In Beijing, for example, there are nearly 50,000 hotels, restaurants and canteens, and 50 percent of the nearly 1,000 tons of swill produced every day is fished away by private individuals. According to the National Cereals and Oils Standardization Committee oilseeds and fats working group experts estimate that China's current annual return to the table of the gutter oil has 2 to 3 million tons. To the Chinese people a year fat (including animal oil and vegetable oil) consumption of 22.5 million tons of calculations, eat 10 meals may have 1 meal to touch the gutter oil.
Medical research has shown that long-term intake of gutter oil will cause great harm to the human body. It can lead to developmental disorders, susceptibility to enteritis, enlargement of the liver, heart and kidneys as well as fatty liver and other lesions. It should be noted that aflatoxin is one of the main hazardous substances in gutter oil, and the toxicity of this strong carcinogen is 100 times that of arsenic.
Government centralized acquisition
Why is gutter oil prohibited? On the one hand, and the refining of gutter oil profits. From the catering industry in the kitchen waste refining 1 ton of gutter oil, the cost of only about 300 yuan. Engaged in this "profession" people pull out a barrel of gutter oil can earn a net 70 to 80 yuan. If you pull out 4 barrels a day, after recycling and refining, only half of the market price of cooking oil to sell, you can earn more than 10,000 yuan a month.
The more important reason is that the investigation and punishment of gutter oil is weak. Supervision involves health supervision, food safety, industrial and commercial management, quality supervision, environmental protection, public security and construction of a number of departments, in fact, the division of labor has become a division of home, multi-headed management makes who all have the responsibility to become who all have no responsibility. As the solution of gutter oil in many places is not included in the assessment index system of government departments and government officials, the system of rewards and punishments, so the lack of active governance conscientiousness. Although the "food production and management units of waste edible oil and grease management regulations" expressly prohibit the processing of waste oil and grease activities of the unit shall not be waste oil and grease processing and then used as edible oil and grease or sales, but how to penalize the lack of specific provisions, lack of operability. It is because of the kitchen waste treatment on the "anarchy" state, to some unscrupulous traders to provide a large-scale "gray industry" space.
Scientists are working to find an effective means of detecting and identifying gutter oil, but they believe that the key to the governance of gutter oil also lies in government management, and is not a means of detection or the development of relevant standards can be decided. The experts envisioned that the government must centralize the purchase and treatment of kitchen waste to eliminate gutter oil at the source.
Japan's successful experience may be able to give us inspiration. 1960s, gutter oil in Japan caused great trouble, seriously affecting people's safety and health. Later, the Japanese government took effective measures to make gutter oil this big problem has been fundamentally solved. Now, there is no place to buy gutter oil in Japan, and even if you try hard to get it, it is not possible to process the confectionery.
First, the government recovers the gutter oil at a high price, paid for by environmental money from the cleanup of gutter oil. The high recycling price discourages unscrupulous manufacturers, who have no choice but to give up buying gutter oil because it's unprofitable, which cuts off the flow of gutter oil to society at the source.
Then, then the refined gutter oil used as fuel for garbage trucks, garbage trucks are a kind of fuel-consuming tools vehicle. Even if you buy this oil at a fair price, it is still much more expensive than gutter oil. As a result, the huge amount of money completely saved by the use of recycled gutter oil can reduce the overall administrative expenses. In addition, castor oil products are added to garbage truck oil made from gutter oil to make it completely inedible.
Gutter oil itself, if not recycled, will flow into the river and cause environmental pollution, but the cost of recycling is quite staggering. How to do? Practice has proved that "garbage trucks burn gutter oil" into treasure, one to ensure that the Japanese government and recycling companies win-win, environmental protection, and the people can rest assured that no longer have to worry about eating gutter oil. This is really a two-for-one, cheap and effective ban on gutter oil.
Converted into biodiesel
To completely solve the problem of gutter oil, the key is to plug and combine. Local governments can formulate policies to purchase gutter oil, establish a production system to convert gutter oil into biodiesel, and promote the widespread use of biodiesel in urban public transportation.
Research has found that gutter oil is a good raw material for making biodiesel. This kind of biodiesel and the use of ordinary diesel fuel is exactly the same, the price is not higher than the general gasoline. The fuel has the following characteristics: the use of diesel vehicles in the full combustion, good environmental performance, emissions in the exhaust does not contain sulfur dioxide, but also greatly reduced hydrocarbons and carbon monoxide, can greatly alleviate the problem of air pollution in the city. If you add 20% of biodiesel in gasoline, you can make carbon dioxide emissions, sulfur dioxide emissions and air toxicity were reduced by 50%, 70% and 90%.
Foreign countries are also actively engaged in research and development in this area, and the results are remarkable. In Mexico, a renewable energy company's scientific and technological personnel with raw materials for swill, processed into biodiesel, success.
The company sent every day to the restaurant produced a large number of waste slop collection, filtering, will be inside the debris and waste oil separate. When the waste oil left behind is stocked in sufficient quantities, it is sent to a chemical reactor for treatment, and what comes out is turned into grease. Then the grease flows into a stirrer called a magnetizer, and is heated to 50°C while being stirred by a magnetic rotor, and becomes mixed
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