CN101885563A - SBR+ artificial wetland combined treatment system for domestic sewage recycling - Google Patents
SBR+ artificial wetland combined treatment system for domestic sewage recycling Download PDFInfo
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- CN101885563A CN101885563A CN 201010222718 CN201010222718A CN101885563A CN 101885563 A CN101885563 A CN 101885563A CN 201010222718 CN201010222718 CN 201010222718 CN 201010222718 A CN201010222718 A CN 201010222718A CN 101885563 A CN101885563 A CN 101885563A
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Abstract
The invention provides an SBR+ artificial wetland combined treatment system for domestic sewage recycling. The system consists of an SBR treatment device and an artificial wetland treatment device; the SBR treatment device comprises an SBR tank, a water inlet system, an aeration system, a drainage system, a sludge discharge system and automatic control equipment; and the artificial wetland treatment device consists of a three-level side wetland bed, a natural reoxygenation tank and a stabilization pond. The SBR and artificial wetland combining technology has the advantages of two water treatment techniques. The SBR has the advantages of strong impact load resistance, high automatic control degree and simple operation; and the artificial wetland has the advantages of low operation cost, simple maintenance, ecological effect, greening function, and capacities of beautifying the environment and combining the residential landscape. Meanwhile, the SBR and artificial wetland combining technology can overcome respective defects of the two techniques, shorten the aeration time of the SBR system, and reduce the energy consumption thereof. The artificial wetland can make up the nitrogen and phosphorus removal effect in the SBR; and the SBR system can solve the problem that the artificial wetland system has poor treatment effect in winter, effectively prevents the blockage of the artificial wetland, and reduces the occupied area of the artificial wetland.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to " SBR+ artificial swamp " combination process and handle community life sewage, reach " landscape water standard " (GB/T18921-2002) reusing sewage scape generic request when handling under the water quality requirement normal temperature of back (T 〉=15 ℃), low temperature is issued to " the city miscellaneous water water quality standard " generic request of flushing the toilet in (GB/T18920-2002).
Background technology
When shortage of water resources when becoming the serious problems that the whole world faces, sewage carries out the circulation of reuse and water through suitable processing, has become global common recognition.Community wastewater is handled with reuse and is provided new " water source " for the water resources shortage area, to plentiful area, water source, can prevent and remedy pollution, and alleviates the pressure of pipe network and sewage disposal.In newly-built sub-district, set up the scattering sewage treatment device and be not only an important means that solves the sanitary sewage disposal problem as early as possible, also help the reuse on the spot for the treatment of water.
According to the requirement of Eleventh Five-Year Plan, the wastewater treatment rate of establishing the city, city to China in 2010 will reach 70%, and year about 280 billion cubic meters of sewage disposal if there is 1/3rd reuse water to be able to reuse, just are equivalent to the total water diversion volume of south water to north center line.Point out in " Chinese water-saving technology policy outline ": urban sewage reutilization, should be according to municipal effluent source and scale, as far as possible according to on-the-spot disposal on the spot the principle of reuse rationally adopt corresponding reused water processing technology; Urban construction residential quarter, water-deficient area reaches certain construction scope, resident population or water consumption, answers active adoption residential quarter reclaimed wastewater reuse technology, and reuse water is used to flush the toilet, carwash, greening etc.
A lot of sophisticated experiences have been arranged both at home and abroad.In Tianjin, only annual tap water of saving of reusing sewage carwash is above 5,000,000 tons.Annual 2.7 billion cubic meters of purifying waste water that utilize of California, USA are equivalent to the water consumption in 1 year of 1,000,000 populations.According to domestic expert's statistics, when adopting community wastewater to be the reuse water source, population greater than 10,000 or the reusing sewage water consumption reach 750m
3/ d is above to be economical; Set up the reusing sewage reclaiming system in the municipal sewage plant, mainly be between a newly-built water purification, its investment is 30% of newly-built water purification plant investment, the empirical evidence of developed country, and setting up the reusing sewage system in the municipal sewage plant is the most feasible, effective mutual beneficial engineering.
