CN106946342A - A kind of processing method of rubbish percolation liquid membrane concentrate - Google Patents
A kind of processing method of rubbish percolation liquid membrane concentrate Download PDFInfo
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- CN106946342A CN106946342A CN201710271437.2A CN201710271437A CN106946342A CN 106946342 A CN106946342 A CN 106946342A CN 201710271437 A CN201710271437 A CN 201710271437A CN 106946342 A CN106946342 A CN 106946342A
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- activated carbon
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/106—Carbonaceous materials
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Microbiology (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
The present invention relates to a kind of processing method of rubbish percolation liquid membrane concentrate.The step of this method, is as follows：1st, film concentrate is pumped into the bottom water inlet of primary adsorption bed with certain flow, and second order activity charcoal adsorbent bed is spilled over to after charcoal absorption.2nd, the film concentrate that primary adsorption bed overflows enters second order activity charcoal adsorbent bed naturally, through being filtered under second order activity charcoal adsorbent bed.3rd, secondary absorption bed absorption after go out stream film concentrate be pumped into biofilter and meanwhile be filled with air progress aeration seethe and enter sedimentation basin.4th, precipitated through sedimentation basin, water outlet after the suspension precipitation of entrainment is reached into professional standard emission request by precipitation process.The raw material of I and II adsorbent bed activated carbon and bio-filter stuffing of the present invention utilize the excess sludge of the wastewater treatment process of corresponding industry, with low cost, work well, realize the target of " treatment of wastes with processes of wastes against one another ", be prevented effectively from secondary pollution.
Description
Technical field
The present invention relates to a kind of processing method of rubbish percolation liquid membrane concentrate.
Technical background
The percolate produced in application of city life garbage disposal process is a kind of high concentration, the organic wastewater of difficult degradation,
Environmental pollution is extremely serious.In order to ensure that percolate water outlet can be stably reached《Household refuse landfill sites Environmental capacity
Standard》(GB16889-2008) requirement of " existing and newly-built household refuse landfill sites water pollution concentration of emission limit value " in, now
Landfill leachate treatment be widely used " MBR+NF/RO " membrane technology technique.
Film process is that pollutant is trapped in into side using the micro porous filtration of film, and the pollutant being trapped is together with effluent part
As concentration is high, intractable film concentrate, and volume is about the 20%-40% of before processing percolate.The master of film concentrate
It is humic acid material to want composition, and biodegradability is poor, and the comparision contents of inorganic salts and heavy metal are high, are current percolates
The a great problem urgently broken through in processing engineering.At present, the processing method of film concentrate mainly has recharge, thermal evaporation, burning, height
Level oxidation etc..Wherein, the removal pollutant that recharge method can not be truly；Thermal evaporation and the energy consumption burned are very big and right
Equipment requirement is higher；Advanced oxidation processes can reduce difficult degradation COD in concentrate to a certain extent, but the oxidant cost of consumption
It is expensive.In a word, a kind of method efficiently, economic is lacked for the processing of film concentrate at present.
The content of the invention
Present invention aims at providing a kind of rubbish percolation liquid membrane efficiently, economic to concentrate liquid processing method, this method is adopted
With " adsorbent bed+biofilter " group technology of source primary sludge matrix activated carbon, realize to film concentrate COD, NH4+-N, TP, TN
Efficient process, outlet effect meet《Household refuse landfill sites Environmental capacity standard》(GB16889-2008) emission limit will
Ask.
" adsorbent bed " and " biofilter " in the present invention refers to absorption bed technique and biofilter technology in water process,
Its filling adsorption material or filtrate are refered in particular to as the source primary sludge matrix activated carbon prepared by the above method and step in the present invention.
Processing method belonging to the present invention has the step as follows：
1st, the film concentrate of percolate is pumped into equipped with activated carbon made from source of sorbent primary sludge with certain flow
Primary adsorption bed bottom water inlet, through the primary activity charcoal adsorbent bed regular hour adsorb after by adsorbent bed top water outlet
Mouth is spilled over to second order activity charcoal adsorbent bed.
