CN111842432A - Condensate treatment method and device - Google Patents
Condensate treatment method and device Download PDFInfo
- Publication number
- CN111842432A CN111842432A CN202010735722.7A CN202010735722A CN111842432A CN 111842432 A CN111842432 A CN 111842432A CN 202010735722 A CN202010735722 A CN 202010735722A CN 111842432 A CN111842432 A CN 111842432A
- Authority
- CN
- China
- Prior art keywords
- condensate
- phosphate
- treatment method
- control valve
- stirring
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
Abstract
The invention relates to the technical field of condensate treatment, in particular to a condensate treatment method and a using device thereof. The treatment method at least comprises the following steps: (1) pouring the condensed material into a container, and stirring; (2) adding water into the step (1) and stirring; (3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
Description
Technical Field
The invention relates to the technical field of condensate treatment, in particular to a condensate treatment method and a using device thereof.
Background
At present, the treatment methods for removing heavy metals from industrial waste mainly include ion exchange methods, electrolytic methods, reverse osmosis methods, electrodialysis methods, and bacterial decomposition methods. However, the conventional equipment is difficult to treat a large amount of condensate, the conventional method has poor effect of treating heavy metal, and the treated condensate cannot be recycled, so that the product performance is influenced when the condensate is applied to production again. The reverse osmosis method and the electrodialysis method are easy to cause membrane scaling and blockage, influence the service life of the membrane and have high treatment cost. The electrolytic method has problems of high power consumption, large consumption of electrolytic plates, and high treatment cost. The electrodialysis method is also called as ion exchange method, because the exchange column is easy to saturate, the ion exchange method is not suitable for treating high-concentration waste water, the primary investment is large, the occupied area is large, the treatment problem of regenerated eluent exists, and the secondary pollution is easy to cause. The bacterial decomposition method is also called as a microbiological method, and because the functional bacteria in the microbiological method have slower propagation speed, the reaction efficiency is lower.
Therefore, the development of a condensate treatment method and a device using the same become the focus of research and development of the technical personnel in the field.
Disclosure of Invention
In order to solve the technical problem, a first aspect of the present invention provides a condensate treatment method, which at least comprises the following steps:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
As a preferable technical scheme of the invention, the mass ratio of the condensate to the reaction reagent is (1-4): 1.
as a preferable technical scheme of the invention, the mass ratio of the condensate to the reaction reagent is (1.5-3): 1.
as a preferable technical scheme, the mass ratio of the condensate to the water is 1: (2-6).
As a preferable technical scheme of the invention, the stirring time of the step (3) is 40-55 h.
As a preferable technical scheme of the invention, the stirring time of the step (3) is 35-50 h.
In a preferred embodiment of the present invention, the reactant is selected from one or more of ammonium dihydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, ammonium hydrogen phosphate, sodium hydrogen phosphate, potassium hydrogen phosphate, dibasic ammonium phosphate, dibasic sodium phosphate, dibasic potassium phosphate, ammonium phosphate, sodium phosphate, and potassium phosphate.
In a preferred embodiment of the present invention, the reactant is ammonium dihydrogen phosphate.
A second aspect of the invention provides a use of a condensate treatment process, the use comprising at least: the device comprises a stirring container 1, a liquid level detector 2, a water control valve K1, an electric control valve K2 and a discharge valve K3; the water control valve K1, the electric control valve K2 and the liquid level detector 2 are connected in sequence; the liquid level detector 2 is arranged inside the stirring container 1; the discharge valve K3 is arranged at the bottom of the stirring container 1.
In a preferred embodiment of the present invention, the surface of the stirring container 1 is provided with scale marks 3.
Has the advantages that: the invention provides a condensate treatment method, which can rapidly and efficiently remove heavy metal in condensate by adding a special reaction reagent into the condensate, and the possible reason is that the reaction reagent added in the invention contains phosphate radical, complex metal ions are easy to precipitate in a water system, so that the metal is further removed, and particularly the mass ratio of the condensate to the reaction reagent is controlled to be (1-4): 1, the removal effect is best; in addition, the invention also provides a using device of the condensate treatment method, which mainly comprises a stirring container, a liquid level detector, a water control valve, an electric control valve and a discharge valve; by arranging the scale marks and the liquid level detector in the stirring container, a large amount of condensate can be treated more conveniently, and the application range of condensate treatment is expanded; the invention solves the problems of difficult treatment and low purification precision of a large amount of condensate in the prior art by adopting the technical means of combining the method and the device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 shows the apparatus used in the condensate treatment method of the example.
