How to Choose the Right Water Treatment Reagent

Water treatment chemicals are essential chemicals in the treatment process of industrial water, domestic water, and wastewater. By using these chemicals, water can meet the required quality requirements. Its primary effect is to control the composition of scale and sludge, reduce foam, reduce data erosion in contact with water, remove Suspended solids and toxic substances in water, deodorize and decolorize, and soften water quality. At present, due to the rapid increase of water consumption in countries around the world, various environmental protection laws and regulations (Water purification Law) have been issued continuously, and the requirements are increasingly stringent, so the changes in various better water treatment agents are very fast. In China, the contradiction with the increasingly severe water resource crisis is the low production capacity and unregulated quality of water treatment chemicals. Therefore, accelerating the development of water treatment chemicals in China is urgent.

Water treatment agents include flocculants, corrosion inhibitors, scale inhibitors, biocides, dispersants, cleaning agents, pre film agents, defoamers, decolorizers, chelating agents, deoxidizers, etc.

1、 Reference factors for selecting water treatment agents

1. Acidity of water treatment agents

The acidity of water treatment agents is crucial. Acidic agents are generally used for cleaning equipment, product surfaces, and pipelines, so the acidity index is quite important. This type of agent should pay attention to its stability and product quality, which will directly affect the cleaning effect and quality.

2. Water content of water treatment agents

According to the basic principles of pharmaceuticals, the less water the better, but due to production processes, it is impossible to achieve complete absence of water.

3. Non volatile impurities

The amount of impurities directly affects the effectiveness of the medication. In industrial circulating water, excessive impurities in chemicals can cause pollution to the water quality. For cleaning agents, there may be substances that cannot be seen by the naked eye adsorbed on the surface of small products, which may directly affect product quality in severe cases. Therefore, impurities are also an important indicator.

4. Toxicity of water treatment agents

Drugs with high toxicity can directly pollute the environment and even affect human health, so non-toxic and low toxicity are important indicators of high-quality drugs.

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2、 Reference factors for selecting wastewater treatment agents

The compliance rate of sewage treatment depends on factors such as sewage concentration and properties, discharge standards, processes, sewage treatment reagents, and management. The first three factors are basically fixed, while the variable factors are mainly reagents and management. In sewage treatment, heavy capture agents, phosphorus removal agents, COD removal agents, phosphite removal agents, ammonia nitrogen removal agents, and chelating agents are often used, and the types of agents are diverse and complex. How to choose good drugs is an important factor in improving the compliance rate, and drugs with the following elements are high-quality drugs.

1. efficacy

(1) Low comprehensive consumption

The cost of using different reagents to process the same water sample, as well as other costs such as acid, alkali, PAM, sludge pressure (sludge volume, sludge pressure cost), and labor costs, is low

(2) High processing rate

The comparison of the higher removal efficiency of pollutants by different agents, with each agent having a treatment rate limit. The higher the treatment rate, the higher the probability of wastewater reaching the standard, and the lower the environmental risk.

2. Not bringing in controlled pollutants

For example, some agents with the purpose of phosphorus removal have a total phosphorus content of tens of thousands or even tens of thousands (assuming a total phosphorus content of 5000ppm and a dosage of 100ppm, the total phosphorus brought into the sewage by the agent can reach up to 0.5mg/L, which has reached the upper limit of Level A control);

Chemicals aimed at removing COD have a COD of over 10000 (assuming a COD of 10000ppm and a dosage of 3000ppm, the COD brought into the wastewater by the agent can reach up to 30mg/L).

3. security

(1) Harmless to human body

Does not contain highly toxic cyanide, mercaptan, thiourea, etc. The Guangzhou Meili incident on August 10, 2013 resulted in one death and three injuries to the operator. The factory purchased a batch of sewage treatment chemicals (liquid), which were unloaded by the sewage treatment worker Huang. During the unloading process, there was an unknown gas leak, causing Huang to be poisoned and fall to the ground. Nearby workers discovered it and came forward to rescue him, but also fainted one after another.

(2) Harmless to the biochemical system

Does not contain copper, nickel, mercury, arsenic, chromium, cadmium, etc. that kill or reduce microorganisms.

(3) Harmless to equipment 

Minimal corrosion on water pumps, pipelines, instruments, concrete, and containers, otherwise it will significantly increase maintenance and reconstruction costs

The above is what Hongjie Water brings to everyone about "how to make the right choice of water treatment reagents". We hope it can help you!

Shenzhen Hongjie Water Technology Co., Ltd. is an integrated high-tech enterprise specializing in product development, production, sales, engineering design, installation and commissioning, technical consultation, and sales of supporting materials in the field of industrial water treatment and drinking water treatment. Main products: design, manufacturing, installation, commissioning and maintenance of water treatment equipment such as pure water equipment, Ultrapure water equipment, reverse osmosis equipment, GMP purified water equipment, EDI deionized water equipment, domestic sewage equipment, industrial wastewater equipment, softened water equipment and reclaimed water reuse equipment.