CN201317704Y

CN201317704Y - Biological filter tower

Info

Publication number: CN201317704Y
Application number: CNU2008201858024U
Authority: CN
Inventors: 洪树虎
Original assignee: JIANGSU BAINA ENVIRONMENT ENGINEERING Co Ltd
Current assignee: JIANGSU BAINA ENVIRONMENT ENGINEERING Co Ltd
Priority date: 2008-09-11
Filing date: 2008-09-11
Publication date: 2009-09-30
Anticipated expiration: 2018-09-11

Abstract

The utility model discloses a biological filter tower, which comprises an outer cylinder of the biological filter tower, wherein, the lower part of the outer cylinder is provided with an inlet water distributing pipe, and the middle part of the outer cylinder is provided with an aerated conduit, and the interior of the outer cylinder is provided with a filter material blocking layer, biological filter material ceramic material, active granular filter material and a filter material filling layer from up to down; an inner cylinder is also arranged inside the outer cylinder, and the lower part of the inner cylinder is connected with an outlet pipe which extends out of the outer cylinder, and the middle part of the inner cylinder is filled with a quartz sand filter layer. Compared with the traditional AO bio-chemical process, the construction expense of the biological filter tower is 60 to 70 percent, and the energy consumption is 80 to 90 percent, and the biological filter tower has the function of synchronic denitrification and dephosphorization; the quality of the produced water is equal to or less than 15mg/1; BOD is equal to or less than 5 mg/1; COD is equal to or less than 35 mg/1; NH3 is equal to or less than 6 mg/1; the biological filter tower is obviously better than other biological filter towers.

Description

Biological filtering tower combined working

Technical field

The utility model relates to a kind of advanced treatment apparatus that is applied to sub-district, trade effluent, particularly a kind of biological filtering tower combined working.

Background technology

Biological filtering tower combined working is as the term suggests comprise bio-reactor and filtering system, it is the combination of a kind of embrane method biological treatment and high efficiency filter device, utilize the huge specific surface area absorption microorganism of filtering material particle, sewage is in the filtrate process of flowing through, with a large amount of microorganisms of adsorbing on the filtering material particle complicated biochemical reaction taking place, makes the organic substance in the sewage generate CO ₂, H ₂Innoxious substances such as O reach the purpose that purifies water; The aging microorganism that comes off, suspended substance etc. guarantee that with through biofiltration or precipitation final outflow water is qualified in the sewage.Biological filtering tower combined working technology is general divides aerobic and two sections of biofiltrations, and leading portion is based on bio-oxidation, and it is auxilliary that absorption is held back, it is main that back segment absorption is held back, and bio-oxidation is auxilliary, exists biochemical efficiency low, because have only the aerobic biochemical reaction, for difficult biochemical substances, the organic degradation effect will be had a greatly reduced quality; Filter or a precipitation effect difference, because as adopting biofiltration, back segment has biochemical function concurrently, after the long-time running, the aging microorganism that comes off can cause that SS in the final outflow water, BOD raise, aging microorganism is removed in backwash, and the destruction that can cause microbial film and filtering layer again causes biochemical reaction and filter effect deficiency, as adopt coprecipitation mode, the words of dosing have increased investment source and working cost greatly, and the words sedimentation effect of not dosing is never desirable, and suspended substance is difficult to up to standard in the water.

The utility model content

Goal of the invention: the purpose of this utility model is at the deficiencies in the prior art, provides a kind of sewage load to rise the low biological filtering tower combined working of Yang Cheng.

Technical scheme: the utility model discloses a kind of biological filtering tower combined working, the urceolus that comprises biological filtering tower combined working, be provided with into water water distributor in the urceolus bottom, be provided with aerated conduit at the urceolus middle part, urceolus inside is provided with filtrate blocking layer, biofilter material pottery material, active particle filtrate and filtrate packing course from top to bottom successively, also be provided with an inner core in urceolus, the inner core bottom connects the rising pipe that stretches out urceolus, and quartzy sand filter blanket is filled at the middle part.

The utility model utilizes the design of inner core, has realized the double filtration effect, under the situation that does not increase the biological filtering tower combined working height, has improved filtration efficiency greatly.

In the utility model, at the inner core top water distributor is arranged, making the urceolus water outlet enter inner core can be evenly, inner core middle part filling quartz sand.Former water enters from outer tube bottom, enters inner core through overflow behind anaerobism, the aerobic reaction, through inner core filtering separation suspended solid, finally from interior tube bottom water outlet.

In the utility model, preferably, inner core top is connected with the inner core water distributor, and making the urceolus water outlet enter inner core can be evenly.

