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A trace ozone-aeration biofilter integrated reactor resisting impact load

A technology of biological aerated filter and ozone aeration, applied in the fields of granular microbial carrier treatment, chemical instruments and methods, oxidized water/sewage treatment, etc. To avoid problems such as low stability, to achieve the effect of ensuring efficient treatment, novel structure, and improving biodegradability

Active Publication Date: 2017-07-04
中节能工程技术研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biodegradability of landfill leachate after biological treatment is low, which is not conducive to the operation of biological aerated filter

Method used

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  • A trace ozone-aeration biofilter integrated reactor resisting impact load
  • A trace ozone-aeration biofilter integrated reactor resisting impact load

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0027] Embodiment 1: The micro-ozone biological aerated filter integrated reactor provided in this embodiment is suitable for advanced treatment of landfill leachate after biochemical treatment. like figure 1 and 2 As shown, the reactor adopts an inner and outer cylindrical sleeve structure, the inner cylindrical sleeve is used as a micro-ozone pre-oxidation unit, part of the outer cylindrical sleeve is used as a pre-oxidation water storage tank 3, and the other part is used as a biological aerated filter 7, wherein:

[0028] The bottom of the inner cylindrical sleeve is provided with an ozone aeration device, the upper part is provided with a gap in the water outlet area, and the upper part of the gap in the water outlet area is provided with an annular cover 1;

[0029] The upper part of the water storage tank 3 is provided with a water drop device 2, and the water drop device 2 is connected with the gap in the water outlet area;

[0030] A baffle is provided between the w...

specific Embodiment approach 2

[0049] Embodiment 2: This embodiment differs from Embodiment 1 in that the influent water of the reactor comes from the biochemically treated effluent in the leachate treatment process of a waste incineration plant. The ratio of reaction gas to water is 2:1, the hydraulic retention time is adjusted to 8h by the water flow speed, the ozone concentration is controlled by the ozone aeration device, and the aeration volume is controlled by the blower, both of which are continuously running. The measured influent average COD concentration is 400mg / L, ammonia nitrogen concentration is 90mg / L, and TN concentration is 120mg / L, and the average COD, ammonia nitrogen, and TN concentrations in the effluent water are 60mg / L, 5mg / L and 15mg / L respectively. The average removal rates of COD, ammonia nitrogen and TN in the reactor are 85%, 94% and 87.5% respectively.

specific Embodiment approach 3

[0050] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the influent of the reactor comes from the secondary effluent of leachate from a landfill site, and the water quality fluctuates greatly and the biodegradability is poor. The ratio of reaction gas to water is 2:1, and the hydraulic retention time is adjusted to 4 hours by the water flow rate. When the COD concentration of the influent changes from 300mg / L to 3000mg / L, the COD concentration of the effluent is between 50~350mg / L, and the average removal rate is 80 %, when the influent ammonia nitrogen is 90~120mg / L, the effluent ammonia nitrogen concentration is below 40mg / L, and the ammonia nitrogen removal rate reaches over 66.7%. When the influent TN concentration is 120~160mg / L, the effluent TN concentration is below 20mg / L, and the removal rate reaches 87.5%.

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Abstract

A trace ozone-aeration biofilter integrated reactor resisting impact load is disclosed. An inner and outer cylinder sleeve type structure is adopted by the reactor. An inner cylinder sleeve is adopted as a trace ozone pre-oxidation unit. One part of an outer cylinder sleeve is adopted as a water storage tank, and the other part of the outer cylinder sleeve is adopted as an aeration biofilter. The bottom of the inner cylinder sleeve is provided with an ozone aeration device, and the upper part of the inner cylinder sleeve is provided with a water discharging zone opening. The upper part of the water storage tank is provided with a water dropping device connected to the water discharging zone opening. A baffle plate is between a water storage zone and the aeration biofilter. The bottom of the baffle plate is provided with a micropore separating plate. The bottom of the aeration biofilter is provided with an aeration device, the aeration biofilter is filled with a filler, and the upper part of the aeration biofilter is provided with a water outlet. The reactor integrates trace ozone pre-oxidation and functions of the aeration biofilter, utilizes ozone oxidation to convert macromolecule organic matters into small-molecule compounds to increase biodegradability of waste water, and allows the aeration biofilter to be operated efficiently, thus achieving an objective of removing residual pollutants in the waste water and deeply treating landfill leachate.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and relates to an integrated reactor capable of resisting impact load, low in energy consumption and suitable for advanced treatment of landfill leachate. Background technique [0002] With the development of cities and the improvement of living standards, the amount of municipal solid waste is increasing year by year, and solid waste has become a global pollution problem. At present, the commonly used waste disposal methods include sanitary landfill, incineration, composting and so on. Landfill leachate is a kind of high-concentration and high-ammonia-nitrogen organic wastewater with complex components, imbalanced microbial nutrient ratio, and large changes in water quality and quantity produced during landfill or incineration. If the landfill leachate is not treated, it will cause serious secondary pollution to the groundwater, the atmosphere and other environments, and the toxic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/06C02F101/16
CPCC02F1/78C02F3/02C02F2003/003C02F2101/16C02F2103/06
Inventor 丁晶尉然徐伟赵庆良孔祥西韩帮军李海涛邱明建
Owner 中节能工程技术研究院有限公司
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