CN202415257U - Denitrification biofilter using anoxic biomembrance process - Google Patents
Denitrification biofilter using anoxic biomembrance process Download PDFInfo
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- CN202415257U CN202415257U CN2011205660724U CN201120566072U CN202415257U CN 202415257 U CN202415257 U CN 202415257U CN 2011205660724 U CN2011205660724 U CN 2011205660724U CN 201120566072 U CN201120566072 U CN 201120566072U CN 202415257 U CN202415257 U CN 202415257U
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Abstract
The utility model relates to a denitrification biofilter using an anoxic biomembrance process. The denitrification biofilter comprises a flocculent settling pool body divided into four groups of settling pools; the denitrification biofilter is characterized in that a pool wall is additionally arranged in the middle of the front half part of each group of settling pool, so as to form eight groups of filter pools; water collecting pools are arranged at bottoms of the filter pools; cover plates are arranged above the water collecting pools; gaps capable of allowing water to enter are formed between the cover plates and the water collecting pools; aerators and aerator pipes are uniformly distributed at the upper parts of the cover plates; gas and water distributing blocks are additionally arranged on the aerator pipes; and a water distributing groove is additionally formed in the upper part of each group of filter pool. The denitrification biofilter has the benefits as follows: the occupied land is small; the denitrification biofilter can serve as a deep bed filter tank or an anoxic biomembrance process denitrification biological filter to remove SS (Suspended solid), TN (Total Nitrogen) and TP (Total Phosphorous); through the adoption of the gas and water distributing blocks, water and gas are uniformly distributed and the interiors of the filter pools are free of maintenance in the whole life; the backwash water quantity, which is only 4% and generally cannot exceed 2%, is smaller; quartz sand with hard texture, no runoff or loss and no need of being replaced is adopted as a filler; and filtered water reaches urban non-drinking water standards, and flushing water for plant area greening and road flushing can be recycled.
Description
Technical field
The utility model belongs to the sewage, relates in particular to a kind of anoxic biomembrance process denitrification bio-filter that adopts the anoxic bio membrane process.
Background technology
At present, the flocculation sedimentation tank major function of Sewage Plant is for removing the total phosphorus in the water body, and its principle is to utilize chemical method in water body, to add Poly aluminum Chloride (PAC) to make the phosphorus deposition in the water body, is scraped into bucket by the mud scraper in the pond and enters storage basin.The overall length in its pond is 55.9 meters, and the pond is wide to be 34.25 meters, and the pond is 4.47 meters deeply, and available depth is 3.97 meters.Be divided into 4 group precipitation ponds in the pond, every group precipitation pond length is 45.35 meters, and wide is 8.4 meters, and every group equipment is equipped with a chain mud scraper and supporting bucket and excavating pump.The first half in every group precipitation pond is a distribution reservoir, and major equipment is 7 whisking appliances, and the whisking appliance major function is that uniform mixing adds the Poly aluminum Chloride (PAC) in the pond.The structure of flocculation sedimentation tank can't accomplish further to remove SS and the total nitrogen in the water.
The utility model content
The utility model is in order to overcome deficiency of the prior art; A kind of anoxic biomembrance process denitrification bio-filter is provided; On the basis of former flocculation sedimentation tank, transform and accomplish, can under the situation of not destroying former pond body, denitrification and deep-bed filtration function be organically combined; Realize denitrification and sand filtration function, guaranteed that SS, total nitrogen, the total phosphorus of water outlet do not exceed standard.
The utility model is realized a kind of anoxic biomembrance process denitrification bio-filter for realizing above-mentioned purpose through following technical scheme; Comprise the flocculation sedimentation tank pond body that is divided into four group precipitation ponds; The filtering basin and the distribution reservoir of every group precipitation pond first half is characterized in that: the mid-way of said every group precipitation pond first half is set up pool wall and is constituted eight groups of filtering basin, is provided with water collecting basin at the bottom of the pond of said filtering basin; Be provided with cover plate above the said water collecting basin; Be provided with the interval that can intake between said cover plate and the water collecting basin, said cover plate top is uniformly distributed with aeration head and aeration tube, sets up the water-gas distribution piece on the said aeration tube; Pebbles and silica sand are filled up in said water-gas distribution piece top, and distributing trough is set up on the top of said every group of filtering basin.
The distribution reservoir of said settling tank first half changes eight groups into by four groups, and sets up two groups of methyl alcohol scatterers and two whisking appliances.
The middle part in said four group precipitation ponds is provided with piping lane, and said piping lane mainly is made up of DN500, DN600, DN1200 stainless steel pipes, operated pneumatic valve and under meter.
The rear portion in said four group precipitation ponds is provided with outlet sump and backwashing wastewater pond, is provided with backwash pump in the said outlet sump, and said backwashing wastewater pond is other to be connected with backwashing wastewater pond pump sump, is provided with water pump in the pump sump of said backwashing wastewater pond.
Beneficial effect: take up an area of and lack, be particluarly suitable in the limited Sewage Plant transformation project in place.Similar at home and abroad technology has and surpasses the service experience in 30 years, guarantees that effluent quality can be stablized to reach one-level A.The technology flexible operation can be used as deep-bed filter and removes SS and TP, also can be used as anoxic biomembrance process denitrification bio-filter and removes SS, TN and TP synchronously.Adopt the water-gas distribution piece, distribute water and air is even, the inner maintenance-free in filter tank.The back flushing water yield is few, is merely 4%, generally is no more than 2%.The nitrogen that produces in the anoxic biomembrance process denitrification bio-filter need be driven away, and prevents that head loss is excessive, influences the back flushing frequency.Regularly drive away nitrogen through supporting technology.Filler adopts silica sand, and quality is hard, does not run off or loss, need not replace or add tail water TN is detected, and adds carbon source according to the amount of removing, and it is too much or very few to prevent to add carbon source, thereby influences effluent quality.Stable water outlet reaches city miscellaneous water standard, but the wash-down water of the greening of reuse plant area, road flushing and dehydration machine room.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the longitudinal sectional drawing of the utility model structure;
Fig. 3 is the transverse cross-sectional view of the utility model structure;
Fig. 4 is the process flow sheet of the utility model structure.
Among the figure: 1, filtering basin, 2, distribution reservoir, 3, pool wall, 4, water collecting basin, 5, cover plate; 6, water-gas distribution piece, 7, distributing trough, 8, piping lane, 9, outlet sump, 10, the backwashing wastewater pond; 11, backwash pump, 12, backwashing wastewater pond pump sump, 13, the methyl alcohol scatterer, 14, whisking appliance.
Embodiment
Below in conjunction with preferred embodiment; Details are as follows to the embodiment that provides according to the utility model: see accompanying drawing for details, a kind of anoxic biomembrance process denitrification bio-filter comprises the flocculation sedimentation tank pond body that is divided into four group precipitation ponds; The filtering basin 1 and the distribution reservoir 2 of every group precipitation pond first half; The equipment component of flocculation sedimentation tank is removed, wherein removed four chain mud scrapers and water outlet weir plate, remove four electronic flashboards in the pond.
Transformation to four group precipitation pond first halfs: the mid-way of said every group precipitation pond first half is set up pool wall 3 and is constituted eight groups of filtering basin; Fill and lead up bucket with concrete; And on the basis of former pond base plate, build the C15 plain concrete after 10 centimeters, make pond base plate maintenance level; Every single group filter tank is of a size of long 24.8 meters wide 3.775 meters; Set up two water collecting basins 4 at the bottom of the pond of said filtering basin, be provided with stainless steel cover plate 5 above wide 60 centimeters high 60 centimeters said water collecting basins of water collecting basin, be provided with the interval that can intake between said cover plate and the water collecting basin, guarantee that the water on top normally flows in the water collecting basin.Said cover plate top is uniformly distributed with aeration head and aeration tube (not shown); Set up water-gas distribution piece 6 on the said aeration tube; Pebbles and silica sand are filled up in said water-gas distribution piece top, and the height of filling is 1.372 meters, and the diameter of pebbles carries out the transition to 0.5 centimeter by 6 centimeters; Pebbles is laid in layering, drops into silica sand on the pebbles top of minimum diameter.Two distributing troughs 7 are set up on the top of said every group of filtering basin.Said distributing trough always is equipped with methyl alcohol scatterer and two whisking appliances.The water distribution groove width is 61 centimeters, and height is 76.5 centimeters, guarantees the filter tank water inlet evenly.
Transformation to middle part, four group precipitation ponds: the middle part in said four group precipitation ponds is provided with piping lane 8, removes original pool wall and increases the part pool wall newly.In the wide and high constant following pond of situation, transform long 8 meters piping lane as.Its inside is mainly, and increases equipment such as operated pneumatic valve and under meter.Said piping lane mainly is made up of DN500, DN600, DN1200 stainless steel pipes, operated pneumatic valve (not shown) and under meter (not shown).
The rear portion in said four group precipitation ponds is provided with outlet sump 9 and backwashing wastewater pond 10; Be provided with backwash pump 11 in the said outlet sump; Said backwashing wastewater pond is other to be connected with backwashing wastewater pond pump sump, is provided with the water pump (not shown) in the pump sump of said backwashing wastewater pond.Remove original pool wall, change two groups of pond bodies at latter half, one of which is an outlet sump; It is wide to be 16.45 meters; Length is 12.3 meters, and the water outlet after it mainly act as and collects denitrification and filter enters the uv sterilisation pond; Also have one to act as back flushing the water source is provided, increase by two backwash pumps simultaneously.Another pond body is a backwashing wastewater, and it is wide, and to be 16.45 meters long be 12.3 meters, mainly act as the waste water that collection is carried out back flushing to the filter tank, and be equipped with a backwashing wastewater pond pump sump 12 aside, is equipped with 3 water pumps in its well, finally enters storage basin to waste water.
The distribution reservoir 2 of former settling tank first half changes eight groups into by four groups under the constant situation of former overall size, former dephosphorization chemical feed pipe keeps, and increases by two groups of methyl alcohol scatterers 13 and two whisking appliances 14.
Increase the supporting structures of part, outside denitrification filter pool, build between a methyl alcohol dosing, two groups of ground methanol storage tanks are mainly used in and supply with the necessary carbon source of denitrifying bacteria growth; Outside denitrification filter pool, build an air blast machine room, the backwashing function that is mainly used in denitrification filter pool provides source of the gas.
Principle of work
Anoxic biomembrance process denitrification bio-filter adopts the silica sand of special requirement and shape as the biological extension film medium of denitrification, and dark simultaneously bed is again nitrate nitrogen (NO
3-N) and the fabulous removal structures of suspended substance.The specific surface area of 2-4 millimeter medium is bigger.1.83m the filter bed of dark medium is enough to avoid channelling or penetration phenomenon, even generation sludge bulking of front-end processing technology or abnormal conditions can not make filter bed generation water conservancy penetrate yet.Which suspended substance medium have hold back effect, and is interval at backwashing period, every m
2Filtration area can guarantee to hold back>=suspended solid of 7.3kg.The high characteristic of solids load has prolonged the filter cycle greatly, has reduced the back flushing number of times, and can easily tackle abnormal conditions such as peak flow or treatment plant's sludge bulking.Suspended substance being trapped not only can increase head loss, the solids that therefore needs back flushing to remove to hold back.Because the solids load is high, the bed body is dark, therefore need high-intensity back flushing.Anoxic biomembrance process denitrification bio-filter employing gas, water are worked in coordination with and are carried out back flushing.Backwashing sewage water generally turns back to the leading portion biological processing unit.Because the cutoff performance of filter bed solids high loading, backwash water is no more than 4% of treatment plant's water yield, usually＜2%).
During the anti-nitration reaction, nitrogen is assembled in reaction tank, sewage detours around being forced in bubble in the medium space, has dwindled the surface size of medium, has strengthened contacting of mikrobe and afternoon nap, has improved treatment effect.The gathering of bubble can increase head loss, and therefore, the system's traffic coverage before back flushing is carried out need regularly disperse bubble.As long as close the water inlet of a certain reaction tank in short-term, moment pumps into backwashing water, the accumulative nitrogen bubble is dispersed discharge outside the pond, reduces head loss.This process does not influence the normal handling flow, does not need the halt system operation.
Remove suspended solid: contain BOD among every milligram of TSS
5Therefore 0.4-0.5 milligram when removing in the water outlet suspended solid, has also reduced the BOD in the water outlet
5In addition, suspended solid contains nitrogen, phosphorus and other heavy metal substances in the water outlet, removes suspended solid and can reduce the above above-mentioned impurity of 1mg/L usually, cooperates suitable chemical treatment, the water outlet total phosphorus is stablized reduced to below the 0.3mg/L.Anoxic biomembrance process denitrification bio-filter can easily satisfy turbidity＜2NTU or the TSS＜5mg/L (requirement of TSS＜2mg/L) usually.
The composition of denilrification system and specification
Pool structure: Steel Concrete or steel design, circle or rectangle
At the bottom of the pond, filter tank: adopt no mouth aeration; Stainless steel aeration master, segmental bronchus; The T-shape water-gas distribution domain of the anti-strong 34.5Mpa of plastic shell.
Filtration medium: homogeneous particle filtrate, effective size of grain 2～4mm; Medium layer 1.37m.
The support packing course: total thickness 500mm, by the gravel cross-level distribution of five kinds of specifications.
Filter tank control: curved weir plate water inlet splitter and standpipe go out water controller and form; Even by the valve open and close control water yield.
Air is washed in back flushing: import the back flushing air by Root's blower through bottom, whole filter tank.
Backwashing water: at the bottom of transporting to whole pond by the centrifugal pump of low lift.
The filter tank valve: pneumatic or electronic twin-rotor housing valve comprises segregaion valve.
Medicine system: comprise methyl alcohol storage and full-automatic medicine system, also can be used for adding other chemical agents.
Instrument: the PLC programmable remote control, the many interface screen of man-machine dialogue can provide the output of master control system or SCADA system.
Comprise under meter, analyser, water level switch, field control cabinet and warning.
System operation: move automatically or MC, back flushing and nitrogen discharge (Bumping) are controlled by time variable.
Head requires: require depth of water 1.8-2.4m usually, also can decide according to particular case.
The system integration: system can combine with other technology of treatment plant, removes like dephosphorization, denitrogenation and the virus of whole process.
Technical characterstic
(1) biomembrance process Treating Municipal Sewage: utilize the advantage that the bio membrane process microorganism concn is high, reaction efficiency is high, make dwell time of sewage significantly reduce, save and take up an area of, technical process is shortened, and meets the technology that advanced treatment requires.
The many usefulness of (2) one chis, save cost: anoxic biomembrance process denitrification bio-filter is removed SS and is substituted traditional sedimentation and filtration ditch, can guarantee that water outlet SS satisfies the water outlet requirement of one-level A, saves follow-up advanced treatment expense.All right additional carbon as the usefulness of checking on of water outlet YN, and is reserved more strict water outlet requirement as anoxic biomembrance process denitrification bio-filter.
(3) water-gas distribution technology: the water-gas distribution technology has solved two hang-ups in filter tank, the ununiformity of distribute water and air and betting contest problem.
(4) air water back washing technology: reduce the water loss of back flushing to greatest extent, and improve cleaning frequency, the minimizing back flushing number of times of back flushing to greatest extent.
(5) drive away nitrogen technology: the nitrogen that produces in the anoxic biomembrance process denitrification bio-filter need regularly be driven away, and prevents that head loss is excessive, influences backwashing period.
(6) carbon source adds control techniques: TN detects to tail water, adds carbon source according to the amount of removing, and it is too much or very few to prevent to add carbon source, thereby influences effluent quality.
Embodiment
Economic and technological development zone, Tianjin first sewage work has mainly born the processing of most of sewage in economic and technological development zone, Tianjin and trade effluent since 1999 are completed and move, the technology of employing is the SBR method; Pollutent COD in the existing water outlet, BOD, SS all satisfy " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) requirement of secondary standard; For responding the policy of national energy-saving and emission-reduction; Further improve Binhai New Area in Tianjin and even whole Bohai Rim water surrounding; Promote the Binhai New District investment environment; Development area first sewage work's parent pollutant emission standard can not satisfy present requirement; According to " integrated wastewater discharge standard " (Tianjin) (DB12/356-2008) in 4.1.1.2 bar regulation " municipal sewage plant that has built up transforms; draining is carried out in (GB18918-2002) " pollution discharge standard primary standard B standard " " and 4.1.1.3 bar regulation " municipal sewage plant's draining of having built up should reach ' pollution discharge standard primary standard B standard ' among the GB18918-2002 before 31 days December in 2010 ", Gu economic and technological development zone, Tianjin first sewage work is carried out upgrading in 2010 years.Owing to can not influence sewage work and produce normally, thus the execution conditions that only combine the our factory flocculation sedimentation tank in the raw waste water factory is transformed.It transform novel anoxic biomembrance process denitrification bio-filter as.
The above only is the preferred embodiment of the utility model, is not the structure of the utility model is done any pro forma restriction.Every technical spirit according to the utility model is to any simple modification, equivalent variations and modification that above embodiment did, all still belongs in the scope of technical scheme of the utility model.
Claims (4)
1. an anoxic biomembrance process denitrification bio-filter comprises the flocculation sedimentation tank pond body that is divided into four group precipitation ponds, the filtering basin and the distribution reservoir of every group precipitation pond first half; It is characterized in that: the mid-way of said every group precipitation pond first half is set up pool wall and is constituted eight groups of filtering basin; Be provided with water collecting basin at the bottom of the pond of said filtering basin, be provided with cover plate above the said water collecting basin, be provided with the interval that can intake between said cover plate and the water collecting basin; Said cover plate top is uniformly distributed with aeration head and aeration tube; Set up the water-gas distribution piece on the said aeration tube, pebbles and silica sand are filled up in said water-gas distribution piece top, and distributing trough is set up on the top of said every group of filtering basin.
2. anoxic biomembrance process denitrification bio-filter according to claim 1 is characterized in that: the distribution reservoir of said settling tank first half changes eight groups into by four groups, and sets up two groups of methyl alcohol scatterers and two whisking appliances.
3. anoxic biomembrance process denitrification bio-filter according to claim 1, it is characterized in that: the middle part in said four group precipitation ponds is provided with piping lane, and said piping lane mainly is made up of DN500, DN600, DN1200 stainless steel pipes, operated pneumatic valve and under meter.
4. anoxic biomembrance process denitrification bio-filter according to claim 1; It is characterized in that: the rear portion in said four group precipitation ponds is provided with outlet sump and backwashing wastewater pond; Be provided with backwash pump in the said outlet sump; Said backwashing wastewater pond is other to be connected with backwashing wastewater pond pump sump, is provided with water pump in the pump sump of said backwashing wastewater pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205660724U CN202415257U (en) | 2011-12-30 | 2011-12-30 | Denitrification biofilter using anoxic biomembrance process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205660724U CN202415257U (en) | 2011-12-30 | 2011-12-30 | Denitrification biofilter using anoxic biomembrance process |
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| Publication Number | Publication Date |
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| CN202415257U true CN202415257U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205660724U Withdrawn - After Issue CN202415257U (en) | 2011-12-30 | 2011-12-30 | Denitrification biofilter using anoxic biomembrance process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491512A (en) * | 2011-12-30 | 2012-06-13 | 天津泰达新水源科技开发有限公司 | Denitrified deep bed biological filter tank |
| CN107381833A (en) * | 2017-08-04 | 2017-11-24 | 浙江水美环保工程有限公司 | A kind of sewage depth bed denitrogenation processing system and its processing method |
-
2011
- 2011-12-30 CN CN2011205660724U patent/CN202415257U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491512A (en) * | 2011-12-30 | 2012-06-13 | 天津泰达新水源科技开发有限公司 | Denitrified deep bed biological filter tank |
| CN107381833A (en) * | 2017-08-04 | 2017-11-24 | 浙江水美环保工程有限公司 | A kind of sewage depth bed denitrogenation processing system and its processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20131002 |
|
| RGAV | Abandon patent right to avoid regrant |