CN108675513A - A kind of processing system and method for landfill leachate embrane method concentrate - Google Patents
A kind of processing system and method for landfill leachate embrane method concentrate Download PDFInfo
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- CN108675513A CN108675513A CN201810623506.6A CN201810623506A CN108675513A CN 108675513 A CN108675513 A CN 108675513A CN 201810623506 A CN201810623506 A CN 201810623506A CN 108675513 A CN108675513 A CN 108675513A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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Abstract
The invention discloses a kind of processing system and method for landfill leachate embrane method concentrate, system includes：Multistage coagulation air-float device, aerating oxidation device and electrocatalysis oxidation apparatus；Wherein, multistage coagulation air-float device is respectively equipped with nanofiltration concentrated water entrance, filtrate outlet and sludge outlet；The filtrate outlet of multistage coagulation air-float device is connect with aerating oxidation device and electrocatalysis oxidation apparatus successively；Aerating oxidation device is equipped with gas feed；Electrocatalysis oxidation apparatus is respectively equipped with reverse osmosis concentrated water water inlet pipe, water inlet, bleeding point and water outlet up to standard, and bleeding point is connect with the gas feed of aerating oxidation device；Reverse osmosis concentrated water water inlet pipe is connect with water inlet.The processing system is not only simple for process by the way that sequentially connected multistage coagulation air-float device, aerating oxidation device and electrocatalysis oxidation apparatus is arranged, and operating cost is relatively low, realizes the processing up to standard of film concentrated liquid.
Description
Technical field
The present invention relates to the processing systems and side of sewage treatment field more particularly to a kind of landfill leachate embrane method concentrate
Method.
Background technology
With the propulsion of Chinese Urbanization's construction, rubbish annual growth has reached 10% or more, generates nearly 1.8 hundred million tons every year
Municipal refuse.In China, since rubbish moisture content itself is just high, and the infiltration of rain, surface water and groundwater, cause rubbish
The yield of Leachate site is very big.
The water quality of landfill leachate is very complicated, typically contains high-enriched organics, heavy metal ion, high salinity, SS and ammonia
Nitrogen.Landfill leachate not only contaminated soil and earth surface water source, can also pollute underground water.The processing of Leachate site is still so far
Unusual stubborn problem in city refuse landfill design, operation and management.The processing of landfill leachate at present is mainly using life
Object edman degradation Edman+nanofiltration+reverse osmosis combination technique.The combined treatment process is the prevailing technology of China's garbage leachate processing, though
It has many good qualities, such as：Solve the problems, such as the advanced treating of contained a large amount of substances and toxicant difficult to degrade in Leachate site, water outlet
Effect is good, can reach the standard of GB16889-2008, and floor space is small.But accompanying problem is that producing 25% or so
Film concentrate.Enriched hardly degraded organic substance, inorganic salts and micro heavy in concentrate, traditional handicraft are difficult to locate
Reason.At the same time, existing membranous system water outlet and concentrate have been subjected to biochemical and MBR processing, and the BOD in water is almost nil, special
It is not concentrate, salinity is very high, can not be continuing with biochemical apparatus completely and be handled, although being continuing with other membranous systems is
Effective method, but same the problem of facing low producing water ratio and newly-increased concentrate again.
The main methods that rubbish factory rubbish percolation liquid membrane concentrate uses at present have：Reflux, is burned at evaporation drying
Deng.Embrane method concentrate is flowed back into refuse landfill, garbage storing hole or landfill leachate storage pool, long-term cycle can cause to be percolated
The enrichment of salt and organic matter in liquid is deteriorated so as to cause biochemical treatment system effect, increases the burden of embrane method system operation and takes
With.Evaporation drying is to be separated from water soluble solids in embrane method concentrate, and height, and energy consumption are required to evaporator corrosion resistance
Greatly, operating cost is higher.In addition, the partial organic substances in embrane method concentrate are volatile, evaporation process, which is dealt with improperly, easily causes two
Secondary pollution.Burning process energy consumption is larger, containing heavy metal, flying dust in the gas generated in addition, needs further vent gas treatment dress
It sets.As Chinese patent CN106348499A discloses the processing method that a kind of landfill leachate concentrates liquid, including：(1) rubbish is oozed
The electrocatalysis oxidation apparatus equipped with catalyst A is added in filtrate concentrate, carries out electrocatalytic oxidation, and 1~6h of reaction obtains treatment fluid
I；(2) pH value for the treatment of fluid I is adjusted to 10~11, oxidant is added, 10~60min, mistake are stood after oxidation-coagulation reaction
Filter, obtains treatment fluid II；(3) pH value for the treatment of fluid II is adjusted to 7~8, with mass space velocity for 0.5~3h-1Solid is flowed through to urge
Agent bed reactor, Chinese effluent can effectively remove COD, total nitrogen, coloration and the heavy metal ion in concentrate.But the party
The method that method applies electro-catalysis+coagulating sedimentation+wet oxidation, complex process, Wet Oxidation Process is complicated for operation, cost compared with
Height only exists in laboratory development phase at present, and industrial-scale application is not implemented.Chinese patent CN106242163B discloses one
The processing method of kind landfill leachate embrane method concentrate, landfill leachate embrane method concentrate pass through compound softening coagulating sedimentation successively
Pond, ozone oxidation reaction device, hydrolytic tank and the ponds anaerobism MBR, the water outlet of the ponds anaerobism MBR enter nanofiltration system；Nanofiltration system is handled
The permeate arrived direct emission or is discharged after pressure contact oxidation reactor for treatment after more medium filter filters；It receives
The concentrate that filter system is handled is mixed with landfill leachate, the concentrate obtained after biochemistry, MBR, embrane method concentration
It is re-circulated into compound softening coagulative precipitation tank and subsequent operation.This method is suitable for the place of landfill leachate film-filter concentration liquid
Reason, but the technique floor space is larger, and flow is complicated, and enriching pollutants are serious.
To sum up, inventor discovers how that it is urgent problem that rubbish percolation liquid membrane concentrated liquid, which can be effectively treated,.
Invention content
Based on the problems of prior art, the object of the present invention is to provide a kind of landfill leachate embrane method concentrates
Processing system and method keep the treatment effect of embrane method concentrate reliable and stable, have lower operating cost and higher removal
Efficiency, water outlet can realize qualified discharge.
The purpose of the present invention is what is be achieved through the following technical solutions：
Embodiment of the present invention provides a kind of processing system of landfill leachate embrane method concentrate, including：
Multistage coagulation air-float device, aerating oxidation device and electrocatalysis oxidation apparatus；Wherein,
The multistage coagulation air-float device is respectively equipped with nanofiltration concentrated water entrance, filtrate outlet and sludge outlet；
The filtrate outlet of the multistage coagulation air-float device is disguised with the aerating oxidation device and electrocatalytic oxidation successively
Set connection；
The aerating oxidation device is equipped with gas feed；
The electrocatalysis oxidation apparatus is respectively equipped with reverse osmosis concentrated water water inlet pipe, water inlet, bleeding point and water outlet up to standard,
The bleeding point is connect with the gas feed of the aerating oxidation device；The reverse osmosis concentrated water water inlet pipe connects with the water inlet
It connects.
Embodiment of the present invention also provides a kind of processing method of landfill leachate embrane method concentrate, and use is of the present invention
Landfill leachate embrane method concentrate processing system, include the following steps：
Coagulation air-float processing：Make handled nanofiltration concentrated water enter alkaline matter in multistage coagulation air-float device through addition,
Coagulant and flocculant reaction and air supporting reaction remove macromolecular organic pollution by flocculation sediment and microbubble air supporting
And coloration；
Aerating oxidation processing：Coagulation air-float treated water outlet enter aerating oxidation device in, with electrocatalysis oxidation apparatus
The gas of generation is reacted in aerating oxidation device, is aoxidized by oxidizing gas, and the organic matter in concentrated water is reduced；
Electrocatalytic oxidation processing：Water outlet and reverse osmosis concentrated water are directly entered electrocatalysis oxidation apparatus after aerating oxidation processing,
By electronics direct oxidation and by-product indirect oxidation under electro-catalysis in the electrocatalysis oxidation apparatus, water outlet reaches discharge mark
Standard outside water outlet up to standard by arranging.
As seen from the above technical solution provided by the invention, processing rubbish percolation liquid membrane provided in an embodiment of the present invention
The system and method for method concentrate, advantage are：
By the way that sequentially connected multistage coagulation air-float device, aerating oxidation device and electrocatalysis oxidation apparatus is arranged, not only
It is simple for process, and operating cost is relatively low, realizes the processing up to standard of film concentrated liquid；Due to using multistage coagulation air-float device,
It can remove macromolecular organic pollution and coloration by way of dosing coagulation, effectively reduce the load of subsequent processing, improve
The processing speed and economy of system；The gas generated by electrocatalysis oxidation apparatus is passed through aerating oxidation device, by gas
The oxidation of the gases such as chlorine reduces the content of organics in water, reduces the load of electrocatalysis oxidation apparatus, realize gas
Comprehensive utilization.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is that the processing system of landfill leachate embrane method concentrate provided in an embodiment of the present invention constitutes schematic diagram；
Fig. 2 is the front view of electrocatalysis oxidation apparatus provided in an embodiment of the present invention；
Fig. 3 is the vertical view of electrocatalysis oxidation apparatus provided in an embodiment of the present invention；
In figure：1- multistage coagulation air-float devices；2- aerating oxidation devices；3- electrocatalysis oxidation apparatus；31- anode plates；32-
Cathode plate；33- dosing mouths；34- water inlets；35- slag-drip openings；36- spray heads；37- bleeding points；38- water outlets up to standard；39- is cloudy
Pole；310- anodes；311- water outlets；A- nanofiltration concentrated water entrances；B- reverse osmosis concentrated water water inlet pipes；C- water outlets up to standard；D- filter residues
Outlet；E- gas feeds；F- bleeding points.
