Application of Zero Discharge Technology in Food Processing Wastewater Treatment-Ocpuritech-img

Application of Zero Discharge Technology in Food Processing Wastewater Treatment

by:Ocpuritech     2021-03-12
Food processing wastewater zero emissions technology applications author of the article: the food industry with a lot of high-quality and delicious food for our lives, it is precisely because it will emit large quantities of water in the production process, resulting in increased amount of food waste. If it is discharged directly into the environment, it will cause irreparable harm to the ecological environment, so it must be treated scientifically in order to achieve zero emissions. To solve the problem of food wastewater, the oil content reaches about 10%. The reason for the difficulty of treatment is that it contains a large amount of active agents, fine metal particles and suspended solids. For the treatment of this kind of food wastewater, several new processes can be adopted: (1) Membrane concentration-filtration combined process uses a membrane concentrator to concentrate the solution and discharge the solution, and then filter the concentrate containing flocs. The remaining filter residue after filtration can be used as an organic dye because it contains a large amount of organic matter. Use, while the filtrate is waiting for further processing. (2) Activated carbon adsorption process This treatment process exists for the treatment of filtrate. Activated carbon is used to absorb the filtrate of membrane concentration and filter water, and then purify it. The purified solution can be returned to the production process to be reconfigured. In this way, zero discharge of the wastewater treatment process can be achieved, and the benefits can be maximized. (3) Microfiltration-reverse osmosis treatment process In addition to using activated carbon to treat the solution, microfiltration and reverse osmosis technologies can also be used to deeply purify the filtrate. After the deep purification, the solution must be able to fully meet the standard, so that the solution can be returned to the production for reconfiguration, or it can be directly discharged without harming the ecological environment. (4) Electrolysis treatment process. This treatment process is to use a direct current electric field to destroy the polarity field on which various substances in the wastewater depend on the electric charge and potential difference, so as to destabilize the wastewater and force the toxic substances to be released from the state of wastewater. And through the specific soluble electrode to produce multi-nuclear coordination ions with agglomeration effect, so that the toxic substances will rise after agglomeration. Membrane concentration-filtration combined process, activated carbon adsorption process and microfiltration-reverse osmosis treatment process can not only break the waste water, but also make the purified liquid after the waste water meet the national first-level discharge standard, and discharge it into the environment. Will destroy the ecological environment. Good results achieved by using the above process to treat wastewater. Food wastewater contains a large amount of volatile organic compounds. Under the action of various factors, part of the decomposition products can volatilize into the atmosphere and destroy the surrounding atmospheric environment, and the oil will condense into oil masses in the water body, forming oil bumps and destroy Water environment.
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