CN204298145U - A kind of rearmounted denitrification organisms filtration system - Google Patents
A kind of rearmounted denitrification organisms filtration system Download PDFInfo
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- CN204298145U CN204298145U CN201420801101.4U CN201420801101U CN204298145U CN 204298145 U CN204298145 U CN 204298145U CN 201420801101 U CN201420801101 U CN 201420801101U CN 204298145 U CN204298145 U CN 204298145U
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Abstract
The utility model relates to a kind of rearmounted denitrogenation biological filter system, comprise feed water flow gauge well, water inlet distribution channel, filter tank main body, piping lane, discharge bay, backwashing wastewater pond, backwash pump house, air blast machine room, carbon source dosing system and power distribution station, feed water flow gauge well is communicated with the delivery port of filter tank main body, piping lane is communicated with the water inlet of filter tank main body, backwashing wastewater pond is communicated with the bottom of filter tank main body by the counter-flushing pipeline that filter tank bottom part body is laid, air blast machine room is communicated with the bottom of filter tank main body by air inlet pipeline, in the body of filter tank, be provided with biofilter material.Native system is the processing unit that collection biological denitrificaion and filtering function unite two into one, adopt the biofilm medium of quartz sand (also can be other filtrates such as haydite) as denitrification biology of special requirement and shape, the filter bed of rearmounted denitrogenation biological filter is dark bed (being generally greater than 1.8m) simultaneously, ensure that there is high removal efficiency in filter tank to nitrate nitrogen and suspension, wherein SS water outlet is less than 5mg/L, and nitrate nitrogen is less than 1.5mg/L.
Description
Technical field
The utility model belongs to environmental technology field, relates to the denitrogenation biological filter of advanced treatment of wastewater, especially a kind of rearmounted denitrification organisms filtration system.
Background technology
In recent years, water resources in china total amount day by day reduces, and day by day serious water environment pollution makes the tense situation of water resource aggravate further, and water resources problems has become the bottleneck of China's economic and social sustainable development.Reusing sewage contains great potential to the shortage of solution city water resource, and sewage, through suitable regeneration process, can be re-used in the multiple uses such as landscape water, green area irrigation, industry cooling, realize water resource recycling.Major part sewage treatment plant of China needs upgrading, to improve sewage disposal plant effluent water quality, realizes reuse of wastewater further.
Rearmounted denitrogenation biological filter is the processing unit integrating biological denitrificaion and filtering function, is the core process equipment of stain disease advanced treatment process.This process equipment is sewage treatment plant's upgrading, realizes the preferred equipment of reuse of wastewater, and its main equipment first elects anti-nitre deep-bed filter.Anti-nitre deep-bed filter is along with the prolongation of running time in filter process, and the SS that the quartz sand filter media in it retains increases the increase that can cause head, and water outlet SS index can be caused to increase, and at this moment must carry out backwash to filter tank and remove.
At present, there are some defects in rearmounted denitrogenation biological filter, is mainly reflected in: the easy blocking that 1, traditional filter tank technology exists, be difficult to accurately judge when filter tank needs the problem of backwash; 2, how to control Backwashing intensity of filter accurately flexibly, after avoiding that back washing strength is excessive and causing filter back washing, recovery time is long, and the too low biomembrane of undue growth that makes of intensity is difficult to thoroughly get rid of from filter tank system, and the problem blocked appears in local, filter tank; 3, how to control the filter back washing time accurately flexibly, avoid causing the filter tank backwash used water yield, backwash tolerance excessive, increase the problem of energy consumption; 4, after being difficult to ensure filter back washing, denitrification and filtering function can be recovered within the shortest time, ensure the effluent quality up to standard obtaining stable TN and suspension.The problems referred to above are obtained good recycled water water quality all to rearmounted denitrogenation biological filter sewage treatment process and bring practical difficulty, thus hinder the further raising of this process operation effect and applying of technique.Therefore, a kind of better more perfect rearmounted denitrogenation biological filter automatic control system and the perfect operation method of corresponding science is needed to propose.
Existing biological denitrificaion filter tank, in the patent document that basic display is retrieved below:
1, a kind of lift flow biological denitrification filter pool (CN2430440), passes through pipeline one-level denitrogenation in series filter tank and secondary denitrogenation filter tank by one-level BAF and secondary BAF; In one-level denitrogenation filter tank, the top of aeration grid is aerobic zone, and bottom is anoxic zone; Make the organic matter in contaminant water obtain aerobic stabilization, make the removal of carbon contamination thing, the nitrification and denitrification of nitrogen organic realizes in a filter tank,
2, a kind of Denitrification filter system and filter method (CN103253837A) thereof, this Denitrification filter system comprises pretreatment unit (1), floods dark formula biological filter unit (2), floods BAF unit (3), clean unit (4) and denitrification deep-bed filter unit (5), above-mentioned each unit is communicated with setting successively by connecting line, and described pretreatment unit (1) is provided with grid and wire-mesh screen; It is described that to flood dark formula biological filter unit (2) be 4 up-flow anoxic biological denitrification reactors, flooding BAF unit (3) is 4 up-flow fixed biofilm aerobe reactors, described denitrification deep-bed filter unit (5) is the current flow fixed bed formula filter tank of gravity, comprise the eight groups of filtering ponds separated by pool wall successively, filtering ponds are provided with collecting-tank at the bottom of pond.Filter method is that waste water is filtered by said units successively.
3, a kind of wave current formula denitrification filter pool (CN104098234A), relate to sewage treatment technology field, filtering ponds and denitrification pond are walked abreast and arranges, current enter from filtering ponds top, descendingly flow through filter material layer and gravel layer successively, denitrification pond is entered from bottom, uply flow through gravel layer and filter material layer successively, from being separated of top, denitrification pond bleeder filter process and denitrification process, and give full play to respective function, avoid mutual interference, filtering ponds and denitrification pond are walked abreast and arranges, avoid superposition to arrange, reduce the total height of device, carbon source is added at denitrification end, avoid the consumption of dissolved oxygen to carbon source.
By the contrast of technical characteristic, above-mentioned patent document is not identical with the utility model application.
Utility model content
The purpose of this utility model is the weak point overcoming original technology, and provide a kind of rearmounted denitrification organisms filtration system, this system science, has high removal efficiency to nitrate nitrogen and suspension.
The technical scheme that the utility model technical solution problem adopts is:
A kind of rearmounted denitrogenation biological filter system, comprise feed water flow gauge well, water inlet distribution channel, filter tank main body, piping lane, discharge bay, backwashing wastewater pond, backwash pump house, air blast machine room, carbon source dosing system and power distribution station, feed water flow gauge well is communicated with the delivery port of filter tank main body, piping lane is communicated with the water inlet of filter tank main body, pond is set out respectively outside piping lane, backwashing wastewater pond, backwash pump house, air blast machine room, carbon source dosing system and power distribution station, backwashing wastewater pond is communicated with the bottom of filter tank main body by the counter-flushing pipeline that filter tank bottom part body is laid, air blast machine room is communicated with the bottom of filter tank main body by air inlet pipeline, biofilter material is provided with in the body of filter tank.
And the filtrate of described filter tank body is equipped with end brick layer, supporting layer, sand filter blanket from bottom to top successively.
And, the discharge bay of described filter tank body is communicated with the made water distribution weir of filter tank body bilateral symmetry, this outer rim position, water distribution weir is provided with the weir plate of notch cuttype by securing member, this weir plate is notch cuttype stainless steel weir plate, in the ladder plane of this weir plate, uniform interval is fixed with the stainless steel tube row of connection downwards, under the lower end that stainless steel tube is arranged extend into water level.
And the through hole of described securing member makes longitudinal bar shaped.
Advantage of the present utility model and good effect are:
1, native system is the processing unit that collection biological denitrificaion and filtering function unite two into one, adopt the biofilm medium of quartz sand (also can be other filtrates such as haydite) as denitrification biology of special requirement and shape, the filter bed in rearmounted biological denitrificaion filter tank is dark bed (being generally greater than 1.8m) simultaneously, ensure that there is high removal efficiency in filter tank to nitrate nitrogen and suspension, wherein SS water outlet is less than 5mg/L, and nitrate nitrogen is less than 1.5mg/L.
2, native system structure is ingenious, design science, has high removal efficiency to nitrate nitrogen and suspension, and durable in use, and can ensure under normal service condition does not need to overhaul on a large scale and rebuild for many years.
3, native system has taken into full account that conventional rearmounted denitrogenation biological filter water distribution drop is turbulent condition and the problem larger with air contact surfaces, under the prerequisite meeting water distribution function, water distribution is dispensed directly into below filter tank minimum level by the pipeline arranged that is uniformly dispersed; , therefore there is not oxygenation problem in falling whole process in water distribution and do not contact with air due to pipe weir, thoroughly solves the problem that dissolved oxygen increases.
Accompanying drawing explanation
Fig. 1 is structural front view of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional view;
Fig. 3 is that the B-B of Fig. 2 is to cross section enlarged drawing;
Fig. 4 is the pipe weir structure enlarged diagram of Fig. 3;
Fig. 5 is that the C-C of Fig. 4 is to cross-sectional view.
Detailed description of the invention:
Below by accompanying drawing, the utility model is described in further detail in conjunction with specific embodiments, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of rearmounted denitrogenation biological filter system, comprise feed water flow gauge well 9, water inlet distribution channel 8, filter tank main body 5, piping lane 4, discharge bay 3, backwashing wastewater pond 2, backwash pump house 1 (available immersible pump is placed in discharge bay), air blast machine room 11, carbon source dosing system and power distribution station 10, feed water flow gauge well is communicated with the delivery port of filter tank main body, piping lane is communicated with the water inlet of filter tank main body, pond is set out respectively outside piping lane, backwashing wastewater pond, backwash pump house (available immersible pump is placed in discharge bay), air blast machine room, carbon source dosing system and power distribution station, backwashing wastewater pond is communicated with the bottom of filter tank main body by the counter-flushing pipeline 15 that filter tank bottom part body is laid, air blast machine room is communicated with the bottom of filter tank main body by air inlet pipeline 6, biofilter material 7 is provided with in the body of filter tank.
The filtrate of described filter tank body is equipped with end brick layer 14, supporting layer 13, sand filter blanket 12 from bottom to top successively.
The discharge bay of described filter tank body is communicated with the made water distribution weir 16 of filter tank body bilateral symmetry, this outer rim position, water distribution weir is provided with the weir plate 17 of notch cuttype by securing member, refer to Fig. 3, Fig. 4, Fig. 5, this weir plate is notch cuttype stainless steel weir plate, in the ladder plane of this weir plate, uniform interval is fixed with the stainless steel tube row 19 of connection downwards, and the material adopted arranged by this stainless steel tube is SS304; Under the lower end that stainless steel tube is arranged extend into water level, the water on such water distribution weir can directly enter in filter tank from stainless steel tube row without dissolved oxygen.The through hole 18 of described securing member makes longitudinal bar shaped, to adjust the height of weir plate at any time, with the water distribution weir of applicable difference water inlet height.
The water and air distributing of native system is primarily of 304 stainless steels and armored concrete composition, and material is durable in use; Water distribution and air distribution system percent opening are comparatively large, not easily block, are more suitable for sewage disposal.
Native system automaticity is high, the recoil in filter tank, degassedly all can accomplish automatic operation, reduces and manually measures; The filter bed degree of depth is large, reaches 1.8m ~ 2.4m, is greater than the 1.1 ~ 1.3m in general filter tank; Filtrate diameter is 2 ~ 3mm, and be greater than about the 1mm diameter of conventional sand filter, between filtrate, void content is large.These characteristics determines native system and has larger water environment capacity, effectively can reduce the backwash frequency in filter tank, saves energy consumption.
Prove according to related experiment, this design can avoid self the oxygenation problem in the running of filter tank completely, greatly saves carbon source dosage, reduces filter tank operating cost.
Claims (4)
1. a rearmounted denitrogenation biological filter system, it is characterized in that: comprise feed water flow gauge well, water inlet distribution channel, filter tank main body, piping lane, discharge bay, backwashing wastewater pond, backwash pump house, air blast machine room, carbon source dosing system and power distribution station, feed water flow gauge well is communicated with the delivery port of filter tank main body, piping lane is communicated with the water inlet of filter tank main body, pond is set out respectively outside piping lane, backwashing wastewater pond, backwash pump house, air blast machine room, carbon source dosing system and power distribution station, backwashing wastewater pond is communicated with the bottom of filter tank main body by the counter-flushing pipeline that filter tank bottom part body is laid, air blast machine room is communicated with the bottom of filter tank main body by air inlet pipeline, biofilter material is provided with in the body of filter tank.
2. rearmounted denitrogenation biological filter system according to claim 1, is characterized in that: the filtrate of described filter tank body is equipped with end brick layer, supporting layer, sand filter blanket from bottom to top successively.
3. rearmounted denitrogenation biological filter system according to claim 1, it is characterized in that: the discharge bay of described filter tank body is communicated with the made water distribution weir of filter tank body bilateral symmetry, this outer rim position, water distribution weir is provided with the weir plate of notch cuttype by securing member, this weir plate is notch cuttype stainless steel weir plate, in the ladder plane of this weir plate, uniform interval is fixed with the stainless steel tube row of connection downwards, under the lower end that stainless steel tube is arranged extend into water level.
4. rearmounted denitrogenation biological filter system according to claim 3, is characterized in that: the through hole of described securing member makes longitudinal bar shaped.
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| CN201420801101.4U CN204298145U (en) | 2014-12-16 | 2014-12-16 | A kind of rearmounted denitrification organisms filtration system |
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| CN201420801101.4U CN204298145U (en) | 2014-12-16 | 2014-12-16 | A kind of rearmounted denitrification organisms filtration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402115A (en) * | 2014-12-16 | 2015-03-11 | 天津诚信环球节能环保科技有限公司 | Rear denitrification and biofiltration system |
| CN113716803A (en) * | 2021-09-02 | 2021-11-30 | 华夏碧水环保科技有限公司 | Integrated enhanced denitrification sewage treatment device and treatment method |
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2014
- 2014-12-16 CN CN201420801101.4U patent/CN204298145U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402115A (en) * | 2014-12-16 | 2015-03-11 | 天津诚信环球节能环保科技有限公司 | Rear denitrification and biofiltration system |
| CN113716803A (en) * | 2021-09-02 | 2021-11-30 | 华夏碧水环保科技有限公司 | Integrated enhanced denitrification sewage treatment device and treatment method |
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