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Dispersing agent for reusing reclaimed water prepared from production wastewater as circulating cooling water and preparation method

A technology for circulating cooling water and production wastewater, applied in chemical instruments and methods, water/sludge/sewage treatment, descaling and water softening, etc. To achieve the effect of good scale inhibition and long-term treatment effect

Inactive Publication Date: 2014-05-14
天津科维津宏环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Reuse of reclaimed water has huge environmental and economic benefits, and is an advanced technology that is purely green and environmentally friendly. However, due to the complex sources of wastewater discharged by enterprises and different treatment processes, the quality of treated water varies, and the water quality is poor. After the production wastewater is treated, reclaimed water itself The characteristics it has will have a very bad impact on the circulating water system. A little carelessness will seriously affect the treatment effect of the circulating water, which will seriously affect the operation of the production system, cause production stoppage or equipment damage, and seriously restrict the reuse of reclaimed water. Scope of application and usage
[0003] Many companies use dispersants to control the trace substances contained in the circulating water system. However, due to the unstable water quality and numerous impurity ions in the process of industrial wastewater treatment, the existing dispersants in the industry cannot effectively control the circulating water system. Severe scaling and corrosion caused by trace substances in the environment, such as phosphate, calcium and magnesium ions, alkalinity, chloride ions, and various flora and algae

Method used

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  • Dispersing agent for reusing reclaimed water prepared from production wastewater as circulating cooling water and preparation method
  • Dispersing agent for reusing reclaimed water prepared from production wastewater as circulating cooling water and preparation method
  • Dispersing agent for reusing reclaimed water prepared from production wastewater as circulating cooling water and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of the dispersant used in circulating cooling water for reclaimed water from production wastewater comprises the following steps:

[0042] 1) Raw material preparation and dosing

[0043] a. Primer preparation and dosing: First, 300kg of deionized process water and 75kg of isopropanol are sucked into the reaction kettle through a vacuum pump in sequence, so that the liquid level in the reaction kettle is above the minimum liquid level of stirring, and then from the inlet of the reaction kettle Add 115kg maleic anhydride, start stirring, and stir at room temperature until the solid raw material is fully dissolved;

[0044]b. Preparation of No. 1 monomer solution: suck 32kg of methyl acrylate and 66kg of acrylic acid into No. 1 high-level tank respectively through a vacuum pump. After the two raw materials are sucked, vacuumize for 5 minutes to mix the two raw materials evenly to form No. 1. Monomer solution;

[0045] c. Preparation of No. 2 monome...

Embodiment 2

[0055] The preparation method of the dispersant used in circulating cooling water for reclaimed water from production wastewater comprises the following steps:

[0056] 1) Raw material preparation and dosing

[0057] a. Primer liquid preparation and dosing: First, 360kg of deionized process water and 75kg of isopropanol are sucked into the reaction kettle through a vacuum pump in sequence, so that the liquid level in the reaction kettle is above the minimum liquid level of stirring, and then from the inlet of the reaction kettle Add 120kg maleic anhydride, start stirring, and stir at room temperature until the solid raw material is fully dissolved;

[0058] b. Preparation of No. 1 monomer solution: suck 40kg of methyl acrylate and 90kg of acrylic acid into No. 1 high-level tank respectively through a vacuum pump. After the two raw materials are sucked, vacuumize for 6 minutes to mix the two raw materials evenly to form No. 1. Monomer solution;

[0059] c. Preparation of No. ...

Embodiment 3

[0069] The preparation method of the dispersant used in circulating cooling water for reclaimed water from production wastewater comprises the following steps:

[0070] 1) Raw material preparation and dosing

[0071] a. Primer preparation and dosing: First, 300kg of deionized process water and 50kg of isopropanol are sucked into the reactor through a vacuum pump in sequence, so that the liquid level in the reactor is above the minimum liquid level of stirring, and then from the inlet of the reactor Add 80kg of maleic anhydride, start stirring, and stir at room temperature until the solid raw materials are fully dissolved;

[0072] b. Preparation of No. 1 monomer solution: suck 30kg of methyl acrylate and 60kg of acrylic acid into No. 1 high-level tank respectively through a vacuum pump. After the two raw materials are sucked, vacuumize for 3 minutes to mix the two raw materials evenly to form No. 1. Monomer solution;

[0073] c. Preparation of No. 2 monomer solution: Put 30k...

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Abstract

The invention discloses a dispersing agent for reusing reclaimed water prepared from production wastewater as circulating cooling water and a preparation method of the dispersing agent through a copolymerization method. The dispersing agent is a mixture with multiple active groups and produced by multi-component copolymerization reaction; calcium carbonate and calcium phosphate crystals and organic microparticles can be effectively prevented from forming deposited scale through the adsorption and chelation effects between the dispersing agent and inorganic scaling microcrystals in water, such as calcium carbonate and calcium phosphate as well as the organic microparticles; the dispersing agent specifically meets the characteristics that the reclaimed water obtained after wastewater treatment is high in hardness and high in base and contains multiple complex organic matters, and effectively takes good scale inhibition and dispersion effects on a circulating water system for reclaimed water recycling, thereby obtaining good and long-acting treatment effect.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency polymer dispersants, and in particular relates to a dispersant and a preparation method for reclaiming reclaimed water from production waste water for circulating cooling water. Background technique [0002] Reuse of reclaimed water has huge environmental and economic benefits, and is an advanced technology that is purely green and environmentally friendly. However, due to the complex sources of wastewater discharged by enterprises and different treatment processes, the quality of treated water varies, and the water quality is poor. After the production wastewater is treated, reclaimed water itself The characteristics it has will have a very bad impact on the circulating water system. A little carelessness will seriously affect the treatment effect of the circulating water, which will seriously affect the operation of the production system, cause production stoppage or equipment damage, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F220/58C08F220/14C08F222/06C02F5/12
Inventor 李光海吕萍窦泽权
Owner 天津科维津宏环保科技有限公司
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