CN103112997B - High-ammonia nitrogen organic sewage purification treatment system and method - Google Patents
High-ammonia nitrogen organic sewage purification treatment system and method Download PDFInfo
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- CN103112997B CN103112997B CN201310050776.XA CN201310050776A CN103112997B CN 103112997 B CN103112997 B CN 103112997B CN 201310050776 A CN201310050776 A CN 201310050776A CN 103112997 B CN103112997 B CN 103112997B
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Abstract
The invention discloses a sewage purification treatment system and method, and provides a sewage purification treatment system and method capable of obviously improving the capacity of removing organic ammonia nitrogen from sewage targeted at the defects of poor nitrogen removal effect, high running cost, insufficient land bearing capacity and the like of a high-ammonia nitrogen organic sewage purification system and method in the prior art. The purification treatment system disclosed by the invention comprises a processing raw water storage tank, a mineral filter tank connected, a water distributing pipe, and a water collecting pipe, wherein the mineral filter tank is filled with a plurality of layers of mineral filter media, the mineral filter media are divided into three layers, which are respectively a coarse sand layer, a zeolite layer and a gravel layer from top to bottom, the thickness of the zeolite layer is equal to that of the gravel layer, the thickness of the coarse sand layer is twice that of the zeolite layer or that of the gravel layer, and a water outlet terminal of the water distributing pipe is an atomizing spraying device. The invention also provides an assorted sewage treatment method. High-ammonia nitrogen organic sewage is purified and treated by using the system and method disclosed by the invention, the quality of treated water meets national discharge standards, and the system is simple in structure, economical in material application, easily controlled in process of the assorted method, and low in energy consumption.
Description
Technical field
The present invention relates to a kind of sewage purification processing system and method, particularly relate to a kind of with multilayer mineral material be filtration medium high ammonia nitrogen organic sewage cleaning treatment system and method, belong to water, waste water or technical field of sewage.
Background technology
High ammonia nitrogen (NH
4-N) organic sewage is one of current China principal pollutant kind, source comprises monosodium glutamate sewage, food-processing sewage, livestock culture sewage, percolate etc., and this kind of ammonia nitrogen in sewage content is more than or equal to 300ml/L usually.First the purifying treatment way of high ammonia nitrogen organic sewage generally adopts marsh gas fermentation process to carry out anaerobic digestion and removes most organic pollutant, reclaim energy biogas simultaneously.Anaerobic digestion solution (processing former water) after anaerobic digestion cannot be completely used as farmland fertilizer condition under, need through further process after qualified discharge.But there is denitrification effect difference in high ammonia nitrogen organic sewage anaerobic digestion solution (processing former water) postpositive disposal process, running cost is high, the problems such as bearing capacity of the ground is not enough, a large amount of anaerobic digestion solution (processing former water) often cannot cause secondary pollution by qualified discharge.
Summary of the invention
Object of the present invention is exactly for the deficiencies in the prior art, provides a kind of sewage purification processing system and the method that significantly improve organic ammonia nitrogen removal ability in sewage.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of high ammonia nitrogen organic sewage cleaning treatment system, comprise the former water storage pool of process, process former water storage pool to be connected with mineral filtering basin by pipeline, multilayer mineral filtration medium is loaded in mineral filtering basin, the water pump processing the connection of former water storage pool water outlet necessary is connected to water distributor again, water distributor opening is on mineral filtering medium layer top, and mineral filtering medium layer lower disposed receives water pipe; It is characterized in that: the mineral filtration medium that described mineral filtering basin are loaded is divided into three layers, and be from top to bottom coarse sands layer, zeolite layer, metalling respectively, described zeolite layer is equal with fractured-rock layer thickness, and gross sand thickness is two times of zeolite layer or fractured-rock layer thickness; Described water distributor outlet terminal is atomizing water spraying device.
