CN205442878U - Get rid of device of calcium in waste water, magnesium, Fluorine and element silicon - Google Patents
Get rid of device of calcium in waste water, magnesium, Fluorine and element silicon Download PDFInfo
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- CN205442878U CN205442878U CN201620194798.2U CN201620194798U CN205442878U CN 205442878 U CN205442878 U CN 205442878U CN 201620194798 U CN201620194798 U CN 201620194798U CN 205442878 U CN205442878 U CN 205442878U
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Abstract
The utility model provides a get rid of device of calcium in waste water, magnesium, fluorine and element silicon. The utility model discloses the device is including initial response ware, a separator, second reactor and the 2nd separator, initial response ware, a separator, second reactor and the 2nd separator link to each other in order. The utility model discloses get rid of device of calcium in waste water, magnesium, fluorine and element silicon simple structure, waste water flow through in proper order initial response ware, a separator, second reactor and the 2nd separator successively carry out twice the softening respectively in initial response ware and second reactor, simultaneously the effectual calcium of getting rid of in the waste water, magnesium, fluorine and element silicon, carry out mud at every turn behind the softening respectively and go out water separation processing in a separator and the 2nd separator, fully guarantee outlet water quality.
Description
Technical field
This utility model relates to industrial waste water treatment, in particular to a kind of device removing calcium in waste water, magnesium, fluorine and element silicon.
Background technology
Along with industrial expansion, the waste water of generation is also various informative, complicated component, such as the desulfurization wastewater of Coal,steam plant with FGD system, one the dirtiest in power plant system beyond doubt water；Shale gas receives much concern as a kind of unconventional energy resource of emerging exploitation, but the shale gas of the total dissolved solid containing high concentration and multiple chemical addition agent returns the bottleneck of discharge opeing always restriction shale gas exploitation development further.High, the waste water of complicated component for these suspension contents, the most traditional processing method is exactly chemical method coagulant precipitation, main purpose is effectively to remove the pollutant such as float in waste water, heavy metal ion, hardness/basicity, Organic substance, silicon, in order to subsequent technique processes.
These waste water mostly contain calcium, magnesium, fluorine, these several typical inorganic pollutions of silicon.Hardness ions such as calcium ions and magnesium ions is common a large amount of ions, if the highest meeting of content causes equipment to have fouling risk in sewage treatment equipment, affects the recycling of water resource；Fluorine is one of needed by human body trace element, the suitable fluorine mass concentration of drinking water is 0.5～1.0mg/L, industrial, the waste water of the industry discharges such as fluorine-containing Ore exploitation, metal smelt, organic synthesis chemical industry, electronics, plating often contains the fluoride of high concentration, causes fluoride pollution；Silicon is the main SiO to suspend in waste water2With dissolved silicon acid ion (SiO3 2-) two kinds of forms exist, silicon easily forms colloid in waste water, can have a strong impact on the operation of water treatment technology equipment.At present, calcium, magnesium, fluorine, silicon in waste water there are is a lot of removal device, but all just for one of which.
In view of this, special proposition this utility model.
Utility model content
The purpose of this utility model is to provide a kind of device removing calcium in waste water, magnesium, fluorine and element silicon, the described device of calcium, magnesium, fluorine and element silicon in waste water of removing has simple in construction, treatment effeciency is high, can the most effectively remove calcium, magnesium, fluorine and the element silicon in waste water, the advantages such as outlet effect is good, the comprehensive utilization that beneficially waste water is follow-up.
In order to realize above-mentioned purpose of the present utility model, spy by the following technical solutions:
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon, in described removal waste water, the device of calcium and magnesium fluorine silicon includes the first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus；Described first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus are sequentially connected.
It is simple that this utility model removes the apparatus structure of calcium, magnesium, fluorine and element silicon in waste water, wherein the first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus are sequentially connected, waste water flows through the first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus successively, successively in the first reactor and the second reactor, carry out twice sofening treatment respectively, can the most effectively remove calcium, magnesium, fluorine and the element silicon in waste water；In the first segregation apparatus and the second segregation apparatus, carry out mud and water outlet separating treatment respectively after sofening treatment every time, fully ensure that effluent characteristics.
Preferably, described first reactor and the second reactor are respectively stirred reactor.
Preferably, described first segregation apparatus and the second segregation apparatus are respectively depositing reservoir.
Preferably, described first segregation apparatus and the second segregation apparatus are respectively mud-dreg separating contact type clarification tank.
It is further preferred that described first segregation apparatus and the second segregation apparatus are respectively mechanical accelerating purifying pool, circulatior clarifier, sludge blanket clarifier or plusator.
The process technique of water and waste water includes that water and the mixing of medicament, reaction and floccule body separate three phases with water.In prior art, depositing reservoir has been exactly that above three process is in the Special Equipment of one.
And this utility model is removed the device of calcium, magnesium, fluorine and element silicon in waste water and is arranged the first reactor and the second reactor, for water and the mixing of medicament, reaction, first segregation apparatus and the second segregation apparatus are only used for the separation of mud and water outlet, help lend some impetus to mud and the separation of depositing reservoir supernatant water outlet, reduce the delivery turbidity of depositing reservoir supernatant further, improve depositing reservoir supernatant effluent characteristics.
Mud-dreg separating contact type clarification tank can be removed the plurality of impurities in water by coagulation clarification, including carbonate hardness, larger molecular organics, float, colloid etc..Mud-dreg separating contact type clarification tank has body refuse contact and separates two kinds of functions with body refuse, high rate cyclic can be forced to strengthen reaction and to dissolve, dynamic body refuse or suspension slime layer can also be formed, utilize active sludge contact process and huge contact surface area, remove Organic substance colloid substances and the inorganic colloid thing (such as colloidal silicon, ferrum, aluminum) of relatively small molecular weight, and medicament and product thereof are condensed in noresidue.
Mechanical accelerating purifying pool can increase particles collision chance, improve coagulation effect by the former water of the active sludge layer of suspended state and dosing under mechanical agitation.Clear water through separating ramps up, and flows out through water leg, and the body refuse part the avaled water mechanical mixture former with dosing that reflux again react, partly the most concentrated rear periodic exhaustion.Mechanical accelerating purifying pool is to the water yield, the strong adaptability of water intermediate ion concentration change, and treatment effect is stable, and treatment effeciency is high.But by mechanical agitation, power consumption is relatively big, seriously corroded, maintenance difficult.
Circulatior clarifier, under the effect of water sprayer, sucks the active sludge in pond and former water is sufficiently mixed, thus strengthen in water the contact between solid particle and adsorption, form good flocculation, accelerate sedimentation velocity and make water be clarified.The former water having added coagulant enters nozzle from inlet channel, to spray into trunnion at a high speed, vacuum is formed around the horn mouth of trunnion, suck the body refuse amount of about 3 times of former water, mix with the rapid of former water through body refuse, enter the first reative cell that flaring is tubular, and the second reative cell carries out coagulating treatment.Trunnion can move up and down to regulate the spacing of nozzle and trunnion, makes 1～2 times equal to nozzle diameter, and controls the body refuse amount of backflow whereby.Current enter separation chamber from the second reative cell, and due to the sudden enlargement of basal area, flow velocity reduces, body refuse just avales, a portion body refuse enters body refuse thickening cone and is periodically discharged, and major part body refuse is inhaled into trunnion and refluxes, and clear water rises from water leg outflow.
Sludge blanket clarifier can make dosing after former water from bottom to top by being in the slime layer of suspended state, make the particles collision cohesion of impurities in water and body refuse superposed layer and precipitation separation.
Plusator can make superposed layer constantly produce periodically compression and expand, and promotes solid impurity and established body refuse in former water to carry out contact flocculation and the pond of precipitation separation.This change is caused by pulse generator.When upflow velocity is little, body refuse superposed layer shrinks, concentration increases and makes granule arrangement closely；When upflow velocity is big, body refuse superposed layer expands.
Preferably, described first segregation apparatus and the second segregation apparatus are respectively ultrafiltration apparatus.
Ultrafiltration apparatus is a kind of pressurization membrane separation device, the most under pressure, makes little molecule solute and solvent pass the special thin film of certain pore size, and makes macromole solute not pass through, stay film, so that macromolecular substances has obtained the purification of part.The solvent contained in feed liquid and various little solute arrive low-pressure side from high pressure feed liquid side through filter membrane, thus obtain permeate or referred to as ultrafiltrate；Its ultrafilter membrane micropore up to 0.01 micron (100,000/millimeter) below, can be removed under the microgranule in water, colloid, antibacterial, thermal source and Organic substance power effect effectively, and the size solute molecule bigger than membrane aperture is rejected by into concentrated solution.
Ultrafiltration belongs to pressure-driven membrane separating process, and the separating ranges of ultrafilter membrane is macromolecular substances and the colloid speciality of relative molecular mass 500-100 ten thousand, a diameter of 0.005-0.1 μm of corresponding particle；Separating mechanism is commonly considered as mechanical grading hyperfiltration membrane assembly board-like, rolling water purification ultrafilter membrane.
Concentration polarization is the natural phenomena of membrane separating process, how this phenomenon is relieved to minimum level, is one of the important topic of hyperfiltration technique.The measure taked at present has: 1. improves face water velocity, to reduce boundary layer thickness, and makes the solute being trapped be taken away by water in time；2. washing measure physically or chemically is taked.
Typical process flow: stock solution-storage tank-force (forcing) pump-accurate filter-hollow fiber ultrafiltration equipment-fluid reservoir-backwash water tank-backwashing pump.
Comparing other segregation apparatuss, ultrafiltration apparatus has the advantage that
1. ultra-filtration process is to carry out at normal temperatures, and mild condition is without component damage, thus particularly suitable to heat sensitive material, as medicine, enzyme, fruit juice etc. separation, classification, concentrate and be enriched with.
2. ultra-filtration process does not changes, it is not necessary to heating, and energy consumption is low, it is not necessary to add chemical reagent, pollution-free, is the isolation technics of a kind of energy-conserving and environment-protective.
3. hyperfiltration technique separation efficiency is high, and the concentration to the recovery of the micro constitutent in weak solution, low concentration solution is the most highly effective.
4. ultra-filtration process is only with pressure as the power of membrance separation, and therefore segregation apparatus is simple, flow process is short, easy and simple to handle, easily controllable and safeguard.
Reasonable in design, handsome in appearance, the highly versatile of ultrafiltration apparatus, draw materials exquisite, sturdy and durable.Stable chemical performance, corrosion resistance is strong, and acid and alkali resistance, the erosion (pH value: 0～14) of salt are nontoxic, tasteless, lightweight, and intensity is high (high temperature resistant, high pressure), rapid operation.Tubular ultra-filtration membrane equipment all kinds of styles is widely used in the fields such as oil, chemical industry, fruit juice, light industry, pharmacy, food, development of resources, metallurgical coal, national defense industry, environmental conservation.
It is further preferred that described first segregation apparatus and the second segregation apparatus are respectively tubular ultra-filtration membrane device or immersion ultrafiltration apparatus.
Using above-mentioned device to remove calcium, magnesium, fluorine and the method for element silicon in waste water, described waste water is discharged after flowing through the first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus successively；Wherein, alkali is added in the first reactor, it is preferably added to Calx or sodium hydroxide reacts, first reactor gained reactant liquor enters the first segregation apparatus, in first segregation apparatus, gained supernatant enters second point of reactor, adding sodium carbonate in the second reactor to react, the second reactor gained reactant liquor enters the second segregation apparatus, and the second segregation apparatus gained supernatant enters subsequent technique.
In this utility model removal waste water in the method for calcium, magnesium, fluorine and element silicon, in waste water, first add alkali, it is preferably Calx or sodium hydroxide, after agitated reaction, magnesium precipitates completely with the form of magnesium hydroxide, silicon is adsorbed with the form such as magnesium silicate or calcium silicates or precipitates and separates out, and fluorine is with the Precipitation of calcium fluoride；Adding sodium carbonate afterwards, after agitated reaction, calcium precipitates completely with the formation of calcium carbonate, and remaining a small amount of silicon and fluorine are it is possible to absorption is precipitated in precipitation；In this utility model removal waste water in the method for calcium, magnesium, fluorine and element silicon, there is the Mg (OH) of huge surface area2And CaCO3Precipitate is the float in a large amount of adsorbed water bodies, colloid etc. in precipitation process, is favorably improved effluent characteristics；
Preferably for different waste water qualities, this utility model can also be otherwise varied on dosing selects, for the waste water of hardness ions content Ca:Mg >=3:1 in waste water, first reactor is preferably added to sodium hydroxide, and the second reactor is preferably added to enough sodium carbonate, reduces reagent consumption and sludge quantity；For the waste water of hardness ions content Mg:Ca >=3:1 in waste water, the first reactor is preferably added to Calx, and the second reactor is preferably added to enough sodium carbonate, to ensure clearance and the outlet effect of pollutant；For SO4 2-The ion concentration waste water more than 8000mg/L, first reactor is preferably added to Calx, second reactor is preferably added to enough sodium carbonate, and calcium can precipitate with the form of calcium fluoride, calcium sulfate at the first reactor, it is possible to effectively reduce reagent consumption amount and the sludge quantity of the second reactor.
It is simple that this utility model removes the method technique of calcium, magnesium, fluorine and element silicon in waste water, the process time is short, can the most effectively remove calcium, magnesium, fluorine and the element silicon in waste water, outlet effect is good, be conducive to the comprehensive utilization that waste water is follow-up, the dosage of chemical raw material can not only be reduced, also can effectively reduce produced sludge quantity, the mud main component produced is respectively magnesium hydroxide and calcium carbonate, contributes to the follow-up comprehensive utilization realizing mud.
Preferably, control waste water in the first reactor be pH be more than 11.
Controlling waste water in the first reactor is alkalescence, contributes to making magnesium precipitate completely with the form of magnesium hydroxide, promotes that silicon is adsorbed with the form such as magnesium silicate or calcium silicates or precipitates and separates out, promotes that calcium fluoride precipitate is complete.
Preferably, controlling the hydraulic detention time in the first reactor is 0.5-6h, preferably 0.5-4h, more preferably 0.5-2h.
Control the first reactor keeps specific hydraulic detention time, help lend some impetus to reaction in the first reactor abundant, make magnesium precipitate completely with the form of magnesium hydroxide, promote that silicon is adsorbed with the form such as magnesium silicate or calcium silicates or precipitates and separates out, promote that calcium fluoride precipitate is complete.
Preferably, controlling the hydraulic detention time in the first segregation apparatus is 0.5-6h, preferably 1-4h, more preferably 1.5-3h.
Control the first segregation apparatus keeps specific hydraulic detention time, help lend some impetus to the first reactor reacts obtain magnesium hydroxide, magnesium silicate, calcium silicates, being sufficiently separated of the mud such as calcium fluoride, improve the effluent characteristics of the first segregation apparatus.
Preferably, control waste water in the second reactor be pH be more than 10.
Controlling waste water in the second reactor is alkalescence, contributes to making calcium precipitate completely with the formation of calcium carbonate, and remaining a small amount of silicon and fluorine are it is possible to absorption is precipitated in precipitation of calcium carbonate.
Preferably, controlling the hydraulic detention time in the second reactor is 0.5-6h, preferably 0.5-4h, more preferably 0.5-2h.
Controlling to keep in the second reactor specific hydraulic detention time, help lend some impetus to reaction in the second reactor and fully, make calcium precipitate completely with the formation of calcium carbonate, remaining a small amount of silicon and fluorine are it is possible to absorption is precipitated in precipitation of calcium carbonate.
Preferably, controlling the hydraulic detention time in the second segregation apparatus is 0.5-4h, preferably 0.5-2h, more preferably 0.5-1h.
Control the second segregation apparatus keeps specific hydraulic detention time, help lend some impetus to the second reactor reacts being sufficiently separated of the mud such as the calcium carbonate that obtains, improve the effluent characteristics of the second segregation apparatus.
Compared with prior art, the beneficial effects of the utility model are:
It is simple that this utility model removes the apparatus structure of calcium, magnesium, fluorine and element silicon in waste water, wherein the first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus are sequentially connected, waste water flows through the first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus successively, successively in the first reactor and the second reactor, carry out twice sofening treatment respectively, can the most effectively remove calcium, magnesium, fluorine and the element silicon in waste water；In the first segregation apparatus and the second segregation apparatus, carry out mud and water outlet separating treatment respectively after sofening treatment every time, fully ensure that effluent characteristics.
In this utility model removal waste water in the method for calcium, magnesium, fluorine and element silicon, in waste water, first add alkali, it is preferably Calx or sodium hydroxide, after agitated reaction, magnesium precipitates completely with the form of magnesium hydroxide, silicon is adsorbed with the form such as magnesium silicate or calcium silicates or precipitates and separates out, and fluorine is with the Precipitation of calcium fluoride；Adding sodium carbonate afterwards, after agitated reaction, calcium precipitates completely with the formation of calcium carbonate, and remaining a small amount of silicon and fluorine are it is possible to absorption is precipitated in precipitation；In this utility model removal waste water in the method for calcium, magnesium, fluorine and element silicon, there is the Mg (OH) of huge surface area2And CaCO3Precipitate is the float in a large amount of adsorbed water bodies, colloid etc. in precipitation process, is favorably improved effluent characteristics；
It is simple that this utility model removes the method technique of calcium, magnesium, fluorine and element silicon in waste water, the process time is short, can the most effectively remove calcium, magnesium, fluorine and the element silicon in waste water, outlet effect is good, be conducive to the comprehensive utilization that waste water is follow-up, the dosage of chemical raw material can not only be reduced, also can effectively reduce produced sludge quantity, the mud main component produced is respectively magnesium hydroxide and calcium carbonate, contributes to the follow-up comprehensive utilization realizing mud.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that this utility model removes calcium, magnesium, fluorine and the apparatus structure schematic diagram of element silicon in waste water；
Reference:
1-the first reactor；2-the first segregation apparatus；3-the second reactor；
4-the second segregation apparatus.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is clearly and completely described, but it will be understood to those of skill in the art that, following described embodiment is a part of embodiment of this utility model, rather than whole embodiments, it is merely to illustrate this utility model, and is not construed as limiting scope of the present utility model.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.Unreceipted actual conditions person in embodiment, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or instrument unreceipted production firm person, being can be by the commercially available conventional products bought and obtain.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be for only for ease of description this utility model and simplifying and describe; rather than instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.
Embodiment 1
The desulfurization wastewater in thermal power plant, East China contains the materials such as substantial amounts of float, Organic substance, inorganic matter ion, silicon, in order to follow-up reverse osmosis process can be properly functioning, preprocess method uses a kind of method removing calcium in waste water, magnesium, fluorine and element silicon that the utility model proposes, and in the removal waste water used, the apparatus structure of calcium, magnesium, fluorine and element silicon is as shown in Figure 1；Described waste water is discharged after flowing through first reactor the 1, first segregation apparatus the 2, second reactor 3 and the second segregation apparatus 4 successively；Described first reactor 1 and the second reactor 3 are respectively adopted stirred reactor, and described first segregation apparatus 2 and the second segregation apparatus 4 are respectively adopted mechanical accelerating purifying pool；
Wherein, the first reactor adds enough Calx, control waste water in the first reactor be pH be more than 11, controlling the hydraulic detention time in the first reactor is 4-6h, removes the magnesium in waste water, silicon, fluorine element；Controlling the hydraulic detention time in the first segregation apparatus is 4-6h；In the second reactor, add sodium carbonate, control waste water in the second reactor be pH be more than 10, controlling the hydraulic detention time in the second reactor is 4-6h, removes the calcium constituent in the water body that the first segregation apparatus flows out, and the silicon of remnants and fluorine element；Controlling the hydraulic detention time in the second segregation apparatus is 2-4h.
Embodiment 2
The desulfurization wastewater that Coal,steam plant with FGD system in North China's produces contains the materials such as substantial amounts of float, heavy metal, inorganic salt, Organic substance, and sulfate ion content is up to 30000mg/L, after traditional three header techniques, water outlet still contains substantial amounts of inorganic ion, such as potassium, sodium, calcium, magnesium, fluorion, chloride ion, sulfate radical, silicon etc..The method and apparatus that this utility model provides can effectively remove the materials such as calcium in waste water, magnesium, fluorine and silicon, and in the removal waste water used, the apparatus structure of calcium, magnesium, fluorine and element silicon is as shown in Figure 1；Described waste water is discharged after flowing through first reactor the 1, first segregation apparatus the 2, second reactor 3 and the second segregation apparatus 4 successively；Described first reactor 1 and the second reactor 3 are respectively adopted stirred reactor, and described first segregation apparatus 2 uses mechanical accelerating purifying pool, and the second segregation apparatus 4 uses tubular ultra-filtration membrane device；
Wherein, the first reactor adds enough Calx, control waste water in the first reactor be pH be more than 11, controlling the hydraulic detention time in the first reactor is 2-4h, removes the magnesium in waste water, silicon, fluorine element；Controlling the hydraulic detention time in the first segregation apparatus is 3-4h；In the second reactor, add sodium carbonate, control waste water in the second reactor be pH be more than 10, controlling the hydraulic detention time in the second reactor is 4-6h, removes the calcium constituent in the water body that the first segregation apparatus flows out, and the silicon of remnants and fluorine element；Controlling the hydraulic detention time in the second segregation apparatus is 1-2h.
Embodiment 3
Southwestern China area is the vital area of exploitation shale gas, and shale gas returns a great problem processing always puzzlement shale gas exploitation of discharge opeing.Using this Patent Utility Model method and apparatus to remove shale gas in the present embodiment and return the materials such as calcium in discharge opeing, magnesium, fluorine and silicon, in the removal waste water used, the apparatus structure of calcium, magnesium, fluorine and element silicon is as shown in Figure 1；Described waste water is discharged after flowing through first reactor the 1, first segregation apparatus the 2, second reactor 3 and the second segregation apparatus 4 successively；Described first reactor 1 and the second reactor 3 are respectively adopted stirred reactor, and described first segregation apparatus 2 and the second segregation apparatus 4 are respectively adopted tubular ultra-filtration membrane device；
Wherein, the first reactor adds sufficient hydrogen sodium oxide, control waste water in the first reactor be pH be more than 11, controlling the hydraulic detention time in the first reactor is 0.5-2h, removes the magnesium in waste water, silicon, fluorine element；Controlling the hydraulic detention time in the first segregation apparatus is 1.5-3h；Adding sodium carbonate in the second reactor, controlling waste water in the second reactor is more than pH10, and controlling the hydraulic detention time in the second reactor is 0.5-2h, removes the calcium constituent in the water body that the first segregation apparatus flows out, and the silicon of remnants and fluorine element；Controlling the hydraulic detention time in the second segregation apparatus is 0.5-1h.
Experimental example
The method of calcium, magnesium, fluorine and element silicon in waste water of removing of this utility model embodiment 1-embodiment 3 being detected, acquired results is as shown in table 1.
Table 1 this utility model removes calcium, magnesium, fluorine and the method testing result of element silicon in waste water
Be can be seen that by table 1, this utility model is used to remove calcium, magnesium, fluorine and the device of element silicon in waste water, can effectively remove calcium, magnesium, fluorine and the element silicon in industrial wastewater, wherein the delivery turbidity of the first segregation apparatus 2 is at below 5NTU, the delivery turbidity of the second segregation apparatus 4 respectively is 99%, 99%, 96%, more than 96% at below 3NTU, the total removal rate of calcium, magnesium, fluorine and element silicon.
It is simple that this utility model removes the apparatus structure of calcium, magnesium, fluorine and element silicon in waste water, wherein first reactor the 1, first segregation apparatus the 2, second reactor 3 and the second segregation apparatus 4 are sequentially connected, waste water flows through the first reactor the 1, first segregation apparatus the 2, second reactor 3 and the second segregation apparatus 4 successively, successively in the first reactor 1 and the second reactor 3, carry out twice sofening treatment respectively, can the most effectively remove calcium, magnesium, fluorine and the element silicon in waste water；In the first segregation apparatus 2 and the second segregation apparatus 4, carry out mud and water outlet separating treatment respectively after sofening treatment every time, fully ensure that effluent characteristics.
In this utility model removal waste water in the method for calcium, magnesium, fluorine and element silicon, in waste water, first add alkali, it is preferably Calx or sodium hydroxide, after agitated reaction, magnesium precipitates completely with the form of magnesium hydroxide, silicon is adsorbed with the form such as magnesium silicate or calcium silicates or precipitates and separates out, and fluorine is with the Precipitation of calcium fluoride；Adding sodium carbonate afterwards, after agitated reaction, calcium precipitates completely with the formation of calcium carbonate, and remaining a small amount of silicon and fluorine are it is possible to absorption is precipitated in precipitation；In this utility model removal waste water in the method for calcium, magnesium, fluorine and element silicon, there is the Mg (OH) of huge surface area2And CaCO3Precipitate is the float in a large amount of adsorbed water bodies, colloid etc. in precipitation process, is favorably improved effluent characteristics；
It is simple that this utility model removes the method technique of calcium, magnesium, fluorine and element silicon in waste water, the process time is short, can the most effectively remove calcium, magnesium, fluorine and the element silicon in waste water, outlet effect is good, be conducive to the comprehensive utilization that waste water is follow-up, the dosage of chemical raw material can not only be reduced, also can effectively reduce produced sludge quantity, the mud main component produced is respectively magnesium hydroxide and calcium carbonate, contributes to the follow-up comprehensive utilization realizing mud.
Although illustrate and describing this utility model with specific embodiment, however it will be appreciated that may be made that in the case of without departing substantially from spirit and scope of the present utility model many other change and amendment.It is, therefore, intended that all such changes and modifications in the range of including belonging to this utility model in the following claims.
Claims (10)
1. the device removing calcium in waste water, magnesium, fluorine and element silicon, it is characterised in that in described removal waste water, the device of calcium and magnesium fluorine silicon includes the first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus；Described first reactor, the first segregation apparatus, the second reactor and the second segregation apparatus are sequentially connected.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 1, it is characterised in that described first reactor and the second reactor are respectively stirred reactor.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 1, it is characterised in that described first segregation apparatus and the second segregation apparatus are respectively depositing reservoir.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 3, it is characterised in that described first segregation apparatus and the second segregation apparatus are respectively mud-dreg separating contact type clarification tank.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 4, it is characterized in that, described first segregation apparatus and the second segregation apparatus are respectively mechanical accelerating purifying pool, circulatior clarifier, sludge blanket clarifier or plusator.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 1, it is characterised in that described first segregation apparatus and the second segregation apparatus are respectively ultrafiltration apparatus.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 6, it is characterised in that described first segregation apparatus and the second segregation apparatus are respectively tubular ultra-filtration membrane device or immersion ultrafiltration apparatus.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 1, it is characterised in that described first segregation apparatus and the second segregation apparatus are respectively mechanical accelerating purifying pool.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 1, it is characterised in that described first segregation apparatus is mechanical accelerating purifying pool, the second segregation apparatus is tubular ultra-filtration membrane device.
A kind of device removing calcium in waste water, magnesium, fluorine and element silicon the most according to claim 1, it is characterised in that described first segregation apparatus and the second segregation apparatus are respectively tubular ultra-filtration membrane device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540939A (en) * | 2016-03-14 | 2016-05-04 | 北京沃特尔水技术股份有限公司 | Device and method for removing calcium, magnesium, fluorine and silicon elements in wastewater |
| CN110451706A (en) * | 2019-05-13 | 2019-11-15 | 上海晶宇环境工程股份有限公司 | The separating technology and special equipment of high-enriched organics and salt during strong brine zero-emission |
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2016
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540939A (en) * | 2016-03-14 | 2016-05-04 | 北京沃特尔水技术股份有限公司 | Device and method for removing calcium, magnesium, fluorine and silicon elements in wastewater |
| CN110451706A (en) * | 2019-05-13 | 2019-11-15 | 上海晶宇环境工程股份有限公司 | The separating technology and special equipment of high-enriched organics and salt during strong brine zero-emission |
| CN110451706B (en) * | 2019-05-13 | 2023-10-27 | 上海晶宇环境工程股份有限公司 | Separation process of high-concentration organic matters and salt in zero-emission process of strong brine and special equipment |
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Denomination of utility model: Device and method for removing calcium, magnesium, fluorine and silicon elements in wastewater Effective date of registration: 20191105 Granted publication date: 20160810 Pledgee: Zhonggong Water Co., Ltd. Pledgor: Zhonggong Waterer Water Technology Co., Ltd. Registration number: Y2019990000468 |
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