Increase the energy efficiency of waste disposal

Garbage is a burden and the citizen is of course to blame. The headline in the newspapers and magazines is something like this. The motto is to consume less with packaging. Of course, the citizen must always fix everything here. But one cannot believe it, in fact shops and retail chains are already working on clever shopping opportunities in order to produce as little waste as possible. Packaging becomes thinner and lighter, the cavities with which you have always cheated large packs have shrunk. Fresh goods without plastic bags. Milk for tapping when you bring your own bottles. This is of course nice and shows what is possible. But ultimately, these first advances always took place where garbage is still removed from the streets with machines. The less to not at all industrialized countries spread a lot of waste. The positive effect would be clearly visible there, based on statistics. The many industrialists have managed to offer plastic products in every country in the world. But you don't have a penny to build a complete waste disposal infrastructure in poor countries. Does anyone understand that. Now that there is no law, there is freedom of the fool. If you look, for example, at the bubbling profits of Coca Cola Company, which were $ 9 billion in 2019, an investment in a waste incineration plant with subsequent electricity production of $ 200 million would not be much. The region would have a reason to speak well about Coca Cola. Expanded further, it strengthens relations with these countries. You all know the landfills that wander through different regions of the world like a Sahara desert. If the one is full, a new one is simply dug out. Can actually be compared with assembly line speed in which short time one landfill after another is created. This has been going on for as long as the increase in garbage is registered. The poor countries even buy the garbage only to fill a new landfill. Does anyone understand that? Difficult and, if you are honest, not at all.


Of course that's a big story. So you can see in every chain that is produced, there is also potential to save energy and waste. Even to be avoided entirely.


Which way of saving can be paid attention to is that of logistics. So the way the garbage collection every 14 days and 28 days

makes (2-4 weeks).


Why is there such a rhythm? It has established itself and the industry, which is constantly developing waste management, has not taken appropriate options into account in all areas. Of course, the rhythm also depends on how big the individual trash cans are. The size is then regulated by standards.


Would you now extend the emptying dates to 21 days and 35 days

you can save energy and costs. On the cost side, especially for the citizen. If a garbage truck drives out 10-20 times less per year, then of course the costs add up for each district and district. I have no data on this. Of course, you can make a direct request via the suppliers of the individual cities.

It is not just about whether and how much you could save and should only show if the industry were serious every time someone walked the streets with the pollution flag then something would still go. Whereby, of course, costs / usage must be correct.


What should industry take into account so that primary energy, i.e. oil and diesel, can be saved?


For whom the idea has, it always seems to be an easy one. Quite simply, every household should have included its own hand press for the next generation of garbage cans.

The hand press can be integrated into the trash can and operated with both arms in such a way that the volume of waste is significantly reduced. 40-50% reduction in volume in numbers. From the point of view of the idea, that was all.


In practice, this turns out to be much more difficult. The difficult topic always reflects a challenge for engineers. Of course, if the managing director does not want to spend money and no tax benefits are provided by the state, then many managing directors always have a hard time. But it also shows that you are not wanted to use this screw in the energy industry. You always have to recognize the lever effect, then even the smallest changes become gigantic.


Making a prototype in urban quality shouldn't be a problem. But how easy is it to operate the integrated manual waste compactor? What about emptying through the machine on the garbage truck? Can something jam or get tangled there? Will the emptying process per garbage can on the garbage truck increase by a total of 5-10 seconds? Manually pushing rubbish together can make emptying more difficult!

You have to do one of many test runs. That requires capacities in the form of employees, time and space. Before that, you can build a 3D animation on the computer. Modern CAD programs can be used for this. There it can be shown whether it works and how it would work. With a 3D printer, a garbage can with a manual hand press in 1/10 scale can be inexpensively printed out in miniature on a miniature level, in cm approx. 10x10cm. The software can also calculate leverage and tensile forces. The material thickness of the exterior and interior walls can also be adjusted in this way. Can older people perform this movement on the hand press? Would doctors even say that it is good for the muscles? A little training at the garbage press for everyone. How long does a trash can last in simulated continuous operation? and what does the additional effort cost by integrating a garbage press?


This idea should also clarify how many steps and processes are started after an idea has arisen.

Then of course there is the question of how much energy is saved. What changes at all? Now in the pilot project you can choose a small city and test the new trash cans over a period of 3-6 months. After an evaluation and feedback from the citizens, you can then fine-tune them before a large series of garbage cans with a manual garbage press goes into series production.


For private households and homeowners, of course, manual waste compactors can already be bought today. That costs between 20-100 €. Can be easily found with the search engine> Manual garbage press / hand press.


What does that mean for waste disposal companies? Now 10-20 trips less per year. The employees have no less to do, but these 10-20 working days a year have to be restructured for waste management companies. Redistribution of labor. In total, that means 70-140h less working hours per year per employee per city.


The large garbage trucks are used up to 20 times less per year. Apart from the fact that the garbage trucks of course do not use any energy on these 20 days, there are a few other amenities. For example, maintenance and repair costs are reduced. In a year this is possibly small stuff and others would put it as ridiculous. But if you count the savings on 5 or 10 years, we are in large 4-digit areas per city and per garbage truck. So that's no longer irrelevant. But it also has to be seen in relation to the wrong planning and waste of tax expenditure per year . The average is 40 billion euros. There are 4 digit amounts not even worth a toothpick. In this way, waste management can make waste cheaper or increase profits for years to come.


If a company is doing well, you can of course also offer the public sector employees 2 additional paid vacation days. With a proper revision of the work plans through the 70-140h working hours gained per year, one could possibly also think about a lower number of hours per week. With a low salary, of course, you don't make friends with it. The development of the individual branches of industry clearly shows where in the past few years 40h hours a week has become 38h and 38h has been on the clock for some of them for 35½ hours. So the trend is clearly less work per week. Of course, business dependent.


Many are always happy with financial aspects. That has always been the case, especially when you are on the employer side. Are there any other advantages that a change in the emptying dates would entail. Of course, there would be fewer traffic jams on the streets 10-20 days a year. Garbage trucks regularly cause small traffic jams . Traffic would be smoother. A smooth traffic costs less money. In a simulation you can show which energy is lost in the air every day nationwide. All travelers arrive at their destination more or less on time. But the risk and the associated accident risk also decrease for the 10-20 days for the working team in the garbage truck. There are definitely statistics here. But these are not available to me. Here, of course, there are always only numbers at the municipal / urban level, so a small town has 2 or 5 garbage trucks, a slightly larger one already 10, etc. Horrible sums quickly arise that can be 8 or 9 digits if one assumes a nationwide adjustment and to 10 Years.

Although energy saving was the focus of this idea, you can no longer get riders off the horse today. Only cash and if companies can save a lot, these are strong arguments. Someone who has studied the energy economy of waste disposal plants and is familiar with the actual numbers could give good estimates of how much Co2 / kg or Co2 tons are saved per year.


At the beginning there is only a small change in how you can adapt a garbage can, but in the end it is a great advantage for the economy. Strictly speaking, for more than one economy.


Kind regards


Rinaldo Imperiale