With the increasing awareness of environmental protection, the country and enterprises have become more and more strict with regard to sewage discharge. Sewage must be discharged after reaching the target, otherwise it will cause ecological environmental pollution and cause certain harm to the human body. The sewage caused by the industry during production is prone to a large amount of foam, because it contains very rich surface activity and other bacterial species. Therefore, we can appropriately add aeration tank defoaming agent to eliminate the foam inside and control the occurrence of foam.
(Picture: Sewage foam scene in aeration tank)
Causes of foaming of industrial sewage, treatment process of aeration tank
The direct discharge of untreated sewage will not only pollute rivers, but also affect aquatic fish and shrimps, as well as the surrounding environment. Under the supervision of environmental protection, it is obviously impossible to secretly discharge sewage. Sewage contains a lot of harmful components, and it needs to be treated qualified before it can be discharged. However, in the process of biological water treatment, especially in the aeration stage, due to sludge retention time, PH value, dissolved oxygen, aeration method, temperature, etc. The reason is that the aeration tank is more prone to encounter foam problems. Aeration tank defoamer can be added to control the occurrence of foam, so what are the reasons for the foam?
1. Changes in PH value cause blistering
Different biological bacteria have different requirements for pH value. When the pH value changes, it will cause the discomfort of activated sludge, which will lead to the production of foam.
2. Different aeration methods cause blistering
Different aeration methods lead to different foams and easily lead to the production of biological foams. Foam is easier to concentrate in the area with low aeration intensity in the aeration tank;
3. The sludge retention time causes foaming
The foam-producing microorganisms have a low production rate and a long reproductive growth cycle. Once foamed, the biological residence time of the foam layer will be independent of the residence time of the sludge in the aeration tank, and it is easy to form a stable and lasting foam;
4. Abnormal microbial growth
There are a large number of filamentous bacteria in the aeration tank or secondary sedimentation tank in the sewage, and a large amount of foam accumulates on the water surface;
5. Surface activity and organic matter foaming
Part of the organic matter in the aeration tank is degraded by surfactants to form a large amount of foam.
(Picture: Sewage foam in aeration tank)
The harm caused by the sewage foam in the aeration tank
If the foam in the aeration tank is not treated in time, it will cause harm to the water treatment system, affect the normal display of the instrument, cause system operation errors, and bring difficult errors. The enrichment of foam on the water surface will affect the oxygenation efficiency of the aeration tank and hinder normal aeration and oxygenation.
Nanhui defoamer manufacturers have developed customized aeration tank defoamers to eliminate all kinds of bubbles in the aeration tank in view of the easy foaming characteristics of the water treatment process. Moreover, it has rich application experience in the water treatment industry. This water treatment defoamer is developed by professional defoamer engineers. It contains polyether, silicone and other ingredients. It is a modified silicone polyether defoamer with good overall performance. It has low surface tension and strong spreading performance. It can be spread quickly when it is put into sewage foam. After the defoamer is added, the foam is fleeting, and contains anti-foaming ingredients, which can inhibit foam for a long time and prevent foam regeneration. .
(Picture: Sewage foam hazard in aeration tank)
Advantages of Nanhui aeration tank defoamer:
1. Fast defoaming, low dosage and high cost performance;
2. Factory direct sales, one-to-one technical support; free samples;
3. Good comprehensive defoaming performance, fast dispersion, and longer foam suppression time;
4. Simple to use, will not affect the separation of mud and water, which is beneficial to water recycling;
5. Nanhui defoamer manufacturer customized, good after-sales service, trustworthy.
(Picture: Nanhui aeration tank defoamer)
The source manufacturer of Nanhui defoamer can solve various industrial foam problems in a targeted manner. If you encounter bubble problems in related industries, please call Nanhui Technical Specialist, Ms. Yoyo 0086 134 2860 1010.
