CN110950409A - Heavy medium coagulating sedimentation water treatment method - Google Patents
Heavy medium coagulating sedimentation water treatment method Download PDFInfo
- Publication number
- CN110950409A CN110950409A CN201811129091.3A CN201811129091A CN110950409A CN 110950409 A CN110950409 A CN 110950409A CN 201811129091 A CN201811129091 A CN 201811129091A CN 110950409 A CN110950409 A CN 110950409A
- Authority
- CN
- China
- Prior art keywords
- mixture
- stirring
- heavy medium
- water treatment
- particles
- 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
- 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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention belongs to the technical field of water treatment, and particularly relates to a heavy medium coagulating sedimentation water treatment method, which comprises the following steps: a) mixing the wastewater with a coagulant, and carrying out first stirring to obtain a first mixture; b) adding the dense medium particles into the first mixture, and carrying out second stirring to obtain a second mixture, wherein flocs taking the dense medium particles as cores are formed in the second mixture; c) adding a flocculating agent into the second mixture, and carrying out third stirring to further grow flocs to obtain a third mixture; d) curing the third mixture, and continuously increasing flocs; then, precipitating flocs by adopting an inclined tube precipitation method or an inclined plate precipitation method, collecting precipitates, centrifuging, and separating sludge and heavy medium particles; wherein the heavy medium particles are volcanic rock particles; the energy density of the first stirring and the second stirring is greater than the energy density of the third stirring. The invention adopts volcanic rock particles with a microporous structure, and integrates flocculation, sedimentation and adsorption.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a heavy medium coagulating sedimentation water treatment method.
Background
Heavy medium coagulating sedimentation is an extremely fast coagulating sedimentation technology which is widely adopted in the domestic water treatment industry in recent years, heavy medium particles (inert high-density microparticles) are added as flocculating nuclei to increase the concentration of suspended matters in wastewater and accelerate the formation of flocs, and meanwhile, the sedimentation process is greatly accelerated due to the ballast or weighting effect of the heavy medium particles so as to improve the removal effect of turbidity in water. At present, the heavy medium particles are divided into magnetic powder and non-magnetic powder, a magnetic coagulating sedimentation process for short for the magnetic powder is applied, and a micro-sand coagulating sedimentation process for the non-magnetic powder is applied. Compared with the traditional coagulating sedimentation process, the coagulating sedimentation process has the characteristics of high treatment speed, high efficiency, small occupied area, investment saving and the like.
However, the magnetic coagulation sedimentation process and the micro-sand coagulation sedimentation process have poor effect of removing COD in water. When refractory compounds exist in the wastewater, activated carbon is needed to be adopted to adsorb and filter the treated water treated by the coagulating sedimentation process, so that the operation is complex and the treatment cost is high.
Disclosure of Invention
The invention mainly aims to provide a heavy medium coagulating sedimentation water treatment method, aiming at solving the technical problem that the COD removing effect of the existing heavy medium coagulating sedimentation process is poor.
The invention provides a heavy medium coagulating sedimentation water treatment method, which comprises the following steps:
a) mixing the wastewater with a coagulant, and carrying out first stirring to obtain a first mixture;
b) adding heavy medium particles into the first mixture, and carrying out second stirring to obtain a second mixture, wherein flocs taking the heavy medium particles as cores are formed in the second mixture;
c) adding the flocculating agent into the second mixture, and carrying out third stirring to further grow the flocs to obtain a third mixture;
d) aging the third mixture, wherein the flocs continue to grow; then, precipitating the flocs by adopting an inclined tube precipitation method or an inclined plate precipitation method, collecting precipitates, centrifuging, and separating sludge and the heavy medium particles;
wherein the heavy medium particles are volcanic rock particles;
the energy density of the first stirring and the second stirring is greater than the energy density of the third stirring.