Described source primary sludge refers to the excess sludge of the generation of percolate biochemical treatment process.
Described source primary sludge matrix activated carbon refers to utilize the percolate biochemical treatment process for producing film concentrate
Excess sludge is as raw material, the activated carbon prepared under the conditions of high temperature, anoxybiotic etc..Its preparation method is as follows with step：
(1) percolate biochemical treatment excess sludge is air-dried under field conditions (factors), is then placed baking oven and is gone in 105 DEG C of bakings
Moisture, until taking out cooling after constant weight, removes the debris such as stone cleaning, and with crusher in crushing to 4-8mm, 200 mesh sieves are crossed after grinding.
(2) the raw sludge dry powder for crossing 200 mesh sieves is immersed in 8-24h in 1-3mol/L KOH, filtered filtration residue is put
Enter baking oven and remove moisture in 105 DEG C of bakings, until taking out cooling after constant weight.
By material (2) insert in atmosphere Muffle furnace be pyrolyzed, be passed through 100-200mL/min nitrogen 15min, after with 10-
20 DEG C/min programming rate is heated to 400-600 DEG C, stops after 2-3h, stops heating and is cooled to 80 DEG C of dischargings, is placed on dry
Cooled down in dry device.
(4) product (3) is embathed into 5min with 1M hydrochloric acid.
(5) hydrochloric acid (4) is filtered off, solid content soaked with deionized water and filtered after 20min, deionized water immersion is walked with filtering
It is rapid to repeat 5 times, until filtrate pH is 7-8.The upper thing of filter is put into baking oven in 105 DEG C of drying to constant weight again, the final rubbish that obtains oozes
The source primary sludge matrix activated carbon of filtrate.
Described certain flow is that hydraulic load is 8-10m in maintenance primary adsorption bed3/m2.h it is interior with secondary absorption bed
Hydraulic load is 4-5m3/m2.h corresponding discharge.
Described certain time refers to residence time (HRT) of the film concentrate in primary activity charcoal adsorbent bed, the present invention
For 60min.
2nd, the film concentrate after the absorption of primary adsorption bed is intake by overflow delivery port into second order activity charcoal adsorbent bed top
Mouthful, adsorbed through being filtered under the second order activity charcoal adsorbent bed equipped with reproducing adsorbent, by second order activity charcoal adsorbent bed bottom delivery port stream
Go out to enter biofilter.
Described reproducing adsorbent refers to the activated carbon place to go absorption of adsorption saturation in the primary adsorption bed using step (1)
Regenerate and obtain after thing.
3rd, secondary absorption bed goes out the film concentrate of stream and enters from bottom water inlet in biofilter, biofilter and be filled with source
Primary sludge base graininess activated carbon is as biologic packing material, while being inflated, being aerated by biofilter bottom, maintains biofilter
Interior appropriate dissolved oxygen concentration (DO), by the microbial action being attached on filler, in certain hydraulic load and stop
Between under the conditions of (HRT), the biochemical degradation of complete pair of films concentrate, then stream is gone out by the delivery port on biofilter top enter precipitation
Pond.
Described biologic packing material refers to the excess sludge of the wastewater biochemical processing procedure using corresponding industry, according to above-mentioned
The preparation method and step of source primary sludge matrix activated carbon, the 2-6mm granular active carbons being prepared from.
Described appropriate dissolved oxygen concentration in the present invention DO be 3-4mg/L between.
The described microorganism being attached on filler refers to be analogous in usual biomembrance process wastewater treatment process in filler
The mixed microorganism that surface grows naturally, the present invention need not add other external source specified microorganisms.
Described certain hydraulic load and residence time (HRT) are dense according to the initial contamination for dealing with objects film concentrate
Degree setting.
4. overflow water outlet is entered again through sedimentation basin, water inlet by sedimentation basin top after the film concentrate processing that biofilter is overflowed
Mouth enters through precipitating, and is precipitated in pond, and the suspension of entrainment is precipitated by precipitation process in the water outlet of biofilter and removed, heavy afterwards
The water outlet in shallow lake pond reaches corresponding professional standard emission request.
