CN207361963U - The special equipment of landfill leachate reverse osmosis concentration liquor treating process - Google Patents
The special equipment of landfill leachate reverse osmosis concentration liquor treating process Download PDFInfo
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- CN207361963U CN207361963U CN201721241777.2U CN201721241777U CN207361963U CN 207361963 U CN207361963 U CN 207361963U CN 201721241777 U CN201721241777 U CN 201721241777U CN 207361963 U CN207361963 U CN 207361963U
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- reverse osmosis
- landfill leachate
- special equipment
- treating process
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of special equipment of landfill leachate reverse osmosis concentration liquor treating process, landfill leachate reverse osmosis concentrated liquid is mainly carried out to the process of coagulating sedimentation, electrolytic oxidation, adsorption bleaching, evaporative crystallization, finally obtain crystal salt, recoverable.The utility model can effectively reduce the pollution of organic matter in concentrate, can guarantee that the continual and steady operation of vapo(u)rization system, and can realize the zero-emission of reverse osmosis concentrated liquid, have preferable environmental benefit and economic benefit.
Description
Technical field
The utility model belongs to technical field of waste water processing, is exactly specifically to be related at landfill leachate reverse osmosis concentrated liquid
The special equipment of science and engineering skill.
Background technology
Landfill leachate is a kind of organic wastewater with difficult degradation thereby, generally use at present " pretreatment+biological treatment+nanofiltration (NF)+
Reverse osmosis (RO) " group technologies.Wherein, reverse osmosis process section can produce substantial amounts of concentrate, and environment is polluted, therefore need
Reverse osmosis concentrated liquid is effectively treated.
Contain substantial amounts of salinity, bio-refractory organic matter in reverse osmosis concentrated liquid.If handled for a long time using recharge method,
Landfill leachate salinity and other pollutants can be caused constantly to accumulate, biochemical system and membranous system are impacted, ultimately resulted in
Effluent quality is exceeded., can be to activity since hardly degraded organic substance concentration is high in concentrate if being transported to municipal sewage plant outside
Sludge system produces Organic loading shock, and it is exceeded to even result in sewage disposal plant effluent.
The pollutant in water is cured using evaporation treatment process processing reverse osmosis concentration liquid energy, is avoided that Concentrated liquid recharge
And adversely affect, but contain substantial amounts of calcium, magnesium plasma and bicarbonate ion in landfill leachate reverse osmosis concentrated liquid,
Hardness and basicity are higher, and hardness ions and basicity ions binding can generate a large amount of calcium bicarbonates and magnesium bicarbonate, both are evaporating
Calcium carbonate and magnesium carbonate can be decomposed into being heated in device, so that fouling, reduces treatment effeciency, while will also result in security risk,
Therefore need to carry out sofening treatment to concentrate.
In addition, contain large amount of organic in landfill leachate reverse osmosis concentrated liquid, wherein, partial organic substances colourity is higher,
Organic matter constantly concentrates in evaporation process, causes viscosity of sludge denseness to increase, and influences salinity crystallization, is unfavorable for evaporation process
Stable operation, and colourity influence colourity can influence the whiteness of crystal salt, so as to influence the quality of crystal salt, therefore need to concentration
Organic matter in liquid is handled.
Utility model content
A kind of technological deficiency of the purpose of this utility model aiming at the above-mentioned prior art, there is provided landfill leachate reverse osmosis
The special equipment of concentration liquor treating process thoroughly, by hardness ionses such as the calcium in coagulating sedimentation removal waste water, magnesium, then passes through electricity
Solution oxidizing process removes hardly degraded organic substance in water removal, then removes the colourity of waste water using the method for absorption adsorption bleaching again, finally
Crystallization is evaporated, obtained sodium salt and sylvite recoverable, realize the zero-emission of landfill leachate reverse osmosis concentrated liquid,
Solve the outlet problem of concentrate, and there is preferable economic benefit.
Technical solution
In order to realize above-mentioned technical purpose, the landfill leachate reverse osmosis concentration liquor treating process of the utility model design
Special equipment, it is characterised in that：It includes precipitation reactor, oxidation reactor, adsorption tanks, evaporative crystallization unit.
The raw water box is connected with precipitation reactor, and intake pump is housed on connecting line；The clear liquid output of precipitation reactor
End connection oxidation reactor, precipitation output terminal connection sludge treating system；The output terminal connection adsorption tanks of oxidation reactor, absorption
The output terminal connection evaporative crystallization unit of tank, the output terminal connection crystal salt retracting device of evaporative crystallization unit.
Further, mixer and more medium filter are equipped with the precipitation reactor.
Further, active carbon layer is equipped with the adsorption tanks.
Further, evaporator, crystallizer, separator are equipped with the evaporative crystallization unit.
Beneficial effect
A kind of special equipment of landfill leachate reverse osmosis concentration liquor treating process of the utility model design, passes through first
The hardness ionses such as calcium, magnesium in coagulating sedimentation removal waste water, then remove hardly degraded organic substance in water removal, so by electrolytic oxidation
Colourity remaining in water removal is gone using the method for absorption adsorption bleaching again afterwards, is finally evaporated crystallization, obtained sodium salt and potassium
Salt recoverable.The utility model has carried out coagulating sedimentation, electrolytic oxidation, adsorption bleaching processing before evaporative crystallization, reduces
The influence of fouling and organic matter, colourity to evaporation and crystal process, improves the quality of crystal salt, it is anti-to realize landfill leachate
The zero-emission of osmosis concentration liquid, and achieve certain economic benefit.
Brief description of the drawings
Attached drawing 1 is the process flow chart of the utility model embodiment.
Attached drawing 2 is the special equipment connection relationship diagram of the utility model embodiment.
Embodiment
With reference to the accompanying drawings and examples, elaborate to the utility model.
