scholarly journals Efficiency of application of biofertilizers on the basis of sewage sludge of treatment facilities of Odessa

2020 ◽  
Vol 107 (3) ◽  
pp. 71-78
Author(s):  
V. Krutyakova ◽  
◽  
N. Pyliak ◽  
V. Dyshliuk ◽  
O. Nikipelova ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Soil Fertility ◽  
Biological Treatment ◽  
Field Research ◽  
Black Soil ◽  
Corn Yield ◽  
Trophic Groups ◽  
Quantitative Characteristics ◽  
Seed Husk ◽  
Treatment Facilities

Efficiency of application of biofertilizers on the basis of sewage sludge of treatment facilities of Odessa The article presents the results of the application of new biofertilizers in the technology of growing corn for grain. Biofertilizers – on the basis of sewage sludge of biological treatment plants «Southern» and «Northern» of Odesa with the addition of winter wheat straw and sunflower seed husk. The effectiveness of the application of biofertilizers based on sewage sludges was studied in a field experiment on black soil ordinary medium humus. According to the results of field research it is established that the use of new biofertilizers based on sewage sludge of biological treatment plants «Southern» and «Northern» of Odesa in corn cultivation technologies increases the quantitative characteristics of microorganisms of different ecological and trophic groups, which, in turn, helps to increase soil fertility and corn yield for grain. Keywords: biological treatment plants, bioorganic fertilizers, efficiency, ecological and trophic groups of microorganisms, rhizosphere, soil fertility.

scholarly journals The influence of bioderified on the basis of urban wastewater sediments on agricultural productivity on the example of corn on grain

2020 ◽  
Author(s):  
V. Kruteakova ◽  
◽  
Nina V. Pilyak ◽  
V. Dishliuk ◽  
O. Nikipelova ◽  
...  
Keyword(s):  
Biological Activity ◽  
Economic Performance ◽  
Biological Treatment ◽  
Sunflower Seed ◽  
Organic Waste ◽  
Raw Materials ◽  
Corn Yield ◽  
Urban Wastewater ◽  
Seed Husk ◽  
Modern Biotechnology

Sewage sludge (SS) is a secondary resource that can be used in modern biotechnology to produce fertilizers. This is the bioconversion of organic waste – obtaining available organic raw materials (compost) with the participation of phosphate-mobilizing microorganisms with the addition of fillers. Biofertilizers based on SS of biological treatment plants (SBU) "Southern" and "Northern" of Odessa with different fillers (winter wheat straw and sunflower seed husk) were studied. The effectiveness of biofertilizers was studied in a field experiment on chernozem ordinary medium humus. Culture in the experiment: corn for grain (medium-ripe hybrid FAO 400). According to the results of determining the biological activity of the soil, the highest indicators of corn yield are shown when using new biofertilizers in comparison with the control, which provided an increase in corn yield per grain and improved economic performance.

scholarly journals One Year Residual Effect of Sewage Sludge Biochar as a Soil Amendment for Maize in a Brazilian Oxisol

2021 ◽  
Vol 13 (4) ◽  
pp. 2226
Author(s):  
Joisman Fachini ◽  
Thais Rodrigues Coser ◽  
Alyson Silva de Araujo ◽  
Ailton Teixeira do Vale ◽  
Keiji Jindo ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Grain Yield ◽  
Nutrient Availability ◽  
Pyrolysis Temperature ◽  
Residual Effect ◽  
Soil Nutrient ◽  
Mineral Fertilizer ◽  
Corn Yield ◽  
Soil Nutrient Availability ◽  
One Year

The thermochemical transformation of sewage sludge (SS) to biochar (SSB) allows exploring the advantages of SS and reduces possible environmental risks associated with its use. Recent studies have shown that SSB is nutrient-rich and may replace mineral fertilizers. However, there are still some questions to be answered about the residual effect of SSB on soil nutrient availability. In addition, most of the previous studies were conducted in pots or soil incubations. Therefore, the residual effect of SSB on soil properties in field conditions remains unclear. This study shows the results of nutrient availability and uptake as well as maize yield the third cropping of a three-year consecutive corn cropping system. The following treatments were compared: (1) control: without mineral fertilizer and biochar; (2) NPK: with mineral fertilizer; (3) SSB300: with biochar produced at 300 °C; (4) SSB300+NPK; (5) SSB500: with biochar produced at 500 °C; and (6) SSB500+NPK. The results show that SSB has one-year residual effects on soil nutrient availability and nutrient uptake by maize, especially phosphorus. Available soil P contents in plots that received SSB were around five times higher than the control and the NPK treatments. Pyrolysis temperature influenced the SSB residual effect on corn yield. One year after suspending the SSB application, SSB300 increased corn yield at the same level as the application of NPK. SSB300 stood out and promoted higher grain yield in the residual period (8524 kg ha−1) than SSB500 (6886 kg ha−1). Regardless of pyrolysis temperature, biochar boosted the mineral fertilizer effect resulting in higher grain yield than the exclusive application of NPK. Additional long-term studies should be focused on SSB as a slow-release phosphate fertilizer.

scholarly journals Sewage sludge application enhances soil properties and rice growth in a salt-affected mudflat soil

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuhua Shan ◽  
Min Lv ◽  
Wengang Zuo ◽  
Zehui Tang ◽  
Cheng Ding ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Organic Carbon ◽  
Plant Growth ◽  
Root Growth ◽  
Soil Fertility ◽  
Soil Properties ◽  
Soluble Sugar ◽  
Soil Reclamation ◽  
Rice Growth ◽  
Promote Plant Growth

AbstractThe most important measures for salt-affected mudflat soil reclamation are to reduce salinity and to increase soil organic carbon (OC) content and thus soil fertility. Salinity reduction is often accomplished through costly freshwater irrigation by special engineering measures. Whether fertility enhancement only through one-off application of a great amount of OC can improve soil properties and promote plant growth in salt-affected mudflat soil remains unclear. Therefore, the objective of our indoor pot experiment was to study the effects of OC amendment at 0, 0.5%, 1.0%, 1.5%, and 2.5%, calculated from carbon content, by one-off application of sewage sludge on soil properties, rice yield, and root growth in salt-affected mudflat soil under waterlogged conditions. The results showed that the application of sewage sludge promoted soil fertility by reducing soil pH and increasing content of OC, nitrogen and phosphorus in salt-affected mudflat soil, while soil electric conductivity (EC) increased with increasing sewage sludge (SS) application rates under waterlogged conditions. In this study, the rice growth was not inhibited by the highest EC of 4.43 dS m−1 even at high doses of SS application. The SS application increased yield of rice, promoted root growth, enhanced root activity and root flux activity, and increased the soluble sugar and amino acid content in the bleeding sap of rice plants at the tillering, jointing, and maturity stages. In conclusion, fertility enhancement through organic carbon amendment can “offset” the adverse effects of increased salinity and promote plant growth in salt-affected mudflat soil under waterlogged conditions.

scholarly journals Determination parameters of geothermal heat-exchangers for biological treatment facilities

2018 ◽  
pp. 61-69
Author(s):  
O. P. Chepak ◽  
◽  
V.K. Kostenko ◽  
O.L. Zavyalova ◽  
M.I. Tavrel ◽  
...  
Keyword(s):  
Heat Exchangers ◽  
Biological Treatment ◽  
Geothermal Heat ◽  
Treatment Facilities

scholarly journals Agro-Environmental Rationale of Sewage Sludge Processing and Application

2020 ◽  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Crop Yields ◽  
Conservation Agriculture ◽  
Fulvic Acids ◽  
Black Soil ◽  
Point Of View ◽  
Total Carbon ◽  
Mineral Fertilizers ◽  
Organic Mineral

Conservation agriculture is becoming a priority for Ukraine as well as for many countries of the world. It is a known fact that high content of heavy metals in the soil impairs fertility and carries the risk of crops translocation. An agroecological effect of obtaining and applying organic-mineral fertilizers has been insufficiently studied so far. The purpose of the work is to determine possibilities to produce new organic-mineral fertilizers based on sewage sludge with enhanced adsorbing properties, to establish their agroecological efficiency. Methods. Field, laboratory-analytical, statistical-mathematical. Results. From the agroecological point of view, the production process of organic-mineral fertilizers based on the sewage sludge of Kharkiv is justified. It allows us to expand functional capabilities of reagents, enhancing adsorbing properties of heavy metals. It is proved the advantage of organic-mineral fertilizers over the traditional ones on chernozem typical. After fertilization, the content of total carbon in the soil increased, the content of humic acids increased by 1,5 – 2,8 times, fulvic acids – by 1,1 – 1,7 times, the total sum of humic substances – by 1,3 – 2,1 times compared with no fertilizer option. It is established that application of organic-mineral fertilizers promotes blocking of heavy metals in soil and prevents translocation to plant. Maximum yields of corn were obtained after the local application of granular organic-mineral fertilizers – the yield increase was 41% compared to the control, after introduction of bulk fertilizers – 32% compared to the control. Profit was $ 23 -36 per hectare. Conclusions. The process of organic-mineral fertilizers production on the basis of sewage sludge in Kharkiv is substantiated from the agro-ecological point of view. Agroecological and agrochemical efficacy of sewage sludge use as compared to organic and mineral fertilizers applied in equivalent doses separately was established on the typical heavy loam chernozem. After introduction of organic-mineral fertilizers based on sewage sludge a significant increase in the concentration of trace elements and heavy metals was found in the black soil but these indicators did not exceed the established maximum permissible concentrations. The implementation of the proposed technology will reduce bioavailability of heavy metals and their mobility in the soil which, in turn, impedes their accumulation in products. It is expected to increase soil fertility, crop yields and obtain environmentally friendly and safe products due to the stable composition of innovative fertilizers.

scholarly journals ANALYSIS OF PHYSICOCHEMICAL WASTEWATER TREATMENT IN ARCTIC ZONES

2020 ◽  
Vol 22 (1) ◽  
pp. 152-163
Author(s):  
E. I. Vialkova ◽  
E. S. Glushchenko ◽  
T. S. Velizhanina ◽  
E. Y. Osipova
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Wastewater Discharge ◽  
Total Change ◽  
Climatic Zones ◽  
Physicochemical Treatment ◽  
Treatment Facilities ◽  
The Russian Federation ◽  
Sewage Systems ◽  
Design Construction

The large part of the Russian Federation locates in arctic and subarctic climatic zones, which determine the specificity of design, construction and operation of sewage systems of these regions. Nowadays, the most part of small Arctic towns has no wastewater treatment facilities, while the available biological treatment facilities do not work properly. An alternative way is physicochemical treatment, which is more resistant to severe climate and volley wastewater discharge than biological treatment. The paper presents the research results of total change the biological into physicochemical treatment. The main stages of such a treatment include coagulation, filtration, oxidation and two-stage filtration (mechanical and absorption). The experiments show a 90.8% decrease in the concentration of chemical oxygen and a 74% and 82.5% decrease in nitrates and ammonium.

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