CN-117603083-B - Preparation and application of four-head bola type efficient bactericide

CN117603083BCN 117603083 BCN117603083 BCN 117603083BCN-117603083-B

Abstract

The invention discloses preparation and application of a four-head bola type efficient bactericide, and belongs to the field of water treatment science. The solubility of the four-head bola type high-efficiency bactericide in water at normal temperature is up to 1000mmol/L, and the bactericide contains amide groups, is easy to degrade and is environment-friendly. The four-head bola type efficient bactericide can reach a sterilization rate of more than 99.6% when the concentration is more than 150mg/L, and can reach an algae removal rate of 99.8% after three days when the concentration is more than 200 mg/L. The hydrophobic groups of the bactericide are positioned between the ion head groups, so that the foamability of the bactericide is extremely poor, and a defoaming agent is not required to be added in the use process, so that the running cost of the system is reduced. Meanwhile, the four-head bola type bactericide and the common anionic scale inhibitor have good compatibility, and the solution is clear and transparent after the four-head bola type bactericide and the common anionic scale inhibitor are mixed, so that the system still has excellent scale inhibition performance.

Inventors

CHEN DENGXIN
ZHONG CHONGJUN
HUANG HUIFANG

Assignees

无锡广源高科技有限公司

Dates

Publication Date: 20260508
Application Date: 20231129

Claims (6)

1. A compound having the molecular structure: 。
2. The sterilizing and scale inhibiting penetrating agent is characterized by comprising the compound of claim 1 and an anionic scale inhibiting agent, wherein the anionic scale inhibiting agent is sodium polyacrylate, the concentration of the compound is 100-300 ppm, and the concentration of the anionic scale inhibiting agent is 200-500 ppm.
3. Use of a compound according to claim 1 in water treatment.
4. Use according to claim 3, characterized in that the use comprises industrial water treatment, cooling water systems, disinfection of drinking water.
5. Use of the bactericidal scale-inhibiting penetrant of claim 2 in water treatment.
6. The use according to claim 5, characterized in that the use comprises industrial water treatment, cooling water systems, disinfection of drinking water.

Description

Preparation and application of four-head bola type efficient bactericide Technical Field The invention relates to preparation and application of a four-head bola type efficient bactericide, and belongs to the field of water treatment science. Background With the rapid rise of global economy and industrialization level, water resource shortage becomes a global problem. In many industrial processes, such as thermal power generation and pulping and papermaking, the demand for large amounts of water resources further exacerbates the pressure of water shortages. One of the key ways to solve this problem is to implement recycling of water resources. In industrial production, a circulating cooling water system is widely adopted to achieve the aims of high-efficiency water use and water saving. In an open circulating cooling water system which operates for a long time, microorganisms in the system are propagated in a large quantity along with invasion of microorganisms in the air, so that water quality is deteriorated, and meanwhile, scaling phenomena are generated on the inner wall and the pipeline of the system along with increase of concentration multiple. These factors can cause corrosion of equipment, reduce heat transfer efficiency, and thus affect the proper operation of the system. Therefore, the selection of appropriate chemicals to inhibit microbial growth and intra-system scaling is an important guarantee to ensure efficient use of water resources. In the circulating cooling water system, common microorganisms mainly include bacteria, fungi, algae and the like. According to the mechanism of sterilization, commonly used bactericides are classified into oxidizing bactericides (such as chlorine, active bromine, chlorphenamine, etc.) and non-oxidizing bactericides (such as chlorophenols, quaternary ammonium salts, etc.). The oxidation type bactericide has better bactericidal effect, but generally has the problems of larger toxicity, secondary pollution to water body and the like. With the enhancement of environmental awareness, people gradually throw eyes towards quaternary ammonium salt surfactants with smaller toxicity, and JielMIE and XinelMIE are two of the most common. However, in the practical use process, the quaternary ammonium salt surfactant also has a certain problem. First, aqueous solutions in which surfactants are dissolved generate a large amount of foam during the flow. In order to make the circulating water system normally operate, a defoaming agent is usually added, so that the cost is increased, and secondly, because the hydrophilic head base of the quaternary ammonium salt surfactant has positive charges, when the quaternary ammonium salt surfactant is mixed with some anionic scale inhibitors such as sodium polyacrylate and the like for use, the quaternary ammonium salt surfactant is easy to be strongly combined with anions through electrostatic attraction to form organic matter precipitates, so that the sterilizing and scale inhibiting effects are weakened. The prior art CN116395865A discloses an environment-friendly phosphorus-free quaternary ammonium salt scale inhibitor and application thereof, and discloses a compound with a tetrameric quaternary ammonium salt structure, which has high solubility and good scale inhibition performance, but has poor sterilization performance and is not easy to degrade, and meanwhile, the technology does not solve the problem of foaming of a surfactant in the flowing process. The non-foaming characteristic of the sterilizing scale inhibitor reduces the foaming problem in the system, not only is beneficial to the normal operation of a water circulation system, but also reduces the cost of adding the defoaming agent. On the basis, the characteristic of easy degradation ensures that the bactericide is easier to be naturally degraded after being used, reduces the influence on the environment and accords with the concept of sustainable development. Together, the advantages provide a feasible solution for the novel bactericide in the aspects of improving the water resource utilization efficiency, reducing the cost, relieving the environmental burden and the like. Therefore, the novel quaternary ammonium salt bactericide which has high sterilization efficiency, good scale inhibition, high solubility, poor foamability and easy degradation is developed, and has important significance for prolonging the service life of a circulating water system and saving water resources. Disclosure of Invention Technical problems: The quaternary ammonium salt bactericide is adsorbed and destroyed by utilizing the characteristic that the surface of bacteria is negatively charged, so that the drug resistance is not easy to generate. However, in the practical use process, the aqueous solution of the quaternary ammonium salt surfactant is easy to generate a large amount of foam in the flowing process, and when the aqueous solution of the quaternary ammonium salt surfactant is mixed