Bioplinara organica Kalnik 1 d.o.o.

For the production of electricity, corn silage in the amount of 35,000 t is purchased annually, from over 100 subcontractors from the surrounding area
The biogas plant produces 60,000 tonnes of digestate annually, which is a premium organic fertilizer and is given free of charge to all farmers to improve soil quality, increase crop yields and reduce fertilizer requirements
It is the first biogas plant in the group to install a biodegradable waste treatment line and thus contribute to solving the problem of biodegradable waste management
In 2018, over 18,000 tonnes of biodegradable waste was disposed of
In 2019, a contract for the management of biodegradable waste in the City of Zagreb was signed

Bioplinara organica Kalnik 1: 2.4 MW

Selected technology: NAHTEC GmbH
Selected contractors: NAHTEC GmbH and Hidroregulacija d.d.
Investment value: HRK 59,789,669.00
Commissioning: in operation
September 2016, a 2.4 MW power plant was commissioned in the municipality of Sveti Petar Orehovec (village of Gregurovec) in Koprivnica-Križevci County. In a rural area like the village of Gregurovec, the construction of a biogas power plant is an appropriate system for the closure of the production and processing agricultural process, as it enables heat and electricity to be obtained, as well as for the provision of excellent fertilizer represented by the processed kosopstrat. The construction of a biogas power plant started in 2015. The first refueling of the biogas plant began in May 2016, and the plant started operating at full capacity in July 2016.

The biogas plant is designed as a continuous charge and operates in the medium or mesophilic temperature range, in the anaerobic environment, that is, the environment without the presence of oxygen. The energy value of the biogas thus obtained is from 5.2 to 6.5 kWh / m3 of biogas. From this, 83.8% of usable energy is produced in the co-production or cogeneration process, while the rest is conversion losses. This energy produces approximately 42.1% of electricity and 41.7% of heat.

The generated electricity is transmitted to the grid, while the heat produced is used for the processing of feedstock for biogas production.

Figure 2: Proposed scheme of a two-stage biogas plant

Input material (biomass)

Raw materials for biogas production are divided into two main groups:

substrates:
Fertilizers: bovine and pig manure and manure, poultry manure;
Vegetable biomass: maize, sorghum, cereal and grass silage, fresh grass cuttings, forage residues, products;
Coppice or waste of the food processing industry:
Animal by-products including food residues, fat, waste fruits and vegetables, compost, protein and carbohydrate-rich industrial waste water, fat breakdown waste.

In order to produce electricity from biogas, it is necessary to ensure stable and sufficient quantities of waste of biological origin, which is the raw material in production. The second component of bio-waste consists of slurry (liquid cow dung), which will be delivered by livestock farmers and farmers from the region with which purchase agreements have already been signed for a period of 15-20 years. Slurry is a problem for livestock farmers due to the legally prescribed method of disposal (in accordance with the European Union nitrate directive) and will be transported and provided free of charge to the biogas plant. The process of biogas generation – anaerobic digestion, requires, in addition to the abovementioned primary feedstock, the use of substrates. Different types of biomass can serve as a substrate for biogas production. Due to its favorable characteristics and proximity to suppliers, corn silage is used as a substrate for biogas production within the biogas plant.

For the purchase of electricity, a 14-year contract is signed with the Croatian Energy Market Operator (HROTE) at a preferential feed-in tariff, which is adjusted annually for inflation and rising energy prices.

Reference: KK.03.2.1.03.0221

Project value: 1.306.541,20

Grant: $ 758,295.00

The overall objective of this project is to develop and increase the competitiveness of SMEs operating in the areas with developmental features of the Republic of Croatia by investing in tangible and intangible assets related to the introduction of new ICT solutions in the enterprise business, which will optimize 3 business processes, integrate business functions and open 5 new workplaces.

The target groups of the project are the current employees, subcontractors and associates of the company, as well as all citizens of the Republic of Croatia. The project will accelerate and facilitate the day-to-day operations of the employees, raise the quality of communication and open up opportunities for the development of new projects.

It is important to emphasize that the project has a positive impact on the environment, since the implementation of equipment and solutions results in a reduction in the use of paper in daily operations, consumption of electricity and higher production of electricity and heat from biogas plants, ie renewable energy sources.

With the implementation of the project for a period of 12 months, we will encourage investments in the total amount of HRK 1,306,541.20 and improve the efficiency of the business through improvement of 3 business processes: strategic planning, risk management and asset management.