the total load of organic pollutants
degradation
This article presents the durations of the phases of the degradation of pretreated and untreated waste stabilized in anaerobic laboratory reactors and the total load of organic pollutants and forms of nitrogen emitted from the waste during the study.
Materials and methods
Research material
The research was conducted on municipal solid waste (MSW, unprocessed biologically) and biologically stabilized (ST) waste, collected from an apartment block housing with central heating, in Zielona Góra, Poland. Biological processing was conducted in the Municipal Waste Composting Plant in Zielona Góra. The biological line installation consists of four open oxygen chambers made of reinforced concrete. Every 7–10 days, the waste is moved to another chamber. The overall waste stabilization time is approximately 5 weeks. The waste is aerated by removing gasses from the bottom of the chambers via suction.
A sample of MSW was prepared from samples weighing about 25 kg selected randomly from 10 vehicles delivering waste to the composting bunkers. Samples of pretreated waste were collected from 10 randomly selected batches of composted waste. Laboratory samples of weights of over 10 kg were obtained by reducing the general sample by averaging and using the method of quartering.
The waste was subjected to chemical analysis and composition investigation.
The composition of the waste was determined in the fraction >10 mm. The waste was separated into the following components: kitchen and garden waste, paper and cardboard, glass, plastics, textiles, composite packaging, wood, metals, and mineral wastes. The composition of waste was presented as the share of the respective fractions in the total mass of waste, in % (m/m). The scope of chemical analysis included the following indications: moisture content, volatile substances (ignition loss at 500 °C), and organic carbon.
All indications were made according to Standard Methods [American Public Health Association (APHA), 1995] and Polish Standards.
Research area
The study of the emission of pollutants from untreated and biologically treated waste was performed using a laboratory scale in two reactors made of PVC pipes with a diameter of 0.15 m and height 1.30 m. In the bottom of each reactor, an outlet was installed (pipe with a valve) for the draining of effluents. In the top of the reactors, an outlet was installed for the removal of the biogas (Fig. 1), together with an inlet for the dosage of water to simulate rainfall. The leachate was stored in a tank with a capacity of 20 dm3.
the total load of organic pollutants
degradation
This article presents the durations of the phases of the degradation of pretreated and untreated waste stabilized in anaerobic laboratory reactors and the total load of organic pollutants and forms of nitrogen emitted from the waste during the study.
Materials and methods
Research material
The research was conducted on municipal solid waste (MSW, unprocessed biologically) and biologically stabilized (ST) waste, collected from an apartment block housing with central heating, in Zielona Góra, Poland. Biological processing was conducted in the Municipal Waste Composting Plant in Zielona Góra. The biological line installation consists of four open oxygen chambers made of reinforced concrete. Every 7–10 days, the waste is moved to another chamber. The overall waste stabilization time is approximately 5 weeks. The waste is aerated by removing gasses from the bottom of the chambers via suction.
A sample of MSW was prepared from samples weighing about 25 kg selected randomly from 10 vehicles delivering waste to the composting bunkers. Samples of pretreated waste were collected from 10 randomly selected batches of composted waste. Laboratory samples of weights of over 10 kg were obtained by reducing the general sample by averaging and using the method of quartering.
The waste was subjected to chemical analysis and composition investigation.
The composition of the waste was determined in the fraction >10 mm. The waste was separated into the following components: kitchen and garden waste, paper and cardboard, glass, plastics, textiles, composite packaging, wood, metals, and mineral wastes. The composition of waste was presented as the share of the respective fractions in the total mass of waste, in % (m/m). The scope of chemical analysis included the following indications: moisture content, volatile substances (ignition loss at 500 °C), and organic carbon.
All indications were made according to Standard Methods [American Public Health Association (APHA), 1995] and Polish Standards.
Research area
The study of the emission of pollutants from untreated and biologically treated waste was performed using a laboratory scale in two reactors made of PVC pipes with a diameter of 0.15 m and height 1.30 m. In the bottom of each reactor, an outlet was installed (pipe with a valve) for the draining of effluents. In the top of the reactors, an outlet was installed for the removal of the biogas (Fig. 1), together with an inlet for the dosage of water to simulate rainfall. The leachate was stored in a tank with a capacity of 20 dm3.
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