Preparation method of novel bromine-containing disinfectant

Abstract

The invention discloses a novel bromine-containing disinfectant preparation method, which comprises: 1, respectively adding 95T and 90T formulas into swimming pool water, and setting a BCDMH disinfectant used in a control group; 2, the ORP value is monitored every 12 hours; 3, measuring the concentration of chloramine (total chlorine-free chlorine) and the concentration of bromo-library every 12 hours; 4, measuring the TDS concentration in the water every 12 hours; and step 5, observing and comparing chromophore dragging durations in the dissolving process of the bromine, the iodine and the chlorine in water within 30cm away from the swimming pool main row, and forming a more effective disinfection environment under the combined action of the bromine, the iodine and the chlorine. The halogen compounds are reasonably proportioned, so that the efficient disinfection capability of the water body can be maintained, and the formation of chloramine can be remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment and disinfection, and in particular to a method for preparing a novel bromine-containing disinfectant. Background Art

[0002] The disinfectants currently used in the market are mainly based on chlorine, but chlorine reacts with ammonia nitrogen to form chloramines, which are irritating and may cause carcinogenic risks under certain conditions. In contrast, bromines formed by the reaction of bromine and ammonia nitrogen do not have such adverse effects. At the same time, the regeneration cost of chlorine is high, while bromine is more economical through recycling in the "bromine library".

[0003] In water treatment environments such as swimming pools, chloramines are easily produced during the use of a single chlorine disinfectant, resulting in poor water quality and affecting user experience. The present invention aims to provide a composite disinfection system based on bromine, iodine and chlorine, which uses the concept of "bromine library" to accelerate dissolution through an effervescent formula, improve water quality and increase disinfection efficiency, while iodine leaves a disinfection taste signal in the water, further enhancing the disinfection effect and improving user confidence.

[0004] Bromine and iodine are both halogens with larger molecular weights than chlorine. At the same time, the reddish brown of bromine and the dark purple of iodine will appear darker than chlorine after being activated by chlorine in swimming pool water. The effervescent agent accelerates the dissolution and diffusion of the disinfectant and reduces the chromophore phenomenon of bromine and iodine during the disinfection process. Therefore, in view of this, the existing structure is studied and improved to provide a new method for preparing a bromine-containing disinfectant, in order to achieve a more practical purpose. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention discloses a novel method for preparing a bromine-containing disinfectant, comprising the following steps: Step 1: Add 95T and 90T formulas to the swimming pool water respectively, and set the control group to use BCDMH disinfectant; Step 2: Monitor ORP value every 12 hours; Step 3: Measure chloramine (total chlorine - free chlorine) concentration and bromine pool concentration every 12 hours; Step 4: Measure the TDS concentration in the water every 12 hours; Step 5: Observe and compare the dragging time of the three chromophores during their dissolution process in water within 30 cm from the main row of the swimming pool.

[0006] As a preferred technical solution of the present invention, it includes 95T formula and 90T formula, and the 95T formula and 90T formula both include BCDMH (bromochlorodimethylhydantoin), TCCA (trichloroisocyanuric acid), bromine salt (sodium bromide), iodine salt (potassium iodide) and effervescent agent.

[0007] As a preferred technical solution of the present invention, the 95T formula is: BCDMH (bromochlorodimethylhydantoin): 10% (0.0-25%) TCCA (Trichloroisocyanuric acid): 20% (15-30%) Bromine salt (sodium bromide): 10% (5-15%) Iodized salt (potassium iodide): 1% (0.1-10%) Effervescent: 59% (30-65%).

[0008] As a preferred technical solution of the present invention, the 90T formula is: BCDMH (bromochlorodimethylhydantoin): 10% (0.0-25%) SDIC: 50% (50-60%) Bromine salt: 10% (5-15%) Iodized salt: 1% (0.1-5%) Effervescent: 29% (30-40%).

[0009] As a preferred technical solution of the present invention, the experimental instruments include: a pH meter, an ORP oxidation-reduction potential meter, a digital DPD absorbance free chlorine and total chlorine meter, a TDS total dissolved solids meter and a water temperature meter.

[0010] As a preferred technical solution of the present invention, the experimental environment 1: Experimental water volume: 400 cubic meters of public swimming pool Water temperature: 27°C pH: 7.5 Load: about 1 person / ton / day Total halogen as free residual chlorine: 0.5ppm ORP:mv Chloramine Bromine Library TDS: ppm Chroma duration: minutes Bromine library measurement uses DPD to infer the color development characteristics of chloramine and bromine.

[0011] As a preferred technical solution of the present invention, the experimental environment 2 is: Experimental water volume: 100 cubic meters of family swimming pool Water temperature: 28°C pH: 7.8 Person load: about 0.03 person / ton.day Total halogen as free residual chlorine: 0.5ppm ORP:mv Chloramine Bromine Library TDS: ppm Chroma duration: minutes Bromine library measurement uses DPD to infer the color development characteristics of chloramine and bromine.

[0012] As a preferred technical solution of the present invention, the experimental environment three: Experimental water volume: 2 cubic meters massage pool Water temperature: 37°C pH: 7.8 Person load: about 5 people / ton / day Total halogen as free residual chlorine: 0.5ppm ORP:mv Chloramine Bromine Library TDS: ppm Chroma duration: minutes Bromine library measurement uses DPD to infer the color development characteristics of chloramine and bromine The beneficial effects of the present invention are: The present invention protects a novel halogen disinfection formula, comprising a specific ratio of BCDMH, bromine salt, iodine salt, TCCA or SDIC and effervescent agent; The present invention protects the bromine reservoir and chlorine to form a circulating disinfection system, which effectively reduces the generation of chloramines and improves water quality safety; The invention provides technical innovation of the protected effervescent formula in improving the dissolution rate and reducing the chromophore phenomenon, and has high practical value. DETAILED DESCRIPTION

[0013] The following is a description of the preferred embodiments of the present invention. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0014] Embodiment: A novel method for preparing a bromine-containing disinfectant according to the present invention comprises the following steps: Step 1: Add 95T and 90T formulas to the swimming pool water respectively, and set the control group to use BCDMH disinfectant; Step 2: Monitor ORP value every 12 hours; Step 3: Measure chloramine (total chlorine - free chlorine) concentration and bromine pool concentration every 12 hours; Step 4: Measure the TDS concentration in the water every 12 hours; Step 5: Observe and compare the dragging time of the three chromophores during their dissolution process in water within 30 cm from the main row of the swimming pool.

[0015] The invention comprises a 95T formula and a 90T formula, wherein the 95T formula and the 90T formula both comprise BCDMH (bromochlorodimethylhydantoin), TCCA (trichloroisocyanuric acid), bromine salt (sodium bromide), iodine salt (potassium iodide) and an effervescent agent.

[0016] Wherein, the 95T formula is: BCDMH (bromochlorodimethylhydantoin): 10% (0.0-25%) TCCA (Trichloroisocyanuric acid): 20% (15-30%) Bromine salt (sodium bromide): 10% (5-15%) Iodized salt (potassium iodide): 1% (0.1-10%) Effervescent: 59% (30-65%).

[0017] Wherein, the 90T formula is: BCDMH (bromochlorodimethylhydantoin): 10% (0.0-25%) SDIC: 50% (50-60%) Bromine salt: 10% (5-15%) Iodized salt: 1% (0.1-5%) Effervescent: 29% (30-40%).

[0018] The experimental instruments include: pH meter, ORP oxidation-reduction potential meter, digital DPD absorbance free chlorine and total chlorine meter, TDS total dissolved solids meter and water temperature meter.

[0019] Among them, the experimental environment 1: Experimental water volume: 400 cubic meters of public swimming pool Water temperature: 27°C pH: 7.5 Load: about 1 person / ton / day Total halogen as free residual chlorine: 0.5ppm ORP:mv Chloramine Bromine Library TDS: ppm Chroma duration: minutes Bromine library measurement uses DPD to infer the color development characteristics of chloramine and bromine.

[0020] Among them, the experimental environment 2: Experimental water volume: 100 cubic meters of family swimming pool Water temperature: 28°C pH: 7.8 Person load: about 0.03 person / ton.day Total halogen as free residual chlorine: 0.5ppm ORP:mv Chloramine Bromine Library TDS: ppm Chroma duration: minutes Bromine library measurement uses DPD to infer the color development characteristics of chloramine and bromine.

[0021] Test data 1

[0022] Test data 2

[0023] Test data 3

[0024] In summary: 1. ORP enhancement: Under the same conditions, the ORP of the 95T and 90T formulations is on average about 10mV higher than that of BCDMH, indicating a stronger disinfection effect.

