Papermaking black water food waste turning waste into treasure

On August 31st, the Eco-Shandong Summit Forum and the Fifth Green Industry International Exposition were held in Jinan. At the Green Expo, many companies in the province are building a green recycling economy. Through technological research and development to turn industrial waste into green products, the road to turning waste into treasure has brought many surprises to the people.

Once papermaking wastewater turned organic fertilizer

People living near the Gaotang Spring Forest Paper in Liaocheng City thought that the wastewater discharged from paper mills would be turned into organic fertilizer, which would allow the wastewater to be purified and farmland irrigated. In Quanlin Paper Exhibition Hall, apart from all kinds of paper products, the most surprising thing is a bag of black particles. Guo Xiyan, head of the Wenlin Paper Group of Quanlin Paper, who was sponsored by the delegation, said that these products were extracted from black liquor from industrial papermaking.

The so-called black liquor refers to the waste water produced after the cooking of papermaking raw materials. In the past, these black waters were discharged after treatment. Even beforehand, they were discharged into rivers without any treatment and the pollution spread. Since 2000, Tranlin has begun thinking about how to turn waste water into something of value.

“Black liquor actually contains a large amount of organic ammonia. Organic ammonia is also the main component of organic fertilizer. We think there can be a good article in this green cycle.” After repeated arguments in 2003, Tranlin launched the straw black liquor. Processing system, this technology realizes the dream of converting black liquor into organic fertilizer. Around 2007, with the continuous advancement of scientific research and technology, this system has also gradually matured. Tranlin began mass production of organic fertilizers and started to use organic fertilizer as another major product after the paper products. Up to now, Quanlin organic fertilizer has reached an annual output of 400,000 tons, and is exported to more than 30 provinces across the country.

Catering waste is turned into gas and fertilizer

Among the many green companies exhibiting, attracting many eyeballs are several large machines placed in the middle of the exhibition hall. It turns out that this is the newly developed food and beverage sanitation treatment equipment that lasted 18 months. The machine adopts a customized sales method, which can determine the size of the machine capacity according to the scale of restaurant waste. The reason why this product is produced is to curb the food safety chaos that frequently occurs in recent years, such as “garbage pigs” and “oil waste”. "The disposal of catering waste has eliminated the production of waste oil from the source, so the entire food safety environment can certainly be purified."

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