CN112047539A - Sewage treatment method - Google Patents
Sewage treatment method Download PDFInfo
- Publication number
- CN112047539A CN112047539A CN202010931850.9A CN202010931850A CN112047539A CN 112047539 A CN112047539 A CN 112047539A CN 202010931850 A CN202010931850 A CN 202010931850A CN 112047539 A CN112047539 A CN 112047539A
- Authority
- CN
- China
- Prior art keywords
- sewage
- electrode
- adopting
- ferrous sulfate
- flocculation
- 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
- 239000010865 sewage Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000016615 flocculation Effects 0.000 claims abstract description 19
- 238000005189 flocculation Methods 0.000 claims abstract description 19
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 16
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 16
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 16
- 230000003851 biochemical process Effects 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 10
- 239000011574 phosphorus Substances 0.000 claims abstract description 10
- 239000008394 flocculating agent Substances 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 125000001477 organic nitrogen group Chemical group 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 4
- 238000006731 degradation reaction Methods 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 238000006056 electrooxidation reaction Methods 0.000 abstract description 5
- 230000033558 biomineral tissue development Effects 0.000 abstract description 3
- 230000001603 reducing effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- -1 carbon sugars Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000000346 sugar Nutrition 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
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
-
- 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
- C02F2101/30—Organic compounds
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4611—Fluid flow
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a sewage treatment method, which comprises the following steps: firstly, adopting an electrode to pretreat sewage; step two, adopting ferrous sulfate as a flocculating agent to carry out flocculation treatment in a flocculation tank; and step three, processing by adopting a biochemical process. The BDD electrode or the graphene electrode is adopted for pretreatment, COD in the sewage is reduced, organic matters which are difficult to biodegrade are decomposed into micromolecular organic matters, organic nitrogen is converted into inorganic nitrogen, organic phosphorus is converted into inorganic phosphorus, biodegradability of the sewage is greatly improved, mineralization degree of pollutants in the sewage is improved, and subsequent flocculation treatment is facilitated; the flocculation treatment can remove partial pollutants and can react with the residual active oxygen of the electrooxidation, thereby reducing the influence on the subsequent biochemical process; the invention is easy to operate and can effectively treat the sewage.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment method.
Background
With the rapid development of the economic society and the gradual improvement of the life quality of people, the discharge amount of industrial wastewater and domestic wastewater is increasingly increased, the water environment pollution seriously harms the health and the life of people and livestock, seriously threatens the production life and the ecological balance of human beings, and the advanced oxidation is generally adopted as the pretreatment for the sewage difficult to biodegrade. The advanced oxidation includes Fenton and ozone electrooxidation. The Fenton process needs to add a large amount of ferrous sulfate and hydrogen peroxide, and the process generates a large amount of solid waste. The oxidation capacity of the ozone is too weak, so that the ozone can only be used for treating 20mg/L COD generally, and the biodegradability of the ozone to sewage is not greatly improved. Electro-oxidation has BDD (boron doped diamond), graphene electrodes, DSA electrodes, graphite or carbon sugars. The current density of the DSA electrode is generally not more than 200A/square meter, the current density of graphite or carbon steel is generally not more than 100A/square meter, the active oxygen ratio generated by the two systems after sewage treatment is low, the sewage enters biochemistry after aeration treatment, but the two electrodes have two weaknesses, namely the service life of the electrode is not more than 2 years, the degradation depth of the sewage is not more than 50%, and the market acceptance is low, so the invention provides a sewage treatment method based on the BDD electrode and the graphene electrode.
Disclosure of Invention
The invention aims to solve the problems and designs a sewage treatment method.
The technical scheme of the invention is that the sewage treatment method comprises the following steps:
firstly, adopting an electrode to pretreat sewage;
adding ferrous sulfate serving as a flocculating agent into a flocculation tank to flocculate the pretreated sewage;
and step three, processing by adopting a biochemical process.
As a further illustration of the present invention, the electrodes used in step one include BDD electrodes and graphene electrodes.
As a further illustration of the invention, the current density of the graphene electrode is 300-1000A/sq m, and the current density of the BDD electrode is 500-1000A/sq m.
As a further illustration of the invention, the amount of ferrous sulfate added in step two is not less than 0.1g per ton of water. The ferrous sulfate has the functions of a flocculating agent and reducing property, and can react with residual active oxygen (residual chlorine, sodium hypochlorite and the like) after electrooxidation so as to reduce the influence on subsequent biochemistry.
As a further illustration of the invention, in step two, an alkali is added to adjust the pH during the addition of ferrous sulfate.
As a further illustration of the invention, the COD degradation rate of the sewage by the electrode adopted in the step one is not lower than 50%.
As a further illustration of the invention, step one decomposes nonbiodegradable organics into small molecule organics, converts organic nitrogen into inorganic nitrogen, and converts organic phosphorus into inorganic phosphorus.
The sewage treatment method has the beneficial effects that the sewage treatment method comprises pretreatment, flocculation treatment and biochemical process, the BDD electrode or the graphene electrode is adopted for pretreatment, COD in the sewage is reduced, organic matters which are difficult to biodegrade are decomposed into micromolecular organic matters, organic nitrogen is converted into inorganic nitrogen, organic phosphorus is converted into inorganic phosphorus, the biodegradability of the sewage is greatly improved, the mineralization degree of pollutants in the sewage is improved, and the subsequent flocculation treatment is facilitated; the flocculation treatment can remove partial pollutants and can react with residual active oxygen after electrooxidation, so that the influence on the subsequent biochemical process is reduced; the invention is easy to operate and can effectively treat the sewage.
Drawings
FIG. 1 is a schematic flow diagram of a wastewater treatment process according to the present invention;
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, and as shown in fig. 1, a method for treating wastewater mainly comprises three steps, namely, pretreatment, flocculation and biochemical processes, which will be described in detail below.
Step one, pretreatment: the sewage is pretreated by adopting the electrode, the current density of the graphene electrode is 300-1000A/square meter, and the current density of the BDD electrode is 500-1000A/square meter, so that COD in the sewage is reduced in the pretreatment process, the organic matters which are difficult to biodegrade are decomposed into micromolecular organic matters, organic nitrogen is converted into inorganic nitrogen, organic phosphorus is converted into inorganic phosphorus, the biodegradability of the sewage can be greatly improved by the pretreatment, the mineralization degree of pollutants in the sewage is improved, the subsequent flocculation treatment is facilitated, and the COD degradation rate of the BDD electrode or the graphene electrode to the sewage is not lower than 50 percent in the step;
step two, flocculation treatment: adding ferrous sulfate serving as a flocculating agent and being added in an amount of not less than 0.1 g/ton of water into a flocculation tank, wherein the addition amount of the ferrous sulfate is preferably not less than 0.15 g/ton of water, more preferably not less than 0.2 g/ton of water, adding a small amount of alkali to adjust the pH value to be suitable for a subsequent biochemical process when the ferrous sulfate is added, pretreating the sewage, flowing into the flocculation tank, and carrying out flocculation treatment, wherein a small amount (not more than 15mg/L) of active oxygen substances (such as residual chlorine, sodium hypochlorite and the like) are remained in the pretreated sewage and are harmful to the subsequent biochemical process, so that the flocculation treatment is carried out, partial pollutants can be removed, and simultaneously, the ferrous sulfate has reducibility and can react with the active oxygen to reduce the influence on the subsequent biochemical process;
step three, biochemical process: the biochemical process of the invention adopts a more conventional process in sewage treatment.
Example 1.
Pretreating sewage by adopting a BDD electrode, wherein the current density of the BDD electrode is 500A/square meter;
adding ferrous sulfate serving as a flocculating agent and added in an amount of 0.2 g/ton of water into a flocculation tank, adding a small amount of alkali when adding the ferrous sulfate to adjust the pH value to a suitable pH value for a subsequent biochemical process, and pretreating sewage and then flowing into the flocculation tank for flocculation treatment;
and step three, finishing the treatment of the sewage by adopting a biochemical process.
Example 2.
In example 2, the first step was adjusted, and the BDD electrode was adjusted to be a graphene electrode, and the rest was the same as in example 1.
Example 3.
Example 3 was modified for step two to adjust the ferrous sulfate loading to 0.5 g/ton water, all other things being consistent with example 1.
Example 4.
Example 4 was adjusted for step one, adjusting the current density of the BDD electrode to 1000A/square meter, all other things remaining the same as example 1.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (7)
1. A method of wastewater treatment, comprising the steps of:
firstly, adopting an electrode to pretreat sewage;
adding ferrous sulfate serving as a flocculating agent into a flocculation tank to flocculate the pretreated sewage;
and step three, processing by adopting a biochemical process.
2. The method of claim 1, wherein the electrode used in the first step comprises a BDD electrode or a graphene electrode.
3. The method as claimed in claim 2, wherein the current density of the graphene electrode is 300-1000A/m, and the current density of the BDD electrode is 500-1000A/m.
4. The method according to claim 1, wherein the amount of ferrous sulfate added in step two is not less than 0.1 g/ton of water.
5. The method of claim 1, wherein in step two, an alkali is added to adjust the pH when the ferrous sulfate is added.
6. The method according to claim 1, wherein the COD degradation rate of the wastewater by the electrode used in the first step is not less than 50%.
7. The method of claim 1, wherein the first step is to decompose organic matter that is difficult to be biodegraded into small molecular organic matter, convert organic nitrogen into inorganic nitrogen, and convert organic phosphorus into inorganic phosphorus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010931850.9A CN112047539A (en) | 2020-09-07 | 2020-09-07 | Sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010931850.9A CN112047539A (en) | 2020-09-07 | 2020-09-07 | Sewage treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112047539A true CN112047539A (en) | 2020-12-08 |
Family
ID=73611357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010931850.9A Pending CN112047539A (en) | 2020-09-07 | 2020-09-07 | Sewage treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112047539A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794569A (en) * | 2020-12-29 | 2021-05-14 | 昆山美淼环保科技有限公司 | Method for pretreating phenolic resin production wastewater before biochemical treatment |
| CN114349147A (en) * | 2021-12-15 | 2022-04-15 | 北京博纳晶科科技有限公司 | Advanced oxidation treatment method and equipment for phosphorus-containing flame retardant wastewater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105084648A (en) * | 2015-07-21 | 2015-11-25 | 昆山美淼环保科技有限公司 | Treatment method for hardly biodegraded sewage |
| CN106315960A (en) * | 2016-10-10 | 2017-01-11 | 四川奎能环保科技有限公司 | Treatment method for wastewater of oil and gas field |
| CN106927544A (en) * | 2017-05-02 | 2017-07-07 | 唐山永合水处理剂有限公司 | The method of electrocatalytic oxidation water treatment facilities and its treatment organic wastewater with difficult degradation thereby |
| CN109534594A (en) * | 2018-11-27 | 2019-03-29 | 南京万德斯环保科技股份有限公司 | A kind of landfill leachate MBR goes out method for deeply treating water and system |
| CN109851115A (en) * | 2019-02-15 | 2019-06-07 | 北京今大禹环境技术股份有限公司 | A kind of technique based on organic matter in electrocatalytic oxidation reasonable sanding reverse osmosis concentrated water |
| CN110204144A (en) * | 2019-05-31 | 2019-09-06 | 山东省科学院海洋仪器仪表研究所 | A kind of sewage disposal system and processing method based on Boron-doped diamond |
-
2020
- 2020-09-07 CN CN202010931850.9A patent/CN112047539A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105084648A (en) * | 2015-07-21 | 2015-11-25 | 昆山美淼环保科技有限公司 | Treatment method for hardly biodegraded sewage |
| CN106315960A (en) * | 2016-10-10 | 2017-01-11 | 四川奎能环保科技有限公司 | Treatment method for wastewater of oil and gas field |
| CN106927544A (en) * | 2017-05-02 | 2017-07-07 | 唐山永合水处理剂有限公司 | The method of electrocatalytic oxidation water treatment facilities and its treatment organic wastewater with difficult degradation thereby |
| CN109534594A (en) * | 2018-11-27 | 2019-03-29 | 南京万德斯环保科技股份有限公司 | A kind of landfill leachate MBR goes out method for deeply treating water and system |
| CN109851115A (en) * | 2019-02-15 | 2019-06-07 | 北京今大禹环境技术股份有限公司 | A kind of technique based on organic matter in electrocatalytic oxidation reasonable sanding reverse osmosis concentrated water |
| CN110204144A (en) * | 2019-05-31 | 2019-09-06 | 山东省科学院海洋仪器仪表研究所 | A kind of sewage disposal system and processing method based on Boron-doped diamond |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794569A (en) * | 2020-12-29 | 2021-05-14 | 昆山美淼环保科技有限公司 | Method for pretreating phenolic resin production wastewater before biochemical treatment |
| CN114349147A (en) * | 2021-12-15 | 2022-04-15 | 北京博纳晶科科技有限公司 | Advanced oxidation treatment method and equipment for phosphorus-containing flame retardant wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mandal et al. | Review on landfill leachate treatment by electrochemical oxidation: Drawbacks, challenges and future scope | |
| Tee et al. | Review on hybrid energy systems for wastewater treatment and bio-energy production | |
| CN106554126B (en) | Deep standard-reaching treatment method and system for reverse osmosis concentrated water | |
| CN107176760A (en) | A kind of high salt advance for the treatment of process of cyanide-bearing effluent and processing system | |
| CN108996808B (en) | Biochemical combined treatment process and equipment for degradation-resistant concentrated water in steel industry | |
| CN1631818A (en) | Organic waste water treatment process | |
| CN104829068A (en) | Treatment method of high-concentration recalcitrant wastewater | |
| CN108996821B (en) | Treatment system and treatment method for landfill leachate | |
| CN112047539A (en) | Sewage treatment method | |
| CN106277480B (en) | Treatment process of high-concentration ammonia nitrogen wastewater | |
| CN105439368A (en) | Ethylene waste alkali liquor advanced processing method | |
| CN111807610A (en) | Method and system for deeply removing total nitrogen in sewage | |
| CN205442899U (en) | Dense water processing system of manifold type reverse osmosis | |
| CN113582439A (en) | Iron-carbon Fenton pretreatment method for acidic high-salt high-concentration organic wastewater | |
| CN113772886A (en) | Full-quantitative treatment method of landfill leachate | |
| CN113185059A (en) | Advanced treatment method for printed circuit board wastewater | |
| CN108147591B (en) | Method for treating high-concentration alkaline resin desorption solution by catalytic ozone oxidation technology | |
| CN107216006B (en) | Leather wastewater treatment system and method | |
| CN112028408B (en) | Advanced treatment method and system for aromatic and heterocyclic compound wastewater | |
| CN212425814U (en) | Advanced treatment system for aromatic and heterocyclic compound wastewater | |
| KR100541844B1 (en) | The processing method of textile-waste water by the combined process | |
| CN111995177A (en) | Method for full-quantitative treatment of landfill leachate through electron beam irradiation | |
| KR20010048957A (en) | Method for treating unresolvable wastewater | |
| CN111470722A (en) | Treatment method of rubber processing wastewater difficult to biodegrade | |
| CN219991338U (en) | Full quantization processing system of landfill leachate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201208 |
|
| WD01 | Invention patent application deemed withdrawn after publication |