Professor Cai Hong morning at the study, fully degradable plastics that already exist, but all used in the medical scope. For instance, bio-plastics have been used in medical surgical wounds, this line of plastic surgery can be gradually absorbed by the body to relieve pain of suture removal; In addition, self-destructive use of biological medicinal plastic capsule, in the body will slow slow dissolution, can control the speed of drug entered the blood stream. However, this type of plastic with a biology Achilles heel - cost. "Medical Biology plastic prices are ten times that of traditional plastics, and even higher, so it is difficult to promote." Tsai Hong-express. 16 years ago, Tsai Hong came to the Hong Kong Polytechnic University to conduct research in related fields.
One day he walked into a magic biochemical laboratory, found both inside the pond is only separated by a wall, one of which is red toilet water, the other is through a series of purification, the flow out of pure water, these without clean water Inflatable to the boil, you can directly drink. Thus, Professor Cai think every day to deal with their sludge: the likelihood of flushing water into pure water, the microbial activity of sludge can be converted into fully biodegradable plastics do?
Say that he and the major sewage treatment plant in Hong Kong contact, asking for free activated sludge. Wastewater Treatment Plant in Hong Kong people seem to, either there is no activity in the sludge, are worthless, are to be dragged landfill trash heap fields, that is, someone ran necessary, they shall certainly be happy to hand over.
Recently, in cooperation with Professor Cai Wuxi General Qianqiao sewage treatment plants, reporter personally witnessed how access to the sludge from the wastewater treatment plant. Reporter eyes can see the three side-by-side pool of sludge, each the size of a standard pool. The first pond the water is deep brown, bubbles, braving a steady flow, issued a sound; the second for the turbid brown water; the third is light yellow.Inflatable Except on Vision of the "pollution", the air from time to time rancid flavor. Professor Cai told reporters: "the three separately pond used to violence gas, and rule out the possibility of settlement and water, after several rounds of the cycle, we can at the bottom to obtain the third pond bottom sludge."
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