CN209338257U - The processing unit of hardness in multistep combined removal water - Google Patents
The processing unit of hardness in multistep combined removal water Download PDFInfo
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- CN209338257U CN209338257U CN201821657316.8U CN201821657316U CN209338257U CN 209338257 U CN209338257 U CN 209338257U CN 201821657316 U CN201821657316 U CN 201821657316U CN 209338257 U CN209338257 U CN 209338257U
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- membrane
- pump
- stirring pool
- hardness
- pond
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Abstract
The utility model discloses the processing unit of hardness in multistep combined removal water, including raw water feed pipe, the raw water feed pipe is connected to the water inlet for being granulated stirring pool top through intake pump, the supernatant pipeline of stirring pool is granulated through the water inlet on intermediate lift pump junctional membrane separate tank top, the hollow-fibre membrane inside UF membrane pond is connect through outlet pipe with water outlet pump；Precipitating reagent adds pump and connects the feeding opening for being granulated stirring pool top by chemical feed pipe；Coagulant dosage pump passes through the feeding opening on chemical feed pipe junctional membrane separate tank top；It is granulated stirring pool and blender is housed；The air hose of air blower junctional membrane separation bottom of pond portion；Hydrochloric acid adds pump and passes through chemical feed pipe and pipe-line mixer junctional membrane separate tank outlet pipe；Liquidometer is respectively mounted in granulation stirring pool and UF membrane pond.The utility model effectively overcomes the disadvantages of lime-soda precipitating tenderizer quiet heavy time is long, sludge output is big；Hardness removal rate is improved, environment and social effect are significant.
Description
Technical field
The utility model relates to a kind of water treatment technologies, are exactly to remove calcium ion and magnesium ion from water, provide
The processing unit of hardness in a kind of multistep combined removal water.
Background technique
Hardness is an important water quality indicator, is usually characterized with calcium ion, the magnesium ion equal size in water.Real life
In, drinking hard water will cause functions of intestines and stomach disorder, or even lure angiocarpy, nerve, urinary system disease etc. into.In industrial production,
Excessive high hardness may reduce the quality of product, or form scale blocking pipeline etc., it influences normally to produce or set off an explosion.Cause
This, go water removal in calcium ion and magnesium ion it is significant.
Hardness ions in water generally use the removal of the methods of chemical precipitation, ion exchange, UF membrane and electrochemistry.Ion
Exchange process is influenced by resin exchange capacity, has strict demand to the salt content of water inlet, and resin price is higher and generation needs
The regeneration liquid waste being further processed；Electrochemical process power consumption is larger, the drinking water treatment suitable for high salinity；Nanofiltration/reverse osmosis
Although can efficiently go the hardness in water removal thoroughly, high energy consumption limits the application of technology, chemical precipitation-micro-filtration/
There are fouling membranes for hyperfiltration technique seriously, is difficult to realize the defects of engineering.
Lime-soda precipitates tenderizer simple process, rate of deposition height, suitable for the sofening treatment of different requirements, but its
Sludge output is big, the quiet heavy time is long, leads to that structures volume is larger, sludge treatment is costly.The new chemical precipitation method are such as based on urinating
The microorganism catalysis CaCO of element hydrolysis3The precipitation method utilize CO2It is dissolved in water and generates CO3 2-, make itself and Mg2+、Ca2+Precipitating etc. is formed,
Although the hardness in water removal can preferably be gone, using more difficulty in engineering, its development is limited.
Utility model content
In view of the problems of the existing technology, the utility model proposes it is suitable engineering application granulation precipitating-coagulation/
UF membrane joint technology forms the good large-size particles object of settleability, effectively overcome lime-soda precipitating tenderizer it is quiet heavy when
Between long, disadvantage that sludge output is big, and coagulation can make the accelerated sedimentation of small size particle, and decelerating membrane pollution, hardness removal
Rate is high, operating cost is low, and environment and social effect are significant.
The technical solution of the utility model is as follows: the processing unit of the method for hardness in multistep combined removal waste water, including
Raw water feed pipe, the raw water feed pipe are connected to the water inlet for being granulated stirring pool top through intake pump, are granulated the upper of stirring pool
Water inlet of the clear liquid pipeline through intermediate lift pump junctional membrane separate tank top, the hollow-fibre membrane inside UF membrane pond is through outlet pipe
It is connect with water outlet pump；Precipitating reagent adds pump and connects the feeding opening for being granulated stirring pool top by chemical feed pipe；Coagulant dosage pump is logical
Cross the feeding opening on chemical feed pipe junctional membrane separate tank top；It is granulated stirring pool and blender is housed；Air blower junctional membrane separates bottom of pond portion
Air hose；Hydrochloric acid adds pump and passes through chemical feed pipe and pipe-line mixer junctional membrane separate tank outlet pipe；It is being granulated stirring pool and film
Separate tank is respectively mounted liquidometer.
Granulation stirring pool described in the utility model and UF membrane pond are both made of cylinder and circular cone two parts.
