CN209259827U - A kind of desulfurization wastewater softening pretreatment unit - Google Patents

Abstract

The utility model discloses a kind of desulfurization wastewaters to soften pretreatment unit, including demineralization chamber, expansion chamber and PH regulation room, the side of the demineralization chamber is connected to by first pipe with expansion chamber, side of the expansion chamber far from demineralization chamber is connected to by second pipe with PH regulation room, the top of the expansion chamber and PH regulation room is fixedly connected with the first medicament chamber and second medicament room respectively, the bottom of first medicament chamber is connected to by third pipeline with demineralization chamber, the bottom of the second medicament room is connected to by the 4th pipeline with PH regulation room, connecting plate is fixedly connected between the second pipe and PH regulation room opposite sides, the surface of the connecting plate is fixedly connected with air blower, the utility model relates to technical field of waste water processing.A kind of desulfurization wastewater softens pretreatment unit, solves traditional desulfurization wastewater processing and generallys use chemical precipitation method and gets rid of various heavy metal ion in water, and relative costs are higher, and the problem of can not effectively remove calcium and magnesium ion in waste water.

Description

A kind of desulfurization wastewater softening pretreatment unit

Technical field

The utility model relates to technical field of waste water processing, specially a kind of desulfurization wastewater softens pretreatment unit.

Background technique

Desulfurization wastewater is mainly the discharge water on absorption tower during boiler smoke wet desulphurization (limestone/gypsum method), is The balance for maintaining desulfurizer serum recycle system substance, preventing soluble fraction i.e. cl concn in flue gas is more than specified value and guarantor Demonstrate,prove gypsum quality, it is necessary to a certain amount of waste water is discharged from system, waste water is in gypsum dehydration and cleaning system, waste water The impurity contained mainly includes suspended matter, oversaturated sulphite, sulfate and heavy metal, wherein being much national environmental protection The first pollutant of strict control is required in standard, and contents of many kinds of heavy metal ion and very high concentrations are contained in desulfurization wastewater Calcium, magnesium, sulfate radical and chloride ion.The processing of traditional desulfurization wastewater generallys use chemical precipitation method and gets rid of each heavy metal species in water Ion, relative costs are higher, and can not effectively remove calcium and magnesium ion in waste water.

Utility model content

(1) the technical issues of solving

In view of the deficiencies of the prior art, the utility model provides a kind of desulfurization wastewater softening pretreatment unit, solves The processing of traditional desulfurization wastewater generallys use chemical precipitation method and gets rid of various heavy metal ion in water, and relative costs are higher, and The problem of calcium and magnesium ion in waste water can not be effectively removed.

(2) technical solution

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of desulfurization wastewater softening is pre- The side of processing unit, including demineralization chamber, expansion chamber and PH regulation room, the demineralization chamber is connected by first pipe and expansion chamber Logical, side of the expansion chamber far from demineralization chamber is connected to by second pipe with PH regulation room, the expansion chamber and PH regulation room Top be fixedly connected with the first medicament chamber and second medicament room respectively, the bottom of first medicament chamber by third pipeline with The bottom of demineralization chamber's connection, the second medicament room is connected to by the 4th pipeline with PH regulation room, the second pipe and PH tune It is fixedly connected with connecting plate between section room opposite sides, the surface of the connecting plate is fixedly connected with air blower, the air blower Air outlet be communicated with the 5th pipeline, the both ends of the 5th pipeline have been respectively communicated with the first aeration tube and the second aeration tube, institute The air inlet for stating air blower is connected to outside cooling flue gas device.

Preferably, fixed frame is fixedly connected at the top of the demineralization chamber, the inner wall of the fixed frame is fixedly connected with electricity Machine, the output end of the motor are fixedly connected with shaft, and the surface of the shaft is equidistantly fixedly connected with paddle.

Preferably, milk of lime medicament and sodium sulphate medicament are stored respectively in first medicament chamber and second medicament room, The milk of lime medicament is the milk of lime emulsion that mass concentration is 1%~30%, and it is 1% that the sodium sulphate medicament, which is mass concentration, ~30% metabisulfite solution, and the metabisulfite solution temperature is 25~30 DEG C, the cooling flue-gas temperature is 25~60 DEG C.

Preferably, the top side of the demineralization chamber is communicated with inlet tube, the bottom of the demineralization chamber and expansion chamber, PH tune One side bottom of section room is communicated with the first drain pipe, and the PH regulation room is communicated with second row far from the side of the first drain pipe The middle part of liquid pipe, first drain pipe and the second drain pipe is communicated with the first valve.

Preferably, second is fixedly connected in the middle part of the first pipe, second pipe, third pipeline and the 4th pipeline Valve, the 5th pipeline two sides corresponding with the first aeration tube and the second aeration tube have been respectively communicated with third valve and the 4th Valve.

Preferably, the bottom of the demineralization chamber, expansion chamber and PH regulation room is fixedly connected to support frame, the softening The inner wall of room, expansion chamber and PH regulation room is fixedly connected to PH detector.

(3) beneficial effect

The utility model provides a kind of desulfurization wastewater softening pretreatment unit.Have it is following the utility model has the advantages that

(1), the desulfurization wastewater softens pretreatment unit, by being fixedly connected with fixed frame, fixed frame at the top of demineralization chamber Inner wall be fixedly connected with motor, the output end of motor is fixedly connected with shaft, and the surface of shaft is equidistantly fixedly connected with stirring The bottom of leaf, the first medicament chamber is connected to by third pipeline with demineralization chamber, has been reached and has been driven shaft to rotate using motor, shaft band Dynamic paddle rotation, then cooperate the indoor milk of lime emulsion of the first medicament, it realizes that medicament is stirred with waste water, passes through Desulfurization wastewater softening is realized in chemical reaction, is improved softening efficiency, is reduced its hardness, cooperate the monitoring of PH detector, controls in time Dosing reduces medicament and is excessively used, save the cost.

(2), the desulfurization wastewater softens pretreatment unit, is connected by the side of demineralization chamber by first pipe and expansion chamber Logical, the surface of connecting plate is fixedly connected with air blower, and the air outlet of air blower is communicated with the 5th pipeline, the both ends point of the 5th pipeline It is not communicated with the first aeration tube and the second aeration tube, the air inlet of air blower is connected to outside cooling flue gas device, has reached benefit Outside cooling flue gas is transported to expansion chamber and PH by the 5th the first aeration tube of tube fit and the second aeration tube with air blower On the one hand regulation room is closed in the calcium hydroxide in the carbon dioxide realization and waste water in cooperation cooling flue gas and is settled, on the other hand Indoor pH value being adjusted to PH according to PH detector to detect, the cooperation indoor metabisulfite solution of second medicament is neutralized with it, It realizes to the accurate control of pH value, realizes waste water softening, avoid the pollution to ambient enviroment.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model structure top view.

In figure: 1 demineralization chamber, 2 expansion chambers, 3PH regulation room, 4 first pipes, 5 second pipes, 6 first medicament chamber, 7 second Medicament chamber, 8 third pipelines, 9 the 4th pipelines, 10 connecting plates, 11 air blowers, 12 the 5th pipelines, 13 first aeration tubes, 14 second expose Tracheae, 15 fixed frames, 16 motors, 17 shafts, 18 paddles, 19 inlet tubes, 20 first drain pipes, 21 second drain pipes, 22 One valve, 23 second valves, 24 third valves, 25 the 4th valves, 26 support frames, 27PH detector.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of desulfurization wastewater softening pretreatment unit, packet Demineralization chamber 1, expansion chamber 2 and PH regulation room 3 are included, the side of demineralization chamber 1 is connected to by first pipe 4 with expansion chamber 2, expansion chamber 2 Side far from demineralization chamber 1 is connected to by second pipe 5 with PH regulation room 3, facilitates waste water to circulate in the device, 2 He of expansion chamber The top of PH regulation room 3 is fixedly connected with the first medicament chamber 6 and second medicament room 7 respectively, realizes and waste water reaction, purification are useless The bottom of water, the first medicament chamber 6 is connected to by third pipeline 8 with demineralization chamber 1, and the bottom of second medicament room 7 passes through the 4th pipeline 9 It is connected to PH regulation room 3, is fixedly connected with connecting plate 10 between 3 opposite sides of second pipe 5 and PH regulation room, connecting plate 10 Surface is fixedly connected with air blower 11, and the air outlet of air blower 11 is communicated with the 5th pipeline 12, the both ends difference of the 5th pipeline 12 It is communicated with the first aeration tube 13 and the second aeration tube 14, the air inlet of air blower 11 is connected to outside cooling flue gas device, convenient Outside cooling flue gas enters device, improves effect of settling, the top of demineralization chamber 1 is fixedly connected with fixed frame 15, fixed frame 15 Inner wall is fixedly connected with motor 16, and the output end of motor 16 is fixedly connected with shaft 17, and the surface of shaft 17 is equidistantly fixedly connected There is paddle 18, realize waste water uniform stirring inside demineralization chamber, sufficiently contacted with medicament, improves reaction efficiency, the first medicament chamber 6 With milk of lime medicament and sodium sulphate medicament are stored in second medicament room 7 respectively, milk of lime medicament is that mass concentration is 1%~30% Milk of lime emulsion, sodium sulphate medicament is the metabisulfite solution that mass concentration is 1%~30%, and metabisulfite solution temperature is 20 ~35 DEG C, cooling flue-gas temperature is 25~60 DEG C, realizes and softens to desulfurization wastewater, and the top side of demineralization chamber 1 is communicated with feed liquor Pipe 19 facilitates waste water to enter device, and a side bottom of the bottom of demineralization chamber 1 and expansion chamber 2, PH regulation room 3 is communicated with first Drain pipe 20, PH regulation room 3 are communicated with the second drain pipe 21 far from the side of the first drain pipe 20, facilitate and complete liquid and dirt row Out, the middle part of the first drain pipe 20 and the second drain pipe 21 is communicated with the first valve 22, first pipe 4, second pipe 5, The middle part of three pipelines 8 and the 4th pipeline 9 is fixedly connected to the second valve 23, the 5th pipeline 12 and the first aeration tube 13 and second The corresponding two sides of aeration tube 14 have been respectively communicated with third valve 24 and the 4th valve 25, facilitate control pipe switch, demineralization chamber 1, the bottom of expansion chamber 2 and PH regulation room 3 is fixedly connected to support frame 26, and device is facilitated to fix, demineralization chamber 1,2 and of expansion chamber The inner wall of PH regulation room 3 is fixedly connected to PH detector 27, convenient to monitor in real time to pH value.

In use, device is fixed device by support frame 26, then desulfurization wastewater is connected to inlet tube 19, is then led to Crossing motor 16 drives shaft 17 to rotate, and shaft 17 drives paddle 18 to rotate, and cooperates the medicament in the first medicament chamber 6 to demineralization chamber 1 waste water carries out uniform stirring, improves reaction efficiency, then opens the second valve 23, and the waste water after reaction is allowed to enter expansion chamber 2, outside cooling flue gas is then transported to the first aeration tube 13 and the second aeration tube by the 5th pipeline 12 using air blower 11 It in 14, is reacted using the carbon dioxide inside flue gas with excessive milk of lime emulsion, accelerates substance sedimentation, subsequently into PH tune Section room 3 carries out last neutralization, and the medicament being added in second medicament room 7 is chosen whether according to pH sensor.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element ".

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (6)

1. a kind of desulfurization wastewater softens pretreatment unit, including demineralization chamber (1), expansion chamber (2) and PH regulation room (3), feature Be: the side of the demineralization chamber (1) is connected to by first pipe (4) with expansion chamber (2), and the expansion chamber (2) is far from softening The side of room (1) is connected to by second pipe (5) with PH regulation room (3), the top of the expansion chamber (2) and PH regulation room (3) It is respectively fixedly connected with the first medicament chamber (6) and second medicament room (7), the bottom of first medicament chamber (6) passes through third pipe Road (8) is connected to demineralization chamber (1), and the bottom of the second medicament room (7) is connected to by the 4th pipeline (9) with PH regulation room (3), It is fixedly connected with connecting plate (10) between the second pipe (5) and PH regulation room (3) opposite sides, the connecting plate (10) Surface is fixedly connected with air blower (11), and the air outlet of the air blower (11) is communicated with the 5th pipeline (12), the 5th pipe The both ends in road (12) have been respectively communicated with the first aeration tube (13) and the second aeration tube (14), the air inlet of the air blower (11) with Outside cooling flue gas device connection.

2. a kind of desulfurization wastewater according to claim 1 softens pretreatment unit, it is characterised in that: the demineralization chamber (1) Top be fixedly connected with fixed frame (15), the inner wall of the fixed frame (15) is fixedly connected with motor (16), the motor (16) output end is fixedly connected with shaft (17), and the surface of the shaft (17) is equidistantly fixedly connected with paddle (18).

3. a kind of desulfurization wastewater according to claim 1 softens pretreatment unit, it is characterised in that: first medicament chamber (6) and in second medicament room (7) milk of lime medicament and sodium sulphate medicament are stored respectively.

4. a kind of desulfurization wastewater according to claim 1 softens pretreatment unit, it is characterised in that: the demineralization chamber (1) Top side be communicated with inlet tube (19), the bottom of the demineralization chamber (1) and the side bottom of expansion chamber (2), PH regulation room (3) Portion is communicated with the first drain pipe (20), and the PH regulation room (3) is communicated with second row far from the side of the first drain pipe (20) The middle part of liquid pipe (21), first drain pipe (20) and the second drain pipe (21) is communicated with the first valve (22).

5. a kind of desulfurization wastewater according to claim 1 softens pretreatment unit, it is characterised in that: the first pipe (4), it is fixedly connected to the second valve (23) in the middle part of second pipe (5), third pipeline (8) and the 4th pipeline (9), described Five pipelines (12) two sides corresponding with the first aeration tube (13) and the second aeration tube (14) have been respectively communicated with third valve (24) With the 4th valve (25).

6. a kind of desulfurization wastewater according to claim 1 softens pretreatment unit, it is characterised in that: the demineralization chamber (1), The bottom of expansion chamber (2) and PH regulation room (3) is fixedly connected to support frame (26), the demineralization chamber (1), expansion chamber (2) and The inner wall of PH regulation room (3) is fixedly connected to PH detector (27).