Background technique
Biological aerated filter is the new equipment for collecting biological oxidation and retaining suspended solid one, can by biological aerated filter
To remove the suspended matter in sewage (SS), COD (COD), biochemical oxygen demand (BOD) (BOD), nitrification, denitrogenation, dephosphorization, removal
AOX (harmful substance) etc..Biological aerated filter can preferably purify sewage, but simultaneously, and the waste filtered out be easy to cause exposure
The blocking of gas filter material for biological filter.Therefore, biological aerated filter backwash is for the normal operation of biological aerated filter to Guan Chong
Want, by backwash can by the SS retained on Discussion of Biological Aerated Filter Medium and on filtrate excess growth, aging microorganism
Film washes in time, guarantees filtrate gap, to will not influence the water outlet water and effluent quality of biological aerated filter.Currently,
The normal process of biological aerated filter backwash is to reduce filter tank liquid level, then successively carries out air purge, air water is washed, washed.It is existing
In the backwash process of normal process, liquid level is made to be in the 90-100% of filtrate height, make most filtrates be in wet water or
After Riddled Condition, then using air purge, air water washes, washes and backwash to filtrate.This method remover can filter to a certain degree
The ss retained on the filtrate of pond, cleaning part on filtrate excess growth, aging microbial film.However, in biological aerated filter
Practical application in, counter-flushing process despite the use of, but still occur the hardened phenomenon of filtrate often, it is therefore desirable to a large amount of
Manpower and material resources investment, or even filter tank is dismantled, filtrate is started the cleaning processing.
Utility model content
The purpose of this utility model is to provide a kind of biological aerated filter of intelligent control back washing strength, it is intended to solve
The biological aerated filter of existing intelligent control backwash is easy to appear the hardened problem of filtrate.
A kind of biological aerated filter that in order to achieve the above purposes, the technical solution adopted by the utility model is:, the aeration life
Object filter tank be intelligent control back washing strength biological aerated filter, including set gradually from the bottom up distributing water room, filter material layer and
Clear water reserviors are provided with supporting layer, setting water distribution gas distribution are interted between the supporting layer between the distributing water room and the filter material layer
Filter, wherein the clear water reserviors further include the overflow pipe and water outlet communicated with inside clear water reserviors pond body, in the clear water reserviors
Wall, the position close to the water outlet are provided with the SS monitoring for detecting the effluent SS concentration for flowing through the water outlet and visit
Head.
Preferably, the SS monitoring probe is connected with the intelligent control module for controlling biological aerated filter.
Preferably, the middle line that the lower edge of the SS monitoring probe is located at the water outlet is overlapped.
Preferably, the biological aerated filter be additionally provided with the nitrification liquid return pipe communicated with inside distributing water room's pond body, into
Water pipe, backwash water pipe, air emptying pipe, emptying water pipe and backwash tracheae.
Preferably, the nitrification liquid return pipe, water inlet pipe, backwash water pipe, air emptying pipe, emptying water pipe and backwash
Tracheae is respectively arranged with the valve of control folding.
Biological aerated filter provided by the utility model, in the position of the clear water reserviors inner wall, the close water outlet, if
It is equipped with the SS monitoring probe for detecting the effluent SS concentration for flowing through the water outlet, the SS monitoring probe detection backwash
In program in gas water-washing step, the effluent SS concentration through the water outlet, intelligent object is divided the SS concentration being collected into
Analysis, and then the washing intensity in backwashing procedures before gas water-washing step in 5 minutes is adjusted, the effect of backwash is improved, reduces and exposes
The risk of gas filter material for biological filter blocking, guarantees the normal operation of biological aerated filter process.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural representation of the biological aerated filter of intelligent control back washing strength provided by the embodiment of the utility model
Figure.
Wherein, each appended drawing reference in figure:
1-- distributing water room 2-- filter material layer 3-- clear water reserviors
31-- overflow pipe 32--- water outlet 4-- supporting layer
5 51-- water distribution gas distribution filter 6--SS monitoring probe of water distribution distribution device
7-- nitrification liquid return pipe 71-- nitrification liquid reflux tube valve 8-- water inlet pipe
81-- water inlet valve 9-- backwashes water pipe 91-- backwashing water tube valve
10-- air emptying pipe 101-- air emptying tube valve 11-- is vented water pipe
111-- is vented aqueduct valve 12-- and backwashes tracheae 121-- backwash gas tube valve.
Specific embodiment
In order to which the technical problems to be solved in the utility model, technical solution and beneficial effect is more clearly understood, below
In conjunction with the embodiments, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only
To explain the utility model, it is not used to limit the utility model.
In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of utility model.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;It can be
Mechanical connection, is also possible to be electrically connected;It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model embodiment provides a kind of biological aerated filter, and the biological aerated filter is intelligent control recoil
The biological aerated filter of intensity is washed, including sets gradually distributing water room 1, filter material layer 2 and clear water reserviors 3 from the bottom up, distributing water room 1 and filter
Supporting layer 4 is provided between the bed of material 2, supporting layer 4 is disposed with water distribution distribution device 5, and water distribution distribution device 5 includes penetrating supporting layer
4 extend to the filter 51 of distributing water room 1, wherein clear water reserviors 3 further include the overflow pipe 31 communicated with inside 3 pond body of clear water reserviors and water outlet
Mouthfuls 32, in 3 inner wall of clear water reserviors, close to the position of water outlet 32, be provided with for detect flow through water outlet 32 effluent SS it is dense
The SS monitoring probe 6 of degree.
Biological aerated filter provided by the embodiment of the utility model, 3 inner wall of clear water reserviors, close to water outlet 32 position,
It is provided with the SS monitoring probe 6 for detecting the effluent SS concentration for flowing through water outlet 32, the detection backwash journey of SS monitoring probe 6
In sequence in gas water-washing step, the effluent SS concentration through water outlet 32, intelligent object analyzes the SS concentration being collected into, into
And the washing intensity in backwashing procedures before gas water-washing step in 5 minutes is adjusted, the effect of backwash is improved, aeration and biological is reduced
The risk of filter blocking, guarantees the normal operation of biological aerated filter process.
Preferably, SS monitoring probe 6 is connected with the intelligent control module for controlling biological aerated filter.As a result, from SS
The SS concentration data that monitoring probe 6 is learned is transferred to intelligent control module, after analyzing, washes to air water in backwashing procedures rapidly
Washing intensity before step in 5 minutes is made adjustment.Specifically, when the SS concentration that SS monitoring probe 6 detects is 50-200ppm
When, washing intensity in 5 minutes is 34m before adjusting gas water-washing step3/m2/h;When the SS concentration that SS monitoring probe 6 detects is
When 200-400ppm, the washing intensity before adjustment gas water-washing step in 5 minutes is 30m3/m2/h;When SS monitoring probe 6 detects
SS concentration be 400-700ppm, washing intensity in 5 minutes is 26m before adjusting gas water-washing step3/m2/h。
In order to obtain accurate SS concentration data as far as possible, SS monitoring probe 6 is preferably positioned as close to water outlet
32, it is advisable with not blocking water outlet 32.Preferably, the middle line that the lower edge of SS monitoring probe 6 is located at water outlet 32 is overlapped, so as to
To obtain accurately and reliably SS concentration data, meanwhile, the normal water outlet of water outlet 32 will not be interfered.
Preferably, the biological aerated filter be additionally provided with the nitrification liquid return pipe 7 communicated with inside 1 pond body of distributing water room,
Water inlet pipe 8, backwash water pipe 9, air emptying pipe 10, emptying water pipe 11 and backwash tracheae 12.Nitrification liquid return pipe 7, water inlet
Pipe 8, backwash water pipe 9, air emptying pipe 10, emptying water pipe 11 and the setting position for backwashing tracheae 12 do not have considered critical,
The surrounding of distributing water room 1 is set.Preferably, nitrification liquid return pipe 7, water inlet pipe 8, backwash water pipe 9, emptying water pipe 11 are set
Set from the different branches of the same pipeline communicated inside 1 pond body of distributing water room.It is further preferred that nitrification liquid return pipe 7, into
Water pipe 8, backwash water pipe 9, air emptying pipe 10, emptying water pipe 11 and backwash tracheae 12 are respectively arranged with the valve of control folding
Door.The tube valve 71 specifically, nitrification liquid that nitrification liquid return pipe 7 is provided with for controlling the folding of nitrification liquid return pipe 7 flows back, into
Water pipe 8 is provided with the water inlet valve 82 for controlling the folding of water inlet pipe 8, and backwash water pipe 9 is provided with for controlling backwash
The backwashing water tube valve 91 that water pipe 9 opens and closes, air emptying pipe 10 are provided with the air for controlling the folding of air emptying pipe 10
It is vented tube valve 101, emptying water pipe 11 is provided with the emptying aqueduct valve 111 opened and closed for controlling emptying water pipe 11, backwash
Tracheae 12 is provided with the backwash gas tube valve 121 opened and closed for controlling backwash tracheae 12.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.