ENVIRONMENTAL EFFECT OF THE REDUCTION AND USE OF MANURE-BEARING WASTEWATER FROM THE MILKING PARLOUR

The abatement of greenhouse gas emissions from livestock production is an important task of today. One solution is to reduce the generated amount of organic waste and the number of operations required for its transportation and application as they contribute to lower fuel consumption. A mitigation measure of carbon dioxide emissions is to cut down the quantity of manure-bearing wastewater from milking parlors and use it most effectively. The study aimed to assess the environmental effect of this measure. The carbon dioxide emissions were assessed by comparing two technologies. Technology 1 included the use of milking parlor wastewater in a greenhouse and the field application of manure. Technology 2, the basic one, featured the field introduction of milking parlor wastewater mixed with manure. A mathematical optimization model was applied to calculate the carbon dioxide emissions per ton of milk. The optimization problem solving showed that these emissions from the farm with 600-650 milking cows may differ by 4.9% depending on the technology option. The normative data and theoretical research results were used to calculate the carbon dioxide emissions from the fertilizer application units for a farm with 640 milking cows and a specific wastewater output of 7 l/cow/day. The planned milk productivity was 25 kg/cow/day. The MZHT-23 fertilizer application machine aggregated by T-150K tractor was employed. This machine unit transported the liquid organic fertilizers over a distance of 7 km and had a capacity of 22.9 t/h. The study established that the technology with manure management in the greenhouse (Technology 1) will reduce carbon dioxide emissions from the units transporting organic fertilizers to the fields by 11.1%, as compared with the basic technology.

environmental effect, carbon dioxide, emissions, manure, manure-bearing wastewater, greenhouse, dairy farm, milking parlour

1. Podkowka Z., Cermak B., Podkowka W., Broucek J. Greenhouse gas emissions from cattle. Ekologia Bratislava. 2015; 34 (1): 82-88. http://dx.doi.org/10.1515/eko-2015-0009

2. Uddin M.E., Aguirre-Villegas H.A., Larson R.A., Wattiaux M.A. Carbon footprint of milk from Holstein and Jersey cows fed low or high forage diet with alfalfa silage or corn silage as the main forage source. Journal of Cleaner Production. 2021; 298: 126720. https://doi.org/10.1016/j.jclepro.2021.126720

3. Самарин Г.Н., Соловьев М.С., Гордеев Д.Ю. Энергосберегающая рециркуляционная система микроклимата для животноводческих и птицеводческих помещений // Научно-технический прогресс в сельскохозяйственном производстве: Материалы Международной научно-практической конференции. Минск, 2010. С. 159-163. EDN: NUZHCH.

4. Установка для утилизации углекислого газа в животноводческом помещении: Пат.RU2567211 C1, МПК A01K 1/00, A61L 9/00, F24F 3/16 / А.Ю. Лобанов, А.Ф. Триандафилов. № 2014130000/13, заявл. 21.07.2014: опубл. 10.11.2015. EDN: ZFTUDJ.

5. Schiefler I. Greenhouse gas and ammonia emissions from dairy barns. Inaugural-Dissertation.. Dr. agr. Bonn: Rheinischen Friedrich-Wil-helms-Universitat Bonn, 2013. 93 р.

6. Aguirre-Villegas H.A., Larson R.A. Evaluating greenhouse gas emissions from dairy manure management practices using survey data and lifecycle tools. Journal of Cleaner Production. 2017; 143: 169-179. http://dx.doi.org/10.1016/j.jclepro.2016.12.133

7. Chiumenti A. da Borso F., Pezzuolo A., Sartori L., Chiumenti R. Ammonia and greenhouse gas emissions from slatted dairy barn floors cleaned by robotic scrapers. Research in Agricultural Engineering. 2018, 64: 26-33. http://dx.doi.org/10.17221/33/2017-RAE

8. Berzina L., Priekulis J., Aboltins A., Frolova O. Greenhouse gas emissions caused by farm manure management in Latvia. Engineering for Rural Development. 2019: 78-82. http://dx.doi.org/10.22616/ERDev2019.18.N090

9. Gordeev V., Mironov V. Use of ventilation emissions from animal barn for improvement of plant growth. Engineering for Rural Development (Latvia). 2014; 13: 99-102.

10. Миронова Т.Ю., Гордеев В.В., Валге А.М. Способ минимизации выхода навозосодержащих стоков из доильного зала // Известия Санкт-Петербургского государственного аграрного университета. 2019. № 56. С. 178-184. http://dx.doi.org/10.24411/2078-1318-2019-13178

11. Gordeev V.V., Mironova T.Yu., Khazanov V.E., Mironov V.N., Models to minimize output of manure-bearing wastewater from milking parlours at conceptual designing stage of dairy farms. Engineering for rural development. 2019: 413-419. http://dx.doi.org/10.22616/ERDev2019.18.N254

12. Гордеев В.В., Хазанов В.Е., Миронов В.Н., Миронова Т.Ю. Молочная ферма КРС с минимальной антропогенной нагрузкой на окружающую среду // Сборник трудов Международного агроэкологического форума. Т. 3. СПб.: ГНУ СЗНИИМЭСХ Россельхозакадемии, 2013. С. 14-21. EDN: RPUJAN.

13. Гордеева Т.И., Гордеев В.В. Технология утилизации навозосо-держащих стоков доильных залов в тепличных сооружениях // Технологии и технические средства механизированного производства продукции растениеводства и животноводства. 2006. № 78. С. 137-145. EDN: SZTJDF.

14. Васильев Э.В. Повышение эффективности процесса использования жидкого органического удобрения путем автоматизированного выбора рациональных вариантов технологий транспортировки и внесения в условиях северо-западного региона: Дис.. канд. техн. наук. СПб.: СПбГАУ, 2015. 176 с. EDN: VAIMRL.

15. Гордеев В.В., Миронова Т.Ю. Сравнительная оценка технологий утилизации навозосодержащих стоков доильного зала // Агроинженерия. 2020. № 6 (100). С. 59-65. http://dx.doi.org/10.26897/2687-1149-2020-6-59-65