Compared with the prior art, the volcanic rock particles with a microporous structure are adopted to replace traditional magnetic powder and micro-sand in the coagulation sedimentation water treatment process, and can adsorb and remove refractory compounds in water while serving as a flocculation core, so that flocculation sedimentation and adsorption are integrated, and the water treatment efficiency is high; meanwhile, the process is optimized, so that the operation is simpler and more convenient, and the process water treatment effect is optimal under the comprehensive action of the coagulant, the volcanic rock particles and the flocculant and in combination with the setting of the energy density of stirring.
Detailed Description
The heavy medium coagulating sedimentation process aims at solving the technical problem that the COD removing effect of the existing heavy medium coagulating sedimentation process is poor. The embodiment of the invention provides a heavy medium coagulating sedimentation water treatment method, which integrates flocculating sedimentation and adsorption, has a good effect of removing COD in water, is simple and optimized to operate, and has low treatment cost.
The invention relates to a heavy medium coagulating sedimentation water treatment method, which comprises the following steps:
a) mixing the wastewater with a coagulant, and carrying out first stirring to obtain a first mixture;
b) adding the dense medium particles into the first mixture, and carrying out second stirring to obtain a second mixture, wherein flocs taking the dense medium particles as cores are formed in the second mixture;
c) adding a flocculating agent into the second mixture, and carrying out third stirring to further grow flocs to obtain a third mixture;
d) curing the third mixture, and continuously increasing flocs; then, precipitating flocs by adopting an inclined tube precipitation method or an inclined plate precipitation method, collecting precipitates, centrifuging, and separating sludge and heavy medium particles;
wherein the heavy medium particles are volcanic rock particles;
the energy density of the first stirring and the second stirring is greater than the energy density of the third stirring.
In the technical scheme, volcanic rock particles with a microporous structure are adopted to replace traditional magnetic powder and micro-sand, and the volcanic rock particles with the microporous structure have the adsorption effect while serving as a flocculation core, so that the volcanic rock particles can adsorb and remove refractory compounds in water, and are integrated with flocculation sedimentation and adsorption, so that the operation is simpler and more convenient.
Further, volcanic rock particles can theoretically be replaced by other microporous materials with a microporous structure and a density greater than that of water, such as: coke powder, zeolite, metal microporous material, ceramic microporous material, etc.
In an embodiment of the invention, the heavy medium particles are preferably volcanic rock particles. Compared with other microporous materials, the volcanic rock particles have wide sources and economic price.
In the embodiment of the invention, the working concentration of the volcanic rock particles is preferably 1000-5000 mg/L, and more preferably 3000-5000 mg/L. When the concentration is lower than 1000mg/L, the flocculation sedimentation speed is slow, and the adsorption effect on COD in water is poor; when the concentration is higher than 5000mg/L, heavy medium particles are easy to deposit, the requirement on stirring equipment is high, the adsorption effect of the heavy medium particles cannot be fully exerted, and resources are wasted. Experimental results show that when the working concentration of volcanic rock particles is 3000-5000 mg/L, the effect of water purification treatment is optimal.
In the embodiment of the invention, the specific surface area of the volcanic rock particles is 10m2(ii)/g or more, theoretically, the larger the specific surface area of the volcanic rock particles, the better the adsorption effect, but when the specific surface area is less than 10m2At the time of/g, the effect of adsorbing and removing COD in water is poor.
The specific surface area of the volcanic rock particles in the embodiment of the invention is preferably 10-50 m2The specific surface area of the specific surface area is similar to that of the volcanic rock raw material, and the specific surface area can be directly applied to the technical scheme of the invention without further processing the microporous structure of the volcanic rock.
In the embodiment of the invention, the particle size of the volcanic rock particles is 50-200 meshes. When the particle size of the volcanic rock particles is smaller than 50 meshes and is too small, the volcanic rock particles are brought away by water flow after not exerting the function of the flocculation core, and the water treatment effect is poor; when the particle size of the volcanic rock particles is larger than 200 meshes, the sedimentation speed of the heavy medium particles in water is too high, the flocculation effect is poor, and the particle size of the heavy medium particles is possibly larger than the pipe diameter of the pump, so that the heavy medium particles are not beneficial to conveying.
In an embodiment of the present invention, the mixing includes: the waste water is mixed with coagulant, and when coagulant is added into the waste water, colloid in the waste water is destabilized and aggregated. The working concentration of the coagulant is preferably 30-100 mg/L, the working concentration of the coagulant is lower than 30mg/L, and the coagulation effect is poor; the working concentration of the coagulant is higher than 100mg/L, which causes coagulant waste and influences the alkalinity of water quality.
Further, the coagulant of the embodiment of the present invention is preferably an aluminum salt or an iron salt, and more preferably iron trichloride, PAC (polyaluminium chloride), iron sulfate, aluminum sulfate, polyferric sulfate, or alum.
In an embodiment of the invention, flocculation comprises: and adding a flocculating agent, wherein the working concentration of the flocculating agent is 0.3-1.5 mg/L. When the working concentration of the flocculating agent is lower than 0.3mg/L, the flocculating effect is poor; when the working concentration of the flocculant is higher than 1.5mg/L, the flocculant is wasted.
Further, the flocculant is an anionic high molecular flocculant, preferably Polyacrylamide (PAM).
Furthermore, when the molecular weight of the flocculant is more than 1000 million daltons, the adsorption and bridging capacity of the flocculant is stronger, and a better flocculation effect can be obtained.
In the embodiment of the present invention, the energy density of the first stirring and the second stirring is preferably 100 to 300W/m3. When the wastewater is mixed with coagulant and heavy medium particles, the energy density of stirring is lower than 100W/m3The stirring speed is too low, which is not beneficial to the uniform mixing of the wastewater, the coagulant and the dense medium particles; when the energy density of stirring is more than 300W/m3Too high stirring speed is not favorable for the formation of flocs.
In the embodiment of the invention, the energy density of the third stirring is 30-80W/m3. After adding the flocculating agent, the flocs further grow, and when the energy density of stirring is lower than 30W/m3The stirring speed is too low, so that the flocculating agent is not favorably and uniformly distributed in the whole system; when the energy density of stirring is more than 80W/m3The stirring speed is too high, the formed floc structure is unstable, and the continuous growth of the floc is not facilitated.
In the embodiment of the present invention, the heavy medium coagulating sedimentation water treatment method specifically comprises:
a) mixing the waste water with a coagulant at an energy density of 100-150W/m3Carrying out first stirring, and hydraulically staying for 1-5 min to obtain a first mixture; the working concentration of the coagulant is 30-100 mg/L;
b) adding volcanic rock particles into the first mixture to obtain a mixture with an energy density of 100-150W/m3Performing second stirring, and performing hydraulic retention for 1-5 min to obtain a second mixture, wherein flocs taking heavy medium particles as cores are formed in the second mixture; the working concentration of the volcanic rock particles is 3000-5000 mg/L;
c) adding a flocculating agent into the second mixture, wherein the energy density is 30-80W/m3Carrying out third stirring, and staying for 8-15 min by waterpower to further grow flocs to obtain a third mixture; the working concentration of the flocculating agent is 0.3-1.5 mg/L;
d) curing the third mixture, and continuously increasing flocs; then, the floc is precipitated by adopting an inclined tube precipitation method or an inclined plate precipitation method, and the precipitate is collected and centrifuged to separate sludge and volcanic rock particles.
By further optimizing and processing the condition parameters of the heavy medium coagulating sedimentation water treatment method provided by the embodiment of the invention, the water quality after processing is better.
Further, the separation in the step d) adopts a hydrocyclone. The hydrocyclone is a classification device for accelerating the sedimentation of ore particles by utilizing centrifugal force, and has the advantages of small floor area, low price, large treatment capacity and the like. According to the embodiment of the invention, the sludge and the volcanic rock particles are separated by the hydrocyclone, so that the volcanic rock particles are convenient to recycle, and the water treatment cost is further saved.
Through field pilot test, volcanic rock particles are adopted as heavy medium particles, and the precipitation speed and the recovery rate of the volcanic rock particles are close to those of the existing magnetic and sand type coagulating sedimentation process; however, the removal rate of COD is 10 to 30 percent higher than that of the prior heavy medium coagulating sedimentation water treatment process.
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more apparent, the present invention is further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment provides a heavy medium coagulating sedimentation water treatment method, which comprises the following steps:
1) mixing the wastewater with a coagulant, and carrying out first stirring for 3min to obtain a first mixture;
2) adding heavy medium particles into the first mixture, and carrying out second stirring for 3min to obtain a second mixture, wherein flocs taking the heavy medium particles as cores are formed in the second mixture;
3) adding a flocculating agent into the second mixture, and carrying out third stirring for 8-10 min to further grow flocs to obtain a third mixture;
4) curing the third mixture, and continuously increasing flocs; then, precipitating flocs by adopting an inclined tube precipitation method, collecting precipitates, centrifuging, and separating sludge and heavy medium particles;
wherein the energy density of the first stirring and the second stirring is greater than the energy density of the third stirring.
In the present example, the heavy medium particles are selected to be volcanic rock particles with a specific surface area of 25m2(ii)/g, the particle size is 120 meshes; in the second mixture, the concentration of the heavy medium particles was 3000 mg/L.
The coagulant was selected to be PAC, the concentration of PAC in the first mixture being 70 mg/L.
The flocculant is selected to be PAM, and the concentration of the flocculant in the third mixture is 0.5 mg/L.
In the step 1), the energy density of the first stirring is 100-150W/m3。
In the step 2), the energy density of the second stirring is 100-150W/m3。
In the step 3), the energy density of the third stirring is 30-60W/m3。
In step 4), the centrifugation is carried out in a hydrocyclone.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A heavy medium coagulating sedimentation water treatment method is characterized by comprising the following steps:
a) mixing the wastewater with a coagulant, and carrying out first stirring to obtain a first mixture;
b) adding heavy medium particles into the first mixture, and carrying out second stirring to obtain a second mixture, wherein flocs taking the heavy medium particles as cores are formed in the second mixture;
c) adding the flocculating agent into the second mixture, and carrying out third stirring to further grow the flocs to obtain a third mixture;
d) aging the third mixture, wherein the flocs continue to grow; then, precipitating the flocs by adopting an inclined tube precipitation method or an inclined plate precipitation method, collecting precipitates, centrifuging, and separating sludge and the heavy medium particles;
wherein the heavy medium particles are volcanic rock particles;
the energy density of the first stirring and the second stirring is greater than the energy density of the third stirring.
2. The heavy medium coagulating sedimentation water treatment method according to claim 1, wherein the working concentration of the volcanic rock particles is 1000-5000 mg/L.
3. The heavy medium coagulating sedimentation water treatment method according to claim 1, wherein the specific surface area of the volcanic rock particles is 10m2More than g.
4. The heavy medium coagulating sedimentation water treatment method according to claim 1, wherein the particle size of the volcanic rock particles is 50 to 200 mesh.
5. The heavy medium coagulation sedimentation water treatment method according to claim 1, wherein the working concentration of the coagulant is 30 to 100 mg/L.
6. The heavy medium coagulating sedimentation water treatment method according to claim 1, wherein the working concentration of the flocculating agent is 0.3-1.5 mg/L;
the flocculant is an anionic high-molecular flocculant.
