CN2870952Y - Three-stage industrial waste water cryogenic pretreatment filter - Google Patents
Three-stage industrial waste water cryogenic pretreatment filter Download PDFInfo
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- CN2870952Y CN2870952Y CN 200520120713 CN200520120713U CN2870952Y CN 2870952 Y CN2870952 Y CN 2870952Y CN 200520120713 CN200520120713 CN 200520120713 CN 200520120713 U CN200520120713 U CN 200520120713U CN 2870952 Y CN2870952 Y CN 2870952Y
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Abstract
The utility model discloses a safety reliable impact electric drill, which comprises a primary and secondary filter with the filtration medium of two-layer and different filtration pore diameters, wherein the water inlet of the primary filter is communicated with the waste water input port through a first valve, the filtration effluent is outputted to the secondary filter through a second valve and a fourth valve, the waste water input port is also communicated with a delivery outlet of the second valve through a third valve; and the filtration effluent of the secondary filter is outputted to an outlet of the pre-treated filtration equipment through a fifth valve and the delivery outlet of the second valve can be communicated with the outlet of the pre-treated device through a sixth valve. The primary and secondary filters of the utility model are usually in serial connection. When one filter is backwashed, the other one can conduct filtration normally. When the filtration medium which becomes loose due to backwash is put into operation again, it can recover automatically to the compaction state with the help of the filtration pressure of the waste water and the pre-treated filtration effects are quite good.
Description
Technical field
The utility model relates to a kind of pretreatment filtering device that tertiary grade industrial waste water is carried out advanced treating.
Background technology
Ripe, high-quality, water technology not only comprises stable efficiently, high-quality effluent characteristics, also comprise the filtration consumptive material of trying one's best high service life of equipment and trying one's best low, to reduce the operating cost of water treatment, concrete characteristics at different quality need design different process for purifying usually, choose different filter mediums, wherein most important to the preliminary treatment of former water, be directly connected to the quality and the efficient of entire process system, such as electroplating or board wastewater, generally need pass through barrier successively, after regulating reservoir carries out the homogenizing processing, reaction tank and sedimentation basin reinject, in reaction tank, dose an amount of flocculant and flocculation aid, and carry out pH and adjust, enter sedimentation basin, the gained supernatant enters clear water reserviors, can reach country and the local level's emission standards this moment.COD≤90mg/L, suspension≤60mg/L, pH 6～9.
China's freshwater resources relatively lack, and the water for industrial use of above-mentioned advanced treatment of industrial waste water for reusing, are the best approach that solves shortage of water resources, also are the important channels that guarantees China's economic construction sustainable development.
But this treatment fluid can not satisfy the requirement of reuse, and therefore consumption or the wasting phenomenon to water resource still do not solve.Because the treatment fluid of plating or board wastewater produces a large amount of colloidal substances in the flocculation sediment process, contain more deliquescent metal ion and macromolecular compound, when using counter-infiltration (RO) film isolation technics to carry out advanced treating, cause the dirt of reverse-osmosis membrane element stifled especially easily, must carry out preliminary treatment effectively treatment fluid.
At present, Jing Dian pretreating process generally comprises: " sand filter → char filter → (antisludging agent) protector ".Former water (being the tertiary treatment industrial wastewater) enters active carbon filter by raw water pump and adsorbs after the quartz sand filtration device filters, enter security personnel's filter after adding antisludging agent, afterwards again by high-pressure hydraulic pump from middle water tank input counter-infiltration system.As mentioned above; pretreated process efficiency is to the service life of whole system; the water outlet influential effect is very big; because suspension that particle is bigger and colloidal substance etc. are all removed at pretreatment stage basically; in the use of equipment; continuous input along with treatment fluid; the very fast appearance of sandfiltration pot is stopped up; the carbon filter tank then lost efficacy owing to charcoal absorption is saturated; must carry out backwash (regeneration) to aforementioned pre-processing device; to guarantee the pretreated water inlet requirement that water quality standard satisfies counter-infiltration all the time that goes out; because existing quartz sand filtration device and active carbon filter all are cascaded; must shut down and carry out backwash; just can restart this system after the end subject to backwash, tend to reduce the service efficiency and the overall efficiency of counter-infiltration system like this.In addition because the time to the pretreatment filtering device backwash, the flow direction of clear water is opposite with the former current direction that is filtered, when backwash, become like this and loosen with regard to the filtering layer that makes in the pretreatment filtering device compacting originally, reactivate this filter and will reduce effect, therefore be necessary the concrete formation of pretreatment filtering device is further improved raw water filtration.
Summary of the invention
For overcoming the defective of above-mentioned prior art, technical problem to be solved in the utility model be intended to provide a kind of still can be continuously when backwash, high-effectly to the pretreatment filtering device of tertiary grade industrial waste water advanced treating.
For solving the problems of the technologies described above, the utility model proposes a kind of pretreatment filtering device of tertiary grade industrial waste water advanced treating, comprise the grade one filter and the secondary filter that all are built-in with filter medium, described two filters are provided with counter-flushing pipeline respectively; The water inlet of described grade one filter communicates with the waste water input port by first valve, the filtration water outlet of grade one filter can be through the delivery outlet output of second valve, and it is characterized in that: described waste water input port also communicates by the delivery outlet of the 3rd valve with described second valve; The water inlet of described secondary filter communicates by the delivery outlet of the 4th valve with described second valve, the filtration water outlet of secondary filter then outputs to the delivery port of described pretreatment unit through the 5th valve, also communicate by the 6th valve between the delivery outlet of described second valve and the delivery port of described pretreatment filtering device.
Further, above-mentioned each filter is two medium filters, and the pore size filter that wherein is positioned at the filter medium on upper strata is slightly larger than the pore size filter of the filter medium that is positioned at lower floor.
The above-mentioned filter medium that is positioned at the upper strata can select for use anthracite as filter medium, and the filter medium that is positioned at lower floor can select for use quartz sand as filter medium.
The pore size filter of the filter medium in the aforementioned grade one filter is slightly larger than the pore size filter of the filter medium of the relevant position in the secondary filter.
After adopting said structure, can be by the control folding of each valve, when normal filtration, make waste water to realize preliminary treatment preferably successively via effectively being filtered behind the two medium filters of the one-level that is serially connected, the two medium filters of secondary to waste water; And when the filter medium in one of them filter needs backwash, then can it be carried out separately respectively, another filter still can carry out incessantly, normally filter the waste water of importing independently; The filter medium that becomes loose relatively because of anti-cleaning process also can be when coming into operation again, filter pressure by waste water automatically restores to densification, compacted condition, and can obviously not influence pretreated filter effect, device of the present utility model is specially adapted to reach the plating or the board wastewater of country and the local level's discharge standard.
Description of drawings
Fig. 1 is to use the water treatment system structure diagram of pretreatment filtering device described in the utility model;
Fig. 2 is the mounting structure schematic diagram of pretreatment filtering device described in the utility model;
Fig. 3 is the structural representation of the grade one filter that adopts in the utility model;
Fig. 4 is the structural representation of the secondary filter that adopts in the utility model.
The specific embodiment
With reference to accompanying drawing 1, the utility model mainly is improved in addition at the formation of the pretreatment filtering device of counter-infiltration system, the reverse osmosis film isolation technics has good filtration effect, the effluent characteristics advantages of higher, but feedwater quality is required also relatively stricter, especially do not contain or contain less as far as possible in the water inlet and may cause the fouling of reverse-osmosis membrane element face and flowing water passage dirty stifled particulate matter and colloidal substance, for guaranteeing carrying out smoothly of reverse osmosis process, waste water to the input reverse-osmosis membrane element carries out efficiently, stable, preliminary treatment reliably seems particularly important, for this reason, in a kind of embodiment of the present utility model, used the two medium filters of two-stage that the waste water that will import reverse-osmosis membrane element is carried out preliminary treatment especially, the pore size filter that wherein is positioned at the filter medium on upper strata preferably is larger than the pore size filter of the filter medium that is positioned at lower floor, according to gained water outlet concrete condition, whether decision adds antisludging agent or dispersant, import the row filtration again of security personnel's filter according to common mode then, water outlet is stored in intermediate water tank, as the feed source of reverse osmosis equipment; The water of intermediate water tank is sent into reverse osmosis unit (being each RO among Fig. 1) by high-pressure pump again and is finished osmosis filtration technology, generally speaking, also to have independently chemical cleaning system in the reverse osmosis unit further to handle to exporting dense water, owing to be not concrete improvement of the present utility model, give unnecessary details no longer in detail here.
At reference Fig. 2, in the pretreatment filtering device of tertiary grade industrial waste water advanced treating described in the utility model, comprise that two structures are identical substantially, all be built-in with the grade one filter 1 and the secondary filter 2 of filter medium, these two filters all are respectively arranged with counter-flushing pipeline according to common mode: be attached with backwash water inlet 17 in grade one filter 1 upper water-out position, backwash water be installed before filter medium 18; Similarly, be attached with backwash water inlet 27 in secondary filter 2 upper water-out positions, backwash water outlet 28 is installed before filter medium; Even can be according to shown in Figure 2: backwash water inlet 17 can directly be communicated with between the output and second valve 12 of grade one filter 1, backwash water outlet 18 then directly connection between the input and first valve 11 of grade one filter 1; It is 28 as the same that backwash water on the secondary filter 2 inlet 27, backwash water export.
The backwashing pump 7 that the backwash water entry and exit of each filter generally also will be installed corresponding valve and be used for importing backwash water, being provided with of these valves mainly is to guarantee carrying out smoothly of backwash action, and do not influence, do not interfere the discrepancy of waste water to be filtered when normal filtration.
Usually, filter medium need be placed on the interior supporting layer of filter, this supporting layer can use the relatively large and filter medium that increase gradually of particle directly to substitute, as shown in Figure 3, purpose be the water after filtering can be more successfully from the delivery port output of filter.
The water inlet 10 of grade one filter 1 communicates with waste water input port 9 by first valve 11, the filtration water outlet of grade one filter 1 can be through the delivery outlet output of second valve 12, and aforementioned waste water input port 9 also is connected with the delivery outlet of second valve 12 by the 3rd valve 13; And the water inlet 20 of secondary filter 2 communicates with the delivery outlet of aforementioned second valve 12 by the 4th valve 24, the filtration water outlet of secondary filter 2 is then carried out follow-up interpolation antisludging agent technology through the delivery port 8 that the 5th valve 25 outputs to pretreatment filtering device described in the utility model, meanwhile, also communicate between the delivery port 8 of the delivery outlet of second valve 12 and above-mentioned pretreatment unit by the 6th valve 26.
The pretreatment unit of said structure is when operate as normal, the 3rd valve 13 and the 6th valve 26 are closed, first valve 11, second valve 12, the 4th valve 24 and the 5th valve 25 are opened, waste water is successively via effectively being filtered behind the grade one filter that is chained together, the secondary filter, goes in delivery port 8 is input to the equipment of next operation.
Use after a period of time, such as, when grade one filter need carry out backwash, close first valve 11, second valve 12 and the 6th valve 26, open the 3rd valve 13, the 4th valve 24 and the 5th valve 25, waste water can be successively via the 3rd valve 13, the 4th valve 24 is input in the secondary filter and filters normally, in being input to the equipment of next operation, goes on the 5th valve 25 again, meanwhile, the backwash water of the grade one filter 1 among Fig. 2 goes out, going into valve can stay open, and just can carry out the backwash of common program to the filter medium in the grade one filter during backwashing pump work; In the process of backwash, since the water (flow) direction of backwash water during with normal filtration the water (flow) direction of waste water opposite, therefore, filter medium in the filter can become than original loose the expansion, the filter effect of this filter that comes into operation again after backwash can decrease, if do not prevented to make the preliminary treatment filtering water that certain floating arranged, utilize the utility model then can avoid the generation of this phenomenon substantially, because, again the grade one filter that comes into operation can utilize the drive of waste water current, filter medium in it is returned to original densification automatically again, compacted condition, in this process, the quality of water outlet can be guaranteed by secondary filter, at this moment, the 3rd valve 13 and the 6th valve 26 remain on closed condition, first valve 11, second valve 12, the 4th valve 24 and the 5th valve 25 remain on open mode and get final product.
Similar reason, when secondary filter need carry out backwash, close the 3rd valve 13, the 4th valve 24 and the 5th valve 25, and first valve 11, second valve 12 and the 6th valve 26 remain on open mode, waste water is input in the grade one filter through first valve 11 and filters normally, directly in being input to the equipment of next operation, goes delivery port 8 via second valve 12 and the 6th valve 26 successively again, meanwhile, the backwash water of secondary filter goes out, going into valve can stay open, and just can carry out the backwash of common program to the filter medium in the secondary filter during backwashing pump work; Filter medium in the secondary filter after the backwash can be filtered the automatic compacting of current after coming into operation again, the quality of water outlet can be guaranteed by grade one filter.Two filters can stagger the time, carry out backwash in turn, neither influence the normal preliminary treatment of input waste water is filtered, can also guarantee all the time that the waste water of importing is filtered on the filter bed of at least one compacting, densification, thereby guarantee to have stable, reliable preliminary treatment effluent quality.This advantage seems quite valuable for subsequently osmosis filtration technology, can reduce the consumables cost of subsequent technique greatly, particularly can prolong the service life of osmosis filtration equipment, and economic benefit is quite obvious.
Contain more colloidal substance and deliquescent metal ion at plating or board wastewater, and characteristics such as macromolecular compound content height, the above-mentioned filter medium that is positioned at the upper strata selects for use anthracite as filter medium, the filter medium that is positioned at lower floor selects for use quartz sand as filter medium, replace active carbon filter or quartz sand filtration device, it is thinner to make full use of the anthracite pore size filter, macromolecular compound and colloidal substance are had good characteristics such as filtration efficiently, thus can increase substantially to this waste water through gained after the preliminary treatment only meet the country and the tertiary grade industrial waste water of the local level's discharge standard refilter (being the preliminary treatment filtration) quality in the utility model.
Be not difficult to find out, in the utility model, the I and II filter most of the time is that series connection is communicated with, waste water to input carries out double-filtration, the backwash action of each filter only takies the less time usually, therefore, the pore size filter of the filter medium in the aforementioned grade one filter can be designed to be slightly larger than the pore size filter of the filter medium of the relevant position in the secondary filter, give full play to the reinforcement filter effect of serial connection equipment waste water.In the practice, for the preliminary treatment of plating or board wastewater, wherein, as shown in Figure 3, Figure 4, anthracitic particle diameter is chosen between the 1.0-3.0mm in the grade one filter, and filter bed thickness is between 300～400mm; The particle diameter of quartz sand is chosen between the 0.8-1.6mm, and filter bed thickness is about between 400～500mm, and is generally comparatively suitable; And anthracitic particle diameter is chosen between the 0.6-0.9mm in the secondary filter, the particle diameter of quartz sand is chosen between the 0.35-0.5mm, and effect is better, and the filter bed thickness of its filter bed thickness and grade one filter quite gets final product.
Facts have proved, plating or board wastewater through the two medium filters processing of above-mentioned two-stage, its delivery turbidity is reduced to below the 1.0NTU, sludge density index (SDI)＜4, can satisfy the water inlet requirement of reverse osmosis unit preferably, thereby guarantee long-term, stable, the operation successfully of reverse osmosis unit, economic benefit is quite obvious.
Need to prove; though such scheme mainly be at electroplate or board wastewater behind primary purifying; row carries out advanced treating and the improved pretreatment filtering device that proposes to its tertiary grade industrial waste water again; obviously practice is far above this field; be suitable for too in other field of waste water treatment, will be understood that also within protection domain of the present utility model.
Claims (5)
1. the pretreatment filtering device of a tertiary grade industrial waste water advanced treating comprises the grade one filter and the secondary filter that all are built-in with filter medium, and described two filters are provided with anti-detergent line respectively; The water inlet of described grade one filter communicates with the waste water input port by first valve, the filtration water outlet of grade one filter can be through the delivery outlet output of second valve, and it is characterized in that: described waste water input port also communicates by the delivery outlet of the 3rd valve with described second valve; The water inlet of described secondary filter communicates by the delivery outlet of the 4th valve with described second valve, the filtration water outlet of secondary filter then outputs to the delivery port of described pretreatment filtering device through the 5th valve, also communicate by the 6th valve between the delivery outlet of described second valve and the delivery port of described pretreatment unit.
2. the pretreatment filtering device of tertiary grade industrial waste water advanced treating as claimed in claim 1, it is characterized in that: described each filter is two medium filters, and the pore size filter that wherein is positioned at the filter medium on upper strata is slightly larger than the pore size filter of the filter medium that is positioned at lower floor.
3. the pretreatment filtering device of tertiary grade industrial waste water advanced treating as claimed in claim 2 is characterized in that: the pore size filter of the filter medium in the described grade one filter is slightly larger than the pore size filter of the filter medium of the relevant position in the secondary filter.
4. as the pretreatment filtering device of claim 2 or 3 described tertiary grade industrial waste water advanced treating, it is characterized in that: the described filter medium that is positioned at the upper strata is an anthracite, and the filter medium that is positioned at lower floor is a quartz sand.
5. the pretreatment filtering device of tertiary grade industrial waste water advanced treating as claimed in claim 4 is characterized in that: wherein, anthracitic particle diameter is chosen between the 1.0-3.0mm in the grade one filter, and filter bed thickness is between 300～400mm; The particle diameter of quartz sand is chosen between the 0.8-1.6mm, and filter bed thickness is about between 400～500mm; And anthracitic particle diameter is chosen between the 0.6-0.9mm in the secondary filter, the particle diameter of quartz sand is chosen between the 0.35-0.5mm, and the filter bed thickness of filter bed thickness and grade one filter is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520120713 CN2870952Y (en) | 2005-12-13 | 2005-12-13 | Three-stage industrial waste water cryogenic pretreatment filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520120713 CN2870952Y (en) | 2005-12-13 | 2005-12-13 | Three-stage industrial waste water cryogenic pretreatment filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2870952Y true CN2870952Y (en) | 2007-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520120713 Expired - Lifetime CN2870952Y (en) | 2005-12-13 | 2005-12-13 | Three-stage industrial waste water cryogenic pretreatment filter |
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| Country | Link |
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| CN (1) | CN2870952Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366319C (en) * | 2005-12-13 | 2008-02-06 | 深圳市金达莱环保股份有限公司 | Pretreatment filtering device for three-stage industrial waste water advance treatment |
| CN104857767A (en) * | 2015-05-29 | 2015-08-26 | 张国明 | Integrated filter system |
| CN112090203A (en) * | 2019-06-17 | 2020-12-18 | 陕西佰仕特机电设备有限公司 | Fully-mechanized mining face dust settling system and backwashing filter |
-
2005
- 2005-12-13 CN CN 200520120713 patent/CN2870952Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366319C (en) * | 2005-12-13 | 2008-02-06 | 深圳市金达莱环保股份有限公司 | Pretreatment filtering device for three-stage industrial waste water advance treatment |
| CN104857767A (en) * | 2015-05-29 | 2015-08-26 | 张国明 | Integrated filter system |
| CN112090203A (en) * | 2019-06-17 | 2020-12-18 | 陕西佰仕特机电设备有限公司 | Fully-mechanized mining face dust settling system and backwashing filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080206 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |