CN103028278A - Method for optimization selection of water treatment filter material - Google Patents
Method for optimization selection of water treatment filter material Download PDFInfo
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- CN103028278A CN103028278A CN2011102947394A CN201110294739A CN103028278A CN 103028278 A CN103028278 A CN 103028278A CN 2011102947394 A CN2011102947394 A CN 2011102947394A CN 201110294739 A CN201110294739 A CN 201110294739A CN 103028278 A CN103028278 A CN 103028278A
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Abstract
The present invention belongs to the technical field of water treatment of environmental protection, and particularly relates to a method for optimization selection of water treatment filter material. The method of the present invention uses a water treatment filter material optimization selection apparatus to select the filter material, including filtering water by a filtration column, real-time monitoring the water quality, and backwashing the filtration column. The water treatment filter material optimization selection apparatus includes two parallel filtration columns, real-time water quality monitors matched with each filtration column, and a backwash device matched with each filtration column. A particle counter and a turbidity meter are used for real-time monitoring of turbidity and particulate removal law of different filter materials before and after filtration. The performance of the filter material is determined according to particles and turbidity of the water unitedly. Therefore the problem of optimization selection of filter material for filters is solved. The method for optimization selection of water treatment filter material is suitable for selection of filter materials in new construction and reconstruction projects of water treatment plants, and is also suitable for filter material selection in the wastewater regeneration field. The method is simple in operation, and reliable in results, and has strong operability.
Description
Technical field
The invention belongs to the water-treatment technology field of environmental protection, relate in particular to the method for the preferred filtrate of a kind of water treatment.
Background technology
In the filtration link of water treatment, the performance of filtrate directly affects the filter efficiency in filter tank and the water quality of the rear water of filter.At present, the selection of filter relies on experience usually in the domestic water processing procedure, occurs easily the filter tank water outlet in the practical operation and does not reach the phenomenons such as re-set target, owing to be difficult to change filtrate, only have by adjusting other operational factors and optimize and revise, can't satisfy the needs of high-quality water outlet.When the filter tank laying filtering material of newly-built water factory or built water factory need to change filtrate, whether selected media performance reaches designing requirement needed checking, can't carry out quantitative experiment owing to lacking effective filtrate method for optimizing and device.
The present invention is preferred in the filtrate that filters link with particle and turbidity coupling.For a long time, turbidity is always as the important parameter of filtering rear water quality monitoring, it has reflected the overall pure and impure degree of water body, comprise various particles and colloidal composition, when water quality is limpider or in the situation such as the turbidity of water very low (as being lower than 0.1NTU), little shape composition in the water is difficult to be embodied by turbidity value." drinking water sanitary standard " of new edition in 2007 increased biological indicators such as micron-sized " two worms " (Cryptosporidium and giardia lamblia stiles), and conventional turbidity index can't satisfy new standard to the requirement of water quality.In addition, day by day variation along with source water, unicellular or many cells microfauna detects in some link of water factory more and more, even also is found in output water, need to estimate by more instrument evaluations such as the strainability in filter tank and filtration parameters.The particle counting method distributes by particle quantity and the particle diameter of measuring in the water, the water quality of water after the common evaluation of being combined with turbidity is again filtered, can overcome the uncertainty of turbidity, accurately characterize filter effect and the rear particle water thing regularity of distribution of filter in filter tank, its result has without hysteresis quality and the high characteristics of the degree of accuracy.Turbidity and particle counting method are united for the filtrate that filters link preferred, can hold on the one hand the strainability of water to be filtered, can realize on the other hand best filtered water quality, guarantee water quality safety.
Summary of the invention
The object of the present invention is to provide the method for the preferred filter of a kind of water treatment, utilize turbidity and the particle removal of the different media filtrations with the transmissometer Real-Time Monitoring of grain count instrument front and back, granule number and turbidity according to water outlet are united the performance of judging filtrate, solve the preferred problem of filter.Filtrate method for optimizing of the present invention is applicable to the selection of filter in the newly-built and reconstruction project of water factory, and the filter material that also is applicable to sewage deep regeneration field is preferred.Method of operating is simple, and reliable results has very strong operability.
The method of the preferred filtrate of water treatment of the present invention for the device that adopts the preferred filtrate of water treatment carries out preferably filtrate, comprises the filter post filtration of water, the Real-Time Monitoring of water quality and three steps of backwash of filter post.
The device of the preferred filtrate of described water treatment, comprise two in parallel filter posts, with the water quality real-time monitor of every filter column kit and with the filter post back flushing device of every filter column kit.
Described filter column bottom is provided with base, from top to bottom be provided with successively water inlet and overfall on the top sidewall of described filter post, the bottom sidewall of described filter post is provided with total delivery port and backwash mouth, from bottom to top be provided with successively filter plate, coarse sand supporting layer and filter material layer in the described filter post, be provided with on the filter post sidewall of filter material layer and be provided with a plurality of probe tubes from top to bottom, the bottom that is provided with the filter post sidewall of filter material layer is provided with for the sand extracting port of changing filtrate; Described water inlet is connected with total water inlet with the valve of flowmeter, control flow successively through pipeline; Described total water inlet place is provided with probe tube.Filter post of the present invention is processed by lucite, plastic material or stainless steel, and the sand extracting port in the filter post is used for changing filtrate.
Better, described total water inlet, total delivery port and each probe tube place are equipped with supporting valve.
Described water quality real-time monitor comprises grain count instrument and transmissometer, and described grain count instrument and transmissometer are all with total water inlet, water inlet, each probe tube, total delivery port, the backwash mouth of filter post and overfall is detachable is connected.
Described filter post back flushing device comprises scuttlebutt and the backwashing pump that connects through pipeline, the other end of described backwashing pump connects the first port of a three-way pipeline, the second port of three-way pipeline is connected with the backwash mouth of a filter post through pipeline, the 3rd port of three-way pipeline is connected through the backwash mouth of pipeline with another root filter post, and total delivery port of described every filter post all is connected with scuttlebutt through pipeline.Back washing strength of the present invention can be regulated by backwashing pump.
Better, described backwash mouth place is provided with back flush valves.
Grain count instrument of the present invention and transmissometer can be selected on-line instrument or portable instrument as required, the water inlet end of grain count instrument can freely link to each other with the backwashing water of water inlet sample tap, each sampling nozzle, effluent pipe mouth, backwash mouth and the overfall of filtering post with the water inlet end of transmissometer, monitors as required the change of water quality of diverse location.According to monitoring requirements, grain count instrument and transmissometer can be directly link to each other with each intake-outlet of filter post or each probe tube or sample tap, and the reading of instrument display is respectively real-time granule number and turbidity.
The present invention also provides a kind of filtrate method for optimizing of water treatment, utilizes the monitoring of particle counting device and transmissometer to filter turbidity and the particle quantity of front and back, weighs the strainability of filtrate, optimizes and selects filtrate.
The method of the preferred filtrate of water treatment of the present invention adopts the device of the preferred filtrate of above-mentioned water treatment that filtrate is carried out preferably, comprises the filter post filtration of water, the Real-Time Monitoring of water quality and three steps of backwash of filter post; Its concrete steps are as follows:
The filter post of described water filters in the filter post and carries out, during filtration, first filtrate to be selected is routed on the coarse sand supporting layer in the filter post, water was entered by total water inlet after coagulation was heavy, successively behind the valve through controlling flowmeter, the flowmeter, water inlet by the filter post filters through filtrate, supporting layer and filter plate from top to down successively, and is flowed out by total delivery port of filter post, and filtrate finally enters scuttlebutt.
Filter post back flushing device is adopted in the backwash of described filter post, during backwash, opens first the scuttlebutt valve, and the filtrate that adopts again backwash pump will be collected in the scuttlebutt carries out backwash to the filter post.
Adopt respectively the water quality real-time monitor to carry out the Real-Time Monitoring of water quality in the backwash process of the filter post filter process of described water and filter post, during the Real-Time Monitoring of water quality, measure the water quality condition at total water inlet, water inlet, each probe tube, total delivery port, backwash mouth and overfall place by grain count instrument and transmissometer, distribute the strainability of filtrate in two filter posts of comparison according to the particle diameter of real-time granule number, turbidity Changing Pattern and filtrate, determine the filtrate of optimum grain-diameter and the laying height of filtrate.
The method of the preferred filtrate of water treatment of the present invention, media filtration carries out in simulation filter post, two filter posts are connected in parallel, every filter post evenly arranges several probe tubes and a sand extracting port, water outlet behind the coagulating sedimentation is respectively by entering two Filter columns behind the flowmeter adjust flux, then from top to bottom by filter material layer, the filter post is established total delivery port, is controlled by valve.Probe tube is used for collecting the water outlet of filtering layer diverse location, and Particle counter and transmissometer are for detection of water inlet and each filtering layer water outlet granule number and the turbidity of filter post, and sand extracting port removes the original filtrate of filter post when being used for changing filtrate.Be provided with coarse sand supporting layer and filter plate in the filter post, prevent that filtrate to be detected runs off.
Monitoring instrument is grain count instrument and transmissometer in the method for the preferred filtrate of water treatment of the present invention, and the reading of each instrument display is real-time granule number and real-time turbidity.
Backwash is the water punching in the method for the preferred filtrate of water treatment of the present invention, is provided with backwashing pump, and the gas punching also can be set as required.Back purge system is set is convenient on the one hand clean filtrate, can determine best backwashing parameters by the water quality of grain count instrument and transmissometer monitoring backwashing water on the other hand.Backwashing water is from scuttlebutt.The backwash mouth is established in the filter column bottom, and by the backwash valve gate control, scuttlebutt is connected pvc pipe with back flush valves and connects.
The present invention is a kind of novel water treatment filter material method for optimizing, and the effect of invention is positive and obvious, has solved the problem of water factory's selection filtrate, has practicality.This filtrate optimum decision system is simple to operate, and dependable performance can be widely used in the preferred of filter in the newly-built and extension project of waterworks and regeneration effluent engineering.
Description of drawings
Fig. 1 is the device schematic diagram of the preferred filtrate of water treatment of the present invention
The specific embodiment
Further set forth the present invention below in conjunction with specific embodiment, should be understood that these embodiment only are used for explanation the present invention and are not used in restriction protection scope of the present invention.
The device of the preferred filtrate of water treatment of present embodiment, as shown in Figure 1, comprise two in parallel filter posts 1, with the water quality real-time monitor 2 of every filter column kit and with the filter post back flushing device 3 of every filter column kit.
Described filter post 1 bottom is provided with base 11, from top to bottom be provided with successively water inlet 18 and overfall 19 on the top sidewall of described filter post, the bottom sidewall of described filter post is provided with total delivery port 13 and backwash mouth 12, from bottom to top be provided with successively filter plate 14, coarse sand supporting layer 15 and filter material layer 17 in the described filter post, be provided with on the filter post sidewall of filter material layer and be provided with a plurality of probe tubes 171 from top to bottom, the bottom that is provided with the filter post sidewall of filter material layer is provided with for the sand extracting port 16 of changing filtrate; Described water inlet 18 is connected with total water inlet with the valve 112 of flowmeter 111, control flow successively through pipeline and is connected; Described total water inlet 113 places are provided with probe tube 110.Above-mentioned filter post is processed by lucite, plastic material or stainless steel, and the sand extracting port in the filter post is used for changing filtrate.
Better, described total water inlet 113, total delivery port 13 and each probe tube 171,110 places are equipped with supporting valve.
Described water quality real-time monitor 2 comprises grain count instrument 21 and transmissometer 22, and described grain count instrument 21 is connected with transmissometer all total water inlet 113, water inlet 16, each probe tube 171,110, total delivery port 13, backwash mouth 12 and 19 detachable connections of overfall with the filter post.
