Influence of Bio-Preparation on Wastewater Purification Process in Constructed Wetlands

Ignatowicz

2017

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Abstract. The paper aimed at evaluating the seasonal changes in quality of wastewater from facilities producing fruit and vegetable juices, processed and frozen products, and vegetable concentrates. The study revealed that wastewater from fruit and vegetable industry contain large amounts of organic substances expressed as BOD5 (minimum -500 mgO2/dm 3 , maximum -6 100 mgO2/dm 3 ) and COD (minimum -806 mg O2/dm 3 , maximum -7 732 mg O2/dm 3 ), while is deficient in nitrogen and phosphorus. Considerable seasonal oscillations in sewage load disposed by industry to sewerage, were observed. An increase of 50%-60% wastewater concentrations was found between June and October in 2013-2016 as compared to the remaining months.

Section: Characteristics Of Raw Wastewater From Fruit and Vegetable Isupporting

confidence: 53%

Seasonal changes in quality of wastewater from fruit and vegetable industry

Ignatowicz

2017

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“…According to the literature, BOD 5 value ranges from 500 to 5 000 mgO 2 /dm 3 , and during the intensive production, it even exceeds 5 000 mgO 2 /dm 3 [2,[9][10][11]. These levels are much higher than in household sewage [2,12,13]. Composition of wastewater produced in dairy processing plants depends primarily on the production profile.…”

Section: Characteristics Of Raw Sewage From the Fruit And Vegetable Amentioning

confidence: 99%

Comparison of the composition of wastewater from fruit and vegetables as well as dairy industry

Struk-Sokołowska

2017

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Abstract. The aim of the study was to compare the composition of wastewater from the facility producing fruit and vegetable juices and dairy processing plant in Podlasie province. Their composition is also influenced by processes of washing and disinfecting of production lines. The washing process moves solid, colloidal, and dissolved impurities to the wastewater, depending on the type of raw material processed and the technological process used. At the same time, cleaning and disinfecting components at the amounts difficult to determine, penetrate the wastewater. The seasonal oscillations in the quantity and quality of sewage composition originating from fruit-vegetable and dairy processing became a problem for many conventional wastewater treatment plants, to where they are discharged. Based on the survey, it was found that wastewater from the fruit and vegetable industry as well as dairy industry contained large amounts of organic matter expressed in BOD 5 (fruits and vegetables processing from 860 to 3 200mg O 2 /dm 3 , dairy from 1 410 to 3 850 mgO 2 /dm 3 ) and COD (fruits and vegetables processing from 919 to 3 700 mgO 2 /dm 3 , dairy from 1 680 to 5 420 mgO 2 /dm 3 ). Significant differences were found in concentrations of nitrogen and phosphorus in compared raw wastewater.

“…A bio-preparation is composed of a starter conditioner and suitably selected composition of non-pathogenic microorganisms with strictly targeted effect, causing decomposition and degradation of harmful substances, like ammonia, nitrite, hydrogen sulfide, indole, skatole, mercaptans, phosphorus compounds and other mono-and multi-carbon organic compounds. The microbiological composite has the ability to bind heavy metals, direct the desired fermentation processes, change the pH of sewage and liquid manure, and strongly inhibit the development of pathogenic microorganisms, as well as enzymatic destruction of eggs and spores of insects and endoparasites [18]. Bio-preparations are manufactured in the form of tablets, powder, granules, emulsions and liquid.…”

Section: Application Of Constructed Wetland and Bio-preparationmentioning

confidence: 99%

Constructed wetlands aided with bio-preparation to neutralize wastewater from a small fruit and vegetable processing plant with high load pollutants

2019

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The research was carried out for real wastewater collected directly from a fruit and vegetable plant located in north-eastern Poland. Effectiveness of organic matter metabolism expressed as BOD5, COD, total suspended solids depending on the load of pollutants and bio-preparation, was determined. The use of bio-preparation in the constructed wetland allowed to increase the efficiency of wastewater treatment throughout the research period: for BOD5 by 94% in deposit with bio-preparation and by 87% in deposit without the addition of bio-preparation; however, for COD – by 93% in deposit with the addition of bio-preparation and by 87% in deposit without bio-preparation added.