CN108529782A - A kind of industrial wastewater treatment device and treatment process - Google Patents
A kind of industrial wastewater treatment device and treatment process Download PDFInfo
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- CN108529782A CN108529782A CN201710129376.6A CN201710129376A CN108529782A CN 108529782 A CN108529782 A CN 108529782A CN 201710129376 A CN201710129376 A CN 201710129376A CN 108529782 A CN108529782 A CN 108529782A
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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
- C02F9/00—Multistage 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
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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
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention provides a kind of industrial wastewater treatment device,Sequence includes former pond successively,Regulating reservoir,Sedimentation basin,Adsorption tower,Membrane filtration system and PLC control system,Detector for content of heavy metal is equipped with above former pond,Detector for content of heavy metal is electrically connected with PLC control system,The first agitating device is equipped in regulating reservoir,Regulating reservoir lower end is equipped with pH sensors and static pressure type liquid level sensor,Connection pH value adjusts liquid injection device above regulating reservoir,The second agitating device is equipped in sedimentation basin,Second agitating device is electrically connected with PLC control system,Ultrasonic liquid level sensor is equipped with above sedimentation basin,Heavy metal chelating agent case is connected above sedimentation basin,Hydrogel adsorbent is filled in adsorption tower,Membrane filtration system includes the cartridge filter being connected in series with,Hyperfiltration membrane assembly,Nanofiltration membrane component and reverse osmosis membrane assembly,The present invention is few to the equipment of heavy metal containing wastewater treatment,Floor space is small,Heavy metal removing rate is high,The present invention also provides a kind of technique for treating industrial wastewater.
Description
Technical field
The invention belongs to environmental technology fields, more particularly, to a kind of industrial wastewater treatment device and treatment process.
Background technology
In recent years, with the acceleration of industrialization and urbanization, the industries such as mining, metallurgy, chemical industry, process hides, plating, electronics are fast
Speed development, has discharged plurality of heavy metal pollutant, in addition unreasonable stacking and landfill, and heavy metal contaminants constantly enter water body
In, so that the content of beary metal in water body recovery technology, S ＆ W life biology is sharply increased, China belongs to developing country,
While rapid economic development, it is also faced with serious heavy metal wastewater thereby pollution problem, therefore, reinforces heavy metal wastewater thereby pollution prison
Survey, prevent and administer particularly important, effectively removing heavy metal in waste water becomes current urgent task.
Currently, the processing method of heavy metal ion-containing waste water mainly have chemical precipitation method, membrane separation process, ion-exchange,
A variety of processing methods are usually combined in the existing processing equipment to heavy metal-containing waste water, to reach by electroosmose process and absorption method
To the good effect for removing removing heavy metals, still, in the prior art, need a variety of reactions that can remove the heavy metal in waste water
It removes, to reach discharge standard, the especially removal to nickel metal, existing complexing agent is bad to the removal effect of nickel, is to cause
The main reason for most of electroplating enterprise heavy metals emission is exceeded, in addition, more metal removal equipment, causes integral device to account for
Ground area is big.
Invention content
The problem to be solved in the present invention is to provide a kind of small with good heavy metals removal effect, occupation area of equipment
Industrial wastewater treatment device.
The present invention also provides a kind of simple heavy metal waste water treatment process of minimizing technology.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of industrial wastewater treatment device, sequentially according to
Secondary includes former pond, regulating reservoir, sedimentation basin, adsorption tower, membrane filtration system and PLC control system, is equipped with above the former pond
Detector for content of heavy metal, the test chamber of the detector for content of heavy metal is connect with the former pond by liquid suction pipe, described
Liquid suction pipe is equipped with miniature suction pump, and the detector for content of heavy metal is electrically connected with the PLC control system, the heavy metal
Heavy metal in waste water content value is transmitted in PLC control system by content detection instrument, and the first stirring is equipped in the regulating reservoir and is filled
It sets, the regulating reservoir lower end is equipped with pH sensors and static pressure type liquid level sensor, is connected with above the regulating reservoir for adjusting
The pH value of liquid acid-base value adjusts liquid injection device in the regulating reservoir, and the second agitating device is equipped in the sedimentation basin, described
Second agitating device is electrically connected with the PLC control system, and the PLC control system controls the second agitating device intermittent stirring,
It is equipped with ultrasonic liquid level sensor above the sedimentation basin, heavy metal chelating agent case, the huge sum of money are connected above the sedimentation basin
Belong to agent for capturing case in heavy metal chelating agent be pumped into the sedimentation basin by metering pump, the metering pump with it is described
PLC control system is electrically connected, and heavy metal ion precipitation is generated in the sedimentation basin, it is described heavy that the heavy metal ion precipitation passes through
Shallow lake pond lower end is discharged, the recycling after filter press, and hydrogel adsorbent, the adsorption tower are filled in the adsorption tower
Top is equipped with elution liquid case, and the adsorption tower lower end is connected with heavy metal recovery liquid case, and the membrane filtration system sequence is wrapped successively
Include cartridge filter, hyperfiltration membrane assembly, nanofiltration membrane component and reverse osmosis membrane assembly, the hyperfiltration membrane assembly, nanofiltration membrane component and
Reverse osmosis membrane assembly includes inlet, permeate mouth and concentrate mouth, the hyperfiltration membrane assembly, nanofiltration membrane component and reverse osmosis
Permeate mouth and the inlet of permeable membrane component are sequentially connected in series, the inlet of the hyperfiltration membrane assembly and the cartridge filter
Liquid outlet connection, the permeate mouth of the reverse osmosis membrane assembly connect with clear water reserviors, the hyperfiltration membrane assembly, nanofiltration membrane component
It is connect with the inlet of the cartridge filter with the concentrate mouth of reverse osmosis membrane assembly, the inlet end and an outlet end of all devices
It is equipped with valve.
Further, the sidewall upper of the regulating reservoir and sedimentation basin is both provided with spout hole.
Further, the hyperfiltration membrane assembly is tubular ultra-filtration membrane element, and the nanofiltration membrane component is doughnut nanofiltration
Membrane component.
The step of present invention provides a kind of technique for treating industrial wastewater, this technique include：
(1) measurement of stoste content of beary metal：Survey of the micro stoste to detector for content of heavy metal is extracted in miniature suction pump
It tries in chamber, the heavy metal in stoste is measured, determination data is transmitted in PLC control system；
(2) stoste pH value is adjusted：Stoste is pumped into regulating reservoir, adjusting is pumped by the control of static pressure type liquid level sensor
The volume of pond stoste, pH sensor measurement stoste acid-base values, and liquid injection device is adjusted by pH value and adjusts stoste acid-base value, it opens
The first agitating device is opened, so that stoste is adjusted liquid with pH value and is uniformly mixed；
(3) heavy metal ion precipitates：Stoste in regulating reservoir is pumped into sedimentation basin, ultrasonic liquid level sensor control
It is pumped into the volume of the stoste of sedimentation basin, after PLC control system analyzes heavy metal ion content value, control metering pump is pumped into
The content of heavy metal chelating agent, and control the second agitating device and carry out intermittent stirring, heavy metal chelating agent produces after being reacted with stoste
Raw heavy metal ion precipitation, heavy metal ion precipitation are discharged by sedimentation basin lower end, the recycling after filter press；
(4) after precipitation process liquid absorption and elution：By sedimentation basin, treated that stoste is pumped into adsorption tower lower end, warp
After adsorption tower absorption, the liquid of adsorption tower upper end enters in membrane filtration system, and eluent is poured into above adsorption tower, static
After a period of time, heavy metal recovery liquid is flowed into below adsorption tower in heavy metal recovery liquid case, carries out the heavy metal of next step
Recycling；
(5) membrane filtration：The liquid of adsorption tower upper end successively pass through cartridge filter, hyperfiltration membrane assembly, nanofiltration membrane component and
It after reverse osmosis membrane assembly, is entered in clear water reserviors by the permeate mouth of reverse osmosis membrane assembly, in hyperfiltration membrane assembly, NF membrane group
The concentrate that the concentrate mouth of part and reverse osmosis membrane assembly generates, which comes back to, carries out circulating filtration in membrane filtration system, after cycle
Concentrate enter evaporation in evaporator.
Further, in step (2), the pH value for adjusting stoste is maintained at pH value 4-6.
Further, in step (3), the intermittent stirring time of the second agitating device is 8min-10min.
Further, in step (3), the heavy metal chelating agent be aminodithioformic acid type chelating resin derivative or
Xanthic acid esters.
Compared with prior art, the present invention has the advantage that is with advantageous effect：
1, after waste water stoste is adjusted pH value by the present invention, heavy metal chelating agent is directly added in sedimentation basin, heavy metal is caught
Agent is caught to react with waste water stoste, heavy metal chelating agent be aminodithioformic acid type chelating resin derivative or xanthic acid esters,
Most heavy metal precipitation in waste water stoste can be made to come out, especially the removal to nickel metal, and be contained by heavy metal
Amount detector is connected by PLC control system with metering pump, and effectively control is pumped into the content of heavy metal chelating agent, passes through second
Agitating device intermittent stirring, makes heavy metal chelating agent be sufficiently mixed precipitation with waste water stoste, and heavy metal removing rate is high；
2, the supernatant in sedimentation basin is pumped into adsorption tower by the present invention, by hydrogel adsorbent to residual in supernatant
The heavy metal stayed is further adsorbed, and thoroughly removes the heavy metal in waste water, and will be in hydrogel adsorbent by eluent
Heavy metal be eluted out, heavy metal is recycled, heavy metals removal step is simple, and application apparatus is few, reduce equipment
Floor space；
3, the liquid after the present invention adsorbs adsorption tower is pumped into membrane filtration system, and membrane filtration system filters security personnel
Device, hyperfiltration membrane assembly, nanofiltration membrane component and reverse osmosis membrane assembly are connected in series with each other, and do not need middle transition equipment, and equipment connects
It connects simply, floor space is small, and the liquid after being adsorbed to adsorption tower is further filtered, and the liquid of filtering emission complies fully with
National heavy metal wastewater thereby discharge standard.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of industrial wastewater treatment device of the present invention.
Fig. 2 is a kind of technique for treating industrial wastewater flow chart of the present invention.
Fig. 3 is heavy metal concentration variation and heavy metal concentration in traditional equipment in a kind of industrial wastewater treatment device of the present invention
The curve comparison figure of variation.
In figure：1- former ponds；2- regulating reservoirs；3- sedimentation basins；4- adsorption towers；5-PLC control systems；6- content of beary metal is examined
Survey instrument；7- liquid suction pipes；The miniature suction pumps of 8-；The first agitating devices of 9-；10-pH sensors；11- static pressure type liquid level sensors；12-
PH value adjusts liquid injection device；The second agitating devices of 13-；14- ultrasonic liquid level sensors；15- heavy metal chelating agent casees；16-
Metering pump；17- filter presses；18- hydrogel adsorbents；19- elutes liquid case；20- heavy metal recovery liquid cases；21- cartridge filters；
22- hyperfiltration membrane assemblies；23- nanofiltration membrane components；24- reverse osmosis membrane assemblies；25- clear water reserviors；26- valves；27- spout holes.
Specific implementation mode
It elaborates below in conjunction with the accompanying drawings to the specific implementation mode of the present invention.
As depicted in figs. 1 and 2, heavy metal wastewater thereby enters former pond 1 in water inlet pipe by valve 26, when in former pond 1
Wastewater flow rate when reaching certain volume, stoste is pumped into regulating reservoir 2 by the pump housing, static pressure type liquid is installed in regulating reservoir 2
Level sensor 11 is used to control to adjust the height of liquid in pond 2, prevents liquid from overflowing, while the overflow of 2 sidewall upper of regulating reservoir
Mouth 27, which also reaches, prevents liquid the problem of upper end is overflowed, and pH sensors 10 are installed in regulating reservoir 2, detects in regulating reservoir 2
The acid-base value of stoste, the pH value adjusting liquid of 2 top of regulating reservoir enters in regulating reservoir 2 is adjusted to pH value 4-6 to stoste acid-base value
Between, this acidity value meets the reaction condition of heavy metal chelating agent, while meeting hydrogel adsorbent 18 in later stage adsorption tower
Optimal adsorption acidity value does not need other acidity adjustment equipment, and equipment is simple, and will be in regulating reservoir 2 by the first agitating device 9
Stoste stir evenly, the stoste for regulating acid-base value is pumped into sedimentation basin 3, to prevent the precipitation generated in sedimentation basin 3 resistance
Hinder the measurement of contact liquid level sensor, therefore it is heavy to use the contactless control of ultrasonic liquid level sensor 14 stoste to be pumped into
Volume in shallow lake pond 3, measures the content of heavy metal in stoste in former pond 1 by detector for content of heavy metal 6, and passes through
The control metering pump 16 of PLC control system 5 is pumped into flow, to control the amount that sedimentation basin 3 is added in heavy metal chelating agent, PLC controls
Stirring was primary per 8-10 minutes for second agitating device of the control of system 5 processed 13, and mixing time is set as 5 minutes, makes heavy metal chelating
Agent is sufficiently mixed with stoste, promotes to generate heavy metal ion precipitation in sedimentation basin 3, heavy metal ion precipitation passes through under sedimentation basin 3
End is discharged, the recycling after filter press 17, and the supernatant in sedimentation basin 3 enters in the lower end of adsorption tower 4, in adsorption tower
4 upper end exits into membrane filtration system, and the eluent in the elution liquid case 19 of 3 top of adsorption tower is poured into adsorption tower
In 4, after static a period of time, the heavy metal liquid eluted is flowed out in the lower end of adsorption tower 4, enters heavy metal recovery liquid case
In 20, the heavy metal recovery of next step is carried out, the liquid of 4 upper end of adsorption tower passes through cartridge filter 21, hyperfiltration membrane assembly successively
22, after nanofiltration membrane component 23 and reverse osmosis membrane assembly 24, clear water reserviors 25 are entered by the permeate mouth of reverse osmosis membrane assembly 24
In, into the liquid in clear water reserviors 25 also direct emission or re-using, in hyperfiltration membrane assembly 22, nanofiltration membrane component 23 and reverse osmosis
The concentrate that the concentrate mouth of permeable membrane component 24 generates, which comes back to, carries out circulating filtration in membrane filtration system, the concentration after cycle
Liquid enters evaporation in evaporator.
As shown in figure 3, the industrial wastewater treatment device of the present invention and traditional heavy metal wastewater treatment apparatus are carried out pair
Than this experiment is pilot plant test, and identical waste water stoste is respectively adopted at processing equipment and the traditional heavy metal of the present invention
Reason equipment is handled, the results showed that, in same time, the content of beary metal in the waste water that the present invention is handled, which is consistently lower than, to be passed
Content of beary metal in the waste water of equipment of uniting processing, meanwhile, content of beary metal survey is carried out to the relief liquor after the completion of wastewater treatment
It is fixed, the results showed that, treated that discharge is useless far below traditional equipment for content of beary metal in the present invention treated waste discharge
Content of beary metal in water.
The present invention is few to the equipment of heavy metal containing wastewater treatment, and floor space is small, and heavy metal removing rate is high, makes suitable for promoting
With.
One embodiment of the present invention has been described in detail above, but the content be only the present invention preferable implementation
Example should not be construed as limiting the practical range of the present invention.It is all according to all the changes and improvements made by the present patent application range
Deng should all still fall within the scope of the patent of the present invention.
Claims (7)
1. a kind of industrial wastewater treatment device, it is characterised in that：Sequence includes former pond, regulating reservoir, sedimentation basin, absorption successively
Tower, membrane filtration system and PLC control system,
Detector for content of heavy metal, the test chamber of the detector for content of heavy metal and the raw water are equipped with above the former pond
Pond is connected by liquid suction pipe, and the liquid suction pipe is equipped with miniature suction pump, and the detector for content of heavy metal is controlled with the PLC
System is electrically connected, and heavy metal in waste water content value is transmitted in PLC control system by the detector for content of heavy metal；
The first agitating device is equipped in the regulating reservoir, the regulating reservoir lower end is equipped with pH sensors and static pressure type level sensing
Device, the regulating reservoir top are connected with the pH value for adjusting liquid acid-base value in the regulating reservoir and adjust liquid injection device；
The second agitating device is equipped in the sedimentation basin, second agitating device is electrically connected with the PLC control system, described
PLC control system controls the second agitating device intermittent stirring, and ultrasonic liquid level sensor is equipped with above the sedimentation basin, described heavy
Heavy metal chelating agent case is connected above the pond of shallow lake, the heavy metal chelating agent in the heavy metal chelating agent case is pumped by metering pump
Enter into the sedimentation basin, the metering pump is electrically connected with the PLC control system, and heavy metal ion is generated in the sedimentation basin
Precipitation, the heavy metal ion precipitation are discharged by the sedimentation basin lower end, the recycling after filter press；
It is filled with hydrogel adsorbent in the adsorption tower, elution liquid case, the adsorption tower lower end are equipped with above the adsorption tower
It is connected with heavy metal recovery liquid case；
Membrane filtration system sequence includes cartridge filter, hyperfiltration membrane assembly, nanofiltration membrane component and reverse osmosis membrane assembly successively,
The hyperfiltration membrane assembly, nanofiltration membrane component and reverse osmosis membrane assembly include inlet, permeate mouth and concentrate mouth, described
The permeate mouth and inlet of hyperfiltration membrane assembly, nanofiltration membrane component and reverse osmosis membrane assembly are sequentially connected in series, the ultrafiltration membrane
The inlet of component is connect with the liquid outlet of the cartridge filter, and permeate mouth and the clear water reserviors of the reverse osmosis membrane assembly connect
It connects, the inlet of the concentrate mouth and the cartridge filter of the hyperfiltration membrane assembly, nanofiltration membrane component and reverse osmosis membrane assembly
Connection, the inlet end and an outlet end of all devices are equipped with valve.