Specific implementation mode
With reference to the particular content of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
Belong to protection scope of the present invention.The content not being described in detail in the embodiment of the present invention belongs to professional and technical personnel in the field
The well known prior art.
As shown, the embodiment of the present invention provides a kind of processing system of landfill leachate embrane method concentrate, embrane method can be made
The treatment effect of concentrate is reliable and stable, has lower operating cost and higher removal efficiency, water outlet can be realized up to standard
Discharge, including：
Multistage coagulation air-float device, aerating oxidation device and electrocatalysis oxidation apparatus；Wherein,
The multistage coagulation air-float device is respectively equipped with nanofiltration concentrated water entrance, filtrate outlet and sludge outlet；
The filtrate outlet of the multistage coagulation air-float device is disguised with the aerating oxidation device and electrocatalytic oxidation successively
Set connection；
The aerating oxidation device is equipped with gas feed；
The electrocatalysis oxidation apparatus is respectively equipped with reverse osmosis concentrated water water inlet pipe, water inlet, bleeding point and water outlet up to standard,
The bleeding point is connect with the gas feed of the aerating oxidation device；The reverse osmosis concentrated water water inlet pipe connects with the water inlet
It connects.
As shown in Figure 2,3, in above-mentioned processing system, electrocatalysis oxidation apparatus includes：
Reactor body, anode plate component, cathode plate component, dosing mouth, reverse osmosis concentrated water water inlet pipe, water inlet, deslagging
Mouth, spray head assembly, bleeding point and water outlet up to standard；Wherein,
Dosing mouth, water inlet and slag-drip opening is respectively set in described reactor body one end, and bleeding point is respectively set in the other end
With water outlet up to standard；
The reverse osmosis concentrated water water inlet pipe is connect with the water inlet；
Anode plate component and cathode plate component, each anode of the anode plate component are respectively set in the reactor body
It is staggered to form structure water stream channel of turning back respectively with each cathode of the cathode plate component, the structure water stream channel of turning back
Front end inlet is connect with the water inlet and dosing mouth respectively, which reaches with described
Mark mouth of a river connection；The bottom of the structure flow reaction channel of turning back is exported equipped with multiple deslagginves, and the outlet of each deslagging is and institute
State slag-drip opening connection；
The spray head assembly is arranged in top in the reactor body, and the spray head assembly is in the anode plate
The top of component and cathode plate component.
In above-mentioned electrocatalysis oxidation apparatus, anode plate component is made of vertical spaced multiple anode plates side by side, institute
The quantity for stating anode plate is N, and N is equal to 15~50；
The cathode plate component is made of vertical spaced multiple cathode plates side by side, and the quantity of the cathode plate is N+
1, N is equal to 15~50；
Each anode plate of the anode plate component and each cathode plate of cathode plate component are relative to plugging into two neighboring anode
Plug the structure of a cathode plate between plate, form structure flow reaction channel of turning back in the structure, anode plate and cathode plate it
Between distance be 1~3cm.
In above-mentioned electrocatalysis oxidation apparatus, the anode plate of anode plate component is coated with porous nano catalysis material using two sides
Ti electrode, this anode plate is efficient；Cathode is stainless steel polar plate, and cost is relatively low.
The cathode of the cathode plate component uses stainless steel electrode.
In above-mentioned electrocatalysis oxidation apparatus, dosing mouth, water inlet and slag-drip opening be arranged in order from top to bottom be located at it is described anti-
The front end of device ontology, the dosing mouth is answered to be located at the intermediate position of the reactor body front end, the slag-drip opening is located at described
The bottom of reactor body front end, before reactor body of the water inlet between the dosing mouth and the slag-drip opening
On end；
The bleeding point and water outlet up to standard are located at the rear end of the reactor body, the bleeding point from top to bottom respectively
It is located at the top of the reactor body rear end, the water outlet up to standard is located at the bottom of the reactor body rear end.
In above-mentioned electrocatalysis oxidation apparatus, spray head assembly is made of multiple spray heads, and multiple spray heads, which are uniformly distributed, to be set
Top in the reactor body, in the anode plate component and cathode plate component top.
In above-mentioned electrocatalysis oxidation apparatus, anode plate component and the bottom of cathode plate component are divided into multiple reaction zones, more
A reaction zone is connect bottom in each reaction zone ontology with the slag-drip opening.Specifically, bottom and anode in reactor body
Setting is divided into the diaphragm plate of multistage between board group part and cathode plate component, and each diaphragm plate (can with an electrode plate above it
Can also be cathode plate to be anode plate) connection, above multistage diaphragm plate with the bottom of anode plate component and cathode plate component
Between be divided into multiple reaction zones, each reaction zone is respectively through the gap between the diaphragm plate of the reaction zone bottom two through under each diaphragm plate
The overall region of side is connected to slag-drip opening, and in the structure, pole plate (refers to the anode plate of anode assemblies and the cathode plate of cathode assembly)
Gap between diaphragm plate is less than 0.3CM, can ensure that handled sewage forms baffling movement between pole plate.This structure avoids
When being not separated into multiple reaction zones in reactor body bottom, handled concentrated water can in pole plate and reaction zone bottom
Rear end is flowed directly to from front end between gap, the structure flow reaction channel of turning back formed between yin, yang pole plate is not passed through, that is, does not have
There is the reaction of the baffling between pole plate and causes short stream.Preferably, multiple reaction zones are three, not only can guarantee reaction effect, but also
Structure can be simplified.It, can be with if size is big it is recognised that the quantity of reaction zone can be arranged according to reactor body lateral dimension
Greater number of reactor is set, and size is small, and small number of reactor can be arranged.