Described filter post back flushing device 3 comprises scuttlebutt 31 and the backwashing pump 32 that connects through pipeline, the other end of described backwashing pump 32 connects the first port of a three-way pipeline, the second port of three-way pipeline is connected with the backwash mouth of a filter post through pipeline, the 3rd port of three-way pipeline is connected through the backwash mouth of pipeline with another root filter post, and total delivery port 13 of described every filter post all is connected with scuttlebutt 31 through pipeline.The back washing strength of present embodiment can be regulated by backwashing pump.
Better, described backwash mouth 12 places are provided with back flush valves.
The grain count instrument 21 of present embodiment and transmissometer 22 can be selected on-line instrument or portable instrument as required, the water inlet end of grain count instrument can freely link to each other with the backwashing water of water inlet sample tap, each sampling nozzle, effluent pipe mouth, backwash mouth and the overfall of filtering post with the water inlet end of transmissometer, monitors as required the change of water quality of diverse location.According to monitoring requirements, grain count instrument and transmissometer can be directly link to each other with each intake-outlet of filter post or each probe tube or sample tap, and the reading of instrument display is respectively real-time granule number and turbidity.
The method of the preferred filtrate of water treatment of present embodiment adopts the device of the preferred filtrate of above-mentioned water treatment that filtrate is carried out preferably, comprises the filter post filtration of water, the Real-Time Monitoring of water quality and three steps of backwash of filter post.
The filter post of described water filters in filter post 1 and carries out, during filtration, first filtrate to be selected is routed on the coarse sand supporting layer 15 in the filter post, water was entered by total water inlet 113 after coagulation was heavy, successively behind the valve 112 through controlling flowmeter, the flowmeter 111, water inlet 18 by the filter post filters through filtrate 17, supporting layer 15 and filter plate 14 from top to down successively, and is flowed out by total delivery port 13 of filter post, and filtrate finally enters scuttlebutt 31.
Filter post back flushing device is adopted in the backwash of described filter post, during backwash, opens first the scuttlebutt valve, and the filtrate that adopts again backwash pump 32 will be collected in the scuttlebutt 31 carries out backwash to filter post 1.
Adopt respectively water quality real-time monitor 2 to carry out the Real-Time Monitoring of water quality in the backwash process of the filter post filter process of described water and filter post, during the Real-Time Monitoring of water quality, measure the water quality condition at total water inlet, water inlet, each probe tube, total delivery port, backwash mouth and overfall place by grain count instrument 21 and transmissometer 22, distribute the strainability of filtrate in two filter posts of comparison according to the particle diameter of real-time granule number, turbidity Changing Pattern and filtrate, determine the filtrate of optimum grain-diameter and the laying height of filtrate.
Water outlet behind the coagulating sedimentation is determined to enter two filter posts by water inlet 18 respectively behind the flow through flowmeter 111, can open or close as required valve uses a certain filter post or uses simultaneously two filter posts, preferably two kinds of filtrates can be put into respectively two filter posts such as two kinds of filtrates and filter simultaneously, carry out Performance Ratio; A kind of optimization of filtrate operational factor then can be finished in a filter post.Two filter post flows can be regulated by flowmeter.Water inlet manifold is established probe tube 110, and probe tube 110 can link to each other with real-time monitoring instrument 2, monitoring influent quality parameter.
Water inlet is from top to bottom successively by filter material layer 17, supporting layer 15 and filter plate 14, the filtrate interval of filter post is evenly established several sampling nozzle 171, sample tap can directly link to each other with real-time monitoring instrument, delivery turbidity and the particle quantity of filtering layer of monitoring different-thickness, the laying depth of determining filtrate according to delivery turbidity and the granule number of different-thickness.Total delivery ports 13 of two filter posts all can directly link to each other with monitoring instrument, monitor each filter post water outlet granule number and turbidity, and then preferably filtrate kind, particle diameter etc.
Backwash is the water punching in this method, is provided with backwashing pump 32, and the gas punching also can be set as required.Back purge system is set is convenient on the one hand clean filtrate, the backwash water outlet is flowed out by overfall 19 on the other hand, overfall 19 can directly link to each other with monitoring instrument, can determine best backwashing parameters by the water quality of particle instrument and transmissometer monitoring backwashing water, comprise back washing strength, backwashing time etc.Backwashing water is from scuttlebutt 31, and scuttlebutt 31 is connected the back flush valves at place and is connected by pipeline with the backwash mouth.