Description of the symbols: 1-a stirred vessel; 2-a liquid level detector; 3-scale mark; k1-water control valve; k2-electrically controlled valve; k3-discharge valve.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
In order to solve the technical problem, a first aspect of the present invention provides a condensate treatment method, which at least comprises the following steps:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
The condensate of the present invention contains heavy metals, and the types of the heavy metals are not particularly limited, and gold, silver, copper, iron, mercury, lead, cadmium, and the like may be mentioned.
In a preferred embodiment, the mass ratio of the condensate to the reactive agent is (1-4): 1.
in a preferred embodiment, the mass ratio of the condensate to the reactive agent is (1.5-3): 1.
in a most preferred embodiment, the mass ratio of the condensate to the reactive agent is 2: 1.
in a preferred embodiment, the mass ratio of the condensate to water is 1: (2-6).
In a most preferred embodiment, the mass ratio of the condensate to water is 1: 4.
in a preferred embodiment, the stirring time of step (3) is 40-55 h.
In a preferred embodiment, the stirring time of step (3) is 35 to 50 hours.
In a preferred embodiment, the stirring time of step (3) is 48 h.
In a preferred embodiment, the reactive agent is selected from one or more of monoammonium phosphate, monosodium phosphate, monopotassium phosphate, monoammonium phosphate, sodium hydrogen phosphate, potassium hydrogen phosphate, dibasic ammonium phosphate, dibasic sodium phosphate, dibasic potassium phosphate, dibasic ammonium phosphate, tribasic potassium phosphate, ammonium phosphate, sodium phosphate, potassium phosphate.
In a most preferred embodiment, the reactant is ammonium dihydrogen phosphate.
A second aspect of the invention provides a use of a condensate treatment process, the use comprising at least: the device comprises a stirring container 1, a liquid level detector 2, a water control valve K1, an electric control valve K2 and a discharge valve K3; the water control valve K1, the electric control valve K2 and the liquid level detector 2 are connected in sequence; the liquid level detector 2 is arranged inside the stirring container 1; the discharge valve K3 is arranged at the bottom of the stirring container 1.
The invention firstly adds the condensate into the stirring container, determines the content of the added condensate according to the condensate reaching the scale mark marked by the stirring container, and stops adding continuously. The invention mainly aims to add the condensate and the moisture in batches so as to measure the adding amount of the materials during adding and facilitate the reaction with larger reaction amount.
The liquid level detector is used for detecting the amount of water in the container, if the water level reaches the height required by the experiment, the electric control valve K2 is closed, an alarm is given, and then the water control valve is closed, so that the addition amount of the materials is convenient to control, and the liquid level detector is particularly suitable for systems with large material reaction amount.
In a preferred embodiment, the surface of the mixing container 1 is provided with graduation marks 3.
The condensate treatment method can be applied to the fields of heavy metal-containing condensate, waste oil and the like.
It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the raw materials used are commercially available from national chemical reagents, unless otherwise specified.
Examples
In order to better understand the above technical solutions, the following detailed descriptions will be provided with reference to specific embodiments. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention. In addition, the raw materials are commercially available and the extraction methods of the extract are all conventional extraction methods, if not otherwise specified.
Example 1
There is provided a condensate treatment process comprising at least the steps of:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
The mass ratio of the condensate to the reaction reagent is 2: 1, the mass ratio of the condensate to water is 1: 4.
the stirring time of the step (3) is 48 h.
The reaction reagent is ammonium dihydrogen phosphate.
Use of a condensate treatment process, the use comprising: the device comprises a stirring container 1, a liquid level detector 2, a water control valve K1, an electric control valve K2 and a discharge valve K3; the water control valve K1, the electric control valve K2 and the liquid level detector 2 are connected in sequence; the liquid level detector 2 is arranged inside the stirring container 1; the discharge valve K3 is arranged at the bottom of the stirring container 1.
