CN108147568A - A kind of washed-out sand waste water treatment process - Google Patents
A kind of washed-out sand waste water treatment process Download PDFInfo
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- CN108147568A CN108147568A CN201711434071.2A CN201711434071A CN108147568A CN 108147568 A CN108147568 A CN 108147568A CN 201711434071 A CN201711434071 A CN 201711434071A CN 108147568 A CN108147568 A CN 108147568A
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- sludge
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- waste water
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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
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a kind of washed-out sand waste water treatment process, include the following steps successively：Washed-out sand, for the first time separation, second of separation, concentration, buffered, third time separation, recovery processing；Advantages of the present invention：Pass sequentially through the washed-out sand waste water treatment process of washed-out sand, for the first time separation, second of separation, concentration, buffered, third time separation, recovery processing, the quick separating of sand and water can be realized by multiple separation, the separative efficiency of sand and water can not only be improved, and it can realize the zero-emission of waste water after washed-out sand, it is achieved thereby that the efficiency of energy-saving and emission-reduction, buffered can be set according to different sandstone aggregates into row buffering, meet different washed-out sand demands, disposed of in its entirety is simple for process, easy to operate, washed-out sand is efficient.
Description
Technical field
The present invention relates to a kind of washed-out sand waste water treatment process.
Background technology
At present, sandstone aggregate is the primary building material of the structures such as concrete and heap stone-laying in hydraulic engineering, and existing
Sandstone aggregate carries out washed-out sand by common washed-out sand equipment, it is impossible to realize the good separation of sandstone aggregate, washed-out sand effect is poor, needs
By multiple washed-out sand, washed-out sand efficiency is slow, and generates waste water to be expelled directly out during washed-out sand, during sand washer washed-out sand,
So as to cause the pollution of environment.
Invention content
The technical problem to be solved in the present invention is to provide a kind of washed-out sand waste water treatment process, existing sandstone aggregate is solved
The technical issues of washed-out sand technique leads to environmental pollution.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：A kind of washed-out sand wastewater treatment
Technique includes the following steps successively：
Step 1：Washed-out sand：Obtain the mixture of sandstone aggregate and slime water；
Step 2：It detaches for the first time：The mixture that step 1 is obtained carries out separating treatment and obtains fine sand and thin mud
Mixture and sandstone aggregate, and the sandstone aggregate after separating treatment is carried out dehydrating by dewatering screen；
Step 3：Second of separation：By the fine sand after step 2 separating treatment and the isolated fine sand of the mixture of thin mud
And sludge, and the fine sand after separating treatment is carried out dehydrating by dewatering screen, solid content is 7 in the sludge after separating treatment
~30%；
Step 4：Concentration：By after step 3 separating treatment sludge carry out successively plus flocculant pretreatment and it is dense
Contracting is handled, and solid content in the pretreated sludge of flocculant is added to be 30~40%, and solid content is not in the sludge after concentration
Less than 50%；
Step 5：Buffered：Sludge after step 4 concentration is subjected to buffered, and will step by buffer pool
Concentration overflow water recovery processing after rapid four concentration carrys out the acquisition for mixture in step 1；
Step 6：Third time detaches:Sludge after step 5 buffered is subjected to separating treatment and obtains water and sludge；
Step 7：Recovery processing：The water that step 6 detaches is recycled after filter box filters by clear water reserviors, step
Sludge after six separation carries out emission treatment by forklift.
Preferably, the mixture in step 1 is obtained by screening machine screening again by sandstone aggregate after water cleans,
And the mass ratio of sandstone aggregate and water is 1:2~2：3, and the water in step 1 is the water recycled in clear water reserviors in step 7.
Preferably, the mixture in step 2 carries out separating treatment by screw sand washer, and by the mixed of fine sand and thin mud
It closes object and carries out storage processing by recycling bins.
Preferably, the fine sand in step 3 and the mixture of thin mud carry out separating treatment by cyclone, and fine sand and thin
The mixture of mud is delivered to by pump in cyclone.
Preferably, the sludge in step 4 is carried out by concentration tank plus flocculant pre-processes and concentration, described dense
Be connected with flocculant feed tank on contracting tank, and add the addition of flocculant in flocculant pretreatment for sludge total amount 0.6 ‰~
2‰。
Preferably, the concentration tank in step 4 includes two groups, and secondary concentration processing is carried out to sludge by two groups of concentration tanks.
Preferably, the concentration tank includes tank body and the feed pipe being arranged in tank body, the tank body of feed pipe bottom end
Interior to be equipped with conical baffle, sludge slows down the speed that sludge declines by conical baffle.
Preferably, the concentration overflow water in step 5 is recycled by collecting box, and collecting box is equipped with return duct,
Return duct is equipped with flow valve.
Preferably, the sludge in step 6 carries out separating treatment by membrane pressure filter.
In conclusion advantages of the present invention：1. pass sequentially through washed-out sand, separation for the first time, second separation, concentration,
Buffered, third time detach, the washed-out sand waste water treatment process of recovery processing, and the fast of sand and water can be realized by multiple separation
Speed separation, can not only improve the separative efficiency of sand and water, and can realize the zero-emission of waste water after washed-out sand, it is achieved thereby that energy saving subtract
The efficiency of row, buffered can be set according to different sandstone aggregates into row buffering, meet different washed-out sand demands, disposed of in its entirety
Simple for process, easy to operate, washed-out sand is efficient；
2. obtain the mixing of sandstone aggregate and slime water after sandstone aggregate is cleaned by water by screening machine screening again
Object, screening function effectively remove the other impurities of sandstone aggregate, the quality of sandstone aggregate and slime water are improved, after being conducive to
Continuous processing, and can realize the recycling of water, save water resource；
3. realizing the separation of fine sand and sludge by screw sand washer, there are power consumptions in screw sand washer separation process
It is small, wash degree is high, Integral cleaning, dehydrating effect are good, fine sand and the advantages of sludge stabilization；
4. can realize that the mixture of fine sand and thin mud is quickly delivered in cyclone by pump, the effect of conveying is improved
Rate, and by the centrifugal sedimentation principle of cyclone, can quickly realize the separation purpose of fine sand and thin mud；
5. adding flocculant into concentration tank by flocculant feed tank, it can realize and flocculant and the effective of sludge is added to mix
It closes, puies forward highly enriched efficiency, and flocculant can remove the suspended matter in waste water, so as to achieve the purpose that water process, so as to fulfill
Recycling to water, reduces the discharge of waste water；
6. concentration tank is arranged to two groups, the concentration twice of sludge can be realized, after guarantee concentration that can be reliable and stable
Solid content is not less than 50% in sludge；
7. concentration tank is arranged to tank body and feed pipe, the charging of sludge is realized by feed pipe, and passes through conical flow guiding
Plate slows down the speed of sludge decline, so as to disperse in tank body after avoiding sewage sludge feed, improves concentration quality；
8. realizing that the unified of concentration overflow water is recycled by collecting box, the waste of concentration overflow water is avoided, and lead to
Inflow-rate of water turbine valve controls the flow of return duct, can be supplied water according to the sandstone aggregate of different weight, reduce in step 1 plus
Enter the weight of water, so as to save cost, realize the recycling of resource, realize the efficiency of energy-saving and emission-reduction；
9. the sludge in step 6 is detached by membrane pressure filter, point of water and sludge can be fast and effectively realized
From, and can guarantee that the sludge filter cake moisture content after separation less than 30%, is conducive to sludge filter cake and quickly realizes dry heap.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structure diagram of concentration tank of the present invention.
Reference numeral：
1 tank body, 2 feed pipes, 3 conical baffles, 4 flocculant feed tanks, 5, collecting box, 6 return ducts, 7 flow valves
Specific embodiment
A kind of washed-out sand waste water treatment process, includes the following steps successively：
Step 1：Washed-out sand：Obtain the mixture of sandstone aggregate and slime water；
Step 2：It detaches for the first time：The mixture that step 1 is obtained carries out separating treatment and obtains fine sand and thin mud
Mixture and sandstone aggregate, and the sandstone aggregate after separating treatment is carried out dehydrating by dewatering screen；
Step 3：Second of separation：By the fine sand after step 2 separating treatment and the isolated fine sand of the mixture of thin mud
And sludge, and the fine sand after separating treatment is carried out dehydrating by dewatering screen, solid content is 7 in the sludge after separating treatment
~30%；
Step 4：Concentration：By after step 3 separating treatment sludge carry out successively plus flocculant pretreatment and it is dense
Contracting is handled, and solid content in the pretreated sludge of flocculant is added to be 30~40%, and solid content is not in the sludge after concentration
Less than 50%；
Step 5：Buffered：Sludge after step 4 concentration is subjected to buffered, and will step by buffer pool
Concentration overflow water recovery processing after rapid four concentration carrys out the acquisition for mixture in step 1；
Step 6：Third time detaches:Sludge after step 5 buffered is subjected to separating treatment and obtains water and sludge；
Step 7：Recovery processing：The water that step 6 detaches is recycled after filter box filters by clear water reserviors, step
Sludge after six separation carries out emission treatment by forklift.
Mixture in step 1 is obtained, and sandstone bone by screening machine screening again by sandstone aggregate after water cleans
The mass ratio of material and water is 1:2~2：3, and the water in step 1 is the water recycled in clear water reserviors in step 7, by sandstone aggregate
Obtain the mixture of sandstone aggregate and slime water after being cleaned by water by screening machine screening again, screening function effectively removes
The other impurities of sandstone aggregate improve the quality of sandstone aggregate and slime water, are conducive to subsequent processing, and can realize water
It recycles, has saved water resource, the mixture in step 2 carries out separating treatment by screw sand washer, and by fine sand and thin
The mixture of mud carries out storage processing by recycling bins, and the separation of fine sand and sludge, spiral washed-out sand are realized by screw sand washer
There are power consumption is small, wash degree is high, Integral cleaning, dehydrating effect are good, fine sand and the advantages of sludge stabilization in machine separation process,
The mixture of fine sand and thin mud in step 3 carries out separating treatment by cyclone, and fine sand and the mixture of thin mud pass through pump
It is delivered in cyclone, can realize that the mixture of fine sand and thin mud is quickly delivered in cyclone by pump, improve conveying
Efficiency, and by the centrifugal sedimentation principle of cyclone, can quickly realize the separation purpose of fine sand and thin mud.
In addition, the sludge in step 4 is carried out by concentration tank plus flocculant pre-processes and concentration, such as Fig. 1 institutes
Show, be connected with flocculant feed tank 4 on the concentration tank, and the addition of flocculant in flocculant pretreatment is added to be sludge total amount
0.6 ‰~2 ‰, flocculant is added into concentration tank by flocculant feed tank, can realize plus flocculant and sludge it is effective
Mixing, puies forward highly enriched efficiency, and flocculant can remove the suspended matter in waste water, so as to achieve the purpose that water process, so as to real
The recycling to water is showed, has reduced the discharge of waste water, the concentration tank in step 4 includes two groups, passes through two groups of concentration tanks pair
Sludge carries out secondary concentration processing, can realize the concentration twice of sludge, contains in sludge after guarantee concentration that can be reliable and stable
Gu amount, not less than 50%, the concentration tank includes tank body 1 and the feed pipe 2 being arranged in tank body 1,2 bottom end of feed pipe it is described
Conical baffle 3 is equipped in tank body, sludge slows down the speed that sludge declines by conical baffle, is realized by feed pipe dirty
The charging of mud, and the speed that sludge declines is slowed down by conical baffle, so as to disperse in tank body after avoiding sewage sludge feed,
Improve concentration quality.
Concentration overflow water in step 5 is recycled by collecting box 5, and collecting box 5 is equipped with return duct 6, reflux
Pipe is equipped with flow valve 7, realizes the unified recovery processing of concentration overflow water, avoids the waste of concentration overflow water, and pass through stream
Valve is measured to control the flow of return duct, can be supplied water according to the sandstone aggregate of different weight, be reduced and water is added in step 1
Weight, so as to save cost, realize the recycling of resource, realize the efficiency of energy-saving and emission-reduction, the dirt in step 6
Mud carries out separating treatment by membrane pressure filter, can fast and effectively realize the separation of water and sludge, and after can guarantee separation
Sludge filter cake moisture content less than 30%, be conducive to sludge filter cake and quickly realize dry heap.
In addition to above preferred embodiment, the present invention also has other embodiments, and those skilled in the art can be according to this
Invention makes various changes and modifications, and without departing from the spirit of the present invention, should all belong to appended claims of the present invention and determine
The range of justice.
Claims (9)
1. a kind of washed-out sand waste water treatment process, it is characterised in that：Include the following steps successively：
Step 1：Washed-out sand：Obtain the mixture of sandstone aggregate and slime water；
Step 2：It detaches for the first time：The mixture that step 1 is obtained carries out separating treatment and obtains the mixing of fine sand and thin mud
Object and sandstone aggregate, and the sandstone aggregate after separating treatment is carried out dehydrating by dewatering screen；
Step 3：Second of separation：By the fine sand after step 2 separating treatment and the isolated fine sand of the mixture of thin mud and dirt
Mud, and the fine sand after separating treatment is carried out dehydrating by dewatering screen, in the sludge after separating treatment solid content for 7~
30%；
Step 4：Concentration：Sludge after step 3 separating treatment is carried out successively plus at flocculant pretreatment and concentration
Reason, and solid content in the pretreated sludge of flocculant is added to be 30~40%, solid content is not less than in the sludge after concentration
50%；
Step 5：Buffered：Sludge after step 4 concentration is subjected to buffered, and by step 4 by buffer pool
Concentration overflow water recovery processing after concentration carrys out the acquisition for mixture in step 1；
Step 6：Third time detaches:Sludge after step 5 buffered is subjected to separating treatment and obtains water and sludge；
Step 7：Recovery processing：The water that step 6 detaches is recycled after filter box filters by clear water reserviors, step 6 point
Sludge from after carries out emission treatment by forklift.
2. a kind of washed-out sand waste water treatment process according to claim 1, it is characterised in that：Mixture in step 1 passes through
Sandstone aggregate is obtained after water cleans by screening machine screening again, and the mass ratio of sandstone aggregate and water is 1:2~2：3.
3. a kind of washed-out sand waste water treatment process according to claim 1, it is characterised in that：Mixture in step 2 passes through
Screw sand washer carries out separating treatment, and fine sand and the mixture of thin mud are carried out storage processing by recycling bins.
4. a kind of washed-out sand waste water treatment process according to claim 1, it is characterised in that：Fine sand and thin mud in step 3
Mixture separating treatment is carried out by cyclone, and fine sand and the mixture of thin mud are delivered to by pump in cyclone.
5. a kind of washed-out sand waste water treatment process according to claim 1, it is characterised in that：Sludge in step 4 passes through dense
Contracting tank carries out plus flocculant pre-processes and concentration, flocculant feed tank is connected on the concentration tank, and add flocculant
The addition of flocculant is 0.6 ‰~the 2 ‰ of sludge total amount in pretreatment.
6. a kind of washed-out sand waste water treatment process according to claim 5, it is characterised in that：Concentration tank in step 4 includes
Two groups, secondary concentration processing is carried out to sludge by two groups of concentration tanks.
7. a kind of washed-out sand waste water treatment process according to claim 5 or 6, it is characterised in that：The concentration tank includes tank
Body and the feed pipe being arranged in tank body, the tank body of feed pipe bottom end is interior to be equipped with conical baffle, and sludge is led by taper
Flowing plate come slow down sludge decline speed.
8. a kind of washed-out sand waste water treatment process according to claim 1, it is characterised in that：Concentration overflow water in step 5
It is recycled by collecting box, collecting box is equipped with return duct, and return duct is equipped with flow valve.
9. a kind of washed-out sand waste water treatment process according to claim 1, it is characterised in that：Sludge in step 6 by every
Membrane type press filter carries out separating treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711434071.2A CN108147568A (en) | 2017-12-26 | 2017-12-26 | A kind of washed-out sand waste water treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711434071.2A CN108147568A (en) | 2017-12-26 | 2017-12-26 | A kind of washed-out sand waste water treatment process |
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| CN108147568A true CN108147568A (en) | 2018-06-12 |
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| CN201711434071.2A Pending CN108147568A (en) | 2017-12-26 | 2017-12-26 | A kind of washed-out sand waste water treatment process |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052688A (en) * | 2018-08-29 | 2018-12-21 | 日昌升集团有限公司 | A kind of sandstone wastewater processing system and method |
| CN109261325A (en) * | 2018-09-18 | 2019-01-25 | 日昌升集团有限公司 | A kind of sandstone aggregate circular water treating system and method |
| CN109368844A (en) * | 2018-09-10 | 2019-02-22 | 广州市龙粤环保机械设备有限公司 | A kind of washed-out sand waste water treatment system |
| CN110695064A (en) * | 2019-11-12 | 2020-01-17 | 青岛恩普环保设备有限公司 | Shield muck zero-discharge treatment system and method |
| CN112374653A (en) * | 2020-11-19 | 2021-02-19 | 中国水利水电第九工程局有限公司 | Hydraulic classification separation and fine sand recovery method for treating wastewater from sandstone production |
| CN112604326A (en) * | 2020-11-24 | 2021-04-06 | 遵义师范学院 | Desilting separation device for sewage pretreatment and using method thereof |
| CN112916198A (en) * | 2021-01-29 | 2021-06-08 | 中国水利水电第九工程局有限公司 | Wet screening sand making system and method under strong wind condition |
| CN117069348A (en) * | 2023-10-17 | 2023-11-17 | 南通东来冶金装备有限公司 | High-efficient turbid water purifier |
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| CN102153213A (en) * | 2011-04-22 | 2011-08-17 | 中国水利水电第九工程局有限公司 | Two-stage centrifugal desliming technology |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052688A (en) * | 2018-08-29 | 2018-12-21 | 日昌升集团有限公司 | A kind of sandstone wastewater processing system and method |
| CN109368844A (en) * | 2018-09-10 | 2019-02-22 | 广州市龙粤环保机械设备有限公司 | A kind of washed-out sand waste water treatment system |
| CN109261325A (en) * | 2018-09-18 | 2019-01-25 | 日昌升集团有限公司 | A kind of sandstone aggregate circular water treating system and method |
| CN110695064A (en) * | 2019-11-12 | 2020-01-17 | 青岛恩普环保设备有限公司 | Shield muck zero-discharge treatment system and method |
| CN112374653A (en) * | 2020-11-19 | 2021-02-19 | 中国水利水电第九工程局有限公司 | Hydraulic classification separation and fine sand recovery method for treating wastewater from sandstone production |
| CN112604326A (en) * | 2020-11-24 | 2021-04-06 | 遵义师范学院 | Desilting separation device for sewage pretreatment and using method thereof |
| CN112916198A (en) * | 2021-01-29 | 2021-06-08 | 中国水利水电第九工程局有限公司 | Wet screening sand making system and method under strong wind condition |
| CN117069348A (en) * | 2023-10-17 | 2023-11-17 | 南通东来冶金装备有限公司 | High-efficient turbid water purifier |
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