CN108275828A - A kind of light polluted water purification processing method and processing device - Google Patents
A kind of light polluted water purification processing method and processing device Download PDFInfo
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- CN108275828A CN108275828A CN201711487189.1A CN201711487189A CN108275828A CN 108275828 A CN108275828 A CN 108275828A CN 201711487189 A CN201711487189 A CN 201711487189A CN 108275828 A CN108275828 A CN 108275828A
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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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- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention relates to surface water treatment technical fields, more particularly to and disclose a kind of light polluted water purification processing method, include the following steps：1）Grid filtration, sedimentation basin precipitation, coagulant materializing strategy；2）It adds carbon source and improves carbon-nitrogen ratio, increase biodegradability；3）Nitrification and denitrification effect is carried out in high-efficiency bio-filter pool, and partial reflux repeats step 2）With 3）；4）Water outlet carries out membrane filtration through immersion ultrafiltration apparatus；5）Ultrafiltration production water enters ozone contact tower and further removes Organic substance in water qualified discharge.The purifying processing device for being applicable in the above method is also disclosed in the present invention.A kind of light polluted water purification processing method and processing device of the present invention, to the water body gently polluted, it can make stable water outlet and be better than 4 class water discharge standard of earth's surface, have the advantages that flux is big, impact resistance is strong, high treating effect, sustainable stable operation and technology require that low, investment is small, effective deep purifying processing can be carried out to surface water resources such as river and lakes.
Description
Technical field
The present invention relates to surface water depth processing technology field more particularly to a kind of light polluted water purification processing method and
Device.
Background technology
With the rapid development of the national economy, water bodies of rivers and lakes pollutes, eutrophication is increasingly severe.China faces at this stage
The problem of shortage of water resources, water environment degradation.The water resource that daily production and living can especially be met is increasingly in short supply.It is how net
Changing the river and lake water of slight pollution becomes daily production and living water, solves the problem of water consumption of people, is that current people are badly in need of solving
The problem of.Zhejiang Province will be required to the end of the year 2017, and the whole province thoroughly eliminates the action scheme of bad V class water, consolidates improvement water environment matter
Amount keeps all kinds of waters water bodys such as river, lake, pond, irrigation canals and ditches clean, realizes that environment is neatly graceful, the clear bank of water is green.
Current advanced treatment process is mainly ozone-active carbon absorbing process, this technique combines ozone oxidation, activity
Charcoal absorption, microorganism adsorption effect.However, due to the organism kinds in different micro polluted sources, burst pollution species
Difference keeps Ozone-Active Carbon Process operating parameter used also multifarious, results in current advanced treating effect and still pays no attention to
Think.
Application No. is 02128903.4 patents《It is micro- that ultrafiltration-jet stream supplementing ozone-ultraviolet secondary excitation generates free radicals purification
The technology and technique of polluted source water》Dissolved oxygen and ozone in secondary excitation water while ultraviolet disinfection are disclosed, is generated
Free radical with strong oxidizing property can kill various pathogen and remove oil removal etc., but cannot remove in light polluted surface water
Ammonia nitrogen；It is related to the patent of the light contaminant water of hyperfiltration treatment such as《For the combined type ultrafiltrationmembrane process processing unit of drinking water treatment》
200420109820.6 utility models are the optimization that disinfection way is combined with ultrafiltration, are not directed to biochemical treatment, can not go to remove water
In ammonia nitrogen；Patent《A kind of method and device of processing micro-polluted surface water》200910087209.5 using biofilter-
The process of coagulating sedimentation-ultrafiltration dual-membrane process processing micro-polluted surface water, effectively reduces the ammonia nitrogen in water body, has
The contamination indexes such as machine object, turbidity, permeant flux are also improved, but the load of system is relatively low, and pollutant mainly leads in water body
Traditional biological filter tank is crossed to degrade, there is no apparent removal rates for coagulating sedimentation and membrane filtration itself, and traditional biological filter tank is rushed
After hitting, no subsequent technique carries out advanced treating, and external ultrafiltration membrane system is high to pre-processing requirements, and easy generation pollution is blocked up film and showed
As.
