CN207811479U - A kind of MVR evaporations divide the pretreatment system of salt - Google Patents

Abstract

The utility model discloses the pretreatment systems that a kind of MVR evaporations divide salt, including original fluid container, aerator, impurity removing equipment, sedimentation basin and filter plant；The original fluid container is sequentially connected aerator, impurity removing equipment, sedimentation basin and filter plant, and the outlet connection MVR evaporations of filter plant divide salt equipment；Wherein impurity removing equipment includes the first blending tank, the second blending tank, akali sulphide tank and molysite tank, the akali sulphide tank connects first blending tank, first blending tank connects the second blending tank, the molysite tank connects the second blending tank, the import of first blending tank connects aerator, and the liquid outlet of second blending tank connects sedimentation basin.The utility model pretreatment system, this system by deliming, magnesium removing heavy metals except impurity again deliming, magnesium form, can by the solution for carrying out point salt impurity and other substances remove clean, to retain the potassium in solution, sodium, ensure the salt degree of purity for dividing salt.

Description

A kind of MVR evaporations divide the pretreatment system of salt

Technical field

The utility model is related to the pretreatment systems that incineration of refuse flyash process field more particularly to a kind of MVR evaporations divide salt System.

Background technology

Currently, environmental pollution is the most important problem faced in modern production, life, nowadays to the rubbish in life Processing is broadly divided into landfill and burning, is easy to go underground middle pollutant during landfill, contaminated soil, therefore more extensively By waste incineration, need to keep higher temperature first, in combustion process, and existing heat source mainly uses natural gas, energy Consumption is higher, and a large amount of flying dust solid particles are generated after waste incineration, and the processing of solid particle is also particularly critical.

There are a large amount of harmful substance (such as bioxin in flying dust after waste incineration), heavy metal and recyclable salt object Matter, if flying dust is directly used for building materials or direct emission, it will influence the quality of building materials and bring secondary dirt to environment Dye is all that first will carry out separation salts substances again after the harmful substance removal in flying dust under normal circumstances, and such way can Pollution is reduced, while salts substances can be recycled again and used as the raw material of industry, reduces the cost of processing rubbish.

In existing system the removal of harmful substance be all made of high temperature incineration method, after by dilution detach, energy Part heavy metal is enough removed, still, such form is incomplete to the removal of heavy metal, to influence to divide the quality of salt, in addition, Most of salts substances of recoverable can also have calcium salt and magnesium salts based on sylvite, sodium salt in solution, same Influence whether that the quality of salt separated, the sylvite of extraction, the purity of sodium salt are inadequate, it is also necessary to process of refinement is done again, when waste Between, while increasing cost.

Utility model content

In conjunction with the deficiencies in the prior art, the utility model provides one kind and can thoroughly remove harmful substance, ensure evaporation Point salt quality, the MVR to reduce the cost evaporations divide the pretreatment system of salt.

The purpose of this utility model is achieved through the following technical solutions：

A kind of MVR evaporations divide the pretreatment system of salt, including original fluid container, aerator, impurity removing equipment, sedimentation basin and mistake Filter equipment；

The original fluid container is sequentially connected aerator, impurity removing equipment, sedimentation basin and filter plant, the outlet of filter plant Connection MVR evaporations divide salt equipment；

Wherein impurity removing equipment includes the first blending tank, the second blending tank, akali sulphide tank and molysite tank, and the akali sulphide tank connects Connecing first blending tank, first blending tank connects the second blending tank, and the molysite tank connects the second blending tank, and described the The import of one blending tank connects aerator, and the liquid outlet of second blending tank connects sedimentation basin.

Further, the sedimentation basin is made of mixed zone, flocculation zone and settling zone, the bottom of the mixed zone and wadding The water inlet of coagulation zone bottom is connected, and guide shell is equipped in the flocculation zone, and the guide shell is opposite with the water inlet of flocculation zone It answers, the top side of the settling zone is equipped with water outlet, and the bottom of the settling zone is equipped with mud discharging mouth, the water outlet Equipped with comb block piece, the first agitating device is equipped in the mixed zone.

Further, the second agitating device is equipped in the flocculation zone, second agitating device is arranged in the water conservancy diversion The inside of cylinder.

