Blending is more appropriate, with standalone use (as the primary agent) being rare.

Using Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium Salt monomer alone cannot resolve complex water systa issues and is economically inefficient. Below is a detailed explanation of why blending is the superior choice and how to blend. Why is standalone use of EDTMPS monomer not recommended?

In the water treatment industry, the cost of using HPAA in combination with other agents is almost always lower than using HPAA alone.

This is not because HPAA itself is inexpensive, but because the “synergistic effect” generated through combination significantly enhances overall cost-effectiveness.

PESA, as a high-performance green water treatment agent, has standardized packaging and storage requiraents to ensure product stability and safe usage.

Below are common packaging and storage guidelines for PESA:

1. Stability under Extreme Temperature Conditions

This compound maintains molecular structural stability across an extreme temperature range from 150°C to -20°C. Its unique ether chain structure confers exceptional conformational flexibility, enabling the active group to maintain optimal orientation at varying temperatures. This characteristic makes it the preferred water treatment agent for specialized environments such as geothermal and polar regions.

1. Innovative Molecular Structure Design

PAPEMP's molecular structure innovatively integrates three functional units: polyamino, polyether, and phosphonic acid groups. This design endows it with h3 chelating capacity, excellent water solubility, and a unique spatial configuration. The ether bonds in the molecule provide flexible segments, enhancing spatial adaptability; multiple amino groups confer pH buffering capability. This sophisticated balanced design forms the molecular foundation for PAPEMP's exceptional performance, enabling it to maintain highly stable and efficient operation even under complex water conditions.

Characteristics and Applications of Polyamino Polyether Methylene Phosphonic Acid

1. Molecular Structure and Chemical Properties

PAPEMP possesses a unique dendritic molecular structure, featuring a core backbone composed of alternating amino and ether bonds, with multiple phosphonic acid groups attached peripherally. This three-dimensional configuration endows the molecule with exceptional chelating capacity, enabling a single molecule to simultaneously bind multiple metal ions. The incorporation of ether bonds significantly enhances molecular flexibility and water solubility, ensuring excellent dispersion stability across varying water conditions. Nitrogen and oxygen atoms within the molecule jointly form multiple coordination centers, creating exceptionally stable metal complexes.

1. Severe Challenges Facing Reverse Osmosis Membrane Systems

Modern reverse osmosis systems encounter increasingly complex water quality issues during operation. High recovery rate operation leads to a sharp increase in contaminant concentration on the membrane surface, and traditional scale inhibitors often struggle to address the complex scenario where multiple scaling substances coexist. This necessitates the development of new treatment chemicals with more comprehensive protective functions.

In industrial water treatment, scaling raains one of the core challenges affecting systa efficiency and safety. As water resources grow increasingly scarce, increasing the concentration ratio of circulating water systas has become a key measure for water conservation and aission reduction. However, this simultaneously significantly elevates scaling risks, particularly for difficult-to-treat calcium phosphate scale, zinc scale, and organic phosphate scale. Traditional scale inhibitors often prove inadequate under the daanding conditions of high concentration ratios, high hardness, and high alkalinity. This has spurred the development of multifunctional scale inhibitors featuring unique macromolecular structures, which have revolutionized scale inhibition technology through their exceptional dispersing capabilities.

The primary applications of   Polyamino Polyether Methylene Phosphonic Acid

I. Challenges in Treating Complex Industrial Systas

Modern industrial water systas often face multiple challenges simultaneously, including high hardness, high turbidity, and high corrosion. Traditional single-function treatment agents struggle to meet comprehensive protection requiraents. The aergence of polyamino polyether-based methylenediphosphonic acid compounds offers a novel holistic solution for such complex systas.

Chemical Structure:

Composed of two 1,6-hexamethylene (i.e., hexamethylene diamine) molecules connected to a triamine group and five methylphosphonic acid groups.

Appearance and State:

Typically appears as a transparent liquid ranging in color from yellow to reddish-brown.

To protect the environment and ensure the efficient use of resources, wastewater must be treated to meet discharge standards before it can be discharged or recycled. In this process, chemical agents play a crucial role. Depending on their intended use, these agents are categorized as follows:

In the normal operation of the reverse osmosis equipment, you need to use a variety of water treatment chemicals to ensure the stability of the system and the quality of water production. The following are several commonly used water treatment chemicals:

There are many kinds of water treatment chemicals, mainly including flocculants, scale inhibitors, corrosion inhibitors, biocides, defoamers and cleaning agents. These agents play a vital role in the water treatment process.

Flocculants: used to accelerate the coagulation of suspended particles and help impurities in water to form large particles for subsequent treatment.

1, diversification and integration of applications

Water treatment technology means and process routes are developing in the direction of diversification, and tend to integrate a variety of technologies to improve treatment efficiency and adapt to a wider range of water quality requirements. This includes physical, chemical and biological treatment methods and their combinations, such as membrane technology, advanced oxidation processes (AOPs), biological treatment technology (such as MBR, that is, membrane bioreactor) and natural treatment systems.

At present, we have a general knowledge of the environmental market, is the traditional environmental market has reached the top, and now environmental protection enterprises to do is to develop a new “main battlefield”. So what the future market will be released, the way out of environmental protection enterprises?

In the bitter winds of the industry winter, many environmental listed companies are trapped in the performance decline, intensified competition in the market, increased financial pressure, difficult to pay back and other difficulties. But even so, they still did not retreat, but actively explore the way out, in full force to do a good job.

Ningxia NINGDONG Energy and Chemical Industry Base implements the requirements of the pilot construction of “Four Water Four Settings”, gives priority to water conservation, focuses on water-based production, promotes the optimization and upgrading of industrial structure, actively cultivates new water-saving industries, guides enterprises to change their water consumption mode, improves water consumption efficiency, improves the park's water resource management system, and builds the first batch of water-saving parks in the whole region and the first national industrial wastewater recycling pilot park in the northwest of China. It will be the first water-saving park in the region and the first national industrial wastewater recycling pilot park in Northwest China.

In the face of the urgent need for precise treatment of characteristic pollutants in water bodies, the efficient development of environmental functional materials has long been limited by the bottleneck of unclear analysis of key action mechanisms and lack of high-quality data resources. In recent years, Professor Zhang Weiming's group at Nanjing University has innovatively proposed the research paradigm of “water treatment adsorbent material data resource driving”, which has successfully realized the closed-loop optimization of adsorbent materials from “performance evaluation-mechanism analysis-targeted design” through the systematic construction of a multi-source heterogeneous material database and the development of advanced machine-learning analysis tools, and has provided an opportunity for the efficient development of functional materials for the environment. Targeted design", providing a new path for the intelligent development of environmental functional materials. The group has carried out a series of researches on the application strategy of adsorbent material data resources, including data-driven adsorption model development (Separation and Purification Technology 368 (2025) 133019), data-driven high-throughput material screening (Separation and Purification Technology 339 (2024) 133019) and data-driven high throughput material screening (Separation and Purification Technology 339 (2024) 133019). Technology 339 (2024) 126732), and data-driven material reverse engineering (Environmental Science & Technology 2024, 58, 15298-15310). In this context, based on the previously constructed adsorbent material dataset for target pollutants, the group further expanded the adsorbent material dataset for a variety of oxygen-containing anions. It was found that the existing literature datasets generally have serious data bias problems: 1. about 80% of the data are concentrated in pH-neutral conditions (pH=7), while the samples under acidic and alkaline conditions are seriously scarce, leading to the modeling error in judging the influence of pH on the adsorption regulation; 2. about 65% of the initial pollutant concentrations are distributed in the range of 10-100 ppm, and data for the application scenarios of high-concentration and low-concentration waste water treatment are missing, resulting in the modeling error in judging the effect of pH on the adsorption. The lack of data for the application scenarios caused the model to misrepresent the negative correlation between concentration and adsorption. This “survivor bias” caused by “publication bias” has seriously misled the scholars to analyze the adsorption mechanism, for example, the model incorrectly determines the spatial resistance as the dominant mechanism, which is contrary to the real adsorption phenomenon. In order to address the above challenges, the group innovatively proposed an “experimental-literature composite dataset” equalization strategy, in which 697 sets of experimental data were supplemented for real-world application scenarios (e.g., typical wastewater conditions: pH 1-6, concentration 1-1000 ppm). This strategy significantly improves the model performance, with the prediction accuracy improved by 4.49% and the confidence interval narrowed by 50%. Based on the equalized dataset, the feature importance analysis clearly showed that the electrostatic effect dominated the adsorption process with a contribution of 48.4%. And the experimental validation results are consistent with this inference: the quaternary amine resin enhanced the adsorption of CrO42- by three times compared with the primary amine resin due to its higher charge density. Meanwhile, DFT theoretical calculations also supported the dominance of electrostatic interaction (rather than spatial site resistance) in the adsorption process. As a result, the group further oriented the covalent organic polymer COP-A, which enhanced the adsorption capacity by 56% compared with the conventional material through the enhancement of charge density. This study has constructed a new paradigm of “data equalization-feature classification-mechanism quantification”, which provides an effective method for the common problem of “distortion of data leads to distortion of conclusions” in the study of adsorbent materials for water treatment, and provides scientific guidance for the precise separation of characteristic pollutants in water.

In order to deeply implaent the Third Plenary Session of the 20th CPC Central Committee to build a beautiful China, accelerate the economic and social development of the overall green transformation of the spirit of the implaentation of national and local sewage managaent policy documents, to promote the green and low-carbon treatment of wastewater and the utilization of resources technology, process, program innovation and application, and to promote the water industry, investment, construction, operation, innovation and integration and sustainable development of the Chinese Chaical Industry Association, the Chinese Chaical Industry Association, the National Engineering and Technology Research Center of industrial water treatment, and the China Railway Shanghai Engineering Bureau Group Co. Ltd. will jointly hold “2025 Forum on Green and Low-Carbon