Described sedimentation basin is the sedimentation basin in sewage treatment industry according to the setting of biomembrance process sludge characteristics.
The method have the characteristics that：
(1) the raw material of I and II adsorbent bed activated carbon and bio-filter stuffing utilize percolate water treatment procedure
Excess sludge, it is with low cost, work well, realize the target of " treatment of wastes with processes of wastes against one another ", be prevented effectively from secondary pollution.
(2) the activated carbon of secondary absorption bed is regeneration after the activated carbon place to go adsorbate of adsorption saturation in primary adsorption bed
, not only absorption pollutant effect is good, and improves the utilization rate of raw material.
Brief description of the drawings
Fig. 1 is process flow schematic diagram of the present invention.
Embodiment
The following examples are described in further detail to the implementation of the present invention, and following examples are used to illustrate this hair
It is bright, but can not be used for limiting the scope of the present invention.
Embodiment 1
1st, the rubbish percolation liquid membrane concentrate of collection is pumped into equipped with made from source of sorbent primary sludge with corresponding flow
The bottom water inlet of the primary adsorption bed of activated carbon, the flow is to maintain the hydraulic load of primary activity charcoal adsorbent bed as 8-
10m3/m2.h scope, second order activity charcoal is spilled over to after residence time HRT=60min absorption by the top delivery port of adsorbent bed
Adsorbent bed.
Activated carbon made from source primary sludge described in the present embodiment is that percolate produces waste water by generation film concentrate
The powdery activated carbon that excess sludge through biochemical treatment process is directly prepared from.
2nd, the film concentrate after the absorption of primary adsorption bed is intake by overflow delivery port into second order activity charcoal adsorbent bed top
Mouthful, adsorbed through being filtered under the second order activity charcoal adsorbent bed equipped with reproducing adsorbent, the hydraulic load of second order activity charcoal adsorbent bed is 4-
5m3/m2.h scopes, are exited into after residence time HRT=45min absorption by second order activity charcoal adsorbent bed bottom delivery port
Biofilter.
Second order activity charcoal made from regeneration sludge described in the present embodiment is the activated carbon using adsorption saturation in step (1)
Regenerate and obtain after the adsorbate of place to go.
3rd, secondary absorption bed goes out the film concentrate of stream and enters from bottom water inlet in biofilter, biofilter and be filled with source
Primary sludge base graininess activated carbon is as biologic packing material, while being inflated, being aerated by biofilter bottom, maintains biofilter
Interior dissolved oxygen concentration DO is in 3-4mg/L scopes, by the microbial action being attached on filler, in hydraulic load 1.5-3m3/
Under the conditions of m2.h and residence time HRT >=3h, the biochemical degradation of complete pair of films concentrate, then by the delivery port on biofilter top
Go out stream and enter sedimentation basin.
The waste water that activated carbon made from described biochemical treatment sludge is produced by percolate process is in biochemical treatment
The 2-6mm granular active carbons that the remaining sludge of journey is directly prepared from.Its preparation process and activated carbon made from the primary sludge of source
Method is identical.
4th, the film concentrate that biofilter is overflowed enters through sedimentation basin water inlet precipitated in sedimentation basin again, by biological filter
The suspension precipitation carried secretly in the water outlet of pond is removed, and sedimentation basin water outlet reaches《Household refuse landfill sites Environmental capacity standard》
(GB16889-2008) emission limit requirement.
Rubbish percolation liquid membrane concentrate and sludge used by the present embodiment are derived from the landfill leachate of Fuzhou City red temple ridge
Factory is managed, wherein rubbish percolation liquid membrane concentrate is afternoon 13 on July 13rd, 2016：What 00 percolate treatment plant produced.
Inlet and outlet water water quality after the present embodiment before processing as shown in table 1, shows that effluent quality meets《Household refuse landfill sites
Environmental capacity standard》(GB16889-2008) emission limit.
