CN106495365A - The advanced treatment apparatus of stibium-containing wastewater and technique under a kind of low temperature environment - Google Patents
The advanced treatment apparatus of stibium-containing wastewater and technique under a kind of low temperature environment Download PDFInfo
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- CN106495365A CN106495365A CN201611126272.1A CN201611126272A CN106495365A CN 106495365 A CN106495365 A CN 106495365A CN 201611126272 A CN201611126272 A CN 201611126272A CN 106495365 A CN106495365 A CN 106495365A
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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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses under a kind of low temperature environment stibium-containing wastewater advanced treatment apparatus, comprising collecting-tank, No. 1 medicine dissolving tank, one-level coagulating basin, agitator, first stage precipitation tank, No. 2 medicine dissolving tanks, two-stage coagulation pond, second-level settling pond and clear water reserviors；The invention also discloses the technique for being applied to the advanced treatment apparatus of stibium-containing wastewater under low temperature environment.The present invention is for stibium-containing wastewater and the advanced treating in contaminated river course.For extreme conditions such as low temperature, using two-stage complex coagulation method, adding sodium sulfide first, coagulating is precipitated, then add bodied ferric sulfate carries out coagulating, water outlet after precipitation.Handling process of the present invention up to more than 95%, can make water outlet antimony concentration be down to below 0.005mg/L the clearance of antimony in water, meet《Water environment quality standard》In standard limited value and China《Drinking Water hygienic practice》Require；Have that effluent quality is good, low temperature tolerance ability very strong, treatment effect is stable, easy to operate, sludge output is few.
Description
Technical field
The invention belongs to safety and environmental protection industry sewage processing technology field, is related to a kind of environment protection sewage treatment technology, specifically
It is related to the advanced treatment apparatus of stibium-containing wastewater and technique under a kind of low temperature environment.
Background technology
Antimony (Sb) is a kind of poisonous chemical element, irritant, be soluble in chloroazotic acid (also known as " king acid ", " nitrohydrochloric acid ",
It is a kind of corrosivity are very strong, emit yellow mist liquid).Antimony is primarily present in sulfide mineral stibnite in nature
(Sb2S3) in, it be not organism necessary to element, have stronger toxicity, to human body and biological there is chronic toxicity and carcinogenic
Property.Antimony Transport And Transformation process in the environment is mainly completed by water body.Antimony is that one kind has genotoxic potential and carcinogenecity
Element, if substantial amounts of antimony enter surface water environment in, not only cause the heavy metal pollution of water environment, can also be to animal and plant body
Harm is produced, is detrimental to health even with water body.China is used as maximum antimony product specie state, there is provided at the beginning of the antimony in the whole world 80%
Level product.In antimony ore exploitation, smelting process, the discharge of stibium-containing wastewater, the stacking of slag all can be threatened to environment build-up of pressure
Ecological safety.It is very urgent that water body antimony pollution is effectively administered.
Antimony is successively classified as top-priority pollutant by European Union, EPA, Japanese environmental sanitation Room etc..World Health Organization (WHO)
Antimony content in regulation drinking water must not be higher than 5 μ g/L.China《Water environment quality standard》(GB3838-2002) and《Raw
Water hygiene specification living》Specify in (Ministry of Public Health, calendar year 2001) antimony limit value be 5 μ g/L.
The conventional handling process of antimony include coagulating sedimentation, faintly acid iron salt coagulating sedimentation, absorption, electrochemical coagulation precipitation,
Ion exchange etc..Chemical flocculation makes the antimony in water form precipitation and be removed by outer adding medicine, is Treatment of Industrial Water
In the most frequently used be also one of topmost method, this method is simple to operate, and low cost is widely used；Hydrolyzate due to antimony
General with sulfide precipitation relatively thin, colloid is formed easily, can not be removed from water with the general sedimentation method, it usually needs flocculant.Inhale
Attached it is generally suitable for the waste water that treating capacity is big, concentration is relatively low；Include for the adsorbent except antimony：Hydroxyapatite powder, hydration
Manganese oxide, bentonite, kieselguhr, activated alumina, aluminium slag activated carbon, cellulose, chitin, shitosan, rice husk ash and day
Metal-oxide and its hydrous oxide of right or synthesis etc..Electrochemical method is removed antimony by the electro-deposition of antimony.Ion
Exchange process generally processes Antimony in Waste Water ion, amino, alkyl, phosphate chelating sun using ion exchange resin or activated alumina
Ion exchange resin also has better effects.
These processing methods are failed to understand to the depth removal effect of low concentration antimony in water body mainly for high concentration stibium-containing wastewater
Aobvious, especially the efficient removal of antimony is the difficult point of domestic and international research under cryogenic, and the water quality after process is also difficult to reach me
State's Drinking Water water standard is required.Therefore, in order to rapidly and efficiently being located by the surface water of micro heavy antimony pollution
Reason, needs exploitation urgent technique efficient, cheap, easy to use badly.
Content of the invention
It is an object of the invention to provide a kind of simple structure, be suitable for low temperature environment under stibium-containing wastewater advanced treating device and
Technique, by advanced treatment apparatus and technique, carries out quick emergency processing to stibium-containing wastewater or by the surface water of antimony pollution,
Treatment effeciency is low at low ambient temperatures to solve the problems, such as existing treatment technology.
The technical solution adopted in the present invention is that the advanced treatment apparatus of stibium-containing wastewater under a kind of low temperature environment, comprising collection
Pond, No. 1 medicine dissolving tank, one-level coagulating basin, agitator, first stage precipitation tank, No. 2 medicine dissolving tanks, two-stage coagulation pond, second-level settling pond and
Clear water reserviors；Wherein, described collecting-tank, one-level coagulating basin, first stage precipitation tank, two-stage coagulation pond, second-level settling pond and clear water reserviors
It is sequentially connected；No. 1 medicine dissolving tank is connected with one-level coagulating basin, and No. 2 medicine dissolving tanks are connected with two-stage coagulation pond；Agitator is arranged on one-level
In coagulating basin and two-stage coagulation pond.
The invention also discloses a kind of technique for being applied to the advanced treatment apparatus of stibium-containing wastewater under the low temperature environment, should
Handling process includes following operating procedure：
Step one：Configuration medicinal liquid
Sodium sulfide is dissolved in No. 1 drug dissolving tank, dissolve bodied ferric sulfate medicament, be sufficiently stirred in No. 2 drug dissolving tanks；
Step 2：Enhanced coagulation
Stibium-containing wastewater enters one-level coagulating basin, the sodium sulfide that will be prepared in No. 1 drug dissolving tank through transfer pipeline from collecting-tank
Solution adds one-level coagulating basin, carries out coagulating, removes the antimony pollution thing in waste water；
Step 3：One-level is precipitated
The water outlet of one-level coagulating basin enters first stage precipitation tank, carries out solid-liquid separation；
Step 4：Two-stage coagulation
First stage precipitation tank water outlet enters two-stage coagulation pond, and the polymeric ferrous sulphate solution prepared in No. 2 drug dissolving tanks is added
Two-stage coagulation pond, proceeds coagulating, removes the antimony pollution thing in waste water；
Step 5：Clear water reuse
The water outlet of two-stage coagulation pond enters second-level settling pond, and after precipitation clarification, supernatant enters clear water reserviors, is back to life
Production. art or outer row
The technique for being applied to advanced treatment apparatus of the present invention, is further characterized in that,
The coagulating time in No. 1 coagulating basin and two-stage coagulation pond is 15～20 minutes, the precipitation of the sedimentation tank
Time is 1 hour.
Weight in No. 1 coagulating basin according to antimony with sodium sulfide compares 1：20～30 add sodium sulfide, the two-stage coagulation
Weight in pond according to antimony with bodied ferric sulfate compares 1：30～50 add bodied ferric sulfate.
Compared with prior art, under a kind of low temperature environment of the invention, the advanced treatment apparatus of stibium-containing wastewater and technique are used for containing
Antimony waste water and the advanced treating in contaminated river course.For extreme conditions such as low temperature, using two-stage complex coagulation method, sulfur is added first
Changing sodium, coagulating is precipitated, then add bodied ferric sulfate carries out coagulating, water outlet after precipitation.Handling process pair of the present invention
In water, the clearance of antimony can be made water outlet antimony concentration be down to below 0.005mg/L, meet (GB3838 up to more than 95%
2002)《Water environment quality standard》In standard limited value, while also meeting China《Drinking Water hygienic practice》Require；
Have that effluent quality is good, low temperature resistant, easy to operate, sludge output few, it is adaptable to stibium-containing wastewater and get dirty under low temperature environment
The advanced treating in dye river course.
Low temperature tolerance ability of the present invention is very strong, and treatment effect is stable, minimum tolerable -20 DEG C of low temperature, while also having following
Feature：
1st, sludge output is few, and mud is difficult to redissolve；
2nd, it is not required to acid adding or alkali adjusts pH；
3rd, processing meanss reasonable in design, live Fast Installation is disposed and can put into operation；
The material and medicament of routine of the 4, sampling, processing cost are low, and the impact to environment is little.
Description of the drawings
Fig. 1 is the advanced treatment apparatus structural representation of stibium-containing wastewater under low temperature environment of the present invention；
Fig. 2 is the advanced treatment apparatus process chart of stibium-containing wastewater under low temperature environment of the present invention；
Fig. 3 is conventional flocculation sediment PROCESS FOR TREATMENT design sketch；
Fig. 4 is conventional two-stage flocculation sediment PROCESS FOR TREATMENT design sketch；
Fig. 5 is present invention process first time test process design sketch；
Fig. 6 is second test process design sketch of present invention process.
In figure：1. collecting-tank, No. 2.1 medicine dissolving tanks, 3. one-level coagulating basin, 4. agitator, 5. first stage precipitation tank, No. 6.2 are molten
Medicine pond, 7. two-stage coagulation pond, 8. second-level settling pond, 9. clear water reserviors.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
The advanced treatment apparatus of stibium-containing wastewater under a kind of low temperature environment, as shown in figure 1, include 1, No. 1 medicine dissolving tank of collecting-tank
2nd, one-level coagulating basin 3, agitator 4, first stage precipitation tank 5, No. 2 medicine dissolving tanks 6, two-stage coagulation pond 7, second-level settling pond 8 and clear water reserviors
9；Wherein, collecting-tank 1, one-level coagulating basin 3, first stage precipitation tank 5, two-stage coagulation pond 7, second-level settling pond 8 and clear water reserviors 9 sequentially phase
Even；No. 1 medicine dissolving tank 2 is connected with one-level coagulating basin 3, and No. 2 medicine dissolving tanks 6 are connected with two-stage coagulation pond 7；Agitator 4 is arranged on one-level
In coagulating basin 3 and two-stage coagulation pond 7.
The process operation step of the advanced treatment apparatus of stibium-containing wastewater under low temperature environment of the present invention, as shown in Fig. 2
Step one：Configuration medicinal liquid
Sodium sulfide is dissolved in No. 1 drug dissolving tank 2, dissolve bodied ferric sulfate medicament, be sufficiently stirred in No. 2 drug dissolving tanks 6；
Step 2：Enhanced coagulation
Stibium-containing wastewater enters one-level coagulating basin 3, the sulfuration that will be prepared in No. 1 drug dissolving tank 2 through transfer pipeline from collecting-tank 1
Sodium solution adds one-level coagulating basin 3, carries out coagulating, removes the antimony pollution thing in waste water；
Step 3：One-level is precipitated
3 water outlet of one-level coagulating basin enters first stage precipitation tank 5, carries out solid-liquid separation；
Step 4：Two-stage coagulation
5 water outlet of first stage precipitation tank enters two-stage coagulation pond 7, and the polymeric ferrous sulphate solution prepared in No. 2 drug dissolving tanks 6 is added
Enter two-stage coagulation pond 7, proceed coagulating, remove the antimony pollution thing in waste water；
Step 5：Clear water reuse
7 water outlet of two-stage coagulation pond enters second-level settling pond 8, and after precipitation clarification, supernatant enters clear water reserviors 9, reuse
In production technology or outer row.
Embodiment
Test 1：
Conventional flocculation sediment PROCESS FOR TREATMENT effect：After a certain section is contaminated, about 30 times or so of antimony concentration over-standard passes through
Coagulating sedimentation carries out engineering reduction.First, add sulphuric acid or hydrochloric acid adjusts river pH value for 6 or so；Then iron salt coagulation is added
Agent.Two-stage check dam is set up after dispensing point, as settling zone, is staticly settled for floccule containing antimony.Monitoring Data shows：Throw
Before medicine, antimony concentration is averagely exceeded 24 times, and after process, antimony concentration is averagely exceeded 8.5 times, and the average rejection of antimony is up to 64.6%.Conventional wadding
Retrogradation shallow lake PROCESS FOR TREATMENT effect is as shown in Figure 3.
Test 2：
Conventional two-stage flocculation sediment PROCESS FOR TREATMENT effect：Dispensing point is newly established, one is entered to the water outlet of first order coagulating sedimentation
Step process.After the point normally runs, the average times of ultra standard of water outlet antimony concentration is down to 5 times or so by 8.5 times or so, and concrete removal is imitated
Fruit is as shown in Figure 4.
Test 3：
Present invention process first time test process effect：Big for winter day and night temperature, affect medicament to ask except antimony effect etc.
Topic, sets up sodium sulfide dispensing point.After transformation, the average times of ultra standard of water outlet antimony concentration is down to 1.6 times or so by 5 times or so, and antimony is put down
Rejection is up to more than 85%.Concrete removal effect is as shown in Figure 5.
Test 4：
Second test process effect of present invention process：To move on dispensing point, and carry out heating molten medicine transformation；At newly-built one
Cofferdam intercepts flco, further improves scavenging effect.After transformation, the average times of ultra standard of water outlet antimony concentration is down to by 1.6 times or so
0.32 times or so, progressively tend to up to standard, the average rejection of antimony is up to more than 95%.Water outlet antimony concentration is continually and steadily up to standard.Specifically go
Remove effect as shown in Figure 6.
Can be seen that by applying after the present invention from removal effect datagram, effectively reduce the concentration of water pollutant,
Highly important effect is played to the reduction of pollutant.
Above-mentioned embodiment is several examples of the present invention, is not intended to limit enforcement and the interest field of invention, all
The equivalence changes that makes according to the content described in the present patent application scope of patent protection and modification, all should be included in the present patent application
In the scope of the claims.
Claims (4)
1. under a kind of low temperature environment stibium-containing wastewater advanced treatment apparatus, it is characterised in that：Comprising collecting-tank (1), No. 1 medicine dissolving tank
(2), one-level coagulating basin (3), agitator (4), first stage precipitation tank (5), No. 2 medicine dissolving tanks (6), two-stage coagulation pond (7), two-stage precipitations
Pond (8) and clear water reserviors (9)；Wherein, described collecting-tank (1), one-level coagulating basin (3), first stage precipitation tank (5), two-stage coagulation pond
(7), second-level settling pond (8) and clear water reserviors (9) are sequentially connected；No. 1 medicine dissolving tank (2) is connected with one-level coagulating basin (3), No. 2 molten medicines
Pond (6) is connected with two-stage coagulation pond (7)；Agitator (4) is in one-level coagulating basin (3) and two-stage coagulation pond (7).
2. a kind of technique for being applied to the advanced treatment apparatus of stibium-containing wastewater under low temperature environment as claimed in claim 1, its feature
It is, the technique includes following operation process step：
Step one：Configuration medicinal liquid
Sodium sulfide is dissolved in No. 1 drug dissolving tank (2), dissolve bodied ferric sulfate medicament, be sufficiently stirred in No. 2 drug dissolving tanks (6)；
Step 2：Enhanced coagulation
Stibium-containing wastewater enters one-level coagulating basin (3), the sulfur that will be prepared in No. 1 drug dissolving tank (2) through transfer pipeline from collecting-tank (1)
Change sodium solution and add one-level coagulating basin (3), carry out coagulating, remove the antimony pollution thing in waste water；
Step 3：One-level is precipitated
One-level coagulating basin (3) water outlet enters first stage precipitation tank (5), carries out solid-liquid separation；
Step 4：Two-stage coagulation
First stage precipitation tank (5) water outlet enters two-stage coagulation pond (7), the polymeric ferrous sulphate solution that will be prepared in No. 2 drug dissolving tanks (6)
Two-stage coagulation pond (7) is added, proceeds coagulating, remove the antimony pollution thing in waste water；
Step 5：Clear water reuse
Two-stage coagulation pond (7) water outlet enters second-level settling pond (8), and after precipitation clarification, supernatant enters clear water reserviors, is back to
Production technology or outer row (9).
3. be applied to the technique of advanced treatment apparatus according to claim 2, it is characterised in that No. 1 coagulating basin (3) and
The coagulating time in two-stage coagulation pond (7) is 15～20 minutes, and the sedimentation time of sedimentation tank (8) is 1 hour.
4. the technique of advanced treatment apparatus is applied to according to claim 2, it is characterised in that in No. 1 coagulating basin (3)
Compare 1 according to weight of the antimony with sodium sulfide：20～30 add sodium sulfide, according to antimony and polyaluminum sulfate in two-stage coagulation pond (7)
The weight of ferrum compares 1：30～50 add bodied ferric sulfate.
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| CN201611126272.1A CN106495365A (en) | 2016-12-09 | 2016-12-09 | The advanced treatment apparatus of stibium-containing wastewater and technique under a kind of low temperature environment |
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| CN201611126272.1A CN106495365A (en) | 2016-12-09 | 2016-12-09 | The advanced treatment apparatus of stibium-containing wastewater and technique under a kind of low temperature environment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162140A (en) * | 2017-06-07 | 2017-09-15 | 环境保护部华南环境科学研究所 | The exceeded emergence treating method of molybdenum in molybdic tailing sand overlying water under a kind of low temperature |
| CN108726799A (en) * | 2018-06-02 | 2018-11-02 | 苏州弘宇水处理工程服务有限公司 | Dyeing waste water efficiently removes antimony technique |
| CN112174395A (en) * | 2020-11-13 | 2021-01-05 | 中冶京诚工程技术有限公司 | Multistage coagulating sedimentation device |
| CN113845254A (en) * | 2021-10-28 | 2021-12-28 | 湖南水口山有色金属集团有限公司 | Method for advanced treatment of rainwater in smelting plant area |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162140A (en) * | 2017-06-07 | 2017-09-15 | 环境保护部华南环境科学研究所 | The exceeded emergence treating method of molybdenum in molybdic tailing sand overlying water under a kind of low temperature |
| CN108726799A (en) * | 2018-06-02 | 2018-11-02 | 苏州弘宇水处理工程服务有限公司 | Dyeing waste water efficiently removes antimony technique |
| CN112174395A (en) * | 2020-11-13 | 2021-01-05 | 中冶京诚工程技术有限公司 | Multistage coagulating sedimentation device |
| CN113845254A (en) * | 2021-10-28 | 2021-12-28 | 湖南水口山有色金属集团有限公司 | Method for advanced treatment of rainwater in smelting plant area |
| WO2023070557A1 (en) * | 2021-10-28 | 2023-05-04 | 湖南水口山有色金属集团有限公司 | Method for advanced treatment of rainwater in smelting plant area |
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