In the utility model, preferably, described water inlet water distributor is " rich " font structure.

As further improvement of the utility model, the described biofilter material material of making pottery is porous ceramic grain, thereby provides carrier for microorganism.

Beneficial effect: biological filtering tower combined working described in the utility model is compared with traditional AO biochemical process, and construction cost is 60～70%, and energy consumption is 80～90%, has the synchronous denitrification dephosphorizing function, effluent quality SS≤15mg/l, BOD≤5mg/l, COD≤35mg/l, NH ₃≤ 6mg/l obviously is better than other biological filtering tower combined working.

Description of drawings

Fig. 1 is the utility model structure biological filtering tower combined working synoptic diagram.

Fig. 2 is the utility model process flow sheet.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further explanation.

As shown in Figure 1, the utility model discloses a kind of biological filtering tower combined working, the urceolus 6 that comprises biological filtering tower combined working, be provided with the water inlet water distributor 1 that is " rich " font structure in urceolus 6 bottoms, be provided with aerated conduit 3 at urceolus 6 middle parts, urceolus 6 inside are provided with filtrate blocking layer 5, biofilter material pottery material 4, active particle filtrate 2 and filtrate packing course 11 from top to bottom successively, in urceolus 6, also be provided with an inner core 7, inner core 7 tops are connected with inner core water distributor 9, the bottom connects the rising pipe 10 that stretches out urceolus, and quartzy sand filter blanket 8 is filled at inner core 7 middle parts.In the utility model, described biofilter material is made pottery and is expected that 4 is porous ceramic grain.

Biological filtering tower combined working described in the utility model adopts that anticorrosion or stainless steel is welded with carbon steel, and equipment is made up of the urceolus and the inner core of two reducings and different diameter, and small diameter cylinder is positioned at inside the large cylinder, independent separately one-tenth system.Former water enters from the large cylinder bottom, enters inner core through overflow behind anaerobism, the aerobic reaction, through inner core filtering separation suspended solid, finally from interior tube bottom water outlet.

Outer tube bottom filling active particle filtrate, plays former water is adsorbed and Decomposition owing to be anaerobic state to the stack shell middle part.

As shown in Figure 2, workflow of the present utility model is: be made up of sewage pump system, one section anaerobic reactor, one section aerobic reactor, two sections strainers, filter tank recoil and air systems, two concentric drums are formed two technique units, and inner core is positioned at the urceolus the inside.Urceolus divides anaerobic and aerobic two systems, is the upward flow device, and inner core is a filtering system, and to the stream device, one section system's water outlet enters two sections water distributors through compiling, after filtering water outlet for down.

The utility model has been given full play to the bio-reactor dirty removal capacities, and waste water is at first by one section anaerobic reactor, and the organic macromolecule of difficult degradation is decomposed into the organic molecule of easy degraded, improves the biodegradability and the solvability of waste water greatly; The anaerobism water outlet is removed organism through one section aerobic reactor again; Outputted aerobic water is the suspended substance in independent two sections filtration system filters outputted aerobic water again, reach the solid-liquid separation purpose, when independent filtering system water outlet is defective, carry out backwash, do not influence the prime bioreactor function, fully overcome the shortcoming that biological filtering tower combined working is in the past held back biochemical efficiency difference after aging microorganism deficiency and the backwash.And urceolus has utilized the upward flow filtering material particle to be difficult for stopping up, and cuts the strong advantage of dirt (not needing dosing for particulate matters such as suspended substances) to the stream filtrate under the inner core, thereby has formed the COMBINED PROCESS of bio-oxidation and mechanical filter.

The utility model provides a kind of thinking and method of biological filtering tower combined working; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.The all available prior art of each component part not clear and definite in the present embodiment is realized.

Claims

1, a kind of biological filtering tower combined working, the urceolus (6) that comprises biological filtering tower combined working, be provided with into water water distributor (1) in urceolus (6) bottom, be provided with aerated conduit (3) at urceolus (6) middle part, urceolus (6) inside is provided with filtrate blocking layer (5) from top to bottom successively, biofilter material is made pottery and expected (4), active particle filtrate (2) and filtrate packing course (11), it is characterized in that, in urceolus (6), also be provided with an inner core (7), the bottom connects the rising pipe (10) that stretches out urceolus, and quartzy sand filter blanket (8) is filled at inner core (7) middle part.

2, biological filtering tower combined working according to claim 1 is characterized in that, inner core (7) top is connected with inner core water distributor (9).

3, biological filtering tower combined working according to claim 1 is characterized in that, described biofilter material is made pottery and expected that (4) are porous ceramic grain.