CN205710029U - Heavy metal waste water treatment system - Google Patents
Heavy metal waste water treatment system Download PDFInfo
- Publication number
- CN205710029U CN205710029U CN201620415606.6U CN201620415606U CN205710029U CN 205710029 U CN205710029 U CN 205710029U CN 201620415606 U CN201620415606 U CN 201620415606U CN 205710029 U CN205710029 U CN 205710029U
- Authority
- CN
- China
- Prior art keywords
- waste water
- heavy metal
- mud
- sludge
- treatment system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 21
- 239000010814 metallic waste Substances 0.000 title claims abstract description 16
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 16
- 239000010802 sludge Substances 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 238000004062 sedimentation Methods 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000002351 wastewater Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 19
- 239000010865 sewage Substances 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 7
- 239000012190 activator Substances 0.000 claims description 4
- 239000008394 flocculating agent Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 abstract description 10
- 238000001556 precipitation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003814 drug Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000001376 precipitating effect Effects 0.000 abstract description 3
- 230000006911 nucleation Effects 0.000 abstract description 2
- 238000010899 nucleation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 238000009388 chemical precipitation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The open a kind of heavy metal waste water treatment system of this utility model, including the regulating reservoir being sequentially connected with by pipeline, reaction tank, sedimentation tank and PH adjust back pond, sludge return pipe it is provided with between sedimentation tank and reaction tank, the mud entrance point of sludge return pipe connects with sedimentation tank, the sludge outlet end of sludge return pipe connects with described reaction tank, using the beneficial effects of the utility model is that a precipitating sludge backflow part for sedimentation tank is to reaction tank, the medicament that the mud of backflow can make excess add is fully used, and create precipitate nucleation condition for reaction tank waste water, accelerate the speed of precipitation, sedimentation effect can be improved, make water outlet so clear that you can see the bottom and precipitant can be reduced, flocculant usage respectively reaches 30%.
Description
Technical field
This utility model relates to technical field of sewage, is specifically related to a kind of heavy metal waste water treatment system.
Background technology
Chemical precipitation method is a kind for the treatment of technology that heavy metal wastewater thereby is the most frequently used, and its handling principle is by adding
The pH value of sewage is also transferred to optimal reaction range by precipitant so that it is react with the heavy metal ion in sewage
Generate precipitate, and add flocculant make generation fine precipitates knot great achievement be prone to precipitation floc sedimentation, then
Precipitating from flowing into sedimentation tank, supernatant standard discharge, mud then enters sludge concentration tank, concentrated after
After sludge dewatering equipment is dehydrated, outward transport is disposed again.
The subject matter that this technology has been deposited at present is:
1. precipitant typically needs excess to add, and chemical feeding quantity is big, and not only operating cost is high, and overdose of medicine agent
Entering mud, cause mud handling capacity big, dispose difficulty, the wasting of resources is big.
2. the precipitate settling property and the flocculating property that are generated by chemical reaction are poor, it is generally required to add bigger
The flocculant of amount carries out flocculation reaction, so that the precipitate that chemical reaction generates flocculates into the floc sedimentation being prone to precipitation,
Adding in a large number of flocculant further add operating cost.
3. process effluent quality unstable, typically need to be transferred to relatively the pH value of sewage in reaction and precipitation process
High (such as about 8-9), sewage after precipitate and separate again acid adding the pH value of sewage is transferred to neutrality, due to
Acid adding caustic dosage is relatively big, therefore increases operating cost further, and makes the salinity of process water outlet be significantly increased,
Process effluent quality the most unstable.
Utility model content
For solving above technical problem, this utility model provides a kind of heavy metal waste water treatment system, this system
Add medicament by increasing sludge reflux to reach saving, reduce operating cost, improve the purpose for the treatment of effect.
Technical scheme is as follows: a kind of heavy metal waste water treatment system, it it is critical only that: includes being connected successively by pipeline
The regulating reservoir, reaction tank, sedimentation tank and the PH that connect adjust back pond, are provided with mud between described sedimentation tank and reaction tank
Reflux line, the mud entrance point of this sludge return pipe connects with described sedimentation tank base sludge district, described
The sludge outlet end of sludge return pipe connects with described reaction tank.Use the technical program heavy metal wastewater thereby certainly
Stream enters regulating reservoir and carries out water quality and quantity regulation, and the waste water after regulating water quality enters reaction tank, refluxes with sedimentation tank
Through addition activator activation mud mix, precipitant and the heavy metal ion in sewage
Reaction generates precipitate, and then gravity flow entrance sedimentation tank carries out mud-water separation, and supernatant after precipitation is certainly
Stream enters PH and adjusts back pond, and qualified discharge after acid adding tune pH value to neutrality, the design is in original technological process
Upper increase sludge reflux operation, and common processing system is in order to obtain preferable treatment effect, typically flocculates
Agent chemical feeding quantity has certain excess, and flocculates in entrance mud, and the processing system that this utility model provides
By sludge reflux, in mud, original flocculant can be reused, thus chemical feeding quantity can be corresponding again
Reduce, and the mud of backflow in sedimentation tank, can be that reaction provides nucleus condition, enhanced flocculation speed and effect
Really.
Further, between above-mentioned regulating reservoir and reaction tank, it is provided with elevator pump, the liquid inlet of this elevator pump and institute
State regulating reservoir liquid outlet connect, the liquid outlet of described elevator pump by lifting liquid pipeline with described instead
The liquid inlet of Ying Chi connects.After using the waste water in regulating reservoir to be adjusted water quality available elevator pump promote into
Enter reaction tank.
Above-mentioned sedimentation tank is connected by mud discharge line has sludge-tank, the mud of described sludge return pipe to enter
Mouth end connects with described mud discharge line, and the sludge outlet end of described sludge return pipe carries with described liquid
Rise pipeline communication.Using the mud in this programme sedimentation tank to be discharged into sludge-tank, the mud through refluxing can be with tune
In joint pond liquid mixing out uniformly after another and enter reaction tank.
The flow of the mud of upper described sludge return pipe backflow is the discharge of sewage promoted through described elevator pump
20-30%.Using the sludge quantity of this programme backflow and processed waste water reasonable mixture ratio, the mud of backflow is neither
Can also be formed for acceleration chemical precipitation while of increasing the load of system and nucleus is provided, thus intensive treatment effect,
And reach to save the purpose of medicine operating cost.
Above-mentioned sludge return pipe is provided with activator throwing device.Use the work that this scheme has been lacked by interpolation
Agent can the performance of remaining utility in activated sludge.
Above-mentioned reaction tank connects flocculating agent feeding device and precipitant throwing device.Use the design backflow
Mud carries and is activated material the harmful substance in pending waste water can not be made effectively to be precipitated, wad a quilt with cotton
Solidifying, the most also need to add certain precipitant, flocculant, and the pH value of sewage is adjusted so that it is
Optimal pH range (general slightly biased alkalescence), precipitant and the heavy metal ion in sewage occur chemistry anti-
Should generate precipitate, but owing to precipitate is the most tiny, settling property is poor, the purpose adding flocculant is exactly
Make tiny precipitate flocculate into the floc sedimentation being prone to precipitate by flocculation, strengthen the settling property of pollutant.
Above-mentioned PH readjustment pond connects means for feeding acid.This programme supernatant gravity flow after precipitation is used to enter
PH adjusts back pond, can qualified discharge after acid adding tune pH value to neutrality.
Above-mentioned sludge-tank connects pressure filter.Use the mud in this design sludge-tank through pressure filter filter-press dehydration
Rear outward transport is disposed.
Above-mentioned regulating reservoir connects influent waste water pipeline, and described PH readjustment pond connects water purification discharge line.Adopt
With the convenient water inlet of this design and draining.
Beneficial effect: employing the beneficial effects of the utility model are that the precipitating sludge of sedimentation tank refluxes a part extremely
Reaction tank, the medicament that the mud of backflow can make excess add is fully used, and is that the precipitation of reaction tank is anti-
Answer waste water to create precipitate nucleation condition, accelerate the speed of precipitation, sedimentation effect can be improved, make water outlet clear
Clear see the bottom, and precipitant, flocculant usage can be reduced and respectively reach 30%.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
As it is shown in figure 1, a kind of heavy metal waste water treatment system, including the regulating reservoir 1 being sequentially connected with by pipeline,
Pond 5 adjusted back by reaction tank 3, sedimentation tank 4 and PH, and described regulating reservoir 1 connects influent waste water pipeline, described
PH readjustment pond 5 connects water purification discharge line, is provided with elevator pump 2 between described regulating reservoir 1 and reaction tank 3,
The liquid inlet of this elevator pump 2 is connected with the liquid outlet of described regulating reservoir 1, the liquid of described elevator pump 2
Outlet is connected by the liquid inlet of lifting liquid pipeline 10 with described reaction tank 3, and described sedimentation tank 4 is with anti-
Answer and between pond 3, be provided with sludge return pipe 11, the mud entrance point of this sludge return pipe 11 and described precipitation
Base sludge district, pond 4 connects, and the sludge outlet end of described sludge return pipe 11 connects with described reaction tank 3,
Described sludge return pipe 11 is provided with activator throwing device 9.
