What are the technical methods for treatment of oily wastewater treatment equipment?
The treatment technology method of oily wastewater treatment equipment? Author: people's living standards have been greatly improved, but we live in the environment has been severely damaged, while my country is also actively pursue a strategy of sustainable development, environmental awareness has also been gradually accepted by the people The general public has also paid more attention to our country's environmental protection work. Oily wastewater treatment is a complex system engineering. We should analyze the source and hazards of oily wastewater in detail, continuously optimize the treatment process of oily wastewater, and scientifically adopt the key treatment technology of oily wastewater to truly do a good job in the treatment of oily wastewater. Processing work. Here is a brief introduction to the process and technology of oily wastewater treatment equipment. Three aspects of oily wastewater treatment process and key technical methods for oily wastewater treatment are analyzed and discussed in detail, the source and hazards of oily wastewater, the process flow of oily wastewater treatment, and the technical methods for oily wastewater treatment. Coagulation method is mainly aimed at the separation of tiny suspended oil particles and colloidal oil particles in oily sewage. First, we should add a certain amount of chemicals to the oily sewage to make a sufficient chemical reaction. Afterwards, it will gradually condense into flocs or a relatively stable mixture; afterwards, we will add the coagulant to the sewage, so that the gelatinous oil particles in the sewage are no longer negatively charged. It is electrically neutral, flocculent polymers or stable mixtures will slowly sink. In the actual treatment process, we often use coagulants such as ferric chloride, basic alumina, aluminum sulfate and ferrous sulfate, and accelerated clarification tanks are usually used as structures. Filtration method The so-called filtration method means that the particulate matter in the oily sewage is intercepted under the action of the filter membrane, so that the oil and water can leave to achieve the ideal purification effect. In general, the filtration method should be the next-level treatment method of the coagulation method and the floating method. After the formation of a polymer or a stable mixture, the gelatinous oil stains in the sewage can be removed by the filtration method. With this treatment method, the oil content of the finished oily sewage does not exceed 10mg/l, and the pressure filter and the ordinary fast filter are usually regarded as structures. The management process using the filtration method is somewhat difficult, and hot water backwashing or reverse air aeration should be performed, otherwise the problem of filter material clogging is prone to occur. Air flotation method is mainly used to remove emulsified oil and smaller oil particles in oily sewage. The oil content of oily sewage treated by this method does not exceed 30mg/l. Its working principle is: first oily Pouring a certain amount of air into the sewage, so that a large number of bubbles will appear in the sewage, and the bubbles will also float up. At this time, an uneven system composed of bubbles, water and oil is formed. The bubbles will become more dense. The close oils are combined and move upward gradually to achieve the effect of oil-water separation.
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