APPLICATION OF FLY ASH GENERATED FROM A MSW TREATED THERMAL POWER PLANT IN VIETNAM
Tran, Giang (2018)
Tran, Giang
Kaakkois-Suomen ammattikorkeakoulu
2018
All rights reserved
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2018081014467
https://urn.fi/URN:NBN:fi:amk-2018081014467
Tiivistelmä
Fly ash is considered a solid waste material that require special disposal treatment to avoid environmental pollution, especially soil pollution. A municipal solid waste (MSW) thermal power plant in Phu Tho Province, Vietnam produced about 15 tonnes of fly ash per day. Au Viet Resource and Environment Joint Stock Company in Vietnam was founded to utilize the subject fly ash and use it as a soil fertilizer. The purpose of this thesis was to analyse the subject fly ash applicability as a soil ameliorant by investigating fly ash behaviour in Phu Tho soil and studying improvement of Spinacia oleracea (spinach) with the amended fly ash.
There were two individual study project in this thesis to study the application of fly ash in soil. The first project was performed and analysed in Phu Tho Province, Vietnam. Soil sample were collected from 4 different location in Phu Tho Province and mixed with MSW fly ash as different ratio of 5 kg/m2, 10 kg/m2 and 15 kg/m2. Soil analysis targets: pH, cation exchange capacity, organic matter content, water content, percentage of nitrogen, phosphorus, potassium, silicon, iron, concentration of soluble reactive phosphorous, exchangeable potassium, sodium ion, magnesium ion, aluminium ion, manganese, arsenic, boron, cadmium, lead, copper, zinc, were measured. Each measurement for analysing targets was performed once (single analysis). The second project was the plantation of spinach on amended-fly ash soil. 12 meter square of in-ground spinach bed was cultivated with 4 different fertilizer formulars: non-amened fly ash, fly ash amendment at ratio 0.5 kg/m2, 0.75 kg/m2 and 1.0 kg/m2 with biological fertilizer as suggested supplement.
Phu Tho soil sample results show significant increase in soil pH, nutritious cations, silicon and heavy metals concentration. Due to single analysis of soil sample and sample assembling condition, the result of soil sample analysis shows quite a confusion and problematic in discussion. However, improvement of soil fertility and acidity buffering were observed from the applied fly ash soil sample analysis. The study also indicated enhancement of nutrition exchange capacity due to the increase of cation in the soil. The study experiment of planting spinach in fly ash amended soil also shows improvements. As compared to non-amended fly ash spinach, average plant yield experienced improvement of 11.51%, 15.50% and 33.95% according to the increase of fly ash proportion.
There were two individual study project in this thesis to study the application of fly ash in soil. The first project was performed and analysed in Phu Tho Province, Vietnam. Soil sample were collected from 4 different location in Phu Tho Province and mixed with MSW fly ash as different ratio of 5 kg/m2, 10 kg/m2 and 15 kg/m2. Soil analysis targets: pH, cation exchange capacity, organic matter content, water content, percentage of nitrogen, phosphorus, potassium, silicon, iron, concentration of soluble reactive phosphorous, exchangeable potassium, sodium ion, magnesium ion, aluminium ion, manganese, arsenic, boron, cadmium, lead, copper, zinc, were measured. Each measurement for analysing targets was performed once (single analysis). The second project was the plantation of spinach on amended-fly ash soil. 12 meter square of in-ground spinach bed was cultivated with 4 different fertilizer formulars: non-amened fly ash, fly ash amendment at ratio 0.5 kg/m2, 0.75 kg/m2 and 1.0 kg/m2 with biological fertilizer as suggested supplement.
Phu Tho soil sample results show significant increase in soil pH, nutritious cations, silicon and heavy metals concentration. Due to single analysis of soil sample and sample assembling condition, the result of soil sample analysis shows quite a confusion and problematic in discussion. However, improvement of soil fertility and acidity buffering were observed from the applied fly ash soil sample analysis. The study also indicated enhancement of nutrition exchange capacity due to the increase of cation in the soil. The study experiment of planting spinach in fly ash amended soil also shows improvements. As compared to non-amended fly ash spinach, average plant yield experienced improvement of 11.51%, 15.50% and 33.95% according to the increase of fly ash proportion.