Therefore it provides a kind of technology requires, low, investment is small, flux is big, impact resistance is strong, can be provided to surface water such as river and lakes
The scheme that source carries out deep purifying processing has positive effect.
Invention content
In view of the problems of the existing technology, a kind of flux of present invention offer is big, impact resistance is strong, can be to river and lake and other places
Table water resource carries out the light polluted water purification processing method and processing device of the technique of deep purifying processing.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of light polluted water purification processing method, includes the following steps：
1）Light polluted-water retains impurity, the foreign matter of larger particles, then be promoted to sedimentation basin through raw water pump and sink through grid filtration
It forms sediment, by the way that coagulant is added, further removes gravel and TP；
2）Sedimentation basin enters the first intermediate water tank by flow by gravity water outlet, and adds carbon source and improve carbon-nitrogen ratio, can be given birth to increasing
The property changed, it is then boosted to pump into high-efficiency bio-filter pool；
3）Nitrification and denitrification effect is carried out in high-efficiency bio-filter pool, organics removal is discharged and enters the second intermediate water tank, and second
Water section in intermediate water tank is back to the first intermediate water tank and carries out circular treatment, and the water in the second intermediate water tank is periodically to efficient
Biofilter carries out backwash, and the organic matter includes ammonia nitrogen, TN, COD；
4）Water outlet in second intermediate water tank, boosted pump enter immersion ultrafiltration apparatus and carry out membrane filtration, and ultrafiltration apparatus passes through
Suction pump negative pressure produces water, and production water pressure is between -0.01MPa ~ -0.2MPa, and permeant flux is in 15L/m2.h~100L/m2.h it
Between；
5）Ultrafiltration production water enters ozone contact tower, and further removal Organic substance in water, ozone contact tower are acted on by advanced oxidation
Standard water discharge is discharged.
Light polluted-water（Including surface water such as rivers, lakes, pollutant index is in following range：20 ~ 40NTU of turbidity,
CODcr30 ~ 60mg/l, ammonia nitrogen 5 ~ 15mg/l, pH6-9, BOD510 ~ 20mg/l, TP1 ~ 2mg/l, TN10 ~ 20mg/l）, by lattice
Grid filtering, coagulating sedimentation, high-efficiency bio-filter pool（BAF）, ultrafiltration membrance filter, ozone high grade oxidation processing, effectively remove water
Organic matter, ammonia nitrogen, TP in body（Total phosphorus）Equal pollutants, have apparent removal effect, and effluent quality is steady to turbidity, coloration
Calmly, flux is big, reaches and is better than 4 class water discharge standard of earth's surface.
Preferably, step（3）The high-efficiency bio-filter pool includes the ponds DN and the ponds CN successively, and the ponds DN carry out denitrification work
With the ponds CN carry out nitrification, and high-efficiency bio-filter pool is using zeolite, slag or/and haydite as filler.Use the ponds BAFDN（Before
Set formula denitrification bio-filter）With the ponds BAFCN（Biological aerated filter）, compared with traditional biological filter tank, reflux effect is increased,
To the removal rate higher of pollutant, impact resistance is strong, and effluent quality is better than traditional biological filter tank.
Preferably, step 1）The grid fine grid in being, filtering accuracy 0.5mm ~ 1mm.Grid filtration, retention
Impurity, the foreign matter of larger particles.
Preferably, step 1）The coagulant is aluminum sulfate, iron chloride, ferrous sulfate, sodium aluminate, aluminium polychloride
One or more of mixing.Coagulant further removes molecule larger molecular organics and TP in gravel, part（Total phosphorus）.
Preferably, step 4）It is equipped with hyperfiltration reverse-rinsing aerating system outside the immersion ultrafiltration apparatus, and is aerated
Intensity is in 0.2~0.4m3/m2min.Aeration intensity is high, can be built up on film wire surface to avoid pollutant, effectively mitigate film
Pollution level.
Preferably, step 4）The immersion ultrafiltration apparatus uses hollow fiber composite membrane, membrane material PVDF.In
Empty fiber membrane tensile strength is more than 15MPa, and the hollow fiber composite membrane of high intensity is adapted to high aeration intensity, will not break
Silk, is conducive to that pollutant is avoided to accumulate, and producing water water quality is stablized, and membrane flux is effectively improved, and the longevity is used compared with traditional ultrafiltration membrane
Life length, it is anti-oxidant, antifouling property is more preferable.
Preferably, step 5）Middle ozone usage is 2~20mg/l.Further improve whole system stability and
To the removal efficiency of pollutant, higher influent quality condition can be born, the unusual fluctuations occurred for influent quality can also have
Effect pair.
A kind of light polluted water purification processing unit includes successively collecting-tank, grid, sedimentation basin, further includes being sequentially connected with
The first intermediate water tank, high-efficiency bio-filter pool, the second intermediate water tank, immersion ultrafiltration apparatus, ozone contact tower, filtered water tank,
In the second intermediate water tank water outlet be also connected to the first intermediate water tank water inlet carry out circular treatment, and be connected to high-performance bio filter
Pond water outlet carries out backwash, and the water outlet that filtered water tank water outlet is also connected to immersion ultrafiltration apparatus carries out backwash, high-performance bio
Filter tank bottom connects filter tank aeration and backwashing system, and immersion ultrafiltration apparatus bottom connects hyperfiltration reverse-rinsing aerating system.
Preferably, the medicine system of coagulant is launched in setting between grid, sedimentation basin.
Preferably, high-efficiency bio-filter pool includes the ponds DN and the ponds CN successively.
A kind of light polluted water purification processing method and processing device of the present invention, for generally by gently polluting in various degree
Water body is combined by coagulating sedimentation materializing strategy and high-efficiency bio-filter pool, ultrafiltration membrance filter, ozone high grade oxidation,
It can make stable water outlet and be better than 4 class water discharge standard of earth's surface, have that flux is big, impact resistance is strong, high treating effect, can hold
Continuous stable operation and technology require advantage low, that investment is small, can carry out effective deep purifying to surface water resources such as river and lakes
Processing.
Description of the drawings
Fig. 1 is a kind of light polluted water purification processing device structure diagram described in the embodiment of the present invention.
Specific implementation mode
With reference to Fig. 1, the present invention is described further with specific implementation mode.
A kind of light polluted water purification processing method, includes the following steps：
1）Light polluted-water（Lake Water）, CODcrFor 56mg/l, ammonia nitrogen 18mg/l, TP 2.1mg/l, turbidity is
38NTU, through grid（In fine grid, precision 1mm）Filtering, retains impurity, the foreign matter of larger particles, then promoted through raw water pump
It is precipitated to sedimentation basin, by the way that aluminum sulfate coagulant, iron chloride is added, it is organic further to remove molecule macromolecular in gravel, part
Object and TP, water outlet TP are down to 0.48mg/l；
2）Sedimentation basin enters the first intermediate water tank by flow by gravity water outlet, and adds carbon source and improve carbon-nitrogen ratio, can be given birth to increasing
The property changed, it is then boosted to pump into high-efficiency bio-filter pool；
3）High-efficiency bio-filter pool includes the ponds DN and the ponds CN successively, and the ponds DN carry out denitrification, and the ponds CN carry out nitrification, removal
Organic matter.High-efficiency bio-filter pool is using zeolite, slag and haydite as filler.It is discharged and enters the second intermediate water tank, among second
Water section in water tank is back to the first intermediate water tank and carries out circular treatment, reflux ratio 200%, the water in the second intermediate water tank
Backwash periodically is carried out to high-efficiency bio-filter pool, while mud discharging device is equipped in high-efficiency bio-filter pool bottom, periodically to biofilter
Spoil disposal, the organic matter include ammonia nitrogen, TN, COD, and it is 20mg/l, ammonia nitrogen 0.89mg/l, TP that high-efficiency bio-filter pool, which is discharged COD,
For 0.09mg/l, turbidity 8.65NTU；
4）Water outlet in second intermediate water tank, boosted pump enter immersion ultrafiltration apparatus and carry out membrane filtration, immersion ultrafiltration dress
Set use hollow fiber composite membrane, membrane material PVDF, by suction pump negative pressure produce water, production water pressure -0.01MPa ~ -
Between 0.2MPa, for permeant flux between 15L/m2.h ~ 100L/m2.h, production water turbidity can be down to 0.12NTU；The submergence
Hyperfiltration reverse-rinsing aerating system is equipped with outside formula ultrafiltration apparatus, and aeration intensity is in 0.2~0.4m3/m2min.
