CN102153253B - Side flow aeration biofilter-side flow artificial wetland combined reclaimed water treatment system - Google Patents
Side flow aeration biofilter-side flow artificial wetland combined reclaimed water treatment system Download PDFInfo
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- CN102153253B CN102153253B CN2011101319913A CN201110131991A CN102153253B CN 102153253 B CN102153253 B CN 102153253B CN 2011101319913 A CN2011101319913 A CN 2011101319913A CN 201110131991 A CN201110131991 A CN 201110131991A CN 102153253 B CN102153253 B CN 102153253B
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Abstract
The invention discloses a side flow aeration biofilter-side flow artificial wetland combination system used for treating and reusing the domestic sewage of the green building. The system consists of two parts, namely a side flow aeration biofilter and a side flow artificial wetland, wherein the side flow aeration biofilter mainly comprises an adjusting tank, an A-section filler zone, a transition zone, a B-section filler zone and an effluent zone; and the inside space of the side flow artificial wetland is divided to S-shaped gullies by parallel baffles which are arranged in a staggered manner. The combination technology has the following advantages of both the two water treatment technologies: the side flow aeration biofilter has high shock resistance and high and stable treatment efficiency; and the side flow artificial wetland has low operation cost and good water outlet effect, also has ecological effect and can be used to beautify the environment of the green building. Meanwhile, the combination technology can compensate the following weaknesses of each technology: by adopting the side flow artificial wetland, the weakness of the aeration biofilter that the removals of nitrogen and phosphorus are not complete; and by adopting the aeration biofilter, the problems of the artificial wetland that the artificial wetland is easy to block and the treatment effect is not stable in winter, can be solved.
Description
Technical field
The invention belongs to WWT, environment protection and green building technique field; Be specifically related to " lateral flow biological aerated filter-lateral flow artificial swamp " combination process and handle the green building sewage, handle the requirement that back water quality reaches " urban sewage reutilization city miscellaneous water water quality " (GB/T18920-2002) and " urban sewage reutilization water for scenic environment use water quality " (GB/T18921-2002) simultaneously.
Background technology
When shortage of water resources became the serious problems that the whole world faces, sewage reuse had after treatment become global common recognition.Green building sanitary sewage disposal and reuse provide new " water source " for the water resources shortage area, to plentiful area, water source, can prevent and remedy pollution, and alleviate the pressure of pipe network and follow-up WWT.In green building, build the scattering sewage treatment reclamation set and not only can solve the sanitary sewage disposal problem, also help reuse water reuse on the spot.
According to the requirement of Eleventh Five-Year Plan, will reach 70% to the wastewater treatment rate in China city in 2010, year about 280 billion cubic meters of WWT 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; Water-deficient area urban construction residential quarter reaches certain construction scope, resident population or water consumption, answers active adoption residential quarter reclaimed wastewater reuse technology." green building assessment standard " (GB/T 50378-2006) " control item " requires the residential housing water-saving rate to be not less than 8%; " general term " requires the non-traditional water utilization rate of residential housing to be not less than 10%, and office building, market class are built non-traditional water utilization rate and be not less than 20%, and the hotel class is not less than 15%; " preference " requires the non-traditional water utilization rate of residential housing to be not less than 30%, and office building, market class are built non-traditional water utilization rate and be not less than 40%, and the hotel class is not less than 25%.The green building life sewage treatment and reuse is the major technique measure that improves water-saving rate and non-traditional water utilization rate.
For the green building life sewage treatment and reuse, more sophisticated experience has been arranged both at home and abroad at present.In Tianjin, only annual tap water of practicing thrift 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 yield reach 750m
3/ d is above to be economical; Set up the reusing sewage 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 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 through improving technology, reduce the sewage reuse cost, improve the operability of life sewage treatment and reuse, stable quality of reused water will play very big pushing effect to sewage reuse.
Summary of the invention
The present invention is directed to the green building life sewage treatment and reuse, sewage focuses on the limitation of method, and the notion of " on-the-spot disposal is reuse on the spot; realize water balance and water cycle ", proposes to handle the green building sewage with lateral flow biological aerated filter-lateral flow artificial swamp combination process, realizes collecting on the spot, handling and utilize; Both may command water pollutions also can be carried out reuse targetedly, conserve water resource; Realize simplifying processing technological flow, operational management is convenient, reduces investment and running cost; Reduce and take up an area of, improve the purpose of treatment efficiency and quality of reused water, meet the requirement of sustainable development idea.
The present invention proposes a kind of lateral flow biological aerated filter-lateral flow artificial swamp combined system to the green building life sewage treatment and reuse, and its technical scheme is following:
It is made up of lateral flow biological aerated filter and lateral flow artificial swamp.
Said lateral flow biological aerated filter (Lateral Biological Aerated Filter) treatment unit is connected to form by equalizing tank, A section packing area, zone of transition, B section packing area and exhalant region successively; Staggered filling particle diameter is the zeolite of 10-15mm in the A section condiment district, staggered arrangement filler frame in the body of pond, and the water stream channel of formation S type, B section packing area filling particle diameter is the zeolite of 3-6mm, purpose is in order to increase biomass concentration, to improve effluent characteristics; Packing layer structure from bottom to top: blotter, back flushing water inlet pipe, aeration tube, back flushing inlet pipe, zeolite filler.
In said lateral flow artificial swamp (the Lateral Constructed Wetlands) treatment unit parallel staggered division plate is set; Spatial in the wetland is divided into the current raceway groove of S shape; The cobble of filling 20-80mm grating in raceway groove, depth of packing 0.5-0.9m, and plantation waterplant.
The operating mode matching relationship of this combined system is following:
System at normal temperatures, lateral flow biological aerated filter treatment unit HRT=9h, hydraulic load are 0.75m/h, GWR is 3:1; Lateral flow artificial swamp treatment unit HRT=24h, hydraulic load is 0.5m
3/ m
2D;
System is (5-15 ℃) when operation in the winter time, and lateral flow biological aerated filter treatment unit HRT=12h, hydraulic load are 0.6m/h, and GWR is 4:1; Lateral flow artificial swamp treatment unit HRT=36h, hydraulic load is 0.33m
3/ m
2D.
In this composite processing system; Lateral flow biological aerated filter mainly carries out pre-treatment; The lateral flow artificial swamp mainly carries out advanced treatment, and the requirement of " urban sewage reutilization city miscellaneous water water quality " (GB/T18920-2002) and " urban sewage reutilization water for scenic environment use water quality " (GB/T18921-2002) is satisfied in water outlet simultaneously.
Lateral flow biological aerated filter is mainly removed suspended substance, organism and the ammonia nitrogen in the sewage, and realizes nitrated; The lateral flow artificial swamp is mainly removed total phosphorus and remaining suspended substance, and realizes the biological denitrification denitrogenation; Wherein the lateral flow artificial swamp is particularly evident to the removal effect of total phosphorus.Under the low temperature, lateral flow biological aerated filter plays main effect to the degraded of organism and ammonia nitrogen in the composite processing system; The lateral flow artificial swamp is under low temperature condition, and is lower to the degraded contribution rate of organism and ammonia nitrogen.Both cooperation promote the treatment efficiency and the water outlet effect of this system generally, realize the water quality and quantity combined optimization regulation and control of lateral flow biological aerated filter-lateral flow artificial swamp.
Major advantage of the present invention is following:
With lateral flow biological aerated filter and the combination of lateral flow artificial swamp, have the advantage of two kinds of water technologies concurrently.
1. the lateral flow biological aerated filter anti-shock loading is strong, and treatment efficiency is high, and treatment effect is good and stable;
2. it is effective that the lateral flow artificial swamp is handled the BAF water outlet, and running cost is low;
3. the lateral flow artificial swamp has ecologic effect, can beautify the environment, and combines with the greening view of green building simultaneously, offsets the negative influence of land used.
Simultaneously, can remedy two kinds of technology deficiency separately.
1. the lateral flow artificial swamp can remedy the BAF not good drawback of nitrogen phosphorus removal effect of disposing of sewage;
2. preposition lateral flow biological aerated filter can prevent effectively that because of removing suspended substance effect height follow-up lateral flow artificial swamp from stopping up;
3. the processing of preposition lateral flow biological aerated filter can reduce the floor space of lateral flow artificial swamp significantly.
Improve the requirement of water-saving rate and non-traditional water utilization rate to green building; This combination process has made full use of advantage separately, and remedies mutual deficiency, can realize ensureing effluent quality simultaneously; Operational management is simple and convenient, reduces the characteristics of construction investment and running cost.
Description of drawings
Fig. 1 is the lateral flow biological aerated filter floor map;
Fig. 2 is a lateral flow biological aerated filter A-A sectional view;
Fig. 3 is a lateral flow biological aerated filter B-B sectional view;
Fig. 4 is a lateral flow biological aerated filter C-C sectional view;
Fig. 5 is a lateral flow artificial swamp floor map;
Fig. 6 is a lateral flow artificial swamp diagrammatic cross-section.