The surface of the stirring container 1 is provided with scale marks.
Example 2
There is provided a condensate treatment process comprising at least the steps of:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
The mass ratio of the condensate to the reaction reagent is 1: 1. the mass ratio of the condensate to water is 1: 4.
the stirring time of the step (3) is 48 h.
The reaction reagent is ammonium dihydrogen phosphate.
Use of a condensate treatment process, the use comprising: the device comprises a stirring container 1, a liquid level detector 2, a water control valve K1, an electric control valve K2 and a discharge valve K3; the water control valve K1, the electric control valve K2 and the liquid level detector 2 are connected in sequence; the liquid level detector 2 is arranged inside the stirring container 1; the discharge valve K3 is arranged at the bottom of the stirring container 1.
The surface of the stirring container 1 is provided with scale marks.
Example 3
There is provided a condensate treatment process comprising at least the steps of:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
The mass ratio of the condensate to the reaction reagent is 4: 1.
the mass ratio of the condensate to water is 1: 4.
the stirring time of the step (3) is 48 h.
The reaction reagent is ammonium dihydrogen phosphate.
Use of a condensate treatment process, the use comprising: the device comprises a stirring container 1, a liquid level detector 2, a water control valve K1, an electric control valve K2 and a discharge valve K3; the water control valve K1, the electric control valve K2 and the liquid level detector 2 are connected in sequence; the liquid level detector 2 is arranged inside the stirring container 1; the discharge valve K3 is arranged at the bottom of the stirring container 1.
The surface of the stirring container 1 is provided with scale marks.
Example 4
There is provided a condensate treatment process comprising at least the steps of:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
The mass ratio of the condensate to the reaction reagent is 5: 1.
the mass ratio of the condensate to water is 1: 4.
the stirring time of the step (3) is 48 h.
The reaction reagent is ammonium dihydrogen phosphate.
Use of a condensate treatment process, the use comprising: the device comprises a stirring container 1, a liquid level detector 2, a water control valve K1, an electric control valve K2 and a discharge valve K3; the water control valve K1, the electric control valve K2 and the liquid level detector 2 are connected in sequence; the liquid level detector 2 is arranged inside the stirring container 1; the discharge valve K3 is arranged at the bottom of the stirring container 1.
The surface of the stirring container 1 is provided with scale marks.
Example 5
There is provided a condensate treatment process comprising at least the steps of:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
The mass ratio of the condensate to the reaction reagent is 0.5: 1.
the mass ratio of the condensate to water is 1: 4.
the stirring time of the step (3) is 48 h.
The reaction reagent is ammonium dihydrogen phosphate.
Use of a condensate treatment process, the use comprising: the device comprises a stirring container 1, a liquid level detector 2, a water control valve K1, an electric control valve K2 and a discharge valve K3; the water control valve K1, the electric control valve K2 and the liquid level detector 2 are connected in sequence; the liquid level detector 2 is arranged inside the stirring container 1; the discharge valve K3 is arranged at the bottom of the stirring container 1.
The surface of the stirring container 1 is provided with scale marks.
Example 6
There is provided a condensate treatment process comprising at least the steps of:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
The mass ratio of the condensate to the reaction reagent is 2: 1.
the mass ratio of the condensate to water is 1: 4.
the stirring time of the step (3) is 30 h.
The reaction reagent is ammonium dihydrogen phosphate.
Use of a condensate treatment process, the use comprising: the device comprises a stirring container 1, a liquid level detector 2, a water control valve K1, an electric control valve K2 and a discharge valve K3; the water control valve K1, the electric control valve K2 and the liquid level detector 2 are connected in sequence; the liquid level detector 2 is arranged inside the stirring container 1; the discharge valve K3 is arranged at the bottom of the stirring container 1.
The surface of the stirring container 1 is provided with scale marks.
Evaluation of Performance
And (3) testing the removal degree of the heavy metal: weighing 20g of phenolic resin, adding 2.23g of urea, dissolving at room temperature, adding 0.52g of melamine, mixing, and then placing in an oil bath kettle at 40 ℃ for refluxing until the new glue is completely clear to obtain a mixture 1. The condensate treatment from examples 1-6 was added dropwise to mixture 1, approximately 10g was added, 1g KH-550 was added, and mixed to give mixture 2.
The mixture 2 was taken up with a glass wool, placed in an oven at 90 ℃ for two hours and at 120 ℃ for 1 hour. The color change was observed and the test results are shown in table 1 below.
TABLE 1 test results
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (10)
1. A condensate treatment method, characterized in that the treatment method comprises at least the following steps:
(1) pouring the condensed material into a container;
(2) adding water into the step (1);
(3) and (3) adding a reaction reagent into the step (2), stirring and filtering to obtain the catalyst.
2. The condensate treatment method according to claim 1, wherein the mass ratio of the condensate to the reaction reagent is (1-4): 1.
3. the condensate treatment method according to claim 2, wherein the mass ratio of the condensate to the reaction reagent is (1.5-3): 1.
4. the condensate treatment method according to claim 1, wherein the mass ratio of the condensate to water is 1: (2-6).
5. The condensate treatment method according to claim 1, wherein the stirring time in the step (3) is 40-55 h.
6. The condensate treatment method according to claim 5, wherein the stirring time in the step (3) is 35-50 h.
7. The condensate treatment method according to claim 1, wherein the reactant is one or more selected from the group consisting of ammonium dihydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, ammonium hydrogen phosphate, sodium hydrogen phosphate, potassium hydrogen phosphate, ammonium dibasic phosphate, sodium dibasic phosphate, potassium dibasic phosphate, ammonium dibasic phosphate, sodium phosphate, and potassium phosphate.
8. A condensate treatment method according to claim 1 or 7, characterized in that the reactant is ammonium dihydrogen phosphate.
9. Use of a method according to any of claims 1-8, characterized in that it comprises at least: the device comprises a stirring container (1), a liquid level detector (2), a water control valve (K1), an electric control valve (K2) and a discharge valve (K3); the water control valve (K1), the electric control valve (K2) and the liquid level detector (2) are connected in sequence; the liquid level detector (2) is arranged inside the stirring container (1); the discharge valve (K3) is arranged at the bottom of the stirring container (1).
10. Use of a method according to claim 9, characterized in that the surface of the stirred vessel (1) is provided with graduation marks (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010735722.7A CN111842432A (en) | 2020-07-28 | 2020-07-28 | Condensate treatment method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010735722.7A CN111842432A (en) | 2020-07-28 | 2020-07-28 | Condensate treatment method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111842432A true CN111842432A (en) | 2020-10-30 |
Family
ID=72947800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010735722.7A Pending CN111842432A (en) | 2020-07-28 | 2020-07-28 | Condensate treatment method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111842432A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761623A (en) * | 2003-01-31 | 2006-04-19 | 出光兴产株式会社 | Method for treating waste water containing hardly decomposable harmful substances |
| CN103833123A (en) * | 2014-02-21 | 2014-06-04 | 陈瀚翔 | Method for treating complexed chemical nickel electroplating wastewater |
| CN204958615U (en) * | 2015-09-23 | 2016-01-13 | 张家港市清泉水处理有限公司 | Electroplate waste water's processing system |
| CN107835792A (en) * | 2015-09-30 | 2018-03-23 | 栗田工业株式会社 | Metallic pollution preventing agent, metallic pollution prevent film, metallic pollution prevention method and cleansing article method |
| CN109019817A (en) * | 2018-08-16 | 2018-12-18 | 正坚建设有限公司 | A kind of municipal wastewater processing unit and its application method |
| CN208500671U (en) * | 2018-05-25 | 2019-02-15 | 华润三九（枣庄）药业有限公司 | A kind of automatic medicine adding apparatus and the sewage disposal system using the device |
| JP6519906B2 (en) * | 2013-06-10 | 2019-05-29 | 住友大阪セメント株式会社 | Chlorine-containing waste disposal method |
| CN110144467A (en) * | 2019-07-05 | 2019-08-20 | 长沙紫宸科技开发有限公司 | A kind of arsenic alkaline slag resource utilization device and method thereof |
-
2020
- 2020-07-28 CN CN202010735722.7A patent/CN111842432A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761623A (en) * | 2003-01-31 | 2006-04-19 | 出光兴产株式会社 | Method for treating waste water containing hardly decomposable harmful substances |
| JP6519906B2 (en) * | 2013-06-10 | 2019-05-29 | 住友大阪セメント株式会社 | Chlorine-containing waste disposal method |
| CN103833123A (en) * | 2014-02-21 | 2014-06-04 | 陈瀚翔 | Method for treating complexed chemical nickel electroplating wastewater |
| CN204958615U (en) * | 2015-09-23 | 2016-01-13 | 张家港市清泉水处理有限公司 | Electroplate waste water's processing system |
| CN107835792A (en) * | 2015-09-30 | 2018-03-23 | 栗田工业株式会社 | Metallic pollution preventing agent, metallic pollution prevent film, metallic pollution prevention method and cleansing article method |
| CN208500671U (en) * | 2018-05-25 | 2019-02-15 | 华润三九（枣庄）药业有限公司 | A kind of automatic medicine adding apparatus and the sewage disposal system using the device |
| CN109019817A (en) * | 2018-08-16 | 2018-12-18 | 正坚建设有限公司 | A kind of municipal wastewater processing unit and its application method |
| CN110144467A (en) * | 2019-07-05 | 2019-08-20 | 长沙紫宸科技开发有限公司 | A kind of arsenic alkaline slag resource utilization device and method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 中国材料研究学会: "《中国战略性新兴产业 新材料 环境工程材料》", 30 November 2018, 中国铁道出版社 * |
| 陈昆柏等: "《固体废物环境管理丛书 危险废物处理与处置》", 31 May 2017, 河南科学技术出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Szabó et al. | Significance of design and operational variables in chemical phosphorus removal | |
| CN102531233B (en) | Heavy-metal-containing electroplating wastewater treatment and heavy metal recycling method | |
| Pandey et al. | Treatment of biologically treated distillery effluent-a case study | |
| CN105217869B (en) | The method of resource of spent acid a kind of generated in flue gas during smelting Sulphuric acid | |
| CN103482650B (en) | Equipment and the production method of Neutral ammonium fluoride or ammonium bifluoride is prepared by silicofluoric acid and liquefied ammonia | |
| US5271848A (en) | Treating of waste water with bauxite to remove phosphates from the waste water | |
| Uysal et al. | Recovery of nutrients from digested sludge as struvite with a combination process of acid hydrolysis and Donnan dialysis | |
| Banu et al. | Effect of ferrous sulphate on nitrification during simultaneous phosphorus removal from domestic wastewater using a laboratory scale anoxic/oxic reactor | |
| Basri et al. | Aluminium recovery from water treatment sludge under different dosage of sulphuric acid | |
| CN111470601A (en) | Method for preparing flocculant by utilizing cold-rolled oil sludge | |
| CN106477774A (en) | A kind of processing method of chemical nickle-plating wastewater | |
| Tunçal | Improving Thermal Dewatering Characteristics of Mechanically Dewatered Sludge: Response Surface Analysis of Combined Lime‐Heat Treatment | |
| CN111842432A (en) | Condensate treatment method and device | |
| Higgins et al. | Combined removal of Cr, Cd, and Ni from wastes | |
| WO2008136002A2 (en) | Method and system for measuring and/or controlling total dissolved solids and total suspended solids in aqueous liquid compositions | |
| Jang et al. | Denitrification of simulated nitrate-rich wastewater using sulfamic acid and zinc scrap | |
| Uysal et al. | Phosphorus recovery from hydrolysed sewage sludge liquid containing metals using Donnan dialysis | |
| Zhu et al. | Extraction of ammonia from solutions with D2EHPA in three diluents: extraction equilibria and modeling | |
| CN106540651B (en) | A method of dephosphorization material is prepared using microwave heating technique modified sediment | |
| Qudus et al. | Emulsion liquid membrane for lead removal: intensified low shear extraction | |
| CN109289726A (en) | A kind of curing method of serious pollution liquid | |
| Yatim et al. | Removing copper, chromium and nickel in industrial effluent using hydroxide precipitation versus sulphide precipitation | |
| Houser | Semimicro determination of COD employing microwave digestion | |
| CN109231742A (en) | A kind of processing method of acid sludge | |
| CN108726777A (en) | Chrome waste liquid treatment process |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |