CN214167513U - Landfill leachate full-discharge treatment system - Google Patents
Landfill leachate full-discharge treatment system Download PDFInfo
- Publication number
- CN214167513U CN214167513U CN202022410212.0U CN202022410212U CN214167513U CN 214167513 U CN214167513 U CN 214167513U CN 202022410212 U CN202022410212 U CN 202022410212U CN 214167513 U CN214167513 U CN 214167513U
- Authority
- CN
- China
- Prior art keywords
- membrane separation
- special membrane
- separation system
- landfill leachate
- communicated
- 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.)
- Active
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a garbage leachate full-discharge treatment system, which comprises a homogeneous regulating tank, a pre-filtering system, a multi-section special membrane separation system and a nitrogen removal system which are sequentially arranged and connected through pipelines; the homogeneous adjusting tank is communicated with a landfill leachate collecting and draining system of a landfill site, an inlet of the pre-filtering system is communicated with the homogeneous adjusting tank, the pre-filtering system is used for removing suspended matters and colloid impurities in the landfill leachate, an inlet of the multi-section special membrane separation system is communicated with a water outlet of the pre-filtering system, the multi-section special membrane separation system is used for intercepting most organic matters in the landfill leachate, an inlet of the nitrogen removal system is communicated with a permeate liquid outlet of the multi-section special membrane separation system, and the nitrogen removal system contains an adsorbent to adsorb residual ammonia nitrogen in the landfill leachate. The utility model discloses can realize landfill leachate's full discharge to reach standard, prevent the whole change of landfill environment and the increase of handling the degree of difficulty.
Description
Technical Field
The utility model belongs to the technical field of landfill leachate handles, a landfill leachate total discharge processing system is related to.
Background
The landfill leachate has the characteristics of high pollutant concentration, complex components, extremely unstable change and the like, and has the following main characteristics:
1) the water quality fluctuation is large: the water quality of the landfill leachate has large change with time, the time change coefficient and the daily change coefficient are generally as high as 200 percent and 300 percent, the water quality of the old landfill site has relatively large change with time, and the water quality has large difference in different landfill time periods. The percolate at the initial stage of landfill is black, has good biodegradability and is easy to treat; along with the extension of the landfill time, the percolate is gradually brown, the biodegradability is deteriorated, the ammonia nitrogen concentration is obviously increased, and the percolate is more and more difficult to treat. Therefore, the selection of the percolate treatment process of any refuse landfill not only needs to meet the recent water quality characteristics and treatment requirements, but also needs to be compatible with and adapt to the percolate water quality characteristics after the operation period is changed.
2) Biodegradability (biodegradability) decreases gradually with increasing landfill age: the landfill leachate contains a large amount of organic pollutants, volatile fatty acids are gradually reduced along with the prolonging of the landfill time, and the specific gravity of fulvic acid substances is increased. This change in the organic component means BOD5The reduction of COD, namely the biodegradability of the percolate. BOD in leachate5The BOD of the garbage generally increases and reaches a peak gradually after about 6 months to 2 years after the garbage is filled5Most of them are soluble organic substances.
3) Imbalance of the proportion of nutrient elements: the ammonia nitrogen concentration in the leachate is high, and the phosphorus element is deficient. The content of phosphorus element in the landfill leachate is usually low, especially the leachate Ca2+The soluble phosphate concentration is lower due to the influence of concentration and total alkalinity level. According to the water quality survey of large and medium-sized landfill sites in China, the ammonia nitrogen of the percolate is still maintained at the high concentration of 700-1800ppm within a quite long period of time. Experiments prove that the high-concentration ammonia nitrogen in the leachate can reduce dehydrogenase and resist the denitrification process of microorganism denitrification, so that the carbon source is seriously insufficient.
At present, the landfill leachate treatment generally adopts a combined treatment process of biochemistry, tubular ultrafiltration and nanofiltration/reverse osmosis or adopts a disc tubular reverse osmosis device to carry out concentration and reduction treatment on the landfill leachate. The two processes have high energy consumption generally, 20 to 30 percent of concentrated solution can be generated, the part of concentrated solution is generally subjected to landfill site reverse filling at the present stage, the water quantity of 20 to 30 percent of percolate concentrated solution is still large, and how to reasonably perform reduction treatment on the concentrated solution and even discharge treatment reaching the standard in total is one of the key research subjects of the percolate treatment industry at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a landfill leachate total discharge treatment system to the problem that exists among the prior art.