Embodiment
As shown in Figure 2, the special equipment of landfill leachate reverse osmosis concentration liquor treating process, it is anti-that it mainly includes precipitation
Answer device 1, oxidation reactor 2, adsorption tanks 3, evaporative crystallization unit 4.
The raw water box 5 is connected with precipitation reactor 1, and intake pump 6 is housed on connecting line；The clear liquid of precipitation reactor 1
Output terminal connects oxidation reactor 2, precipitation output terminal connection sludge treating system 7；The output terminal connection absorption of oxidation reactor 2
Tank 3, the output terminal connection evaporative crystallization unit 4 of adsorption tanks 3, the output terminal connection crystal salt retracting device of evaporative crystallization unit 4
10。
Mixer 8 and more medium filter are equipped with the precipitation reactor 1.
Active carbon layer 9 is equipped with the adsorption tanks 3.
Evaporator, crystallizer, separator are equipped with the evaporative crystallization unit 4.
As shown in Figure 1, using above device carry out landfill leachate reverse osmosis concentrated liquid processing technique, it include with
Under several steps：
The first step：Landfill leachate reverse osmosis concentrated liquid is pumped into coagulating sedimentation system, adds carbonic acid into system first
Sodium, adjusts the pH value of waste water between 8~11, makes calcium and magnesium plasma generation precipitation therein, then adds flocculant and is sunk
Form sediment, finally precipitation enters sludge treating system with sludge form after multi-medium filtering.
Second step：Precipitation water outlet in the first step enters electrolytic oxidation process system, substantial amounts of in water under normal temperature condition
Cl-Cl is formed in anode ejected electron2, ClO is further formed in the solution-, so that by reducing substanceses such as the COD in waste water
Aoxidized.
3rd step：Oxidation water outlet in second step enters adsorption bleaching system, has good dispersiveness using activated carbon
Feature, under normal temperature condition, when waste water passes through activated carbon adsorption layer, the substance that show color in waste water is adsorbed by activated carbon surface, from
And make waste water adsorbing and discoloring.
4th step：After adsorption bleaching water outlet in 3rd step enters evaporation and crystallization system, forced circulation thermal evaporation is carried out, is made
Salinity in feed liquid reaches saturation state, then carries out crystallisation by cooling, finally obtains sodium salt and sylvite, wherein, in evaporation process
The condensed water of generation carries out reuse, and the mother liquor of generation is back to coagulating sedimentation system and carries out circular treatment.
Claims (4)
1. the special equipment of landfill leachate reverse osmosis concentration liquor treating process, it is characterised in that：It includes precipitation reactor
(1), oxidation reactor (2), adsorption tanks (3), evaporative crystallization unit (4)；
Raw water box (5) is connected with precipitation reactor (1), and intake pump (6) is housed on connecting line；The clear liquid of precipitation reactor (1)
Output terminal connection oxidation reactor (2), precipitation output terminal connection sludge treating system (7)；The output terminal of oxidation reactor (2) connects
Connect adsorption tanks (3), the output terminal connection evaporative crystallization unit (4) of adsorption tanks (3), the output terminal connection of evaporative crystallization unit (4)
Crystal salt retracting device (10).
2. the special equipment of landfill leachate reverse osmosis concentration liquor treating process as claimed in claim 1, it is characterised in that：Institute
State and mixer (8) and more medium filter are equipped with precipitation reactor (1).
3. the special equipment of landfill leachate reverse osmosis concentration liquor treating process as claimed in claim 1, it is characterised in that：Institute
State and active carbon layer (9) is equipped with adsorption tanks (3).
4. the special equipment of landfill leachate reverse osmosis concentration liquor treating process as claimed in claim 1, it is characterised in that：Institute
State and evaporator, crystallizer, separator are equipped with evaporative crystallization unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721241777.2U CN207361963U (en) | 2017-09-26 | 2017-09-26 | The special equipment of landfill leachate reverse osmosis concentration liquor treating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721241777.2U CN207361963U (en) | 2017-09-26 | 2017-09-26 | The special equipment of landfill leachate reverse osmosis concentration liquor treating process |
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|---|---|
| CN207361963U true CN207361963U (en) | 2018-05-15 |
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| CN201721241777.2U Active CN207361963U (en) | 2017-09-26 | 2017-09-26 | The special equipment of landfill leachate reverse osmosis concentration liquor treating process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827291A (en) * | 2017-09-26 | 2018-03-23 | 上海晶宇环境工程股份有限公司 | Percolate reverse osmosis concentration liquor treating process and special equipment |
| CN109354292A (en) * | 2018-12-14 | 2019-02-19 | 湖南军信环保股份有限公司 | A kind of minimizing treatment process of landfill leachate film-filter concentration liquid |
| CN115259515A (en) * | 2022-07-26 | 2022-11-01 | 中海石油环保服务（天津）有限公司 | High-concentration waste liquid treatment system and treatment method |
-
2017
- 2017-09-26 CN CN201721241777.2U patent/CN207361963U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827291A (en) * | 2017-09-26 | 2018-03-23 | 上海晶宇环境工程股份有限公司 | Percolate reverse osmosis concentration liquor treating process and special equipment |
| CN109354292A (en) * | 2018-12-14 | 2019-02-19 | 湖南军信环保股份有限公司 | A kind of minimizing treatment process of landfill leachate film-filter concentration liquid |
| CN109354292B (en) * | 2018-12-14 | 2021-11-19 | 湖南军信环保股份有限公司 | Reduction treatment process for landfill leachate membrane filtration concentrated solution |
| CN115259515A (en) * | 2022-07-26 | 2022-11-01 | 中海石油环保服务（天津）有限公司 | High-concentration waste liquid treatment system and treatment method |
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