CN114149128B - Industrial wastewater treatment method - Google Patents
Industrial wastewater treatment method Download PDFInfo
- Publication number
- CN114149128B CN114149128B CN202111461286.XA CN202111461286A CN114149128B CN 114149128 B CN114149128 B CN 114149128B CN 202111461286 A CN202111461286 A CN 202111461286A CN 114149128 B CN114149128 B CN 114149128B
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- wastewater
- pipe
- cyclone
- sewage
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- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 23
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 12
- 239000010865 sewage Substances 0.000 claims abstract description 37
- 239000002351 wastewater Substances 0.000 claims abstract description 35
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000005189 flocculation Methods 0.000 claims abstract description 18
- 230000016615 flocculation Effects 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000002378 acidificating effect Effects 0.000 claims abstract description 8
- 239000008394 flocculating agent Substances 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 241000220317 Rosa Species 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000003311 flocculating effect Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000009331 sowing Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- FZUJWWOKDIGOKH-UHFFFAOYSA-N sulfuric acid hydrochloride Chemical compound Cl.OS(O)(=O)=O FZUJWWOKDIGOKH-UHFFFAOYSA-N 0.000 description 1
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
- C02F1/001—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
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the technical field of wastewater treatment, in particular to an industrial wastewater treatment method. The method comprises the following steps: step one: mixing acidic wastewater and alkaline wastewater, and adjusting the ph value of the wastewater to 7; step two: heating cold water by utilizing the heat released by neutralization of acid and alkali; step three: adding a flocculating agent into the neutralized wastewater to form primary purified wastewater; step four: filtering the primary purified sewage to obtain flocs therein, thereby forming secondary purified sewage; step five: and carrying out cyclone separation on the secondary purified sewage to obtain sewage without solid impurities. Has the advantage of accelerating the flocculation of industrial sewage.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an industrial wastewater treatment method.
Background
Industrial wastewater can be treated by three ways, namely, a physical method, a chemical method and a biological method: 1. physical treatment is mainly carried out by mechanical equipment, and is the simplest in structure among the three, and is relatively low in price, and is usually carried out by precipitation filtration, heat exchange and combustion. 2. The chemical treatment method is to add chemical substances into industrial wastewater to generate certain chemical reaction with pollution components to generate substances or glue plumes harmless to human bodies and nature, so as to remove impurities in the water, wherein the added chemical substances are usually acid-base agents, chlorine, ozone treatment, coagulating sedimentation and the like. 3. Biological treatment is one of the most commonly used methods in industrial wastewater treatment, and the biological treatment is adopted to decompose organic matters and impurities in water, so that the water is a harmless and pollution-free simple compound. When the method is used for treating industrial wastewater, a plurality of treatment units are often combined with each other so as to achieve effective treatment. But the flocculation rate for industrial sewage is now slow.
Disclosure of Invention
The invention aims to provide an industrial wastewater treatment method which has the advantage of accelerating flocculation of industrial wastewater.
The aim of the invention is achieved by the following technical scheme:
A method for treating industrial wastewater, the method comprising the steps of:
step one: mixing acidic wastewater and alkaline wastewater, and adjusting the ph value of the wastewater to 7;
step two: heating cold water by utilizing the heat released by neutralization of acid and alkali;
step three: adding a flocculating agent into the neutralized wastewater to form primary purified wastewater;
Step four: filtering the primary purified sewage to obtain flocs therein, thereby forming secondary purified sewage;
Step five: and carrying out cyclone separation on the secondary purified sewage to obtain sewage without solid impurities.
The industrial waste water treatment method also uses an industrial waste water treatment device, which comprises a heat utilization box, a neutralization box, a discharge pipe, a circulating pipe and a waste water inlet pipe, wherein the neutralization box is provided with two waste water inlet pipes, the neutralization box is in surface contact with the heat utilization box, the heat utilization box is fixedly connected with two circulating pipes, and the discharge pipe is fixedly connected with the neutralization box.
A pump is arranged between the neutralization box and the discharge pipe.
Drawings
The invention will be described in further detail with reference to the accompanying drawings and detailed description.
FIG. 1 is a flow chart of the present invention;
FIG. 2 is an overall view of the present invention;
FIG. 3 is a neutralization tank of the present invention;
FIG. 4 is a cross-sectional view of the neutralization tank of the present invention;
FIG. 5 is a filtration tank of the present invention;
FIG. 6 is a flocculation tank of the present invention;
FIG. 7 is a cross-piece of the present invention;
FIG. 8 is a diagram of the connection of the flocculation tank and the cross-baffle of the present invention;
FIG. 9 is a cyclone of the present invention;
Fig. 10 is a carrying case of the present invention.
Detailed Description
A method for treating industrial wastewater, the method comprising the steps of:
Step one: mixing the acidic wastewater and the alkaline wastewater, and adjusting the ph value of the finally generated wastewater to 7 by adjusting the proportion of the acidic wastewater to the alkaline wastewater;
step two: in industrial production, a large amount of sulfuric acid and sodium hydroxide are used, and cold water is heated by utilizing the heat release of an acid-base neutralization reaction after the acid wastewater and the alkaline wastewater are mixed;
step three: adding a flocculating agent into the neutralized wastewater to form primary purified wastewater;
Step four: filtering the primary purified sewage to obtain flocs therein, thereby forming secondary purified sewage;
Step five: and carrying out cyclone separation on the secondary purified sewage to obtain sewage without solid impurities.
The neutralization tank section can perform an exemplary process of neutralization of acidic wastewater and alkaline wastewater with reference to fig. 2 to 4:
Since a certain acid and alkali are usually used in the industrial wastewater, mainly sulfuric acid hydrochloric acid is used as a main acid, sodium hydroxide is used as a main alkali, and the wastewater is diluted and discharged along with water flow, an industrial wastewater treatment method is also provided, the device comprises a heat utilization tank 11, a neutralization tank 12, a discharge pipe 13, a circulation pipe 14 and a wastewater inlet pipe 15, two wastewater inlet pipes 15 are arranged on the neutralization tank 12, the neutralization tank 12 is in surface contact with the heat utilization tank 11, two circulation pipes 14 are fixedly connected on the heat utilization tank 11, the discharge pipe 13 is fixedly connected on the neutralization tank 12, acidic and alkaline wastewater is respectively connected through the two inlet pipes 15, the neutralization tank 12 is used as a neutralizing reaction chamber, cold water is introduced through one circulation pipe 14, the heat of neutralization and discharge is discharged through the other circulation pipe 14, the industrial process can be performed by using the hot water, and a sewage pump is arranged between the neutralization tank 12 and the discharge pipe 13 when ph value of the sewage after neutralization of acidic and alkaline wastewater is 6, and the sewage is pumped out through the discharge pipe 13, so that the next treatment is performed.
The flocculation tank section can refer to fig. 6 for an exemplary working process of performing flocculation operation on the sewage after neutralization:
The device also comprises a flocculation box 31, a driving motor 32 and a transmission gear 33, wherein the driving motor 32 is fixedly connected to the upper end of the flocculation box 31, the transmission gear 33 is fixedly connected to an output shaft of the driving motor 32, the two transmission gears 33 are meshed for transmission, the driving motor 32 is started to drive the transmission gear 33 at the upper end of the output shaft to rotate so as to play a driving role, and neutralized sewage enters the flocculation box 31 to carry out the next flocculation operation.
The agitator frame section may perform an exemplary operation of stepwise addition of the flocculation agent with reference to fig. 6:
The device further comprises a stirring frame 34 and a receiving box 35, wherein a plurality of receiving boxes 35 are arranged at the upper end of the stirring frame 34, a transmission gear 33 is fixedly connected to the stirring frame 34, the stirring frame 34 rotates in the flocculation box 31, the rotation of the transmission gear 33 connected to the output shaft of the driving motor 32 can drive the stirring frame 34 fixedly connected to the transmission gear 33 to rotate, the stirring frame 34 rotates and simultaneously receives the flocculation agent through the receiving boxes 35, and the flocculation agent is added through an external pipeline arranged on the receiving boxes 35.
The cross-baffle portion may be subjected to an exemplary operation of adding and simultaneously stirring the flocculants with reference to fig. 7 and 8:
The conventional method for manually sowing the flocculating agent for the solid impurities in the industrial sewage generally comprises the steps of manually sowing the flocculating agent, wherein the flocculating process is time-consuming, the device further comprises a connecting plate 41, an adding pipe 42, a transverse baffle 43 and a liquid outlet 44, a plurality of transverse baffles 43 are fixedly connected between the connecting plate 41 and the adding pipe 42, the liquid outlets 44 are formed in the transverse baffles 43, a plurality of connecting plates 41 and a plurality of adding pipes 42 are fixedly connected to a stirring frame 34, the adding pipes 42 are communicated with a receiving box 35, the stirring frame 34 can rotate while all driving the connecting plates connected to the stirring frame to rotate, the sewage is stirred through the transverse baffles 43, and the flocculating agent is gradually sowed through the liquid outlets 44 while stirring, so that the flocculating of the solid impurities in the sewage is quickened, and the sewage after the flocculating is purified once.
The filter box section can perform an exemplary operation of filtering primary purified sewage and increasing the sewage flow rate with reference to fig. 2 and 5:
The device still includes rose box 21, communicating pipe 22 and accelerating draft tube 23, communicating pipe 22 rigid coupling is on rose box 21, be provided with the accelerating pump between accelerating draft tube 23 and the rose box 21, the rose box 21 upper end is provided with the collecting pipe, install pH detector in the collecting pipe, can once purify the pH value of sewage in the rose box 21, prevent that the pH value after once purifying the sewage from not reaching standards, lead to environmental pollution, rose box 21 improves the height on vertical position through the support frame, through with once purifying the sewage pump into rose box 21, be provided with the multilayer activated carbon in the rose box 21 and filter the primary purification sewage that gets into, filter the floccule that forms and form secondary purification sewage, later promote by the pump between accelerating draft tube 23 and the rose box 21, through pump and accelerating draft tube 23 accelerate, can make the secondary purification sewage follow the quick outflow of accelerating draft tube 23.
The cyclone part can perform an exemplary working procedure of separating and discharging fine solid particles in secondary purified sewage with reference to fig. 2 and 9:
The device also comprises a cyclone 51, a support frame 52 and a liquid storage chamber 53, wherein the support frame 52 is fixedly connected to the bottom of the cyclone 51, the liquid storage chamber 53 is communicated with the cyclone 51 through a pipeline, and the cyclone 51 is fixedly connected to the accelerating draft tube 23. The bottom of the cyclone 51 is provided with a valve, and the accelerating draft tube 23 can ensure that the outflow speed of the secondary purified sewage enters along the radial tangential direction of the cyclone 51 so as to ensure that the cyclone generates strong three-dimensional elliptic strong rotary shearing turbulence motion. Because the coarse particles and the fine particles have different particle sizes, the coarse particles and the fine particles are subjected to different sizes such as centrifugal force, centripetal buoyancy force, fluid drag force and the like, solid particles are discharged from the bottom of the cyclone 51 under the action of centrifugal sedimentation, liquid is discharged from the upper end pipe of the cyclone 51, and the speed of discharging the solid particles is controlled by adjusting the opening and closing degree of a valve arranged at the bottom of the cyclone 51.
The carrying box portion can carry out an exemplary working procedure for carrying out the fine solid particles separated by the cyclone with reference to fig. 2 and 10:
the device further comprises a carrying box 61 and an opening and closing door 62, wherein the opening and closing door 62 rotates on the carrying box 61, the carrying box 61 is positioned right below the cyclone 51, a sealing rubber strip is arranged between the opening and closing door 62 and the carrying box 61, a connecting shaft is arranged at the upper end of the opening and closing door 62, and the opening and closing door 62 is guaranteed to rotate on the carrying box 61 through the connecting shaft.
Claims (6)
1. A method for treating industrial wastewater, the method comprising the steps of:
step one: mixing acidic wastewater and alkaline wastewater, and adjusting the ph value of the wastewater to 7;
step two: heating cold water by utilizing the heat released by neutralization of acid and alkali;
step three: adding a flocculating agent into the neutralized wastewater to form primary purified wastewater;
Step four: filtering the primary purified sewage to obtain flocs therein, thereby forming secondary purified sewage;
Step five: carrying out cyclone separation on the secondary purified sewage to obtain sewage without solid impurities;
The industrial wastewater treatment device comprises a heat utilization box (11), a neutralization box (12), a discharge pipe (13), a circulating pipe (14) and a wastewater inlet pipe (15), wherein the neutralization box (12) is provided with two wastewater inlet pipes (15), the neutralization box (12) is in surface contact with the heat utilization box (11), the heat utilization box (11) is fixedly connected with the two circulating pipes (14), and the discharge pipe (13) is fixedly connected to the neutralization box (12);
The device also comprises a flocculation box (31), a driving motor (32) and a transmission gear (33), wherein the driving motor (32) is fixedly connected to the upper end of the flocculation box (31), the transmission gear (33) is fixedly connected to an output shaft of the driving motor (32), and the two transmission gears (33) are meshed for transmission;
The device is characterized by further comprising a stirring frame (34) and a receiving box (35), wherein a plurality of receiving boxes (35) are arranged at the upper end of the stirring frame (34), a transmission gear (33) is arranged on the stirring frame (34), and the stirring frame (34) rotates in the flocculation box (31);
the device still includes connecting plate (41), adds pipe (42), transverse baffle (43) and liquid outlet (44), and the rigid coupling has a plurality of transverse baffles (43) between connecting plate (41) and the pipe (42) of adding, all is provided with liquid outlet (44) on a plurality of transverse baffles (43), and the rigid coupling has a plurality of connecting plates (41) and a plurality of pipe (42) of adding on stirring frame (34), and a plurality of pipe (42) of adding all communicate with accepting box (35).
2. A method for treating industrial wastewater according to claim 1, wherein: a pump is arranged between the neutralization box (12) and the discharge pipe (13).
3. A method for treating industrial wastewater according to claim 1, wherein: the device also comprises a filter box (21), a communicating pipe (22) and an accelerating draft tube (23), wherein the communicating pipe (22) is fixedly connected to the filter box (21), an accelerating pump is arranged between the accelerating draft tube (23) and the filter box (21), and a collecting pipe is arranged at the upper end of the filter box (21).
4. A method of treating industrial wastewater as claimed in claim 3, wherein: the device also comprises a cyclone (51), a support frame (52) and a liquid storage chamber (53), wherein the support frame (52) is fixedly connected to the bottom of the cyclone (51), the liquid storage chamber (53) is communicated with the cyclone (51) through a pipeline, and the cyclone (51) is fixedly connected to the accelerating draft tube (23).
5. The method for treating industrial wastewater according to claim 4, wherein: the bottom of the cyclone (51) is provided with a valve.
6. The method for treating industrial wastewater according to claim 5, wherein: the device also comprises a carrying box (61) and an opening and closing door (62), wherein the opening and closing door (62) is rotated on the carrying box (61), and the carrying box (61) is positioned right below the cyclone (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461286.XA CN114149128B (en) | 2021-12-03 | 2021-12-03 | Industrial wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461286.XA CN114149128B (en) | 2021-12-03 | 2021-12-03 | Industrial wastewater treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114149128A CN114149128A (en) | 2022-03-08 |
| CN114149128B true CN114149128B (en) | 2024-06-07 |
Family
ID=80455892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111461286.XA Active CN114149128B (en) | 2021-12-03 | 2021-12-03 | Industrial wastewater treatment method |
Country Status (1)
| Country | Link |
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| CN (1) | CN114149128B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170036499A (en) * | 2015-09-24 | 2017-04-03 | 김종택 | Method and device for cyclic utilizing processing of designated waste |
| CN206345710U (en) * | 2016-12-20 | 2017-07-21 | 山东华通环境科技股份有限公司 | A kind of flocculant agitating device |
| CN108675568A (en) * | 2018-07-13 | 2018-10-19 | 苏州爱源环境工程技术服务有限公司 | A kind of Lithium Battery Industry waste water purification system |
| CN209010209U (en) * | 2018-08-28 | 2019-06-21 | 南京中船绿洲机器有限公司 | Ship tail gas desulfurization water treatment facilities |
| CN110655256A (en) * | 2019-10-14 | 2020-01-07 | 宁波市奉化日之升贸易有限公司 | Method for treating acidic wastewater and alkaline wastewater |
| CN211367085U (en) * | 2019-09-29 | 2020-08-28 | 内蒙古众元测试技术有限公司 | Laboratory waste acid neutralization treatment device |
-
2021
- 2021-12-03 CN CN202111461286.XA patent/CN114149128B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170036499A (en) * | 2015-09-24 | 2017-04-03 | 김종택 | Method and device for cyclic utilizing processing of designated waste |
| CN206345710U (en) * | 2016-12-20 | 2017-07-21 | 山东华通环境科技股份有限公司 | A kind of flocculant agitating device |
| CN108675568A (en) * | 2018-07-13 | 2018-10-19 | 苏州爱源环境工程技术服务有限公司 | A kind of Lithium Battery Industry waste water purification system |
| CN209010209U (en) * | 2018-08-28 | 2019-06-21 | 南京中船绿洲机器有限公司 | Ship tail gas desulfurization water treatment facilities |
| CN211367085U (en) * | 2019-09-29 | 2020-08-28 | 内蒙古众元测试技术有限公司 | Laboratory waste acid neutralization treatment device |
| CN110655256A (en) * | 2019-10-14 | 2020-01-07 | 宁波市奉化日之升贸易有限公司 | Method for treating acidic wastewater and alkaline wastewater |
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| Publication number | Publication date |
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| CN114149128A (en) | 2022-03-08 |
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Effective date of registration: 20240513 Address after: 430000, No. 519-6 Juxiang Road, Biological Industry Park, Yichang Area, China (Hubei) Free Trade Zone, Yichang City, Hubei Province, China 102 Applicant after: Hubei Zhiyun Ruiqi Enterprise Management Co.,Ltd. Country or region after: China Address before: 150000 No. 2, floor 3, unit 4, building 1, linkejiayuan, No. 3, health care Road, Nangang District, Harbin, Heilongjiang Province Applicant before: Liu Yushuang Country or region before: China |
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