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Efficient harmless treatment composition for decontamination wastewater and use method thereof

A harmless treatment and composition technology, applied in chemical instruments and methods, reduced water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effect of reducing the content of available chlorine and promoting the reaction

Pending Publication Date: 2021-09-17
中国人民解放军陆军防化学院
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of this application is to provide a composition for the neutralization treatment of bleaching powder decontamination wastewater and its use method to solve at least one technical problem in the prior art

Method used

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  • Efficient harmless treatment composition for decontamination wastewater and use method thereof
  • Efficient harmless treatment composition for decontamination wastewater and use method thereof
  • Efficient harmless treatment composition for decontamination wastewater and use method thereof

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experiment example

[0027] plan 1

[0028] The measurement of the available chlorine content in the bleaching powder finely treated wastewater adopts the iodometric titration method.

[0029] The available chlorine content represents the amount of active ingredients contained in the oxidative chlorination agent, which means that the oxidative chlorination agent is equivalently converted into chlorine gas, and the amount of the chlorine gas is available chlorine, which can be represented by mass, concentration or percentage, and percentages are used below To represent.

[0030] During the determination of available chlorine by iodometric method, in the presence of excess KI, the active ingredient Ca(ClO) in bleaching powder 2 Can oxidize KI to I 2 , the available chlorine of the bleaching powder can be measured, and the reaction formula is as follows:

[0031] ClO - +2I - +2H + → I 2 +Cl - +H 2 O;

[0032] I 2 +2S 2 o 3 2- →2I - +S 4 o 6 2- ;

[0033] The formula for calculating...

Embodiment 1

[0100] Composition preparation, the Na 2 SO 3 、CH 3 COOH and deionized water are mixed at a mass ratio of 2:0.10:10 and fully dissolved to prepare the composition. Take the bleaching powder (1:8) solution prepared in Scheme 8, mix according to the volume ratio of the bleaching powder (1:8) solution and the composition at 5:2, record the reaction phenomenon, wait for the amount of white precipitate, no gas, no odor , after exothermic, centrifuge the mixture, take the supernatant to measure its pH and available chlorine.

Embodiment 2

[0102] Composition preparation, the Na 2 SO 3 、CH 3 COOH and deionized water are mixed at a mass ratio of 2:0.10:15 and fully dissolved to prepare the composition. Take the bleaching powder (1:8) solution prepared in Scheme 8, mix according to the volume ratio of the bleaching powder (1:8) solution and the composition is 5:2.8, record the reaction phenomenon, the white precipitate to be measured, no gas, no odor , after exothermic, centrifuge the mixture, take the supernatant to measure its pH and available chlorine.

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Abstract

The invention provides an efficient harmless treatment composition for decontamination wastewater and a use method thereof. The composition comprises the following components by weight: a main reactant, an auxiliary reactant and a solvent, wherein the main reactant adopts Na2SO3, the auxiliary reactant adopts one or more of CH3COOH, K2C2O4.H2O, (NH4)2Fe(SO4)2.6H2O and NaHSO3, the solvent adopts deionized water, and the mass ratio of the main reactant to the auxiliary reactant to the solvent is 1: (0.05-0.1): (5-7.5). According to the present invention, the rapid reaction can be performed, the content of the residual available chlorine in the solution is reduced, the reacted solution is neutral, the pypocholoride is promoted to be reduced into the chloride ions, the reaction of the main reactant and the auxiliary reactant with the residual available chlorine in the solution is effectively assisted and catalyzed, and the reaction is promoted.

Description

Technical field: [0001] The present application relates to the technical field of wastewater treatment, in particular to a composition for the efficient and harmless treatment of decontamination wastewater and a method for using the same. Background technique: [0002] At present, in the field of public safety, in order to meet the needs of public safety, detergents have been widely and widely used. Among them, the use of bleaching powder (also known as bleaching powder, Calcium hypochlorite) is the main one. Among the types, bleaching powder is widely used because of its quick effect and good specific decontamination effect. It can even be used as a targeted disinfectant in some special fields, such as when large quantities of radioactive substances are leaked. After the accompanying bleaching powder is widely used as a decontaminant, the main application carrier of bleaching powder is sodium hypochlorite or calcium hypochlorite. During use, its active ingredient is hydroly...

Claims

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Application Information

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IPC IPC(8): C02F1/70G01N31/16C02F101/12
CPCC02F1/70G01N31/16C02F2101/12
Inventor 田兴涛唐娜任丽君李江存党胜男王悦徐彩霞吴耀鑫
Owner 中国人民解放军陆军防化学院
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