CN101077805A - Treatment system for artificial wetland sewage and sludge - Google Patents

Treatment system for artificial wetland sewage and sludge Download PDF

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Publication number
CN101077805A
CN101077805A CNA2006100171405A CN200610017140A CN101077805A CN 101077805 A CN101077805 A CN 101077805A CN A2006100171405 A CNA2006100171405 A CN A2006100171405A CN 200610017140 A CN200610017140 A CN 200610017140A CN 101077805 A CN101077805 A CN 101077805A
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CN
China
Prior art keywords
sludge
wetland
artificial swamp
layer
sewage sludge
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Pending
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CNA2006100171405A
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Chinese (zh)
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崔玉波
刘志生
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崔玉波
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Priority to CNA2006100171405A priority Critical patent/CN101077805A/en
Publication of CN101077805A publication Critical patent/CN101077805A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The present invention relates to sewage and sludge treatment, and is especially artificial wetland ecosystem for treating sewage, sludge and percolate. The technological scheme of the present invention includes: planting phreatophyte in vertical current artificial wetland, draining sewage and sludge intermittently to the surface of the artificial wetland, making the liquid flow through the sludge layer and the wetland filling layer for effective purification before being collected in the collector pipe and drained, intercepting sludge in the surface of wetland for reducing and stabilizing, and eliminating sludge regularly for producing compost. The present invention has simple technological process, easy management, low cost and excellent sewage and sludge treating effect.

Description

Sewage sludge treatment system for artificial wetland
Technical field
The present invention relates to a kind of treatment process of sewage sludge, specifically be meant the technology of utilizing the artificial swamp ecosystem to carry out sewage sludge and percolate processing thereof, belong to the sewage sludge processing technology field.
Background technology
In recent decades, along with the rapid development of economy of China urban society, the construction of China's municipal drainage Infrastructure has been made significant headway.According to the regulation of " municipal sewage treatment and pollution prevention technique policy " of country, be not less than 70% to the wastewater treatment rate of national key cities in 2010 promulgation in 2000.According to such process, to 2015, the quantity of National urban sewage work will reach more than 2000, sewage treatment capacity will reach disposes of sewage more than 8,000 ten thousand tons every day, wastewater treatment rate will reach more than 70%, and the water of China pollutes controlled, and water surrounding is with remarkable improvement.But one once out in the cold, and the problem that must face again is the raising that is accompanied by sewage treatment capacity now, and sewage sludge does not but obtain appropriate processing and disposal.The sewage sludge of municipal sewage plant is the by product that the sewage treatment process system produces.Along with improving constantly of the increasing and wastewater treatment rate of the generation of municipal effluent, consequent sewage sludge output is more and more.Sewage sludge is a kind of water ratio height, contain the semi-drying solid waste of large amount of organic and hazardous and noxious substances (comprising microorganism, heavy metal and toxic organic compound etc.), big, easy corrupt, unstable, the foul smelling of its capacity, as not safe handling and disposal in addition, serious secondary pollution problem will be caused.
Sewage treatment capacity statistics by China in 2004, China produces about 7000 tons sludge cake from each Sewage Plant every day, this numeral and with annual 20% speed increase, and present is to throw aside more than 70%, the 20%th, landfill, less than 10% be by being back to the soil after the technical finesses such as compost.Owing to often contain germ and excessive heavy metal in the mud,, finally be not used for the soil as resource through a large amount of the throwing aside of mud of harmless treatment, usually cause secondary pollution, had a strong impact on the real achievement of environment comprehensive regulation.
Sewage and mud are two systems that solve municipal water pollution problem tight association again of equal importance.It is the guarantee that sewage disposal is finally implemented that sludge treatment is disposed, and in developed country, it is extremely important link that sludge treatment is disposed, and its investment accounts for 50~70% of sewage work's gross investment, and China is about 20~50%, even reaches 70%.
China since the eighties in last century large-scale modernized sludge treatment practice, and guided two kinds of different technique directions, and directly had influence on the effect of follow-up sludge disposal work.(1) the sludge treatment main flow of China is the foreign technology based on digestion.But because sludge digestion facilities design and managerial complicacy, the result of use of several sludge digestion facilities of design and construction is all not really desirable; Add fast-growth, the personnel that are engaged in design and management are always constantly adjusting and are upgrading, lack the chance and the empirical accumulation of practice, everybody avoids sludge digestion as much as possible and adopts other sludge treatment technique, and these technologies can not reach the agricultural innoxious level of the mud of national requirements; (2) owing to there is not ready-made technology directly to use, add understanding and experienced deficiency, the management of sludge disposal is also strict inadequately, adds the deficiency on the fund, and people have to launch various explorations.But setback several times, except several each and every one examples, most practice does not all have successfully.
In sum, solve the difficult problem of our the present sludge disposal that faces, the energy-saving sludge treatment technology of the low investment of exploitation, low working cost helps China's sewage sludge to handle cause undoubtedly.BOD, COD, TN, the TP of artificial swamp in removing municipal effluent, and handle aspects such as rainwater sewage, percolate, trade effluent, many successful Application have been arranged, industrialization also reaches to a certain degree, has shown that its huge potential exploitation is worth.The present invention is used for sewage sludge by artificial swamp successful experience and technology in the past with the natural sewage disposal technology of this kind of artificial swamp, by Driven by Solar Energy power, is issued to the effect of the mud of purifying waste water in the acting in conjunction of plant, microorganism and medium.
Summary of the invention
The purpose of this invention is to provide a kind of sewage sludge treatment system, to solve technical sophistication, high cost and the secondary pollution problems that exists in the present sewage sludge processing.The technical scheme that the present invention takes is: sewage sludge (excess sludge) is intermittently entered the artificial swamp surface with special construction by some cycles, wherein liquid portion is behind sludge blanket, wet land filler layer, enter the header that is positioned at the wetland bottom, afterwards discharging.In this process, pollution components in the liquid such as organism, nitrogen, phosphorus etc. are able to effective removal.Sewage sludge solid partly is retained in the wetland surface, leans on autodigestion and plant and microbial activities to obtain further decrement and stable.Mud can be looked particular case and regularly remove, and carries out compost, and the additive that wetland plant (reed, cattail, calamus etc.) can be used as compost uses.
Positively effect of the present invention is: utilize the ecological purification effect of artificial swamp composite highly effective that sewage sludge is carried out decrement and stable, has reduced investment, operation and maintenance cost is cheap, its construction cost is less than 5% of sewage work's construction cost, and its operation and maintenance cost is less than 10% of conventional sewage sludge; Administer pollution by natural, ecological, required manpower is few, and technology is simple, is convenient to promote; By special structure design, can be in system locally form little oxygen condition, the perfect condition that forms anaerobism, anoxic, aerobic condition on the whole and deposit helps the removal of pollution substance in the stable and percolate of mud; The mud percolate can reach emission standard after by system purification; The mud that accumulates in the system can be in system the growing plants compost, gather materials on the spot, accomplish the resources effective utilization, mud reaches resource utilization, avoids secondary pollution; When carrying out the sewage sludge processing, the purpose that can reach Environmental education, scientific research displaying and beautify the environment.
Description of drawings
Fig. 1 is the sewage sludge treatment system for artificial wetland schema.
Fig. 2 is the sewage sludge treatment system for artificial wetland structural representation.
Among Fig. 2: 1-perforation cloth mud pipe; 2-wetland surface; The 3-sludge blanket; The 4-packing layer; The 5-layer that catchments; The 6-header; The 7-ventpipe; The 8-wetland plant; The 9-waterproof layer; The 10-water outlet; The 11-root system of plant.
Embodiment
Make up artificial swamp shown in Figure 2, artificial swamp of the present invention is vertical current constructed wetland in form, can be built into rule or irregularly shaped with regard to landform, but degree of depth fluctuations, also can the hand excavation build up rule or irregularly shaped, the depth visual landform changes, generally greater than 60cm; Perforation cloth mud pipe 1 is positioned at 2 tops, wetland surface, is higher than the appropriate location that sludge blanket 3 accumulates maximum ga(u)ge, can an end cloth mud, also can pass through the even cloth mud of pipeline; Filler granularities in the packing layer 4 are generally up-thin-low-thick, also can adjust as required, can select natural or hand-stuff for use, as boiler ash sediment, rubble, sand, gravel, volcanic cinder, building waste etc., are the best with the filler of hole prosperity; The layer that catchments 5 is arranged in packing layer 4 bottoms, constitutes by rubble, rubble etc., and be the best with the filler of hole prosperity; Header 6 is arranged in the packing layer bottom, and the visual particular case of quantity is laid, and can be interconnected inside, also can be communicated with in water outlet place, also can not be communicated with and catchment separately and water outlet; But water outlet 10 position mounted valves are convenient to control water outlet; Ventpipe 7 is vertically arranged, is connected with header 6, and the visual particular case of quantity is laid; Waterproof layer 9 is built the bottom of artificial swamp and all around in, soil and underground water near preventing to pollute, and its material and mode of construction can be determined according to Soil structure and waterproof requirement etc.; Wetland plant 8 visual regional situations are selected resistant plants such as reed, cattail, also can select other wetland plant that is fit to; Root system of plant 11 is introduced by the wetland plant of plantation and growth forms; Affiliated facilities such as protection against cold and freezing conditions can be built in the cold area that maybe needs to survive the winter.
Carrying out sewage sludge by Fig. 1 flow process handles, sewage sludge through perforation cloth mud pipe 1 at wetland surface 2 uniform distribution, wherein solid part is dammed, form sludge blanket 3, liquid portion is descending through wetland surface 2, flow through behind packing layer 4 and the root system of plant 11, partially liq accumulates in the layer 5 that catchments for plant-growth needs during water shortage in the wetlands, remaining liquid is by header 6 dischargings, formation system water outlet 10, ventpipe 7 links to each other with air, and sludge blanket 3 is regularly removed, wetland plant 8 compost together with harvesting can be used for the forest land behind the compost, recyclings such as bad soil improvement.Sewage sludge after handling through the present invention has reached the requirement of minimizing, stabilization, innoxious and resource utilization, has significant environmental benefit, economic benefit and social benefit, and application prospect is very wide.

Claims (4)

1, a kind of method that adopts the artificial swamp sewage sludge, it is characterized in that comprising following process: sewage sludge enters the artificial swamp surface off and on, and wherein liquid portion enters the header of wetland bottom behind sludge blanket, wet land filler layer, afterwards discharging; Sewage sludge solid partly is retained in the wetland surface, and solid mud is regularly removed, and carries out compost, and wetland plant is as the additive of compost.
2, according to a kind of method that adopts the artificial swamp sewage sludge of claim 1, it is characterized in that: the artificial swamp that is adopted is a vertical current constructed wetland.
3, according to a kind of method that adopts the artificial swamp sewage sludge of claim 1 and 2, the artificial swamp feature that it adopts is: be made of wetland plant 8, packing layer 4, the layer 5 that catchments, perforation cloth mud pipe 1, header 6, ventpipe 7, waterproof layer 9, root system of plant 11 and waterproof layer 9.The relation of each several part is: perforation cloth mud pipe 1 is positioned at 2 tops, wetland surface; Filler granularity in the packing layer 4 is generally up-thin-low-thick, also can adjust as required, can select natural or hand-stuff for use, as boiler ash sediment, rubble, sand, gravel, volcanic cinder, building waste etc.; The layer 5 that catchments is arranged in packing layer 4 bottoms, is made of rubble, gravel etc.; Header 6 is arranged in the packing layer bottom, and the visual particular case of quantity is laid, and can be interconnected inside, also can be communicated with in water outlet place, also can not be communicated with and catchment separately and water outlet; But water outlet 10 position mounted valves are convenient to control water outlet; Ventpipe 7 is vertically arranged, is connected with header 6, and the visual particular case of quantity is laid; Waterproof layer 9 is built the bottom of artificial swamp and all around in; Wetland plant 8 visual regional situations are selected resistant plants such as reed, cattail, also can select other wetland plant that is fit to.
4, according to claim 1, a kind of method that adopts the artificial swamp sewage sludge of 2 or 3, it is characterized in that: the cold area of surviving the winter of maybe needing, artificial swamp is built affiliated facilities such as protection against cold and freezing conditions.
CNA2006100171405A 2006-08-30 2006-08-30 Treatment system for artificial wetland sewage and sludge Pending CN101077805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2006100171405A CN101077805A (en) 2006-08-30 2006-08-30 Treatment system for artificial wetland sewage and sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2006100171405A CN101077805A (en) 2006-08-30 2006-08-30 Treatment system for artificial wetland sewage and sludge

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CN101077805A true CN101077805A (en) 2007-11-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101781065A (en) * 2010-03-12 2010-07-21 上海环境工程技术有限公司 Technique for cultivating bulrush and removing total nitrogen in artificial marsh of landfill leachate
CN102267762A (en) * 2011-07-12 2011-12-07 天津城市建设学院 Intermittent water seepage type salt-alkali resistant plant-soil ecological filter bed
CN103896418A (en) * 2014-04-09 2014-07-02 西南大学 Draw box type wastewater purification system and use method thereof
CN105174473A (en) * 2015-09-21 2015-12-23 中国农业大学 Method for reinforced artificial wetland deep biogas slurry treatment through aeration
CN109678248A (en) * 2019-01-21 2019-04-26 深圳文科园林股份有限公司 A kind of preprocess method of artificial wetland treatment high suspended matter waste water

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101781065A (en) * 2010-03-12 2010-07-21 上海环境工程技术有限公司 Technique for cultivating bulrush and removing total nitrogen in artificial marsh of landfill leachate
CN102267762A (en) * 2011-07-12 2011-12-07 天津城市建设学院 Intermittent water seepage type salt-alkali resistant plant-soil ecological filter bed
CN103896418A (en) * 2014-04-09 2014-07-02 西南大学 Draw box type wastewater purification system and use method thereof
CN103896418B (en) * 2014-04-09 2016-01-06 西南大学 One takes out box type sewage purification system and using method thereof
CN105174473A (en) * 2015-09-21 2015-12-23 中国农业大学 Method for reinforced artificial wetland deep biogas slurry treatment through aeration
CN105174473B (en) * 2015-09-21 2017-10-31 中国农业大学 A kind of system of enhanced aeration artificial swamp advanced treating biogas slurry
CN109678248A (en) * 2019-01-21 2019-04-26 深圳文科园林股份有限公司 A kind of preprocess method of artificial wetland treatment high suspended matter waste water

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