Inlet and outlet water water quality after the before processing of 1 embodiment of table 1
| Water quality index | COD/mg.L-1 | NH4 +-N/mg.L-1 | TN/mg.L-1 | TP/mg.L-1 |
| Water inlet | 1120.3 | 24.7 | 89.6 | 2.3 |
| Water outlet | 95.7 | 6.5 | 9.4 | 1.5 |
Embodiment 2
The processing method of the present embodiment is same as Example 1, and different is rubbish percolation liquid membrane concentrate sample time
It is different.Because sample time is different, COD/mg.L in influent quality-1、NH4 +-N/mg.L-1、TN/mg.L-1、TP/mg.L-1Also have
Distinguished.
Rubbish percolation liquid membrane concentrate and sludge used by the present embodiment are derived from the landfill leachate of Fuzhou City red temple ridge
Factory is managed, wherein rubbish percolation liquid membrane concentrate is the morning 10 on December 22nd, 2016：What 00 percolate treatment plant produced.
Using method of the present invention, the Inlet and outlet water water quality after the present embodiment before processing as shown in table 2, shows water outlet water
Matter meets《Household refuse landfill sites Environmental capacity standard》(GB16889-2008) emission limit.
The Inlet and outlet water water quality of the embodiment 2 of table 2
| Water quality index | COD/mg.L-1 | NH4 +-N/mg.L-1 | TN/mg.L-1 | TP/mg.L-1 |
| Water inlet | 1085 | 23.8 | 86.2 | 2.8 |
| Water outlet | 89.8 | 5.7 | 6.4 | 1.3 |
Claims (7)
1. a kind of processing method of rubbish percolation liquid membrane concentrate, it is characterised in that：
1) the film concentrate of percolate is pumped into one equipped with activated carbon made from source of sorbent primary sludge with certain flow
The bottom water inlet of level adsorbent bed, is overflow after being adsorbed through the primary activity charcoal adsorbent bed regular hour by the top delivery port of adsorbent bed
Go out to second order activity charcoal adsorbent bed；
2) the film concentrate after the absorption of primary adsorption bed enters second order activity charcoal adsorbent bed top water inlet, warp by overflow delivery port
Absorption is filtered under second order activity charcoal adsorbent bed equipped with reproducing adsorbent, is exited into by second order activity charcoal adsorbent bed bottom delivery port
Biofilter；Described reproducing adsorbent refers to that the activated carbon place to go of adsorption saturation in the primary adsorption bed using step (1) is inhaled
Regenerate and obtain after addendum；
3) secondary absorption bed goes out the film concentrate of stream and enters that source life is filled with biofilter, biofilter is dirty from bottom water inlet
Mud base graininess activated carbon is as biologic packing material, while being inflated, being aerated by biofilter bottom, maintains to fit in biofilter
When dissolved oxygen concentration, by the microbial action being attached on filler, under certain hydraulic load and residence-time conditions,
The biochemical degradation of complete pair of films concentrate, then stream is gone out by the delivery port on biofilter top enter sedimentation basin；
4) overflow water outlet is entered again through sedimentation basin by sedimentation basin top after the film concentrate processing that biofilter is overflowed, and water inlet enters
Enter through precipitating, precipitated in pond, the suspension of entrainment is precipitated by precipitation process in the water outlet of biofilter and removed, final settling tanks
Water outlet reach corresponding professional standard emission request.
2. a kind of processing method of rubbish percolation liquid membrane concentrate according to claim 1, it is characterised in that described source
Primary sludge refers to the excess sludge of the generation of percolate biochemical treatment process；Described source primary sludge matrix activated carbon refers to profit
With the excess sludge for the percolate biochemical treatment process for producing film concentrate as raw material, in conditions such as high temperature, anoxybiotics
The activated carbon of lower preparation, its preparation method is as follows with step：
(1) percolate biochemical treatment excess sludge is air-dried under field conditions (factors), is then placed baking oven and is removed moisture in 105 DEG C of bakings,
Until taking out cooling after constant weight, the debris such as stone cleaning are removed, with crusher in crushing to 4-8mm, 200 mesh sieves are crossed after grinding；
(2) the raw sludge dry powder for crossing 200 mesh sieves is immersed in 8-24h in 1-3mol/L KOH, filtered filtration residue inserts baking
Case removes moisture in 105 DEG C of bakings, until taking out cooling after constant weight；
By material (2) insert in atmosphere Muffle furnace be pyrolyzed, be passed through 100-200mL/min nitrogen 15min, after with 10-20
DEG C/min programming rate is heated to 400-600 DEG C, stops after 2-3h, stops heating and is simultaneously cooled to 80 DEG C of dischargings, is placed on drying
Cooled down in device；
(4) product (3) is embathed into 5min with 1M hydrochloric acid；
(5) hydrochloric acid (4) is filtered off, solid content soaked with deionized water and filtered after 20min, deionized water immersion and filtration step weight
It is multiple 5 times, until filtrate pH is 7-8, then is put into baking oven in 105 DEG C of drying to constant weight the upper thing of filter, obtain the source of percolate
Primary sludge matrix activated carbon.
3. a kind of processing method of rubbish percolation liquid membrane concentrate according to claim 1, it is characterised in that described one
Fixed flow is that hydraulic load is 8-10m in maintenance primary adsorption bed3/m2.h it is 4-5m with hydraulic load in secondary absorption bed3/
m2.h corresponding discharge.
4. a kind of processing method of rubbish percolation liquid membrane concentrate according to claim 1, it is characterised in that described one
Fix time the residence time for referring to film concentrate in primary activity charcoal adsorbent bed, be 60min.
5. a kind of processing method of rubbish percolation liquid membrane concentrate according to claim 1, it is characterised in that described life
Thing filler refers to the excess sludge of the wastewater biochemical processing procedure using corresponding industry, according to above-mentioned source primary sludge matrix activated carbon
Preparation method and step, the 2-6mm granular active carbons being prepared from.
6. the processing method of a kind of rubbish percolation liquid membrane concentrate according to claim 1, it is characterised in that described is suitable
When dissolved oxygen concentration be that DO is between 3-4mg/L.
7. a kind of processing method of rubbish percolation liquid membrane concentrate according to claim 1, it is characterised in that described one
Fixed hydraulic load and residence time is the initial contamination concentration setting according to process object film concentrate.
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| CN201710271437.2A CN106946342A (en) | 2017-04-24 | 2017-04-24 | A kind of processing method of rubbish percolation liquid membrane concentrate |
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| CN201710271437.2A CN106946342A (en) | 2017-04-24 | 2017-04-24 | A kind of processing method of rubbish percolation liquid membrane concentrate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109835965A (en) * | 2019-03-07 | 2019-06-04 | 安徽华星化工有限公司 | A kind of abraum salt active carbon for refining adsorbent equipment |
| CN112408701A (en) * | 2020-11-03 | 2021-02-26 | 江苏通用环保集团有限公司 | Landfill leachate treatment device and treatment method based on microporous aeration and adsorption |
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| CN102120575A (en) * | 2011-03-04 | 2011-07-13 | 南京工业大学 | Process for preparing activated carbon from chemical sludge |
| CN205368070U (en) * | 2016-03-03 | 2016-07-06 | 上海合源环境科技有限公司 | System for dense water of powder active carbon adsorption refuse disposal filtration liquid film of can regenerating |
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2017
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120575A (en) * | 2011-03-04 | 2011-07-13 | 南京工业大学 | Process for preparing activated carbon from chemical sludge |
| CN205368070U (en) * | 2016-03-03 | 2016-07-06 | 上海合源环境科技有限公司 | System for dense water of powder active carbon adsorption refuse disposal filtration liquid film of can regenerating |
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| 乔玉辉: "《设施农田土壤重金属污染控制原理与技术》", 31 October 2016, 中国农业大学出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109835965A (en) * | 2019-03-07 | 2019-06-04 | 安徽华星化工有限公司 | A kind of abraum salt active carbon for refining adsorbent equipment |
| CN112408701A (en) * | 2020-11-03 | 2021-02-26 | 江苏通用环保集团有限公司 | Landfill leachate treatment device and treatment method based on microporous aeration and adsorption |
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Application publication date: 20170714 |