The catalytic oxidizing equipment of above structure, due to being internally provided with structure water stream channel of turning back, smaller size smaller it is ensured that
Reaction effect, take up an area it is smaller, integration is higher, and electrocatalysis oxidation apparatus does not need civil engineering substantially, saved soil at
This.
In above-mentioned processing system, multistage coagulation air-float device includes：Fourth-order reaction pond, reaction tanks at different levels are equipped with stirring dress
It sets；
In fourth-order reaction pond, first order order reaction pond is equipped with alkaline matter throwing device, and second level reaction tank is equipped with coagulation
Agent throwing device, third level reaction tank are equipped with polyacrylamide high polymer coagulant throwing device, and fourth stage reaction tank is air supporting
Pond.
In above-mentioned processing system, each device can be electrically connected with control device, realize remote control, improve automation journey
Degree, reduces manual control cost.
Referring to Fig. 1, the embodiment of the present invention also provides a kind of processing method of landfill leachate embrane method concentrate, and use is above-mentioned
Landfill leachate embrane method concentrate processing system, include the following steps：
Coagulation air-float processing：Make handled nanofiltration concentrated water enter alkaline matter in multistage coagulation air-float device through addition,
Coagulant and flocculant reaction and air supporting reaction remove macromolecular organic pollution by flocculation sediment and microbubble air supporting
And coloration；
Aerating oxidation processing：Coagulation air-float treated water outlet enter aerating oxidation device in, with electrocatalysis oxidation apparatus
The gas of generation is reacted in aerating oxidation device, is aoxidized by oxidizing gas, and the organic matter in concentrated water is reduced；
Electrocatalytic oxidation processing：Water outlet and reverse osmosis concentrated water are directly entered electrocatalysis oxidation apparatus after aerating oxidation processing,
By electronics direct oxidation and by-product indirect oxidation under electro-catalysis in the electrocatalysis oxidation apparatus, water outlet reaches discharge mark
Standard outside water outlet up to standard by arranging.
In the coagulation air-float processing of above-mentioned processing method, in the fourth-order reaction pond of multistage coagulation air-float device, first order grade
Reaction tank be equipped with alkaline matter throwing device, the alkaline matter added be liquid caustic soda or sodium carbonate, dosage be 100~
2000mg/L；Second level reaction tank is equipped with coagulant dosage device, and the coagulant added is aluminum sulfate, aluminium polychloride, gathers
Ferric sulfate, iron chloride one or several kinds polymer are closed, the dosage of coagulant is 100~2000mg/L；Third level reaction tank
Equipped with polyacrylamide high polymer coagulant throwing device, the dosage of the polyacrylamide high polymer coagulant added is 1
~15mg/L；
In the electrocatalytic oxidation processing, the current density of electrocatalysis oxidation apparatus is 10~20mA/cm2, hydraulic retention
Time control is in 10~40min；Dosing mouth through the electrocatalysis oxidation apparatus adds H2O2。
The concentrated water of concentrated water and counter-infiltration system of the concentrated water that the present invention is handled from nanofiltration system, landfill leachate is by pre-
Processing system, UASB anaerobic reactions system, AO reaction systems, MBR reaction systems, nanofiltration system, counter-infiltration system, reverse osmosis appear
Water can reach the requirement of the local discharge standard (DB11/307-2013) of Beijing, and nanofiltration concentrated water enters multistage coagulation air-float dress
Set, aerating oxidation device, electrocatalysis oxidation apparatus are handled successively, realize that the processing up to standard of concentrated water, reverse osmosis water outlet can be straight
It taps into electrocatalysis oxidation apparatus processing.The processing method of the rubbish percolation liquid membrane concentrate of the present invention, not only energy-saving safe is high
Effect, electrocatalysis oxidation apparatus can also obtain the oxidizing gas such as chlorine, it can be passed through to aerating oxidation device, realize sterilization drop
Solve organic matter.
The embodiment of the present invention is specifically described in further detail below.
The processing system of rubbish percolation liquid membrane concentrate provided in an embodiment of the present invention, primary structure is as shown in Figure 1, packet
It includes：Multistage coagulation air-float device 1, aerating oxidation device 2 and the electrocatalysis oxidation apparatus 3 being sequentially connected, multistage coagulation air-float dress
It sets, aerating oxidation device, electrocatalysis oxidation apparatus, the pumping of electrocatalysis oxidation apparatus and the gas feed phase of aerating oxidation device
Even.
The front view of electrocatalysis oxidation apparatus is as shown in Fig. 2, include：Reactor body, cathode plate 32, adds anode plate 31
Medicine mouth 33, water inlet 34, slag-drip opening 35, spray head assembly 36, bleeding point 37 and water outlet up to standard 38；Electrocatalysis oxidation apparatus
Vertical view is as shown in Figure 3, wherein cathode plate 32, anode plate 31, water outlet up to standard 38；Aerating oxidation device be discharged and it is reverse osmosis
Concentrated water enters electrocatalysis oxidation apparatus from water inlet 34, according to baffling mode shown in Fig. 3 flow successively through cathode plate and anode plate it
Between structure flow reaction channel of turning back, finally water outlet 38 up to standard flow out.The cathode plate 32 of electrocatalysis oxidation apparatus is not
Become rusty steel electrode, and the anode plate 31 is Ti electrode, and Ti electrode two sides is coated with porous nano catalysis material.The anode plate number is
The number of N (N=15~50), cathode plate are N+1；The distance between anode plate and cathode plate are 1~3cm.Anode plate and cathode
Plate is alternate intervals and is oppositely arranged that fluid flows in reactor body for baffling.
Further, the electrocatalysis oxidation apparatus inner top is equipped with equally distributed spray head assembly 35, spray head group
Part 35 is made of multiple spray heads, is used for the washing of yin, yang pole plate；Described device top is equipped with bleeding point 37, is used for electro-catalysis
The collection of the gas generated when oxidation reaction；Bottom is equipped with slag-drip opening 35, for the impurity solid generated in reaction, deslagging to be discharged
The structure of mouth 35 will react it and be divided into several reaction zones, prevent the generation of short stream.Described device water inlet upper end is equipped with dosing mouth
33, different amounts of H can be added2O2As oxidant, for improving reaction efficiency.
Above-mentioned processing system can realize that coagulation air-float adds the treatment process of aerating oxidation power-up catalysis oxidation, significantly drop
The low COD of waste water, while the generation of additional pollutant is avoided, and the gas that electrocatalysis oxidation apparatus generates is passed directly into exposure
Gas oxidation unit realizes the comprehensive utilization of gas.
The present invention rubbish percolation liquid membrane concentrate processing method, concentrated water of the handled concentrated water from nanofiltration system and
Counter-infiltration system concentrated water (landfill leachate pass through process flow be：Pretreatment system, UASB anaerobic reactions system, AO are anti-
Answer system, MBR reaction systems, nanofiltration system, counter-infiltration system), the specific processing step of concentrated water is as follows：
Step a, coagulation air-float processing：Coagulant is added in waste water, passes through the air supporting of flocculation sediment effect and microbubble
Effect removes macromolecular organic pollution and coloration；
Step b, aerating oxidation processing：Coagulation be discharged with electrocatalysis oxidation apparatus generate gas aerating oxidation device into
Row reaction, by the oxidation of oxidizing gas, the concentration of dense Organic substance in water further decreases；
Step c, electrocatalytic oxidation processing：Aerating oxidation is discharged and reverse osmosis concentrated water is directly entered electrocatalysis oxidation apparatus,
By the direct oxidation of electronics and the indirect oxidation effect of by-product, water outlet reaches discharge standard.
Preferably, in the coagulation air-float step a of the above method, flocculant flocculation is added, the flocculant used is polypropylene
One or more of amide, aluminium polychloride, bodied ferric sulfate, polymeric aluminum sulfate iron, dosage be 100~2000mg/L it
Between, for the technique used for shallow-layer ion air-float technology, bubble diameter is 1um or so.
Preferably, in the aerating oxidation step b of the above method, the gases such as external ozone, chlorine can also be added in gas.
Preferably, in the electrocatalytic oxidation step c of the above method, oxidant, oxygen can be added in electrocatalysis oxidation reaction
Agent is hydrogen peroxide, and the quality that adds of oxidant is 50~500mg/L.
Embodiment 1
The present embodiment provides the processing method of rubbish percolation liquid membrane concentrate, processing system using the present invention, including with
Lower step：
Certain rubbish factory percolate nanofiltration concentrated water, pH=7.51, COD content 3462mg/L, ammonia-nitrogen content 19.8mg/L, conductance
Rate 21 × 103Us/cm, SS content 7.2mg/L, hardness 7800mg/L：
(a) coagulation air-float is handled：Nanofiltration system concentrated water is passed through the coagulating basin of multistage coagulation air-float, and 200mg/L liquid caustic soda is added,
The bodied ferric sulfate of 1000mg/L is added, the polyacrylamide of 10mg/L is acted on by flocculation sediment, removes the organic dirt of macromolecular
Object and coloration are contaminated, flotation tank is shallow-layer ion air supporting, and Air Bubble Size is 1um or so, and coagulation air-float is discharged pH=8.8, COD contents
1500mg/L, ammonia-nitrogen content 15mg/L, conductivity 20 × 103Us/cm, SS content 11mg/L, hardness 5500mg/L；
(b) aerating oxidation is handled：Coagulation is discharged the gas generated with electrocatalysis oxidation apparatus and is carried out in aerating oxidation device
Reaction, the concentration of dense Organic substance in water further decreases, pH=7.0, COD content 986mg/L, ammonia-nitrogen content 13mg/L, conductance
Rate 21 × 103Us/cm, SS content 10mg/L, hardness 4890mg/L；
(c) electrocatalytic oxidation is handled：Aerating oxidation device, which is discharged, enters electrocatalysis oxidation apparatus, in electrocatalysis oxidation apparatus
Current density is 20mA/cm2, and residence time control is 2cm in 30min, cathode and anode plate spacing, and hydrogen peroxide dosage is
200mg/L is discharged pH=6.9, COD content 26mg/L, ammonia-nitrogen content 1mg/L, conductivity 18 × 103Us/cm, SS content 3mg/
L, hardness 1850mg/L.