2. a kind of industrial wastewater treatment device according to claim 1, it is characterised in that：The regulating reservoir and sedimentation basin
Sidewall upper is both provided with spout hole.
3. a kind of industrial wastewater treatment device according to claim 1, it is characterised in that：The hyperfiltration membrane assembly is tubular type
Ultrafiltration membrane elements, the nanofiltration membrane component are hollow fiber nanofiltration membrane element.
4. a kind of technique for treating industrial wastewater, it is characterised in that：The step of this technique includes：
(1) measurement of stoste content of beary metal：Miniature suction pump extracts micro stoste to the test chamber of detector for content of heavy metal
In, the heavy metal in stoste is measured, determination data is transmitted in PLC control system；
(2) stoste pH value is adjusted：Stoste is pumped into regulating reservoir, regulating reservoir original is pumped by the control of static pressure type liquid level sensor
The volume of liquid, pH sensor measurement stoste acid-base values, and liquid injection device is adjusted by pH value and adjusts stoste acid-base value, open the
One agitating device makes stoste adjust liquid with pH value and is uniformly mixed；
(3) heavy metal ion precipitates：Stoste in regulating reservoir is pumped into sedimentation basin, ultrasonic liquid level sensor control is pumped into
The volume of the stoste of sedimentation basin, after PLC control system analyzes heavy metal ion content value, control metering pump is pumped into a huge sum of money
Belong to the content of agent for capturing, and control the second agitating device and carry out intermittent stirring, heavy metal chelating agent generates weight after being reacted with stoste
Precipitation by metallic ion, heavy metal ion precipitation are discharged by sedimentation basin lower end, the recycling after filter press；
(4) after precipitation process liquid absorption and elution：By sedimentation basin, treated that stoste is pumped into adsorption tower lower end, through absorption
After tower absorption, the liquid of adsorption tower upper end enters in membrane filtration system, and eluent is poured into above adsorption tower, static one section
After time, heavy metal recovery liquid is flowed into below adsorption tower in heavy metal recovery liquid case, carries out the heavy metal recovery of next step；
(5) membrane filtration：The liquid of adsorption tower upper end passes through cartridge filter, hyperfiltration membrane assembly, nanofiltration membrane component and reverse osmosis successively
After permeable membrane component, entered in clear water reserviors by the permeate mouth of reverse osmosis membrane assembly, hyperfiltration membrane assembly, nanofiltration membrane component and
The concentrate that the concentrate mouth of reverse osmosis membrane assembly generates, which comes back to, carries out circulating filtration in membrane filtration system, dense after cycle
Contracting liquid enters evaporation in evaporator.
5. a kind of technique for treating industrial wastewater according to claim 4, it is characterised in that：In step (2), stoste is adjusted
PH value is maintained at pH value 4-6.
6. a kind of technique for treating industrial wastewater according to claim 4, it is characterised in that：In step (3), the second stirring dress
The intermittent stirring time set is 8min-10min.
7. a kind of technique for treating industrial wastewater according to claim 4, it is characterised in that：In step (3), the heavy metal
Agent for capturing is aminodithioformic acid type chelating resin derivative or xanthic acid esters.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109231676A (en) * | 2018-10-15 | 2019-01-18 | 佛山市思特四通化工有限公司 | A kind of chemical industry heavy-metal waste water treatment device and its operating method |
| CN112358135A (en) * | 2020-11-16 | 2021-02-12 | 神美科技有限公司 | Industrial water treatment equipment and process |
| CN112607934A (en) * | 2020-12-21 | 2021-04-06 | 兰州资源环境职业技术学院 | Chemistry experiment room effluent disposal system |
| CN112850870A (en) * | 2021-03-02 | 2021-05-28 | 清华大学 | Heavy metal interference elimination device matched with analysis and detection instrument |
| CN113336366A (en) * | 2021-07-06 | 2021-09-03 | 毛建敏 | Industrial waste water heavy metal detection and separation device |
| CN113800683A (en) * | 2021-10-09 | 2021-12-17 | 深圳市蓝小天实业有限公司 | Nanometer adsorption type heavy metal wastewater treatment device |
| CN117819771A (en) * | 2024-01-29 | 2024-04-05 | 东晟环保科技集团(安徽)股份有限公司 | A recycling process for waste acid from lead-acid battery disassembly |
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Application publication date: 20180914 |