CN104386808B - A kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source - Google Patents
A kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source Download PDFInfo
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- CN104386808B CN104386808B CN201410711009.3A CN201410711009A CN104386808B CN 104386808 B CN104386808 B CN 104386808B CN 201410711009 A CN201410711009 A CN 201410711009A CN 104386808 B CN104386808 B CN 104386808B
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source, comprise flocculation basin, flocculation basin arranges water inlet and delivery port, and flocculation basin bottom surface arranges aeration head, and the density of aeration head reduces gradually along water (flow) direction; Flocculation basin water inlet is provided with carbon source throwing device; Described system also comprises the sedimentation basin being communicated with flocculation basin, and storage basin, mud discharge line and sludge return pipe, and the entrance of storage basin is communicated with sedimentation basin, and outlet is communicated with sludge return pipe and mud discharge line respectively; Sludge return pipe is communicated with flocculation basin. The invention has the beneficial effects as follows: at the bottom of aeration head is arranged on flocculation basin, reduced floor space, saved cost of investment; Aeration in flocculation reaction, also promoted fully mixing of flocculant and sewage and mud, and in water (flow) direction, the density of aeration head reduces, and prevents the floccule body fragmentation that the initial stage forms when oxygen is provided, and flocculating effect is better, can efficiently remove ammonia nitrogen.
Description
Technical field
The present invention relates to environmental technology field, be specifically related to a kind of enhanced flocculation for low ammonia nitrogen water source-aerobic nitrification and process systemSystem.
Background technology
In recent years, along with the expansion day by day of urban population and the development of industrial or agricultural, water environment pollution accident occurred repeatedly,Many lakes and reservoir cause body eutrophication because of the discharge of nitrogen, phosphorus etc., and serious threat is to human being's production and the ecological balance. NoOnly like this, worse and worse, and people improve the requirement of running water the influent quality that the deterioration at water source causes water treatment plant day by day, because ofThis, utilize efficient and rational mode to improve the water-purifying process of water treatment plant also urgent all the more.
The processing method of removing at present sewage nitride is mainly biological denitrificaion method, utilizes the physiology merit of nitrifier and denitrifying bacteriumNitride in sewage can be converted into nitrogen etc. And traditional handicraft is pressed in existing waterworks: flocculation, precipitation, filtration, sterilization,To the low ammonia nitrogen in water inlet, substantially without removal ability, and there is dead angle, the shortcoming that flocculating effect is not high in conventional mesh flocculation basin. Separately, consider the restriction of water factory's investment construction and floor space outward, newly-built a set of biochemical system, is specifically designed to former water low-concentration ammonia-nitrogenRemoval, be obviously rational not economically, also can bring managerial trouble.
Summary of the invention
Problem to be solved by this invention is, the deficiency existing for above-mentioned water treatment system, provide one can effectively flocculate,The low ammonia nitrogen water inlet of the processing that existing water factory is transformed that cost of investment is low, floor space is little improves the treatment system of flocculating effect.
The present invention for solving the problems of the technologies described above adopted technical scheme is: a kind of enhanced flocculation for low ammonia nitrogen water source-aerobicNitrated treatment system, comprises flocculation basin, and flocculation basin is provided with water inlet and delivery port, and the bottom surface of flocculation basin is provided with aeration head,The density of aeration head reduces gradually along water (flow) direction.
Described flocculation basin water inlet is provided with carbon source throwing device and is connected with water inlet pipe with mud return line.
Described enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source also comprises the sedimentation basin being communicated with flocculation basin, precipitationPond offers delivery port and mud discharging mouth.
Described enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source also comprises storage basin, mud discharge line and mudReflux line, the entrance of storage basin is communicated with the mud discharging mouth of sedimentation basin, outlet respectively with sludge return pipe and mud discharge lineBe communicated with; On described sludge return pipe, be provided with sludge reflux pump, sludge return pipe is communicated with flocculation basin import.
Described flocculation basin internal vertical is evenly arranged at intervals with multiple grids in the water surface and water (flow) direction.
Described sedimentation basin inside is furnished with inclined-pipe settler.
The invention has the beneficial effects as follows: 1, aeration head is arranged on the bottom surface of flocculation basin, aeration in flocculation reaction, on the one handFor the nitration reaction in pond provides oxygen, accelerate on the other hand the stirring of flocculation basin inside, prevent that mud is at pond bottom sediments, flocculationAgent can fully mix with sewage and mud, forms fast larger floccule body, and in water (flow) direction, the density of aeration headReduce, aeration intensity weakens, and can prevent the floccule body fragmentation that the initial stage forms, and the anti-shock loading of floccule body improves, flocculation effectFruit is better. 2, the mud refluxing is that sedimentation basin has supplemented nitrifier, and the carbon source throwing device of water inlet provides carbon source, and it is heavy to have promotedNitration reaction in pond, shallow lake, the removing ammonia of raising system. 3,, according to different water quality, aeration intensity can be controlled, mud returnsStream, than (flow-rate ratio of returned sludge and pending water inlet) and carbon source dosage, improves removing ammonia. 4, system is for existingThe structures of water supply plant carry out process modification, realize the efficient target of removing ammonia nitrogen, eliminate the healthy wind that DBPs bringsDanger, guarantees the safe and sanitary of drinking water, and has reduced floor space, reduces cost of investment, and operational management is convenient.
Accompanying drawing
Fig. 1 is process chart of the present invention.
Fig. 2 is the floor map of a specific embodiment of the present invention.
Wherein: 1, inlet channel; 2, carbon source throwing device; 3, flocculation basin; 4, grid; 5, aeration head; 6, mud returnsStream pipeline; 7, aerated conduit; 8, gallery; 9, sedimentation basin; 10, water outlet gallery; 11, outlet conduit; 12, storage basin;13, sludge reflux pump; 14, inclined-pipe settler; 15, sludge return pipe.
Detailed description of the invention
For a better understanding of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
A kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source as shown in Figure 2, comprises inlet channel 1, waddingSolidifying pond 3 and outlet conduit 11, flocculation basin 3 is provided with water inlet and delivery port, water inlet and inlet channel 1 and sludge refluxPipe 6 is communicated with, and delivery port is communicated with outlet conduit 11, and the bottom surface of described flocculation basin 3 is provided with aeration head 5, aeration head 5 and establishingPut at the aerated conduit 7 of flocculation basin 3 outsides and be communicated with, on the one hand for the biochemical reaction in pond provides oxygen, make on the other hand flocculationAgent fully mixes with sewage and mud; The layout density of aeration head 5 reduces gradually along water (flow) direction, the wadding that the initial stage that prevented formsSolidifying body fragmentation.
Described flocculation basin 3 water inlets are also provided with carbon source throwing device 2, add carbon source from this device, promote nitration reaction,Carbon source amount adds by actual conditions.
Described enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source also comprises the sedimentation basin 9 being communicated with flocculation basin 3,Between described sedimentation basin 9 and flocculation basin 3, be provided with gallery 8, sedimentation basin 9 is offered water outlet gallery and mud discharging mouth, described water outlet corridorRoad is communicated with outlet conduit 11.
Described sedimentation basin 9 inside are provided with water outlet gallery 10, and water outlet gallery 10 is communicated with outlet conduit 11, in sedimentation basin 9Supernatant enters water outlet gallery 10 and gathers rear inflow outlet conduit 11, proceeds subsequent technique processing.
Described enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source also comprises storage basin 12, mud discharge line 15With sludge return pipe 6, the entrance of storage basin 12 is communicated with the mud discharging mouth of sedimentation basin 9, outlet respectively with sludge return pipe 6Be communicated with mud discharge line 15; On described sludge return pipe 6, be provided with sludge reflux pump 13, sludge return pipe 6 withFlocculation basin water inlet is communicated with, and the mud part in sedimentation basin 9 refluxes and enters flocculation basin 3, and remainder is through mud discharge line15 discharge, and the mud of backflow is that flocculation basin 3 has brought nitrifier; Return sludge ratio (the flow of returned sludge and treatment sewageThan) can regulate according to actual conditions.
Described flocculation basin 3 internal vertical are evenly arranged at intervals with multiple grids 4 in the water surface and water (flow) direction, to accelerate floccule bodyForm.
Described sedimentation basin 9 inside are furnished with inclined-pipe settler 14, with the precipitation of accelerate sludge floc particle.
Embodiment 1, a kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source as shown in Figure 2, its system is establishedPut all as mentioned above consistent with implementation step, wherein:
Return sludge ratio is 20%; Add carbon source-sodium bicarbonate by carbon source throwing device, keeping sewage basicity in pond is 5mmol/L;Flocculation basin 3 is equally divided into three parts along water (flow) direction, and aeration head 5 is followed successively by 15/m at the packing density of this three part2，10Individual/m2, 5/m2; Aeration intensity is 80m3/(m2·h)。
Embodiment 2, a kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source as shown in Figure 2, its system is establishedPut all consistent as described in Example 1 with implementation step, divided by lower setting: aeration intensity is 60m3/(m2·h)。
Embodiment 3, a kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source as shown in Figure 2, its system is establishedPut all consistent as described in Example 1 with implementation step, divided by lower setting: return sludge ratio is 10%.
Embodiment 4, a kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source as shown in Figure 2, its system is establishedPut all consistent as described in Example 1 with implementation step, divided by lower setting: sewage basicity is 10mmol/L.
Embodiment 1, embodiment 2, embodiment 3 and embodiment 4 denitrifications are processed front and back sewage nitrogen content in table 1.
Table 1 embodiment denitrification is processed front and back sewage containing ammonia nitrogen amount
| Index | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Influent ammonia nitrogen content (mg/L) | 4.2 | 4.3 | 4.0 | 4.2 |
| Water outlet ammonia-nitrogen content (mg/L) | 0.2 | 0.4 | 1.0 | 0.5 |
| Clearance | 95.2％ | 90.7％ | 75％ | 88.1％ |
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art,The present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement,Improve etc., within all should being included in protection scope of the present invention.
Claims (4)
1. enhanced flocculation-aerobic nitrification the treatment system for low ammonia nitrogen water source, comprise flocculation basin (3), flocculation basin (3) is provided with water inlet and delivery port, it is characterized in that, the bottom surface of described flocculation basin (3) is provided with aeration head (5), and the density of aeration head (5) reduces gradually along water (flow) direction; Described treatment system comprises the sedimentation basin (9) being communicated with flocculation basin (3), and sedimentation basin (9) offers delivery port and mud discharging mouth; Described treatment system also comprises storage basin (12), mud discharge line (15) and sludge return pipe (6), the entrance of storage basin (12) is communicated with the mud discharging mouth of sedimentation basin (9), and outlet is communicated with sludge return pipe (6) and mud discharge line (15) respectively; On described sludge return pipe (6), be provided with sludge reflux pump (13), sludge return pipe (6) is communicated with flocculation basin (3) water inlet.
2. a kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source as claimed in claim 1, is characterized in that, described flocculation basin (3) water inlet is provided with carbon source throwing device (2).
3. a kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source as claimed in claim 1, is characterized in that, described flocculation basin (3) internal vertical is evenly arranged at intervals with multiple grids (4) in the water surface and water (flow) direction.
4. a kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source as claimed in claim 3, is characterized in that, described sedimentation basin (9) inside is furnished with inclined-pipe settler (14).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711009.3A CN104386808B (en) | 2014-11-28 | 2014-11-28 | A kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source |
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| CN201410711009.3A CN104386808B (en) | 2014-11-28 | 2014-11-28 | A kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source |
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| CN104386808A CN104386808A (en) | 2015-03-04 |
| CN104386808B true CN104386808B (en) | 2016-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1058946C (en) * | 1996-05-31 | 2000-11-29 | 王绍文 | Vertical retained aeration sewage treatment process and device |
| CN101234821B (en) * | 2008-02-21 | 2010-04-14 | 上海交通大学 | Method for treating landscape water body eutrophication pollution |
| CN203382597U (en) * | 2013-07-25 | 2014-01-08 | 河南新大新材料股份有限公司 | Industrial wastewater treatment flocculation and sedimentation device |
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Inventor after: Li Meng Inventor after: Li Pirui Inventor after: Ding Jingnan Inventor before: Li Meng Inventor before: Li Pirui |
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