CN103058358A - Biological filter capable of improving sewage interception capacity of down-flow biological filter - Google Patents
Biological filter capable of improving sewage interception capacity of down-flow biological filter Download PDFInfo
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- CN103058358A CN103058358A CN2013100331118A CN201310033111A CN103058358A CN 103058358 A CN103058358 A CN 103058358A CN 2013100331118 A CN2013100331118 A CN 2013100331118A CN 201310033111 A CN201310033111 A CN 201310033111A CN 103058358 A CN103058358 A CN 103058358A
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Abstract
The invention relates to a biological filter capable of improving the sewage interception capacity of a down-flow biological filter. The biological filter comprises a filter body, a water inlet pipeline, a filter material layer, a catchment area and a water-producing well, wherein the water inlet pipeline is arranged on the upper part of the filter body; the filter material layer is arranged in the filter body; the catchment area is arranged below the filter material layer; and the water-producing well is arranged on one side of the filter body and is communicated with the catchment area. The biological filter also comprises three water outlet pipelines which are connected to the water-producing well from top to bottom in sequence. By adopting the biological filter, the water producing height of the pipelines of the water-producing well of the biological filter is adjusted to ensure that the water level in the biological filter is always kept nearby a high water level, and the water pressure received by the filter material layer during operation is the maximum, so that more surface layer intercepted particles and biological sludge can be pushed to a deep layer of a filter material to bring the deep layer sewage interception efficiency of the filter material into full play, the filter cycle of the filter is prolonged, the back flushing water amount is reduced, the back flushing sludge yield is reduced, and the running cost is reduced.
Description
Technical field
The invention belongs to the environmental engineering technical field of sewage, especially relate to a kind of biological filter of improving the Downward-flow biofilter retaining power.
Background technology
At present, water environment pollution and shortage of water resources have become the subject matter of the further Sustainable development of restriction Chinese national economy, have caused showing great attention to of various circles of society.The biological filter is a kind of Novel sewage biologic treating technique with simple and easy, efficient and low consumption feature, is one of the study hotspot in recent years biological sewage treatment field.This technology have stable effluent quality, processing efficiency high, process that the water yield is large, floor space is little, compact equipment, convenient operation and management, be easy to realize automatic control, the characteristics such as applied widely.At present be widely used in the municipal sewage treatment of China, the processing of community life sewage and the pre-treatment of reuse, Industrial Wastewater Treatment and micro-polluted source water, become just gradually one of China's a kind of important technique means in biological sewage treatment field.
The water (flow) direction of biological filter is divided into upward flow and lower to two kinds of forms of stream, refer to into the water filter material layer of flowing through from top to bottom to stream down, apposition growth microbial population in the filter material layer, in filter material layer, finish to suspended substance and microorganism in the water inlet hold back and to the degraded of dissolubility pollutant in the water inlet.Because suspended substance often all is just to be trapped on the top layer, the pollutent major part also is to degrade on the upper strata, impel microorganism at the upper strata Fast-propagation, so in filtration procedure, filtrate upper strata resistance increment is very fast, when reaching the filtration resistance limit value of setting, the dirty usefulness of cutting of lower floor's filtrate does not also often reach good performance.In view of this, under this operational mode, the dirty usefulness of cutting of lower floor's filtrate does not reach good performance, will carry out back flushing owing to the limit value that whole filtering layer reaches resistance, the dirty usefulness of cutting of lower floor's filtrate is not fully utilized on the one hand, on the other hand again can be owing to back flushing causes the operation energy consumption of system to increase frequently, producing water ratio reduces, backwashing sludge output is large, operation usefulness is unstable.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of biological filter of improving filtrate deep layer retaining power for the defective that overcomes above-mentioned prior art existence, prolongs the filter cycle, improves producing water ratio, reduces system's operation energy consumption.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of biological filter of improving the Downward-flow biofilter retaining power, comprise filter tank body, inlet channel, filter material layer, catchment area and wet well, inlet channel is located at the top of filter tank body, described filter material layer is arranged in the body of filter tank, described catchment area is located at the below of filter material layer, described wet well is located at the sidepiece of filter tank body and is communicated with the catchment area, also comprises three outlet conduits that are connected in turn on the wet well from top to bottom.
