ONLINE MONITORING OF THE TECHNICAL CONDITION OF THE DOUBLE SHELL SEWERAGE

 

At present, sewerage networks for municipal and industrial wastewater are standardly built using single-skin pipes, even in environmentally or otherwise exposed localities with increased risk. As a rule, on-line inspection of the tightness of the pipe jacket on these sewer networks is not performed and required, and therefore the identification of the fault at the time of its occurrence is not ensured. In these areas with an increased risk, the possible contamination of soil and groundwater is not prevented, as well as the operative elimination of any defects that have not been ensured.

The goal of online monitoring carried out in the AdMaS center in cooperation with Satturn HoleSov and the Department of Telecommunications at the Faculty of Electrical Engineering and Communication is therefore the most detailed coverage of the sewer network for leak localization, while high measurement accuracy is not required. These assumptions predetermine the possibility of using “cheap sensors”, which do not necessarily accurately measure the measured quantities. It is sufficient if they can capture with sufficient accuracy the “changes” caused by the creation of a leak. Sophisticated applications using optical cable using Raman scattering in optical fiber also seem to be suitable.

The ongoing solution of the REVOZIM project – Recycling of water and waste within the green infrastructure of cities shows that even sewage sludge can have an interesting use

 

The joint efforts of young scientists from the AdMaS research center, together with young researchers from the UCEEB center, led to the installation and revitalization of a functional unit for testing green roof compositions during the summer months. Although this summer’s precipitation was above average, the project activities are focused on “combating drought” and measures for appropriate water management in urban areas.
A partial goal of the project is to apply the possibility of using the so-called gray water (little polluted water from bathrooms, kitchens, laundry, etc.), which is after treatment as so-called white water suitable for irrigation, flushing toilets and other technological purposes. The AdMaS center operates fully instrumented models of green roofs irrigated with the above-mentioned gray, resp. white water, which are partly formed by a substrate of recycled building materials and materially transformed sewage sludge by microwave torrefaction into the form of a solid carbonaceous product (so-called “biochar”).
During testing, the quality and quantity of the inlet and outlet gray (white) water and the quality of the fitted green carpet are monitored. Already a visual comparison of two models of green roofs shows that the model where a substrate containing biochar is used generally shows better vegetation quality (color, density, etc.) and clearly significantly more efficient management of the entire composition of the green roof with watering.

COOPERATION WITH ARCHEOLOGISTS

The cooperation of individual AdMaS institutes with various workplaces in our state often very far from the construction industry, is very extensive. Archaeologists turned to the Center for Radiation Defectoscopy,a part of the Institute of Building testing with a very interesting problem. Thanks to fair treasure hunters, armed with suitable detectors, a sword was discovered near Znojmo, the origin of which is approximately estimated for the Iron Age, resp. for the Roman period. The sword was professionally picked up, but the high degree of corrosion does not allow its thorough cleaning, which could damage it or to remove important details. The sword was therefore imported to AdMaS and in the following period will be a subject to an X-ray inspection under the lead of Prof. Leonard Hobst,which should reveal the exact shape of the sword, details of production and possible decoration and the extent of corrosion damage. On the basis of this radiographic survey, archaeologists will subsequently decide on the further procedure and possible remediation of this important archaeological find.

FINAL OPPORTANT MANAGEMENT OF THE ADMAS UP PROJECT

On 10 June 2020, employees of the project department of the Ministry of Education, Sports and Youth visited the AdMaS Center to evaluate the now completed five-year project AdMaS UP – Advanced Building Materials, Structures and Technologies, lasting from 1 January 2015 to 31 December 2019 and whose solver was prof. Ing. Drahomir Novak, DrSc.

