 15 by the partition of " W " shape, the partition；It is described Distribution cavity 3 of intaking is connected to water inlet manifold 1；Ten water inlet distribution pipes 2 are also communicated in the water inlet distribution cavity 3, certainly, water inlet point The quantity of piping 2 is not limited to that, be can according to need and is carried out selection distribution, and the water inlet distribution pipe 2 is along the water inlet point A circle is uniformly distributed with 3 periphery of chamber；Positive flushing valve 4 is also incorporated in the water inlet distribution pipe 2；It is also distributed on the tank body 10 There are ten water distribution branch pipes 13；The water distribution branch pipe 13 is distributed in same plane in 10 1 weeks along the tank body and is inserted into institute from the outside to the core It states and is fixed inside tank body 10, the position of distribution is higher than the water inlet distribution pipe 2；The cloth in the tank body 10 is penetrated simultaneously Water branch pipe 13 it is closed at one end, and the side on each water distribution branch pipe 13 being distributed in the tank body 10 is also respectively distributed There are four cyclone water distributor 7, the cyclone water distributor 7 is distributed in the top of the sand collecting cavity 15；Certainly, cyclone water distributor 7 Quantity, which can according to need, to be increased；And the cyclone water distributor 7 being distributed on two adjacent water distribution branch pipes 13 is handed over For being in staggered distribution, certain each its installation direction of the cyclone water distributor can not also be identical, primarily to it is equal to improve water distribution Even property；It is distributed on the water distribution branch pipe 13 outside the tank body 10 and also incorporates back flush valves 6；The water inlet distribution pipe 2 other end is connected with the water distribution branch pipe 13, and is connected between the cyclone water distributor 7 and the back flush valves 6. It certainly, further include gas-liquid separator 11, certain gas-liquid separator 11 can be equipped with multiple；The gas-liquid separator 11 combines At the top of the tank body 10, the air inlet of the gas-liquid separator 11 is connected to the gas outlet at 10 top of tank body.It is described Location mid-shaft in tank body 10 is also distributed with axis and follows flow tube 9, and the axis follows 9 upper end of flow tube and the gas-liquid separator 11 Liquid outlet is connected, which is higher than the liquid outlet 12 of tank body 10；The lower part that the axis follows flow tube 9 offers a circle Liquid aperture out, the liquid aperture out are distributed in the close beneath of the water distribution branch pipe 13.One end of the water distribution branch pipe 13 combines On the outer wall that the axis follows flow tube 9, the axis follows flow tube 9 and is that the water distribution branch pipe 13 provides support, and its other end It is combined with connecting flange 5, for connecting high pressure running water pipe when dredge stifled operation or when carrying out dredging stifled for connecting Scrap concrete pipe.The lower part of the sand collecting cavity 15 is communicated with 10 sand discharge pipes 16, and the sand discharge pipe 16 is along the sand collecting cavity 15 The one even cloth of circle；16 outer end of sand discharge pipe is stretched out outside the tank body 10；The sand discharge pipe being distributed in outside the tank body 10 Valve 17 is also distributed on 16.The top of the tank body 10 is additionally provided with position energy circulator 18, and institute's rheme energy circulator 18 is a liquid Body distributor, inlet are connected to the liquid outlet 12 of the tank body；The lower part of institute's rheme energy circulator 18 is equipped with leakage fluid dram 19 It is exported with circulation fluid；The circulation fluid outlet is connected to the water inlet manifold 1 by circulating line 20；On the circulating line 20 Circulating pump 21 and flowmeter 22 is also distributed with, circulating pump 21 described in the present embodiment uses variable frequency pump, realizes the flexible tune of flow Control.

In the use of the present invention, waste water enters from water inlet manifold, by the buffering for distribution cavity 3 of intaking, constant pressure transfers to each Distribution pipe of intaking and water distribution branch pipe, cyclonic action of the waste water Jing Guo cyclone water distributor, realizing light phase liquid upwards is in rotation shape cloth Water, and the heavy phases such as calcification sludge then move down, and fall into sand collecting cavity, the V-shaped design in sand collecting cavity section, sink conducive to husky It forms sediment and collects, effectively prevent the impurity such as useless sand to roll under the water distribution concussion of water distributor, influence fluidized-bed reaction effect, be conducive to sink Drop, effectively reduces the plugging rate of water distributor；Light phase liquid passes through the separation of tank body top multistage three phase separator, then gas-liquid liter The gas-liquid separator for entering top, then follows flow tube from axis by isolated liquid and flow to lower part, mix with new light phase liquid, improves Reaction effect.And after anaerobic reaction, anaerobic digestion solution flows out into the energy circulator 18 of position from the liquid outlet 12 of tank body, root According to the COD value of waste water or the parameter informations such as the COD value of anaerobic digestion solution and pH value, 21 horsepowers of circulating pump are adjusted, and then regulates and controls to follow Anaerobic digestion solution flows into the flow of water inlet manifold in endless tube road 20, realizes the stabilization of anaerobic digestion solution parameter value, it is ensured that reaction effect Fruit；When blocking, by searching for corresponding blocking pipeline, it is then shut off the anti-blocking positive flushing valve dredged in stifled composite structure High pressure running water pipe, is connected to one end of its water distribution branch pipe by 4 (in the open state under normal work) of door, opens backwash valve 6 (being in close state under normal work) of door, carry out the water distribution branch pipe and cyclone water distributor dredges operation, can also pass through Other not stifled anti-blocking positive flushing valves 4 blocked up in composite structure of dredging all are closed, the corresponding one or more anti-of blocking is opened The stifled positive flushing valve 4 dredged in stifled composite structure, that is, can be achieved at the same time more water inlet distribution pipes, water distribution branch pipes, cyclone water distributor Dredge operation.Meanwhile when carrying out above-mentioned part purge operation to water distribution branch pipe and/or cyclone water distributor, the sand discharge pipe It can be used as outlet pipe, the valve of more sand discharge pipes opened, reduce tank interior to the reverse water pressure of cyclone water distributor, Make the more smooth raising dredging efficiency of flowing water；It can certainly be using sand discharge pipe as reversed water receiving pipe, by connecting height to sand discharge pipe Press tap water simultaneously to close the positive flushing valve of other nonclogging water inlet distribution pipes, pipeline or cyclone water distributor to blocking into The reversed purge operation of row.Water distribution stable and uniform of the present invention, overall work stabilization are not easy to plug, block and dredge height simple and efficient to handle Effect, using effect are good.

Specific embodiment 2

The difference of the present embodiment and specific embodiment is only that: as shown in Fig. 2, being additionally provided with second level on the water distribution branch pipe 13 Valve 14, the second level valve 14 are distributed in the tank body one of the water inlet distribution pipe 2 and 13 junction of the water distribution branch pipe Side.The second level valve 14 is mainly used for that blocking pipeline is cooperated to search and dredge, effect such as the present invention and prior art phase Described in the beneficial effect of ratio.

Claims (10)

1. a kind of anaerobic reaction-pot, including tank body, it is characterised in that: it is in nearly " W " shape that longitudal section, which is distributed with, in the lower part of the tank body Partition, the partition by the lower part of the tank body be separated into a circle water inlet distribution cavity and one circle sand collecting cavity；The water inlet distribution cavity It is connected to water inlet manifold；Several water distribution branch pipes are also distributed on the tank body；Several water distribution branch pipes are along the tank body one It is distributed in same plane week and is inserted into the tank interior from the outside to the core and fix, and be distributed in the intracorporal water distribution branch of the tank Several water distributors are also distributed on pipe；The water distributor is distributed in the top of the sand collecting cavity；The water distribution branch pipe and it is described into The connection of water distribution cavity；The lower part of the sand collecting cavity is communicated with several sand discharge pipes, and sand discharge pipe outer end is stretched out outside the tank body Portion；Valve is also distributed on the sand discharge pipe；The top of the tank body is additionally provided with position energy circulator, and institute's rheme energy circulator is one Liquid distributor, inlet are connected to the liquid outlet of the tank body；The lower part of institute's rheme energy circulator is equipped with leakage fluid dram and follows The outlet of ring liquid；The circulation fluid outlet is connected to the water inlet manifold by circulating line；It is also distributed on the circulating line Circulating pump.

2. a kind of anaerobic reaction-pot according to claim 1, it is characterised in that: penetrate the intracorporal water distribution branch of the tank Pipe it is closed at one end.

3. a kind of anaerobic reaction-pot according to claim 1, it is characterised in that: further include several water inlet distribution pipes, institute It states several water inlet distribution pipe one end to be connected to the water inlet distribution cavity, and several water inlet distribution pipes are along the water inlet point It is enclosed with chamber peripheral distribution one；Be distributed on the water distribution branch pipe outside the tank body and also incorporate back flush valves, it is described into The other end of water distribution pipe is connected with the water distribution branch pipe, and is connected between the water distributor and the back flush valves； Positive flushing valve is also incorporated in the water inlet distribution pipe.

4. a kind of anaerobic reaction-pot according to claim 1, it is characterised in that: it further include gas-liquid separator, the gas-liquid Separator is incorporated in the top of the tank.

5. a kind of anaerobic reaction-pot according to claim 4, it is characterised in that: the intracorporal location mid-shaft of tank is also distributed There is axis to follow flow tube, the axis follows flow tube upper end and is connected to the liquid outlet of the gas-liquid separator；The axis follows flow tube Lower part offers one and irises out liquid aperture, and the liquid aperture out is distributed in below the water distribution branch pipe.

6. a kind of anaerobic reaction-pot according to claim 5, it is characterised in that: one end knot of several water distribution branch pipes Conjunction follows on flow tube outer wall in the axis, and the axis follows flow tube and provides support for the water distribution branch pipe.

7. a kind of anaerobic reaction-pot according to claim 1, it is characterised in that: the water distributor is cyclone water distributor, system One is distributed in the side of the water distribution branch pipe, and the cyclone water distributor alternating being distributed on two adjacent water distribution branch pipes Distribution.

8. a kind of anaerobic reaction-pot according to claim 3, it is characterised in that: be additionally provided with secondary valve on the water distribution branch pipe Door, the second level valve are distributed in the tank body side of the water inlet distribution pipe and the water distribution branch pipe junction.

9. a kind of anaerobic reaction-pot according to claim 1, it is characterised in that: flow is distributed on the circulating line Meter, the circulating pump are variable frequency pump, realize that flow is adjustable.

10. a kind of anaerobic reaction-pot according to claim 1, it is characterised in that: several sand discharge pipes are along the collection Husky chamber one encloses even cloth.