A billion cockroaches who specialize in kitchen waste digest 50 tons of kitchen waste every day.

The 1 billion cockroaches that eat kitchen waste have lived on Earth for 300 million years, and dinosaurs have been in the same era as cockroaches, because of their tenacious vitality, known as "the hard-hitting little strong", but its reputation has been poor.
now, cockroaches are fighting a reputation war at the kitchen waste disposal center in The Zhangqiu district of Jinan.
here, a cockroach called the American Big Mac eats 5 percent of its body weight every day, and a billion cockroaches rely on their own home-watching skills, "eat", to digest 50 tons of kitchen waste in Zhangqiu district every day.
1 billion small strong "live in a mansion to eat a big meal" into the dark, humid, with 30 degrees Celsius high temperature of the breeding room, a heat wave and strong smell came.
covers an area of 6,300 square meters, the size of a football stadium that meets the international competition standards.
3.7 cm long and 1.5 cm wide, and live here with a red-brown, six-legged, two long tentacles.
the "luxury house" of the little strong people has been divided into 60 small rooms.
each room has six columns, a total of 2,200 high 1.8 meters, 0.71 meters wide ripple board, small strong in this "stand."
between the two corrugated plates, is the six-story "table" of the little strong, 25 cm apart from the layers, each layer between the gaps staggered.
there are three "tables" like this, and when food is fed from top, it falls from top to bottom.
at 9 a.m., the American big boys' "takeaway" - a vehicle full of kitchen waste - drove into the processing center.
and the earliest daily "snacks" will be sent from The Zhangqiu District Sanitation And Care Center at five or six o'clock in the morning, two or three cars at a time, 5 tons to 8 tons per vehicle.
here to feed cockroaches five times a day, in addition to three meals in the morning and evening, there are afternoon "plus meals" and midnight a "night meal."
hungry American big boys gathered around the food, the big fast.
small strong do not compete, eat full to rest on the side, the companion to the relay.
the garbage sent, first to go through a pre-treatment.
the garbage in the water and oil seepage collection, solid material through the conveyor belt upward transport, staff will chopsticks, glass, plastic and other cockroaches difficult to swallow impurities picked out, the remaining organic matter through the machine squeeze, crushing, stirring, forming a viscous slurry, and then according to the taste of the cockroach, add grease, water or straw powder, sawdust, to ensure water content 70% - 80% of the viscose consistency, through the pipe.
discovered that the American Otsuka this food attribute, is the head of the kitchen waste disposal center, Shandong Qiaobin Agricultural Science and Technology Co., Ltd. Chairman Li Yanrong.
8 years ago, he found that more than 300 people in the unit canteen kitchen garbage can not be disposed of, water feed pigs will have the risk of homogenous pollution, and trench oil is banned as explicitly prohibited.
and go directly to landfill, which in turn pollutes the environment.
Li Yanrong remembered watching an animated film about cockroaches with his daughter.
"cockroaches have a nickname called oil-stealing", love oil and corruption.
, he moved the idea of letting cockroaches eat kitchen waste.
at home and abroad, the practice of using insects to dispose of kitchen waste has long been in place.
during the 2000 Sydney Olympics, the organisers used millions of moths to degrade waste such as plant waste, food residues and paper.
in recent years, black otters, flies, yellow powder worms, etc. have also been requisitioned to eliminate kitchen waste.
so-called kitchen waste, mainly refers to restaurants, canteens and other production of a relatively concentrated set of leftovers, the family's kitchen garbage is called kitchen waste.
2010, Zhangqiu began to collect and transport kitchen waste in the jurisdiction.
"With this tiny animal, the outstanding advantage is the relatively adequate use of organic matter in the kitchen waste," and the low cost, but also to produce higher value-added protein feed, Beijing University of Commerce and Industry School of Food School of environmental science and engineering professor, China Urban Environmental Health Association, the director of the culinary waste committee director Ren Lianhai explained to China Newsweek. li Yanrong,
, believes that black otters, flyflies, yellow powder insects are completely perverted insects, only larvae to eat kitchen garbage, eating time is short, small amount of food, therefore, he is more optimistic about cockroaches.
Li Yanrong found a cockroach egg, made five goldfish bowls, at home to raise the American giant.
more than twenty days later, the larvae were born.
Li Yanrong fed it the unit's leftover food, and the cockroaches were collected in full.
he bought Mao Blood from the restaurant again, and the American big man still came without rejection.
he also gave cockroaches a variety of "flavors" such as covered meals.
"I raise cockroaches, China's eight dishes are all they have eaten, what taste is accepted, not picky food."