The Board of Opponents stated that the individual research groups and divisions of the AdMaS Up project met and significantly exceeded the Threshold Conditions of the NPU I program. Furthermore, I quote: “ The project mobilized human resources in both basic and applied research. During its solution, there was a significant increase in the volume of contract research. The number of publications in journals with an impact factor increased significantly and the trend of publishing in quality journals (Q1, Q2) was also started. During the solution of the project, the submission and implementation of research projects, mobile activities and projects of cooperation with industry was very successfully stimulated. ”

The Board also praised the drawing of funds: “The recognized costs were used efficiently and effectively. The approved budget was adhered to within the limits set by the provider. Transfers within budget chapters were not significant, the only significant difference was the increase in co-financing from non-public funds, to the level of 130% compared to the originally approved project proposal. The change demonstrates the economic health of the beneficiary and is also reflected in a significant excess of most indicators of individual types of results. ”

In conclusion, the Council praised in particular the number of cooperation projects with the application sphere and the number of mobilities, as well as international projects, and overall assessed the project as excellent.

YOUNG SCIENTISTS ARE WORKING HARD AT ADMAS

In addition to other activities, young scientists specializing in water management have a lot of work to do with several scientific research projects funded by the TACR – Zeta program.

Also thanks to the extraordinary technological background offered by the AdMaS center and the support of the above-mentioned program, a number of testing and verification of technologies focused on the use of wastewater potential (energy or technological) are now underway, as well as selected accompanying laboratory analyzes.

In connection with the urgent verification of possibilities and measures that respond to the current dry season, the area of ​​using the potential of so-called gray waters is very promising. This is also due to the fact that the use of gray waters has not yet been regulated in the Czech Republic.

AdMaSe is currently testing a technological unit for obtaining thermal energy from gray wastewater in combination with their treatment for further use – in buildings, for technological purposes, watering green roofs and facades, etc. This technology for recycling gray wastewater, which is solved in the project TJ02000190 (Collection and use of thermal energy from wastewater in combination with the use of treated water), is a highly topical issue, due to the prevailing dry climatic conditions and the need for careful water management.

Another tested technology is a functional sample of a thermal pyrolysis unit, within the project TJ02000262 (Processing of gastro waste into a solid carbonaceous product for material use). After processing the dried gastro waste by thermal pyrolysis technology, the resulting product is the so-called biochar – a solid carbonaceous product, which will first be subjected to characterization with the assumption of its subsequent certification for use as a fertilizer, possibly auxiliaries. This pyrolysis unit is placed in a container, thanks to which it is possible in the future to place it near the source of gastro waste and process it directly at the source.

BUT TESTS ANTIMICROBIAL SURFACES FOR 3D PRINTS

 

The current pandemic has brought together fans of 3D printing worldwide, who immediately responded to the demand for equipment, especially for healthcare professionals. However, the most commonly available 3D printing using FDM technology has its limitations, for example in terms of the possibility of disinfection. The solution could be a unique metal coating in this area, on which is working Assoc. Prof. Jan Podrouzek from the Faculty of Civil Engineering, BUT  in cooperation with the St. Anne’s  Hospital.

Currently, experts from the Faculty of Civil Engineering are testing the application of antimicrobial coatings on the outside of a face mask adapter made by 3D printing in the LAB machine at FME BUT and on door handles in cooperation with an industrial partner.

“Prints with the most available FDM or FFF technology are characterized by articulation and porosity, which is created by layering the material,” points out the specific properties of this type of 3D printing Jan Podrouzek. According to him, the technology is great at a time when it is necessary to respond quickly to specific requirements. It was then, he said, that coating technology could be used to improve the properties of the prints. Considered materials include, for example, oxides of copper, silver or alpaca. These technologies cost tens of millions, but the treatment of one component, for example, costs ten crowns due to the amount.

Some microorganisms can stay out of the host for a relatively long time (up to several days) and this is an important parameter when considering the rate of spread of the disease. From the point of view of spread control, therefore, apart from droplet transfer, the fundamental question of the ability of microorganisms to remain in a viable state on exposed surfaces is crucial. In the case of viruses, it is probably a matter of the interaction of material with proteins on the surface of the virus particle, but in general it is a question of controlling the surface roughness and the associated ability of microbes to survive and the effectiveness of disinfection. This is essential, for example, for the now mass-printed reductions in diving masks, which are mainly worn by paramedics, even for several hours a day. “These coatings can form a protective layer on objects that are exposed to direct, even accidental, contact with the human hand. Applying a thin protective layer cannot only reduce the risk of contamination and subsequent spread of microorganisms such as COVID-19, but also improve a number of useful properties in general, whether it is 3D printer prints or conventional injection molded plastics, “names the common use of coating Podrouzek, among others researcher of the AdMaS Center.

However, due to the possible toxicity of the materials used, it is necessary to carefully examine the possible negative effects on human health. In addition to the research of antimicrobial abilities, which will take place at the St. Anne’s Hospital, the samples will also be examined by experts in the laboratory of the Department of Physical Electronics at the Faculty of Science of Masaryk University under the leadership of Petr Vasina. There, they will focus on the durability of antimicrobial surfaces and will observe the extent to which the metal wears under mechanical and chemical stress, for example by disinfection in a hospital environment.

BUT DEVELOPED A PROTECTIVE HALF-MASK

 

The team of BUT employees and students has developed a protective half mask that can also be printed on a standard 3D printer without the use of special materials. The original half mask is intended for the general public and can be easily printed on standard 3D printers with FDM (thermoplastic modeling) technology.

Problematic possibilities of sealing the entire surface of the print due to its porosity were solved in an original way. Commonly available equipment is enough to produce this half mask. More information at: https://www.vutbr.cz/…/polomaska-but-h1-proti-covid-19-d197…

COMPUTING PERFORMANCE AGAINST COVID – 19

 

On March 28, 2020, the head of the Institute of Automation of Engineering Tasks and Informatics and at the same time an employee of the AdMaS Center, Assoc. Prof. Tomas Apeltauer, at the Czech Television Weekend Studio, where he explained the operation of Folding@home. The team from the Faculty of Civil Engineering at Brno University of Technology connected 282 faculty computers to the activity, thanks to which they are now among the 3% best teams in the world.

Folding@home is a distributed computing project that uses volunteer-connected computers connected to the Internet to simulate protein folding. The results of the simulations are used, for example, to investigate poorly assembled proteins in cancer, Alzheimer’s disease, Parkinson’s disease or brittle bone disease. Based on the results of Folding@home, 223 scientific papers were published as of March 2020. In 2017, an estimated 28,000 volunteers and a total of 100,000 CPU or GPU Folding@home events were involved in the project.

During the COVID-19 pandemic in 2020, the development team announced its intention to address SARS-CoV-2 proteins. On March 13, Nvidia invited computer gamers and generally compatible GPUs and CPUs to join the project, lending more than 400,000 volunteers to their computers in a matter of days. The overall performance of the system has exceeded the combined performance of the world’s 103 most powerful supercomputers and continues to grow.

Detailed info here: https://www.ceskatelevize.cz/…/10441287766-studio-6-vikend/…

SEMINAR TDS – CONCRETE

 

On 28 and 29 January 2020, the TDS – Concrete Seminar was held in the AdMaS Center.

It was attended by 38 employees of the Railway Infrastructure Administration.

The subject of the seminar was lectures and practical demonstrations on Fundamentals of concrete technology, required properties, requirements for raw materials and special concretes, transport and concrete treatment. The lecturer was prof. Ing. Rudolf Hela, PhD.

Ing. Adam Hubacek, Ph.D. acquainted the railway workers with the basic concrete regulations and tested properties, TKP SŽDC and site inspections were the topic of the lecture by doc. Ing. Jiří Brožovský, CSc.

Ing. Martin Ťažký showed guests a practical demonstration of testing fresh and hardened concrete in laboratories.