CN101353217A - Backwater diffluence method for dry red mud disposal and backwater diffluence structure thereof - Google Patents
Backwater diffluence method for dry red mud disposal and backwater diffluence structure thereof Download PDFInfo
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- CN101353217A CN101353217A CNA2007102011706A CN200710201170A CN101353217A CN 101353217 A CN101353217 A CN 101353217A CN A2007102011706 A CNA2007102011706 A CN A2007102011706A CN 200710201170 A CN200710201170 A CN 200710201170A CN 101353217 A CN101353217 A CN 101353217A
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- red mud
- stockyard
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention discloses a method for utilizing returning water-separation of dry process red mud yards and a structure of returning water-separation; wherein, the structure comprises a red mud yard, a yard water recycling tank and a yard return pipe. In the invention, the yard water recycling tank is arranged as the independent two of a lye water recycling tank with the pH value over 9 and a brackish water recycling tank with the pH value of less than or equal to 9, and an overflow pipe is arranged on the brackish water recycling tank with the pH value less than or equal to 9; a pH monitor and a control system are arranged on the yard returning pipe leading to the yard water recycling tank, by the pH monitor and the control system, the drained water in the yard water recycling tank is drained to the corresponding lye water recycling tank or the brackish water recycling tank according to the pH value. The design can calculate the volume of the lye water recycling tank with the pH value over 9 by the area of the red mud yard, water ratio of red mud and the pH value of red mud, not only ensure that returning water containing alkali does not overflow and pollute environment under the condition without rain or drizzle, but also plan and design the volume of the water recycling tank according to the scale of red mud factories, floor area for production and expense for building factory area are saved.
Description
Technical field
The backwater diffluence that the present invention relates to a kind of dry method red mud storage yard utilizes method and backwater diffluence structure thereof, belongs to dry-method red mud disposal technology field.
Background technology
Red mud is the waste residue that produces in the alumina producing, and except that can fully utilizing on a small quantity, each alumina producer all need be built special red mud dump and stack red mud.The disposal of red mud mainly contains wet method and dry method dual mode.It is generally acknowledged that the red mud slurry water ratio that enters the stockyard is dry method being wet method more than 47% less than 47%.General 3～the 5g/L of the attached alkali of dry method red mud, wet method is higher.So the pH value of stockyard wastewater from red mud is usually more than 12, far above " integrated wastewater discharge standard " (GB8798-1996) in the limit value of pH value 6～9, so can not directly efflux.
The dry method technology of storing up is carried out dryness in the sun, discharging consolidation after adopting high-pressure diaphragm pump that the red mud of toothpaste-like slurry is piped to the stockyard usually again.Some alumina producer directly is transported to the stockyard with automobile with the filter cake of water ratio about 25% after with filtering red mud and stores up, and also belongs to a kind of mode that dry method is stored up.
Dry method red mud storage yard has bigger airing area, and the surface is ponding not substantially.The red mud slurry that enters the stockyard is through after the settlement separate effect, and its water ratio can be reduced to about 35% from 47% in 3～5 days, enters the dryness in the sun cycle then.After this moisture in the red mud mainly enters atmosphere by Evaporation, has 26% moisture then forever to be deposited in the red mud hole approximately.Settlement separate go out contain the alkali wastewater from red mud, mainly flow to the center draining shaft along the red mud laminar surface, after the inverted filter around the vertical shaft filters, enter back pool outside the storehouse along stockyard, bottom of the reservior return water pipe by vertical shaft.Because permeability coefficient has only 1 * 10 behind the red mud drying
-6About cm/s, drop to the rainwater on surface, stockyard, major part flows to the center draining shaft along the red mud laminar surface, flows to back pool outside the storehouse again.Rainwater contacts washing thereby presents alkalescence with the red mud laminar surface in flow process, but its pH value reduces with the prolongation of rain time.Wastewater from red mud and rainwater are discharged to back pool outside the storehouse by same set of return water system, except that alkali content surpasses emission standard, do not contain other hazardous and noxious substances in the backwater.
The backwater of dry method red mud storage yard has following characteristics: one, and the water yield is inhomogeneous; When not raining at ordinary times, the backwater water yield that enters back pool seldom, and during rainfall, the rainwater that admit on the surface, reservoir area is many, the backwater water yield that enters back pool is very big.Its two, water quality is inhomogeneous; When not raining at ordinary times, the backwater pH value that with the wastewater from red mud is main component for the alkali waste water that contains that can not efflux, can only be got back to the conveying that plant area is recycled and reused for red mud up to 12～13.And during rainfall, under the cleaning function of rainwater, the pH value of backwater will reduce gradually, along with the increase of rainfall duration or rainfall amount, is that the backwater pH value of main component may be reduced to below 9 with the rainwater, thereby reaches emission standard.Its three owing to be the dry treatment red mud, carry the needed water yield of red mud less, required conveying water is a certain value during stably manufactured, the backwater amount that objectively requires from the stockyard to return with pump plant area is a certain value, can't handle and use more backwater.
Fluctuate with weather for solving stockyard backwater amount, dry method red mud storage yard is generally built big volumetrical back pool outside the storehouse, is used for storing and regulates the uneven red mud backwater of the water yield.But have following shortcoming after adopting big volumetrical back pool: 1, the back pool volume is difficult for determining that volume is crossed senior general increases investment, and volume is too small, and backwater is expired the pond when having heavy rain again, causes containing the possibility of the excessive contaminate environment of buck.Store backwater even 2 build a very big pond of volume, because alumina producer can use the link that contains alkali waste water limited, a large amount of backwater are difficult to effectively utilize.
Summary of the invention
The objective of the invention is to, provide a kind of backwater diffluence of dry method red mud storage yard to utilize method and backwater diffluence structure thereof; The present invention is by being divided into two lattice with existing stockyard back pool; store respectively PH greater than 9 and PH smaller or equal to 9 backwater; can avoid stockyard backwater water quality to last the fluctuation problem of variation with rainfall amount like this; can solve the problem that backwater can not efflux again; can make the volume of stockyard back pool be unlikely too big like this, can better protect environment again.Can overcome the deficiencies in the prior art.
Technical scheme of the present invention, a kind of backwater diffluence of dry method red mud storage yard utilizes method, comprise red mud dump and stockyard back pool, between red mud dump and stockyard back pool, be connected with the stockyard return water pipe, this method be the stockyard back pool be set to two independently pH value be less than or equal to little buck back pool of 9 greater than 9 buck back pool and pH value, be less than or equal at pH value on little buck back pool of 9 upflow tube be set; And on the stockyard return water pipe of stockyard back pool, a pH value monitor and Controlling System are being set, by pH value monitor and Controlling System the draining in the return water pipe of stockyard is drained in corresponding buck back pool or the little buck back pool according to the size of pH value, the draining that is stored in buck back pool and the little buck back pool is then returned plant area and is continued to utilize by being arranged on water recovery apparatus on buck back pool and the little buck back pool.
On the return water pipe of stockyard, also be connected with Y-junction, Y-junction is divided into 2 return branch with the stockyard return water pipe, 2 return branch are connected with buck back pool or little buck back pool respectively, and are connected with the motorized valve by pH value monitor and Controlling System control on 2 return branch respectively.
A kind of backwater diffluence structure of dry method red mud storage yard, comprise red mud dump 15 and stockyard back pool 16, be provided with stockyard return water pipe 1 between red mud dump 15 and stockyard back pool 16, stockyard back pool 16 comprises buck back pool 7 and little buck back pool 8, on little buck back pool 8 upflow tube 9 is set; On stockyard return water pipe 1, be connected with pH value on-line detector 2 and Y-junction, on pH value on-line detector 2, connect pH value on-line control system 12, on Y-junction, be connected with buck water inlet pipe 3 and little buck water inlet pipe 4, buck water inlet pipe 3 is connected with buck back pool 7, and on buck water inlet pipe 3, be connected with motorized valve 5, little buck water inlet pipe 4 is connected with little buck back pool 8, and be connected with motorized valve 6 on little buck water inlet pipe 4, the keying of motorized valve 5 and motorized valve 6 is by 12 controls of PH on-line control system.
On little buck back pool 8, be connected with little buck return water pipe 14, on little buck return water pipe 14, be connected with little buck back water pump 11.
On buck back pool 7, be connected with buck return water pipe 13, be connected with buck back water pump 10 at buck return water pipe 13.
Upflow tube 9 and sewage discharge pipe coupling.
Compared with the prior art, the present invention is by being divided into two lattice with existing stockyard back pool, store respectively PH greater than 9 and PH smaller or equal to 9 backwater, this design can be by the area of red mud dump, the pH value of red mud water ratio and red mud is calculated the volume of pH value greater than 9 buck back pool, can guarantee to contain when no rain and drizzle buck so can excessive contaminate environment, can save to produce and take up an area of and plant area's construction cost by the size of the scale planning and design back pool of red mud dump again.PH smaller or equal to little buck back pool of 9 be rain heavily or during heavy rain the alkalinity in the backwater in the red mud heap factory be diluted to standby tank below 9, on little buck back pool, also be provided with upflow tube and water return pipeline, so just can solve present backwater water quality all is to efflux the problem that can't effectively utilize too by force with backwater alkalescence, and can guarantee when descending torrential rain, can reach emission standard, not pollute the environment from the backwater that returns the pond overflow of little buck; Other each operation of factory that can also be used effectively of the water storage in little buck back pool simultaneously, further conserve water resource and production cost, therefore the present invention has excellent popularization to be worth and practical value, brings good economic benefits can for society and enterprise.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Embodiment: dry method red mud storage yard, comprise red mud dump, stockyard back pool and stockyard return water pipe, between red mud dump and stockyard back pool, be provided with the stockyard return water pipe; For better controlling and utilize the backwater of dry method red mud storage yard, the stockyard back pool be set to two independently pH value be less than or equal to little buck back pool of 9 greater than 9 buck back pool and pH value, be less than or equal at pH value upflow tube be set on 9; And a pH value monitor and Controlling System are being set leading on the stockyard return water pipe of stockyard back pool, by pH value monitor and Controlling System the draining in the return water pipe of stockyard is drained in corresponding buck back pool or the little buck back pool according to the size of pH value.On the return water pipe of stockyard, also be connected with Y-junction, Y-junction is divided into 2 return branch with the stockyard return water pipe, 2 return branch are connected with buck back pool or little buck back pool respectively, and are connected with the motorized valve by pH value monitor and Controlling System control on 2 return branch respectively.Can guarantee to contain when no rain and drizzle buck so can excessive contaminate environment, again can be by the size of planning and design back pool, save to produce and take up an area of and plant area's construction cost, the water storage in little buck back pool also can apply to other workshop section to the system of being limited in scope with water ph value of plant area and use.
A kind of dry method red mud storage yard backwater diffluence structure according to the aforesaid method making; as shown in Figure 1; comprise red mud dump 15 and stockyard back pool 16; stockyard back pool 16 is near the initial dam downstream, stockyard; between red mud dump 15 and stockyard back pool 16, be provided with stockyard return water pipe 1; it is two independently tanks that stockyard back pool 16 is built; comprise and store pH value greater than 9 buck back pool 7 with store pH value and be less than or equal to 9 little buck back pools 8; little buck back pool 8 is provided with upflow tube 9 and little buck return water pipe 14; on buck back pool 7, be connected with buck return water pipe 13; on buck return water pipe 13 and little buck return water pipe 14, be connected with simultaneously buck back water pump 10 and little buck back water pump 11 respectively; buck back water pump 10 and little buck back water pump 11 are positioned at the backwater pump house, can conveniently control like this and can play a very good protection to back water pump.On the return water pipe 1 in stockyard, pH value on-line detector 2 and Y-junction are installed, on pH value on-line detector 2, be connected with pH value on-line control system 12; The return water pipe 1 in stockyard is divided into two-way by Y-junction with it, on Y-junction, be connected with buck water inlet pipe 3 and little buck water inlet pipe 4, buck water inlet pipe 3 is connected with buck back pool 7, and on buck water inlet pipe 3, be connected with motorized valve 5, little buck water inlet pipe 4 connects with little buck back pool 8, and is connected with motorized valve 6 on little buck water inlet pipe 4.But the pH value of backwater also feeds back to pH value on-line control system 12 in the return water pipe 1 in pH value on-line detector 2 continuous detecting stockyards, and the size of the pH value that pH value on-line control system 12 is fed back according to pH value on-line detector 2 is controlled the opening and closing of motorized valve 5 and motorized valve 6.
When not rainfall at ordinary times, pH value on-line detector 2 detects the backwater pH value and all is higher than 9, pH value on-line detector 2 signals in pH value on-line control system 12, pH value on-line control system 12 sends signal at stop motorized valve 6, open motorized valve 5, allow red mud dump 15 interior backwater flow in the buck back pool 7 from stockyard return water pipe 1.When red mud dump continued rainfall, the pH value of rainfall initial stage backwater was generally still greater than 9, and this moment, motorized valve 6 still was in closing condition, and motorized valve 5 is in opened condition, and the backwater in the stockyard return water pipe 1 still enters in the buck back pool 7.Along with continuing of rainfall, pH value on-line detector 2 is less than or equal to 9 signal feedback when giving pH value on-line control system 12 with detected backwater pH value, pH value on-line control system 12 sends signal and opens motorized valve 6 immediately, close motorized valve 5, allow return water pipe 1 interior backwater in stockyard enter in little buck back pool 8, when rainfall end or rainfall minimizing, when pH value on-line detector 2 is given pH value on-line control system 12 with detected backwater pH value greater than 9 signal feedback, pH value on-line control system 12 sends signal at stop motorized valve 6, open motorized valve 5, allow backwater enter in the buck back pool 7.When rainfall amount is very big, when the water levels in the little buck back pool 8 rose at the bottom of the pipe of upflow tube 9, the little buck that reaches discharging standards was discharged into Sewage outlet nearby by the overflow port of upflow tube 9.Can guarantee like this that when raining heavily alkalinity can excessive contaminate environment greater than 9 backwater, the size that can pile the big or small planning and design back pool of factory again by red mud can be saved to produce and be taken up an area of and plant area's construction cost.
The backwater that is stored in the buck back pool 7 pumps to plant area's equipment to using with the unrestricted workshop section that requires of water ph value scope by the buck back water pump 10 that is connected on little buck return water pipe 13 with it.Backwater in little buck back pool 8 pumps to plant area's equipment to workshop section's use that the system of being limited in scope with water ph value requires by the little buck back water pump 11 that is connected on little buck return water pipe 14, can improve the utilization ratio of backwater like this.
Used PH on-line detector can directly be bought on market and obtain.
Claims (6)
1. the backwater diffluence of a dry method red mud storage yard utilizes method, comprise red mud dump and stockyard back pool, between red mud dump and stockyard back pool, be connected with the stockyard return water pipe, it is characterized in that: this method be the stockyard back pool be set to two independently pH value be less than or equal to little buck back pool of 9 greater than 9 buck back pool and pH value, be less than or equal at pH value on little buck back pool of 9 upflow tube be set; And on the stockyard return water pipe of stockyard back pool, a pH value monitor and Controlling System are being set, by pH value monitor and Controlling System the draining in the return water pipe of stockyard is drained in corresponding buck back pool or the little buck back pool according to the size of pH value, the draining that is stored in buck back pool and the little buck back pool is then returned plant area and is continued to utilize by being arranged on water recovery apparatus on buck back pool and the little buck back pool.
2. the backwater diffluence of dry method red mud storage yard according to claim 1 utilizes method, it is characterized in that: on the return water pipe of stockyard, also be connected with Y-junction, Y-junction is divided into 2 return branch with the stockyard return water pipe, 2 return branch are connected with buck back pool or little buck back pool respectively, and are connected with the motorized valve by pH value monitor and Controlling System control on 2 return branch respectively.
3. the backwater diffluence structure of a dry method red mud storage yard, comprise red mud dump (15) and stockyard back pool (16), between red mud dump (15) and stockyard back pool (16), be provided with stockyard return water pipe (1), it is characterized in that: stockyard back pool (16) comprises buck back pool (7) and little buck back pool (8), and upflow tube (9) is set on little buck back pool (8); On stockyard return water pipe (1), be connected with pH value on-line detector (2) and Y-junction, go up connection pH value on-line control system (12) at pH value on-line detector (2), on Y-junction, be connected with buck water inlet pipe (3) and little buck water inlet pipe (4), buck water inlet pipe (3) is connected with buck back pool (7), and on buck water inlet pipe (3), be connected with motorized valve (5), little buck water inlet pipe (4) is connected with little buck back pool (8), and be connected with motorized valve (6) on little buck water inlet pipe (4), the keying of motorized valve (5) and motorized valve (6) is controlled by PH on-line control system (12).
4. the backwater diffluence structure of dry method red mud storage yard according to claim 3 is characterized in that: be connected with little buck return water pipe (14) on little buck back pool (8), be connected with little buck back water pump (11) on little buck return water pipe (14).
5. the backwater diffluence structure of dry method red mud storage yard according to claim 3 is characterized in that: be connected with little buck return water pipe (13) on buck back pool (7), be connected with buck back water pump (10) at buck return water pipe (13).
6. the backwater diffluence structure of dry method red mud storage yard according to claim 3 is characterized in that: upflow tube (9) and sewage discharge pipe coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102011706A CN101353217B (en) | 2007-07-25 | 2007-07-25 | Backwater diffluence method for dry red mud disposal and backwater diffluence structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102011706A CN101353217B (en) | 2007-07-25 | 2007-07-25 | Backwater diffluence method for dry red mud disposal and backwater diffluence structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101353217A true CN101353217A (en) | 2009-01-28 |
| CN101353217B CN101353217B (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007102011706A Expired - Fee Related CN101353217B (en) | 2007-07-25 | 2007-07-25 | Backwater diffluence method for dry red mud disposal and backwater diffluence structure thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809551A (en) * | 2019-03-26 | 2019-05-28 | 中化重庆涪陵化工有限公司 | A kind of phosphor-gypsum backwater reutilization system |
| CN112982612A (en) * | 2021-03-02 | 2021-06-18 | 金建工程设计有限公司 | Flat-ground red mud disposal site and discharge method thereof |
| CN113383743A (en) * | 2021-06-29 | 2021-09-14 | 广东海洋大学 | Aquatic seedling domesticating device and application thereof |
-
2007
- 2007-07-25 CN CN2007102011706A patent/CN101353217B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809551A (en) * | 2019-03-26 | 2019-05-28 | 中化重庆涪陵化工有限公司 | A kind of phosphor-gypsum backwater reutilization system |
| CN112982612A (en) * | 2021-03-02 | 2021-06-18 | 金建工程设计有限公司 | Flat-ground red mud disposal site and discharge method thereof |
| CN113383743A (en) * | 2021-06-29 | 2021-09-14 | 广东海洋大学 | Aquatic seedling domesticating device and application thereof |
| CN113383743B (en) * | 2021-06-29 | 2023-07-07 | 广东海洋大学 | Aquatic seedling domestication device and application thereof |
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| Publication number | Publication date |
|---|---|
| CN101353217B (en) | 2010-11-10 |
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