CN203498201U - Heavy metal ion wastewater treatment device - Google Patents
Heavy metal ion wastewater treatment device Download PDFInfo
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- CN203498201U CN203498201U CN201320612313.3U CN201320612313U CN203498201U CN 203498201 U CN203498201 U CN 203498201U CN 201320612313 U CN201320612313 U CN 201320612313U CN 203498201 U CN203498201 U CN 203498201U
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- heavy metal
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Abstract
The utility model discloses a heavy metal ion wastewater treatment device. The heavy metal ion wastewater treatment device is characterized in that a balancing tank, a neutral reaction tank, a coagulation reaction tank, a concentration tank, a tubular membrane filter and a clean water tank are sequentially connected in series, wherein sludge at the bottom of the concentration tank enters a sludge tank, supernate in the sludge tank and a filter liquid of a filter press return to the balancing tank to be circulated, and a concentrated liquid of the tubular membrane filter returns to the concentration tank to be processed. According to the heavy metal ion wastewater treatment device, the different pH value ranges are controlled aiming at various different heavy metal ions, the precipitation of hydroxide is effectively carried out, and the heavy metal ions are maximally removed; most heavy metal floccules are moved through the precipitation of the concentration tank, so that the load of the tubular membrane filter is reduced; the flocculates leaking to a rear pipe or the flocculates having small flocculating constituents are further filtered and removed through the tubular membrane filter, so that water produced by a membrane can directly meet an environmental-friendly emission standard, the effluent quality is effectively guaranteed, and the heavy metal pollution is maximally reduced.
Description
Technical field
The utility model relates to environment-protective water processing technology field, the equipment that especially a kind of effluent containing heavy metal ions is processed.
Background technology
In environment and human health field, heavy metal mainly refers to the heavy metals such as mercury (Hg), cadmium (Cd), plumbous (Pb), chromium (Cr), arsenic (As), copper (Cu), zinc (Zn), cobalt (Co), nickel (Ni).The industries such as mining, metallurgy, chemical industry are man-made pollution sources main in water body, and the excessive enrichment meeting of heavy metal in food chain causes very large harm to physical environment and HUMAN HEALTH.Chemical method is to process at present the main method of heavy metal-containing waste water both at home and abroad, its principle is to make the heavy metal that is dissolved state in waste water change water-fast heavy metal compound into by chemical reaction, by filtering, remove from the aqueous solution with the separated throw out that makes, comprise neutralization precipitation method, sulphide precipitation, ferrite coprecipitation method.But adopt chemical method control condition comparatively strict, during processing, need strict control to form the best pH value of precipitation of hydroxide and the granular size of throw out in precipitation process, while especially containing the amphoteric metals such as Zn, Pb, Sn, Al in waste water, pH value is higher, may have tendency again.The supernatant liquor obtaining after available technology adopting chemical precipitation method, directly discharge after mechanical filter, the method can make the concentration of heavy metal in waste water drop to national emission request substantially.Yet, due to the effect of settling of settling tank and the filter effect of mechanical filter directly affect water outlet containing heavy metal concentration, so often in actual moving process, in discharge water, heavy metal content is fluctuated, has very large pollution hidden trouble.If in flocculation process, due to the deviation of flocculation agent chemical feeding quantity, form heavy metal hydroxide flco less than normal, settling velocity is slower, flco will enter Hou Dao along with supernatant liquor, also can cause heavy metal content in water outlet to surpass emission request, also has very large pollution hidden trouble.
Utility model content
It is unstable that the applicant discharges water quality after for above-mentioned existing chemical Treatment heavy metal-containing waste water, there is the larger shortcomings such as pollution hidden trouble, the equipment that provides a kind of effluent containing heavy metal ions rational in infrastructure to process, thereby can at utmost reduce the heavy metal content in water outlet, guarantee stable effluent characteristics.
The technical scheme that the utility model adopts is as follows:
The equipment that a kind of effluent containing heavy metal ions is processed, the setting of connecting with clean water basin order of balancing tank, neutralization reaction pond, coagulation reaction tank, concentration basin, tubular membrane strainer, the bottom mud of concentration basin enters sludge sump, the supernatant liquor of sludge sump and the filtrate of pressure filter are back to balancing tank and again enter circulation, and the dope of tubular membrane strainer is back to concentration basin and processes.
The beneficial effects of the utility model are as follows:
The utility model, for various heavy metal ion, is controlled different pH value scopes, effectively carries out precipitation of hydroxide, to greatest extent heavy-metal ion removal.The utility model utilizes concentration basin precipitation to remove most heavy metal throw out, reduced the load that tubular membrane is filtered, for omitting the throw out that Dao Hou road or flocs unit are less, adopt tubular membrane strainer further to filter removal, only need a step can effectively remove heavy metal in waste water, TSS and part COD, replaced a series of filter plant, film produces water can directly adapt to environmental emission standard, effectively guarantees effluent characteristics, farthest reduces the pollution of heavy metal.
