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Strong-basicity wastewater treatment method

A wastewater treatment and strong alkaline technology, applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control, etc., can solve problems such as acid or lye splashing, system temperature rise, and huge heat release , to achieve the effect of reducing risk, high stability and high safety factor

Inactive Publication Date: 2019-01-01
苏州爱源环境科技有限公司
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Problems solved by technology

However, since the acid-base neutralization reaction is an exothermic reaction, a huge amount of heat will be released
In addition, the basic temperature of strong alkaline wastewater is often relatively high (over 30°C), so the temperature of the system is likely to rise rapidly during the neutralization reaction, resulting in the danger of acid or lye splashing, which increases the risk of safety accidents risk

Method used

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  • Strong-basicity wastewater treatment method

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Embodiment Construction

[0026] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These accompanying drawings are all simplified schematic diagrams, and only illustrate the basic process of the present invention in a schematic manner, so it only shows the structures related to the present invention.

[0027] Such as figure 1 Shown, a kind of strongly alkaline wastewater treatment method comprises the following steps:

[0028] (1) Strong alkaline wastewater is stored in a strong alkaline wastewater storage tank with a pH of 14.2 and a temperature of 30°C; the dilution water is stored in a dilution water storage tank with a temperature of 20°C; 31wt% concentrated hydrochloric acid ( The density is 1154 kg / m 3 ) stored in concentrated hydrochloric acid storage tanks at a temperature of 20°C; 5wt% dilute hydrochloric acid (with a density of 1154 kg / m 3 ) stored in dilute hydrochloric acid storage tanks at a temperature of 20°C. ...

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Abstract

The invention relates to a strong-basicity wastewater treatment method which is characterized by comprising the following steps: strong-basicity wastewater dilution, primary neutral reaction and secondary neutral reaction. According to the method, a two-step method is utilized to perform neutral treatment on the strong-basicity wastewater; concentrated sulfuric acid is utilized at first to performcrude regulation, and then dilute sulfuric acid is utilized to perform fine regulation; the situation that a lot of sulfuric acid is added in one time to cause too high system temperature is avoided,and cooling water is simultaneously utilized to cool wastewater. The method has a good treatment effect, the treated wastewater has a high wastewater purifying degree, meanwhile, the system temperature is effectively controlled, the risk caused by heat release in the neutral reaction is reduced, and safety potential safety hazards are reduced. The method has the advantages of strong impact load resistance, high stability, simple steps and convenience in operation.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method for purifying strongly alkaline wastewater. Background technique [0002] At present, there will be a lot of strong alkaline production wastewater in industrial production, such as burnt-out process and discharge dyeing process in textiles. These wastewaters are strongly alkaline (usually pH>14), so they need to be treated before they can be discharged. The traditional method is to pass through the acid solution for neutralization at one time. However, since the acid-base neutralization reaction is an exothermic reaction, a huge amount of heat will be released. In addition, the basic temperature of strong alkaline wastewater is often relatively high (over 30°C), so the temperature of the system is likely to rise rapidly during the neutralization reaction, resulting in the danger of acid or lye splashing, which increases the risk of safety accidents risk. Theref...

Claims

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Application Information

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IPC IPC(8): C02F1/66
CPCC02F1/66C02F2201/002C02F2209/02C02F2209/40C02F2301/08
Inventor 纪新运王小莉朱磊雷
Owner 苏州爱源环境科技有限公司
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