Further, the guide shell side adjacent with settling zone is equipped with partition board, and the bottom of the partition board and pond body is set There is interval.

Further, the bottom of the sedimentation basin is additionally provided with inclined circulation pipe, and the circulation pipe connects the flocculation zone Water inlet, the circulation pipe be equipped with circulating pump.

Further, the filter plant includes sand filtration apparatus, and the sand filtration apparatus is sequentially connected neutralization pond and is set with refined filtration Standby, wherein neutralization pond is acid-base accommodation equipment, and refined filtration equipment is filter.

Further, the sand filtration apparatus includes the tank body that bottom is taper, the outside of the tank body be equipped with original water inlet, Outlet of sewer and water purification outlet, the inner top side of the tank body is equipped with the collecting container being connected to tank interior, described to catchment The bottom of container connects outlet of sewer, and the top of the collecting container connects water purification outlet, be equipped in the tank body with raw water into The middle part of the water distributor of mouth connection, the tank body is equipped with extraction pipe, is placed in the collecting container at the top of the extraction pipe, institute The bottom for stating extraction pipe is equipped with elevator pump, is higher than the casting bed of water distributor in the tank body equipped with top surface.

Further, the bottom of the collecting container is equipped with the sand-washing device communicated therewith, and the sand-washing device is to be set in carry Delivery pipe on the outside of expects pipe, delivery pipe are that longitudinal section is waveform.

Further, the bottom side of the water distributor, which is additionally provided with, leads sand hopper, and the shape for leading sand hopper is whole gradual downwards Widened cone tubular structure.

Further, the pyramidal structure of the plane led where the maximum gauge of sand hopper less than the bottom of the tank body Plane where maximum gauge, and lead the inner wall of sand hopper and tank body there are gaps.

The utility model has the beneficial effects that：

The utility model pretreatment system, this system by deliming, magnesium-removing heavy metals-except impurity-again deliming, magnesium shape Formula, can by the solution for carrying out point salt impurity and other substances remove it is clean, to retain the potassium in solution, Sodium ensures the salt degree of purity for dividing salt；The structure of removing heavy metals in this system, can effectively by the heavy metal in mixed liquor from Son removal is perfect, and generates the vulcanized slag and salting liquid that easily deposit, and heavy metal that can be in vulcanized slag can be easily separated, conduct after washing The raw material of industry uses, and achievees the purpose that removing heavy metals；Filtration system structure can effectively do the impurity beginning in water body Only, solvent clean is ensured.

Description of the drawings

Fig. 1 is the system structure block diagram for the pretreatment system that the MVR evaporations that the utility model embodiment provides divide salt；

Fig. 2 is the structural representation that the MVR that the utility model embodiment provides evaporates sedimentation basin in the pretreatment system for dividing salt Figure；

Fig. 3 is that the MVR evaporations that the utility model embodiment provides divide the structure of sand filtration apparatus in the pretreatment system of salt to show It is intended to.

In figure：1, original fluid container；2, aerator；3, impurity removing equipment；301, the first blending tank；302, the second blending tank； 303, akali sulphide tank；304, molysite tank；4, sedimentation basin；401, mixed zone；402, flocculation zone；403, settling zone；404, water inlet； 405, guide shell；406, mud discharging mouth；407, block piece is combed；408, the first agitating device；409, the second agitating device；4010、 Partition board；4011, circulation pipe；4012, circulating pump；5, filter plant；501, sand filtration apparatus；502, neutralization pond；503, refined filtration equipment； 6, tank body；7, original water inlet；8, outlet of sewer；9, water purification outlet；10, collecting container；11, water distributor；12, extraction pipe；13, it carries Rise pump；14, casting bed；15, sand-washing device；16, sand hopper is led.

Specific implementation mode

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.Therefore, below to attached The detailed description of the embodiments of the present invention provided in figure is not intended to limit claimed the scope of the utility model, It is merely representative of the selected embodiment of the utility model, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.

As shown in Figure 1, Fig. 1 shows that the MVR evaporations that the utility model embodiment provides divide the pretreatment system of salt, including Original fluid container 1, aerator 2, impurity removing equipment 3, sedimentation basin 4 and filter plant 5；

Original fluid container 1 is sequentially connected aerator 2, impurity removing equipment 3, sedimentation basin 4 and filter plant 5, and filter plant 5 goes out Mouth connection MVR evaporations divide salt equipment；

Wherein, aerator 2 is aeration tank, is mainly passed through carbon dioxide, carbon dioxide and water formed carbonate from Son, carbanion and calcium ions and magnesium ions combine, and form precipitation, achieve the purpose that removing calcium and magnesium, impurity removing equipment 3 include the first mixing Tank 301, the second blending tank 302, akali sulphide tank 303 and molysite tank 304, the first blending tank 301 of connection of akali sulphide tank 303, first Blending tank 301 connects the second blending tank 302, and molysite tank 304 connects the second blending tank 302, the import connection of the first blending tank 301 The liquid outlet of aerator 2, the second blending tank 302 connects sedimentation basin 4.

303 memory of akali sulphide tank is placed with Gas with Sodium Sulfide Solution, and 304 memory of molysite tank is placed with iron salt solutions, akali sulphide tank 303 with Molysite tank 304 can connect vapour source, and hot steam can improve the temperature in tank, to accelerate the molten of akali sulphide and molysite Solution, Gas with Sodium Sulfide Solution is passed through in the first blending tank 301, by being stirred continuously, akali sulphide sets middle Jinsui River ion in raw water It changes to form sulphur slag not soluble in water, sulphur slag can be by washing and dressing equipment extraction.

Iron salt solutions are passed through in the second blending tank 302 by raw water into the second blending tank of people 302, and iron salt solutions are by raw water Interior excessive akali sulphide removal, to realize the course of work for removing removing heavy metals.

Wherein solution can use the liquid pump being adapted with solution by Pipeline transport, improve working efficiency.

As shown in Fig. 2, sedimentation basin 4 is made of mixed zone 401, flocculation zone 402 and settling zone 403, the bottom of mixed zone 401 Portion is connected with the water inlet 404 of 402 bottom of flocculation zone, and guide shell 405, guide shell 405 and flocculation zone are equipped in flocculation zone 402 402 water inlet 404 is corresponding, and the top side of settling zone 403 is equipped with water outlet, and the bottom of settling zone 403 is arranged equipped with sludge Mouth 406 is put, water outlet is equipped with comb block piece 407.

Wherein, it is equipped with the first agitating device 408 in mixed zone 401, the second agitating device 409 is equipped in flocculation zone 402, the Two agitating devices 409 are arranged in the inside of guide shell 405, and comb block piece 407 is the pipe fitting of entire combination, is inclined at water In, the distance between adjacent pipe sections are between 5-20cm, preferably 10 centimetres, and pipe fitting is installed as apart from adjustable form.

Wherein, raw water is directed into the mixed zone 401 of sedimentation basin 4, flocculant or stone is added in mixed zone 401 Ash, the first agitating device 408, which can quickly stir flocculant or lime, to be dissipated and is sufficiently mixed with raw water, is formed small cotton-shaped Substance, flocculent substance flows into flocculation zone 402 along bottom under the action of flow makes water under the action of the second agitating device 409 Body is flowed up along the bottom of guide shell 405, flocculent substance in cylinder by under the action of mixing power improve flocculent substance it is close Degree, forms the flocculent substance of large volume, and the flocculent substance of large volume is flowed into water body in settling zone 403.

Specifically, guide shell 405, which is bottom side, could be provided as wide-mouth shape, the guide shell 405 of wide-mouth shape can be more effective The water body in flocculation zone 402 will be entered, and all stirring is promoted, and is improved work efficiency.

Wherein, the side adjacent with settling zone 403 of guide shell 405 is equipped with partition board 4010, the bottom of partition board 4010 and pond body Equipped with interval, partition board 4010 can play the role of unhurried current, and the water body for failing to be directly entered guide shell 405 is made not flow directly into In settling zone 403, and the cycle in guide shell 405 repeatedly, improve the cohesive process of the flocculent substance of small size.

Preferably, the height of partition board 4010 can prevent first higher than the pool wall between flocculation zone 402 and settling zone 403 Only the flocculent substance in more flocculation zones 402 not by guide shell 405 is entered one step ahead in settling zone 403, in addition, flocculation Pool wall between area 402 and settling zone 403 it is a lower height of in the case of, entrance can be facilitated in order to the flocculent substance of large volume In settling zone 403, avoid being accumulated by the barrier of height.

