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

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...

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