Described reaction tank 3 connects flocculating agent feeding device 8 and precipitant throwing device 14, and described PH returns
Adjusting pond 5 to connect and have means for feeding acid 13, described sedimentation tank 4 is connected by mud discharge line 12 sludge-tank 7,
This sludge-tank 7 connects pressure filter 6, and the mud entrance point of described sludge return pipe 11 is arranged with described mud
Going out pipeline 12 to connect, the sludge outlet end of described sludge return pipe 11 is with described lifting liquid pipeline 10 even
Logical, it is the sewage stream promoted through described elevator pump 2 through the flow of the mud of described sludge return pipe 11 backflow
The 20-30% of amount.
Last it should be noted that foregoing description is only preferred embodiment of the present utility model, this area
Those of ordinary skill is under enlightenment of the present utility model, without prejudice to this utility model objective and claim
Under premise, representing as can making multiple types, such conversion each falls within protection domain of the present utility model
Within.
Claims (9)
1. a heavy metal waste water treatment system, it is characterised in that: include the regulation being sequentially connected with by pipeline
Pond (1), reaction tank (3), sedimentation tank (4) and PH readjustment pond (5), described sedimentation tank (4) and reaction
Be provided with sludge return pipe (11) between pond (3), the mud entrance point of this sludge return pipe (11) with
Described sedimentation tank (4) base sludge district connects, the sludge outlet end of described sludge return pipe (11) and institute
State reaction tank (3) connection.
Heavy metal waste water treatment system the most according to claim 1, it is characterised in that: described regulating reservoir
(1) elevator pump (2), the liquid inlet of this elevator pump (2) and described tune and it are provided with between reaction tank (3)
The liquid outlet of joint pond (1) connects, and the liquid outlet of described elevator pump (2) passes through lifting liquid pipeline (10)
It is connected with the liquid inlet of described reaction tank (3).
Heavy metal waste water treatment system the most according to claim 2, it is characterised in that: described sedimentation tank
(4) there is sludge-tank (7) by mud discharge line (12) connection, described sludge return pipe (11)
Mud entrance point connects with described mud discharge line (12), the mud of described sludge return pipe (11)
The port of export connects with described lifting liquid pipeline (10).
Heavy metal waste water treatment system the most according to claim 1, it is characterised in that: described mud returns
Flow tube road (11) is provided with activator throwing device (9).
Heavy metal waste water treatment system the most according to claim 1, it is characterised in that: described reaction tank
(3) connection has flocculating agent feeding device (8) and precipitant throwing device (14).
Heavy metal waste water treatment system the most according to claim 1, it is characterised in that: described PH returns
Adjust pond (5) to connect and have means for feeding acid (13).
Heavy metal waste water treatment system the most according to claim 1, it is characterised in that: described sludge-tank
(7) connection has pressure filter (6).
Heavy metal waste water treatment system the most according to claim 1, it is characterised in that: described regulating reservoir
(1) connection has influent waste water pipeline, and described PH readjustment pond (5) connects water purification discharge line.
Heavy metal waste water treatment system the most according to claim 3, it is characterised in that: through described mud
The 20-30% that flow is the discharge of sewage promoted through described elevator pump (2) of the mud that reflux line (11) refluxes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620415606.6U CN205710029U (en) | 2016-05-10 | 2016-05-10 | Heavy metal waste water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620415606.6U CN205710029U (en) | 2016-05-10 | 2016-05-10 | Heavy metal waste water treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205710029U true CN205710029U (en) | 2016-11-23 |
Family
ID=57304767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620415606.6U Expired - Fee Related CN205710029U (en) | 2016-05-10 | 2016-05-10 | Heavy metal waste water treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205710029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112979000A (en) * | 2021-03-05 | 2021-06-18 | 武汉汇森创新科技有限公司 | Secondary bipolar plate wastewater treatment device |
-
2016
- 2016-05-10 CN CN201620415606.6U patent/CN205710029U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112979000A (en) * | 2021-03-05 | 2021-06-18 | 武汉汇森创新科技有限公司 | Secondary bipolar plate wastewater treatment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |