CN105152424A - Device for removing heavy metal ions in industrial wastewater - Google Patents
Device for removing heavy metal ions in industrial wastewater Download PDFInfo
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- CN105152424A CN105152424A CN201510676362.7A CN201510676362A CN105152424A CN 105152424 A CN105152424 A CN 105152424A CN 201510676362 A CN201510676362 A CN 201510676362A CN 105152424 A CN105152424 A CN 105152424A
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Abstract
The invention discloses a device for removing heavy metal ions in industrial wastewater. Wastewater firstly enters a wastewater tank to be subjected to primary precipitation; the heavy-metal-ion-containing wastewater enters a precipitation tank 1; pulverized pyrite dross is added into the precipitation tank 1 to react with heavy metal ions and generate insoluble substances; the heavy-metal-ion-containing wastewater is subjected to primary filtration to remove part of heavy metal ions; after the reaction is finished, the wastewater is led into an electrolysis tank; part of heavy metal ions are reduced at the anode end by utilizing the electrolysis principle; and an electrolysis process can be utilized to remove abundant high-reducibility heavy metal ions in the wastewater. Thus, the purified water can be recycled.
Description
Technical field
The present invention relates to industrial waste water purifying and recycling field, particularly a kind of device removing trade effluent heavy metal ion.
Background technology
Along with the development of industrial and agricultural production, the increase in cities and towns and the demand of the expansion of scale to water increase day by day, simultaneously owing to entering water body containing some objectionable impurities in draining, cause the change on natural water body generation physics and chemistry, water quality is degenerated, the pollution of water has two classes: a class is natural pollution, and another kind of is artifact pollution.And the latter is main.Natural pollution is mainly caused by natural cause, geologic condition as special makes certain chemical element of certain areas a large amount of rich long-pending, and natural phant carries various material and flows into water body etc. and all can affect local water quality produce certain poisonous substance and rainfall drip washing air and ground in putrefaction process after.Artifact pollution be the sewage that produces in the life of the mankind and activity in production to the pollution of water, they comprise sanitary sewage, trade effluent and farmland drainage etc.Wherein, the pollution brought with trade effluent is again the most very.Each drips sewage and will pollute the water body of several times and even decades of times again.
Pollutant component in trade effluent and character have significant difference compared with city domestic sewage, and have following outstanding feature: 1, pollutant component is complicated, difference is large.Pollutant component in different cities and regional sanitary sewage and character similar, but the trade effluent between different industries, there is significant difference in its composition and character. it should be noted that same industry especially, waste water between different enterprise, its composition difference is also very large.Even same enterprise or factory, also there is larger difference in the waste water component between various processes.In a lot of situation, same production technique, under different periods or different operational conditions, the component of waste water also can change a lot.As the waste water that same printing and dyeing mill produces, will present multiple color within 1 day, the color of the treatment of dyeing wastewater plant effluent that this causes control measures bad also changes often.2, Pollutant levels wide ranges, fluctuation are greatly.Wastewater mass concentration distribution range in trade effluent is wide, and low a few mg/L, Gao Shihui reach hundreds of thousands of mg/L.Amplitude is comparatively large over time for the mass concentration of same waste water, and this brings difficulty just to treatment process design and daily operation management, also brings challenge to guarantee process water quality stabilizing simultaneously.3, difficult for biological degradation and toxic pollutant species is many, concentration is large.Often containing the difficult for biological degradation organic pollutant, toxicant etc. compared with multiple types or higher concentration in trade effluent, single know-why is utilized to be difficult to ensure water quality treatment, often need multiple technologies principle and processing unit combination, form the treatment process more complicated than city domestic sewage.4, processing target is various, water quality standard difference is large.Reuse after Industrial Wastewater Treatment or discharge approach, the whereabouts namely processing water outlet is various, comprise in reuse in technique, factory use mixedly, inter-plant reuse, region reuse, city planting ductwork discharge and directly discharge etc.Whereabouts is different, and water quality requirement is different, and treatment process is selected also different with processing target.The above outstanding feature of trade effluent, determine tupe and the treatment process that simply can not imitate city domestic sewage, simply can not indiscriminately imitate type of industry or with the waste water treatment process of class factory and operational management, therefore, set up based on trade effluent feature treatment process preferably and method of design, the problem in science that industrial wastewater pollution Controlling research needs emphasis to solve. grasp the treatment characteristic of waste water, suitable technique is selected for different trade effluents, determine best processing parameter and operation management mode, it is one of fundamental principle needing in waste water treatment engineering to follow.But, this fundamental principle, often out in the cold in industrial wastewater pollution practice of harnessing, cause the phenomenon that process choice is unreasonable, treatment effect is not up to standard often to occur.
The research in China's waste water treatment field, mostly concentrate on exploitation or the improvement of single technology, research for wastewater treatment evaluating characteristics and optimal process method is less, have to be strengthened. the exploitation of new technology can bring the development of field of waste water treatment undoubtedly, but the application of new technology and technique needs certain process and longer time.By the technique selecting to be suitable for, determine optimum operation operator scheme and condition, improving the effect that contaminated wastewater is administered, is the work that should first carry out, like this to guarantee water treatment effect more rationally, also more real.
Cycling utilization of wastewater and Waste Water Treatment optimizing operation are inseparable with management, and the latter is the former prerequisite implemented and guarantee.Different reuse approach, proposes different requirements to the water quality treatment of Waste Water Treatment and optimizing operation.About the tupe of waste water, different types of waste water mixed collection in factory, focus on pattern, bring very large difficulty to operational management.The problem that Wastewater Concentrated, trade effluent and sanitary sewage combination treatment between different enterprise are brought can be larger.Also a lot of operational management problems is really run in practice.Therefore, change the tupe of trade effluent, " categorised collection and the respectively process " of implementing waste water can reduce technical difficulty and the operational management difficulty of wastewater treatment greatly, is also conducive to the recycle realizing waste water.Industrial wastewater treatment facility fails to give full play to the major cause of benefit: one is lack budgetary restraints mechanism and effective supervisory system, many enterprises tie up or divert the fund for preventing and remedying pollution, or the pollution treatment fund of significant proportion are used on the fee per person of environmental protection institution staff and other equipments; Two is lack competition mechanism, and industrial wastewater pollution engineering prevention design is unreasonable, treatment facility technology does not pass a test, construction quality is poor, level of management are low.Existing environmental protection investments behavior and form of operation and administration seriously lag behind the commercialization of society.
All in all, China's Mineral industry ubiquity water consumption and wastewater discharge are large, the higher and problems that pollutent exceeds standard seriously, quantity discharged is large such as partial area heavy metal, prussiate, petroleum-type of suspended substance emission concentration in waste water.Along with China's Economic development enters the fast-developing phase of a new round, the increase of Mineral resources demand will speed up the development of Mineral industry, significantly strengthens the pressure to environment.Experiences and lessons tells us: just pollute and go to administer, often " improvement is unable to catch up with polluting, and builds and is unable to catch up with destroying ", must change thinking, carry forward vigorously cleaner production and recycling economy, take a new road to industrialization.From aspects such as industry, region, administrative control to large-scale point source of pollution and low profile source of pollution, Comprehensive control is proposed, to improve the overall water use efficiency of Mineral industry, waste water treatment level and comprehensive resource utilization rate comprehensively, fast and efficiently, improve the Sustainable Development Level of Mineral industry.
The level of comprehensive utilization of comprehensive raising big-and-middle-sized state-owned mineral products selecting and purchasing enterprise water resources and wastewater treatment level.Waste water and the pollutant discharge amount of big-and-middle-sized state-owned mineral enterprises have comparative advantage, add technological transformation and the reusing sewage management of extensive above enterprise, work out enforceable target water re-using rate, processing rate and emission compliance rate, to the quantity discharged reducing the water consumption of Mineral industry and waste water, pollutent, alleviate the water environment pollution load that Mineral industry causes.Mine drainage combines with water supply, improves waste water reclaiming level.The water displacement in mine is sizable, but there is water displacement and there is no rule, be difficult to the problem utilized, how a large amount of mine drainage is combined with water supply, improve waste water reclaiming level, walk comprehensive utilization and the Road of Cyclic Economy, in today that the contradiction of supply and demand for the water resource is outstanding day by day, particularly north water deficit area, has important practical significance.
Based on " production technique " theory, following treatment process is not pay the utmost attention to organic pollutant to change into mud and carbonic acid gas, but first consider the separating organic matters in waste water, concentrated, and make full use of the energy value (producing biological flue gas etc. as utilized anaerobically fermenting) of organism self.Therefore, the direct separation and utilization technology of Organic Pollutants in Wastewater will hold out broad prospects.Different from organism, the nutritive substances such as the nitrogen phosphorus in water then should not be paid the utmost attention to and be isolated, but first consider the feature utilizing its plant nutrient substance, produce high-quality biomass or the energy. when conditions permit, utilize micro-algae to the sorption process waste water of nitrogen phosphorus, not only can obtain good nitrogen phosphorus ligands effect, the frustule of high utility value (raw material etc. as biofuel) can also be produced, GHG carbon dioxide can also be absorbed in treating processes, being achieve many things at one stroke, is a forward-looking technology merited attention.
Problems existing in the actual demand that the successful experience of administering according to developed country industrial wastewater pollution and the current industrial wastewater pollution of advanced idea and China are administered and wastewater treatment practice and technical research process, in conjunction with the latest Progress that industrial wastewater pollution is administered, in Industrial Wastewater Treatment pattern, research and development target, water quality assessment, Con trolling index and treatment process design theory etc., transformation and the development of following 5 aspects should be realized: tupe focuses on to categorised collection from different sorts waste water mixed collection and processes preferential conversion respectively; From the research and development of attention wastewater treatment monotechnics, to paying attention to simultaneously, wastewater processing technology is integrated to be changed with the research for the treatment of process optimization method in research and development; Water quality Assessment of Organic Pollution is paid close attention to simultaneously from attention integrated concentration mark sense and is paid attention to " organism characteristic index " and changes; Discharge of wastewater Con trolling index is from attention conventional index to paying close attention to and pay attention to water quality safety and the transformation of synthetic biological toxicity index simultaneously; Suggestion of process design from " treatment process " to " production technique " changes.
Summary of the invention
Along with China's rapid development of economy; industrial production have also been obtained unprecedented development; but be unavoidablely; China due to the pollution problem do not noted environment protection and part production at the cost of the environment and cause more and more serious; high energy consumption, high pollutive industries have been not suitable with the development need of modern society; in particular to the wastewater problem that industrial production produces, govern the Economic development of China all the time.The object of the invention is to propose a kind of device removing trade effluent heavy metal ion, thus the waste water produced for China's industrial production proposes a kind of terms of settlement, alleviate waste water pollution on the environment.
For reaching this object, the present invention by the following technical solutions:
Remove a device for trade effluent heavy metal ion, comprising: heavy metal ion-containing waste water pond, settling tank 1, electrolyzer, adsorption tank, settling tank 2, transition pond, reverse osmosis pond containing filter membrane.
Waste water is introduced into wastewater disposal basin, carry out preliminary sedimentation, then heavy metal ion-containing waste water enters settling tank 1, the pyrite slag of pulverizing is added in settling tank 1, pyrite slag and heavy metal ion are reacted, generate indissoluble thing, like this heavy metal ion in heavy metal ion-containing waste water is tentatively filtered, remove a part of heavy metal ion, after having reacted, waste water is drained in electrolyzer, utilize electrolysis principle, reduce a part of heavy metal ion at positive terminal, electrolytic process can remove the heavy metal ion that in waste water, a large amount of reductibility is stronger.In electrolyzer, after positive terminal does not have obvious heavy metal to generate, solution is drained in adsorption tank, drop into the high molecular heavy metals ion remaval agent of long-chain at adsorption tank, adsorption precipitation is carried out to a small amount of heavy metal ion of residue, after this step, the heavy metal ion content in waste water greatly reduces, and is at this moment drained into by waste water in settling tank 2, in settling tank 2, waste water precipitates voluntarily, and suspended particle in solution is precipitated, and now solution reaches emission standard.Then make waste water enter transition pond, through transition pond by the reverse osmosis pond containing filter membrane, make solution remove heavy metal ion further.Obtained like this purifying waste water can recycling.
Embodiment
Technical scheme of the present invention is further illustrated below by embodiment.
Embodiment 1
Waste water is introduced into wastewater disposal basin, carry out preliminary sedimentation, then heavy metal ion-containing waste water enters settling tank 1, the pyrite slag of pulverizing is added in settling tank 1, pyrite slag and heavy metal ion are reacted, generate indissoluble thing, like this heavy metal ion in heavy metal ion-containing waste water is tentatively filtered, remove a part of heavy metal ion, after having reacted, waste water is drained in electrolyzer, utilize electrolysis principle, reduce a part of heavy metal ion at positive terminal, electrolytic process can remove the heavy metal ion that in waste water, a large amount of reductibility is stronger.In electrolyzer, after positive terminal does not have obvious heavy metal to generate, solution is drained in adsorption tank, drop into the high molecular heavy metals ion remaval agent of long-chain at adsorption tank, adsorption precipitation is carried out to a small amount of heavy metal ion of residue, after this step, the heavy metal ion content in waste water greatly reduces, and is at this moment drained into by waste water in settling tank 2, in settling tank 2, waste water precipitates voluntarily, and suspended particle in solution is precipitated, and now solution reaches emission standard.Then make waste water enter transition pond, through transition pond by the reverse osmosis pond containing filter membrane, make solution remove heavy metal ion further.Purifying waste water of obtaining can recycle, and water resources can recycle, and to reduce production cost, has saved water resources simultaneously.
Claims (4)
1. remove the device of trade effluent heavy metal ion for one kind, comprise: heavy metal ion-containing waste water pond, settling tank 1, electrolyzer, adsorption tank, settling tank 2, transition pond, reverse osmosis pond containing filter membrane, it is characterized in that, waste water containing heavy metal ion enters into settling tank 1 and carries out chemical reaction from wastewater disposal basin, the rough heavy metal ion removed contained by waste water.
2. a kind of device removing trade effluent heavy metal ion according to claim 1, is characterized in that, after rough heavy-metal ion removal, waste water enters into electrolyzer and carries out electrolytic reaction, removes heavy metal ion contained in waste water further.
3. a kind of device removing trade effluent heavy metal ion according to claim 1, it is characterized in that, waste water enters into adsorption tank after twice removal heavy metal, the high molecular heavy metals ion remaval agent containing long-chain is utilized to adsorb heavy metal ion residual in waste water, further heavy-metal ion removal.
4. a kind of device removing trade effluent heavy metal ion according to claim 1, is characterized in that, last waste water is by the reverse osmosis pond containing filter membrane, and to be further purified waste water, and the waste water in reverse osmosis pond can be recycled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510676362.7A CN105152424A (en) | 2015-10-19 | 2015-10-19 | Device for removing heavy metal ions in industrial wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510676362.7A CN105152424A (en) | 2015-10-19 | 2015-10-19 | Device for removing heavy metal ions in industrial wastewater |
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| CN105152424A true CN105152424A (en) | 2015-12-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455754A (en) * | 2020-12-27 | 2022-05-10 | 湖南博隆矿业开发有限公司 | Mineral processing wastewater treatment device |
| CN114804412A (en) * | 2022-04-15 | 2022-07-29 | 桂林电子科技大学 | Treatment process of mixed waste liquid of water quality online monitoring equipment |
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| CN104402147A (en) * | 2014-12-13 | 2015-03-11 | 株洲冶炼集团股份有限公司 | Technology for recycling low-calcium and low-chlorine purified water |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101811793A (en) * | 2009-02-24 | 2010-08-25 | 宝山钢铁股份有限公司 | Pretreatment process of chromium-containing wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455754A (en) * | 2020-12-27 | 2022-05-10 | 湖南博隆矿业开发有限公司 | Mineral processing wastewater treatment device |
| CN114804412A (en) * | 2022-04-15 | 2022-07-29 | 桂林电子科技大学 | Treatment process of mixed waste liquid of water quality online monitoring equipment |
| CN114804412B (en) * | 2022-04-15 | 2023-11-10 | 桂林电子科技大学 | Treatment process of mixed waste liquid of water quality on-line monitoring equipment |
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Application publication date: 20151216 |
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