Among the figure: 5-zone of transition, 6-B section packing area, 1-water inlet pipe, 2-equalizing tank, 3-perforation plate, 4-A section packing area (particle diameter 10-15mm zeolite) (particle diameter 3-6mm zeolite), 7-exhalant region, 8-rising pipe, 9-aeration tube, 10-back flushing water inlet pipe, 11-back flushing water inlet pipe, 12-back flushing effluent trough, 13-back flushing rising pipe, 14-lateral subsurface flow wetland bed, 15-division plate, 16-water stream channel.
Embodiment
Further specify structure of the present invention and mode of operation below in conjunction with accompanying drawing:
Lateral flow biological aerated filter-lateral flow artificial swamp combined system to the green building life sewage treatment and reuse is made up of lateral flow biological aerated filter and lateral flow artificial swamp.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, lateral flow biological aerated filter mainly comprises equalizing tank 2, A section packing area 4, zone of transition 5, B section packing area 6 and exhalant region 7.Sewage gets into equalizing tank 2 through water inlet pipe 1, after perforation plate 3 gets into A section packing area 4, it is the zeolite of 10-15mm that the filler frame in the A section packing area 4 is loaded particle diameter; Staggered arrangement forms S type water stream channel between the filler frame, so most of sewage passes filler; Small portion sewage can be walked around the filler frame, through the space between filler frame and pool wall, converges next filler frame of entering with the sewage that passes the filler frame; The back gets into zone of transition 5, after zone of transition, gets into B section packing area 6, fills out the zeolite that particle diameter is 3-6mm; At last by exhalant region 7 water outlets, through rising pipe 8 approaching sides to person who lives in exile worker's wetland.Aerating system mainly is made up of aerating pipelines 9.Back-purge system is made up of back flushing water inlet pipe 10, back flushing inlet pipe 11, back flushing effluent trough 12 and back flushing rising pipe 13.
Lateral flow artificial swamp treatment unit such as Fig. 5 are with shown in Figure 6: parallel staggered division plate 15 is set in the lateral subsurface flow wetland bed 14 of lateral flow artificial swamp; Spatial in the wetland is divided into the current raceway groove 16 of S shape; The cobble (depth of packing 0.5-0.9m) of filling 20-80mm grating in raceway groove; And the plantation waterplant, can eliminate the slough in the lateral flow artificial swamp, improve utilization rate of tank volume.Under the effect of waterplant oxygen supply, whole lateral flow artificial swamp is in the oxygen of the holding concurrently oxygen condition of becoming reconciled, and can effectively improve the microbial biomass in filling surface and root district, improves biological action efficient greatly, raising biological denitrificaion usefulness.
Spring and summer temperature is high, and the removal effect of lateral flow artificial swamp is higher, and the biological activity of BAF improves, and removal effect is also corresponding better, can shorten the hydraulic detention time of BAF.Autumn and winter temperature is low, though both treatment efficiencies all reduce, autumn and winter, the reuse water yield demand of green building reduced, and can satisfy the requirement of effluent quality through the method that reduces load, to satisfy the quality of reused water requirement.In combination process, lateral flow biological aerated filter is equivalent to the pre-treatment pond of lateral flow artificial swamp, can remove most suspended substance, organism and ammonia nitrogen, and realizes nitratedly, alleviates the processing load of follow-up artificial swamp.The lateral flow artificial swamp is the advanced treatment part of this combination process, mainly removes total phosphorus and remaining suspension thing, and realizes the biological denitrification denitrogenation.
Main technical details:
Under the normal temperature:
Lateral flow biological aerated filter treatment unit HRT=9h, hydraulic load are 0.75m/h, and GWR is 3:1;
Lateral flow artificial swamp treatment unit HRT=24h, hydraulic load is 0.5m
3/ m
2D;
Under the low temperature:
Lateral flow biological aerated filter treatment unit HRT=12h, hydraulic load are 0.6m/h, and GWR is 4:1;
Lateral flow artificial swamp treatment unit HRT=36h, hydraulic load is 0.33m
3/ m
2D;
Utilize the aforesaid combination system; The green building sewage gets into pretreatment system through header, and the pretreatment system water outlet enters lateral flow biological aerated filter and carries out pre-treatment, mainly removes most suspended substances, organism and ammonia nitrogen in the sewage; And realize nitrated; Water outlet inserts the lateral flow artificial swamp again and carries out advanced treatment, mainly removes total phosphorus and remaining suspended substance in the sewage, and realizes biological denitrification denitrogenation; The requirement of " urban sewage reutilization city miscellaneous water water quality " (GB/T18920-2002) and " urban sewage reutilization water for scenic environment use water quality " (GB/T18921-2002) is satisfied in water outlet simultaneously.This combination process has made full use of advantage separately, and remedies mutual deficiency, can realize ensureing effluent quality simultaneously, and operational management is simple and convenient, reduces the characteristics of construction investment and running cost.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and is out of shape interior.
Claims (5)
1. lateral flow biological aerated filter-lateral flow artificial swamp combined system to the green building life sewage treatment and reuse; It is characterized in that: this system is made up of lateral flow biological aerated filter and lateral flow artificial swamp two portions, and both form the knockdown waste water treating and reutilizing of cover system; The green building sewage enters lateral flow biological aerated filter and carries out pre-treatment through after the pre-treatment, and water outlet inserts the lateral flow artificial swamp again and carries out advanced treatment, handles the back reusing sewage in green building;
Said lateral flow biological aerated filter is connected to form by equalizing tank, A section packing area, zone of transition, B section packing area and exhalant region successively, and aerating pipelines and aeration head are set at the bottom of the filter tank; Sewage gets into equalizing tank through water inlet pipe, after perforation plate gets into A section packing area, the filler frame staggered arrangement in the A section packing area; Form S type water stream channel between the filler frame, make most of sewage pass filler, small portion sewage is walked around the filler frame; Through the space between filler frame and pool wall, converge next filler frame of entering with the sewage that passes the filler frame, the back gets into zone of transition; After zone of transition, get into B section packing area, at last by the exhalant region water outlet, through the rising pipe approaching side to person who lives in exile worker's wetland;
Parallel staggered division plate is set in the said lateral flow artificial swamp, and the current raceway groove with spatial in the wetland is divided into S shape loads cobble in raceway groove, and the plantation waterplant.
2. lateral flow biological aerated filter-lateral flow artificial swamp the combined system to the green building life sewage treatment and reuse according to claim 1; It is characterized in that: the cobble of filling 20-80mm grating in the raceway groove in the lateral flow artificial swamp, depth of packing 0.5-0.9m.
3. lateral flow biological aerated filter-lateral flow artificial swamp the combined system to the green building life sewage treatment and reuse according to claim 1 and 2, it is characterized in that: the operating mode matching relationship of said combined system is following:
System at normal temperatures, lateral flow biological aerated filter treatment unit HRT=9h, hydraulic load are 0.75m/h, GWR is 3:1; Lateral flow artificial swamp treatment unit HRT=24h, hydraulic load is 0.5m
3/ m
2D;
System is 5-10 ℃ of when operation in the winter time, and lateral flow biological aerated filter treatment unit HRT=12h, hydraulic load are 0.6m/h, and GWR is 4:1; Lateral flow artificial swamp treatment unit HRT=36h, hydraulic load is 0.33m
3/ m
2D.
4. lateral flow biological aerated filter-lateral flow artificial swamp the combined system to the green building life sewage treatment and reuse according to claim 3; It is characterized in that: the body bottom is provided with back flushing inlet pipe and back flushing water inlet pipe in the pond of lateral flow biological aerated filter; Body top is provided with the back flushing rising pipe in the pond, forms back-purge system.
5. lateral flow biological aerated filter-lateral flow artificial swamp the combined system to the green building life sewage treatment and reuse according to claim 3; It is characterized in that: staggered filling particle diameter is the zeolite of 10-15mm in the A of lateral flow biological aerated filter section condiment district, and B section packing area filling particle diameter is the zeolite of 3-6mm.
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| CN102153253B true CN102153253B (en) | 2012-07-25 |
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| CN102642925B (en) * | 2012-04-28 | 2014-02-12 | 重庆大学 | Annular aeration biological filter sewage low carbon treatment reactor |
| 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 |
| CN103130382B (en) * | 2013-03-15 | 2014-06-11 | 重庆大学 | Aeration biological filter-artificial wetland combination sewage low-carbon treatment reactor |
| CN106365319A (en) * | 2016-11-04 | 2017-02-01 | 南大（常熟）研究院有限公司 | Artificial wetland matrix combination filling method |
| CN106477815A (en) * | 2016-11-07 | 2017-03-08 | 南大（常熟）研究院有限公司 | A kind of method by changing hydraulics raising artificial swamp clean effect |
| CN106517523A (en) * | 2016-11-07 | 2017-03-22 | 南大（常熟）研究院有限公司 | Method for improving decontamination effect of constructed wetland by filling iron-copper internal electrolysis matrix |
| CN107500422A (en) * | 2017-10-11 | 2017-12-22 | 上海应用技术大学 | Sanitary sewage cascade pond and Constructed Wetland For Purifying method based on Anammox |
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Application publication date: 20110817 Assignee: Chongqing Sanxia environmental protection (Group) Co., Ltd. Assignor: Chongqing University Contract record no.: 2013500000010 Denomination of invention: Side flow aeration biofilter-side flow artificial wetland combination reclaimed water treatment system Granted publication date: 20120725 License type: Exclusive License Record date: 20130407 |
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