With defoamers, wastewater treatment foam will no longer exist
Paper mill wastewater discharge has always been a more serious problem, thus wastewater treatment is also a point of concern. Said the treatment of wastewater, is the use of some physical, chemical and biological methods of wastewater treatment, in order to achieve the purification of water resources to reduce the discharge of pollution purposes.
Due to the rapid growth of urban population, industrial wastewater treatment problems are becoming more and more prominent. The paper mill wastewater emissions are large, so the national standards for wastewater discharge is also very strict control, which makes some paper mills in the wastewater discharge must be carried out when the wastewater treatment. Many factories said that in the process of wastewater treatment, there are often bubbles, so it will affect the breeding of organisms in the water, and the operating effect of the treatment process. In response to this problem, only need to add waste water treatment defoamer in the treatment of wastewater can be a good solution to a series of problems brought about by the foam.
Wastewater treatment defoamer, has a good defoaming speed, can be a lasting inhibition of foam. Foaming system for many industries are very good. For example, pharmaceutical, paper, leather printing and dyeing city sewage treatment process and chemical cleaning of the foam generated by the industry. Wastewater treatment defoamer using environmentally friendly formulations, the product itself is non-toxic and harmless, does not affect the characteristics of bacterial reproduction. Wastewater treatment defoamer is a kind of high-efficiency defoamer, which is mainly made of modified silicone polyether and modified siloxane compound refined by special technology.
What are the characteristics of defoamer for paper pulp?
The process of papermaking is mainly divided into two steps, one is washing pulp and the other is copying paper, no matter that step is inevitable to produce foam, so you need to use defoamer to deal with the defoamer is also a lot of classifications.
Pulping process due to the pulp contains fatty acids, resin acids and other natural substances, after cooking liquid, chemical washing will generate fatty acid soap, fatty acid soap and other foaming substances, a large number of bubbles will be followed by cleaning and transport and bleaching to bring some trouble resulting in a decline in the quality of the pulp, and therefore the need to use defoamer to deal with. Defoamer used in the pulp process mainly hydrocarbon defoamer and silicone emulsion defoamer two categories. This kind of defoamer can quickly eliminate the foam generated by lignin and some surfactants, and the effect is especially obvious in the pulping and washing.
For the papermaking process, if you do not solve the papermaking process foam, it will lead to paper breaks, white water level fluctuations, pump frequency fluctuations, etc., directly affecting the stability and quality of paper production. The paper defoamer can effectively inhibit white water foaming, while the fibre entrapped in the fine bubbles, the foam on the surface of the pulp can be eliminated. Defoamer can also dissolve the air within the pulp, eliminate the large bubbles on the water surface, which can avoid the formation of holes, reduce the paper breaks and overflow of the pulp storage tank, thus ensuring the loss of pulp fibres and chemicals, so that the uniformity and quality of the paper have been improved.
RISE Defoamer for paper pulp is mainly used to control the foam generated in the production of alkaline pulp, paper washing, bamboo pulp, cane pulp, neutral pulp, paper pulp, pulp rinsing, screening, bleaching, water treatment, and vegetable fibre pulp. Has the following characteristics:
1, strong defoaming and foam-breaking properties;.
2, fast and thorough improvement of filter drainage.
3, very good mutual solubility in black liquor, applicable to the production conditions of pulp mills.
4、Improve rinsing efficiency.
5、Reduce salt loss and improve pulp quality.
6, Reduce the content of bleaching chemicals, to meet the environmental requirements.
7, The raw material is biodegradable, non-toxic and harmless.
Antifoam agent defoaming effect affected by what factors
Defoamer and antifoam is widely used in various industries, the type of defoamer is divided into oil-based and water-based, different industries use different kinds of antifoam agent. Paper defoamer can effectively control the pulp, foam overflow and improve the quality of paper. Defoamer is widely used in paper making system defoaming, and can also be used in paper making sewage treatment, antifreeze, distillation system defoaming.
The use of defoamer
1、According to the foaming system of different dosage is also different, need to be tried to decide, generally in the proportion of 0.1% ~ 0.01%;.
2、Add the defoamer directly to the media environment to be used or diluted with appropriate amount of water to be used.