7. The heavy medium coagulating sedimentation water treatment method according to claim 1, wherein the energy density of the first stirring and the second stirring is 100 to 300W/m3。
8. The heavy medium coagulating sedimentation water treatment method according to claim 1, wherein the energy density of the third stirring is 30 to 80W/m3。
9. The heavy medium coagulating sedimentation water treatment method according to any one of claims 1 to 8, characterized by comprising:
a) mixing the wastewater with the coagulant at an energy density of 100-150W/m3Carrying out first stirring, and hydraulically staying for 1-5 min to obtain a first mixture; the working concentration of the coagulant is 30-100 mg/L;
b) adding the volcanic rock particles into the first mixture to obtain a mixture with an energy density of 100-150W/m3Performing second stirring, and performing hydraulic retention for 1-5 min to obtain a second mixture, wherein a floc taking volcanic rock particles as cores is formed in the second mixture; the working concentration of the volcanic rock particles is 3000-5000 mg/L;
c) adding the flocculating agent into the second mixture, wherein the energy density is 30-80W/m3Carrying out third stirring, and hydraulically staying for 8-15 min to further grow the flocs to obtain a third mixture; the working concentration of the flocculant is 0.3-1.5 mg/L;
d) aging the third mixture, wherein the flocs continue to grow; then, the flocs are precipitated by adopting an inclined tube precipitation method or an inclined plate precipitation method, and the precipitate is collected and centrifuged to separate sludge and the volcanic rock particles.
10. The heavy medium coagulating sedimentation water treatment method according to claim 9, wherein the separation of step d) employs a hydrocyclone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811129091.3A CN110950409A (en) | 2018-09-26 | 2018-09-26 | Heavy medium coagulating sedimentation water treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811129091.3A CN110950409A (en) | 2018-09-26 | 2018-09-26 | Heavy medium coagulating sedimentation water treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110950409A true CN110950409A (en) | 2020-04-03 |
Family
ID=69967784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811129091.3A Pending CN110950409A (en) | 2018-09-26 | 2018-09-26 | Heavy medium coagulating sedimentation water treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110950409A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112573700A (en) * | 2020-12-03 | 2021-03-30 | 湖南海利高新技术产业集团有限公司 | Method for treating organic chemical wastewater by using plant ash |
| CN114455683A (en) * | 2022-02-15 | 2022-05-10 | 臻和慧联(浙江)环境科技有限公司 | Sediment-loaded carrier, carrier preparation method and flocculation sediment loading method |
| CN114890576A (en) * | 2022-05-07 | 2022-08-12 | 中国矿业大学 | Flocculation treatment process for fine particles |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4675112A (en) * | 1985-03-27 | 1987-06-23 | Luigi Verde | Process for the clarification of water |
| CN1181747A (en) * | 1995-02-17 | 1998-05-13 | 环境保护股份有限公司 | Self floculating separation medium and method |
| CN101130445A (en) * | 2006-08-25 | 2008-02-27 | 中国科学院沈阳应用生态研究所 | Natural compound flocculant of chitosan, producing method and uses of the same |
| AU2008200053A1 (en) * | 2008-01-07 | 2009-07-23 | Astec Co., Ltd | Flocculant and Method for Manufacturing the Same |
| CN101648086A (en) * | 2009-09-02 | 2010-02-17 | 朱宁 | Rapid precipitating method and rapid precipitating and separating device |
| CN101698484A (en) * | 2009-10-27 | 2010-04-28 | 南通立源水业科技发展有限公司 | Method for preparing multinuclear polysilicate flocculant |
| CN103708594A (en) * | 2013-12-28 | 2014-04-09 | 太平洋水处理工程有限公司 | High-efficiency dense-medium coagulating sedimentation water treatment process |
-
2018
- 2018-09-26 CN CN201811129091.3A patent/CN110950409A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4675112A (en) * | 1985-03-27 | 1987-06-23 | Luigi Verde | Process for the clarification of water |