Accompanying drawing explanation
Fig. 1 is equipment drawing of the present utility model.
In figure: 1, balancing tank; 2, neutralization reaction pond; 3, coagulation reaction tank; 4, concentration basin; 5, tubular membrane strainer; 6, clean water basin; 7, sludge sump; 8, pressure filter.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
During effluent containing heavy metal ions treatment process described in the utility model adopts, with chemical coagulation and the method that tubular membrane filtration treatment technique combines, the heavy metal ion in waste water is removed, is comprised the following steps:
(1) neutralizing treatment: drop into alkali lye in effluent containing heavy metal ions, pH value is controlled within the scope of certain numerical value; Described alkali lye comprises one or several in lime, Wingdale, sodium carbonate, caustic soda, rhombspar, sodium hydroxide;
(2) carry out flocculation reaction: in effluent containing heavy metal ions, drop into flocculation agent, coagulant aids, described flocculation agent adopts one or several in polymerize aluminum chloride, bodied ferric sulfate, polymeric ferric aluminum, iron protochloride, ferrous sulfate;
(3) adopt concentration basin and tubular membrane strainer to carry out solid-liquid separation to the water outlet of coagulation reaction tank; Mud containing rate higher sewage in concentration basin bottom is aspirated and is directly entered sludge filter press and carry out sludge drying processing, filter cake outward transport after press filtration by sludge pump.Concentration basin supernatant liquor carries out tubular membrane and filters rear reuse, and tubular membrane filtration dope is back to concentration basin and processes.
As shown in Figure 1, effluent containing heavy metal ions treatment facility described in the utility model comprises the balancing tank 1 of collecting heavy metal wastewater thereby, the rear order series connection of balancing tank 1 arranges neutralization reaction pond 2, coagulation reaction tank 3, reaction tank water outlet enters concentration basin 4 and precipitates with tubular membrane strainer 5 and filter, the clear water of tubular membrane strainer 5 enters clean water basin 6 storage reuses, the bottom mud of concentration basin 4 enters sludge sump 7, mud cake outward transport after pressure filter 8 press filtrations, the supernatant liquor of sludge sump 7 and the filtrate of pressure filter are back to balancing tank 1 and again enter circulation, the dope of tubular membrane strainer 5 is back to concentration basin 4 and processes.
The utility model utilizes concentration basin precipitation to remove most heavy metal throw out, reduced the load that tubular membrane is filtered, for omitting the throw out that Dao Hou road or flocs unit are less, adopt tubular membrane strainer further to filter removal, thereby can effectively guarantee effluent characteristics, farthest reduce the pollution of heavy metal.The tubular membrane strainer 5 that the utility model adopts has adopted unique compound film tube, its pvdf membrane can be cross-linked or be embedded in PE supporting tube inwall with PVDF supporting tube inwall admirably and form powerful combination with supporting tube, film pipe can be worked under higher operating pressure and backwash pressure and obtain high solid removal efficiency and membrane flux, thereby reduce system floor space.Tube type filter membrance assembly includes the many film pipes that are composited by pvdf membrane and porous tubular support: wherein supporting tube adopts sintering process to be prepared from by HDPE or PVDF, have abundant meshy surface pore system and spongiform three-dimensional pore system, pvdf membrane can be embedded into and in these holes, forms powerful combination with supporting tube and make film pipe have excellent separation performance and extremely strong structural stability.Periosteum assembly can not only move and can tolerate most aggressive chemistry medicaments under 0～14 pH condition.Periosteum assembly adopts cross flow filter mode, and during operation, feed liquid flows in film pipe enough to form the speed of turbulent flow.Under the pressure-driven of 20～80psi, water sees through fenestra and flows to film pipe outside, and solid particulate tunicle is trapped in film pipe inside; Thereby turbulent flow can prevent the particle being trapped and deposit and maintain the high-throughput of film and extend filtration cycle on film inside pipe wall.The design of cross flow filter and tube-type micropore film combines without using pre-filtering, and can Disposal quality concentration high to 5% feed liquid.
Embodiment mono-:
| ? | Influent quality | Effluent quality |
| Lead ion, Pb 2+ | 3～10 mg/l | ≤0.2mg/l |
| CODcr | ≤300mg/l | ≤80 mg/l |
| PH value | 1～2 | 6～9 |
| SS | ≤200mg/l | ≤20mg/l |
The processing step of processing above-mentioned lead waste water is as follows:
(1) neutralizing treatment: be sodium hydroxide to adding a certain amount of alkali lye in lead waste water, pH value is modulated to 9.2～9.5;
(2) flocculation reaction: add 150mg/L flocculant poly aluminum chloride in lead waste water, 20mg/L coagulant aids polyacrylamide, 15～20 minutes stirring reaction time, then carries out coagulating sedimentation;
(3) tubular membrane is filtered: adopt the tubular membrane filtration device of DF to carry out solid-liquid separation, effluent quality ginseng sees the above table.
Embodiment bis-:
| ? | Influent quality | Effluent quality |
| Cr 6+Ion | 3～10 mg/l | ≤0.2mg/l |
| CODcr | ≤300mg/l | ≤80 mg/l |
| PH value | 1～2 | 6～9 |
| SS | ≤200mg/l | ≤20mg/l |
The processing step of processing above-mentioned chromate waste water is as follows:
(1) neutralizing treatment: add a certain amount of alkali lye calcium hydroxide in chromate waste water, pH value is modulated between 7.5～9.0;
(2) flocculation reaction: in chromate waste water, add 120mg/L flocculation agent aluminium chlorohydroxide, 15mg/L coagulant aids polyacrylamide, stirring reaction time 10-15 minute, then carries out coagulating sedimentation;
(3) tubular membrane is filtered: adopt the tubular membrane filtration device of DF to carry out solid-liquid separation, effluent quality ginseng sees the above table.
Embodiment tri-:
| ? | Influent quality | Effluent quality |
| Cu 2+ | ≤30mg/l | ≤0.5mg/l |
| CODcr | ≤300mg/l | ≤80mg/l |
| PH value | ≤2～5 | 6～9 |
| SS | ≤200mg/l | ≤20mg/l |
The processing step of processing above-mentioned copper-containing wastewater is as follows:
(1) neutralizing treatment: add a certain amount of alkali lye sodium carbonate in copper-containing wastewater, pH value is modulated between 8～14;
(2) flocculation reaction: in copper-containing wastewater, add 120mg/L flocculation agent ferrous sulfate, 15mg/L coagulant aids polyacrylamide, stirring reaction time 15-30 minute, then carries out coagulating sedimentation;
(3) tubular membrane is filtered: adopt the tubular membrane filtration device of DF to carry out solid-liquid separation, effluent quality ginseng sees the above table.
More than describing is to explanation of the present utility model, is not the restriction to utility model, and without prejudice to the utility model spirit in the situation that, the utility model can be done any type of modification.
Claims (1)
1. the equipment that an effluent containing heavy metal ions is processed, it is characterized in that: the setting of connecting with clean water basin (6) order of balancing tank (1), neutralization reaction pond (2), coagulation reaction tank (3), concentration basin (4), tubular membrane strainer (5), the bottom mud of concentration basin (4) enters sludge sump (7), the supernatant liquor of sludge sump (7) and the filtrate of pressure filter are back to balancing tank (1) and again enter circulation, and the dope of tubular membrane strainer (5) is back to concentration basin (4) and processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612313.3U CN203498201U (en) | 2013-10-08 | 2013-10-08 | Heavy metal ion wastewater treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612313.3U CN203498201U (en) | 2013-10-08 | 2013-10-08 | Heavy metal ion wastewater treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203498201U true CN203498201U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320612313.3U Expired - Fee Related CN203498201U (en) | 2013-10-08 | 2013-10-08 | Heavy metal ion wastewater treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203498201U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466843A (en) * | 2013-10-08 | 2013-12-25 | 宜兴市欧瑞特环保科技有限公司 | Technology and device for treating heavy metal ion wastewater |
| CN113620454A (en) * | 2020-05-08 | 2021-11-09 | 无锡蓝湾资源再生科技有限公司 | Tubular microfiltration membrane treatment system for copper-containing wastewater |
-
2013
- 2013-10-08 CN CN201320612313.3U patent/CN203498201U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466843A (en) * | 2013-10-08 | 2013-12-25 | 宜兴市欧瑞特环保科技有限公司 | Technology and device for treating heavy metal ion wastewater |
| CN113620454A (en) * | 2020-05-08 | 2021-11-09 | 无锡蓝湾资源再生科技有限公司 | Tubular microfiltration membrane treatment system for copper-containing wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Jinhuan Environmental Protection Equipment Co., Ltd. Assignor: Yixing Ouruite Environmental Protection Technology Co., Ltd. Contract record no.: 2016320010014 Denomination of utility model: Heavy metal ion wastewater treatment device Granted publication date: 20140326 License type: Exclusive License Record date: 20160310 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20181008 |