CN103121735B - A kind of water treatment submergence pond and water treatment device and method - Google Patents
A kind of water treatment submergence pond and water treatment device and method Download PDFInfo
- Publication number
- CN103121735B CN103121735B CN201110366853.3A CN201110366853A CN103121735B CN 103121735 B CN103121735 B CN 103121735B CN 201110366853 A CN201110366853 A CN 201110366853A CN 103121735 B CN103121735 B CN 103121735B
- Authority
- CN
- China
- Prior art keywords
- water
- submergence
- pond
- water treatment
- submergence pond
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention discloses a kind of water treatment submergence pond and water treatment device and method.Pending water is entered submergence pond by several water-in by the present invention, by the layout of multiple water-in and the energy of water inlet, make there is certain scrub function into water flowing to film surface while improving coagulating agent In-line coagulation effect, reduce fouling membrane, reduce energy consumption, prolonging service lifetime of film; By utilize this submergence pond feature and in conjunction with other equipment, obtain a kind of water treatment device of the present invention, by its operation method, can fouling membrane be reduced, reduce energy consumption, be a kind of water treatment device of novel energy-conserving.
Description
Technical field
The invention belongs to water treatment by membrane field, be specifically related to a kind of submerged membrane treatment unit.
Background technology
Growing along with membrane for water treatment technology, domestic micro-filtration/ultrafiltration membrane technique obtains significant progress in drinking water treatment field, especially in recent years, range of application was also continuous expansion, achieved good operating performance based on the water treatment by membrane technique of immersion ultrafiltration in Practical Project.
Membrane process craft at present for water treatment mainly contains coagulation+precipitation+submerged ultrafiltration, former water enters submergence pond by single suction culvert after coagulative precipitation tank, then through film filtration effluent, precipitation water turbidity is low, do not play the resistance to higher turbidity feature of submerged membrane, and technique floor space is large.
Also have and submerged ultrafiltration be placed in coagulative precipitation tank, saved occupation of land space, but due to the design of intake unreasonable, water-in function singleness, near water-in, film easily pollutes, and backwash frequency is higher, and backwash water quantity discharged is large, makes the rate of recovery relatively low; Meanwhile, for current In-line coagulation+ultra-filtration membrane technique, because its design of intake is simple, coagulating agent coagulation effect is not obvious, and feature is not obvious, makes in first coagulation process practicality not strong.
Summary of the invention
The present invention seeks to for coagulation-settlement process large for floor space in drinking water treatment, the design of intake function singleness causes film easily to pollute, make backwash frequency height backwash water displacement large, the rate of recovery declines, the shortcoming that practicality is not strong, in conjunction with In-line coagulation+immersed ultrafiltration membrane process feature, a kind of water treatment submergence pond and water treatment device and method are provided, by submergence pond water-in function, improve In-line coagulation effect, thus reduction fouling membrane, reduce backwash water quantity discharged, improve film work-ing life.
The present invention is a kind of water treatment submergence pond, and overflow port is arranged at top, submergence pond, there is water-in at middle part, discharge outlet is arranged at bottom for this, and described water-in is multiple.
Consider size and the height of membrane cisterna and process water yield reason, in the present invention, multiple water-in is preferably 2 ~ 4.
Described each water-in is preferred is further provided with one section of thrust-augmenting nozzle in the submergence pond of corresponding position, and it guides water inlet obliquely along immersion inwall and the flowing of membrane cisterna inner membrane member.Make the water inlet of different positions to keep in membrane cisterna flow velocity and flow direction between membrane module and membrane cisterna to energy, meanwhile, improve coagulation effect.
Consider the impact reason of different positions water inlet to membrane module, each water-in thrust-augmenting nozzle described in the present invention and submergence pool wall tangent plane in a certain angle, angular dimension is according to each water-in flooding velocity size adjustment, and flooding velocity and flow velocity are controlled by each water inlet valve.
Described each water-in be positioned at submergence pond in the middle part of membrane module upper and lower; Lower water inlet position is a little less than hyperfiltration membrane assembly vertical height lower end in submergence pond, and top water-in is positioned in the middle part of the hyperfiltration membrane assembly vertical height of pond.The low impact to film silk of lower water inlet can be ignored, and water inlet is flowed around membrane cisterna from lower end and is risen, but because energy reduction top water can not around membrane cisterna rotational flow after certain altitude, therefore water-in supplementary water inlet energy is increased at middle part, current in whole membrane cisterna are made to be rotational flow state, reach macrobead can sink fast, film surface is cleaned simultaneously.