Monitoring instrument is grain count instrument 21 and transmissometer 22 in this method, grain count instrument and transmissometer are portable or on-line instrument, on connected mode, can adopt the front and back series connection of a device, be used for process parameter optimizing according to the removal of turbidity and particle, also can in parallelly judge synchronously the preferred of two kinds of filtrate materials, particle diameter and profiles (such as uniformity coefficient etc.).According to monitoring requirements, the particle instrument can directly link to each other with each sampling nozzle 171, the overflow mouth of pipe 19 with the probe tube 110 of the total water inlet of filtering post, total effluent pipe mouth 13 with transmissometer, and the reading of instrument display is real-time granule number and turbidity.
Embodiment 2
The preferred process of filtrate:
Adopt embodiment 1 the preferred filtrate of water treatment device and according to the method for the preferred filtrate of water treatment of embodiment 1 1# and 2# filtrate are carried out preferably.
For investigating the strainability difference of two kinds of filtrates, under identical working condition, compare the filter effect of two kinds of filtrates, 1# is fine sand, and particle diameter is 0.7～0.9mm, and 2# is coarse sand, and particle diameter is 0.9～1.1mm.Filter post water inlet be the water outlet of certain waterworks coagulative precipitation tank, and influent turbidity is at 1.0～2.0NTU, and the granule number greater than 2 μ m of intaking is at 4000～8000/mL.The filter post rate of filtration of two kinds of filtrates is identical, and scope is 8～12m/h, and two Inlet and outlet water particle sum, particle diameters distribution and the turbidity of filtering posts have been carried out comparative analysis.
The preferred result of filtrate:
The water outlet particle quantity of 1# fine sand and turbidity are all lower by 10～30% than 2#, and water quality is more stable, and fluctuation is less.It is faster than 2# that but the loss of flood peak of 1# fine sand increases, and the cycle of operation is short, and backwash is frequent.Although the filter effect of coarse sand is not as fine sand, the effluent quality of coarse sand still can satisfy water factory's filter tank water outlet requirement, and the cycle of operation is long, is difficult for running sand during air-water flushing.Actual needs equal angles according to water factory is considered, has finally selected the 2# coarse sand to filter as water factory and has used filtrate.
Claims (8)
1. the method for the preferred filtrate of water treatment for the device that adopts the preferred filtrate of water treatment carries out preferably filtrate, comprises the filter post filtration of water, the Real-Time Monitoring of water quality and three steps of backwash of filter post; The device of the preferred filtrate of described water treatment comprise two in parallel filter posts, with the water quality real-time monitor of every filter column kit and with the filter post back flushing device of every filter column kit.
2. the method for the preferred filtrate of water treatment as claimed in claim 1, it is characterized in that, described filter column bottom is provided with base, from top to bottom be provided with successively water inlet and overfall on the top sidewall of described filter post, the bottom sidewall of described filter post is provided with total delivery port and backwash mouth, from bottom to top be provided with successively filter plate, coarse sand supporting layer and filter material layer in the described filter post, be provided with on the filter post sidewall of filter material layer and be provided with a plurality of probe tubes from top to bottom, the bottom that is provided with the filter post sidewall of filter material layer is provided with for the sand extracting port of changing filtrate; Described water inlet is connected with total water inlet with the valve of flowmeter, control flow successively through pipeline; Described total water inlet place is provided with probe tube.
3. the method for the preferred filtrate of water treatment as claimed in claim 2 is characterized in that, described filter post is processed by lucite, plastic material or stainless steel.
4. the method for the preferred filtrate of water treatment as claimed in claim 2 is characterized in that, described total water inlet, total delivery port, each probe tube and backwash mouth place are equipped with supporting valve.
5. the method for the preferred filtrate of water treatment as claimed in claim 1, it is characterized in that, described water quality real-time monitor comprises grain count instrument and transmissometer, and described grain count instrument and transmissometer are all with total water inlet, water inlet, each probe tube, total delivery port, the backwash mouth of filter post and overfall is detachable is connected.
6. the method for the preferred filtrate of water treatment as claimed in claim 1, it is characterized in that, described filter post back flushing device comprises scuttlebutt and the backwashing pump that connects through pipeline, the other end of described backwashing pump connects the first port of a three-way pipeline, the second port of three-way pipeline is connected with the backwash mouth of a filter post through pipeline, the 3rd port of three-way pipeline is connected through the backwash mouth of pipeline with another root filter post, and total delivery port of described every filter post all is connected with scuttlebutt through pipeline.
7. the method for the preferred filtrate of water treatment as claimed in claim 1 is characterized in that, specifically comprises the steps:
The filter post of described water filters in the filter post and carries out, during filtration, first filtrate to be selected is routed on the coarse sand supporting layer in the filter post, water was entered by total water inlet after coagulation was heavy, successively behind the valve through controlling flowmeter, the flowmeter, water inlet by the filter post filters through filtrate, supporting layer and filter plate from top to down successively, and is flowed out by total delivery port of filter post, and filtrate finally enters scuttlebutt;
Filter post back flushing device is adopted in the backwash of described filter post, during backwash, opens first the scuttlebutt valve, and the filtrate that adopts again backwash pump will be collected in the scuttlebutt carries out backwash to the filter post;
Adopt respectively the water quality real-time monitor to carry out the Real-Time Monitoring of water quality in the backwash process of the filter post filter process of described water and filter post, during the Real-Time Monitoring of water quality, measure the water quality condition at total water inlet, water inlet, each probe tube, total delivery port, backwash mouth and overfall place by grain count instrument and transmissometer, distribute the strainability of filtrate in two filter posts of comparison according to the particle diameter of real-time granule number, turbidity Changing Pattern and filtrate, determine the filtrate of optimum grain-diameter and the laying height of filtrate.The device of the preferred filtrate of water treatment is characterized in that, comprise two in parallel filter posts, with the water quality real-time monitor of every filter column kit and with the filter post back flushing device of every filter column kit.
8. it is preferred to be used for the regenerate filtrate in field of the selection of newly-built and reconstruction project filter of water factory and sewage deep such as the method for the preferred filtrate of the arbitrary described water treatment of claim 1-7.
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| CN2011102947394A CN103028278A (en) | 2011-09-29 | 2011-09-29 | Method for optimization selection of water treatment filter material |
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| CN107219162A (en) * | 2017-06-19 | 2017-09-29 | 深圳安吉尔饮水产业集团有限公司 | The method for detecting filter strainability |
| CN107860873A (en) * | 2017-12-18 | 2018-03-30 | 王培琴 | Indoor more filtrate combination purification quality test of water systems |
| CN108072599A (en) * | 2017-12-18 | 2018-05-25 | 王培琴 | A kind of filtrate purifying property experimental rig for purification of water quality |
| CN110052078A (en) * | 2019-05-30 | 2019-07-26 | 宁夏尚禹节水科技有限公司 | Compound automatic backwashing filter and filter method |
| CN110115871A (en) * | 2019-05-24 | 2019-08-13 | 四川宜科纯水设备有限公司 | A kind of building block system large capacity filter column component, large capacity water purifier |
| CN110186830A (en) * | 2019-06-03 | 2019-08-30 | 上海理工大学 | Laboratory dyeing waste water removes antimony filtrate test device and method |
| CN111077052A (en) * | 2019-12-12 | 2020-04-28 | 中国石油化工股份有限公司 | Performance evaluation device and method for oil field water injection filtering material |
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| CN111077052A (en) * | 2019-12-12 | 2020-04-28 | 中国石油化工股份有限公司 | Performance evaluation device and method for oil field water injection filtering material |
| CN111077052B (en) * | 2019-12-12 | 2022-05-27 | 中国石油化工股份有限公司 | Performance evaluation device and method for oil field water injection filtering material |
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Application publication date: 20130410 |