As further preferred embodiment, the bottom of settling zone 403 is additionally provided with inclined circulation pipe 4011, circulation pipe The water inlet 404 of 4011 connection flocculation zones 402, circulation pipe 4011 are equipped with circulating pump 4012, and the effect of circulation pipe 4011 is energy The sediment of low concentration is recycled squeeze into flocculation zone again by enough, open the circulation pumps 4012 lower in sludge concentration 402 enter mixed lifting solubility in guide shell 405, can effectively improve working efficiency and improve the dense of sediment discharge Degree, preferably to apply again.

Referring again to Fig. 1, filter plant 5 includes sand filtration apparatus 501, and sand filtration apparatus 501 is sequentially connected neutralization pond 502 and essence Equipment 503 is filtered, wherein neutralization pond 502 is acid-base accommodation equipment, and refined filtration equipment 503 is filter, and can be set in refined filtration Filling sodium form-positive resin filtrate can be further by calcium remaining in solution while filtering out impurity in standby 503 Magnesium ion removes, and ensures the degree of purity of k-na salt.

Specifically, filter plant 5 can also be arranged aeration tank, aeration tank setting sand coarse aggregate ratio equipment 501 and neutralization pond 502 it Between, the calcium ions and magnesium ions in solution can be further removed, the collective effect of refined filtration equipment 503 is finally combined, it will be in solution Calcium ions and magnesium ions eliminate completely, ensure the degree of purity for dividing salt.

As shown in figure 3, sand filtration apparatus 501 includes the tank body 6 that bottom is taper, the outside of tank body 6 be equipped with original water inlet 7, Outlet of sewer 8 and water purification outlet 9, the inner top side of tank body 6 are equipped with the collecting container 10 being connected to 6 inside of tank body, collect the water capacity The bottom of device 10 connects outlet of sewer 8, and the top of collecting container 10 connects water purification outlet 9, is equipped with and original water inlet 7 in tank body 6 The middle part of the water distributor 11 of connection, tank body 6 is equipped with extraction pipe 12, and the top exit of extraction pipe 12 is placed in collecting container 10, carries The bottom of expects pipe 12 is equipped with elevator pump 13, is higher than the casting bed 14 of water distributor 11 in tank body 6 equipped with top surface.

Wherein, water body enters along original water inlet 7 inside tank body 6, after water distributor 11 is disperseed, in the effect of pressure Under, water body is stretched to 6 top of tank body, and during stretching, water body falls the contaminant filter in water body when passing through casting bed 14, passes through Water body after filter is discharged along water purification outlet 9；

It stretches simultaneously as water body is bottom-up, the impurity content of the casting bed 14 in bottom gradually increases, at this point, opening The elevator pump 13 of 6 bottom of tank body is opened, the sand body containing impurity is promoted in collecting container 10 by elevator pump 13, in collecting container 10 Water purification sand body is rinsed, clean sand body is settled down to inside tank body 6, the sewage after fine sand along outlet of sewer 8 be discharged, such shape Constantly that water body filtration is clean at cyclic process, in addition the bottom of tank body 6 can be equipped with opening, for overhauling elevator pump 13 And replace sand body.

Specifically, the bottom of collecting container 10 is equipped with the sand-washing device 15 communicated therewith, sand-washing device 15 is to be set in extraction pipe The delivery pipe in 12 outsides, the longitudinal section of delivery pipe are waveform, corrugated sand-washing device 15 make sand body during deposition between Gap increases, and running orbit constantly changes, be conducive to upward water purification sand body is rinsed it is more thorough.

Wherein referring to Fig. 3, the bottom side of water distributor 11, which is additionally provided with, leads sand hopper 16, and the shape for leading sand hopper 16 is whole gradual downwards Widened cone tubular structure leads the bottom that the purpose of sand hopper 16 can make the sand body to settle down be evenly distributed on tank body 6, prevents Sand body is overrun sedimentation, and filter effect is improved.

Preferably, the plane where leading the maximum gauge of sand hopper 16 is straight less than the maximum of the pyramidal structure of the bottom of tank body 6 Plane where diameter, and the inner wall for leading sand hopper 16 and tank body 6 divides there are gap, further reduction sand body sinking speed Every containing containing the different sand body of impurity concentration, reinforce filter effect.

Finally it should be noted that：Above-described each embodiment is merely to illustrate the technical solution of the utility model, rather than It is limited；Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art It should be understood that：It can still modify to the technical solution recorded in previous embodiment, or to which part or whole Technical characteristic carries out equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution the utility model The range of each embodiment technical solution.

Claims (10)

1. a kind of MVR evaporations divide the pretreatment system of salt, it is characterised in that：Including original fluid container, aerator, impurity removing equipment, sink Shallow lake pond and filter plant；

The original fluid container is sequentially connected aerator, impurity removing equipment, sedimentation basin and filter plant, the outlet connection of filter plant MVR evaporations divide salt equipment；

Wherein impurity removing equipment includes the first blending tank, the second blending tank, akali sulphide tank and molysite tank, and the akali sulphide tank connects institute The first blending tank is stated, first blending tank connects the second blending tank, and the molysite tank connects the second blending tank, and described first is mixed The import for closing tank connects aerator, and the liquid outlet of second blending tank connects sedimentation basin.

2. MVR evaporations as described in claim 1 divide the pretreatment system of salt, it is characterised in that：The sedimentation basin by mixed zone, Flocculation zone and settling zone composition, the bottom of the mixed zone is connected with the water inlet of flocculation zone bottom, in the flocculation zone Equipped with guide shell, the guide shell is corresponding with the water inlet of flocculation zone, and the top side of the settling zone is equipped with water outlet, institute The bottom for stating settling zone is equipped with mud discharging mouth, and the water outlet is equipped with comb block piece, the first stirring is equipped in the mixed zone Device.

3. MVR evaporations as claimed in claim 2 divide the pretreatment system of salt, it is characterised in that：The is equipped in the flocculation zone Two agitating devices, second agitating device are arranged in the inside of the guide shell.

4. MVR evaporations as claimed in claim 3 divide the pretreatment system of salt, it is characterised in that：The guide shell and settling zone Adjacent side is equipped with partition board, and the bottom of the partition board and pond body is equipped with interval.

5. MVR evaporations as claimed in claim 2 divide the pretreatment system of salt, it is characterised in that：The bottom of the sedimentation basin is also Equipped with inclined circulation pipe, the circulation pipe connects the water inlet of the flocculation zone, and the circulation pipe is equipped with circulating pump.

6. MVR evaporations as described in claim 1 divide the pretreatment system of salt, it is characterised in that：The filter plant includes sand Equipment is filtered, the sand filtration apparatus is sequentially connected neutralization pond and refined filtration equipment, and wherein neutralization pond is acid-base accommodation equipment, refined filtration equipment For filter.

7. MVR evaporations as claimed in claim 6 divide the pretreatment system of salt, it is characterised in that：The sand filtration apparatus includes bottom Portion is the tank body of pyramidal structure, and the outside of the tank body is equipped with original water inlet, outlet of sewer and water purification outlet, the tank body Inner top side is equipped with the collecting container being connected to tank interior, and the bottom of the collecting container connects outlet of sewer, described to catchment The top of container connects water purification outlet, and the water distributor being connect with original water inlet is equipped in the tank body, is set in the middle part of the tank body There is extraction pipe, be placed at the top of the extraction pipe in the collecting container, the bottom of the extraction pipe is equipped with elevator pump, the tank It is higher than the casting bed of water distributor equipped with top surface in vivo.

8. MVR evaporations as claimed in claim 7 divide the pretreatment system of salt, it is characterised in that：The bottom of the collecting container Equipped with the sand-washing device communicated therewith, the sand-washing device is the delivery pipe being set on the outside of extraction pipe, and delivery pipe is that longitudinal section is wave Shape wave.

9. MVR evaporations as claimed in claim 7 divide the pretreatment system of salt, it is characterised in that：The bottom side of the water distributor is also Equipped with sand hopper is led, the shape for leading sand hopper is the whole cone tubular structure being gradually expanded downwards.

10. MVR evaporations as claimed in claim 9 divide the pretreatment system of salt, it is characterised in that：The maximum for leading sand hopper is straight Plane where diameter leads sand hopper and tank body less than the plane where the maximum gauge of the pyramidal structure of the bottom of the tank body There are gaps for inner wall.