The present invention also provides a kind of water treatment device, comprises above-mentioned submergence pond, also comprises raw water pump, coagulant dosage device, suction pump, backwashing pump, product water tank; Former water adds finite concentration coagulating agent by coagulant dosage device 4, mixed solution enters submergence pond 5 through raw water tubes road and different water-in 1 and 2 respectively by after raw water pump 3 pump mix and blend, produce water valve 8 to open, suction pump 9 film of starting working filters, when after running certain hour, water level reach a certain height, suction pump 9 stops and producing water valve 8 closing; System carries out backwash, opens backwash valve 10 and starts backwashing pump 11, opening backwash water discharge valve 12 and compressed air valve 13 simultaneously, carry out backwash and air bump rinse operation, and film surface contaminant rises with bubble and discharged by backwash discharge pipe line 12; Along with working time increases, regularly open mud discharging valve 14 and carry out spoil disposal.
The present invention also provides a kind of water treatment method, its method is that coagulation system is to pending former water dosing coagulant, coagulating agent and former water mixed liquid enter submergence pond along different water-in after pump mixing, around submergence pond circular inner wall and film surface flow after different suction culvert water outlet, membrane module starts to filter by suction pump; After running certain hour, backwashing pump is opened and is carried out backwash to film, and the water discharge valve of backwash is simultaneously opened and pressurized air carries out surface scouring to film, and backwash water is discharged by discharge pipe line; Be provided with mud valve and pipeline bottom submergence pond, regularly outside submergence pond, discharge mud.
Therefore in sum, principal feature of the present invention is:
1. by the change of water intake mode, thrust-augmenting nozzle water outlet forms eddy flow by pumping water energy along circular submergence pond inwall, improve In-line coagulation effect, flocculation macrobead is made easily to be sunken to storage basin, and the small-particle that flocculates forms loose cake layer on film surface, be conducive to increasing water quality, reduce mould poor, reduce energy consumption;
2. water inlet forms cross-flow and has scrubbing action with film surface to film surface, reduction fouling membrane, extends film work-ing life;
3. because In-line coagulation technological effect is obvious, this device fully shows its technique and takes up an area little advantage.
Accompanying drawing explanation
Fig. 1 is 2 water-in water treatment device schematic diagram.
Wherein 1,2 is device suction culvert and valve; 3 is raw water pump; 4 is coagulant dosage device; 5 is submergence pond; 6 is hollow fiber film assembly; 7 for producing water tank; 8 for producing water valve; 9 is suction pump; 10 is backwash valve; 11 is backwashing pump; 12 is backwash water discharge valve; 13 is compressed air valve; 14 is mud discharging valve.
Fig. 2 is submergence pond A-A sectional view.
Embodiment
Testing method:
CODMn: acid potassium permanganate process.
Turbidity: HACH2100N turbidimeter.
A kind of water treatment device according to Fig. 1 and method, comprise raw water pump, coagulant dosage device, ultra-filtration membrane submergence pond, suction pump, backwashing pump, product water tank.Raw water tubes is connected with raw water pump, and coagulant dosage device is set before above-mentioned raw water pump, raw water pump is connected with submergence pond suction culvert 1 and submergence pond suction culvert 2 respectively through control valve, submerged hollow fiber membrane is placed in submergence pond and is connected product water tank through suction pump with water outlet pipe valve, and backwash pipeline connects hollow-fibre membrane by producing water tank through backwashing pump.
Embodiment 1:
This test adopts certain surface water, and its turbidity is at about 10 ~ 20NTU, COD
mnat about 3mg/L.Raw water quality belongs to III class water body, and water body is only subject to light contamination.The operation process of system is the technique of In-line coagulation+immersion ultrafiltration.Wherein submerged ultrafiltration is hollow fiber ultrafiltration membrane, and membrane pore size is 0.01 micron, and material is PVDF ultrafiltration membrane.Operating flux is 1.7m/d.Adopt conventional water intake mode and plant running, run 30min backwash 1.0min, the backwash water yield is water production rate 1.1 times, emptying submergence pond after backwash, the rate of recovery is 93%, and film CIP cleaning frequency is 90 days, adopt this plant running, the rate of recovery reaches 96%, CIP cleaning frequency can reach 150 days.
Embodiment 2:
This test adopts the former water of micro-polluted surface, and its turbidity is at more than 30NTU, COD
mnat about 4mg/L.The operation process of system is the technique of In-line coagulation+immersion ultrafiltration.Wherein submerged ultrafiltration is hollow fiber ultrafiltration membrane, and membrane pore size is 0.01 micron, and material is PVDF ultrafiltration membrane.Operating flux is 1.7m/d.Adopt conventional water intake mode and plant running, run 30min backwash 1.0min, the backwash water yield is water production rate 1.1 times, emptying submergence pond after backwash, mould differs from 30 ~ 55kPa, and the backwash rate of recovery is 94%, film CIP cleaning frequency is 30 days, adopt this plant running, mould differs from 30 ~ 45kPa, and the rate of recovery reaches 96%, CIP cleaning frequency can reach 90 days, reduce energy consumption, improve the rate of recovery, extend membrane lifetime.
Claims (4)
1. a water treatment submergence pond, overflow port is arranged at top, submergence pond, there is water-in at middle part, discharge outlet is arranged at bottom for this, it is characterized in that: described water-in is multiple, each water-in be positioned at submergence pond in the middle part of membrane module upper and lower; Lower water inlet position is a little less than hyperfiltration membrane assembly vertical height lower end in submergence pond, and top water-in is positioned in the middle part of the hyperfiltration membrane assembly vertical height of pond; And each water-in is provided with one section of thrust-augmenting nozzle in the submergence pond of corresponding position, guide water inlet obliquely along immersion inwall and the flowing of membrane cisterna inner membrane member, thrust-augmenting nozzle and submergence pool wall tangent plane in a certain angle, angular dimension is according to each water-in flooding velocity size adjustment, and flooding velocity and flow velocity are controlled by each water inlet valve.
2. submergence pond according to claim 1, is characterized in that: described multiple water-ins are 2 ~ 4.
3. a water treatment device, is characterized in that: comprise submergence pond according to claim 1.
4. a water treatment method, is characterized in that: pending water is through submergence pond filtration treatment described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110366853.3A CN103121735B (en) | 2011-11-18 | 2011-11-18 | A kind of water treatment submergence pond and water treatment device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110366853.3A CN103121735B (en) | 2011-11-18 | 2011-11-18 | A kind of water treatment submergence pond and water treatment device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103121735A CN103121735A (en) | 2013-05-29 |
| CN103121735B true CN103121735B (en) | 2016-04-20 |
Family
ID=48452928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110366853.3A Expired - Fee Related CN103121735B (en) | 2011-11-18 | 2011-11-18 | A kind of water treatment submergence pond and water treatment device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103121735B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193260B (en) * | 2022-09-16 | 2023-05-23 | 宁波日新恒力科技有限公司 | Ultrafiltration membrane assembly with drainage filtering function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102135A (en) * | 1992-04-30 | 1995-05-03 | 伊塔尔特雷科有限公司 | Device and method to separate the components in mixtures of non-miscible liquids |
| JPH09299948A (en) * | 1996-05-08 | 1997-11-25 | Keiaikai | Water treatment device and method therefor |
| CN101125281A (en) * | 2007-06-12 | 2008-02-20 | 天津膜天膜工程技术有限公司 | Immersion type hollow fiber membrane separator and its running process |
| CN201757270U (en) * | 2010-05-25 | 2011-03-09 | 云南大红山管道有限公司 | Overflow system of slurry mixing tank |
-
2011
- 2011-11-18 CN CN201110366853.3A patent/CN103121735B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102135A (en) * | 1992-04-30 | 1995-05-03 | 伊塔尔特雷科有限公司 | Device and method to separate the components in mixtures of non-miscible liquids |
| JPH09299948A (en) * | 1996-05-08 | 1997-11-25 | Keiaikai | Water treatment device and method therefor |
| CN101125281A (en) * | 2007-06-12 | 2008-02-20 | 天津膜天膜工程技术有限公司 | Immersion type hollow fiber membrane separator and its running process |
| CN201757270U (en) * | 2010-05-25 | 2011-03-09 | 云南大红山管道有限公司 | Overflow system of slurry mixing tank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103121735A (en) | 2013-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101122222B1 (en) | Water treatment apparatus and a method for cleaning a filter layer of a water treatment apparatus | |
| US8349176B2 (en) | Modular integrated water-purifying device | |
| CN201433143Y (en) | External pressure type ultra-filtration membrane water purification device | |
| CN103523968B (en) | Integrated water purification device | |
| CN108002570A (en) | A kind of environmental protection food and drink waste water processing oil-water separation tank | |
| CN105060488A (en) | Sewage deep treatment method by using oxygenation filter system | |
| CN103626259A (en) | Immersed type membrane pool and operation method thereof | |
| CN102107968A (en) | Water purification system and water purification method of flotation filter tank | |
| CN208791356U (en) | A kind of oil field water factory hyperfiltration treatment process unit | |
| CN202785852U (en) | Reclaimed water recycling device | |
| CN103121735B (en) | A kind of water treatment submergence pond and water treatment device and method | |
| CN201458897U (en) | Jet airlift MBR device | |
| CN202671258U (en) | Gravity membrane filtering device | |
| CN206308221U (en) | Carwash circulating water purifying processing device | |
| CN202705198U (en) | Micropollution drinking water treatment device | |
| CN1319867C (en) | Airfloat filtering pond | |
| CN102730781B (en) | Circular current dissolved air copolymerization flotation system and technology | |
| CN206715401U (en) | One kind feedwater V-type filter tank | |
| CN211620172U (en) | High-density air flotation sedimentation tank | |
| CN108164038A (en) | A kind of Water feeding treatment device and processing method | |
| CN106430739A (en) | Sea-water-desalination pre-treatment system and technology for nuclear power station | |
| CN208883595U (en) | A kind of integration seawater desalinization pretreatment device | |
| CN207567008U (en) | A kind of environmental protection food and drink waste water processing oil-water separation tank | |
| CN201940109U (en) | Rotary disk filter tank | |
| CN207259196U (en) | Air supporting removal of impurities water purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20181118 |