CN109368769A - A kind of autotrophic type deep-bed filter using novel compound filling - Google Patents
A kind of autotrophic type deep-bed filter using novel compound filling Download PDFInfo
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- CN109368769A CN109368769A CN201811562560.0A CN201811562560A CN109368769A CN 109368769 A CN109368769 A CN 109368769A CN 201811562560 A CN201811562560 A CN 201811562560A CN 109368769 A CN109368769 A CN 109368769A
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- filter
- backwash
- type deep
- filter tank
- water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
Abstract
The invention discloses a kind of autotrophic type deep-bed filters using novel compound filling, water inlet end and backwash water outlet are provided with above the filter tank, wherein, the water inlet end is equipped with distributing channel, the backwash water outlet is equipped with backwash outlet canal, it is disposed with filter material layer from top to bottom in the filter tank, supporting layer and filter block layer, the filter block layer is connected with gas distribution water distribution system, between the distributing channel and filter tank, filtrate blocking apparatus is provided between backwash outlet canal and the filter tank, the filler of the filter material layer is the electronics slow-release filler formed after the compound mineral aggregate of sulphur iron is processed.The present invention uses deep bed denitrification filter pool of the new sulfur iron complex mineral filtrate as filler, additional organic carbon source is not necessarily to, it is possible to prevente effectively from COD secondary pollution problem.
Description
Technical field
It is specially a kind of using novel compound filling the present invention relates to sewage treatment field and advanced treatment of wastewater technology
Autotrophic type deep-bed filter.
Background technique
The pollution problem of nitrogen is always the emphasis of water prevention and cure of pollution concern in sewage.
Denitrogenation technology both economical at present is bio-denitrification technology.Bioanalysis denitrogenation is mainly the ammonia by microorganism
Change, nitrification and denitrification remove nitrogen.Denitrification is divided into two class of heterotrophism and autotrophy.Heterotrophic denitrification be heterotrophic microorganism with
Organic carbon source is as electron donor, and using nitrate as electron acceptor, being acted on by biological reducing by nitrate reduction is nitrogen
Process.Autotrophic denitrification refers to that autotrophic denitrification bacterium utilizes inorganic carbon (CO2、HCO3 -、CO3 2-) it is used as carbon source, mainly with inorganic matter
(S、S2-、H2、S2O3 2-、Fe、Fe2+、NH4+Deng) as nitrate nitrogen reduction electron donor complete bacteria metabolism, by nitre
Hydrochlorate is reduced to the process of nitrogen.
At present using it is more be heterotroph denitrification technology, this technology needs additional investment organic matter to carry out carbon source
Supplement, it is at high cost and also bring new organic contamination.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of autotrophic type deep-bed filter using novel compound filling, the filter tank
The main effect components of filter material layer are the electronics slow-release filler formed after the compound mineral aggregate of sulphur iron is processed, this novel to fill out
Material is other than it can substitute traditional filtrate and realize crown_interception, or autotrophic type denitrifying bacteria provides electronics, by solid
Sulfur and iron elements slow release participates in anti-nitration reaction in filtrate, realizes sewage water denitrification.
The technical solution adopted by the present invention to solve the technical problems are as follows:
A kind of autotrophic type deep-bed filter using novel compound filling, the filter tank top are provided with water inlet end and backwash
Water outlet, wherein the water inlet end is equipped with distributing channel, and the backwash water outlet is equipped with backwash outlet canal, the filter
Filter material layer, supporting layer and filter block layer are disposed in pond from top to bottom, the filter block layer is connected with gas distribution water distribution system, described
It is provided with filtrate blocking apparatus between distributing channel and filter tank, between backwash outlet canal and the filter tank, for preventing anti-
Filterins media run-off when flushing, the filler of the filter material layer are the electronics slow-release filler formed after the compound mineral aggregate of sulphur iron is processed.
As an improvement of the above technical solution, the filter material layer with a thickness of 1.8~2.4m.Sulphur iron grandidierite in filter material layer
Effective element sulphur ingredient and effective ferro element ingredient in material can produce basicity respectively and disappear when carrying out anti-nitration reaction
Basicity is consumed, by the optimization design to two kinds of element ratios, so that the basicity of sewage maintains stable level.
As an improvement of the above technical solution, the supporting layer uses the cobble of 5 kinds of gradations, with a thickness of 0.4~0.5m.
As an improvement of the above technical solution, the filter block layer uses HDPE filter block, is mainly used for gas distribution and water distribution.
As an improvement of the above technical solution, the gas distribution water distribution system is realized by PLC automatic program and is automatically controlled instead
It rinses, the counter-flushing process in filter tank are as follows: air purge → air water joint → washing.
As an improvement of the above technical solution, the workflow in the filter tank includes: normal water inlet → expulsion nitrogen → sky
Gas backwash → air water backwash → individually washing.
Bring beneficial effect of the present invention has:
Traditional deep-bed filter, as filtrate, realizes that the denitrification of sewage is handled by adding carbon source using gravel.With compared with
The heterotroph deep-bed filter of common additional carbon is compared, and the present invention uses depth of the new sulfur iron complex mineral filtrate as filler
Bed denitrification filter pool, is not necessarily to additional organic carbon source, it is possible to prevente effectively from COD secondary pollution problem.Meanwhile sludge output drops significantly
It is low, backwash frequency can be reduced, energy consumption is reduced.
Meanwhile from cost, the sulphur iron composite filtering material of slow-release is more cheap compared with organic carbon source, and is easy to transport
Storage.
Detailed description of the invention
With reference to the accompanying drawing and specific embodiment the invention will be further described,
Attached drawing 1 is the structural schematic diagram of 1 autotrophic type deep-bed filter of embodiment；
Attached drawing 2 is the test effect schematic diagram one of embodiment 4；
Attached drawing 3 is the test effect schematic diagram two of embodiment 4.
Reference name corresponding to each serial number is as follows in figure:
1- distributing channel；2- filter material layer；3- supporting layer；4- filter block layer；5- gas distribution water distribution system；6- backwashes outlet canal；7-
Filtrate blocking apparatus.
Specific embodiment
Embodiment 1
A kind of autotrophic type deep-bed filter using novel compound filling.
Referring to Fig.1, the top in filter tank is respectively water inlet end and backwash water outlet, wherein water inlet end is equipped with distributing channel
1, backwash water outlet is equipped with backwash outlet canal 6.Between distributing channel 1 and filter tank, backwash between outlet canal 6 and filter tank
It is provided with filtrate blocking apparatus 7, for preventing the filterins media run-off in backwash.Inlet pipeline is set below distributing channel 1, the position
Locate while being provided with backwash inlet pipeline；7 bottom of outlet canal setting backwash outlet pipeline is backwashed, outlet canal 7 is backwashed
Outlet pipeline is arranged in right side.
The distributing channel 1 of the present embodiment uses sub-unit irrigation channel distribution, and for biochemical treatment, water inlet is uniform and stable
, but the resistance of each filter tank processing unit filtrate is to change with the propulsion of time is used, under different working conditions
Resistance is different, the processing water of rinsing unit uniformly can be shared other filter tank processing units using irrigation channel distribution, protects
Hinder processing capacity.
Filter material layer 2, supporting layer 3 and filter block layer 4 are disposed in filter tank from top to bottom, filter block layer 4 is communicated with gas distribution cloth
Water system 5, gas distribution water distribution system 5 refer specifically to the backwash inlet pipeline for being connected to left side, are connected to the backwash gas circuit on right side.
Wherein, the filler of filter material layer 2 is the electronics slow-release filler formed after the compound mineral aggregate of sulphur iron is processed, filter material layer 2
With a thickness of 2m.Effective element sulphur ingredient and effective ferro element ingredient in the compound mineral aggregate of sulphur iron, when carrying out anti-nitration reaction,
It can produce basicity and consumption basicity respectively, by the optimization design to two kinds of element ratios, so that the basicity of sewage maintains
Stable level.
Supporting layer 3 uses the cobble of 5 kinds of gradations, with a thickness of 0.45m.
Filter block layer 4 uses finished product HDPE filter block, is mainly used for gas distribution and water distribution, lifelong with no vulnerable part, once mounting
The advantages of no replacement is required.
Gas distribution water distribution system 5 is realized by PLC automatic program and automatically controls backwash, the counter-flushing process in filter tank are as follows: gas
Wash → air water joint → washing.PLC automatic program is existing mature technology, by PLC controller collocation solenoid valve control backwash
The movement of pump, air blower or other gas supply devices.
The workflow in the present embodiment filter tank includes: normal water inlet → expulsion nitrogen → air backwash → air water backwash → mono-
Solely washing.
The autotrophic type deep-bed filter of the utility model compounded mix, filler are the electronics formed after the compound mineral aggregate of sulphur iron is processed
Slow-release filler, involved reaction principle are as follows:
Elemental sulfur autotrophic denitrification process: 6NO3 -+5S+2H2O→3N2+5SO4 2-+4H+；
Compound state iron autotrophic denitrification process: NO3 -+5Fe2++6H+→0.5N2+5Fe3++3H2O；
Acid is produced in elemental sulfur denitrification process, promotes Fe (II) dissolution in divalent iron ore, forms the reaction of multiphase denitrogenation dephosphorizing
Hot-zone, it is more efficient；
Nitrate reduction is nitrogen using divalent iron ore as electron donor by autotrophic microbe, synchronous to generate Fe3+With phosphorus
Hydrochlorate is implemented in combination with dephosphorization.
Embodiment 2
Comparative test.
Compared with traditional heterotroph deep-bed filter:
Traditional deep-bed filter, as filtrate, realizes that the denitrification of sewage is handled by adding carbon source using gravel.With compared with
The heterotroph deep-bed filter of common additional carbon is compared, the anti-nitre of deep bed using new sulfur iron complex mineral filtrate as filler
Change filter tank and be not necessarily to additional organic carbon source, it is possible to prevente effectively from COD secondary pollution problem.Meanwhile sludge output substantially reduces, and can subtract
Frequency is backwashed less, reduces energy consumption.Meanwhile the sulphur iron composite filtering material of slow-release is more low compared with organic carbon source from cost
It is honest and clean, and it is easy to transport storage.
Important technological parameters:
Denitrogenation volumetric loading: 600-900g/m3/d；
Sludge yield: 0.1g SS/g N；
Filtering velocity: 5-10m/h；
Backwash frequency: 1 times/week；
HRT:0.6-1.0h；
About 0.05-0.08 yuan/ton of operating cost；
Conventional denitrification filter tank: ton water running cost 0.1-0.2 member backwashes the frequency 1 time/1 day, sludge yield 0.5g
SS/g N。
Embodiment 3
Comparative test.
With it is existing using sulphur mine or iron ore as the denitrification filter pool of filler compared with.
Test structure see the table below 1.
Embodiment 4
Application of the autotrophic type deep-bed filter of the utility model compounded mix in the processing of certain textile waste.
2.5 ten thousand m for the treatment of scale3/d。
(1) design standard
(2) effect
Referring to Fig. 2, Fig. 3, denitrification system influent COD average value is 52mg/L, average effluent COD 50mg/L；
Denitrification tank water inlet TN average value 19.04mg/L is discharged TN average value under the action of adding certain carbon source
9.76mg/L；
Ton water running cost is 0.08 yuan/ton.
Specific embodiments of the present invention are described in detail above, but content is only presently preferred embodiments of the present invention,
It should not be considered as limiting the scope of the invention.Any changes and modifications in accordance with the scope of the present application,
It should still be within the scope of the patent of the present invention.
Claims (5)
1. a kind of autotrophic type deep-bed filter using novel compound filling, it is characterised in that: be provided with above the filter tank into water
End and backwash water outlet, wherein the water inlet end is equipped with distributing channel, and the backwash water outlet is equipped with backwash water outlet
Canal is disposed with filter material layer, supporting layer and filter block layer in the filter tank from top to bottom, and the filter block layer is connected with gas distribution water distribution
System is provided with filtrate blocking apparatus between the distributing channel and filter tank, between backwash outlet canal and the filter tank, is used for
The filterins media run-off in backwash is prevented, the filler of the filter material layer is the electronics slow-release formed after the compound mineral aggregate of sulphur iron is processed
Filler.
2. autotrophic type deep-bed filter according to claim 1, it is characterised in that: the filter material layer with a thickness of 1.8~
2.4m。
3. autotrophic type deep-bed filter according to claim 1, it is characterised in that: the supporting layer uses the ovum of 5 kinds of gradations
Stone, with a thickness of 0.4~0.5m.
4. autotrophic type deep-bed filter according to claim 1, it is characterised in that: the filter block layer uses HDPE filter block.
5. autotrophic type deep-bed filter according to claim 1, it is characterised in that: the workflow in the filter tank includes: just
Normal water inlet → expulsion nitrogen → air backwash → air water backwash → individually washing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562560.0A CN109368769A (en) | 2018-12-20 | 2018-12-20 | A kind of autotrophic type deep-bed filter using novel compound filling |
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| CN201811562560.0A CN109368769A (en) | 2018-12-20 | 2018-12-20 | A kind of autotrophic type deep-bed filter using novel compound filling |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112919732A (en) * | 2021-01-26 | 2021-06-08 | 中电环保股份有限公司 | UAD biological filter tower system based on sulfur autotrophy and denitrification method |
| CN114275892A (en) * | 2022-01-11 | 2022-04-05 | 苏州科特环保股份有限公司 | Heterotrophic autotrophic integrated denitrification reactor |
| CN114477433A (en) * | 2021-12-29 | 2022-05-13 | 江苏熊猫环境技术有限公司 | Denitrifying biological filter |
| CN115367872A (en) * | 2022-09-13 | 2022-11-22 | 四川发展环境科学技术研究院有限公司 | Sewage denitrification processing system based on sulfur autotrophic denitrification matrix |
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