Berikut ini adalah pertanyaan dari nursyazaira99 pada mata pelajaran Kimia untuk jenjang Sekolah Menengah Atas
water treatment.
(4 marks)
b) Explain briefly on the primary treatment of surface water for the removal of
contaminants.
(4 marks)
c) Trichloroethane, CH3CHCl3 is widely used as a cleaning solvent. It is mobile in soils and
readily migrates to groundwater. The concentration of CH3CHCl3 is found to be 35 ppb
in groundwater sample. Express the concentration of CH3CHCl3 in mg/L, ppm, ppt and
ng/m³.
(8 marks)
QUESTION 5
a) Identify three types of waste can be incinerated.
(3 marks)
b) In March 2019, toxic chemical waste was illegally dumped into Sungai Kim Kim in Pasir
Gudang. Examine how in-situ bioremediation can be used to treat contaminated soil at
surrounding Sungai Kim Kim.
(4 marks)
c) Solid waste can create significant health problems and a very unpleasant living
environment if not disposed of safely and appropriately.
i) Describe the effect of solid waste pollution to the environment due to improper
handling and transportation.
(2 marks)
ii) Explain the best solution to solve the solid waste problem.
(3 marks)
Jawaban dan Penjelasan
Berikut ini adalah pilihan jawaban terbaik dari pertanyaan diatas.
Jawaban:
Question 4
a. the picture is attached
b. Primary Treatment aims to reduce the Biochemical Oxygen Demand (BOD) and Total Suspended Solids (TSS) in the wastewater. BOD, in short, is the soluble pollution in the wastewater and TSS are the solids that are in suspension in the wastewater.
c. 1 ppb = 0,001 mg/L = 0,001 ppm = 1000 ppt = 1 mg/m³
35 ppb = 0,035 mg/L = 0,035 ppm = 35.000 ppt = 35 mg/m³
Question 5
a. Municipal solid waste, hazardous waste, medical waste
b. First, we had to identify the chemical pollutants. Therefore we could choose what consortium of microorganism we use to treat the soil.
c. Improper handling and transportation of solid waste could affect to
- soil contamination
- water contamination
- air contamination
- bad impact on human health
- also bad impact on animals and marine life
d. The best solution is good waste management by :
- identifying waste, into three types : nonhazardous solid waste, recyclable waste, and hazardous waste.
- evaluate waste if it could be recycled, composted, or any hazardous material.
- manage waste with good handling and disposal as the regulation.
Penjelasan:
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Last Update: Sat, 13 May 23