CN205501051U - Landfill leachate degree of depth processing system based on ozone advanced oxidation - Google Patents

Landfill leachate degree of depth processing system based on ozone advanced oxidation Download PDF

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Publication number
CN205501051U
CN205501051U CN201620165324.5U CN201620165324U CN205501051U CN 205501051 U CN205501051 U CN 205501051U CN 201620165324 U CN201620165324 U CN 201620165324U CN 205501051 U CN205501051 U CN 205501051U
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China
Prior art keywords
ozone
oxidation
heavy metal
landfill leachate
advanced oxidation
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Expired - Fee Related
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CN201620165324.5U
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Chinese (zh)
Inventor
柴苗峰
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Sichuan Caring Environment Engineering Co Ltd
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Sichuan Caring Environment Engineering Co Ltd
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Abstract

The utility model provides a landfill leachate degree of depth processing system based on ozone advanced oxidation, includes consecutive coagulating sedimentation tank, ozone advanced oxidation device, heavy metal processing apparatus, denitrification biological filter and biological activity carbon filtration pond. The utility model discloses an ozone advanced oxidation technologies utilizes catalysis unit to arouse ozone to turn into the hydroxyl free radical, utilizes the hydroxyl free radical that has high reduction potential as main oxidant, makes the fracture of organic long -chain, the oxidation of difficult degradation among the landfill leachate, is the micro molecule with big molecular decomposition to make partial micro molecule further be decomposed into CO2, H2O and mineral salt, but improved landfill leachate's biochemical treatment performance. The antithetical couplet usefulness that the cooperation mix to be congealed, the technique is got rid of to biological denitrification, biological activity charcoal and heavy metal effectively reduces indexs such as COD, TN, ammonia nitrogen and heavy metal content, makes landfill leachate after handling reach the requirement of " domestic waste landfill yard pollution control standards " (GB 16889 - 2008).

Description

A kind of percolate advanced treatment system based on ozone high grade oxidation
Technical field
This utility model relates to water-treatment technology field, a kind of percolate advanced treatment system based on ozone high grade oxidation.
Background technology
In revised " household refuse landfill sites Environmental capacity standard " (GB 16,889 2008), the indexs such as BOD, COD, ammonia nitrogen, total nitrogen, heavy metal in percolate are proposed tightened up discharge standard.For reaching the requirement of new standard, need percolate to carry out advanced treating.At present, in the further treatment technique of domestic employing, method associated with biochemical treatment and membrane technology can reach preferably treatment effect.But owing to high performance membrane is when processing refuse leachate, there is problems in that 1. is the most blocked and impaired, thus reduce treatment effeciency, cause processing cost to improve;2. the concentrated solution intractability produced is relatively big, and processing cost is high.Therefore, country encourages development to use ozone etc. not produce the processing method of secondary pollution.
When using conventional ozone processing scheme, owing to percolate can carry out rapid-action organic compound with ozone and inorganic chemical substrate concentration is higher, thus affect ozonisation mass transfer velocity;Simultaneously, percolate exists the inhibitor of a large amount of ozone decomposed and the trapping agent of hydroxyl radical free radical, thus stop the efficient indirect oxidation reaction carried out with the hydroxyl radical free radical of high reduction potential, causing being difficult to can not be removed by the pollutant of ozone direct oxidation, in the percolate after process, COD, total nitrogen (TN), ammonia nitrogen and content of beary metal can not reach the requirement of new standard.
Utility model content
This utility model provides a kind of percolate advanced treatment system based on ozone high grade oxidation, to solve the problems referred to above.Use ozone high grade oxidation technology, catalyst unit is utilized to excite ozone to be converted into hydroxyl radical free radical, utilize and there is the hydroxyl radical free radical of high reduction potential as primary oxidizers, the organic long-chain making difficult degradation in percolate ruptures, aoxidizes, macromole is decomposed into little molecule, and makes the little molecule of part be further broken into CO2、H2O and mineral salt, improve percolate can biochemical treatment performance.Coordinate coagulation, biological denitrification, biological activated carbon and the combination of heavy metal removal technology, effectively reduce the indexs such as COD, TN, ammonia nitrogen and content of beary metal, make the percolate after process reach the requirement of " household refuse landfill sites Environmental capacity standard " (GB 16,889 2008).
In order to realize the purpose of this utility model, plan employing techniques below:
A kind of percolate advanced treatment system based on ozone high grade oxidation, it is characterised in that include coagulative precipitation tank, ozone high grade oxidation device, heavy metal processing means, denitrification bio-filter and the biological activated carbon filter being sequentially connected;Described ozone high grade oxidation device includes ozone generating unit, catalyst unit and oxidation processes unit, described catalyst unit is arranged at inside described oxidation processes unit, described ozone generating unit is connected with described oxidation processes unit by pipeline, and described oxidation processes unit is connected with described coagulative precipitation tank and described heavy metal processing means respectively.
The beneficial effects of the utility model are:
1. use ozone high grade oxidation technology, ozone is excited the hydroxyl radical free radical for having higher reduction potential, makes the Organic substance of difficult degradation in percolate be decomposed into small-molecule substance, CO2、H2O and mineral salt, thus improve percolate can biochemical treatment performance.
2. ozone high grade oxidation technology is combined with coagulation, biological denitrification, biological activated carbon and heavy metal removal technology, main consumed cabin air or oxygen, do not produce secondary pollution, safe and reliable, and can effectively reduce the indexs such as COD, TN, ammonia nitrogen and content of beary metal, make the percolate after process reach the requirement of " household refuse landfill sites Environmental capacity standard " (GB 16,889 2008).
Accompanying drawing explanation
Fig. 1 shows direction across bridge structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, a kind of percolate advanced treatment system based on ozone high grade oxidation, it is characterized in that, including the coagulative precipitation tank 1 being sequentially connected, ozone high grade oxidation device 2, heavy metal processing means 3, denitrification bio-filter 4 and biological activated carbon filter 5.Described coagulative precipitation tank 1 advantageously reduces COD value, and removes part ammonia nitrogen and heavy metal;Described ozone high grade oxidation device 2 carries out crucial process to refuse leachate, is conducive to improving percolate biodegradability energy, and reduces COD value, TN value and content of beary metal;Described heavy metal processing means 3 is conducive to further Adsorption of Heavy Metal Ions, makes the content of beary metal in the refuse leachate after process up to standard;Described denitrification bio-filter 4 advantageously reduces ammonia nitrogen and TN;Described biological activated carbon filter 5 is conducive to adsorbing small organic molecule, lowers TN content further, makes the ammonia nitrogen in the refuse leachate after process and TN content up to standard.
Described ozone high grade oxidation device 2 includes ozone generating unit 21, catalyst unit 22 and oxidation processes unit 23.It is internal that described catalyst unit 22 is arranged at described oxidation processes unit 23, and described ozone generating unit 21 is connected with described oxidation processes unit 23 by pipeline, and described oxidation processes unit 23 is connected with described coagulative precipitation tank 1 and described heavy metal processing means 3 respectively.After the ozone catalysis by described catalyst unit 22, generate the hydroxyl radical free radical with higher reduction potential, there is higher oxidability, it is possible to the hardly degraded organic substance in degraded percolate up hill and dale, and main consumed cabin air or oxygen, do not produce secondary pollution.
This utility model specific implementation method is as follows:
Percolate flows in described coagulative precipitation tank 1.Under the effect of coagulant, the particle in percolate and colloidal substance coagulative precipitation, thus reduce COD value, ammonia-nitrogen content and heavy metal ion content.
Subsequently, refuse leachate is pumped in described oxidation processes unit 23.The ozone of preparation in described ozone generating unit 21, the hydroxyl radical free radical with higher reduction potential is generated under the catalysis of described catalyst unit 22, enter in described oxidation processes unit 23, the long-chain Organic substance being difficult to degrade in oxidation percolate fragments into less molecule, and partial oxidation is CO2, H2O and mineral salt, thus reduce COD and TN;Oxidation heavy metal ion generates precipitation, thus reduces content of beary metal.Refuse leachate completes major part purified treatment in described ozone high grade oxidation device 2, and making can biochemical treatment performance boost.
Subsequently, refuse leachate is pumped in described heavy metal processing means 3.Due to major part heavy metal ion in percolate, it is removed in described ozone high grade oxidation device 2, the most described heavy metal processing means 3 can select existing any processing means, carries out after-treatment, to guarantee that in the percolate after processing, content of beary metal is up to standard.
Subsequently, refuse leachate is pumped in described denitrification bio-filter 4.The itrogenous organic substance of the small-molecular-weight generated by hydroxyl oxidize in refuse leachate, under the effect of nitrification bacteria, is degraded to N further2Or N2O is removed, thus reduces TN value and ammonia-nitrogen content.
Finally, refuse leachate is pumped into described biological activated carbon filter 5.By microorganism and the synergy of activated carbon, adsorb small organic molecule, and improve refuse leachate odor.
After the percolate process by above-mentioned each device, it is possible to ensure that its COD, TN, ammonia-nitrogen content and content of beary metal reach the requirement of " household refuse landfill sites Environmental capacity standard " (GB 16,889 2008).

Claims (1)

1. a percolate advanced treatment system based on ozone high grade oxidation, it is characterized in that, including the coagulative precipitation tank (1) being sequentially connected, ozone high grade oxidation device (2), heavy metal processing means (3), denitrification bio-filter (4) and biological activated carbon filter (5);Described ozone high grade oxidation device (2) includes ozone generating unit (21), catalyst unit (22) and oxidation processes unit (23), it is internal that described catalyst unit (22) is arranged at described oxidation processes unit (23), described ozone generating unit (21) is connected with described oxidation processes unit (23) by pipeline, and described oxidation processes unit (23) is connected with described coagulative precipitation tank (1) and described heavy metal processing means (3) respectively.
CN201620165324.5U 2016-03-04 2016-03-04 Landfill leachate degree of depth processing system based on ozone advanced oxidation Expired - Fee Related CN205501051U (en)

Priority Applications (1)

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CN201620165324.5U CN205501051U (en) 2016-03-04 2016-03-04 Landfill leachate degree of depth processing system based on ozone advanced oxidation

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Application Number Priority Date Filing Date Title
CN201620165324.5U CN205501051U (en) 2016-03-04 2016-03-04 Landfill leachate degree of depth processing system based on ozone advanced oxidation

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109293164A (en) * 2018-11-09 2019-02-01 深圳市市政设计研究院有限公司 A kind of method of sewage deep denitrogenation dephosphorizing
CN111087135A (en) * 2020-01-17 2020-05-01 河南英伟泰环境科技有限公司 Treatment process and equipment for landfill leachate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109293164A (en) * 2018-11-09 2019-02-01 深圳市市政设计研究院有限公司 A kind of method of sewage deep denitrogenation dephosphorizing
CN111087135A (en) * 2020-01-17 2020-05-01 河南英伟泰环境科技有限公司 Treatment process and equipment for landfill leachate

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Granted publication date: 20160824

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CF01 Termination of patent right due to non-payment of annual fee