5）Ultrafiltration production water enters ozone contact tower, acts on further removal Organic substance in water by advanced oxidation, ozone is used
Amount is 10mg/l, the discharge of ozone contact tower standard water discharge.Production water COD reaches 15mg/l, and ammonia nitrogen reaches 0.89mg/l, and TP reaches
0.09mg/l, turbidity reach 0.12NTU.
A kind of light polluted water purification processing unit, as shown in Fig. 1, successively include collecting-tank 1, grid 2, sedimentation basin 3,
The medicine system 12 of coagulant is launched in setting between grid 2, sedimentation basin 3, further include the first intermediate water tank 4 connected in sequence,
High-efficiency bio-filter pool 5, the second intermediate water tank 6, immersion ultrafiltration apparatus 7, ozone contact tower 8, filtered water tank 9, wherein among second
6 water outlet of water tank is also connected to 4 water inlet of the first intermediate water tank and carries out circular treatment, and is connected to the water outlet of high-efficiency bio-filter pool 5
Mouth carries out backwash, and the water outlet that 9 water outlet of filtered water tank is also connected to immersion ultrafiltration apparatus 7 carries out backwash, high-efficiency bio-filter pool 5
Include the ponds DN 13 and the ponds CN 14 successively.5 bottom of high-efficiency bio-filter pool connects filter tank aeration and backwashing system 10, immersion ultrafiltration
7 bottom of equipment connects hyperfiltration reverse-rinsing aerating system 11.
By the light polluted-water of grid 2 inclined-plate clarifying basin 3, the first intermediate water tank 4 and height are arrived by the extracting of raw water pump 15
Effect is equipped with elevator pump 16 between biofilter 5；There is reflux pump 17 between second intermediate water tank 6 and the first intermediate water tank 4；In second
Between ultrafiltration intake pump 18 is provided between water tank 6 and immersion ultrafiltration apparatus 7；Inclined-plate clarifying basin 3 and the first intermediate water tank 4 it
Between, between high-efficiency bio-filter pool 16 and the second intermediate water tank 6, it is logical between immersion ultrafiltration apparatus, ozone contact tower, filtered water tank
Piping, valve connection（It is not shown in figure）
It is only presently preferred embodiments of the present invention in summary, practical range not for the purpose of limiting the invention is all special according to the application
Equivalent changes and modifications made by the content of sharp range all should be the technology scope of the present invention.
Claims (10)
1. a kind of light polluted water purification processing method, it is characterised in that：Include the following steps：
1）Light polluted-water retains impurity, the foreign matter of larger particles, then be promoted to sedimentation basin through raw water pump and sink through grid filtration
It forms sediment, by the way that coagulant is added, further removes gravel and TP；
2）Sedimentation basin enters the first intermediate water tank by flow by gravity water outlet, and adds carbon source and improve carbon-nitrogen ratio, can be given birth to increasing
The property changed, it is then boosted to pump into high-efficiency bio-filter pool；
3）Nitrification and denitrification effect is carried out in high-efficiency bio-filter pool, organics removal is discharged and enters the second intermediate water tank, and second
Water section in intermediate water tank is back to the first intermediate water tank and carries out circular treatment, and the water in the second intermediate water tank is periodically to efficient
Biofilter carries out backwash, and the organic matter includes ammonia nitrogen, TN, COD；
4）Water outlet in second intermediate water tank, boosted pump enter immersion ultrafiltration apparatus and carry out membrane filtration, and ultrafiltration apparatus passes through
Suction pump negative pressure produces water, and production water pressure is between -0.01MPa ~ -0.2MPa, and permeant flux is in 15L/m2.h~100L/m2.h it
Between；
5）Ultrafiltration production water enters ozone contact tower, and further removal Organic substance in water, ozone contact tower are acted on by advanced oxidation
Standard water discharge is discharged.
2. a kind of light polluted water purification processing method according to claim 1, it is characterised in that：Step（3）Described
High-efficiency bio-filter pool includes the ponds DN and the ponds CN successively, and the ponds DN carry out denitrification, and the ponds CN carry out nitrification, high-performance bio filter
Pond is using zeolite, slag or/and haydite as filler.
3. a kind of light polluted water purification processing method according to claim 1, it is characterised in that：Step 1）The lattice
Grid fine grid in being, filtering accuracy 0.5mm ~ 1mm.
4. a kind of light polluted water purification processing method according to claim 1, it is characterised in that：Step 1）Described is mixed
Solidifying agent is the mixing of one or more of aluminum sulfate, iron chloride, ferrous sulfate, sodium aluminate, aluminium polychloride.
5. a kind of light polluted water purification processing method according to claim 1, it is characterised in that：Step 4）The leaching
And be not equipped with hyperfiltration reverse-rinsing aerating system outside formula ultrafiltration apparatus, and aeration intensity is in 0.2~0.4m3/m2min.
6. a kind of light polluted water purification processing method according to claim 1, it is characterised in that：Step 4）The leaching
Do not have formula ultrafiltration apparatus that hollow fiber composite membrane, membrane material PVDF, hollow-fibre membrane tensile strength is used to be more than 15MPa.
7. a kind of light polluted water purification processing method according to claim 1, it is characterised in that：Step 5）Middle ozone is used
Amount is 2~20mg/l.
8. a kind of light polluted water purification processing unit includes collecting-tank successively（1）, grid（2）, sedimentation basin（3）, feature exists
In：It further include the first intermediate water tank connected in sequence（4）, high-efficiency bio-filter pool（5）, the second intermediate water tank（6）, immersion ultrafiltration
Equipment（7）, ozone contact tower（8）, filtered water tank（9）, wherein the second intermediate water tank（6）Water outlet is also connected to the first intermediate water tank
（4）Water inlet carries out circular treatment, and is connected to high-efficiency bio-filter pool（5）Water outlet carries out backwash, filtered water tank（9）Water outlet is also
It is connected to immersion ultrafiltration apparatus（7）Water outlet carry out backwash, high-efficiency bio-filter pool（5）Bottom connects filter tank aeration and recoil
Wash system（10）, immersion ultrafiltration apparatus（7）Bottom connects hyperfiltration reverse-rinsing aerating system（11）.
9. a kind of light polluted water purification processing unit according to claim 8, it is characterised in that：In grid（2）, precipitation
Pond（3）Between setting launch coagulant medicine system（12）.
10. a kind of light polluted water purification processing unit according to claim 8, it is characterised in that：High-efficiency bio-filter pool
（5）Include the ponds DN successively（13）With the ponds CN（14）.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171906A (en) * | 2019-06-13 | 2019-08-27 | 江西挺进环保科技有限公司 | A kind of basin-wide Rare-earth Mine tail water treatment system and treatment process |
| CN110845046A (en) * | 2019-12-04 | 2020-02-28 | 杭州求是膜技术有限公司 | Distributed drinking water deep treatment method and device |
| CN111018115A (en) * | 2020-01-09 | 2020-04-17 | 成都市农林科学院 | Biological membrane device and freshwater aquaculture tail water treatment method |
| CN111423067A (en) * | 2020-04-20 | 2020-07-17 | 中国市政工程华北设计研究总院有限公司 | Multifunctional advanced treatment combined system for town sewage and operation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171906A (en) * | 2019-06-13 | 2019-08-27 | 江西挺进环保科技有限公司 | A kind of basin-wide Rare-earth Mine tail water treatment system and treatment process |
| CN110845046A (en) * | 2019-12-04 | 2020-02-28 | 杭州求是膜技术有限公司 | Distributed drinking water deep treatment method and device |
| CN111018115A (en) * | 2020-01-09 | 2020-04-17 | 成都市农林科学院 | Biological membrane device and freshwater aquaculture tail water treatment method |
| CN111018115B (en) * | 2020-01-09 | 2022-03-22 | 成都市农林科学院 | Biological membrane device and freshwater aquaculture tail water treatment method |
| CN111423067A (en) * | 2020-04-20 | 2020-07-17 | 中国市政工程华北设计研究总院有限公司 | Multifunctional advanced treatment combined system for town sewage and operation method thereof |
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Application publication date: 20180713 |