As preferred embodiment, be respectively arranged with high-order rising pipe valve, meta rising pipe valve, low level rising pipe valve on three outlet conduits, three outlet conduit ends are aggregated into a rising pipe.
As preferred embodiment, the vertical separation between three outlet conduits is 400mm.
As preferred embodiment, the catchment area also is connected with back flushing water inlet pipe and back flushing inlet pipe.
As preferred embodiment, the top of filter tank body also is provided with the back flushing water leg and backwashing water is collected canal, and backwashing water is collected canal and is communicated with the back flushing water shoot.
By being set, three highly different outlet conduits substitute traditional water outlet regulating weir (water outlet keeps permanent water level), when the filter tank brings into operation, process the water bed of material after filtration from top to bottom, outlet conduit by the bottom enters wet well, the water outlet when water level of wet well is increased to first outlet conduit enters the subsequent disposal structures.At this moment, liquid level is near higher level (set recoil liquid level limit value) in the filter tank, can give filtering layer higher hydraulic pressure, and the pollutent that hold back on the top layer advances to filtrate deep layer place under higher water pressure pushing gradually; When filtering layer resistance rising 400mm (liquid level rising 400mm in the filter tank), open the outlet conduit valve of the second height, the water level in the wet well reduces 400mm, and the 400mm that also can thereupon descend of the liquid level in the filter tank maintains near original water level; The continuation of filter tank resistance increases thereupon, and water level continues to rise, and behind filter tank water level rising 400mm, opens the outlet conduit valve of wet well third high degree, and wet well water level decline 400mm, the water level in the filter tank 400mm that can descend again continues filtration procedure.As the filter tank water level 400mm that again rises, when reaching the liquid level limit value, start this moment and send out a cleaning procedure, the cleaning process of beginning filtrate.
As preferred embodiment, the material of high-order rising pipe valve, meta rising pipe valve, low level rising pipe valve is steel, and diameter valve is 100mm.
As preferred embodiment, the filter tank body adopts Steel Concrete to build by laying bricks or stones.
As preferred embodiment, the filtrate of light filling haydite in the filter material layer.
As preferred embodiment, the particle diameter of light ceramic is 6-9mm.
Compared with prior art, the present invention can make filter material layer be in all the time under the higher hydraulic pressure state and work, the pollutent of holding back in the filtering layer can move toward the filtering layer depths one by one, thereby makes the higher deep layer filtrate of thickness bring into play the effect of section dirt, rather than only brings into play the dirty effect of cutting of top layer filtrate.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure, 1 is the filter tank body, and 2 is inlet channel, 3 is filter material layer, and 4 is the catchment area, and 5 is wet well, 6 is high-order rising pipe valve, and 7 is meta rising pipe valve, and 8 is low level rising pipe valve, 9 is rising pipe, 10 are the back flushing water inlet pipe, and 11 are the back flushing inlet pipe, and 12 are the back flushing water leg, 13 are backwashing water collection canal, and 14 are the back flushing water shoot.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
A kind of biological filter of improving the Downward-flow biofilter retaining power, its structure mainly comprise filter tank body 1 as shown in Figure 1, inlet channel 2, filter material layer 3, catchment area 4, wet well 5, high-order rising pipe valve 6, meta rising pipe valve 7, low level rising pipe valve 8, rising pipe 9, back flushing water inlet pipe 10, back flushing inlet pipe 11, back flushing water leg 12, backwashing water is collected canal 13, back flushing water shoot 14.
