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Novel application of solid ammonium sulfate and calcium carbonate reaction in water ammonia nitrogen treatment

A technology of calcium carbonate and ammonium sulfate, applied in water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of poor effect and high cost, and achieve the reduction of ammonia nitrogen content, low cost and mild conditions Effect

Inactive Publication Date: 2018-02-16
山西师范大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high cost and poor effect of the existing chemical treatment method of ammonia nitrogen in water body, the present invention provides a new application of solid ammonium sulfate calcium carbonate reaction in the treatment of ammonia nitrogen in water body

Method used

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  • Novel application of solid ammonium sulfate and calcium carbonate reaction in water ammonia nitrogen treatment
  • Novel application of solid ammonium sulfate and calcium carbonate reaction in water ammonia nitrogen treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Accurately weigh 50g of calcium carbonate and 15g of ammonium sulfate and mix them in a three-necked flask with a specification of 250ml. Connect a separatory funnel with a specification of 50ml and 2 / 3 water at the 1st port, and connect a constant temperature electric stirrer at the 2nd port, and drip water while Stir, let it fully react at room temperature, connect the catheter at the 3 port to export the reaction gas, and introduce the gas into the clarified lime water, the lime water becomes turbid, which proves that carbon dioxide gas is produced, put the wet red test paper on the catheter port, the test paper becomes Blue, proving that ammonia gas is produced. The reaction equation is as follows:

[0017]

Embodiment 2

[0019] Accurately weigh 50g of calcium carbonate and 15g of ammonium sulfate and mix them in a 200ml beaker, stir with a constant temperature stirrer, spray water while stirring, ensure that the stirring speed is 350r / min and the temperature is 45°C, and record the reaction within 5h. amount of gas. The reaction analysis data of different time periods are shown in Table 1.

[0020] Table 1 Analysis data of different time periods

[0021] time h

[0022] The solid-liquid reaction of ammonium sulfate calcium carbonate will stop the reaction quickly due to the package of calcium sulfate. The above reaction data show that if there is friction between solids, the reaction can always be carried out. With the increase of reaction time, the degree of reaction increases. If the conditions required for the reaction are guaranteed, the reaction degree and the reaction time are basically in a linear relationship.

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Abstract

The invention particularly relates to a novel application of a solid ammonium sulfate and calcium carbonate reaction in water ammonia nitrogen treatment and solves the problems that existing chemicaltreatment methods of ammonia nitrogen in water are high in cost and poor in effect. According to the novel application of the solid ammonium sulfate and calcium carbonate reaction in water ammonia nitrogen treatment, solid ammonium sulfate and solid calcium carbonate are subjected to a surface contact double decomposition reaction under proper stirring intensity and temperature conditions. To be specific, river revetments are paved with calcium carbonate stone, ammonia radical ions and sulfate radical ions in water react with calcium carbonate stone under the drying and wetting alternation condition to release ammonia to purify water in the long-term water flowing process. The novel application is applicable to water ecosystems with changeable water levels and heavier storms and has the advantages that the condition is mild, the cost is lower, operation is convenient and the like.

Description

technical field [0001] The invention belongs to the field of water body ecological restoration, in particular to a new application of solid ammonium sulfate calcium carbonate reaction in water body ammonia nitrogen treatment. Background technique [0002] In general chemistry, especially in the teaching of middle school chemistry, it is believed that ammonium sulfate solution and calcium carbonate can react. The reason is that ammonium sulfate is a salt of strong acid and weak base. Reactions to acidic substances. But as time goes on, the reaction terminates very quickly, because the generated calcium sulfate will be attached to the surface of calcium carbonate, preventing the reaction from proceeding, so the solid-liquid reaction between ammonium sulfate and calcium carbonate cannot go on well. . [0003] In recent years, chemical methods have played an increasingly important role in water pollution control. Chemical treatment of sewage involves removing dissolved or coll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58E02B3/14C02F101/16
CPCC02F1/586C02F2101/16E02B3/14
Inventor 刘二保王沛瑞薛冰纯张瑞英
Owner 山西师范大学
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