For this reason, the above-mentioned purpose of the present invention is achieved by the following technical solutions:
the utility model provides a landfill leachate total discharge processing system which characterized in that: the garbage leachate full-discharge treatment system comprises a homogeneous regulating tank, a pre-filtering system, a multi-section special membrane separation system and a nitrogen removal system which are sequentially arranged and connected through pipelines; the homogeneous adjusting tank is communicated with a landfill leachate collecting and draining system of a landfill site, an inlet of the pre-filtering system is communicated with the homogeneous adjusting tank, the pre-filtering system is used for removing suspended matters and colloid impurities in the landfill leachate, an inlet of the multi-section special membrane separation system is communicated with a water outlet of the pre-filtering system, the multi-section special membrane separation system is used for intercepting most organic matters in the landfill leachate, an inlet of the nitrogen removal system is communicated with a permeate liquid outlet of the multi-section special membrane separation system, and the nitrogen removal system contains an adsorbent to adsorb residual ammonia nitrogen in the landfill leachate.
When adopting above-mentioned technical scheme, the utility model discloses can also adopt or make up and adopt following technical scheme:
as the utility model discloses a preferred technical scheme: the multi-section special membrane separation system comprises a first-section special membrane separation system and a second-section special membrane separation system, a permeate liquid outlet of the first-section special membrane separation system is communicated with an inlet of the second-section special membrane separation system, and a concentrated liquid outlet of the second-section special membrane separation system is communicated with an inlet of the first-section special membrane separation system.
As the utility model discloses a preferred technical scheme: and a concentrated solution outlet of the special membrane separation system at the first working section is communicated to a refuse landfill.
As the utility model discloses a preferred technical scheme: the molecular weight cutoff of a membrane element adopted in a special membrane separation system at one section of the garbage leachate full-discharge treatment system is 2000-3000 daltons, and the molecular weight cutoff of a membrane element adopted in a special membrane separation system at the second section of the garbage leachate full-discharge treatment system is 300-500 daltons.
As the utility model discloses a preferred technical scheme: the pre-filtering system is one or a combination of a plurality of medium filtering systems, organic micro-filtering systems and volcanic rock filtering systems.
As the utility model discloses a preferred technical scheme: the adsorbent in the nitrogen removal system is one or a combination of more of modified zeolite, modified activated carbon, modified biomass carbon and ammonia nitrogen adsorption resin.
The utility model provides a landfill leachate total discharge treatment system has following advantage:
1) the treatment aim of standard-reaching discharge of the total amount of the landfill leachate can be realized, the phenomenon that the overall concentration of the landfill leachate is increased due to the fact that the concentrated solution of the traditional membrane treatment system is back-filled to a landfill is avoided, and the overall change of the environment of the landfill and the increase of the treatment difficulty are prevented;
2) heavy metal capture agents are added into the homogenizing adjusting tank to form heavy metal precipitates, and the heavy metal precipitates are effectively removed through a pre-filtering system to remove heavy metals; through the arrangement of special membranes with different molecular weight cut-off in a multi-section special membrane separation system, the removal of most COD can be realized, and more than 99% of NH can be realized through a nitrogen removal system3-N removal, with emissions according to national standards;
3) the water recovery rate can reach more than 70 percent after being treated by a special membrane system in two sections;
4) the difficult points in the discharge standard of the percolate are closely treated, and COD and NH in the percolate are treated by a two-stage membrane separation system and a nitrogen removal system3N, TN, and the like, without NaCl and Na in the percolate2SO4Inorganic salt is concentrated and recharged, so that the operation pressure is low when the system operates, and the operation power consumption and the cost are greatly reduced;
5) the utility model provides a practicality of system is stronger than traditional filtration liquid reconcentration processing system, and maneuverability and degree of automation are higher, and the social that economic nature and environment friendly brought is very obvious.
Drawings
Fig. 1 is the utility model provides a landfill leachate total discharge treatment system's schematic diagram.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A garbage leachate full-discharge treatment system comprises a homogeneous regulating tank, a pre-filtration system, a multi-section special membrane separation system and a nitrogen removal system which are sequentially arranged and connected through pipelines; the homogeneity equalizing basin is linked together with landfill's landfill leachate collection drainage guide system, the entry and the homogeneity equalizing basin of filtration system are linked together in advance, filtration system is arranged in getting rid of the suspended solid and the colloidal impurity in the landfill leachate in advance, the entry and the delivery port of filtration system are linked together in advance to the special membrane separation system of multiplex section, the special membrane separation system of multiplex section is used for intercepting most organic matters in the landfill leachate, the entry and the special membrane separation system's of multiplex section permeate liquid export of denitrogenation system are linked together, contain the adsorbent in the denitrogenation system in order to adsorb the residual ammonia nitrogen in the landfill leachate.
In this embodiment: the multi-section special membrane separation system comprises a first-section special membrane separation system and a second-section special membrane separation system, wherein a permeate liquid outlet of the first-section special membrane separation system is communicated with an inlet of the second-section special membrane separation system, and a concentrated liquid outlet of the second-section special membrane separation system is communicated with an inlet of the first-section special membrane separation system. The molecular weight cutoff of a membrane element adopted in a special membrane separation system at one section of the garbage leachate full-discharge treatment system is 2000-3000 daltons, and the molecular weight cutoff of a membrane element adopted in a special membrane separation system at the second section of the garbage leachate full-discharge treatment system is 300-500 daltons, so that the gradient type interception of organic molecules with different molecular weights is formed. Of course, in other embodiments, the multi-stage special membrane separation system may also include other multi-stage special membrane separation systems such as a three-stage or four-stage special membrane separation system. The special membranes in the special membrane separation system of the first working section and the special membrane separation system of the second working section are composite membranes with PA materials adhered on PES, and MOFs materials with different apertures are introduced into the PA materials in the membrane forming process, so that different molecular weight cut-offs of the membranes of the two working sections are controlled.
In this embodiment: the concentrated solution outlet of the special membrane separation system in the first working section is communicated to a refuse landfill.
In this embodiment: the pre-filtering system is one or the combination of a plurality of medium filtering systems, organic micro-filtering systems and volcanic rock filtering systems.
In this embodiment: the adsorbent in the nitrogen removal system is one or a combination of more of modified zeolite, modified activated carbon, modified biomass carbon and ammonia nitrogen adsorption resin.
The above detailed description is provided for explaining the present invention, and is only a preferred embodiment of the present invention, but not for limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made by the present invention are within the scope of the present invention.
Claims (5)
1. The utility model provides a landfill leachate total discharge processing system which characterized in that: the garbage leachate full-discharge treatment system comprises a homogeneous regulating tank, a pre-filtering system, a multi-section special membrane separation system and a nitrogen removal system which are sequentially arranged and connected through pipelines; the homogeneous adjusting tank is communicated with a landfill leachate collecting and draining system of a landfill site, an inlet of the pre-filtering system is communicated with the homogeneous adjusting tank, the pre-filtering system is used for removing suspended matters and colloid impurities in the landfill leachate, an inlet of the multi-section special membrane separation system is communicated with a water outlet of the pre-filtering system, the multi-section special membrane separation system is used for intercepting most organic matters in the landfill leachate, an inlet of the nitrogen removal system is communicated with a permeate liquid outlet of the multi-section special membrane separation system, and the nitrogen removal system contains an adsorbent to adsorb residual ammonia nitrogen in the landfill leachate.
2. The landfill leachate total discharge treatment system of claim 1, wherein: the multi-section special membrane separation system comprises a first-section special membrane separation system and a second-section special membrane separation system, a permeate liquid outlet of the first-section special membrane separation system is communicated with an inlet of the second-section special membrane separation system, and a concentrated liquid outlet of the second-section special membrane separation system is communicated with an inlet of the first-section special membrane separation system.
3. The landfill leachate total discharge treatment system of claim 2, wherein: and a concentrated solution outlet of the special membrane separation system at the first working section is communicated to a refuse landfill.
4. The landfill leachate total discharge treatment system of claim 2 or 3, wherein: the molecular weight cutoff of a membrane element adopted in a special membrane separation system at one section of the garbage leachate full-discharge treatment system is 2000-3000 daltons, and the molecular weight cutoff of a membrane element adopted in a special membrane separation system at the second section of the garbage leachate full-discharge treatment system is 300-500 daltons.
5. The landfill leachate total discharge treatment system of claim 1, wherein: the pre-filtering system is one or a combination of a plurality of medium filtering systems, organic micro-filtering systems and volcanic rock filtering systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022410212.0U CN214167513U (en) | 2020-10-27 | 2020-10-27 | Landfill leachate full-discharge treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022410212.0U CN214167513U (en) | 2020-10-27 | 2020-10-27 | Landfill leachate full-discharge treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214167513U true CN214167513U (en) | 2021-09-10 |
Family
ID=77597925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022410212.0U Active CN214167513U (en) | 2020-10-27 | 2020-10-27 | Landfill leachate full-discharge treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214167513U (en) |
-
2020
- 2020-10-27 CN CN202022410212.0U patent/CN214167513U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201817356U (en) | Coking wastewater advanced treatment and reuse device by using ozone, active carbon and double-membrane process | |
| CN201817357U (en) | Full-reuse treatment device for coking wastewater through Fenton oxidation and double-membrane process | |
| CN102718358B (en) | Sewage treatment method | |
| CN101088941A (en) | Technological process of treating papermaking effluent for reuse based on membrane integrating technique | |
| CN101898854A (en) | Method and device for treatment of high-sulfur content and low-permeability oil reservoir produced wastewater | |
| CN103626353A (en) | Method for processing city household garbage leachate | |
| CN109467285A (en) | A kind of sewage plant Tailwater Depth is handled to the system and method for III class water quality standard of earth's surface | |
| CN211141811U (en) | Landfill leachate's positive osmotic treatment system | |
| CN101643298A (en) | Organic wastewater treatment process containing membrane filtration element | |
| CN103739172B (en) | Water circulating and reusing method for industrial parks | |
| CN203833762U (en) | Landfill leachate treatment system | |
| CN202988914U (en) | Device for treatment of landfill leachate | |
| CN103387301B (en) | Deep purification method for urban sewage | |
| CN214167513U (en) | Landfill leachate full-discharge treatment system | |
| CN109179924B (en) | Method and system for cooperatively treating leachate and sludge pressure filtrate of waste incineration plant | |
| CN208617634U (en) | A kind of leachate in garbage transfer station processing system | |
| CN201313858Y (en) | Steel wastewater zero-drainage regeneration combining device | |
| CN208532521U (en) | A kind of garbage percolation liquid treating system | |
| Zhao et al. | Integrated coagulation-trickling filter–ultrafiltration processes for domestic wastewater treatment and reclamation | |
| CN213569636U (en) | Separation membrane device for nanofiltration concentrate reduction treatment | |
| CN214912987U (en) | Landfill leachate nanofiltration concentrate resourceful treatment system | |
| CN201380045Y (en) | Pretreatment device and reverse osmosis desalination apparatus for desalination of mine water | |
| CN212425797U (en) | Landfill leachate treatment device | |
| CN211871639U (en) | Treatment facility of landfill leachate | |
| CN112239282A (en) | Device and process for treating mine ammonia nitrogen wastewater by series parallel graded adsorption and reverse osmosis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A full discharge treatment system for landfill leachate Effective date of registration: 20211203 Granted publication date: 20210910 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: SUNUP ENVIRONMENTAL TECHNOLOGY CO.,LTD. Registration number: Y2021980014035 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220322 Granted publication date: 20210910 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: SUNUP ENVIRONMENTAL TECHNOLOGY CO.,LTD. Registration number: Y2021980014035 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A full discharge treatment system for landfill leachate Effective date of registration: 20220322 Granted publication date: 20210910 Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd. Pledgor: SUNUP ENVIRONMENTAL TECHNOLOGY CO.,LTD. Registration number: Y2022990000163 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230131 Granted publication date: 20210910 Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd. Pledgor: SUNUP ENVIRONMENTAL TECHNOLOGY CO.,LTD. Registration number: Y2022990000163 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |