CN108423891A - A kind of sewage disposal system and its processing method containing zinc ion - Google Patents
A kind of sewage disposal system and its processing method containing zinc ion Download PDFInfo
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- CN108423891A CN108423891A CN201810504832.5A CN201810504832A CN108423891A CN 108423891 A CN108423891 A CN 108423891A CN 201810504832 A CN201810504832 A CN 201810504832A CN 108423891 A CN108423891 A CN 108423891A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of sewage disposal system and processing method containing zinc ion, the processing system adjusts pond and the adjustment ponds the 2nd pH to adjust pH value step by step using the first pH, adjustment is more accurate, then go over unprecipitated suspended matter by sand filter and carbon filtering pool, metal cation is replaced finally by ionic reaction pond, the sewage disposal system can effectively remove zinc ion, make sewage qualified discharge.
Description
Technical field
The present invention relates to a kind of sewage disposal systems containing zinc ion, also relate to the processing side of the sewage disposal system
Method.
Background technology
Instantly, have in the raw materials technology of part metals drawing mill using arriving galvanized steel, the pickling galvanized steel the step of
In will produce zinc ion.And the discharge standard of zinc ion is 1mg/L at present, it is therefore desirable at the waste water containing zinc ion
Reason, keeps its up to standard.However since the precipitate zinc hydroxide of zinc is amphoteric hydroxide, amphoteric hydroxide is both dissolved in strong acid,
It is dissolved in highly basic again, therefore when chemical Treatment contains the sewage of zinc ion, difficulty is big, zinc ion is more difficult to be completely removed, and is held
Easily there is exceeded phenomenon.
Invention content
The technical problem to be solved by the present invention is to：A kind of sewage disposal system containing zinc ion, the sewage disposal are provided
System can effectively remove zinc ion, make sewage qualified discharge.
Another technical problem to be solved by this invention is：A kind of sewage disposal system containing zinc ion, the dirt are provided
Water treatment system can effectively remove zinc ion, make sewage qualified discharge.
In order to solve the above technical problems, the technical scheme is that：A kind of sewage disposal system containing zinc ion, including
The entrance of regulating reservoir, the regulating reservoir is connect with wastewater influent manifold；
First pH adjusts pond, and the entrance in the first pH adjustment pond is connected to the outlet conduit of regulating reservoir, and the first pH is adjusted on pond
It is provided with pH meter and first and adds alkali adding tube, first adds alkali adding tube and add alkali system connectivity；
First coagulation reaction tank, pipeline connects between the entrance of first coagulation reaction tank and the outlet in the first pH adjustment pond
It is logical, PAC addition nozzles and PAM addition nozzles are provided in the first coagulation reaction tank；
First inclined-tube sedimentation tank, pipeline connects between the entrance of first inclined-tube sedimentation tank and the outlet of the first coagulation reaction tank
Logical, the top of the first inclined-tube sedimentation tank is provided with supernatant outlet, and bottom is provided with sludge outlet；
2nd pH adjusts pond, the entrance in the 2nd pH adjustment pond and the supernatant outlet of first inclined-tube sedimentation tank it
Between pipeline be connected to, be provided with pH meter and second plus alkali pipe on the 2nd pH adjustment pond, second plus alkali Guan Yujia alkali system connectivities；It is described
Second plus alkali pipe include that the several groups being set in the 2nd pH adjustment pond add alkali adding tube group, every group adds the alkali adding tube group to include
The vertical plus alkali pipe being vertically arranged is provided at least two distribution pipeline sections vertically plus on alkali pipe, distributes the caliber of pipeline section more than perpendicular
Straight plus alkali pipe caliber, each distribute on pipeline section are evenly distributed in several horizontal plus alkali pipes, and every level adds alkali Guan Shangjun
It is provided with four rows and adds alkali hole, which adds alkali hole to be located at horizontal plus alkali pipe upside, downside, left side, right side；
Second coagulation reaction tank, pipeline connects between the entrance of second coagulation reaction tank and the outlet in the 2nd pH adjustment pond
It is logical, PAC addition nozzles and PAM addition nozzles are provided in second coagulation reaction tank；
Second inclined-tube sedimentation tank, pipeline connects between the entrance of second inclined-tube sedimentation tank and the outlet of the second coagulation reaction tank
Logical, the top of the second inclined-tube sedimentation tank is provided with supernatant outlet, and bottom is provided with sludge outlet；
The quantity of sand filter, the sand filter is two, sewage inlet is provided at the top of each sand filter and wash-off of turning one's coat
Mouthful, the sewage inlet of each sand filter passes through the supernatant outlet of the first water inlet distribution selection pipeline and the second inclined-tube sedimentation tank
Connection；If being provided with dried layer sand grains filtrate in the sand filter, from top to bottom grain size becomes larger the grain size of sand grains filtrate；Each sand filtration
The bottom of pond in pond, which is provided with to turn one's coat, washes mouth, outlet of sewer；
Carbon filtering pool；The quantity of the carbon filtering pool is two, sewage inlet is provided at the top of each carbon filtering pool and wash-off of turning one's coat
Mouthful, the sewage inlet of each carbon filtering pool is connected to by the second water inlet distribution selection pipeline with the outlet of sewer of sand filter；It is described
If being provided with dried layer carbon leaching material in carbon filtering pool, the granularity of carbon leaching material from top to bottom becomes larger；The bottom of pond of each carbon filtering pool
It is provided with to turn one's coat and washes mouth, outlet of sewer；The turning one's coat of the carbon filtering pool washes mouth, turning one's coat for sand filter washes mouth and be with washing
System connection, turning one's coat for the carbon filtering pool washes out mouth, the wash-off mouth of turning one's coat of sand filter is connected to washing water return pipeline.
Ion exchange pond；The quantity in the ion exchange pond is two, and being provided with sewage at the top of each ion exchange pond enters
Mouth and pickling outlet, bottom are provided with outlet of sewer and pickling entrance, and the sewage inlet in the ion exchange pond passes through third
It is connected between water inlet distribution selection pipeline and the outlet of sewer of carbon filtering pool, hydrogen form cation friendship is provided in each ion exchange pond
Resin particle is changed, the pickling entrance in the ion exchange pond is connected with sulfuric acid adding tube, and the pickling outlet is connected with pickling
Liquid recovery tube；
Pond is demodulated, pipeline is connected between the entrance and the outlet of sewer in each ion exchange pond for demodulating pond, is demodulated on pond
Third is provided with to add alkali adding tube and recapture medicament adding tube；
Reuse pool, pipeline is connected between the entrance of the reuse pool and the outlet for demodulating pond, is arranged on reuse pool
There is floss hole；
The sludge outlet of sludge-tank, the entrance of the sludge-tank and the first inclined-tube sedimentation tank, the sludge of the second inclined-tube sedimentation tank
Pipeline is connected between outlet, and the outlet of sludge-tank is connect with filter press.
Preferably, the water wash system includes that washing pumps, and the water inlet pipe of the washing pump is connected to reuse pool, described
The outlet pipe of washing pump turns one's coat with carbon filtering pool wash mouth respectively, turning one's coat for sand filter washes mouth and be connected to, the washing water return pipeline
Water outlet be connected to regulating reservoir.
Preferably, the number of plies of the sand grains filtrate in the sand filter is five layers, and from top to bottom respectively first layer sand grains is filtered
Material, second layer sand grains filtrate, third layer sand grains filtrate, the 4th layer of sand grains filtrate and layer 5 sand grains filtrate, the filter of first layer sand grains
The grain size of material is 0.5-1.2mm, and the grain size of second layer sand grains filtrate is 2-4mm, and the grain size of third layer sand grains filtrate is 4-8mm,
The grain size of 4th layer of sand grains filtrate is 8-16mm, and the grain size of layer 5 sand grains filtrate is 16-32mm.
Preferably, the number of plies of carbon leaching material is five layers, and the layer thickness of carbon leaching material is 50mm, and grain size is from bottom to top
It is arranged as 8-16mm, 4-8mm, 2-4mm, 4-8mm, 8-16mm.
Preferably, the knot of second plus alkali pipe of the 2nd pH regulating reservoirs of first plus the alkali adding tube in the first pH adjustment pond
Structure is identical.
Preferably, pH meter in the adjustment pond the first pH and the 2nd pH regulating reservoirs is equal and to be distributed in different depths by two
Degree.
After using above-mentioned technical proposal, effect of the invention is：The sewage disposal system using precipitating twice, by the
One pH adjusts the pH value of pond adjustment sewage, and then produces the precipitation of zinc hydroxide, to first remove the zinc ion of a part, then
Again by the 2nd pH adjust pond in carry out pH value accurate adjustment, by pH twice adjust, can be excessive to avoid pH value adjusting range and make
At adjustment not in time, meanwhile, by pH twice adjustment can accurate pH value, make its control within the scope of 8.5-9.5, meet zinc
The best precipitated form of ion, and simultaneously, using second plus alkali pipe of special construction can make lye in the shortest time with dirt
Water is sufficiently mixed, and the pH value in entire 2nd pH adjustment pond adjusts completion within the shortest time in this way, then pH meter test point
PH value be accurate, and react the pH value in entire 2nd pH adjustment pond in the shortest possible time, can accomplish in this way
PH value accurately controls.In addition, after by precipitating twice, classified filtering is being carried out using sand filter and carbon filtering pool, is accurately being taken
Go out the unprecipitated suspended particulate in sewage；Finally, after above-mentioned processing, progress ion friendship in ion exchange pond is entered back into
It changes, further takes out zinc ion completely, the zinc ion being discharged in this way can be less than 1mg/L, and addition can be passed through by demodulating in pond
Lye, adjusting water outlet pH value (ion exchange has displaced hydrogen ion in pond, makes water quality in acidity), may then pass through addition weight
Medicament is caught, it is white powder to recapture under medicament room temperature, and solution is colourless transparent liquid, can be strong with metal ion (zinc ion)
Power combines, and generates harmless sludge not soluble in water, when the current all process facilities in road may break down in some stage and
Zinc ion can not be handled up to standard, then need to add to recapture medicament.
Again since the water wash system includes that washing pumps, the water inlet pipe of the washing pump is connected to reuse pool, described
The outlet pipe of washing pump turns one's coat with carbon filtering pool wash mouth respectively, turning one's coat for sand filter washes mouth and be connected to, the washing water return pipeline
Water outlet be connected to regulating reservoir, the water wash system is using the water up to standard in reuse pool as backwash liquid, by turning one's coat
Operation is washed, the activation recovering of the sand grains filtrate in sand filter, the carbon leaching material in carbon filtering pool can be made.
Again since the number of plies of the sand grains filtrate in the sand filter is five layers, from top to bottom respectively first layer sand grains is filtered
Material, second layer sand grains filtrate, third layer sand grains filtrate, the 4th layer of sand grains filtrate and layer 5 sand grains filtrate, the filter of first layer sand grains
The grain size of material is 0.5-1.2mm, and the grain size of second layer sand grains filtrate is 2-4mm, and the grain size of third layer sand grains filtrate is 4-8mm,
The grain size of 4th layer of sand grains filtrate is 8-16mm, and the grain size of layer 5 sand grains filtrate is 16-32mm, and this arrangement can be more
Added with effect and it is reliable stack sand grains filtrate, grain size it is big be placed on bottom, grain size stacking is then gradually reduced, then small particle
Sand grains filtrate will be filled in the gap between the large-sized sand grains filtrate of lower part, so i.e. ensure that sewage disposal imitate
Fruit, while also ensuring enough water flows.
Again since the first pH adjusts the knot of second plus alkali pipe of the first of pond plus the 2nd pH regulating reservoirs of alkali adding tube
Structure is identical, in this way, the lye in the first pH adjustment pond more rapid can also be mixed with sewage, pH value adjustment is also rapider, more accurate
Really.
To solve above-mentioned second technical problem, the technical scheme is that：It provides at a kind of sewage containing zinc ion
Reason method, the sewage water treatment method have used above-mentioned sewage disposal system, have included the following steps：
S1, the sewage containing zinc ion is sent into regulating reservoir and is collected；
S2, the sewage in regulating reservoir is sent in the first pH adjustment pond, hydroxide is added using first plus alkali adding tube
Sodium, and pH value is detected using pH meter, the pH value in control the first pH adjustment pond is 6-9；
S3, the sewage in the first pH adjustment pond is sent in the first coagulation reaction tank, successively adds 10% mass ratio
PAC solution and 0.1% mass ratio PAM solution, the wherein additive amount of PAC are 100-400ppm, and the additive amount of PAM is 1-5ppm；
S4, the sewage in the first coagulation reaction tank is sent in the first inclined-tube sedimentation tank and is precipitated 2-3 hours, supernatant is sent
Enter to the 2nd pH and adjust in pond, the sludge of bottom of pond is discharged into sludge-tank；
S5, it is adjusted in pond by second plus the 2nd pH of alkali pipe pair and adds sodium hydroxide, wherein sodium hydroxide solution passes through perpendicular
It directly plus after the entrance of alkali pipe is assigned in each horizontal plus alkali pipe, level plus alkali pipe are in different height, and sodium hydroxide solution leads to
It crosses each row plus alkali hole is evenly spread in the 2nd pH adjustment pond, monitoring the 2nd pH using pH meter adjusts the pH value in pond, and makes pH value
Control is between 8.5-9.5；
S6, the sewage after the 2nd pH adjustment pond adjustment enter in the second coagulation reaction tank, successively add 10% mass
The PAC solution of ratio and 0.1% mass ratio PAM solution, the wherein additive amount of PAC are 100-400ppm, and the additive amount of PAM is 1-
5ppm；
Sewage in S7, the second coagulation reaction tank is sent in the second inclined-tube sedimentation tank and precipitates 2-3 hours, and supernatant is sent into
Into one of sand filter, two sand filter a preparation and a use, the suspended particulate in sewage is flowed into after sand filter filters
It enters back into carbon filtering pool and filters in carbon filtering pool, carbon filtering pool a preparation and a use, the sludge in the second inclined-tube sedimentation tank is sent to sludge-tank
In, final sludge is sent into filter press compression；
S8, it is sent in ion exchange pond by sand filter and the filtered sewage of carbon filtering pool, ion exchange is filled in pond
There is hydrogen type cation exchange resin, the zinc ion retained in sewage is exchanged with the hydrogen ion in hydrogen type cation exchange resin,
Final zinc ion is attracted in exchanger resin；
S9, the sewage after ion exchange, which are sent to, to be demodulated in pond, and the pH value demodulated in pond is detected using pH meter, is passed through
Sodium hydroxide solution control ph is added between 6-9；
S10, the sewage demodulated in pond pass through direct emission in reuse pool.
After using above-mentioned technical proposal, effect of the invention is：Above-mentioned processing method has used at above-mentioned sewage
Reason system, thus the advantages of sewage disposal system be likewise supplied in processing method, the processing method is by the precipitation of zinc hydroxide
It is divided into two stages, adjusts pH value stage by stage by two stages, can be accurately controlled in this way, while utilizes second plus alkali pipe
Rapid dispersion effect come
Realize that accurate and quick pH is adjusted, governing response speed is faster；After secondary precipitation, then pass through sand filtration, charcoal
The suspended solids in sewage are filtered, it is finally, considerably less by filtered sewage zinc ion content, then pass through ion
It exchanges the hydrogen type cation exchange resin in pond and comes further filtering metal cation (zinc ion) completely, the waste water discharged in this way
The concentration of zinc ion is less than 1mg/L.
The processing method further includes the washing method of turning one's coat of sand filter and carbon filtering pool；In the sewage inlet of sand filter and carbon filtering pool
With thief hatch is set on outlet of sewer, the zinc ion for sampling and detecting at interval of 12 hours in the inflow and outflow of sand filter is dense
It spends, the zinc ion concentration in the inflow and outflow of carbon filtering pool, when the zinc ion concentration in the water outlet in sand filter is equal to or more than
Zinc ion concentration in water inlet then starts the washing method of turning one's coat of sand filter；When the zinc ion concentration etc. in the water outlet in carbon filtering pool
In or more than zinc ion concentration in water inlet, then start the washing method of turning one's coat of carbon filtering pool；
The washing method of turning one's coat is：The water in reuse pool is taken using washing pumping and by the water from sand filter or carbon filtering pool bottom
Turning one's coat for portion washes mouth feeding, the carbon leaching material in sand grains filtrate or carbon filtering pool in back flush sand filter, back flush
Water wash out mouth by turning one's coat at the top of sand filter or carbon filtering pool and be discharged and be sent in regulating reservoir, using turning one's coat, washing method can be with
Back flush is carried out to sand filter and carbon filtering pool, removes the solid precipitation being attached in sand grains filtrate and carbon leaching material, in this way,
Sand grains filtrate and carbon leaching material is set to keep activity for a long time, it is ensured that processing method is stable and effectively runs.
Preferably, which further includes acid washing method, switches ion exchange pond within the interval time of setting,
And it is passed through sulfuric acid into idle ion exchange pond, under strong acidic environment, the hydrogen ion backward-substitition in sulfuric acid solution exchanges
Zinc ion in resin keeps hydrogen type cation exchange resin activity recovery, the zinc sulfate obtained after pickling and sulfuric acid mixture liquid body logical
Peracid washing lotion recovery tube recycles.Hydrogen type cation exchange resin can be made to recycle by pickling, it is ensured that permanently effective makes
With.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the system diagram of the sewage disposal system of the embodiment of the present invention；
Fig. 2 is the vertical view in the 2nd pH adjustment pond；
Fig. 3 is the front schematic view in the 2nd pH adjustment pond；
In attached drawing：1. regulating reservoir；2. the first pH adjusts pond；3. the first coagulation reaction tank；4. the first inclined-tube sedimentation tank；5. the
Two pH adjust pond；6. the second coagulation reaction tank；7. sludge-tank；8. the second inclined-tube sedimentation tank；9. sand filter；10. carbon filtering pool 10；
11. ion exchange pond；12. demodulating pond；13. reuse pool；14. water wash system；15. washing water return pipeline；16. sulfuric acid adds
Pipe；17. pickle recovery tube；18. distributing pipeline section；19. level plus alkali pipe；20. adding alkali pipe vertically；21. the first water inlet distribution choosing
Select pipeline；22. the second water inlet distribution selection pipeline；23. third water inlet distribution selection pipeline.
Specific implementation mode
Below by specific embodiment, the present invention is described in further detail.
As shown in Figure 1 to Figure 3, a kind of sewage disposal system containing zinc ion, including
The entrance of regulating reservoir 1, the regulating reservoir 1 is connect with wastewater influent manifold；
First pH adjusts pond 2, and the entrance in the first pH adjustment pond 2 is connected to the outlet conduit of regulating reservoir 1, and the first pH adjusts pond
It is provided with pH meter and first on 2 and adds alkali adding tube, first adds alkali adding tube and add alkali system connectivity；In the present embodiment, first adds
Alkali adding tube is identical with the structure of subsequent second plus alkali adding tube.It is current conventional system to add alkali system, adds alkali pump real
The now automatic addition of automatic lye, and pH meter is connect with the control system of alkali pump is added, and adds alkali according to the reading of pH meter to control
The height of pump open it is low stop, control ph is in 6-9.
First coagulation reaction tank 3, pipeline between the entrance of first coagulation reaction tank 3 and the outlet in the first pH adjustment pond 2
It is connected to, PAC addition nozzles and PAM addition nozzles is provided in the first coagulation reaction tank 3；
First inclined-tube sedimentation tank 4 is managed between the entrance of first inclined-tube sedimentation tank 4 and the outlet of the first coagulation reaction tank 3
Road is connected to, and the top of the first inclined-tube sedimentation tank 4 is provided with supernatant outlet, and bottom is provided with sludge outlet；Inclined-tube sedimentation tank is
The settling zone of current conventional sedimentation basin, sedimentation basin is provided with inclined tube.
2nd pH adjusts pond 5, and the supernatant of the entrance and first inclined-tube sedimentation tank 4 in the 2nd pH adjustment pond 5 goes out
Pipeline is connected between mouthful, pH meter and second is provided on the 2nd pH adjustment pond 5, alkali pipe, second plus alkali Guan Yujia alkali systems is added to connect
It is logical；Described second adds alkali pipe to include that the several groups being set in the 2nd pH adjustment pond 5 add alkali adding tube group, and every group adds alkali adding tube
Group includes the vertical plus alkali pipe 20 being vertically arranged, and is provided at least two distribution pipeline sections 18, distribution pipe vertically plus on alkali pipe 20
The caliber of section 18 is more than vertical plus alkali pipe 20 caliber, and each distribute on pipeline section 18 is evenly distributed in several levels plus alkali pipe
19, every level, which adds, to be both provided with four rows and adds alkali hole on alkali pipe 19, and it is horizontal plus alkali pipe 19 upper which adds alkali hole to be located at
Side, downside, left side, right side；It distributes at pipeline section 18 at various height, in this way, lye adds alkali hole to be discharged into from surrounding by four rows
Into sewage, quickly mixing is realized.Preferably, pH meter in the adjustment pond 2 the first pH and the 2nd pH regulating reservoirs 1 it is equal two and
It is distributed in different depth, the result detected in this way has more reference value.
Second coagulation reaction tank 6 is managed between the entrance of second coagulation reaction tank 6 and the outlet in the 2nd pH adjustment pond 5
Road is connected to, and PAC addition nozzles and PAM addition nozzles are provided in second coagulation reaction tank 6；
Second inclined-tube sedimentation tank 8 is managed between the entrance of second inclined-tube sedimentation tank 8 and the outlet of the second coagulation reaction tank 6
Road is connected to, and the top of the second inclined-tube sedimentation tank 8 is provided with supernatant outlet, and bottom is provided with sludge outlet；
The quantity of sand filter 9, the sand filter 9 is two, and the top of each sand filter 9, which is provided with sewage inlet and turns one's coat, to be washed
The sewage inlet of outlet, each sand filter 9 passes through the supernatant of the first water inlet distribution selection pipeline 21 and the second inclined-tube sedimentation tank 8
Liquid outlet；If being provided with dried layer sand grains filtrate in the sand filter 9, from top to bottom grain size becomes larger the grain size of sand grains filtrate；
The bottom of pond of each sand filter 9, which is provided with to turn one's coat, washes mouth, outlet of sewer；The number of plies of sand grains filtrate in the sand filter 9 is five
Layer, from top to bottom respectively first layer sand grains filtrate, second layer sand grains filtrate, third layer sand grains filtrate, the 4th layer of sand grains filtrate
Grain size with layer 5 sand grains filtrate, first layer sand grains filtrate is 0.5-1.2mm, and the grain size of second layer sand grains filtrate is 2-4mm,
The grain size of third layer sand grains filtrate is 4-8mm, and the grain size of the 4th layer of sand grains filtrate is 8-16mm, the grain size of layer 5 sand grains filtrate
For 16-32mm.The bottom bottom of layer 5 sand grains filtrate, which is provided with, places screen frame, for supporting sand grains filtrate.
Carbon filtering pool 10；The quantity of the carbon filtering pool 10 is two, and the top of each carbon filtering pool 10 is provided with sewage inlet and anti-
The sewage inlet of washing outlet, each carbon filtering pool 10 is gone out by the second water inlet distribution selection pipeline 22 and the sewage of sand filter 9
Mouth connection；If being provided with dried layer carbon leaching material in the carbon filtering pool 10, the granularity of carbon leaching material from top to bottom becomes larger；Each
The bottom of pond of carbon filtering pool 10, which is provided with to turn one's coat, washes mouth, outlet of sewer；The turning one's coat of the carbon filtering pool 10 wash mouth, sand filter 9 it is anti-
Washing entrance be connected to water wash system 14, and the turning one's coat of the carbon filtering pool 10 washes out mouth, sand filter 9 turns one's coat wash-off mouth and water
Wash the connection of water return pipeline 15.The number of plies of carbon leaching material is five layers, and the layer thickness of carbon leaching material is 50mm, grain size by lower and
On be arranged as 8-16mm, 4-8mm, 2-4mm, 4-8mm, 8-16mm.The water wash system 14 includes that washing pumps, the washing pump
Water inlet pipe be connected to reuse pool 13, the outlet pipe of the washing pump, which is respectively turned one's coat with carbon filtering pool 10, washes mouth, sand filter 9
It turns one's coat and washes mouth connection, the water outlet of the washing water return pipeline 15 is connected to regulating reservoir 1.
Ion exchange pond 11；The quantity in the ion exchange pond 11 is two, and the top in each ion exchange pond 11 is provided with
Sewage inlet and pickling outlet, bottom is provided with outlet of sewer and pickling entrance, the sewage inlet in the ion exchange pond 11
It is intake by third and is connected between distribution selection pipeline 23 and the outlet of sewer of carbon filtering pool 10, is arranged in each ion exchange pond 11
There is hydrogen type cation exchange resin particle, the pickling entrance in the ion exchange pond 11 is connected with sulfuric acid adding tube 16, described
Pickling outlet is connected with pickle recovery tube 17；
Pond 12 is demodulated, pipeline is connected between the entrance and the outlet of sewer in each ion exchange pond 11 for demodulating pond 12, instead
Third is provided on tune pond 12 to add alkali adding tube and recapture medicament adding tube；
Reuse pool 13, pipeline is connected between the entrance of the reuse pool 13 and the outlet for demodulating pond 12, reuse pool
Floss hole is provided on 13；
The sludge outlet of sludge-tank 7, the entrance of the sludge-tank 7 and the first inclined-tube sedimentation tank 4, the second inclined-tube sedimentation tank 8
Pipeline is connected between sludge outlet, and the outlet of sludge-tank 7 is connect with filter press.
In addition, the invention also discloses a kind of sewage water treatment method containing zinc ion, which has used
The sewage disposal system stated, includes the following steps：
S1, the sewage containing zinc ion is sent into regulating reservoir 1 and is collected；
S2, the sewage in regulating reservoir 1 is sent in the first pH adjustment pond 2, hydrogen-oxygen is added using first plus alkali adding tube
Change sodium, and pH value is detected using pH meter, the pH value in control the first pH adjustment pond 2 is 6-9；
S3, the sewage in the first pH adjustment pond 2 is sent in the first coagulation reaction tank 3, successively adds 10% mass ratio
PAC solution and 0.1% mass ratio PAM solution, the wherein additive amount of PAC is 100-400ppm, and the additive amount of PAM is 1-
5ppm；
S4, the sewage in the first coagulation reaction tank 3 is sent in the first inclined-tube sedimentation tank 4 and is precipitated 2-3 hours, supernatant
It is sent in the 2nd pH adjustment pond 5, the sludge of bottom of pond is discharged into sludge-tank 7；
S5, it is adjusted in pond 5 by second plus the 2nd pH of alkali pipe pair and adds sodium hydroxide, wherein sodium hydroxide solution passes through
It is assigned in each horizontal plus alkali pipe 19 vertically plus after the entrance of alkali pipe 20, level plus alkali pipe 19 are in different height, hydroxide
Sodium solution adds alkali hole to evenly spread in the 2nd pH adjustment pond 5 by each row, and pH meter is utilized to monitor the pH that the 2nd pH adjusts pond 5
Value, and make pH value control between 8.5-9.5；
S6, the sewage after the 2nd pH adjustment pond 5 adjusts enter in the second coagulation reaction tank 6, successively add 10% matter
The PAC solution and 0.1% mass ratio PAM solution of ratio are measured, the wherein additive amount of PAC is 100-400ppm, and the additive amount of PAM is 1-
5ppm；
Sewage in S7, the second coagulation reaction tank 6 is sent in the second inclined-tube sedimentation tank 8 and precipitates 2-3 hours, and supernatant is sent
Enter into one of sand filter 9, two 9 a preparation and a use of sand filter, the suspended particulate in sewage flows after the filtering of sand filter 9
Enter into carbon filtering pool 10 to enter back into and be filtered in carbon filtering pool 10,10 a preparation and a use of carbon filtering pool, the sludge in the second inclined-tube sedimentation tank 8 is sent
Enter into sludge-tank 7, final sludge is sent into filter press compression；
S8, it is sent in ion exchange pond 11 by sand filter 9 and 10 filtered sewage of carbon filtering pool, ion exchange pond 11
In be filled with hydrogen type cation exchange resin, the hydrogen ion in the zinc ion and hydrogen type cation exchange resin that retain in sewage
It exchanges, final zinc ion is attracted in exchanger resin；
S9, the sewage after ion exchange, which are sent to, to be demodulated in pond 12, and the pH value demodulated in pond 12 is detected using pH meter,
By adding sodium hydroxide solution control ph between 6-9；
S10, the sewage demodulated in pond 12 pass through direct emission in reuse pool 13.
Wherein, above-mentioned processing method has used above-mentioned sewage disposal system, thus the advantages of sewage disposal system
It is likewise supplied in processing method, which is divided into two stages by the precipitation of zinc hydroxide, by two stages come sublevel
Section adjusts pH value, can be accurately controlled in this way, while accurate and quick to realize using the rapid dispersion effect of second plus alkali pipe
PH adjust, governing response speed is faster；After secondary precipitation, then filter out by sand filtration, carbon filtration the suspended matter in sewage
Solid, it is finally, considerably less by filtered sewage zinc ion content, then pass through the hydrogen form cation in ion exchange pond 11
Exchanger resin carrys out further filtering metal cation (zinc ion) completely, and the concentration of the waste water zinc ion discharged in this way is less than 1mg/
L。
The processing method further includes the washing method of turning one's coat of sand filter 9 and carbon filtering pool 10；In the dirt of sand filter 9 and carbon filtering pool 10
Thief hatch is set on water inlet and outlet of sewer, sampled and detected the zinc in the inflow and outflow of sand filter 9 at interval of 12 hours
Zinc ion concentration in ion concentration, the inflow and outflow of carbon filtering pool 10, when the zinc ion concentration etc. in the water outlet in sand filter 9
In or more than zinc ion concentration in water inlet, then start the washing method of turning one's coat of sand filter 9；Zinc in the water outlet in carbon filtering pool 10
Ion concentration is equal to or more than the zinc ion concentration in water inlet, then starts the washing method of turning one's coat of carbon filtering pool 10；
The washing method of turning one's coat is：The water in reuse pool 13 is taken using washing pumping and by the water from sand filter 9 or carbon filtration
Turning one's coat for 10 bottom of pond washes mouth feeding, the sand grains filtrate in back flush sand filter 9 or the carbon leaching material in carbon filtering pool 10,
The water of back flush washes out mouth and is discharged and is sent in regulating reservoir 1 by turning one's coat for sand filter 9 or the top of carbon filtering pool 10, using anti-
Method for washing can carry out back flush to sand filter 9 and carbon filtering pool 10, and removing is attached in sand grains filtrate and carbon leaching material
Solid precipitation, in this way, sand grains filtrate and carbon leaching material is made to keep activity for a long time, it is ensured that processing method it is stable and effectively
Operation.The sewage water treatment method further includes acid washing method, switches ion exchange pond 11 within the interval time of setting, and past idle
Ion exchange pond 11 in be passed through sulfuric acid, under strong acidic environment, in the hydrogen ion backward-substitition exchanger resin in sulfuric acid solution
Zinc ion makes hydrogen type cation exchange resin activity recovery, the zinc sulfate obtained after pickling and sulfuric acid mixture liquid body pass through pickling
Liquid recovery tube 17 recycles.Hydrogen type cation exchange resin can be made to recycle by pickling, it is ensured that permanently effective use.Certain
Metal factory wastewater characteristics are as follows：
| Serial number | Project | Numerical value | Unit |
| 1 | pH | 2-3 | Dimensionless |
| 2 | Zinc | ≤100 | mg/L |
| 3 | Iron | ≤100 | mg/L |
| 4 | COD | ≤100 | mg/L |
| 5 | Ammonia nitrogen | ≤25 | mg/L |
| 6 | Total nitrogen | ≤40 | mg/L |
| 7 | Total phosphorus | ≤10 | mg/L |
Water outlet characteristic after above-mentioned processing system and processing method is as follows：
Embodiment described above is only the description to the preferred embodiment of the present invention, not as the limit to the scope of the invention
Fixed, the various modifications made to technical solution of the present invention on the basis of not departing from design spirit of the present invention and transformation should all be fallen
In the protection domain for entering claims of the present invention determination.
Claims (9)
1. a kind of sewage disposal system containing zinc ion, it is characterised in that：Including
The entrance of regulating reservoir, the regulating reservoir is connect with wastewater influent manifold；
First pH adjusts pond, and the entrance in the first pH adjustment pond is connected to the outlet conduit of regulating reservoir, and the first pH adjustment is arranged on pond
There is pH meter and first to add alkali adding tube, first adds alkali adding tube and add alkali system connectivity；
First coagulation reaction tank, pipeline is connected between the entrance of first coagulation reaction tank and the outlet in the first pH adjustment pond, the
PAC addition nozzles and PAM addition nozzles are provided in one coagulation reaction tank；
First inclined-tube sedimentation tank, pipeline is connected between the entrance of first inclined-tube sedimentation tank and the outlet of the first coagulation reaction tank,
The top of first inclined-tube sedimentation tank is provided with supernatant outlet, and bottom is provided with sludge outlet；
2nd pH adjusts pond, is managed between the entrance and the supernatant outlet of first inclined-tube sedimentation tank in the 2nd pH adjustment pond
Road is connected to, and pH meter and second is provided on the 2nd pH adjustment pond and adds alkali pipe, second adds alkali Guan Yujia alkali system connectivities；Described second
It includes that the several groups being set in the 2nd pH adjustment pond add alkali adding tube group to add alkali pipe, and it includes vertical that every group, which adds alkali adding tube group,
Be arranged vertical plus alkali pipe are provided at least two distribution pipeline sections vertically plus on alkali pipe, distribute pipeline section caliber be more than it is vertical plus
The caliber of alkali pipe, each distribute on pipeline section are evenly distributed in several levels plus alkali pipe, and every level adds to be respectively provided on alkali pipe
There are four rows to add alkali hole, which adds alkali hole to be located at horizontal plus alkali pipe upside, downside, left side, right side；
Second coagulation reaction tank, pipeline is connected between the entrance of second coagulation reaction tank and the outlet in the 2nd pH adjustment pond,
PAC addition nozzles and PAM addition nozzles are provided in second coagulation reaction tank；
Second inclined-tube sedimentation tank, pipeline is connected between the entrance of second inclined-tube sedimentation tank and the outlet of the second coagulation reaction tank,
The top of second inclined-tube sedimentation tank is provided with supernatant outlet, and bottom is provided with sludge outlet；
The quantity of sand filter, the sand filter is two, sewage inlet is provided at the top of each sand filter and wash-off mouth of turning one's coat, often
The sewage inlet of a sand filter is connected to by the first water inlet distribution selection pipeline with the supernatant outlet of the second inclined-tube sedimentation tank；
If being provided with dried layer sand grains filtrate in the sand filter, from top to bottom grain size becomes larger the grain size of sand grains filtrate；Each sand filter
Bottom of pond, which is provided with to turn one's coat, washes mouth, outlet of sewer；
Carbon filtering pool；The quantity of the carbon filtering pool is two, sewage inlet is provided at the top of each carbon filtering pool and wash-off mouth of turning one's coat, often
The sewage inlet of a carbon filtering pool is connected to by the second water inlet distribution selection pipeline with the outlet of sewer of sand filter；The carbon filtering pool
If dried layer carbon leaching material is provided in, the granularity of carbon leaching material from top to bottom becomes larger；The bottom of pond of each carbon filtering pool is provided with
It turns one's coat and washes mouth, outlet of sewer；The turning one's coat of the carbon filtering pool washes mouth, turning one's coat for sand filter washes mouth and connect with water wash system
Logical, turning one's coat for the carbon filtering pool washes out mouth, the wash-off mouth of turning one's coat of sand filter is connected to washing water return pipeline.
Ion exchange pond；The quantity in the ion exchange pond is two, be provided at the top of each ion exchange pond sewage inlet and
Pickling exports, and bottom is provided with outlet of sewer and pickling entrance, and the sewage inlet in the ion exchange pond is intake by third
It is connected between distribution selection pipeline and the outlet of sewer of carbon filtering pool, hydrogen form cation is provided in each ion exchange pond and exchanges tree
Fat particle, the pickling entrance in the ion exchange pond are connected with sulfuric acid adding tube, and the pickling outlet is connected with pickle and returns
Closed tube；
Pond is demodulated, pipeline is connected between the entrance and the outlet of sewer in each ion exchange pond for demodulating pond, is demodulated and is arranged on pond
There is third to add alkali adding tube and recapture medicament adding tube；
Reuse pool, pipeline is connected between the entrance of the reuse pool and the outlet for demodulating pond, the row of being provided on reuse pool
Put mouth；
The sludge outlet of sludge-tank, the entrance of the sludge-tank and the first inclined-tube sedimentation tank, the sludge outlet of the second inclined-tube sedimentation tank
Between pipeline be connected to, the outlet of sludge-tank is connect with filter press.
2. a kind of sewage disposal system containing zinc ion as described in claim 1, it is characterised in that：The water wash system packet
Washing pump is included, the water inlet pipe of the washing pump is connected to reuse pool, and the outlet pipe of the washing pump is turned one's coat with carbon filtering pool respectively
Wash mouth, sand filter turn one's coat wash mouth connection, it is described washing water return pipeline water outlet be connected to regulating reservoir.
3. a kind of sewage disposal system containing zinc ion as claimed in claim 2, it is characterised in that：Sand in the sand filter
The number of plies of grain filtrate is five layers, from top to bottom respectively first layer sand grains filtrate, second layer sand grains filtrate, the filter of third layer sand grains
The grain size of material, the 4th layer of sand grains filtrate and layer 5 sand grains filtrate, first layer sand grains filtrate is 0.5-1.2mm, second layer sand grains
The grain size of filtrate is 2-4mm, and the grain size of third layer sand grains filtrate is 4-8mm, and the grain size of the 4th layer of sand grains filtrate is 8-16mm, the
The grain size of five layers of sand grains filtrate is 16-32mm.
4. a kind of sewage disposal system containing zinc ion as claimed in claim 3, it is characterised in that：The number of plies of carbon leaching material
Be five layers, the layer thickness of carbon leaching material is 50mm, grain size be from bottom to top arranged as 8-16mm, 4-8mm, 2-4mm, 4-8mm,
8-16mm。
5. a kind of sewage disposal system containing zinc ion as claimed in claim 4, it is characterised in that：First pH adjusts pond
First plus alkali adding tube the 2nd pH regulating reservoirs second plus alkali pipe structure it is identical.
6. a kind of sewage disposal system containing zinc ion as claimed in claim 5, it is characterised in that：First pH adjusts pond
With pH meter in the 2nd pH regulating reservoirs is equal two and is distributed in different depth.
7. a kind of sewage water treatment method containing zinc ion, it is characterised in that：The sewage water treatment method has used in claim 1
Sewage disposal system includes the following steps：
S1, the sewage containing zinc ion is sent into regulating reservoir and is collected；
S2, the sewage in regulating reservoir is sent in the first pH adjustment pond, sodium hydroxide is added using first plus alkali adding tube, and
PH value is detected using pH meter, the pH value in control the first pH adjustment pond is 6-9；
S3, the sewage in the first pH adjustment pond is sent in the first coagulation reaction tank, the PAC for successively adding 10% mass ratio is molten
Liquid and 0.1% mass ratio PAM solution, the wherein additive amount of PAC are 100-400ppm, and the additive amount of PAM is 1-5ppm；
S4, the sewage in the first coagulation reaction tank is sent in the first inclined-tube sedimentation tank and is precipitated 2-3 hours, supernatant is sent to
2nd pH is adjusted in pond, and the sludge of bottom of pond is discharged into sludge-tank；
S5, it is adjusted in pond by second plus the 2nd pH of alkali pipe pair and adds sodium hydroxide, wherein sodium hydroxide solution by adding vertically
Alkali pipe is assigned to after entering in each horizontal plus alkali pipe, and level plus alkali pipe are in different height, and sodium hydroxide solution passes through each
Row plus alkali hole are evenly spread in the 2nd pH adjustment pond, and monitoring the 2nd pH using pH meter adjusts the pH value in pond, and makes pH value control
Between 8.5-9.5；
S6, the sewage after the 2nd pH adjustment pond adjustment enter in the second coagulation reaction tank, successively add 10% mass ratio
PAC solution and 0.1% mass ratio PAM solution, the wherein additive amount of PAC are 100-400ppm, and the additive amount of PAM is 1-5ppm；
Sewage in S7, the second coagulation reaction tank is sent in the second inclined-tube sedimentation tank and precipitates 2-3 hours, and supernatant is sent to it
In in a sand filter, two sand filter a preparation and a use, the suspended particulate in sewage is flowed into carbon filtration after sand filter filters
It enters back into carbon filtering pool and filters in pond, carbon filtering pool a preparation and a use, the sludge in the second inclined-tube sedimentation tank is sent in sludge-tank, most
Whole sludge is sent into filter press compression；
S8, it is sent in ion exchange pond by sand filter and the filtered sewage of carbon filtering pool, ion exchange has been filled with hydrogen in pond
Type cation exchange resin, the zinc ion retained in sewage are exchanged with the hydrogen ion in hydrogen type cation exchange resin, finally
Zinc ion is attracted in exchanger resin；
S9, the sewage after ion exchange, which are sent to, to be demodulated in pond, and the pH value demodulated in pond is detected using pH meter, passes through addition
Sodium hydroxide solution control ph is between 6-9；
S10, the sewage demodulated in pond pass through direct emission in reuse pool.
8. a kind of sewage water treatment method containing zinc ion as claimed in claim 7, it is characterised in that：The processing method further includes
The washing method of turning one's coat of sand filter and carbon filtering pool；Thief hatch is set on the sewage inlet and outlet of sewer of sand filter and carbon filtering pool,
In the inflow and outflow for sampling and detecting zinc ion concentration in the inflow and outflow of sand filter, carbon filtering pool at interval of 12 hours
Zinc ion concentration, the zinc ion concentration in the zinc ion concentration in the water outlet in sand filter is equal to or more than intake, then start
The washing method of turning one's coat of sand filter；Zinc ion in the zinc ion concentration in the water outlet in carbon filtering pool is equal to or more than intake is dense
Degree, then start the washing method of turning one's coat of carbon filtering pool；
The washing method of turning one's coat is：The water in reuse pool is taken using washing pumping and by the water from sand filter or carbon filtering pool bottom
It turns one's coat and washes mouth feeding, the carbon leaching material in sand grains filtrate or carbon filtering pool in back flush sand filter, the water of back flush
It is discharged and is sent in regulating reservoir by the turning one's coat wash-off mouth at the top of sand filter or carbon filtering pool.
9. a kind of sewage water treatment method containing zinc ion as claimed in claim 8, it is characterised in that：The sewage water treatment method is also
Including acid washing method, switch ion exchange pond within the interval time of setting, and sulfuric acid is passed through into idle ion exchange pond,
Under strong acidic environment, zinc ion in the hydrogen ion backward-substitition exchanger resin in sulfuric acid solution makes hydrogen form cation exchange tree
Fat activity recovery, the zinc sulfate obtained after pickling and sulfuric acid mixture liquid body are recycled by pickle recovery tube.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867389A (en) * | 2019-04-16 | 2019-06-11 | 芜湖沃泰环保科技有限公司 | A kind of processing system and its method of mine soil elution sewage |
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