[0025] 2. The amount of chloramine generated is similar to that of BCDMH, which further verifies that bromide salts as the source of bromine pool can replace the bromine pool accumulation of BCDMH and can greatly reduce costs.

[0026] 3. Bromine pool accumulation effect: Experiments have shown that the bromine pool concentration can be stabilized at above 2-3ppm within 12 hours, indicating that the 95T and 90T formulas can achieve effective recycling of the bromine pool.

[0027] 4. Reduction of TDS accumulation: Under the same disinfection effect, the TDS accumulation of the new formula is not significantly higher than BCDMH, and there is no additional pollution risk to the water body.

[0028] 5. Under the same conditions, the dissolution time of 95T and 90T formulas is 100 minutes shorter than that of BCDMH on average, indicating that the visible time of bromine and iodine chromophores in the swimming pool is shortened by more than 100 minutes.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel method for preparing a bromine-containing disinfectant, characterized in that: It includes the following steps: Step 1: Add 95T and 90T formulas to the swimming pool water respectively, and set the control group to use BCDMH disinfectant; Step 2: Monitor ORP value every 12 hours; Step 3: Measure chloramine (total chlorine - free chlorine) concentration and bromine pool concentration every 12 hours; Step 4: Measure the TDS concentration in the water every 12 hours; Step 5: Observe and compare the dragging time of the chromophores of the three substances during their dissolution process in water within 30 cm from the main row of the swimming pool.

2. A method for preparing a novel bromine-containing disinfectant according to claim 1, characterized in that: The invention comprises a 95T formula and a 90T formula, wherein the 95T formula and the 90T formula both comprise BCDMH (bromochlorodimethylhydantoin), TCCA (trichloroisocyanuric acid), bromine salt (sodium bromide), iodine salt (potassium iodide) and an effervescent agent.

3. A novel method for preparing a bromine-containing disinfectant according to claim 1, characterized in that: The 95T formula: BCDMH (bromochlorodimethylhydantoin): 10% (0.0-25%) TCCA (Trichloroisocyanuric acid): 20% (15-30%) Bromine salt (sodium bromide): 10% (5-15%) Iodized salt (potassium iodide): 1% (0.1-10%) Effervescent: 59% (30-65%).

4. A method for preparing a novel bromine-containing disinfectant according to claim 1, characterized in that: The 90T formula: BCDMH (bromochlorodimethylhydantoin): 10% (0.0-25%) SDIC: 50% (50-60%) Bromine salt: 10% (5-15%) Iodized salt: 1% (0.1-5%) Effervescent: 29% (30-40%).

5. A method for preparing a novel bromine-containing disinfectant according to claim 1, characterized in that: The experimental instruments include: a pH meter, an ORP oxidation-reduction potential meter, a digital DPD absorbance free chlorine and total chlorine meter, a TDS total dissolved solids meter and a water temperature meter.

6. A method for preparing a novel bromine-containing disinfectant according to claim 1, characterized in that: The experimental environment 1: Experimental water volume: 400 cubic meters of public swimming pool Water temperature: 27°C pH: 7.5 Load: about 1 person / ton / day Total halogen as free residual chlorine: 0.5ppm ORP:mv Chloramine Bromine Library TDS: ppm Chroma duration: minutes Bromine library measurement uses DPD to infer the color development characteristics of chloramine and bromine.

7. A method for preparing a novel bromine-containing disinfectant according to claim 1, characterized in that: The experimental environment 2: Experimental water volume: 100 cubic meters of family swimming pool Water temperature: 28°C pH: 7.8 Person load: about 0.03 person / ton.day Total halogen as free residual chlorine: 0.5ppm ORP:mv Chloramine Bromine Library TDS: ppm Chroma duration: minutes Bromine library measurement uses DPD to infer the color development characteristics of chloramine and bromine.

8. A method for preparing a novel bromine-containing disinfectant according to claim 1, characterized in that: The experimental environment three: Experimental water volume: 2 cubic meters massage pool Water temperature: 37°C pH: 7.8 Person load: about 5 people / ton / day Total halogen as free residual chlorine: 0.5ppm ORP:mv Chloramine Bromine Library TDS: ppm Chroma duration: minutes Bromine library measurement uses DPD to infer the color development characteristics of chloramine and bromine.

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