| CN1181747A (en) * | 1995-02-17 | 1998-05-13 | 环境保护股份有限公司 | Self floculating separation medium and method |
| CN101130445A (en) * | 2006-08-25 | 2008-02-27 | 中国科学院沈阳应用生态研究所 | Natural compound flocculant of chitosan, producing method and uses of the same |
| AU2008200053A1 (en) * | 2008-01-07 | 2009-07-23 | Astec Co., Ltd | Flocculant and Method for Manufacturing the Same |
| CN101648086A (en) * | 2009-09-02 | 2010-02-17 | 朱宁 | Rapid precipitating method and rapid precipitating and separating device |
| CN101698484A (en) * | 2009-10-27 | 2010-04-28 | 南通立源水业科技发展有限公司 | Method for preparing multinuclear polysilicate flocculant |
| CN103708594A (en) * | 2013-12-28 | 2014-04-09 | 太平洋水处理工程有限公司 | High-efficiency dense-medium coagulating sedimentation water treatment process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112573700A (en) * | 2020-12-03 | 2021-03-30 | 湖南海利高新技术产业集团有限公司 | Method for treating organic chemical wastewater by using plant ash |
| CN112573700B (en) * | 2020-12-03 | 2023-03-28 | 湖南海利高新技术产业集团有限公司 | Method for treating organic chemical wastewater by using plant ash |
| CN114455683A (en) * | 2022-02-15 | 2022-05-10 | 臻和慧联(浙江)环境科技有限公司 | Sediment-loaded carrier, carrier preparation method and flocculation sediment loading method |
| CN114890576A (en) * | 2022-05-07 | 2022-08-12 | 中国矿业大学 | Flocculation treatment process for fine particles |
| CN114890576B (en) * | 2022-05-07 | 2023-09-12 | 中国矿业大学 | Flocculation treatment process of fine particles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR960003230B1 (en) | Process for recovering regenerated absorbent particles and for separating ash therefrom | |
| CN110950409A (en) | Heavy medium coagulating sedimentation water treatment method | |
| JP4223870B2 (en) | Water purification method | |
| CN105906133B (en) | A kind of water body purification method and device of strong magnetic separation-magnetic green substance charcoal absorption | |
| CN112520895B (en) | Gasification grey water aeration hardness removal device and treatment method and application thereof | |
| CN105540987A (en) | Water deep purification method | |
| CN103771630A (en) | Process for treating and recycling mine acid heavy metal wastewater | |
| NO317572B1 (en) | Process for physico-chemical treatment of wastewater, especially of surface water for human consumption | |
| CN201971670U (en) | High-efficiency coagulative precipitation tank | |
| JP4522297B2 (en) | Method and apparatus for treating wastewater containing inorganic suspended particles | |
| CN110950410A (en) | Heavy medium coagulating sedimentation water treatment method | |
| CN104129838A (en) | Settlement method of vanadium mud in leached vanadium liquid | |
| CN113683167B (en) | Magnetic coagulation sedimentation sewage treatment system and method based on low-density magnetic particles | |
| CN114477601A (en) | Method for treating phenol-cyanogen wastewater by using alkali modified fly ash | |
| JP2020531246A (en) | Treatment of water streams containing high concentrations of solids using ballast purification | |
| KR20180050254A (en) | High-rate Water Treatment Method and Equipment using Mixed Mineral As Weighting Agent | |
| JP3262015B2 (en) | Water treatment method | |
| CN112250155B (en) | Heavy medium quick-settling water treatment method | |
| JPH1157309A (en) | Flocculation treatment and device therefof | |
| CN113562884A (en) | Method for treating leaching water of mine waste dump | |
| CN212954612U (en) | Algae-based water treatment device | |
| JPH0880488A (en) | Complete treatment of organic sewage | |
| CN217323490U (en) | Water purification deposits device | |
| CN217148841U (en) | High-turbidity mine water treatment system | |
| CN103232102A (en) | Method for accelerating solid-liquid separation of nanometer particle suspension |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200403 |
|
| RJ01 | Rejection of invention patent application after publication |