Desalinating scale inhibitor for brackish water of saline-alkali soil and using method of the desalinating scale inhibitor

A technology for desalination of brackish water and saline-alkali land, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve the problems of long soil improvement cycle, large investment, and anti-salinity in saline-alkali land , to avoid waste of water resources, increase economic value, and ensure the effect of service life

Inactive Publication Date: 2018-06-22
WEIFANG YOURONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The area of ​​saline-alkali land in my country is vast, and some saline-alkali lands have abundant water. However, due to the soil and air environment of saline-alkali land, natural precipitation absorbs the saline-alkali components in the saline-alkali land and becomes brackish water. The other part of brackish-alkali water comes from the groundwater of saline-alkali land. The groundwater in the saline-alkaline environment becomes brackish water for a long time. The brackish water cannot be directly drunk or irrigated. The saline-alkali area has a large amount of water. If it cannot be fully utilized, water resources will be wasted.
In addition, a large amount of brackish water cannot be effectively used, and it accumulates in the lower layer of the saline-alkali soil for a long time. The control effect of saline-alkali land makes the soil improvement cycle of saline-alkali land long and the efficiency is low
[0003] Based on the above reasons, in order to improve the utilization rate of abundant groundwater in saline-alkali areas, more and more brackish water treatment equipments have been built in saline-alkali areas. These brackish water treatment equipment are easily affected by brackish water to form scale during operation. , thereby affecting the normal operation and treatment effect of the equipment, so it is necessary to add scale inhibitors in the brackish water desalination process to reduce the formation of scale and ensure the maximum degree of water treatment effect and equipment stability. The anti-scaling effect of the scale agent is not obvious, and the investment is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The scale inhibitor for desalination of brackish water in saline-alkali land includes the following components by weight, bamboo charcoal powder 15-20, silver oxide 2-6, phosphine-containing sulfonic acid terpolymer 10-20, polyacrylic acid 10-25, Organic phosphonic acid 20-30, maleic anhydride 8-10, fungicide 2-4, defoamer 4-6. Specifically, it includes the following components in parts by weight, bamboo charcoal powder 15, silver oxide 2, phosphine-containing sulfonic acid terpolymer 10, polyacrylic acid 10, organic phosphonic acid 20, maleic anhydride 8, bactericide 2, disinfectant Foaming agent 4.

[0031] The bactericide of this embodiment includes the following components in parts by weight, 10-15 wt% of dodecyldimethylbenzyl ammonium chloride, 4-6 wt% of chlorine dioxide, 2-ethylene bis-bis 8-15 wt% of zinc thiocarbamate, 20-30 wt% of manganese 2-ethylenebisdithiocarbamate, and the balance is water. Specifically, the fungicide includes the following components i...

Embodiment 2

[0034] The antiscalant for desalination of brackish water in saline-alkali land includes the following components by weight, bamboo charcoal powder 18, silver oxide 4, phosphine-containing sulfonic acid terpolymer 15, polyacrylic acid 18, organic phosphonic acid 25, maleic anhydride 9. Bactericide 3, defoamer 5.

[0035] The bactericide of this embodiment includes the following components in parts by weight, 12wt% of dodecyldimethylbenzyl ammonium chloride, 5wt% of chlorine dioxide, 2-ethylenebisdithiocarbamate 12wt% of zinc, 25wt% of manganese 2-ethylenebisdithiocarbamate, and the balance is water.

[0036] The defoamer of the present embodiment includes the following components in parts by weight, sodium carbonate 3, potassium iodide 2, mineral oil 25, cement clinker 8, sorbitol 4, coke 5, benzyl triphenyl bromide Phosphine 3, tert-pentane chloride 4, octamethylcyclotetrasiloxane 3, sodium hydroxymethyl cellulose 4.

Embodiment 3

[0038] The antiscalant for desalination of brackish water in saline-alkali land includes the following components in parts by weight, bamboo charcoal powder 20, silver oxide 6, phosphine-containing sulfonic acid terpolymer 20, polyacrylic acid 25, organic phosphonic acid 30, maleic anhydride 10. Bactericide 4, defoamer 6.

[0039] The bactericide includes the following components in parts by weight, 15 wt% of dodecyldimethylbenzyl ammonium chloride, 6 wt% of chlorine dioxide, 15 wt% of zinc 2-ethylenebisdithiocarbamate, 30 wt% of manganese 2-ethylenebisdithiocarbamate, and the balance is water.

[0040] The defoamer includes the following components in parts by weight, sodium carbonate 4, potassium iodide 3, mineral oil 30, cement clinker 10, sorbitol 6, coke 6, benzyltriphenylphosphine bromide 4, chlorine Pentane 5, Octamethylcyclotetrasiloxane 4, Sodium hydroxymethyl cellulose 6.

[0041]Although above-mentioned each embodiment is different in component ratio content, but ...

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PUM

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Abstract

The invention discloses a desalinating scale inhibitor for brackish water of saline-alkali soil. The desalinating scale inhibitor comprises the following components in parts by weight: bamboo charcoalpowder, silver oxide, a phosphonic and sulfonic acid-containing terpolymer, polyacrylic acid, organic phosphonic acid, maleic anhydride, a disinfectant and a defoaming agent. The invention also discloses a using method of the scale inhibitor. Centralized desalinating treatment can be carried out on brackish water in a saline-alkali soil area; the amount of scale during a treatment process is greatly reduced; water after the desalinating treatment can be directly used to irrigate crops, and can be used for salt leaching by filling water, so that the economic value of the saline-alkali soil isincreased; and through the treatment on the brackish water of the saline-alkali soil, abundant underground water of the saline-alkali soil can be effectively utilized, so that the waste of water resources can be avoided, and the influence on water quality in the area near the saline-alkali soil can be prevented during underground water circulation. The desalinating scale inhibitor has simple compatibility, high desalinating effect of brackish water and small amount of scale, facilitates the protection of operation stability of a water treatment device, furthest ensures the service life of thewater treatment device, and is suitable for extensive promotion and utilization in saline-alkali soil areas.

Description

technical field [0001] The invention relates to the technical field of brackish water treatment in saline-alkali land, in particular to a scale inhibitor for saline-alkali land desalination of brackish water. Background technique [0002] The area of ​​saline-alkali land in my country is vast, and some saline-alkali lands are abundant in water. However, due to the soil and air environment of saline-alkali land, natural precipitation absorbs the saline-alkali components in the saline-alkali land and becomes brackish water. The other part of brackish-alkali water comes from the groundwater of saline-alkali land. The groundwater in the saline-alkaline environment becomes brackish water for a long time. The brackish water cannot be directly drunk or irrigated. The saline-alkali area has a large amount of water. If it cannot be fully utilized, water resources will be wasted. In addition, a large amount of brackish water cannot be effectively used, and it accumulates in the lower l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
CPCC02F5/145
Inventor 王胜
Owner WEIFANG YOURONG IND
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