Industrial production will produce a large amount of sewage and waste water. Due to the production process and formula, a large amount of foam will usually appear in industrial waste water. To eliminate foam, adding a waste water treatment defoamer is a convenient and cost-effective method. This article analyzes the causes and hazards of industrial waste water foaming, and provides defoaming solutions for manufacturers and friends who encounter industrial waste water foam.
Causes of foaming in industrial wastewater
In the process of industrial wastewater treatment, due to the quality of the wastewater and the treatment process (such as: PH value, sludge retention time, dissolved oxygen, aeration method, temperature, etc.), it is easy to cause a large number of bubbles in the wastewater treatment process.
1. The wastewater contains surface active ingredients
Due to the industrial production process, in order to ensure the good performance of the product and to give the product some special properties, some additives are usually added. Many additives are surfactants, which can change the surface tension of the water quality and cause foaming. Produce and stabilize.
2. The water treatment process causes foaming.
a. PH value changes cause foaming: In the wastewater treatment process, different microorganisms have different requirements for pH, and the pH value of the wastewater tank will also cause the activated sludge to become unsuitable, resulting in foaming.
b. The sludge retention time causes foam: the sludge retention time factory also causes foam phenomenon. Once the foam is formed, the biological retention time of the foam layer will be independent of the sludge retention time in the aeration tank, and it is easy to form a stable and lasting foam. .
c. Temperature causes foam: The fungi related to the formation of biological foam have their own suitable growth temperature and optimal temperature. When the environment or water temperature is conducive to the growth of fungi, foam may occur.
(Picture: Industrial wastewater treatment)
The harm of industrial waste water foam
1. Foam affects water quality
Most biological foam may also enter the secondary settling tank, causing the increase of pollutants such as SS and CODcr in the external drainage.
2. The overflow of foam pollutes the environment
After a large amount of bio-foam is produced, it overflows the pool and spreads to the walkway board, affecting normal maintenance. Bio-foam may freeze in winter, making it difficult to clean up; in summer, it may drift in the wind, forming bad smells, and seriously polluting the environment.
3. Foam leads to a decrease in dissolved oxygen
The process of using surface aeration equipment, biological foam is viscous, which will prevent normal aeration and oxygenation and reduce the dissolved oxygen of the mixed solution.
Industrial wastewater foam for defoaming program
After analysis, the water quality and treatment process of industrial wastewater are prone to cause a large amount of foam. Wastewater foam not only increases the difficulty of water treatment, but also affects water quality, resulting in a decrease in dissolved oxygen, affecting the normal progress of water treatment projects, and increasing the difficulty of wastewater treatment.
The harmful foam in the wastewater treatment process needs to be controlled in time, and there are eleven good ways to add defoamers. However, there are many types of defoamers, many brands, and strong pertinence. If you encounter foam problems in wastewater treatment, you can find a professional defoamer manufacturer to provide solutions and purchase a wastewater treatment defoamer for defoaming.
(Picture:Industrial wastewater defoamer)
Nanhui defoamer is a professional defoamer research and development manufacturer, mainly engaged in polyether defoamers, silicone defoamers and mineral oil defoamers, etc. It provides free sample services and can recommend samples according to the customer’s use environment. In addition, Nanhui manufacturers also provide on-demand customized services, with good defoaming pertinence, customer cases of wastewater treatment defoamers designed for the wastewater environment, and good defoaming feedback.
Nanhui wastewater treatment defoamer has the following advantages:
1. Provide free samples, and the technical specialist will arrange sample tests according to your use environment and defoaming requirements;
2. Direct sales from the source factory, certified by powerful merchants, a wide range of products, thousands of formulas to choose from, there is always one suitable for you, sufficient supply, and rest assured to buy;
3. Complete pre-sales and after-sales service system, 24-hour online, one-stop service, designated person to follow orders regularly, and provide professional guidance;
4. Strong research and development strength, with a defoamer research and development room and a professional defoamer research and development team, and provide customized services with samples, with high defoaming efficiency and ideal effects.
