Method for treating ultrahigh-hardness and ultrahigh-conductivity waste water

A technology with high conductivity and conductivity, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of rapid attenuation of treatment effect, troublesome operation and maintenance, and average water production Low conductivity and other problems, to achieve the effect of reducing conductivity, low operating cost, and simple operation

Active Publication Date: 2012-11-14
云南江豪科技有限公司 +1
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Problems solved by technology

[0005] 1. The life of the membrane itself is short;
[0006] 2. During the life span of 2-3 years, the treatment effect decays quickly;
[0007] 3. It is easy to

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  • Method for treating ultrahigh-hardness and ultrahigh-conductivity waste water

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[0042] Such as figure 1 As shown, the method for treating ultra-high hardness and ultra-high conductivity wastewater of the present invention is performed as follows:

[0043] step one:

[0044] The total hardness of the water is tested after the wastewater flows into the regulating tank and mixed for 15-20 minutes. When the total hardness is <550 mg / L and the pH value is between 7.5 and 11, you can directly enter step two treatment. If the total hardness is ≥550 mg / L, introduce the water into the sodium carbonate stirring tank, add sodium carbonate to the water and stir for 20 to 35 minutes until the water Total hardness <550 mg / L, (after adding sodium carbonate, a large amount of calcium carbonate will be generated in the water), sedimentation is 3-6 hours, the supernatant after sedimentation enters the second treatment, and the remaining calcium carbonate-containing sludge is pumped by the sludge pump To the sludge dehydrator for solid-liquid separation, the separated water ret...

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Abstract

The invention relates to a method for treating ultrahigh-hardness and ultrahigh-conductivity waste water. The method comprises the steps of: leading waste water of all ways to flow in a regulation pool, mixing and detecting the total hardness of the water, adding sodium carbonate in water with high hardness so as to generate indissolvable calcium carbonate with calcium in the water, thus achieving the purpose of softening water; electrifying an adsorption system, removing the majority of cations and anions in the water, purifying outflowing water after being adsorbed by the electrode until water reaches the standard to be directly recycled after flowing in a recycling pool. The method can effectively reduce the hardness and conductivity of the waste water, is simple and convenient for data observation, simple to operate, low in running cost, and high in outflow rate up to 90-96%, and can not cause secondary pollution due to introduction of new matters.

Description

[0001] technical field [0002] The invention relates to the technical field of wastewater treatment, in particular to a method for treating wastewater with ultra-high hardness and ultra-high conductivity. Background technique [0003] There are many industrial products in the metallurgical industry, and the production processes are divided into series, which discharge a large amount of wastewater, which is an important source of wastewater that pollutes the environment. Its composition is complex and changeable, and the metallurgical wastewater with extremely high hardness and high conductivity is extremely difficult to treat. one. Recycling of wastewater after treatment is an important measure for metallurgical wastewater treatment. [0004] At present, the most widely used method for treating wastewater with high hardness and high conductivity is reverse osmosis membrane technology. However, after using the membrane system to filter for a certain period of time, the...

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Application Information

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IPC IPC(8): C02F9/10
Inventor 蒋嵩谢小艳
Owner 云南江豪科技有限公司
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