Above-mentioned high ammonia nitrogen organic sewage cleaning treatment system adopts common mineral material as filtration medium, and the selection of filtration medium and layout consider 3 know-whies:
One, multilayer mineral filtration medium is divided into three layers from top to bottom, when the former water of process (i.e. anaerobic digestion solution) enters cleaning treatment system of the present invention, from top to bottom successively through each mineral filtering medium layer, be nitrosification district at coarse sands layer, improve dissolved oxygen oxygen concn in filter layer by intensified water-layout uniformity coefficient.Carry out aerobic reaction at system filler layer medium-sand seam, at this aerobic section, due to the oxygenizement of dissolved oxygen, ammonia nitrogen is converted into nitrite nitrogen through nitrosation reaction, and therefore corresponding nitrite nitrogen concentration continues to increase; Be Anammox district in zeolite layer and metalling, nitrite nitrogen is by Anammox effect, and nitrite nitrogen is nitrogen with residue mineralized nitrogen.
Two, a gordian technique of sewage purification system purification efficiency is the level of response and the reaction times that strictly control each stage in purification, and present system is by controlling the remarkable lifting system wastewater purification efficiency of each mineral filtration medium layer thickness.Wherein, zeolite layer may provide ammonia nitrogen and nitrite nitrogen equal to fractured-rock layer thickness has the enough reaction times in Anammox district, the function bacterial classification that enrichment is enough; Gross sand thickness is that zeolite layer or fractured-rock layer thickness two times can control dirty water oxygen level, by the ammonia control in the sewage of flow path coarse sands layer in the nitrosation reaction stage, realize the former water of process enter native system flow through coarse sands layer after mineralized nitrogen rate reach 50%; Under optimization design, gross sand thickness is designed to 600mm, can ensure that mineralized nitrogen rate reaches 50% further.
Three, the specification of filtration medium is designed further, specifically coarse sands layer particle diameter 0.5mm ~ 2.0mm, zeolite layer particle diameter 2.0mm ~ 5.0mm, metalling particle diameter 10.0mm ~ 30.0mm, the ballast grain sizes of metalling increases from top to bottom gradually, and its effect mainly provides biochemical reaction zone and as the coarse sands layer on supporting layer support upper strata and zeolite layer.By to filter media material selection, the design of filtration medium layer thickness and filtration medium specifications control, the former water of the process of the system of entering can be ensured without blocking after each mineral filtering medium layer filters, and complete each stage biochemical reaction smoothly.
The water-distributing device of the water distributor terminal of said system adopts atomizing water spraying device.Atomizing spray is irrigation method conventional in treegarden irrigation; its Main Function is atomized as ultramicron (as 1 μm ~ 5 μm) by high frequency oscillation by water molecules; and by means of aerophor, water smoke is diffused in air; both the contact area of water ultramicron and soil, plant, air had been increased; the settling time moisturized again in middle air; long-time protection of the environment is with the humid air, reaches the object of water saving irrigation thus.In the present system, adopt nothing blocking atomizing water spraying device to be mainly as terminal water-distributing device and realize five technical purposes, one, prevent former water impurity from blocking shower nozzle, two, the contact area of the former water of process and filtering medium layer is evenly increased, three, reduce the filtration velocity of former water particulate in filtering medium layer, extend filtration time, four, increase former water and air contact surfaces long-pending, extend the moisture aerial settling time, thus the former water of increase process exposes to the sun, dissolved oxygen in oxygen time, raising filtering medium layer, avoids in cleaning treatment system and occurs purification dead band; Five, the oxygen device that exposes to the sun special in existing purification system can be omitted.
Based on above-mentioned high ammonia nitrogen organic sewage cleaning treatment system, the present invention also provides a kind of high ammonia nitrogen organic sewage purifying treatment method utilizing this system to realize, and concrete technical scheme is as follows:
A kind of high ammonia nitrogen organic sewage purifying treatment method utilizing above-mentioned sewage purification processing system to realize, high ammonia nitrogen organic sewage enters the former water storage pool of process, through the former water of Anaerobic Digestion formation processing, process former water and enter mineral filtering medium layer surface in mineral filtering basin through water distributor, after mineral filter media, discharge system through receiving water pipe again; It is characterized in that: system adopts alternation of wetting and drying drive manner to dispose of sewage, the former water of dosing process every day 16 times, every 1.5h dosing once, a turbine generating set 1.5h, throw water time 10min, fall dry time 80min.
Aforesaid method, by control treatment former water dosing frequency and time, reduces wet-dry ratio, and increase system reoxygenation ability, Controlling System is in the rational biochemical reaction stage, finally effectively can control distribution uniformity, reach as high as 95%.
The former water desired value of the process that sewage purification system of the present invention and method are suitable for is COD≤1000mg/L, BOD≤200mg/L, in the ammonia nitrogen≤500mg/L of N; Be preferably COD650mg/L ~ 1000mg/L, BOD130mg/L ~ 200mg/L, in the ammonia nitrogen 250mg/L ~ 500mg/L of N.
Compared with prior art, the invention has the beneficial effects as follows: one, this high ammonia nitrogen organic sewage purification system and method can the effective former water of purifying treatment height NH_3-N treating, ammonia nitrogen removal frank 84.5% ~ 90.4% under the former water ammonia-nitrogen content of process is the condition of 250mg/L ~ 350mg/L, COD650mg/L ~ 1000mg/L; COD clearance 89.5% ~ 91.4%, meets qualified discharge national standard; Two, native system and method are also applicable to the former water of the micro-pollution plot of the lower routine of purifying treatment ammonia-nitrogen content, domestic sewage in rural areas or city secondary effluent reprocessing, and after process, water quality meets qualified discharge national standard; Three, cleaning treatment system structure is simple, with material is cheap, investment construction economical, working cost are low, maintenance management is convenient, purifying treatment method technique is easily controlled, energy consumption is little.
Accompanying drawing explanation
Fig. 1 is high ammonia nitrogen organic sewage cleaning treatment system two dimensional structure schematic diagram.
Fig. 2 is the left side partial enlarged drawing of Fig. 1.
Fig. 3 is that Figure 1A-A cuts open and shows structural representation.
Fig. 4 is the left side partial enlarged drawing of Fig. 3.
Numerical markings in accompanying drawing is respectively:
Former water storage pool 2 mineral filtering basin 21 coarse sands layer 22 zeolite layer 23 metalling 3 water distributor 31 cloth water conduit tube 32 water distribution branch pipe 33 atomizing water spraying device 4 of 1 process is received water pipe 41 and is received water conduit tube 42 and receive water arm
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are further described.
Embodiment one
Scientific base, dan Pan Zhen Sichuan Province Animal Husbandry Institute of Science and Technology, Jianyang, Sichuan Province treatment for cow manure engineering sewage, after measured, quantity of wastewater effluent 40m
3/ d, after anaerobic digestion, process former water index and birth index as shown in table 1.
Specifically as shown in Figure 1 and Figure 2, a high ammonia nitrogen organic sewage cleaning treatment system is built.Design hydraulic load is 0.06m/d, and every day, sewage load was 40m
3.In cleaning treatment system, mineral filtering basin net sectional area is designed to 670m
2, adopt brick to mix and build with low pressure polyethylene (HDPE) anti seepage membrane.Mineral filtering basin also can adopt concrete structure.
Fig. 1 is high ammonia nitrogen organic sewage cleaning treatment system two dimensional structure schematic diagram; Fig. 2 is the left side partial enlarged drawing of Fig. 1.High ammonia nitrogen organic sewage cleaning treatment system, comprise the former water storage pool 1 of process, process former water storage pool 1 to be connected with mineral filtering basin 2 by pipeline, multilayer mineral filtration medium is loaded in mineral filtering basin 2, the water pump processing the connection of former water storage pool 1 water outlet necessary is connected to water distributor 3 again, water distributor 3 water outlet opening is on mineral filtering medium layer top, and mineral filtering medium layer lower disposed receives water pipe 4.
Water distributor 3 all adopts array way to arrange with receipts water pipe 4.Water distributor 3 comprises cloth water conduit tube 31 and water distribution branch pipe 32, and process former water storage pool 1 water outlet and connect cloth water conduit tube 31, cloth water conduit tube 31 is arranged in mineral filtering basin 2 upper strata, and parallel with mineral filtering basin 2 bottom surface, cloth water conduit tube 31 is furnished with many, spacing 4000mm.Water distribution branch pipe 32 is branch roads of cloth water conduit tube 31, and from cloth water conduit tube 31, spacing separates, with mineral filtering basin 2 plane perpendicular, and water distribution 32 spacing 4000mm.The water outlet end of water distribution branch pipe 32 is atomizing water spraying devices 33, distance mineral filtering medium layer upper surface 450mm.Atomizing water spraying device 33 adopts without blocking spiral nozzle.Receive water pipe 4 comprise receipts water conduit tube 41 and receive water arm 42, be arranged between metalling 23 in length and breadth, parallel with mineral filtering basin 2 bottom surface, distance mineral filtering basin 2 end 10 ± 3cm; Receive water conduit tube 41 spacing 4000mm, receive water arm 42 spacing 3000mm.Cloth water conduit tube 31 highly differs 1000mm with receipts water pipe 4.
Fig. 3 is that Figure 1A-A cuts open and shows structural representation; Fig. 4 is the left side partial enlarged drawing of Fig. 3.Mineral filtering basin 2 internal space height 1400mm, the mineral filtration medium total height 1200mm of filling.Mineral filtration medium is divided into three layers, is from top to bottom coarse sands layer 21, zeolite layer 22, metalling 23 respectively, and zeolite layer 22 is equal with metalling 23 thickness is 300mm, and coarse sands layer 21 thickness is two times of zeolite layer 22 or metalling 23 thickness is 600mm.Coarse sands layer 21 particle diameter 0.5mm ~ 2.0mm, zeolite layer 22 particle diameter 2.0mm ~ 5.0mm, metalling 23 particle diameter 10mm ~ 30mm, ballast grain sizes increases from top to bottom gradually.
Adopt the sewage/natural pond liquid purifying treatment method of this system implementation, specifically: high ammonia nitrogen organic sewage enters the former water storage pool 1 of process through the former water of Anaerobic Digestion formation processing, process former water and enter mineral filtering medium layer surface in mineral filtering basin 2 through water distributor 3, after mineral filter media, discharge system through receiving water pipe 4 again.Water distribution branch pipe 32 end atomization distribution uniformity >=90%.System adopts alternation of wetting and drying drive manner to dispose of sewage, the former water of dosing process every day 16 times, and every 1.5h dosing once, a turbine generating set 1.5h, throw water time 10min, fall dry time 80min.
Wastewater treatment effluent quality is as shown in following table table 1.
Table 1 different sewage process raw water quality and effluent quality data
Conventional ammonia-nitrogen sewage through this system purification process reaches " integrated wastewater discharge standard " primary standard, and the high-ammonia-nitrogen sewage through this system purification process reaches " livestock and poultry breeding industry pollutant emission standard ", all meets relative national standards.During high ammonia nitrogen organic sewage cleaning treatment system winter operation, ammonia nitrogen loading is 9.87g/m
2d, during summer operation, ammonia nitrogen loading is 31.60g/m
2d, when spring, autumn are run, ammonia nitrogen loading is 20.73g/m
2d.
Claims (8)
1. a high ammonia nitrogen organic sewage purifying treatment method, utilizes high ammonia nitrogen organic sewage cleaning treatment system to realize;
Described high ammonia nitrogen organic sewage cleaning treatment system, comprise the former water storage pool (1) of process, process former water storage pool (1) to be connected with mineral filtering basin (2) by pipeline, multilayer mineral filtration medium is loaded in mineral filtering basin (2), the water pump processing the connection of former water storage pool (1) water outlet necessary is connected to water distributor (3) again, water distributor (3) opening is on mineral filtering medium layer top, and mineral filtering medium layer lower disposed receives water pipe (4); The mineral filtration medium that described mineral filtering basin (2) are loaded is divided into three layers, from top to bottom coarse sands layer (21), zeolite layer (22), metalling (23) respectively, described zeolite layer (22) is equal with metalling (23) thickness, and coarse sands layer (21) thickness is two times of zeolite layer (22) or metalling (23) thickness; Described water distributor (3) terminal water-distributing device is atomizing water spraying device (33);
High ammonia nitrogen organic sewage enters the former water storage pool (1) of process through the former water of Anaerobic Digestion formation processing, process former water and enter mineral filtering medium layer surface in mineral filtering basin (2) through water distributor (3), after mineral filter media, discharge system through receiving water pipe (4) again; Described water distributor (3) comprises cloth water conduit tube (31) and water distribution branch pipe (32), and water distribution branch pipe (32) end is atomizing water spraying device (33);
It is characterized in that: described water distribution branch pipe (32) end atomization distribution uniformity >=90%; System adopts alternation of wetting and drying drive manner to dispose of sewage, the former water of dosing process every day 16 times, and every 1.5h dosing once, a turbine generating set 1.5h, throw water time 10min, fall dry time 80min.
2. method according to claim 1, is characterized in that: be suitable for the former water desired value of process be COD≤1000mg/L, BOD≤200mg/L, in the ammonia nitrogen≤500mg/L of N.
3. method according to claim 1, is characterized in that: be suitable for the former water desired value of process be COD650mg/L ~ 1000mg/L, BOD130mg/L ~ 200mg/L, in the ammonia nitrogen 250mg/L ~ 500mg/L of N.
4. method according to claim 1, is characterized in that: during system cloud gray model winter ammonia nitrogen loading 9.87g/m
2d, summer ammonia nitrogen loading 31.60g/m
2d, spring, autumn ammonia nitrogen loading 20.73g/m
2d.
5. according to the arbitrary described method of Claims 1 to 4, it is characterized in that: described coarse sands layer (21) particle diameter 0.5mm ~ 2.0mm, zeolite layer (22) particle diameter 2.0mm ~ 5.0mm, metalling (23) particle diameter 10.0mm ~ 30.0mm, ballast grain sizes increases from top to bottom gradually.
6., according to the arbitrary described method of Claims 1 to 4, it is characterized in that: described mineral filtration medium thickness 1200mm, its medium-sand seam (21) thick 600mm, zeolite layer (22) thick 300mm, metalling (23) thick 300mm.
7. according to the arbitrary described method of Claims 1 to 4, it is characterized in that: described process former water storage pool (1) water outlet connects cloth water conduit tube (31), cloth water conduit tube (31) is parallel with mineral filtering basin (2) bottom surface, described water distribution branch pipe (32) is the branch road of cloth water conduit tube (31), with mineral filtering basin (2) plane perpendicular; Described receipts water pipe (4) is arranged in mineral filtering basin (2) lower floor in length and breadth.
8., according to the arbitrary described method of Claims 1 to 4, it is characterized in that: described mineral filtering basin (2) internal space height 1400mm, cloth water conduit tube (31) highly differs 1000mm with receipts water pipe (4).
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| CN102336500A (en) * | 2011-07-28 | 2012-02-01 | 农业部规划设计研究院 | Rural domestic sewage treatment system suitable for northern part of China and technology thereof |
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| JP3295147B2 (en) * | 1992-10-09 | 2002-06-24 | 東洋電化工業株式会社 | Water treatment method |
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Patent Citations (7)
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|---|---|---|---|---|
| CN1676469A (en) * | 2004-09-17 | 2005-10-05 | 钟佐燊 | Artificial rapid diafiltration sewage treating system |
| CN1772650A (en) * | 2005-10-09 | 2006-05-17 | 徐祖信 | Matrix composition recipe for sewage treating artificial wet land |
| CN101164922A (en) * | 2007-09-29 | 2008-04-23 | 上海达人环保科技有限公司 | Oil-containing sewage treatment system |
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| CN101397178A (en) * | 2008-08-14 | 2009-04-01 | 中国地质大学（武汉） | Livestock and poultry raising sewage disposal process and disposal system thereof |
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