," Li said. After
attempt, Li Yanrong expanded the scale of farming, moving the breeding base from his family to a hillside south of Zhangqiu.
2014, he began a pilot study of the daily disposal of 1 ton of kitchen waste, and the Zhangqiu District Sanitation Center in Jinan City began supplying raw materials to Li Yanrong.
2016, Li Yanrong raised 300 million cockroaches, can handle 15 tons of kitchen waste per day, the government provides paid land, Zhangqiu sanitation center and Qiaobin Agriculture jointly listed the establishment of Jinan City Zhangqiu District kitchen waste treatment center.
the expansion of the Legion of Food, the workers feed the cockroach tools from small spoons to large spoons, and then into pots, barrels, until into the machine rearing.
the breeding capacity of the American big slugs is considerable.
an egg can hatch 16 larvae in 28 days at a temperature of about 30 degrees C, the larvae can eat kitchen waste, after three or four months, the larvae become insects, adult 48 hours later, the American python can lay eggs, once in two days, the life cycle of the adult insect is 10 -14 months.
now, Li Yanrong under the "thousands of troops" can digest 50 tons of kitchen waste per day, accounting for 83% of the daily kitchen waste produced in Zhangqiu District.
when the life of the Great American Python comes to an end, it slips off the vertical ripple board and the insect bodies, eggs, and feces are collected separately by the machine.
insects after 300 degrees C high temperature sterilization, drying, can be made into protein feed additives, eggs used to incubate the new force, feces used as organic fertilizer.
Li Yanrong's original idea, according to the daily disposal of 100 tons of garbage calculation, 208 yuan per ton of government subsidies, the annual production of insect protein feed up to 2433 tons, excluding fixed investment of 30 million yuan and labor, utilities and other costs, the treatment center a year about 37 million yuan net income.
However, the current government subsidies have not yet been in place, Li Yanrong has a new plan to raise chickens to internaldigestiing cockroach feed, the formation of an industrial chain, to earn more profits.
the question of biosecurity of such a large-scale legion of strong, it is inevitable that people will be "thinking very scared."
in the body of a cockroach and the gut, can carry more than 40 kinds of pathogenic bacteria including plague bacteria, dysentery, E. coli, poliovirus, etc., from a cockroach's tentacles, feet and digestive tract can be isolated tens of thousands of bacteria.
exposure to cockroach secretion excreta, vomit, body surface pathogenic bacteria, people will get dysentery, diarrhea and other intestinal diseases, but also allergic, asthma or allergic dermatitis, rhinitis and so on.
in the leftovers, smelly kitchen garbage, the American python will be mixed with the flow of pollution, poison or poison not invasion, to poison? "Long-term evolution has made cockroaches have a relatively rich antibacterial antimicrobial substance. Liu Zewen, a professor at the School of Plant Protection at Nanjing Agricultural University,
, explained that the antimicrobial peptides in the body of the cockroach will kill many germs, and there are various symbiotic microorganisms in the digestive tract, which can also help resist foreign germs.
fact, because of this quality of cockroaches, cockroaches have been in the drug for some time.
in modern research, by extracting the active ingredients of the American python, the development of rehabilitation of new fluids, heart pulse injections and other drugs, to treat stomach bleeding, ulcers, heart failure and other diseases.
the Americas is also used to develop cosmetics and daily chemicals, with anti-wrinkle, plaque and other effects.
data show that there are 400 cockroach farmers in Shandong province alone.
the world's largest cockroach breeding base, is China's Sichuan good doctor sorority medicine american drug animal breeding base, the breeding of 6 billion American big grasto.
liu Qiyong, director of the Vector Biological Control Department of the China Center for Disease Control and Prevention's Center for Disease Control and Prevention, observed that the probability of eating kitchen waste containing malignant viruses is small, but it is still not possible to rule out the possibility that cockroaches carry heavy bombs such as hepatitis virus.
Liu Xiaomei of the Ggangzhou District Center for Disease Control and Prevention in Zhangyi City, Gansu Province, and others have done an analysis of the situation of cockroaches, from the food and beverage enterprises sampled cockroaches, detected to carry positive for hepatitis B virus. Liu Qiyong,
, believes that for the farm staff, to do a good job of labor protection, including wearing gloves, masks, goggles, etc. , to avoid human infection with pathogenic bacteria, leading to the spread of disease in people- . Mo Jianchu, a professor at the Institute of Entomosciences at Zhejiang University's School of Agriculture and Biotechnology in
, suggests that inter-farm air can be regularly disinfected with ultraviolet light.
an industry insider who did not want to be named, for the Americas, there are further monitoring and research questions are: long-term kitchen waste for a living, will cause metal elements in the cockroach body enrichment, and thus make protein feed heavy metals exceed the standard, and further pass in the food chain; And the public's biggest concern is: such a large number of small, once a large area of escape how to do? Public information shows that the American big twin wings, flight ability is not strong, but the speed of running is fast, is considered to run one of the fastest insects.
According to a study conducted by the University of California, Berkeley, the American slug crawls at speeds of 5.4 kilometers per hour and can run 1.5 meters per second, about 50 times its length.
cockroaches are extremely resilient and can survive for a month without food, and for a week when there is no water.
at the Zhangqiu Kitchen Waste Treatment Center, Li Yanrong set up a triple anti-escape measure for the American Daiao.
each cubicle window is all sealed with stainless steel mesh to achieve first-level protection, the gate of the breeding room is equipped with a water curtain, under the water curtain has a fish pond, cockroaches from the small compartment escape, will be washed to the pool to feed fish, this is the second layer of fortress;
Mo Jianchu believes that from the normal protection, as long as these measures strictly do, can avoid cockroach flight, but from an industry point of view, this is not enough, there must be a plan to deal with sudden situations.
"afraid of the occurrence of accident states, such as earthquakes or other force majeure, etc., " Ren Lianhai has the same concerns, even if human error, there will be cockroachescape, "once leaked out difficult to control, there may be some ecological safety problems.
" Liu Qiyong said, such as the biological industry, first of all to do a good job of risk assessment, the breeding room itself earthquake-resistant, disaster-resistant design to have a certain guarantee.
once the cockroach escapes out, the surrounding environment is what, what the cockroach eats, what kind of disease will spread is the problem to face.
he suggested that farms should be equipped with cockroaches' automatic killing devices, immediate spraying of insecticides, cockroaches even if they can escape, will not run far, "control the risk, this is the key." Zhou Xingmiao, an associate professor at the School of Plant Science and Technology at Huazhong Agricultural University in
, believes that a standardized operating process is needed for this new industry, from production to regulation. how far is it
to eliminate kitchen waste? In addition to biosecurity, cockroaches' handling of kitchen waste is also a concern.
to the current domestic and foreign mainly used anaerobic fermentation biogas technology, for example, the same area of 6300 square meters, can achieve hundreds of tons of kitchen waste daily processing capacity, several times the capacity of cockroaches. Jiang Jianguo, a professor at the Institute of Solid Waste Control and Resourceization at Tsinghua University's School of Environmental
Science, said that treatment techniques and floor area are two major factors to consider in the process of kitchen waste disposal.
in the processing hours, cockroaches will have certain advantages, if you want to increase the processing capacity, it is bound to expand the area of breeding, so that overall, cockroaches to eliminate the limited capacity of kitchen waste.
in first-tier cities such as Beijing and Shanghai, more than a thousand tons of kitchen waste are produced every day, and even in cities with a population of 45 million, there are four or five hundred tons of kitchen waste.
"the things of the minority, it is difficult to solve the big problem," said Zhang Jinfeng, deputy general manager and technical director of Jiangsu Wirley Environmental Technology Co., Ltd., adding that it is not realistic to eat food and kitchen waste entirely on cockroaches.
"cockroaches can only eliminate the organic quality of kitchen waste, from an environmental point of view, we are concerned about how kitchen waste can be completely solved, this is more central.
," Jiang Jianguo said.
to use these tiny animals to degrade kitchen waste, one of the problems to be cracked is to achieve mechanization, automation, large-scale farming.
in Zhang Jinfeng's view, compared with the mature industrialization process of anaerobic fermentation, the way insects deal with kitchen waste is still in the local automation, even "hand workshop" stage.
and once system-wide automation, costs and benefits are re-evaluated.
" insect mobility is relatively strong, the original (some people) keep flies, found that the worm along the conveyor belt climbed into the gear, cockroaches are also the same, will run to some dark places, it is more difficult to circle in a controlled space.
" Ren Lianhai said that from the current point of view, the use of insects to deal with kitchen waste can only be used as an auxiliary means, when the technology matures, the scale increases to a certain extent, may be one of the mainstream technology, but will not replace all other technologies.
, the composition of kitchen waste varies from city to city.
at present, the country every day there are 150,000 tons of kitchen waste produced, the annual 60 million tons of urban kitchen waste needs to be degraded.
in China, kitchen waste disposal started late.
2010, the National Development and Reform Commission, the Ministry of Finance, the Ministry of Housing and Construction launched the national kitchen waste resource utilization pilot city construction, after the next 5 years, a total of 100 cities were selected, and has established the Ningbo model.