Brazil has approximately 33,500 food companies, generating around 1.6 million direct jobs, according to IBGE. They totaled revenues of R $ 529.6 billion in 2014, making the food industry the most representative of the country in almost every aspect; among these, it is important to highlight the massive generation of waste and how to make this inevitable process more accurate and sustainable.
The industry and its waste
The main waste generated by the food industry are the industrial effluents (biological and chemical) and solid waste from the production of food. Each has a different form of treatment is required attention and specialized professional care, because they have substance highly pollutant that can harm the environment. Below are listed some of these practices and how each makes the end of the most sustainable and efficient production process.
The organic effluents which are liquid discharges resulting from production processes must be treated according to the concentration of organic matter possess. The slaughterhouses, abattoirs, and slaughterhouses are the largest generators residue, they are from floor washings, shipping boxes, slaughter room and the cooking water sausages, for example, and no treatment can lead, in addition, the proliferation of insects, rodents, and diseases a fine for holding an incorrect dumping of untreated waste into the environment.
The most used treatments for this type of waste are aerobic and anaerobic processes, which use biological agents such as bacteria, algae, and protozoans, to degrade organic matter in wastewaters.
The treatment of so-called industrial effluents, inherent in industrial processes or sewage, occurs on systems where the aeration is carried out by mixing and at the end of the process, the treated wastewater back to the environment according to the parameters established by environmental regulations.
Since solid waste is treated in a natural system called “compost” that stabilizes the breakdown organic matter, resulting in the end, a rich compound which is used as fertilizer in agriculture. In this type of waste entering expired food products, food waste from industrial processes, raw materials out of specification, among others.
In general, the waste that can be treated are:
Classified as waste:
- wastewater from the washing process of machinery and equipment;
- Effluent after physical-chemical treatment;
- biodegradable industrial wastewaters in general;
- Liquid from the industrial fat and bar box cleaning;
- ETE liquid biological sludge.
Classified as organic solid waste:
- Cake, peel fruits, and vegetables from the food processing;
- solid sludge biological WWTP, including toilets;
- Losers food products or out of specification;
- Leftover food from restaurants, supermarkets, ceasas, etc;
- Among others.
The agency responsible for environmental control in the State of São Paulo is the CETESB , an institution that requires analyzes and issues the license for the movement of waste between generators and disposal through a document called CADRI (Certificate Handling of Environmental Interest Waste ).
As companies often do not have space or do not want to invest in its treatment plant, it is common for them to outsource this service, facilitating the process and ensuring that they will be within the highest standards.
If you want to know more, please contact Tera, we have a technical support for the request of CADRI no cost, in addition to receiving wastewater services 24 hours a day, 7 days a week, ensuring that your company will not be discovered in time some.