Professor ZheDa collects garbage and makes millions of netizens every year: Reading more makes a lot of money.

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Professor ZheDa collects garbage and makes millions of netizens every year: Reading more makes a lot of money.

2019-04-07 08:03:37 678 ℃

The original title: Professor ZheJiang University collects garbage and makes millions of netizens annually: Reading more makes a lot of money

Guide reading

This is a small farm located on the canal road of Chongxian Street in Yuhang, Hangzhou. The farmer is Zhang Zhijian, associate professor of the School of Environment and Resources of Zhejiang University and vice director of the Institute of Environmental Health. Although the place is not big, but the annual income can reach millions, and rely on garbage!

Summer 2018, Professor Zhang collected garbage and raised insects on insect farm farmland

to "collect" garbage and raise insects. Kitchen garbage is totally eliminated by it

< section> < section> < p> although close to the main traffic lane Tranquility is the chirping of birds. There are many birds on the farm, but they are not afraid of people. The reason is that there are plenty of food sources for birds: insects. Where did the worms come from? The secret was hidden in the greenhouse where birds piled up in the middle of the farm.

coincidentally, an uncle riding a tricycle entered the farm and shouted at his throat, "Hello, garbage collection!"

Zhang Zhijian rushed to help, pushing the garbage cart into the first greenhouse in the west. Uncle

is a cleaner in a nearby village. His car is loaded with kitchen waste from his neighbors'houses. Villagers will consciously classify kitchen waste in place, from uncle to farm dumping every day. There are 13 greenhouses for garbage disposal. In the first greenhouse, there is a funnel-shaped equipment. After the garbage is dumped into the greenhouse, it will be crushed, stirred, and fermented overnight with probiotics, and it will become the insect "ration" suitable for the hatching and growth of insect eggs. From the second greenhouse,

is the area of transformation and decomposition of insects. On the ground of the shed is a row of aquaculture tanks with a layer of treated kitchen waste, which looks a little like soil. With a shovel to move this layer of "soil", there will be creeping white worms, dense.

The larvae of the black water beetle decomposing kitchen waste are the magic weapon of decomposing kitchen waste, named the black water beetle (scientific name: Lightspotted flat-horned water beetle). Why does Professor Tangtangtang Zhejiang University run to the countryside to collect garbage and raise insects?

Zhang Zhijian admits that how to deal with garbage is the direction of his scientific research.

In greenhouse greenhouse, some adult black water beetles are flying.

It is the size of three or four flies. It is black all over. It looks a little dull and lazy. It doesn't like flying.

Blackwater Tadpole Adult

Originally, Blackwater Tadpole Adult hardly eats and does not move, and the adult will mate, lay eggs and die within a week, completely unlike flies.

< p> Each black water beetle lays about 1000 eggs and dies immediately after laying eggs. The adult life span is only one week. It takes 12-14 days for the eggs to hatch into larvae to grow into pupae. During the larval period of

larvae, the farm black water tadpoles grew up by eating kitchen waste.

From egg growth to pre-pupation larvae, their weight will increase by 2,000 times, and the weight of 2,000 larvae is about 0.5 kg. The temperature of

in early spring was not high, but the temperature of kitchen waste in greenhouse aquaculture tank was over 30 C. Because larvae decompose garbage to produce a lot of heat, even in cold winter, the temperature can reach 30 degrees Celsius. After 12-14 days of decomposition, the greasy components and nitrogen, phosphorus and other substances in kitchen waste were basically absorbed by larvae. They grow fat, and their excrement can be made into green organic fertilizer, which is organic manure from tadpole dung. The next thing we need to do is separate the larvae from the organic fertilizer.

organic manure of tadpole dung

The operation is simple. Workers spread the raw materials of kitchen organic manure with a large number of larvae on the screen, and the photophobic larvae will consciously drill into the raw materials of organic manure, leak from the sieve to the lower container, and separate them clean.

In the farm, rapeseed and loquat trees were planted with organic manure from the dung of Tabanus nigra after it was converted into kitchen waste. The farm also sends organic fertilizer to the residents nearby. They use it to grow rose, which blossoms a lot.

and the farm turkeys and fish and shrimp ate the larvae of the black water gadfly.

Grazing chickens fed with larvae of Blackwater Tadpole

10 tons of kitchen waste, can reap 1.2 to 1.5 tons of Blackwater Tadpole larvae, and produce 2-3 tons of organic manure of Blackwater Tadpole dung.

3 tons of fresh insects are dried to 1 ton of dried insects. It is rich in antimicrobial peptides, polysaccharides, unsaturated fats, vitamins and other ingredients. It can be added to feed, and can be fed to fish, shrimp, chicken, duck and dog, cat pets. Can

Garbage Collection earn millions of dollars a year? Professor Zhang turned his dream into reality. In 2018, insect farms helped Chongxian Street digest more than 3,000 tons of kitchen waste. The black water beetles sold more than 10,000 yuan per ton and organic fertilizer 400-500 yuan per ton. Waste disposal is such a beautiful and lucrative undertaking.

Find the best stuff: After reading, just want to say, Professor Zhang! Take me! < p > < p > Qing Qinger: Reading more can make a lot of money indeed!

Mo Xiaoqi: Good! And cheat me to pick up garbage

dabby: Support Professor Zhang, support garbage classification, everyone should start from themselves!

Happy Life: Give Professor Zhang some praise, this insistence is not easy!

Responsible Editor: Ouyang Jianjun