Embodiment 2
The present embodiment provides the processing method of rubbish percolation liquid membrane concentrate, processing system using the present invention, including with
Lower step：
Certain rubbish factory percolate reverse osmosis concentrated water stoste, pH=7.47, COD content 120mg/L, ammonia-nitrogen content 3mg/L, electricity
Conductance 30 × 103Us/cm, SS content 8mg/L, hardness 1460mg/L；
(1) electrocatalytic oxidation is handled：Reverse osmosis concentrated water is directly entered electrocatalysis oxidation apparatus, electricity in electrocatalysis oxidation apparatus
Current density is 20mA/cm2, and residence time control is in 40min, and for cathode and anode plate spacing in 2cm, hydrogen peroxide dosage is 100mg/
L is discharged pH=6.9, COD content 20mg/L, ammonia-nitrogen content 2mg/L, conductivity 21 × 103Us/cm, SS content 5mg/L, hardness
1150mg/L。
Embodiment 3
The present embodiment provides the processing method of rubbish percolation liquid membrane concentrate, processing system using the present invention, including with
Lower step：
Certain rubbish factory percolate nanofiltration concentrated water, pH=7.1, COD content 4568mg/L, ammonia-nitrogen content 18mg/L, conductivity
20×103Us/cm, SS content 12mg/L, hardness 6800mg/L：
(a) coagulation air-float is handled：Nanofiltration system concentrated water is passed through the coagulating basin of multistage coagulation air-float device, and 200mg/L is added
The bodied ferric sulfate of 2000mg/L is added in liquid caustic soda, and the polyacrylamide of 10mg/L is acted on by flocculation sediment, removes macromolecular
Organic pollution and coloration, flotation tank are shallow-layer ion air supporting, and Air Bubble Size is 1um or so, and coagulation air-float is discharged pH=8.6,
COD content 1680mg/L, ammonia-nitrogen content 14mg/L, conductivity 21 × 103Us/cm, SS content 10mg/L, hardness 4900mg/L；
(b) aerating oxidation is handled：Coagulation is discharged the gas generated with electrocatalysis oxidation apparatus and is carried out in aerating oxidation device
Reaction, the concentration of dense Organic substance in water further decreases, pH=7.3, COD content 1258mg/L, ammonia-nitrogen content 11mg/L, conductance
Rate 20 × 103Us/cm, SS content 10mg/L, hardness 4500mg/L；
(c) electrocatalytic oxidation is handled：Aerating oxidation device, which is discharged, enters electrocatalysis oxidation apparatus, in electrocatalysis oxidation apparatus
Current density is 20mA/cm2, and the residence time controls in 50min, and cathode and anode plate spacing is in 2cm, hydrogen peroxide dosage
200mg/L is discharged pH=7.1, COD content 29mg/L, ammonia-nitrogen content 1mg/L, conductivity 18 × 103Us/cm, SS content 5mg/
L, hardness 3850mg/L.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of processing system of landfill leachate embrane method concentrate, which is characterized in that including：
Multistage coagulation air-float device, aerating oxidation device and electrocatalysis oxidation apparatus；Wherein,
The multistage coagulation air-float device is respectively equipped with nanofiltration concentrated water entrance, filtrate outlet and sludge outlet；
The filtrate outlet of the multistage coagulation air-float device connects with the aerating oxidation device and electrocatalysis oxidation apparatus successively
It connects；
The aerating oxidation device is equipped with gas feed；
The electrocatalysis oxidation apparatus is respectively equipped with reverse osmosis concentrated water water inlet pipe, water inlet, bleeding point and water outlet up to standard, described
Bleeding point is connect with the gas feed of the aerating oxidation device；The reverse osmosis concentrated water water inlet pipe is connect with the water inlet.
