CN102476900A - Sewage and sludge treatment method - Google Patents

Sewage and sludge treatment method Download PDF

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Publication number
CN102476900A
CN102476900A CN2010105527982A CN201010552798A CN102476900A CN 102476900 A CN102476900 A CN 102476900A CN 2010105527982 A CN2010105527982 A CN 2010105527982A CN 201010552798 A CN201010552798 A CN 201010552798A CN 102476900 A CN102476900 A CN 102476900A
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CN
China
Prior art keywords
sludge
wetland
sewage
treatment
sewage sludge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010105527982A
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Chinese (zh)
Inventor
陈洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian Chuangda Technology Trade Market Co Ltd
Original Assignee
Dalian Chuangda Technology Trade Market Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalian Chuangda Technology Trade Market Co Ltd filed Critical Dalian Chuangda Technology Trade Market Co Ltd
Priority to CN2010105527982A priority Critical patent/CN102476900A/en
Publication of CN102476900A publication Critical patent/CN102476900A/en
Pending legal-status Critical Current

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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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • 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 invention particularly relates to a sewage and sludge treatment method, which realizes treatment of sewage and sludge and leachate thereof by the aid of an artificial wetland ecological system. The technical scheme includes that wetland plants are planted in a vertical flow artificial wetland, sewage and sludge are intermittently discharged into the surface of the artificial wetland with a special structure, and a liquid portion of the sewage and sludge enters a water collecting pipe on the lower portion of the wetland after passing through a sludge layer and a wetland packing layer and then is discharged. In the process, pollutant in the liquid is effectively purified by the wetland. A sludge solid portion is stopped on the surface of the wetland, and is reduced and stabilized by the aid of a self-digestion function and ecological activities of the wetland. The solid sludge portion is removed regularly, composting is carried out, and the wetland plants are used as additives for the composting. The sewage and sludge treatment method is simple in process, convenient in operation management and low in operation cost, and saves investment, the sewage and the sludge are reduced, stabilized, harmless and recycled after being treated by the system, and the sewage and sludge treatment method is wide in application prospect.

Description

A kind of treatment process of sewage sludge
Technical field
The present invention relates to a kind of treatment process of sewage sludge, specifically be meant and utilize the artificial swamp ecosystem to carry out sewage sludge and percolate Treatment Technology 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 now is the raising that is accompanied by sewage treatment capacity, 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 the generation of municipal effluent increasing with the improving constantly of wastewater treatment rate, consequent sewage sludge output is more and more.Sewage sludge is the semi-drying solid waste that a kind of water ratio is high, contain large amount of organic and hazardous and noxious substances (comprising mikrobe, 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, with causing serious secondary pollution problem.
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 through 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 that WWT is able to the final guarantee of implementing 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 techniques directions, and directly had influence on the effect of follow-up sludge disposal work.(1) the sludge treatment main flow of China is to be main foreign technology with digestion.But since sludge digestion facilities design and managerial complicacy, several sludge digestion facilities of design and construction
Result of use all not really desirable; Add fast-growth; The personnel that are engaged in design and management are always in constantly adjustment and renewal; 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 make
Usefulness adds understanding and experienced deficiency, and 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, industriallization 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, mikrobe 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, and wherein liquid portion advances behind sludge blanket, wet land filler layer
Go into to be positioned at the header of 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 with stable.Mud can be looked particular case and regularly remove, and carries out compost, wetland plant (reed, cattail, calamus etc.)
The additive that 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 with 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; Lean on natural, ecological to administer and pollute, required manpower is few, and technology is simple, is convenient to promote; Through 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 through 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 one perforation cloth mud pipes: 2 one wetlands surface; 3 one sludge blankets; 4 one packing layers; 5-layer catchments; 6-----: catchment
Pipe: 7-ventpipe; The 8-wetland plant; 9_ ' waterproof layer: 10--water outlet; 11 1 root systems 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 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, and like boiler ash sediment, rubble, sand, gravel, volcanic cinder, building waste etc., the filler flourishing with hole is the best; The layer 5 that catchments is arranged in packing layer 4 bottoms, is made up of rubble, rubble etc., and the filler flourishing with hole is the best; 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 definite according to Soil structure and waterproof requirement etc.; Wetland plant 8 visual regional situation 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 need survive the winter.

Claims (1)

1. the treatment process of a sewage sludge, it is characterized in that comprising following process: sewage sludge enters the artificial swamp surface off and on, and wherein liquid portion gets into 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;
(1) a kind of method that adopts the artificial swamp sewage sludge, it is characterized in that: the artificial swamp that is adopted is a vertical current constructed wetland.
CN2010105527982A 2010-11-22 2010-11-22 Sewage and sludge treatment method Pending CN102476900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105527982A CN102476900A (en) 2010-11-22 2010-11-22 Sewage and sludge treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105527982A CN102476900A (en) 2010-11-22 2010-11-22 Sewage and sludge treatment method

Publications (1)

Publication Number Publication Date
CN102476900A true CN102476900A (en) 2012-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105527982A Pending CN102476900A (en) 2010-11-22 2010-11-22 Sewage and sludge treatment method

Country Status (1)

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CN (1) CN102476900A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102992563A (en) * 2012-12-05 2013-03-27 浙江海洋学院 Sea water desalinization discharged sludge artificial wetland treatment system and treatment method thereof
CN105967475A (en) * 2016-06-27 2016-09-28 苏州金螳螂园林绿化景观有限公司 Sludge purifying, regulating and treating system
CN106007310A (en) * 2016-07-06 2016-10-12 吉林建筑大学 Ecological method for treating excess sludge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102992563A (en) * 2012-12-05 2013-03-27 浙江海洋学院 Sea water desalinization discharged sludge artificial wetland treatment system and treatment method thereof
CN105967475A (en) * 2016-06-27 2016-09-28 苏州金螳螂园林绿化景观有限公司 Sludge purifying, regulating and treating system
CN106007310A (en) * 2016-07-06 2016-10-12 吉林建筑大学 Ecological method for treating excess sludge

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120530

C02 Deemed withdrawal of patent application after publication (patent law 2001)