During the processing of soybean products, a large amount of organic wastewater is generated, which is mainly divided into three parts: soaking water, production cleaning water, and yellow slurry water. Overall, the amount of sewage discharge is large, with high organic matter concentration, complex composition, and relatively high COD. In addition, the amount of wastewater from soybean processing will also vary depending on the size of the enterprise
According to customer requirements, this design adopts the air flotation method. The air flotation process uses small bubbles as carriers to adhere and remove small oils and suspended solids from wastewater, achieving preliminary purification of water quality, creating good conditions for subsequent biochemical treatment units, and reducing the treatment load of subsequent biochemical stages. The pollutants in sewage are divided into dissolved organic matter and insoluble substance (SS). Under certain conditions, dissolved organic matter can be converted into non soluble substances. One of the methods of sewage treatment is to add coagulants and flocculants to convert most of the dissolved organic matter into non soluble substances, and then remove all or most of the non soluble substances (SS) to achieve the goal of purifying sewage, The main method of removing SS is to use air flotation. After the dosing reaction, the sewage enters the mixing zone of air flotation and comes into contact with the released dissolved water, causing the floc to adhere to fine bubbles before entering the air flotation zone. Under the action of air buoyancy, the floc floats towards the water surface to form scum. The clean water in the lower layer flows to the clean water tank through a water collector, and a part of it flows back for dissolved air use. The remaining clean water flows out through the overflow port. After the scum on the water surface of the air flotation tank accumulates to a certain thickness, it is scraped into the air flotation machine sludge tank by a foam scraper and discharged. Air flotation machine is a commonly used solid-liquid separation equipment, suitable for applications in various industries such as suspended solids separation, oil-water separation and purification, coagulation reaction floc separation, and activated sludge separation. Air flotation machines are also widely used in chemical industry, beverage industry, printing and dyeing industry, oil refining industry, electroplating industry, food industry, textile industry, slaughtering industry, leather industry, dairy industry, and other fields. In these industries, air flotation machines can effectively separate suspended solids, oils, and other substances in solid-liquid mixtures, purify wastewater, and achieve environmental protection goals. Air flotation machine is a commonly used solid-liquid separation equipment, suitable for applications in various industries such as suspended solids separation, oil-water separation and purification, coagulation reaction floc separation, and activated sludge separation.
Air flotation machines are also widely used in chemical industry, beverage industry, printing and dyeing industry, oil refining industry, electroplating industry, food industry, textile industry, slaughtering industry, leather industry, dairy industry, and other fields. In these industries, air flotation machines can effectively separate suspended solids, oils, and other substances in solid-liquid mixtures, purify wastewater, and achieve environmental protection goals.
Post time: Oct-25-2023