2. a kind of processing system of landfill leachate embrane method concentrate according to claim 1, which is characterized in that the electricity
Catalytic oxidizing equipment includes：
Reactor body, anode plate component, cathode plate component, dosing mouth, reverse osmosis concentrated water water inlet pipe, water inlet, slag-drip opening, spray
Drench head assembly, bleeding point and water outlet up to standard；Wherein,
Dosing mouth, water inlet and slag-drip opening is respectively set in described reactor body one end, and the other end is respectively set bleeding point and reaches
Mark the mouth of a river；
The reverse osmosis concentrated water water inlet pipe is connect with the water inlet；
Anode plate component and cathode plate component, each anode of the anode plate component and institute are respectively set in the reactor body
Each cathode for stating cathode plate component is staggered to form structure water stream channel of turning back respectively, the front end of the structure water stream channel of turning back
Entrance is connect with the water inlet and dosing mouth respectively, the back outlet of the structure flow reaction channel of turning back with it is described it is up to standard go out
The mouth of a river connects；The bottom of the structure flow reaction channel of turning back is exported equipped with multiple deslagginves, the outlet of each deslagging with the row
Cinder notch connects；
The spray head assembly is arranged in top in the reactor body, and the spray head assembly is in the anode plate component
With the top of cathode plate component.
3. a kind of processing system of landfill leachate embrane method concentrate according to claim 2, which is characterized in that the sun
Pole plate component is made of vertical spaced multiple anode plates side by side, and the quantity of the anode plate is N, and N is equal to 15~50；
The cathode plate component is made of vertical spaced multiple cathode plates side by side, and the quantity of the cathode plate is N+1, N
Equal to 15~50；
Each anode plate of the anode plate component and each cathode plate of cathode plate component relative to plug into two neighboring cathode plate it
Between plug the structure of an anode plate, structure flow reaction channel of turning back is formed in the structure, between anode plate and cathode plate
Distance is 1~3cm.
4. a kind of processing system of landfill leachate embrane method concentrate according to claim 2 or 3, which is characterized in that institute
The anode plate for stating anode plate component is coated with the Ti electrode of porous nano catalysis material using two sides；
The cathode of the cathode plate component uses stainless steel electrode.
5. a kind of processing system of landfill leachate embrane method concentrate according to claim 2, which is characterized in that described to add
Medicine mouth, water inlet and slag-drip opening are arranged in order the front end for being located at the reactor body from top to bottom, and the dosing mouth is located at institute
The intermediate position of reactor body front end is stated, the slag-drip opening is located at the bottom of the reactor body front end, the water inlet
On the front end of reactor body between the dosing mouth and the slag-drip opening；
The bleeding point and water outlet up to standard are located at the rear end of the reactor body from top to bottom respectively, and the bleeding point is located at
The top of the reactor body rear end, the water outlet up to standard are located at the bottom of the reactor body rear end.
6. a kind of processing system of landfill leachate embrane method concentrate according to claim 2, which is characterized in that the spray
Leaching head assembly is made of multiple spray heads, and multiple spray heads are uniformly distributed the top being located in the reactor body, is in institute
State anode plate component and cathode plate component top.
7. a kind of processing system of landfill leachate embrane method concentrate according to claim 2, which is characterized in that the sun
Pole plate component and the bottom of cathode plate component are divided into multiple reaction zones, multiple reaction zones bottom and institute in each reaction zone ontology
State slag-drip opening connection.
8. a kind of processing system of landfill leachate embrane method concentrate according to any one of claims 1 to 3, feature exist
In the multistage coagulation air-float device includes：Fourth-order reaction pond, reaction tanks at different levels are equipped with agitating device；
In fourth-order reaction pond, first order order reaction pond is equipped with alkaline matter throwing device, and second level reaction tank is thrown equipped with coagulant
Feeder apparatus, third level reaction tank are equipped with polyacrylamide high polymer coagulant throwing device, and fourth stage reaction tank is flotation tank.
9. a kind of processing method of landfill leachate embrane method concentrate, which is characterized in that using any one of claim 1 to 8 institute
The processing system for the landfill leachate embrane method concentrate stated, includes the following steps：
Coagulation air-float processing：Handled nanofiltration concentrated water is set to enter alkaline matter, coagulation through addition in multistage coagulation air-float device
Agent and flocculant reaction and air supporting reaction remove macromolecular organic pollution and color by flocculation sediment and microbubble air supporting
Degree；
Aerating oxidation processing：Coagulation air-float treated water outlet enter aerating oxidation device in, with electrocatalysis oxidation apparatus generate
Gas reacted in aerating oxidation device, aoxidized by oxidizing gas, reduce concentrated water in organic matter；
Electrocatalytic oxidation processing：Water outlet and reverse osmosis concentrated water are directly entered electrocatalysis oxidation apparatus after aerating oxidation processing, in institute
State in electrocatalysis oxidation apparatus by electronics direct oxidation and by-product indirect oxidation under electro-catalysis, water outlet reach discharge standard by
It is arranged outside water outlet up to standard.
10. a kind of processing method of landfill leachate embrane method concentrate according to claim 9, which is characterized in that
In the coagulation air-float processing of the method, in the fourth-order reaction pond of multistage coagulation air-float device, first order order reaction pond is set
There is alkaline matter throwing device, the alkaline matter added is liquid caustic soda or sodium carbonate, and dosage is 100~2000mg/L；Second
Order reaction pond is equipped with coagulant dosage device, and the coagulant added is aluminum sulfate, aluminium polychloride, bodied ferric sulfate, chlorination
The dosage of iron one or several kinds polymer, coagulant is 100~2000mg/L；Third level reaction tank is equipped with polyacrylamide
The dosage of high polymer coagulant throwing device, the polyacrylamide high polymer coagulant added is 1~15mg/L；
In the electrocatalytic oxidation processing of the method, the current density of electrocatalysis oxidation apparatus is 10~20mA/cm2, hydraulic retention
Time control is in 10~40min；Dosing mouth through the electrocatalysis oxidation apparatus adds oxidant, and the quality that adds of oxidant is
50~500mg/L.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626676A (en) * | 2019-02-15 | 2019-04-16 | 北京今大禹环境技术股份有限公司 | A method of reverse osmosis concentrated organic pollutants are handled using microwave-electro-catalysis group technology |
| CN109928476A (en) * | 2019-04-26 | 2019-06-25 | 中创水务科技环保(广东)有限公司 | A kind of landfill leachate pretreatment system and its technique |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1330934C (en) * | 1987-03-24 | 1994-07-26 | Masayuki Kurematsu | Apparatus for treating photographic process waste liquor through concentration by evaporation |
| CN103612643A (en) * | 2013-11-15 | 2014-03-05 | 山东华腾环保科技有限公司 | Train washing water treatment and reuse method and device |
| CN105016541A (en) * | 2015-07-29 | 2015-11-04 | 凯姆德（北京）能源环境科技有限公司 | Method for separating and recovering salts from high-salt wastewater |
| CN205099522U (en) * | 2015-11-03 | 2016-03-23 | 湖南永清环保研究院有限责任公司 | A device that is used for three -dimensional electrode light electro -fenton method to handle difficult degradation organic waste water |
| CN106277591A (en) * | 2016-08-26 | 2017-01-04 | 江苏维尔利环保科技股份有限公司 | Percolate nanofiltration concentrated solution processing method |
| CN106348499A (en) * | 2016-10-26 | 2017-01-25 | 浙江奇彩环境科技股份有限公司 | Treatment method of garbage leachate concentrated solution |
-
2018
- 2018-06-15 CN CN201810623506.6A patent/CN108675513A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1330934C (en) * | 1987-03-24 | 1994-07-26 | Masayuki Kurematsu | Apparatus for treating photographic process waste liquor through concentration by evaporation |
| CN103612643A (en) * | 2013-11-15 | 2014-03-05 | 山东华腾环保科技有限公司 | Train washing water treatment and reuse method and device |
| CN105016541A (en) * | 2015-07-29 | 2015-11-04 | 凯姆德（北京）能源环境科技有限公司 | Method for separating and recovering salts from high-salt wastewater |
| CN205099522U (en) * | 2015-11-03 | 2016-03-23 | 湖南永清环保研究院有限责任公司 | A device that is used for three -dimensional electrode light electro -fenton method to handle difficult degradation organic waste water |
| CN106277591A (en) * | 2016-08-26 | 2017-01-04 | 江苏维尔利环保科技股份有限公司 | Percolate nanofiltration concentrated solution processing method |
| CN106348499A (en) * | 2016-10-26 | 2017-01-25 | 浙江奇彩环境科技股份有限公司 | Treatment method of garbage leachate concentrated solution |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626676A (en) * | 2019-02-15 | 2019-04-16 | 北京今大禹环境技术股份有限公司 | A method of reverse osmosis concentrated organic pollutants are handled using microwave-electro-catalysis group technology |
| CN109928476A (en) * | 2019-04-26 | 2019-06-25 | 中创水务科技环保(广东)有限公司 | A kind of landfill leachate pretreatment system and its technique |
| CN110255786A (en) * | 2019-07-13 | 2019-09-20 | 杭州胜于蓝环保科技有限公司 | A kind of processing system of bio-chemical effluent and processing method with the system |
| CN110642438A (en) * | 2019-10-23 | 2020-01-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Cold rolling emulsion-containing wastewater treatment method and system |
| CN110642438B (en) * | 2019-10-23 | 2022-03-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Cold rolling emulsion-containing wastewater treatment method and system |
| CN111320316A (en) * | 2020-03-13 | 2020-06-23 | 北京洁绿环境科技股份有限公司 | Landfill leachate membrane concentrated solution treatment method |
| CN112723651A (en) * | 2020-11-25 | 2021-04-30 | 浙江海拓环境技术有限公司 | Porphyra processing wastewater treatment facility and method capable of realizing ultra-clean discharge |
| CN113277668A (en) * | 2021-06-18 | 2021-08-20 | 海南合和环境科技有限公司 | Integrated electrocatalysis wastewater hardness removal zero-discharge process |
| CN114314956A (en) * | 2021-12-24 | 2022-04-12 | 江苏坤奕环境技术股份有限公司 | Treatment system and treatment method for membrane concentrated solution of landfill leachate |
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