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Composite water treatment agent

A technology of water treatment agent and carboxylate, which is applied in complex/solubilizer treatment, water/sludge/sewage treatment, descaling and water softening, etc. It can solve the problems of high toxicity and achieve low cost and high effect Excellent, easily biodegradable effect

Inactive Publication Date: 2014-03-26
QINGDAO BAIZHONG CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the water treatment corrosion inhibitors commonly used in domestic and foreign cooling water systems use phosphate series (referred to as phosphorus series) or include chromate, nitrite, silicic acid Salt, molybdate, zinc salt, phosphate, polyphosphate, organic phosphonate, mercaptobenzothiazole (MBT), benzotriazole (BTA), etc. The types of scale inhibitors and dispersants include polyphosphate, Organic phosphoric acid, phosphonic acid, organic phosphoric acid ester, polycarboxylic acid, etc., but most of the above-mentioned water treatment agents are based on phosphorus-based formulas and chromium-based formulas, and chromate water treatment agents are highly toxic, and the dosage is up to Hundreds of mg / L, while the allowable emission limit of Cr (VI) is less than 0.05mg / L

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix 40mg of sodium tungstate, 20mg of polyaspartic acid, 4mg of zinc sulfate, 5mg of sodium benzoate, and 5mg of sodium gluconate in 1L of water to obtain a composite water treatment agent.

[0020] The composite water treatment agent of gained is used for following water quality to carry out test: Ca 2+ 107mg / L, Cl — 70mg / L, total hardness (as CaCO 3 Total alkalinity) 164mg / L, total alkalinity 88mg / L, pH 6.5.

[0021] Static antiscaling test: adding a certain concentration of Ca in deionized water 2+ .HCO - And the water treatment agent whose scale inhibition rate is to be tested is placed in a constant temperature water bath at a certain temperature for 16 hours, and the calcium ion content in the supernatant liquid is analyzed and measured by the EDTA method to evaluate the scale inhibition performance of the scale inhibitor.

[0022] Rotary hanging test: calculate the time from the time when the test piece is placed in the test solution with a temperature of 40...

Embodiment 2

[0024] Mix 40mg of sodium tungstate, 10mg of polyaspartic acid, 4mg of zinc sulfate, 10mg of sodium benzoate, and 10mg of sodium gluconate in 1L of water to obtain a composite water treatment agent.

[0025] The composite water treatment agent of gained is used for following water quality to carry out test: Ca 2+ 107mg / L, Cl — 70mg / L, total hardness (as CaCO 3 Total alkalinity) 164mg / L, total alkalinity 88mg / L, pH 6.5.

[0026] Static antiscaling test: adding a certain concentration of Ca in deionized water 2+ .HCO - And the water treatment agent whose scale inhibition rate is to be tested is placed in a constant temperature water bath at a certain temperature for 16 hours, and the calcium ion content in the supernatant liquid is analyzed and measured by the EDTA method to evaluate the scale inhibition performance of the scale inhibitor.

[0027] Rotary hanging test: calculate the time from the time when the test piece is placed in the test solution with a temperature of ...

Embodiment 3

[0029] Mix 20mg of sodium tungstate, 10mg of polyaspartic acid, 4mg of zinc sulfate, 5mg of sodium benzoate, and 20mg of sodium gluconate in 1L of water to obtain a composite water treatment agent.

[0030] The composite water treatment agent of gained is used for following water quality to carry out test: Ca 2+ 107mg / L, Cl — 70mg / L, total hardness (as CaCO 3 Total alkalinity) 164mg / L, total alkalinity 88mg / L, pH 6.5.

[0031] Static antiscaling test: adding a certain concentration of Ca in deionized water 2+ .HCO - And the water treatment agent whose scale inhibition rate is to be tested is placed in a constant temperature water bath at a certain temperature for 16 hours, and the calcium ion content in the supernatant liquid is analyzed and measured by the EDTA method to evaluate the scale inhibition performance of the scale inhibitor.

[0032] Rotary hanging test: calculate the time from the time when the test piece is placed in the test solution with a temperature of 4...

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PUM

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Abstract

The invention discloses a composite water treatment agent which comprises the following components in parts by mass: 15-45 parts of sodium tungstate, 5-25 parts of polyaspartic acid, 1-5 parts of zinc salt, 2-15 parts of sodium benzoate and 2-25 parts of carboxylate, wherein sodium tungstate is a corrosion inhibitor which is non-toxic, causes no environmental hazard and can generate the synergic corrosion inhibition function with polyaspartic acid. With addition of other assistants, the composite water treatment agent becomes a green composite water treatment agent which has excellent corrosion inhibition and scale inhibition effects, lower in cost, non-phosphorus, easily biodegradable and beneficial to environmental protection. In China, tungsten reserves and yield are abundant, so that the sufficient tungsten compounds can be provided, and the cost of the treatment agent is greatly lowered.

Description

Technical field [0001] The invention involves the field of industrial circulation cooling water treatment technology, especially a composite water treatment agent. Background technique [0002] Most of the commonly used water treatment corrosion in the cooling water system at home and abroad use phosphate series (referred to as phosphorus) or include chromate, nitrite, silicate, key acid, zinc salt, phosphate, polyphonate salt, Organic acid salt, pyrethylene pheasole (MBT), benzenezolzole (BTA), etc., the types of dirt -resistant dispersing agents include polyphosphoos, organic phosphate, cycling acid, organic phosphate, polycarboxylic acid, etc.However, most of these water treatment agents are mainly phosphorus formulas and chromium formulas, while chromate water treatment agents are highly toxic, with a volume of hundreds of mg / L.The value is less than 0.05mg / L.Phosphorus water treatment agents have the characteristics of nutritional characteristics. It is easy to promote the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08C02F5/12
Inventor 张明
Owner QINGDAO BAIZHONG CHEM TECH
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