阅读说明：本技术 一种聚合硫酸铜铁无机复合净水剂及其制备方法和应用 (Polymeric copper sulfate and iron inorganic composite water purifying agent and preparation method and application thereof ) 是由 刘海龙 张翔 于 2019-10-16 设计创作，主要内容包括：本发明公开了一种聚合硫酸铜铁无机复合净水剂及其制备方法和应用。所述聚合硫酸铜铁无机复合净水剂,其特征在于：包括铜铁离子的聚合物,铁离子和铜离子的有效金属离子的质量浓度之和为7.42-12.12g/L,铜离子和铁离子的摩尔比为0.02-0.05∶1。聚合硫酸铜铁无机复合净水剂的制备方法是以硫酸铁、五水合硫酸铜、过氧化氢以及碳酸钠为原料,通过将碳酸钠和硫酸铜加入到一定比例的硫酸铁溶液中共聚的预聚合方法合成,具有工艺简洁、经济和快速等特点；所得净水剂具有稳定性高、对胶体物质的吸附架桥能力强、混凝效果好、以及强化后续处理等优点,相同投加量下对浊度及有机物的去除率均较高,水处理效果良好。(The invention discloses a polymeric copper sulfate iron inorganic composite water purifying agent, a preparation method and application thereof. The polymeric copper sulfate iron inorganic composite water purifying agent is characterized in that: the polymer comprises copper and iron ions, the sum of the mass concentration of the iron ions and the effective metal ions of the copper ions is 7.42-12.12g/L, and the molar ratio of the copper ions to the iron ions is 0.02-0.05: 1. The preparation method of the polymeric copper sulfate iron inorganic composite water purifying agent takes ferric sulfate, copper sulfate pentahydrate, hydrogen peroxide and sodium carbonate as raw materials, and is synthesized by a prepolymerization method of adding sodium carbonate and copper sulfate into a ferric sulfate solution with a certain proportion for copolymerization, and the polymeric copper sulfate iron inorganic composite water purifying agent has the characteristics of simple process, economy, quickness and the like; the obtained water purifying agent has the advantages of high stability, strong adsorption and bridging capacity on colloidal substances, good coagulation effect, strengthened subsequent treatment and the like, and has higher turbidity and removal rate of organic matters and good water treatment effect under the same dosage.)

1. A polymeric copper sulfate iron inorganic composite water purifying agent is characterized in that: a polymer comprising copper iron ions, the copper ions being provided by copper sulphate pentahydrate, copper chloride or copper nitrate, the iron ions being provided by iron sulphate; the sum of the mass concentration of the effective metal ions of the iron ions and the copper ions is 7.42-12.12g/L, and the molar ratio of the copper ions to the iron ions is 0.02-0.05: 1.

2. The preparation method of the polymeric copper sulfate iron inorganic composite water purifying agent of claim 1 is characterized by comprising the following steps:

(1) dissolving ferric sulfate in deionized water to obtain a ferric sulfate solution with the concentration of 0.05-0.25 mol/L;

(2) stirring under the condition of water bath heating, adding a sodium carbonate solution into the ferric sulfate solution obtained in the step (1) to obtain polymeric ferric sulfate, wherein the alkalization degree is 0.5-1.5, and continuously stirring for 24 hours;

(3) preparing a copper ion solution, and adjusting the pH value to be consistent with the polymeric ferric sulfate in the step (2);

(4) preparing a hydrogen peroxide solution with the volume percentage of 0.5%, and adjusting the pH value to be consistent with the polymeric ferric sulfate in the step (2);

(5) stirring under the condition of water bath heating, dripping the hydrogen peroxide solution in the step (4) into the polymeric ferric sulfate in the step (2), and sealing and stirring for 30-60 min;

(6) stirring under the condition of water bath heating, slowly dripping the copper sulfate solution in the step (3) into the polymeric ferric sulfate in the step (5) until the molar ratio of copper ions to iron ions is 0.02-0.05: 1, continuously heating until the solution is clear and transparent, and continuously stirring for 24 hours.

3. The method for preparing the polymeric copper sulfate iron inorganic composite water purifying agent according to claim 2, wherein in the steps (2) and (5), the temperature is maintained at 30 ~ 65 ℃ by heating in water bath.

4. The preparation method of the polymeric copper sulfate iron inorganic composite water purifying agent according to claim 2, wherein the dropping speed of the sodium carbonate solution in the step (2) is 0.5 ~ 1 mL/min;

in the step (5), the dropping speed of the hydrogen peroxide solution is 0.5 ~ 1 mL/min;

the dropping speed of the copper sulfate in the step (6) is 0.25 ~ 0.5.5 mL/min.

5. The method for preparing the polymeric copper sulfate iron inorganic composite water purifying agent according to claim 2, characterized in that: in the step (3), the copper ion solution comprises a copper ion solution prepared from copper sulfate pentahydrate, copper chloride or copper nitrate; the concentration of the prepared copper ion solution is 0.05-0.15 mol/L.

6. The method for preparing the polymeric copper sulfate iron inorganic composite water purifying agent according to claim 2, characterized in that the sodium carbonate solution in the step (2) is 0.05-0.15mol/L, and the dropping time is 75 ~ 250 min.

7. The method for preparing the polymeric copper sulfate iron inorganic composite water purifying agent according to claim 2, characterized in that: in the step (3), 0.1mol/L sodium hydroxide solution was used for pH adjustment.

8. The method for preparing the polymeric copper sulfate iron inorganic composite water purifying agent according to claim 2, characterized in that: in the step (4), a 0.1mol/L sulfuric acid solution is used for adjusting the pH.

9. The method for preparing the polymeric copper sulfate and iron inorganic composite water purifying agent according to claim 2, wherein the stirring speed is 300 ~ 500rpm during the stirring process.

10. The use of the polymeric copper iron sulfate inorganic composite water purifying agent of claim 1 in domestic sewage treatment, wherein the polymeric copper iron sulfate inorganic composite water purifying agent is added in an amount of 5 ~ 90mg/L, and the applicable pH range is 5.5 ~ 9.

Technical Field

The invention relates to a polymeric copper sulfate iron inorganic composite water purifying agent, a preparation method and application thereof, belonging to the technical field of environment and chemistry.

Background

In order to deal With The problem, copper ions are introduced into The coagulant as Bacteriostatic agents (Michels, h., Moran, w. and Michel, j. (2008) Antimicrobial Properties sewage Surfaces, With a great amount of copper ions, With a great amount of Antimicrobial activity, so that The Bacteriostatic effects of copper ions in The coagulant are not really caused by The inhibition of The release of copper ions in The case of environmental pollution of copper sludge (2+), Zn 6332 (2) and c. and Cao, x. (2012) Antimicrobial effects of copper ions in cement slurries, which are widely used in sewage treatment, sewage sludge treatment, sewage.

Disclosure of Invention

The invention aims to provide a polymeric copper sulfate iron inorganic composite water purifying agent, a preparation method and application thereof.

The invention provides a polymeric copper sulfate iron inorganic composite water purifying agent, which comprises a polymer of copper iron ions, wherein the copper ions are provided by copper sulfate pentahydrate, copper chloride or copper nitrate, and the iron ions are provided by ferric sulfate. The sum of the mass concentration of the effective metal ions of the iron ions and the copper ions is 7.42-12.12g/L, and the molar ratio of the copper ions to the iron ions is 0.02-0.05: 1.

The invention provides a preparation method of the polymeric copper sulfate iron inorganic composite water purifying agent, which comprises the following steps:

(1) dissolving ferric sulfate in deionized water to obtain ferric sulfate solution (the concentration is 0.05-0.25 mol/L);

(2) stirring under the condition of water bath heating, adding a sodium carbonate solution into the ferric sulfate solution obtained in the step (1) to obtain polymeric ferric sulfate, wherein the alkalization degree is 0.5-1.5, and continuously stirring for 24 hours;

(3) preparing a copper ion solution, and adjusting the pH value to be consistent with the polymeric ferric sulfate in the step (2);

(4) preparing 0.5% (volume percentage) of hydrogen peroxide solution, and adjusting the pH value to be consistent with the polymeric ferric sulfate in the step (2);

(5) stirring under the condition of water bath heating, dripping the hydrogen peroxide solution in the step (4) into the polymeric ferric sulfate in the step (2), and sealing and stirring for 30-60 min;

(6) stirring under the condition of water bath heating, slowly dripping the copper sulfate solution in the step (3) into the polymeric ferric sulfate in the step (5) until the molar ratio of copper ions to iron ions is (0.02-0.05: 1), continuously heating until the solution is clear and transparent, and continuously stirring for 24 hours.

Further, steps (2) and (5) also include maintaining the ferric sulfate and polymeric ferric sulfate solution at 30 ~ 65 ℃ by heating in a water bath.

Further, the dropping speed of the sodium carbonate solution in the step (2) is 0.5 ~ 1mL/min, the dropping speed of the hydrogen peroxide solution in the step (5) is 0.5 ~ 1mL/min, and the dropping speed of the copper sulfate in the step (6) is 0.25 ~ 0.5.5 mL/min.

Further, in the step (3), the copper ion solution includes a copper ion solution prepared from copper sulfate pentahydrate, copper chloride or copper nitrate. The concentration of the prepared copper ion solution is 0.05-0.15 mol/L.

Further, the sodium carbonate solution used in the step (2) is 0.05-0.15mol/L, and the dropping time is 75 ~ 250 min.