Granulation stirring pool cone angle described in the utility model is the product of 116 °, wherein cylinder and tapered segment than being 12:1.
UF membrane pond described in the utility model cone angle is the product of 112 °, wherein cylinder and tapered segment than being 16:1.
Hollow-fibre membrane described in the utility model is microfiltration membranes or ultrafiltration membrane.
The utility model has the beneficial effects that:
1, the utility model can in significant water lift hardness (calcium and magnesium ion) removal effect, reduce sludge quantity, be discharged turbid
Degree is stablized.Reactor based on this method, which can according to need, is designed to fixed or wheeled apparatus, and design scale can also be with
It flexibly chooses, the scope of application is not limited only to water process, can expand as needed to Industrial Wastewater Treatment, environment and social effect are aobvious
It writes.
2, the utility model adds calcium carbonate crystal seed and sodium carbonate precipitating reagent to stirring pool is granulated, and sufficiently reacts with raw water,
Newly-generated calcium carbonate is set constantly in the calcium carbonate seed surface deposition added, to form the closely knit crystal grain of big partial size and quickly sink
It forms sediment to stirring pool bottom is granulated, removes most calcium and magnesium ion；Unprecipitated small particle crystal grain enters film with supernatant
Separate tank, and the hydrolyzed reaction product with molysite, form the floc particle object of size, separate laggard one through hollow fiber ultrafiltration membrane
Step removal calcium and magnesium ion, is greatly lowered the hardness of water outlet.
Detailed description of the invention
Fig. 1 is the experimental rig flow chart of the utility model.
In figure: 1- intake pump；2- sodium carbonate adds pump；3- sodium carbonate fluid reservoir；4- is granulated stirring pool；5- blender；6-
Intermediate lift pump；7- iron chloride adds pump；8- iron chloride fluid reservoir；9- UF membrane pond；10- hollow-fibre membrane；11- air blower；
12- water outlet pump；13- hydrochloric acid adds pump；14- hydrochloric acid fluid reservoir；15- pipeline static mixer；16- liquidometer.
Specific embodiment
The embodiments of the present invention is illustrated below in conjunction with attached drawing.It should be noted that the present embodiment is narration
Property, without being restrictive, the protection scope of the utility model is not limited with this embodiment.
The device of the example of the utility model is shown in attached drawing 1.Granulation stirring pool is stainless steel, and bottom is centrum, 116 ° of cone angle, high
Spend 300mm；Top is cylindrical bodyUF membrane pond is stainless steel, and bottom is centrum, 116 ° of cone angle, high
Spend 400mm；Top is cylindrical bodyEquipped with 4 hollow fiber film assemblies, material is Kynoar,
Nominal pore size is 0.22 μm, and total filter area is 50m2.Device is adopted using programmable controller (PLC) control, fully automatic operation
It is programmed with general technology.The daily continuous operation of device for 24 hours, flow 0.63-0.84m3/ h, membrane separator is using between lasting aeration
Water-out manners of having a rest are discharged 8 minutes in every 10 minutes circulations, sky aeration 2 minutes.
Specific operation process is as follows are as follows: when device starts, disposably adds the carbonic acid prepared in advance to being granulated in stirring pool 4
Calcium crystal seed.Under PLC control, intake pump 1 extracts raw water and enters granulation stirring pool 4, while sodium carbonate adds pump 2 and stores up sodium carbonate
Sodium carbonate in medicinal cupping 3, which is added, is granulated stirring pool 4, and blender 5 continuously stirs, and is sufficiently mixed water, crystal seed and sodium carbonate simultaneously anti-
It answers；It staticly settles after a certain period of time, large-size particles object is deposited to the bottom for being granulated stirring pool 4, unprecipitated small size particle
Object enters UF membrane pond 9 by intermediate lift pump 6 with supernatant；Iron chloride adds pump 7 for the iron chloride in iron chloride medicine storing pot 8
UF membrane pond 9 is added, reacts to form bulky grain with the little particle in supernatant, is taken out through the separation of hollow-fibre membrane 10, water outlet pump 12
It is discharged after suction, while hydrochloric acid adds pump 13 for the hydrochloric acid in hydrochloric acid medicine storing pot 14 by pipeline static mixer 15 and UF membrane
The pH value that pond 9 is discharged, is allowed to meet the requirement of " standards for drinking water quality " (GB5749-2006).Air blower 11 divides to film
From 9 continuous aeration of pond, to slow down the pollution of hollow-fibre membrane.Liquidometer 16 is for controlling intake pump 1, intermediate lift pump 6 and going out
The start and stop of water pump 12.
Embodiment one
The flow of device is 0.63m3/ h, granulation stirring pool stirring intensity G value are 556s-1, the UF membrane pond residence time is
35min, raw water calcium ion concentration are 36mg/L, and total hardness is (with CaCO3Meter) it is 140mg/L.It is stirred when experiment starting to granulation
Pond adds the calcium carbonate crystal seed that 1000mg/L is prepared in advance, and sodium carbonate dosage is 1000mg/L, iron chloride dosage in experiment
(with Fe3+Meter) it is 3.5mg/L, 20min, quiet heavy 15min are stirred, water outlet calcium ion concentration average value is 0.91mg/L, removal rate
It is 97.5%；Total hardness average value is 22.03mg/L, removal rate 84.3%.
Embodiment two
The flow of device is 0.84m3/ h, granulation stirring pool stirring intensity G value are 556s-1, the UF membrane pond residence time is
30min, raw water calcium ion concentration are 32mg/L, and hardness is (with CaCO3Meter) it is 130mg/L.To granulation stirring pool when experiment starting
Add the calcium carbonate crystal seed that 500mg/L is prepared in advance, in experiment sodium carbonate dosage be 1000mg/L, iron chloride dosage (with
Fe3+Meter) it is 3.5mg/L, 15min, quiet heavy 10min are stirred, water outlet calcium ion concentration average value is 1.14mg/L, and removal rate is
96.5%；Total hardness average value is 23.07mg/L, removal rate 82.3%.After experiment, crystal grain average value by
32.42 μm increase to 142.00 μm.
Embodiment three
The flow of device is 0.63m3/ h, granulation stirring pool stirring intensity G value are 416s-1, the UF membrane pond residence time is
35min, raw water calcium ion concentration are 40mg/L, and hardness is (with CaCO3Meter) it is 140mg/L.To granulation stirring pool when experiment starting
Add the calcium carbonate crystal seed that 400mg/L is prepared in advance, in experiment sodium carbonate dosage be 1000mg/L, iron chloride dosage (with
Fe3+Meter) it is 3.5mg/L, 20min, quiet heavy 15min are stirred, water outlet calcium ion concentration average value is 1.16mg/L, and removal rate is
97.1%；Total hardness average value is 21.20mg/L, removal rate 84.9%.
Example IV
The flow of device is 0.84m3/ h, granulation stirring pool stirring intensity G value are 416s-1, the UF membrane pond residence time is
30min, raw water calcium ion concentration are 34mg/L, and hardness is (with CaCO3Meter) it is 130mg/L.To granulation stirring pool when experiment starting
Add the calcium carbonate crystal seed that 400mg/L is prepared in advance, in experiment sodium carbonate dosage be 1000mg/L, iron chloride dosage (with
Fe3+Meter) it is 3.5mg/L, 15min, quiet heavy 10min are stirred, water outlet calcium ion concentration average value is 1.07mg/L, and removal rate is
96.9%；Total hardness average value is 22.15mg/L, removal rate 83.0%.After experiment, crystal grain is increased by 32.66 μm
Greatly to 128.19 μm.
Claims (5)
1. the processing unit of hardness in multistep combined removal water, including raw water feed pipe, which is characterized in that the raw water feed pipe
It is connected to the water inlet for being granulated stirring pool top through intake pump, is granulated the supernatant pipeline of stirring pool through intermediate lift pump junctional membrane
The water inlet on separate tank top, the hollow-fibre membrane inside UF membrane pond are connect through outlet pipe with water outlet pump；Precipitating reagent adds pump
The feeding opening for being granulated stirring pool top is connected by chemical feed pipe；Coagulant dosage pump passes through chemical feed pipe junctional membrane separate tank top
Feeding opening；It is granulated stirring pool and blender is housed；The air hose of air blower junctional membrane separation bottom of pond portion；Hydrochloric acid adds pump and passes through dosing
Pipe and pipe-line mixer junctional membrane separate tank outlet pipe；Liquidometer is respectively mounted in granulation stirring pool and UF membrane pond.
2. the processing unit of hardness in multistep combined removal water according to claim 1, which is characterized in that the granulation is stirred
It mixes pond and UF membrane pond is both made of cylinder and circular cone two parts.
3. the processing unit of hardness in multistep combined removal water according to claim 1, which is characterized in that the granulation is stirred
Mixing the product ratio that pond cone angle is 116 °, wherein cylinder and tapered segment is 12:1.
4. the processing unit of hardness in multistep combined removal water according to claim 1, which is characterized in that the UF membrane
Pond cone angle is the product of 112 °, wherein cylinder and tapered segment than being 16:1.
5. the processing unit of hardness in multistep combined removal water according to claim 1, which is characterized in that the hollow fibre
Tieing up film is microfiltration membranes or ultrafiltration membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821657316.8U CN209338257U (en) | 2018-10-12 | 2018-10-12 | The processing unit of hardness in multistep combined removal water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821657316.8U CN209338257U (en) | 2018-10-12 | 2018-10-12 | The processing unit of hardness in multistep combined removal water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209338257U true CN209338257U (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821657316.8U Expired - Fee Related CN209338257U (en) | 2018-10-12 | 2018-10-12 | The processing unit of hardness in multistep combined removal water |
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| Country | Link |
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2018
- 2018-10-12 CN CN201821657316.8U patent/CN209338257U/en not_active Expired - Fee Related
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| 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: 20190903 Termination date: 20201012 |