CN106007069A - Waste denitration catalyst regeneration zero-discharge wastewater treatment system - Google Patents
Waste denitration catalyst regeneration zero-discharge wastewater treatment system Download PDFInfo
- Publication number
- CN106007069A CN106007069A CN201610499401.5A CN201610499401A CN106007069A CN 106007069 A CN106007069 A CN 106007069A CN 201610499401 A CN201610499401 A CN 201610499401A CN 106007069 A CN106007069 A CN 106007069A
- Authority
- CN
- China
- Prior art keywords
- waste
- water
- wastewater
- tank
- catalyst regeneration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
-
- 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
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- 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
- C02F2303/14—Maintenance of water treatment installations
Abstract
The invention discloses a waste denitration catalyst regeneration zero-discharge wastewater treatment system. A treatment method comprises the following steps: collecting the production wastewater and together feeding into a regulation tank for regulating the water quantity and water quality; lifting the wastewater regulated in the regulation tank into a first-level coagulative precipitation tank by a pump, and adding lime milk, PAM, PAC and a heavy metal capture agent; adding Fe<3+> into the wastewater, then adding alkali to regulate the pH value to 8.5-9.0, and performing blast oxidation for 20-30min; adding a reducing agent into the wastewater; after 10-20min of reaction, adding lime milk; introducing the wastewater into a second-level coagulative precipitation tank, wherein the wastewater is further precipitated through coagulation; enabling the wastewater treated by the second-level coagulative precipitation tank to flow into a middle water tank, and lifting into a filter tank by a pump for filtration; and then, enabling the wastewater to flow into a clean water tank and reusing to a production line. The system disclosed by the invention realizes a good wastewater treatment effect, the wastewater is treated before recycling, and thus a zero-discharge wastewater system is realized.
Description
Technical field
The present invention relates to technical field of waste water processing, particularly relate to a kind of waste and old denitrating catalyst
Regeneration zero discharge waste-water processing system.
Background technology
Denitrating catalyst can inactivate after using a period of time, and inactivation can be divided into physics inactivation and chemistry
Inactivation.Typical SCR catalyst chemical inactivation is mainly alkali metal, alkaline-earth metal and As
Etc. the catalyst poisoning caused, physics inactivation is primarily referred to as high temperature sintering, weares and teares and block and draw
The catalyst activity risen destroys.Being directed to the regeneration of the chemical inactivation of catalyst, employing has can
The effects such as selective the seizure arsenic on dead catalyst surface, hydrargyrum, calcium, beryllium, barium, magnesium, ferrum
Weight heavy metal chelating agent HMCA-1, can effectively trap and remove the weight sticking to dead catalyst surface
Metal, its process through spray rinsing, ultrasonic cleaning, acid soak, activity impregnating technique,
All produce the aqueous solution that can pollute, it is therefore desirable to waste water is suitably processed, to reach
Discharge standard to national regulation.
Traditional chemical deposition waste water processes the discharge standard that can only achieve national regulation, but
The most still with the presence of micro heavy, it is present in water body with heavy metal compound state, directly
Discharge, finally by toy or plant absorption, accumulation, is finally transferred to the high-end mankind of food chain；
And discharge water without advanced treating cannot reuse, cause the waste of water resource.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of waste and old denitration catalyst
Agent regeneration zero discharge waste-water processing system.This system good waste water treatment effect, waste water returns after processing
Receive and utilize, it is achieved that zero discharge waste-water.
The technical solution adopted in the present invention is: in project operation production process, raw
Produce waste water and mainly include the water quality characteristics of the materials such as flyash, vanadium, arsenic, alkali metal compound,
In conjunction with conventional actual engineering design experience, use " chemical flocculation precipitation method+filtering technique "
Process for producing waste water.
A kind of waste and old denitrating catalyst regeneration zero discharge waste-water processing system, comprises the following steps:
(1) unified entrance regulating reservoir after Waste Water Centralized is collected will be produced, carry out the water yield, water quality
Regulation；
(2) it is adjusted the waste water after the regulation of pond and is lifted into one-level coagulative precipitation tank through pump, first
By Fe3+Join in waste water, then add alkali regulation pH value be 8.5～9.0, air blast oxidation 20～
30min；Reducing agent is joined in waste water, after reaction 10～20min；Again feeding lime breast,
PAM, PAC, heavy metal chelating agent；
(3) waste water is passed through two-stage coagulation sedimentation tank, and by coagulation, waste water sinks further
Form sediment；
(4) waste water after two-stage coagulation sedimentation tank processes flows to intermediate pool, warp the most again
After pump is lifted into filtering tank filtration, flows into clear water reserviors, be back to production line.
Preferably, the mud of described one-level coagulative precipitation tank precipitation collapses into sludge concentration tank through pump,
Mud cake outward transport is become to process through pressure filter filter pressing after concentration；The filtrate of pressure filter filter pressing is back to regulation
Pond carries out after-treatment.
Preferably, the sludge pump of described two-stage coagulation sedimentation tank precipitation collapses into sludge concentration tank, dense
Mud cake outward transport is become to process through pressure filter filter pressing after contracting；The filtrate of pressure filter filter pressing is back to regulation
Pond, carries out after-treatment.
Preferably, the filtrate concentrating and producing in pressure-filtering process is back to regulating reservoir, carries out secondary
Process.
Preferably, the water in inflow clear water reserviors, in 1-3h is back to filtering tank, carries out anti-
Clean.
Preferably, backwashing wastewater enters regulating reservoir through pipeline again, carries out after-treatment.
Preferably, before water inlet, the pH value of regulating reservoir is 3～4.
Preferably, reducing agent is Fe2+。
Preferably, described two-stage coagulation sedimentation tank adds PAM, PAC, heavy metal chelating agent.
The present invention is unified entrance regulating reservoir after passing through to produce Waste Water Centralized collection, regulating pondage,
Water quality, provides stable service condition for sewage disposal system, makes water treatment system after entrance
Sewage quality equalizes.
The present invention is lifted into a coagulation by the waste water after being adjusted pond regulation through pump and sinks
Pond, shallow lake, wherein medicament and the waste water such as feeding lime breast, PAM, PAC, heavy metal chelating agent
Middle float and vanadium, arsenic generation materialization reduction reaction, thus go the removal of impurity to alleviate post processing load；
The chemical method arsenic removal of the present invention processes: utilize coprecipitation, by Fe3+Add containing heavy metal
In ion waste water, then adding alkali regulation pH value is 8.5～9.0, and air blast aoxidizes 20～30 minutes
After can generate coffee color magnetic ferrites slag.Its principles of chemistry are as follows:
2FeCl3+3Ca(OH)2→2Fe(OH)3↓+3CaCl2
As pH ＞ 10, arsenate, arsenous anion are replaced with hydroxyl, only make a part of arsenic
Soluble in water, therefore endpoint pH is preferably controlled in less than 10, owing to hydrated ferric oxide. adsorbs five
The pH value range of valency arsenic is much bigger compared with trivalent arsenic, and required ferrum arsenic is smaller, therefore in cohesion
Before process, arsenite is become arsenate, the effect of arsenic removal can be improved.
The chemical method of the present invention processes except vanadium: directly adds reducing agent in waste water, now occurs
Following dominant response: Fe2+Produce ferric vandate precipitation with vanadate, also have part V5+It is reduced
Become V3+, Fe2+It is oxidized to Fe3+, Fe3+XFe is produced with vanadate2O3·yV2O5·2H2O
Precipitation etc., then feeding lime Ruzhong and free acid, make the vanadium ion of remnants produce calcium vanadate and sink
Form sediment, make Fe2+、Fe3+、V3+Generation hydroxide precipitates, and the water outlet after this method processes contains vanadium not
More than 2mg/L.
The present invention by being passed through second coagulation sedimentation tank by waste water, and by coagulation, waste water obtains
To precipitation further, waste water after treatment flows automatically to intermediate pool, promotes through pump the most again
Entrance filtering tank filters, and adsorbs the SS in waste water, vanadium, arsenic further, it is ensured that water quality reaches
To reuse standard, after filtration, clear water flows into clear water reserviors, is back to production line, or periodically by clear water
Filtering tank is squeezed in pond, and filtering tank is carried out backwash.Backwashing wastewater again enters through pipeline and adjusts
Joint pond.The mud produced in technique collapses into sludge concentration tank through pump, through pressure filter filter pressing after concentration
Becoming mud cake outward transport to process, the filtrate concentrating and producing in pressure-filtering process is back to regulating reservoir and again enters
Enter to process technique.
It is an advantage of the current invention that: waste water aqueous concentration after treatment is relatively low, meets reuse standard
After, be back to produce high pressure cleaning showers, bubbling rinsing process and ground flushing water, not outside
Row, project waste water peripheral ground water environmental impact is less.
Accompanying drawing explanation
Fig. 1 is sewage treatment technology process figure of the present invention.
Specific implementation method
The present invention is further described below in conjunction with the accompanying drawings.
As described in Figure 1, production wastewater treatment brief description of the process is as follows:
(1) the unified regulating reservoir that enters after Waste Water Centralized collection being produced, regulating pondage, water quality,
There is provided stable service condition for sewage disposal system, make the sewage water of water treatment system after entrance
Matter equalizes；
Preferably, before water inlet, the pH value of regulating reservoir is 3～4.
(2) it is adjusted the waste water after the regulation of pond and is lifted into a coagulative precipitation tank through pump.
Chemical method arsenic removal processes: utilize coprecipitation, by Fe3+Join and give up containing heavy metal ion
In water, then adding alkali regulation pH value is 8.50～9.0, and air blast can after aoxidizing 20～30 minutes
Generate coffee-like magnetic ferrites slag.Its principles of chemistry are as follows:
2FeCl3+3Ca(OH)2→2Fe(OH)3↓+3CaCl2
As pH ＞ 10, arsenate, arsenous anion are replaced with hydroxyl, only make a part of arsenic
Soluble in water, therefore endpoint pH is preferably controlled in less than 10, owing to hydrated ferric oxide. adsorbs five
The pH value range of valency arsenic is much bigger compared with trivalent arsenic, and required ferrum arsenic is smaller, therefore in cohesion
Before process, arsenite is become arsenate, the effect of arsenic removal can be improved.
Chemical method processes except vanadium: connects and adds reducing agent in waste water, now occurs following main anti-
Should: 2Fe2+Produce ferric vandate precipitation with vanadate, also have part V5+It is reduced into V3+, Fe2+
It is oxidized to Fe3+, Fe3+XFe is produced with vanadate2O3·yV2O5·2H2O precipitation etc., so
Rear feeding lime Ruzhong and free acid, make the vanadium ion of remnants produce calcium vanadate precipitation, make Fe2+、
Fe3+、V3+Generation hydroxide precipitates, and the water outlet after this method processes is not more than 2mg/L containing vanadium.
The medicament such as feeding lime breast, PAM, PAC, heavy metal chelating agent wherein, in order to wad a quilt with cotton
Solidifying float and and Cu2+、Cd2+、Hg2+、Pb2+、Mn2+、Ni2+、Zn2+、Cr3+Deng
Various heavy metal ion carry out chemical reaction, thus go the removal of impurity to alleviate post processing load.
(3) waste water is passed through second coagulation sedimentation tank, two-stage coagulation sedimentation tank add PAM, PAC,
Heavy metal chelating agent.By coagulation, waste water obtains further precipitation process, through processing
After waste water flow automatically to intermediate pool, the most again through pump be lifted into filtering tank filter, to waste water
In SS, vanadium, arsenic adsorbs further, it is ensured that water quality reaches reuse standard, clear water after filtration
Flow into clear water reserviors, be back to production line, every 1-3h, clear water reserviors squeezed into filtering tank, to mistake
Filter tank carries out backwash.Backwashing wastewater enters regulating reservoir through pipeline again.Technique produces
Mud collapses into sludge concentration tank through pump, becomes mud cake outward transport to process through pressure filter filter pressing after concentration, dense
The filtrate produced in contracting and pressure-filtering process is back to regulating reservoir and is again introduced into processing technique.
Testing result shows:
Table 1 Sewage Disposal treatment effeciency at different levels table
Table 2 Sewage Disposal water treatment effect table
The foregoing is only presently preferred embodiments of the present invention, not in order to limit this
Bright, all any amendment, equivalents made within the spirit and principles in the present invention and changing
Enter, should be included within the scope of the present invention.
Claims (9)
1. a waste and old denitrating catalyst regeneration zero discharge waste-water processing system, it is characterised in that include following
Step:
(1) unified entrance regulating reservoir after Waste Water Centralized is collected will be produced, carry out the regulation of the water yield, water quality；
(2) it is adjusted the waste water after the regulation of pond and is lifted into one-level coagulative precipitation tank through pump, first by Fe3+Add
In waste water, then adding alkali regulation pH value is 8.5～9.0, air blast oxidation 20～30min；Reducing agent is added
Enter in waste water, after reaction 10～20min；Feeding lime breast, PAM, PAC, heavy metal chelating agent again；
(3) waste water is passed through two-stage coagulation sedimentation tank, and by coagulation, waste water precipitates further；
(4) waste water after two-stage coagulation sedimentation tank processes flows to intermediate pool, is lifted into through pump the most again
After filtering tank filters, flow into clear water reserviors, be back to production line.
One the most according to claim 1 waste and old denitrating catalyst regeneration zero discharge waste-water processing system,
It is characterized in that, the mud of described one-level coagulative precipitation tank precipitation collapses into sludge concentration tank through pump, warp after concentration
Pressure filter filter pressing becomes mud cake outward transport to process；The filtrate of pressure filter filter pressing is back to regulating reservoir, carries out after-treatment.
One the most according to claim 1 waste and old denitrating catalyst regeneration zero discharge waste-water processing system,
It is characterized in that, the sludge pump of described two-stage coagulation sedimentation tank precipitation collapses into sludge concentration tank, through pressure after concentration
Filter filter pressing becomes mud cake outward transport to process；The filtrate of pressure filter filter pressing is back to regulating reservoir, carries out after-treatment.
4. regenerate at zero discharge waste-water according to the waste and old denitrating catalyst of one described in any one of claim 2-3
Reason system, it is characterised in that the filtrate concentrating and producing in pressure-filtering process is back to regulating reservoir, carries out secondary
Process.
One the most according to claim 1 waste and old denitrating catalyst regeneration zero discharge waste-water processing system,
It is characterized in that, flow into the water in clear water reserviors in 1-3h is back to filtering tank, counter clean.
One the most according to claim 5 waste and old denitrating catalyst regeneration zero discharge waste-water processing system,
It is characterized in that, backwashing wastewater enters regulating reservoir through pipeline again, carries out after-treatment.
One the most according to claim 1 waste and old denitrating catalyst regeneration zero discharge waste-water processing system,
It is characterized in that, before water inlet, the pH value of regulating reservoir is 3～4.
One the most according to claim 1 waste and old denitrating catalyst regeneration zero discharge waste-water processing system,
It is characterized in that, reducing agent is Fe2+。
One the most according to claim 1 waste and old denitrating catalyst regeneration zero discharge waste-water processing system,
It is characterized in that, described two-stage coagulation sedimentation tank adds PAM, PAC, heavy metal chelating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610499401.5A CN106007069A (en) | 2016-06-27 | 2016-06-27 | Waste denitration catalyst regeneration zero-discharge wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610499401.5A CN106007069A (en) | 2016-06-27 | 2016-06-27 | Waste denitration catalyst regeneration zero-discharge wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106007069A true CN106007069A (en) | 2016-10-12 |
Family
ID=57104554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610499401.5A Pending CN106007069A (en) | 2016-06-27 | 2016-06-27 | Waste denitration catalyst regeneration zero-discharge wastewater treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106007069A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517575A (en) * | 2016-11-07 | 2017-03-22 | 苏州西热节能环保技术有限公司 | Separate collection, reuse and treatment method for SCR denitration catalyst cleaning wastewater |
| CN110655228A (en) * | 2019-08-31 | 2020-01-07 | 广东韶钢松山股份有限公司 | Wastewater treatment process and system |
| CN111977872A (en) * | 2020-08-26 | 2020-11-24 | 大唐环境产业集团股份有限公司 | System and method for treating high-dust high-vanadium wastewater regenerated by denitration catalyst and recycling reclaimed water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863591A (en) * | 2010-06-17 | 2010-10-20 | 重庆远达水务有限公司 | Technique for treating wastewater in production of denitration catalyst |
| CN102471107A (en) * | 2010-04-28 | 2012-05-23 | 三菱重工业株式会社 | Wastewater treatment method |
| CN102826677A (en) * | 2012-06-15 | 2012-12-19 | 湖南大学 | Full-cycling technology for vanadium smelting wastewater |
| CN103043812A (en) * | 2011-10-13 | 2013-04-17 | 中国科学院过程工程研究所 | Advanced treatment method for arsenic-containing wastewater |
| CN103663779A (en) * | 2013-11-19 | 2014-03-26 | 苏州丹百利电子材料有限公司 | Method for safely and efficiently treating arsenic waste water generated from arsenic hydride production |
-
2016
- 2016-06-27 CN CN201610499401.5A patent/CN106007069A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102471107A (en) * | 2010-04-28 | 2012-05-23 | 三菱重工业株式会社 | Wastewater treatment method |
| CN101863591A (en) * | 2010-06-17 | 2010-10-20 | 重庆远达水务有限公司 | Technique for treating wastewater in production of denitration catalyst |
| CN103043812A (en) * | 2011-10-13 | 2013-04-17 | 中国科学院过程工程研究所 | Advanced treatment method for arsenic-containing wastewater |
| CN102826677A (en) * | 2012-06-15 | 2012-12-19 | 湖南大学 | Full-cycling technology for vanadium smelting wastewater |
| CN103663779A (en) * | 2013-11-19 | 2014-03-26 | 苏州丹百利电子材料有限公司 | Method for safely and efficiently treating arsenic waste water generated from arsenic hydride production |
Non-Patent Citations (1)
| Title |
|---|
| 李永峰等: "《环境生物技术：典型厌氧环境微生物过程》", 31 August 2014, 哈尔滨工业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517575A (en) * | 2016-11-07 | 2017-03-22 | 苏州西热节能环保技术有限公司 | Separate collection, reuse and treatment method for SCR denitration catalyst cleaning wastewater |
| CN106517575B (en) * | 2016-11-07 | 2022-08-30 | 苏州西热节能环保技术有限公司 | Classified collection, recycling and treatment method for SCR denitration catalyst cleaning wastewater |
| CN110655228A (en) * | 2019-08-31 | 2020-01-07 | 广东韶钢松山股份有限公司 | Wastewater treatment process and system |
| CN111977872A (en) * | 2020-08-26 | 2020-11-24 | 大唐环境产业集团股份有限公司 | System and method for treating high-dust high-vanadium wastewater regenerated by denitration catalyst and recycling reclaimed water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109879477B (en) | Arsenic-containing wastewater treatment method | |
| CN100450592C (en) | Metal smelting factory sewage reclaiming method based on membrane filtering technique | |
| CN103466843A (en) | Technology and device for treating heavy metal ion wastewater | |
| CN102190392B (en) | RO dense water standard discharge technology in reclaimed water reuse | |
| CN109019959A (en) | A kind of processing unit of strong complex state heavy metal wastewater thereby and its discharge and reuse technology | |
| CN103951114B (en) | A kind of heavy metal wastewater thereby tertiary treatment and deep purifying reuse technology | |
| CN105439326A (en) | Treatment method of chemical nickel-plating wastewater | |
| CN108101299A (en) | A kind of high vanadium SCR denitration regenerative wastewater processing method | |
| CN106007069A (en) | Waste denitration catalyst regeneration zero-discharge wastewater treatment system | |
| CN202542982U (en) | Vanadium pentoxide waste water treating and resource recycling device | |
| CN106186423A (en) | A kind of phosphorized waste water intermediate water reuse system | |
| CN102311183A (en) | Cyanide-containing wastewater treatment method and system | |
| CN107399863B (en) | Combined treatment system and method for boiler chemical cleaning wastewater and air preheater flushing water | |
| CN211056864U (en) | Recycling equipment for treating nickel-containing wastewater | |
| CN103043834A (en) | Rear earth smelting wastewater treatment process | |
| JP2006224023A (en) | Method and apparatus for treating heavy metal-containing waste water | |
| CN208561983U (en) | A kind of heavy metal waste water treatment system | |
| CN209957614U (en) | Nickel-containing wastewater treatment system | |
| CN203360177U (en) | Arsenical waste water treatment system | |
| CN105753217A (en) | Nickel cyanide-containing wastewater treatment technology | |
| CN211999245U (en) | Arsenic-containing organic wastewater treatment system | |
| CN208776480U (en) | A kind of set treatment device of strong complex state heavy metal wastewater thereby | |
| CN208603898U (en) | A kind of graphite waste water treatment system | |
| CN203498201U (en) | Heavy metal ion wastewater treatment device | |
| CN108046480A (en) | Stainless steel acid cleaning waste water processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |
|
| RJ01 | Rejection of invention patent application after publication |