Further, 0.1mol/L sodium hydroxide solution was used for pH adjustment in the step (3).

Further, the pH is adjusted in the step (4) by using a 0.1mol/L sulfuric acid solution.

Further, the stirring speed was 300 ~ 500 rpm.

The invention provides application of the polymeric copper ferric sulfate inorganic composite water purifying agent, which is characterized in that the polymeric copper ferric sulfate inorganic composite water purifying agent is applied to domestic sewage treatment, the adding amount of the polymeric copper ferric sulfate inorganic composite water purifying agent is 5 ~ 90mg/L, and the applicable pH range is 5.5 ~ 9.

The invention has the beneficial effects that:

(1) the preparation method of the polymeric copper sulfate iron inorganic composite water purifying agent takes ferric sulfate, copper sulfate pentahydrate, hydrogen peroxide and sodium carbonate as raw materials, and is synthesized by a prepolymerization method of adding the sodium carbonate and the copper sulfate into a ferric sulfate solution with a certain proportion for copolymerization, and the polymeric copper sulfate iron inorganic composite water purifying agent has the characteristics of indirect process, economy, rapidness and the like;

(2) the water purifying agent prepared by the method has the advantages of high stability, strong adsorption and bridging capacity on colloidal substances, good coagulation effect, strengthened subsequent treatment and the like, has higher removal rate on turbidity and organic matters under the same dosage, and has good water treatment effect;

(3) copper ions are introduced in the preparation process and used as disinfection factors to reduce the number of microorganisms in the sediment and slow down the release of bottom mud; the low concentration of copper ions in the settled water promotes the nitrification and denitrification reactions.

Detailed Description

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, and operations, but do not preclude the presence or addition of one or more other features, integers, steps, and operations.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In order to facilitate understanding of the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples, and each embodiment is not to be construed as limiting the embodiments of the present invention.

The invention provides a polymeric copper sulfate and iron inorganic composite water purifying agent, which is characterized in that the water purifying agent is an orange red transparent solution, the sum of the mass concentration of effective metal ions of iron ions and copper ions is 7.42-12.12g/L, and the molar ratio of the copper ions to the iron ions is 0.02-0.05.

A preparation method of a polymeric copper sulfate iron inorganic composite water purifying agent is characterized by comprising the following steps:

(1) dissolving ferric sulfate in deionized water to obtain a ferric sulfate solution;

(2) stirring under the condition of water bath heating, slowly dripping a sodium carbonate solution into the ferric sulfate solution obtained in the step (1) to obtain polymeric ferric sulfate, wherein the alkalization degree is 0.5-1.5, and continuously stirring for 24 hours;

(3) dissolving copper sulfate by using deionized water, and adjusting the pH value to be consistent with the polymeric ferric sulfate in the step (2);

(4) preparing 0.5% hydrogen peroxide solution, and adjusting the pH value to be consistent with the polymeric ferric sulfate in the step (2);

(5) stirring under the condition of water bath heating, dripping the hydrogen peroxide solution in the step (4) into the polymeric ferric sulfate in the step (2), and sealing and stirring for 30-60 min.

(6) And (3) strongly stirring under the condition of heating in a water bath, dripping the copper sulfate solution in the step (3) into the polymeric ferric sulfate in the step (2) until the molar ratio of copper ions to iron ions is (0.02-0.05: 1), continuously heating until the solution is clear and transparent, and continuously stirring for 24 hours.

Preferably, the steps (1) and (5) further comprise the step of keeping the ferric sulfate and the polymeric ferric sulfate solution at 30 ~ ℃ by heating in a water bath, preferably, the dropping speed of the sodium carbonate and copper sulfate solution in the steps (1) and (5) is 0.5 ~ mL/min, preferably, the step (3) can be used for preparing copper ion solution by using copper chloride, copper nitrate and the like in addition to copper sulfate pentahydrate, preferably, the alkalization degree in the step (2) is 0.5-1.5, preferably, the sodium carbonate solution used in the step (2) is 0.05-0.15mol/L, preferably, the pH adjusting in the step (3) is 0.1mol/L sodium hydroxide solution, preferably, the pH adjusting in the step (4) is 0.1mol/L sulfuric acid solution, preferably, the step (3) is used for preparing copper sulfate pentahydrate solution, the concentration is 0.05-0.15mol/L, preferably, the pH adjusting in the step (4) is 0.1mol/L sulfuric acid solution, the step (4) is preferably, the step (3) is used for preparing the solution is 0.5) for preparing the inorganic sulfate solution, the concentration is 0.05-0.15mol/L, the adding speed of the inorganic sulfate solution is 300 mg/L, the inorganic sulfate is suitable for the adding speed of the inorganic copper sulfate is 300, and the adding speed of the inorganic copper sulfate is suitable for the inorganic water purifying agent is.