Waste water purifying agent, and its preparing method and use

A purifying agent and wastewater technology, which is applied in chemical instruments and methods, water/sewage treatment, adsorbed water/sewage treatment, etc. It can improve the ability of removing oil pollution and various harmful impurities, improve the separation rate of free water, and improve the lipophilicity.

Active Publication Date: 2005-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purifying agent has a partial coagulation function, and mainly removes harmful substances in water by adsorption. However, the actual use effect shows that the modified bentonite in it only has a relatively reliable purification efficiency for single-pollution or low-pollution wastewater. When the pollution components of the water body are slightly complicated, this substance will be powerless. For example, when there is LAS (anionic surfactant) in the water body, its coagulation efficiency will be greatly reduced, the alum flowers will become broken, and the solid-liquid separation ability will drop sharply. In severe cases Can't even complete the coagulation process
In addition, this product has a very low adsorption capacity for oily substances and does not have the ability to effectively remove metal ions. The scope of application is narrow and it cannot be used for the purification of heavily polluted industrial wastewater

Method used

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  • Waste water purifying agent, and its preparing method and use
  • Waste water purifying agent, and its preparing method and use
  • Waste water purifying agent, and its preparing method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Cationic attapulgite A1 Preparation of:

[0059]a. Sodium treatment: crush the attapulgite into finer than 150 mesh, and fully mix it with a sodium chloride (NaCl) solution with a concentration of 150 g / l. The weight ratio of NaCl to attapulgite is preferably 3:1. After fully stirring for 8 hours, solid-liquid separation was carried out, and the precipitate was washed, dried at 110°C, and crushed through a 200-mesh sieve.

[0060] b. Electrical property modification treatment: fully mix the sodium-treated attapulgite with an aluminum chloride (AlCl3) solution with a concentration of 0.5 mol / l. The weight ratio of AlCl3 to attapulgite is preferably 1:1. After fully stirring for 24 hours, solid-liquid separation was carried out, and the precipitate was washed, dried at 110°C, and crushed through a 200-mesh sieve.

[0061] c. Pore-forming treatment: mix paper scraps passed through a 60-mesh sieve with polyvinyl alcohol in a weight ratio of 2:1 as a porogen, and add the...

Embodiment 2

[0064] Preparation of activated alumina B1:

[0065] a. Wash and dry the glass and ceramics separately.

[0066] b. The above-mentioned glass and ceramics are respectively pulverized through a 200-mesh sieve.

[0067] c. Mix ceramic powder and glass powder in a ratio of 3:1 to obtain the activated alumina B2 .

Embodiment 3

[0069] activated silicate B2 Preparation of:

[0070] a. Take commercially available water glass (Na 2 SiO 3 or K 2 SiO 3 ), namely Na 2 O nSiO 2 or K 2 O nSiO 2 , where n is greater than or equal to 3. Press Al +3 : SiO 2 The water glass and the aluminum hydroxide solution are thoroughly mixed in a molar ratio of 1:1.

[0071] b. Add 15% sulfuric acid dropwise to the above mixture to adjust the pH to 3.6, and keep stirring for 8 hours. Solid-liquid separation is then performed. The acid is 15% sulfuric acid.

[0072] c. Dry the solid phase obtained in step b at 300°C for 2 hours, then cool and pulverize to obtain the activated silicate B2 .

[0073] 2. Preparation of waste water purification agent and water treatment experiment

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Abstract

The invention relates to a kind of wastewater depurator and its manufacturing method and application, which involves in sewage disposal environment. The wastewater depurator contains blend concave-convex stick soil, inorganic filling containing silicon dioxide, acidifying high-chemical valence metal salt and so on. After acidifying to PH 1-3, high-chemical valence metal salt solution evenly mixes with other components and dries, then it can be acquired. The wastewater depurator can make condensation and absorption function in a whole, and can make treating effictiveness basically not influenced by factors such as water-body condition, pollution extent, wastewater category and so on. And also it has stable treating effictiveness, wide scope of application, especially adapts to preliminary purifying treatment for industrial wastewater with bad pollution. The manufacturing method and the industrial art for water treatment are simple so that it is easy for operation, and in a result, it has wider extending application prospect.

Description

technical field [0001] The present invention relates to a kind of water treatment agent, more specifically, relates to a kind of waste water purification agent containing clay mineral, its preparation method and the application of waste water treatment. Background technique [0002] In the modern water treatment process, coagulation-flocculation treatment technology is still the technical solution with the highest utilization rate and better treatment effect. The core of the process is to make various fine impurities or toxic dissolved substances in the sewage It precipitates in the form of adsorption and aggregation, so it is easy to separate it from the water body by solid-liquid separation or filtration technology to achieve water purification. Under normal circumstances, the efficiency of this scheme is relatively high, but if it encounters sewage with complex pollution components and relatively large pollution load, the implementation of this process will encounter man...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/28C02F1/52
Inventor 蔡利山王文立刘四海宋明全赵素丽
Owner CHINA PETROLEUM & CHEM CORP
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