5results about How to "Low ecological impact" patented technology

The invention discloses a construction method of a tunnel pipe roofing structure, and relates to the technical field of tunnel pipe roofing construction.The construction method comprises the steps that a pipe body group is jacked into a tunnel wall, and high-strength steel bars are used for restraining the pipe body group to enable the pipe body group to be tightly attached; the pipe body groups which are tightly attached under the tension of the steel bars can provide bearing capacity and play a role of a waterproof curtain at the same time. Meanwhile, in order to guarantee good fitting of the pipe body groups, on the tunnel section, the steel bars pass through the steel pipe walls and the circle center of the section to connect the pipe body groups into a whole. In the axial direction of the tunnel, a plurality of annular steel bar structures are arranged at intervals, and it is guaranteed that the pipe body group does not deflect while being drawn close. The method has the outstanding advantages of being high in construction practicability, convenient to control construction quality, good in reinforcing effect, particularly good in water stopping effect, safe, reliable and the like.

The present invention discloses a biological treatment device for chlorine-containing organic volatile pollutants and its application. The biological treatment device for chlorine-containing organic volatile pollutants provided by the present invention comprises an air intake pipe 1, a biological treatment box and an exhaust pipe 2. According to the direction of the inflow of chlorine-containing organic volatile pollutants, the biological treatment box is provided with: a biological filter bed 3, a biological filter bed spray system 4, a growth-promoting bacterial community silo 5, and a silo spray system 6 from bottom to top; the growth-promoting bacterial community flows into the biological filter bed 3 below with water, and is used to supplement the growth-promoting bacterial community in the biological filter bed 3. The present invention realizes the biological treatment of chlorine-containing organic pollutants by biological methods by continuously supplementing the growth-promoting bacterial community in the biological filter bed. The treatment device can realize pollution-free, low-cost and high-efficiency treatment of chlorine-containing organic pollutants; the final chlorine-containing product is an inorganic chloride salt, which has a very low impact on the ecology, and the energy consumption of the device is extremely low when in use; it can treat chlorine-containing organic pollutants up to 656ppm.

This invention provides a method for controlling Spartina alterniflora and promoting natural mangrove restoration based on rolling mulching and in-situ mud slurry, belonging to the field of ecological control technology. The method involves mechanically rolling Spartina alterniflora to flatten most of it and press it into the tidal flat soil. Then, a biodegradable mulch film is laid on top, and mud slurry is extracted and applied to form a mud slurry cover layer. A mangrove seed interception and planting device is then installed on the mud slurry cover layer to prevent mangrove seeds from growing naturally, thereby reducing the cost of Spartina alterniflora control and improving the efficiency of Spartina alterniflora control.

The present invention provides a rock fissure water collection device, belonging to the field of rock fissure water collection technology. It includes: a collection mechanism, used to collect rock fissure water, whose outer wall is covered with a first water collection layer; a support and protection mechanism, whose interior is hollow to form a receiving space, one end of the support and protection mechanism is connected to the collection mechanism, and the outer wall of the support and protection mechanism is covered with a second water collection layer, and the first water collection layer and the second water collection layer do not contact each other; a negative pressure storage mechanism, which is connected to the collection mechanism through a liquid delivery pipeline, a part of the liquid delivery pipeline is located in the receiving space, and the rock fissure water collected by the collection mechanism is transported to the negative pressure storage mechanism through the liquid delivery pipeline under the negative pressure of the negative pressure storage mechanism for storage. The present invention has the advantages of simple structure, low cost, good fissure water collection effect, can quickly capture fissure water samples after rainfall, high stability, easy to carry, easy to use, and can meet the needs of collecting fissure water of different depths in karst areas.

The application discloses a medical instrument biofilm prevention system based on low-energy surface acoustic waves and relates to the technical field of medical instrument protection. The technical scheme is as follows: a piezoelectric vibration module is attached to or integrated with the wall part of an indwelling medical instrument, vibration is uniformly transmitted to the whole surface of the instrument, a vibration transmission module for exciting composite surface acoustic waves is arranged, a drive control module for outputting rectangular electric pulses and adjusting the power density of the instrument surface to be accurately maintained is arranged, and a power module is arranged. The application can reduce the biofilm load to 0.75-1.22 log 10 CFU / cm 2 At the same time, the urine sterility time is prolonged from 2 days to 9 days, and the infection time is delayed to the 7.3th day. The physical method adopted in the application is reversible, non-toxic and non-drug-inducing, is effective on a wide range of bacteria and fungi, does not cause tissue damage, and is suitable for catheters, central venous catheters and various indwelling instruments.