How does the defoamer solve the foam problem in the water treatment process?
Nowadays, people pay more and more attention to the quality of water, which is the source of life. In modern industry, there is no industrial sector that does not use water. Every factory needs to use various functions of water to maintain normal production, and almost every production link is involved in water. And the water we use has to go through a water treatment plant before it can be used. During water treatment in the water treatment plant, it was found that there was foam in the treated sewage. The thick foam led to the treated sewage failing to meet the discharge standard. Some water treatment plants decide to use water treatment defoamer. Next, let's learn why foam is produced in the process of water treatment.
In the process of industrial production, due to the needs of product quality and formula technology, various chemicals will be added in the production process. When the surface active ingredients are treated with water, the organic matter will be degraded and easily lead to foaming. The water treatment equipment is not adjusted well, there are too many drugs left, the surface tension of water is large, and the foaming will also increase.
When using equipment to treat wastewater, the equipment contains a certain amount of foam. If the temperature of the water is too high, the foam particles will become larger and more and more foam will be generated. The activated sludge method using the delayed aeration method is more prone to foaming. In addition, once the foam is formed, the biological residence time of the foam layer will be longer than that of the sludge in the aeration tank, and it is easy to form stable and durable foam.
What harm does foam generation do to water treatment?
Foam will directly affect the water quality of the final link, resulting in the detection of the environmental protection bureau not up to standard, which requires secondary treatment before discharge, directly causing time and economic losses. Too much foam will also cause overflow and serious pollution to the surrounding environment. Foam affects the overall water treatment process, not only affects the progress of treatment, but also affects the activated sludge and bacteria that treat water quality.
How to solve the foam problem in the water treatment process?
The methods of eliminating foam in water treatment can be divided into physical methods and chemical methods. First, let's introduce the physical method:
1. Spray water
The sprayed water can smash the air bubbles floating on the water surface at a high-speed spreading speed, and a part of the color porcelain in the decomposed sludge particles can restore the sedimentation performance and reduce the air bubbles. Although the method of sprinkling cannot fundamentally eliminate the foam, it can suppress the foam.
2. Shorten the residence time of sludge
Reduce the sludge retention time in the aeration tank, use the foaming microorganisms to leave the sludge to shorten the survival time, and inhibit or eliminate the excessive reproduction of microorganisms.
3. Put water treatment bacteria into the aeration tank.
Water treatment bacteria are used to degrade organic pollutants, increase the degradation rate of biochemical system, and reduce the production of foam.
Secondly, chemical methods are introduced:
Use chemicals to remove foams, such as defoaming agents, vegetable oils, oxidants, etc.
Zhengzhou Chengzhi Industrial Co., Ltd. is a modern technology enterprise engaged in the research, development, production and sale of fine chemical and biological enzyme products. The main products of the company are: hydrogen peroxide stabilizer, oxygen bleaching intensifier, bleaching activator, hydrogen peroxide promoter, chelating agent, cooking aid, sewage decolorizer, sodium silicate substitute, etc. Welcome to consult and understand. Company website: http://www.paperchemicals.com.cn.