CN113354050A - Heavy metal wastewater treating agent and wastewater treatment method - Google Patents
Heavy metal wastewater treating agent and wastewater treatment method Download PDFInfo
- Publication number
- CN113354050A CN113354050A CN202110808918.9A CN202110808918A CN113354050A CN 113354050 A CN113354050 A CN 113354050A CN 202110808918 A CN202110808918 A CN 202110808918A CN 113354050 A CN113354050 A CN 113354050A
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- heavy metal
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- wastewater
- metal wastewater
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 114
- 239000002351 wastewater Substances 0.000 title claims abstract description 101
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 70
- 238000001514 detection method Methods 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000001556 precipitation Methods 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 238000000746 purification Methods 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 49
- 239000000463 material Substances 0.000 claims description 22
- 239000002346 layers by function Substances 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- 238000004062 sedimentation Methods 0.000 claims description 10
- 229920001690 polydopamine Polymers 0.000 claims description 9
- 229910052582 BN Inorganic materials 0.000 claims description 8
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 8
- 244000005700 microbiome Species 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229920000858 Cyclodextrin Polymers 0.000 claims description 4
- 239000004964 aerogel Substances 0.000 claims description 4
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 claims description 4
- 239000012990 dithiocarbamate Substances 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002244 precipitate Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
-
- 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
- C02F2209/11—Turbidity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses a heavy metal wastewater treatment agent and a wastewater treatment method, and relates to the technical field of heavy metal wastewater treatment. The invention comprises the steps of early preparation, separation, purification, detection and discharge, wherein the early preparation comprises the following steps: the method comprises the following steps: preparing a proper amount of wastewater treatment agent; step two: and placing the wastewater treatment agent in a sterilized filter flask. The invention can comprehensively precipitate and filter fine suspended matters in the heavy metal wastewater by setting separation and purification steps, improves the precipitation separation effect of the heavy metal wastewater, further can enable the heavy metal wastewater to reach the discharge standard, and improves the efficiency and quality of heavy metal wastewater treatment.
Description
Technical Field
The invention belongs to the technical field of heavy metal wastewater treatment, and particularly relates to a heavy metal wastewater treatment agent and a wastewater treatment method.
Background
Heavy metal wastewater treatment refers to a process of purifying heavy metals contained in sewage to meet the water quality requirement of draining a certain water body or reusing the water body, however, the existing heavy metal wastewater treatment method has certain defects when in use, the existing heavy metal wastewater treatment method has the phenomenon of incomplete precipitation of the heavy metal wastewater when in use, so that suspended matters in the heavy metal wastewater cannot be completely removed, and meanwhile, an adsorption material has a single function when adsorbing the heavy metal wastewater and cannot adsorb various heavy metal ions, so that the heavy metal wastewater treatment agent and the wastewater treatment method are improved.
Disclosure of Invention
The invention aims to provide a heavy metal wastewater treating agent and a wastewater treating method, which aim to solve the existing problems: the existing heavy metal wastewater treatment method has the phenomenon of incomplete precipitation of heavy metal wastewater when in use, so that suspended matters in the heavy metal wastewater cannot be completely removed, and meanwhile, the adsorption material has single function when adsorbing the heavy metal wastewater, and cannot adsorb various heavy metal ions.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a heavy metal wastewater treating agent and a wastewater treating method, which comprises the following steps of early preparation, separation, purification, detection and discharge, wherein the early preparation comprises the following steps:
the method comprises the following steps: preparing a proper amount of wastewater treatment agent;
step two: placing the wastewater treatment agent in a sterilized filter flask, and filtering the wastewater treatment agent;
step three: and after filtering, placing the filter in a room for later use.
Further, the separating comprises the steps of:
the method comprises the following steps: detecting the pH value of the heavy metal wastewater, and then adjusting the pH value of the heavy metal wastewater to be neutral;
step two: placing half of the filtered wastewater treatment agent in the heavy metal wastewater;
step three: placing the adsorbing material in the heavy metal wastewater;
step four: fully and uniformly stirring the wastewater treatment agent and the heavy metal wastewater;
step five: stirring for 30-40 min, and standing the wastewater treatment agent and the heavy metal wastewater for 25-30 min;
step six: and placing the other half of the wastewater treatment agent in the heavy metal wastewater, and then stirring again for 40-50 min.
Further, the purification comprises the steps of:
the method comprises the following steps: placing the separated heavy metal wastewater in a sedimentation tank, and simultaneously placing aerobic microorganisms in the sedimentation tank;
step two: precipitating in a precipitation tank, filtering, and removing fine suspended matters for 1-2 h;
step three: carrying out primary detection on the heavy metal wastewater after precipitation, and if the heavy metal wastewater is qualified, placing the heavy metal wastewater in a detection box for secondary detection;
step four: and if the heavy metal wastewater after precipitation is unqualified in primary detection, continuously adding aerobic microorganisms into the precipitation tank until the primary detection is qualified.
Further, the detecting and discharging comprises the steps of:
the method comprises the following steps: detecting each index of heavy metal content, smell emitted by the wastewater, turbidity of the wastewater and pH value of the heavy metal wastewater in the detection box;
step two: if all indexes of the heavy metal wastewater in the detection box reach the discharge standard, discharging the wastewater;
step three: and if the detection index is unqualified, treating the heavy metal wastewater until the detection index reaches the detection standard.
Further, the wastewater treatment agent contains dithiocarbamate and/or derivatives thereof and cyclodextrin and/or derivatives thereof.
Further, the adsorbing material comprises a substrate layer and a functional layer, wherein the substrate layer is one of graphene oxide, flaky boron nitride and boron nitride aerogel.
Further, the thickness of the functional layer is 7nm-8nm, and the functional layer is a 3-aminopropyltriethoxysilane-modified polydopamine membrane.
Further, the mass ratio of the 3-aminopropyltriethoxysilane to the polydopamine is 1: 2.
the invention has the following beneficial effects:
1. the invention can comprehensively precipitate and filter fine suspended matters in the heavy metal wastewater by setting separation and purification steps, thereby improving the precipitation separation effect of the heavy metal wastewater, further enabling the heavy metal wastewater to reach the discharge standard and improving the efficiency and quality of heavy metal wastewater treatment.
2. According to the invention, the substrate layer and the functional layer of the adsorption material are arranged, so that the 3-aminopropyltriethoxysilane and polydopamine can be polymerized, the adsorption activity of the surface of the adsorption material can be further improved, impurities in heavy metal wastewater can be comprehensively adsorbed, and the purification treatment efficiency of the heavy metal wastewater is improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an overall connection block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-1, the present invention relates to a heavy metal wastewater treatment agent and a wastewater treatment method, comprising the steps of preparing, separating, purifying, detecting and discharging at an early stage, wherein the preparation at the early stage comprises the following steps:
the method comprises the following steps: preparing a proper amount of wastewater treatment agent;
step two: placing the wastewater treatment agent in a sterilized filter flask, and filtering the wastewater treatment agent;
step three: and after filtering, placing the filter in a room for later use.
The separation comprises the following steps:
the method comprises the following steps: detecting the pH value of the heavy metal wastewater, and then adjusting the pH value of the heavy metal wastewater to be neutral;
step two: placing half of the filtered wastewater treatment agent in the heavy metal wastewater;
step three: placing the adsorbing material in the heavy metal wastewater;
step four: fully and uniformly stirring the wastewater treatment agent and the heavy metal wastewater;
step five: stirring for 30-40 min, and standing the wastewater treatment agent and the heavy metal wastewater for 25-30 min;
step six: and placing the other half of the wastewater treatment agent in the heavy metal wastewater, and then stirring again for 40-50 min.
The purification comprises the following steps:
the method comprises the following steps: placing the separated heavy metal wastewater in a sedimentation tank, and simultaneously placing aerobic microorganisms in the sedimentation tank;
step two: precipitating in a precipitation tank, filtering, and removing fine suspended matters for 1-2 h;
step three: carrying out primary detection on the heavy metal wastewater after precipitation, and if the heavy metal wastewater is qualified, placing the heavy metal wastewater in a detection box for secondary detection;
step four: and if the heavy metal wastewater after precipitation is unqualified in primary detection, continuously adding aerobic microorganisms into the precipitation tank until the primary detection is qualified.
The detection and discharge comprises the following steps:
the method comprises the following steps: detecting each index of heavy metal content, smell emitted by the wastewater, turbidity of the wastewater and pH value of the heavy metal wastewater in the detection box;
step two: if all indexes of the heavy metal wastewater in the detection box reach the discharge standard, discharging the wastewater;
step three: and if the detection index is unqualified, treating the heavy metal wastewater until the detection index reaches the detection standard.
The wastewater treatment agent contains dithiocarbamate and/or derivatives thereof and cyclodextrin and/or derivatives thereof, the adsorption material comprises a substrate layer and a functional layer, the substrate layer is one of graphene oxide, flaky boron nitride and boron nitride aerogel, the thickness of the functional layer is 7nm-8nm, the functional layer is a 3-aminopropyltriethoxysilane-modified polydopamine film, and the mass ratio of the 3-aminopropyltriethoxysilane to the polydopamine is 1: 2, the separation and purification steps can comprehensively precipitate and filter fine suspended matters in the heavy metal wastewater, so that the precipitation separation effect on the heavy metal wastewater is improved, the heavy metal wastewater can reach the discharge standard, the efficiency and the quality of heavy metal wastewater treatment are improved, the substrate layer and the functional layer of the adsorption material can polymerize 3-aminopropyltriethoxysilane and polydopamine, so that the adsorption activity on the surface of the adsorption material can be improved, impurities in the heavy metal wastewater can be comprehensively adsorbed, the purification treatment efficiency on the heavy metal wastewater is improved, the adsorption material comprises the functional layer, in the preparation process, the functional layer can form a film, magnetic particles are tightly wrapped, the situation that the magnetic particles are oxidized and lose efficacy in the preparation and application processes is avoided, the hydrophilic performance of the substrate layer of the adsorption material is poor, and the hydrophilic performance of the functional layer is high, both cooperate, promoted the dispersion quality of adsorption material in aqueous and the separation performance of adsorption material from aqueous, adsorption material functional layer and substrate layer all have adsorption efficiency, and between the polydopamine of functional layer and the substrate layer, can form pi bond conjugation, take place the synergism, further promote the adsorption performance of adsorption material, place the waste water treatment agent in the filter flask after the disinfection, can ensure that the waste water treatment agent is not polluted, and then can improve the treatment effeciency to heavy metal waste water.
One specific application of this embodiment is: preparing a proper amount of wastewater treatment agent, placing the wastewater treatment agent in a disinfected filter flask, filtering the wastewater treatment agent, placing the wastewater treatment agent indoors for later use after filtering is finished, wherein the wastewater treatment agent contains dithiocarbamate and/or derivatives thereof as well as cyclodextrin and/or derivatives thereof, detecting the pH value of heavy metal wastewater, adjusting the pH value of the heavy metal wastewater to be neutral, placing half of the filtered wastewater treatment agent in the heavy metal wastewater, placing an adsorption material in the heavy metal wastewater, wherein the adsorption material comprises a substrate layer and a functional layer, the substrate layer is one of graphene oxide, flaky boron nitride and boron nitride aerogel, fully and uniformly stirring the wastewater treatment agent and the heavy metal wastewater for 30-40 min, and then standing the wastewater treatment agent and the heavy metal wastewater for 25-30min, placing the other half of the wastewater treatment agent in the heavy metal wastewater, stirring for 40-50min again, placing the separated heavy metal wastewater in a sedimentation tank, simultaneously placing aerobic microorganisms in the sedimentation tank, precipitating and filtering in the sedimentation tank to remove fine suspended matters, wherein the precipitation time is 1-2h, performing primary detection on the precipitated heavy metal wastewater, placing the heavy metal wastewater in a detection box for secondary detection if the heavy metal wastewater is qualified, continuously adding the aerobic microorganisms in the sedimentation tank until the heavy metal wastewater is qualified by primary detection, then detecting the heavy metal wastewater in the detection box by using the indexes of heavy metal content, smell emitted by the wastewater, turbidity of the wastewater and pH value if the heavy metal wastewater in the detection box is qualified by primary detection, and if the indexes of the heavy metal wastewater in the detection box reach the discharge standard, and discharging the wastewater, and if the detection index is unqualified, treating the heavy metal wastewater until the heavy metal wastewater reaches the detection standard.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A heavy metal wastewater treating agent and a wastewater treating method comprise early preparation, separation, purification, detection and discharge, and are characterized in that: the early preparation comprises the following steps:
the method comprises the following steps: preparing a proper amount of wastewater treatment agent;
step two: placing the wastewater treatment agent in a sterilized filter flask, and filtering the wastewater treatment agent;
step three: and after filtering, placing the filter in a room for later use.
2. The heavy metal wastewater treatment agent and wastewater treatment method according to claim 1, characterized in that: the separation comprises the following steps:
the method comprises the following steps: detecting the pH value of the heavy metal wastewater, and then adjusting the pH value of the heavy metal wastewater to be neutral;
step two: placing half of the filtered wastewater treatment agent in the heavy metal wastewater;
step three: placing the adsorbing material in the heavy metal wastewater;
step four: fully and uniformly stirring the wastewater treatment agent and the heavy metal wastewater;
step five: stirring for 30-40 min, and standing the wastewater treatment agent and the heavy metal wastewater for 25-30 min;
step six: and placing the other half of the wastewater treatment agent in the heavy metal wastewater, and then stirring again for 40-50 min.
3. The heavy metal wastewater treatment agent and wastewater treatment method according to claim 1, characterized in that: the purification comprises the following steps:
the method comprises the following steps: placing the separated heavy metal wastewater in a sedimentation tank, and simultaneously placing aerobic microorganisms in the sedimentation tank;
step two: precipitating in a precipitation tank, filtering, and removing fine suspended matters for 1-2 h;
step three: carrying out primary detection on the heavy metal wastewater after precipitation, and if the heavy metal wastewater is qualified, placing the heavy metal wastewater in a detection box for secondary detection;
step four: and if the heavy metal wastewater after precipitation is unqualified in primary detection, continuously adding aerobic microorganisms into the precipitation tank until the primary detection is qualified.
4. The heavy metal wastewater treatment agent and wastewater treatment method according to claim 1, characterized in that: the detecting and discharging comprises the steps of:
the method comprises the following steps: detecting each index of heavy metal content, smell emitted by the wastewater, turbidity of the wastewater and pH value of the heavy metal wastewater in the detection box;
step two: if all indexes of the heavy metal wastewater in the detection box reach the discharge standard, discharging the wastewater;
step three: and if the detection index is unqualified, treating the heavy metal wastewater until the detection index reaches the detection standard.
5. The heavy metal wastewater treatment agent and wastewater treatment method according to claim 1, characterized in that: the wastewater treatment agent contains dithiocarbamate and/or derivatives thereof and cyclodextrin and/or derivatives thereof.
6. The heavy metal wastewater treatment agent and wastewater treatment method according to claim 2, characterized in that: the adsorbing material comprises a substrate layer and a functional layer, wherein the substrate layer is one of graphene oxide, flaky boron nitride and boron nitride aerogel.
7. The heavy metal wastewater treatment agent and wastewater treatment method according to claim 6, characterized in that: the thickness of the functional layer is 7nm-8nm, and the functional layer is a polydopamine membrane modified by 3-aminopropyltriethoxysilane.
8. The heavy metal wastewater treatment agent and wastewater treatment method according to claim 7, characterized in that: the mass ratio of the 3-aminopropyltriethoxysilane to the polydopamine is 1: 2.
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| CN202110808918.9A CN113354050A (en) | 2021-07-16 | 2021-07-16 | Heavy metal wastewater treating agent and wastewater treatment method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004049352A1 (en) * | 2002-11-25 | 2004-06-10 | Rwe Nukem Gmbh | Method for treating radioactive waste water |
| WO2010133151A1 (en) * | 2009-05-21 | 2010-11-25 | 潍坊金丝达印染有限公司 | Organic wastewater recycling treatment method |
| CN107840544A (en) * | 2017-11-30 | 2018-03-27 | 重庆精创联合环保工程有限公司 | Electroplating effluent treatment method |
| CN112321067A (en) * | 2020-10-14 | 2021-02-05 | 开平汇顺科技有限公司 | Sewage treatment method |
| CN112678934A (en) * | 2019-10-18 | 2021-04-20 | 中国石油化工股份有限公司 | Heavy metal wastewater treatment agent and wastewater treatment method |
| CN112723461A (en) * | 2021-03-31 | 2021-04-30 | 中煤嘉沣(湖南)环保科技有限责任公司 | Heavy metal wastewater treatment method |
-
2021
- 2021-07-16 CN CN202110808918.9A patent/CN113354050A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004049352A1 (en) * | 2002-11-25 | 2004-06-10 | Rwe Nukem Gmbh | Method for treating radioactive waste water |
| WO2010133151A1 (en) * | 2009-05-21 | 2010-11-25 | 潍坊金丝达印染有限公司 | Organic wastewater recycling treatment method |
| CN107840544A (en) * | 2017-11-30 | 2018-03-27 | 重庆精创联合环保工程有限公司 | Electroplating effluent treatment method |
| CN112678934A (en) * | 2019-10-18 | 2021-04-20 | 中国石油化工股份有限公司 | Heavy metal wastewater treatment agent and wastewater treatment method |
| CN112321067A (en) * | 2020-10-14 | 2021-02-05 | 开平汇顺科技有限公司 | Sewage treatment method |
| CN112723461A (en) * | 2021-03-31 | 2021-04-30 | 中煤嘉沣(湖南)环保科技有限责任公司 | Heavy metal wastewater treatment method |
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Application publication date: 20210907 |