But, at present because technology and scale problem make that the cost of reusing sewage is higher, the cost of the reusing sewage engineering that some scales are less than normal even surpassed the price of tap water.Tap water is the direct substitute of reusing sewage, causes the reusing sewage competitive edge to weaken greatly.Therefore by the improvement technology, reduce the sewage reuse cost, will play very big pushing effect sewage reuse.
Summary of the invention
The present invention is directed to when considering sewage reuse, the sewage method of focusing on has its limitation, and the notion of " on-the-spot disposal is reuse on the spot; realize water balance and water cycle ", proposition is handled community life sewage with SBR+ artificial swamp combination process, realize collecting on the spot, handling and reclaim again and use, not only can control the pollution of water body, the all right laggard row of on-the-spot disposal reuse targetedly, saved water resources, simultaneously, can also obtain good economic benefits, meet the requirement of contemporary Sustainable development.
The present invention proposes a kind of SBR+ artificial swamp composite processing system at sewage reuse, and its technical scheme is as follows:
It is made up of SBR treatment unit that is linked in sequence and artificial swamp treatment unit, carries out pre-treatment by the SBR treatment unit, and artificial swamp carries out precision processing.
Described SBR treatment unit is to adopt sequencing batch active sludge (Sequencing Batch Reactor), has another name called intermittent aeration, and its main body structures are sbr reactor ponds.Sewage is finished operations such as reaction, precipitation, draining and eliminating excess sludge in this reaction tank, treating processes is greatly simplified.The SBR system is made up of SBR pond, water inlet system, aerating system, water exhaust system, sludge drainage system and robot etc.Described water inlet system comprises water inlet pipe, is inserted in the body of pond by the top in SBR pond; Described aerating system is to adopt blast main to be arranged in the SBR pond, keeps a determining deviation at the bottom of dependence support and the pond; Described water exhaust system comprises rising pipe, with the water outlet access artificial swamp treatment unit in SBR pond; Described sludge drainage system comprises shore pipe, is picked out by bottom, SBR pond, and excess sludge is discharged outside the SBR pond; Described robot comprises electric gate valve and gate valve, and the water inlet of SBR treatment unit is controlled automatically by electric gate valve, and spoil disposal and water outlet are controlled respectively by gate valve.
" the natural purification system " that described artificial swamp (Constructed wetlands) treatment unit is artificial simulating nature wet land system and the artificial-strengthening built.It utilizes physics, chemistry and biological triple synergies in the system, realizes efficient purification to sewage by filtration, absorption, coprecipitated, ion-exchange, plant absorbing and microbiological degradation.Artificial swamp is wetland bed by three grades of side direction, natural reaeration groove and stabilization pond are formed.Water from the SBR pond is wetland bed through three grades of side direction that the cloth tank enters artificial swamp, be provided with parallel staggered training wall in described three grades of side direction are wetland bed, separated by spaces in wetland bed is become the current gallery of S shape, in three grades of side direction are wetland bed, be filled with filler, each wetland bed level of described three grades of side direction is provided with a natural reaeration groove afterwards, and three grades of wetland bed water outlets of side direction connect stabilization ponds.
Under the normal temperature, SBR mainly removes COD and ammonia nitrogen in the composite processing system, and artificial swamp is mainly removed total nitrogen, total phosphorus, and wherein artificial swamp is particularly evident to the removal effect of total phosphorus; Under the low temperature, SBR plays main effect to the degraded of COD and ammonia nitrogen in the composite processing system.Artificial swamp is under low temperature condition, and is lower to the degraded contribution rate of COD and ammonia nitrogen.
Advantage of the present invention is as follows:
With SBR and artificial swamp combination, have the advantage of two kinds of water technologies concurrently.
1. the SBR anti-shock loading is strong, and automatic control degree height is simple to operate;
2. artificial swamp running cost is low, has ecologic effect, can beautify the environment;
3. artificial swamp has the greening effect, can combine with the greening of sub-district, offsets the negative influence of land used.
Simultaneously, can remedy two kinds of technology deficiency separately.
1. artificial swamp can remedy nitrogen phosphorus removal effect among the SBR;
2. preposition SBR can prevent effectively that artificial swamp from stopping up;
3. the pre-treatment of preposition SBR can reduce the floor space of artificial swamp.
Therefore, characteristics and requirement in conjunction with the community life sewage treatment project, adopt this SBR+ artificial swamp composite processing system to handle community life sewage and have very high unity technically, this is that this combination process of utilization is handled prerequisite and the basis that community life sewage carries out this test.
Description of drawings
Fig. 1 is a SBR System planes synoptic diagram;
Fig. 2 is the A-A of a SBR system sectional view;
Fig. 3 is the B-B of a SBR system sectional view;
Fig. 4 is the C-C of a SBR system sectional view;
Fig. 5 is the artificial swamp floor map;
Fig. 6 is the artificial swamp diagrammatic cross-section.
Among the figure: 1-water inlet pipe 2-rising pipe
3-shore pipe 4-blast main
5-electric gate valve 6-gate valve
7-90 ° of elbow 8-sleeve pipe
9-support 10-cloth tank
11-natural reaeration groove 12-filler (particle diameter 20-15mm)
13-filler (particle diameter 15-8mm) 14-filler (particle diameter 8-5mm)
15-training wall 16-wetland water inlet pipe
Embodiment
Further specify structure of the present invention and mode of operation below in conjunction with accompanying drawing:
This SBR+ artificial swamp composite processing system is made up of SBR treatment unit and artificial swamp treatment unit;
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, described SBR treatment unit includes SBR pond, water inlet system, aerating system, water exhaust system, sludge drainage system and robot.Sewage enters the SBR pond through water inlet pipe 1, blast main 4 is laid in the pond by elbow 7, and rely on support 9 to keep a determining deviation with at the bottom of the pond, be convenient to the normal operation of aerating system, the water outlet of SBR pond enters artificial wet land treating system through rising pipe 2, and excess sludge is discharged through shore pipe 3, and the water inlet of system is by electric gate valve 5 control water inlet automatically, spoil disposal and water outlet are controlled respectively by gate valve 6, and each inlet and outlet piping passes the pond body sleeve pipe 8 all is set.
Described artificial swamp is wetland bed by three grades of side direction, natural reaeration groove and stabilization pond are formed, referring to Fig. 5 and Fig. 6.Advancing wetland water inlet pipe 16 from the water in SBR pond, to enter three grades of side direction through cloth tank 10 wetland bed, be provided with parallel staggered training wall 15 in three grades of side direction are wetland bed, separated by spaces in wetland bed being become the current gallery of S shape, avoid the slough as far as possible, is 1% along gallery water (flow) direction base slope.In three grades of side direction are wetland bed, load the filler (12,13 and 14) of different-grain diameter respectively, the particle diameter that arrives the back filler more is more little, after every grade, be provided with natural reaeration groove 11, can utilize airborne oxygen to contact the solubility that improves dissolved oxygen in the gallery water outlet with pellicular water in the reoxygenation groove.Make that wetland bed body inside occurs that successive is aerobic, anoxic and anaerobic state, nitrification and denitrification can be carried out in wet land system simultaneously.Three grades of wetland bed water outlets of side direction then insert stabilization pond (stabilization pond is the pond body of a routine, and is not shown).
Sanitary sewage enters the SBR pond, and the cycle of operation in SBR pond is determined according to the maximum removal effect of artificial swamp.Spring and summer temperature height, the removal effect of artificial swamp is higher, and the biological activity of SBR improves, and removal effect is also corresponding better, and aeration time that can corresponding shortening SBR pond reduces its energy consumption.When autumn and winter temperature hanged down, the artificial swamp removal effect descended, and the SBR biological activity reduces, and the aeration time of needs raising SBR and aeration rate are to satisfy the effluent quality requirement.In combination process, the SBR pond is equivalent to the pretreatment pool of artificial swamp, and it can remove most suspended substance, organism, ammonia nitrogen and part total nitrogen, total phosphorus, and the processing that alleviates follow-up artificial swamp is loaded.The supernatant liquor in SBR pond enters artificial swamp by fresh water pump.Artificial swamp is the core of this combination process, handles effect analysis by the maximum of artificial swamp, oppositely the cycle of operation of SBR is adjusted.Artificial swamp is mainly removed total nitrogen, total phosphorus and rest parts organism and suspended substance.
Under the normal temperature, SBR restriction aeration 3h, precipitation 1h, Inlet and outlet water 2h moved for 3 cycles every day, artificial swamp HRT=24h, hydraulic load is 15-17cm/d, and water outlet is satisfied " landscape water standard " (GB/T18921-2002) reusing sewage scape generic request, and combination process under the prerequisite that satisfies the water outlet requirement, sbr reactor device energy consumption is minimum, and the treatment efficiency performance of artificial swamp is maximum.
At low temperatures, SBR restriction aeration 8h, precipitation 1h, Inlet and outlet water 2h moved for 2 cycles every day, artificial swamp HRT=36h, hydraulic load is 8-12cm/d, and water outlet COD and ammonia nitrogen value satisfy " the city miscellaneous water water quality standard " generic request of flushing the toilet in (GB/T18920-2002).
Under the normal temperature, the dissolved oxygen concentration in the sbr reactor device is controlled at 0.5-1.0mg/L, aeration intensity is controlled at 1.0m
3/ h～2.0m
3/ h is comparatively suitable.
Above-mentioned sewage reuse technical work flow process based on " SBR+ artificial swamp " combination process is as follows:
Sanitary sewage enters preliminary sedimentation tank by the pipeline that catchments, and precipitation is removed part suspended substance and organism, to improve the operational conditions of subsequent biological treatment structures, plays the effect of regulating pondage, stabilizing water quality.
The preliminary sedimentation tank water outlet enters the SBR pond by water pump.The cycle of operation in SBR pond is determined according to the maximum removal effect of artificial swamp.Spring and summer temperature height, the removal effect of artificial swamp is higher, and the biological activity of SBR improves, and removal effect is also corresponding better, and aeration time that can corresponding shortening SBR pond reduces its energy consumption.When autumn and winter temperature hanged down, the artificial swamp removal effect descended, and the SBR biological activity reduces, and the aeration time of needs raising SBR and aeration rate are to satisfy the effluent quality requirement.In combination process, the SBR pond is equivalent to the pretreatment pool of artificial swamp, and it can remove most suspended substance, organism, ammonia nitrogen and part total nitrogen, total phosphorus, and the processing that alleviates follow-up artificial swamp is loaded.
The supernatant liquor in SBR pond enters artificial swamp by fresh water pump.Artificial swamp is the core of this combination process, mainly removes total nitrogen, total phosphorus and rest parts organism and suspended substance.Give full play to the maximum treatment effect of artificial swamp, oppositely the cycle of operation of SBR is adjusted, to reach the purpose that cuts down the consumption of energy.
Claims (2)
1. SBR+ artificial swamp composite processing system at sewage reuse, it is characterized in that: it is made up of SBR treatment unit that is linked in sequence and artificial swamp treatment unit, carries out pre-treatment by the SBR treatment unit, and artificial swamp carries out precision processing;
Described SBR treatment unit includes SBR pond, water inlet system, aerating system, water exhaust system, sludge drainage system and robot; Described water inlet system comprises water inlet pipe (1), and its top by the SBR pond is inserted in the body of pond; Described aerating system is to adopt blast main (4) to be arranged in the SBR pond, relies on support (9) to keep a determining deviation with at the bottom of the pond; Described water exhaust system comprises rising pipe (2), and its water outlet with the SBR pond inserts the artificial swamp treatment unit; Described sludge drainage system comprises shore pipe (3), and it is picked out by bottom, SBR pond, and excess sludge is discharged outside the SBR pond; Described robot comprises electric gate valve (5) and gate valve (6), and the water inlet of SBR treatment unit is by electric gate valve (5) control automatically, and spoil disposal and water outlet are controlled respectively by gate valve (6);
Described artificial swamp is wetland bed by three grades of side direction, natural reaeration groove and stabilization pond are formed; Water from the SBR pond is wetland bed through three grades of side direction that cloth tank (10) enters artificial swamp, be provided with parallel staggered training wall (15) in described three grades of side direction are wetland bed, separated by spaces in wetland bed is become the current gallery of S shape, in three grades of side direction are wetland bed, be filled with filler, each wetland bed level of described three grades of side direction is provided with a natural reaeration groove (11) afterwards, and three grades of wetland bed water outlets of side direction connect stabilization ponds;
Described system at normal temperatures, SBR treatment unit restriction aeration 3h, precipitation 1h, Inlet and outlet water 2h moved for 3 cycles every day, dissolved oxygen concentration is controlled at 0.5-1.0mg/L, aeration intensity is controlled at 1.0m
3/ h～2.0m
3/ h; Artificial swamp treatment unit HRT=24h, hydraulic load are 15-17cm/d;
Described system at low temperatures, SBR treatment unit restriction aeration 8h, precipitation 1h, Inlet and outlet water 2h moved for 2 cycles every day, artificial swamp HRT=36h, hydraulic load are 8-12cm/d.
2. the SBR+ artificial swamp composite processing system at sewage reuse according to claim 1, it is characterized in that: described system water outlet T 〉=15 at normal temperatures ℃ reaches " landscape water standard " (GB/T18921-2002) reusing sewage scape generic request, and low temperature is issued to " the city miscellaneous water water quality standard " generic request of flushing the toilet in (GB/T18920-2002).
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| CN 201010222718 CN101885563A (en) | 2010-04-29 | 2010-06-29 | SBR+ artificial wetland combined treatment system for domestic sewage recycling |
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| CN201010158906 | 2010-04-29 | ||
| CN201010158906.8 | 2010-04-29 | ||
| CN 201010222718 CN101885563A (en) | 2010-04-29 | 2010-06-29 | SBR+ artificial wetland combined treatment system for domestic sewage recycling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043865A (en) * | 2013-01-08 | 2013-04-17 | 重庆大学 | Reclaimed water treatment system combining upflow aerating biological filter with horizontal underflow artificial wetland |
| CN105152475A (en) * | 2015-09-06 | 2015-12-16 | 总装备部工程设计研究总院 | South residential area sewage disposal system and method |
| CN105668779A (en) * | 2016-04-06 | 2016-06-15 | 厦门百仕洁环保科技有限公司 | Circular-oxygenation biochemical device |
| CN106167339A (en) * | 2016-08-23 | 2016-11-30 | 北京化工大学 | Ecological carbon fiber SBBR and artificial wetland combination processing system and processing method for Treated sewage reusing |
| CN109052842A (en) * | 2018-08-31 | 2018-12-21 | 江苏康源环保科技有限公司 | A kind of novel domestic sewage of villages and small towns treatment process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043865A (en) * | 2013-01-08 | 2013-04-17 | 重庆大学 | Reclaimed water treatment system combining upflow aerating biological filter with horizontal underflow artificial wetland |
| CN105152475A (en) * | 2015-09-06 | 2015-12-16 | 总装备部工程设计研究总院 | South residential area sewage disposal system and method |
| CN105668779A (en) * | 2016-04-06 | 2016-06-15 | 厦门百仕洁环保科技有限公司 | Circular-oxygenation biochemical device |
| CN105668779B (en) * | 2016-04-06 | 2019-05-21 | 厦门百仕洁环保科技有限公司 | A kind of circulating oxygenation biochemical device |
| CN106167339A (en) * | 2016-08-23 | 2016-11-30 | 北京化工大学 | Ecological carbon fiber SBBR and artificial wetland combination processing system and processing method for Treated sewage reusing |
| CN106167339B (en) * | 2016-08-23 | 2019-03-29 | 北京化工大学 | For the ecological carbon fiber SBBR and artificial wetland combination processing system and processing method of Treated sewage reusing |
| CN109052842A (en) * | 2018-08-31 | 2018-12-21 | 江苏康源环保科技有限公司 | A kind of novel domestic sewage of villages and small towns treatment process |
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Open date: 20101117 |