"Pre-made dishes" have been in the dust for more than half a year, which is nothing new for the public, and recently the major "pre-made dishes" brands have started Chinese New Year's Eve meal marketing, and the topic of "pre-made dishes to seize the table of Chinese New Year's Eve rice" has caused a lot of heated discussions. Whether pre-made dishes can really dominate the Chinese New Year's Eve dinner table is still unknown, but behind itWater pollution issuesExposure has already begun.
The production process of prefabricated dishes will produce correspondinglyFood processing wastewater。These wastewater ** in the cleaning of raw materials (higher concentration of suspended solids), processing and production process (higher concentration of organic matter), product molding stage, etc., the amount of wastewater generated, it is understood that some prefabricated vegetable factories can produce up to 3,000 tons of wastewater per day.
Food wastewaterThe composition of the wastewater is very complex, including organic matter, fat, protein, carbohydrate, etc., and the concentration and variety of these components may vary with the change of different food production processes. In particular, greases tend to form scum and proteins can easily coagulate during processing, leading to equipment clogging and reduced process efficiency.
Overcoming these difficulties requires a combination of applicationsAdvanced wastewater treatment technology, including physical, chemical and biological treatment methods, as well as suitable treatment equipment.
Taking Nanjing Osmanthus Duck (Group) ** integrated sewage treatment project as an example, it is designed for food wastewaterThe daily processing capacity is 450 tonsBecause the original sewage station adopts the type of buried steel concrete pool, it is difficult to maintain and transform, so the integrated food wastewater treatment equipment is adopted, which not only solves the dilemma of the project's land shortage and difficult transformation, but also further ensures the long-term stability of the wastewater for the project.
In view of the characteristics of high oil and high salt in osmanthus duck production wastewater, the main body of the equipment is adopted"High-efficiency air flotation + hydrolysis acidification + contact oxidation + MBR".Through the treatment of two-stage AO+MBR process, most of the COD and ammonia nitrogen in the wastewater can be degraded, and the water quality after treatment is stable to meet the requirements of the B-level standard in Table 1 of the national "Water Quality Standard for Sewage Discharge into Urban Sewers" (GB T 31962-2015), which can be directly incorporated into the sewage pipe network for discharge.
At the same time, the operation and maintenance part of the sewage station can be carried onSmart water platformReal-time monitoring of background equipment operation, effective remote monitoring, fault warning, material shortage alarm and emergency operation. All-in-one equipment adoptionFully automatic design, one-key start and stopIt also avoids the hidden danger of manual operation to a greater extent.
Case name: Nanjing Osmanthus Duck Group integrated sewage treatment system installation and operation and maintenance project
Project Location: Nanjing, Jiangsu.
Project scale: 450t d
With the continuous improvement of food processing technology, we can have more food enjoyment, but at the same time, the pollution problem of food wastewater can not be ignored.