In the operational process, inlet channel 2 enters filter tank 1 with raw water, and the former water filter material layer 3 of flowing through from top to bottom comes together in catchment area 4, enters wet well 5 by the water distribution tracery wall, when pump well 5 median water level are increased to high-order rising pipe, opens high-order rising pipe valve 6 water outlets; Along with the prolongation of working time, the water level in the biological filter 1 raises gradually, when lift-off value reaches 400mm, opens 7 water outlets of meta rising pipe valve, wet well median water level decline this moment 400mm, the water level in filter tank 1 400mm that also can thereupon descend, and filtration is proceeded; Along with the prolongation of working time, the 400mm that again raises of the water level in the biological filter 1 opens 8 water outlets of low level rising pipe valve this moment, wet well median water level decline 400mm, the water level in filter tank 1 400mm that again thereupon descends, and filtration is proceeded.Along with the prolongation of filtration time, the water level in filter tank 1 400mm that again raise, at this moment, finish a filtration cycle, need to carry out filter back washing.By the outlet conduit of three different heights is set, filter material layer 3 is under the higher hydraulic pressure state all the time works, the pollutent of holding back in the filter material layer 3 can move toward the depths of filter material layer 3 one by one, thereby make the higher deep layer filtrate of thickness bring into play the effect of section dirt, rather than only bring into play the dirty effect of cutting of top layer filtrate.
In the backwash process, adopt the combined water and air backwash mode, close low level rising pipe valve 8, water inlet pipe valve, open the valve of back flushing water pipe 10 and back flushing tracheae 11, carry out back flushing, backwashing water enters in the back flushing water leg 12, imports backwashing water and collects canal 13, again by back flushing water shoot 14 discharge systems.
In the Yuhuang Mount pre-treatment water factory of Hangzhou, set up under the lattice to the stream denitrification bio-filter, adopt Steel Concrete to build by laying bricks or stones.Biological filter single lattice planar dimension 3x4m, height 5.2m; Filtrate adopts light ceramic, and particle diameter is 6-9mm, and thickness of filter bed is 2m; Catchment area, bottom height is 0.8m; Wet well is of a size of 1x1m, highly is 5.2m; Inlet channel is steel pipe, and diameter is 100mm; A high position, meta, three outlet conduits of low level are steel pipe, and diameter is 100mm, and valve is DN100, and the height difference of three outlet conduits is 400mm.
Lower lower the contrast in the Yuhuang Mount pre-treatment plant of Hangzhou to the stream denitrification bio-filter to stream denitrification bio-filter device and an other lattice same size of the present invention moved 1 year, to COD, and TN, the average removal rate of SS is respectively 23%, 72%, and 82%; 25%, 70%, 83%; The backwashing period of the two was respectively 2 days and 1.5 days.Can find out that the two is close to the clearance of COD, SS and TN, and of the present inventionly the denitrification bio-filter cycle of operation prolong 1/3 to stream down, reduce back flushing number of times, backwashing sludge output and working cost, have good environment and economy benefit.
Claims (9)
1. biological filter of improving the Downward-flow biofilter retaining power, comprise filter tank body (1), inlet channel (2), filter material layer (3), catchment area (4) and wet well (5), described inlet channel (2) is located at the top of filter tank body (1), described filter material layer (3) is arranged in the filter tank body (3), described catchment area (4) is located at the below of filter material layer (3), described wet well (5) is located at the sidepiece of filter tank body (1) and is communicated with catchment area (4), it is characterized in that, also comprise three outlet conduits that are connected in turn on the wet well (5) from top to bottom.
2. a kind of biological filter of improving the Downward-flow biofilter retaining power according to claim 1, it is characterized in that, be respectively arranged with high-order rising pipe valve (6), meta rising pipe valve (7), low level rising pipe valve (8) on three outlet conduits, three outlet conduit ends are aggregated into a rising pipe (9).
3. a kind of biological filter of improving the Downward-flow biofilter retaining power according to claim 1 and 2 is characterized in that, the vertical separation between three outlet conduits is 400mm.
4. a kind of biological filter of improving the Downward-flow biofilter retaining power according to claim 2, it is characterized in that, the material of described high-order rising pipe valve (6), meta rising pipe valve (7), low level rising pipe valve (8) is steel, and diameter valve is 100mm.
5. a kind of biological filter of improving the Downward-flow biofilter retaining power according to claim 1 is characterized in that, described filter tank body (1) adopts Steel Concrete to build by laying bricks or stones.
6. a kind of biological filter of improving the Downward-flow biofilter retaining power according to claim 1 is characterized in that, the filtrate of light filling haydite in the described filter material layer (3).
7. a kind of biological filter of improving the Downward-flow biofilter retaining power according to claim 6 is characterized in that, the particle diameter of described light ceramic is 6-9mm.
8. a kind of biological filter of improving the Downward-flow biofilter retaining power according to claim 1 is characterized in that, described catchment area (4) also are connected with back flushing water inlet pipe (10) and back flushing inlet pipe (11).
9. a kind of biological filter of improving the Downward-flow biofilter retaining power according to claim 1, it is characterized in that, the top of described filter tank body (1) also is provided with back flushing water leg (12) and backwashing water is collected canal (13), and described backwashing water is collected canal (13) and is communicated with back flushing water shoot (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310033111.8A CN103058358B (en) | 2013-01-29 | 2013-01-29 | Biological filter capable of improving sewage interception capacity of down-flow biological filter |
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| CN201310033111.8A CN103058358B (en) | 2013-01-29 | 2013-01-29 | Biological filter capable of improving sewage interception capacity of down-flow biological filter |
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| CN103058358A true CN103058358A (en) | 2013-04-24 |
| CN103058358B CN103058358B (en) | 2014-06-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621606A (en) * | 2016-03-02 | 2016-06-01 | 上海交通大学 | Novel denitrification biological filter with light filtering material |
| CN108392865A (en) * | 2018-04-12 | 2018-08-14 | 华东师范大学 | End based on the existing Storm Sewer Network in residential block cuts dirty separator and cuts dirty method |
| CN109081442A (en) * | 2018-10-29 | 2018-12-25 | 上海溪昌环境工程有限公司 | A kind of light filter material high-efficient biological reactor |
| CN111252888A (en) * | 2020-02-17 | 2020-06-09 | 上源环工生态环境科技(苏州)有限公司 | Biomembrane light filter device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201930588U (en) * | 2010-10-25 | 2011-08-17 | 湖北中碧环保科技有限公司 | Drawer-type filtering device for water treatment |
| CN202099163U (en) * | 2011-05-26 | 2012-01-04 | 上海交通大学 | Combined layering biological filter for sewage treatment |
-
2013
- 2013-01-29 CN CN201310033111.8A patent/CN103058358B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201930588U (en) * | 2010-10-25 | 2011-08-17 | 湖北中碧环保科技有限公司 | Drawer-type filtering device for water treatment |
| CN202099163U (en) * | 2011-05-26 | 2012-01-04 | 上海交通大学 | Combined layering biological filter for sewage treatment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621606A (en) * | 2016-03-02 | 2016-06-01 | 上海交通大学 | Novel denitrification biological filter with light filtering material |
| CN108392865A (en) * | 2018-04-12 | 2018-08-14 | 华东师范大学 | End based on the existing Storm Sewer Network in residential block cuts dirty separator and cuts dirty method |
| CN109081442A (en) * | 2018-10-29 | 2018-12-25 | 上海溪昌环境工程有限公司 | A kind of light filter material high-efficient biological reactor |
| CN111252888A (en) * | 2020-02-17 | 2020-06-09 | 上源环工生态环境科技(苏州)有限公司 | Biomembrane light filter device |
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| CN103058358B (en) | 2014-06-25 |
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