HKIE Professional Assessment - Environmental Discipline case studies
HKIE Professional Assessment - Environmental Discipline · Put your knowledge to work in context.
The HKIE Professional Assessment - Environmental Discipline is the professional-level assessment pathway for engineers in Hong Kong seeking recognition in the environmental discipline through The Hong Kong Institution of Engineers (HKIE). It is aimed at graduate engineers who have completed accredited academic study and structured training and are ready to demonstrate competence at professional level. The HKIE Professional Assessment - Environmental Discipline case studies are 5 cases and about 3,348 words.
1Ammonia breakthrough at a municipal activated-sludge plant
A 25,000 m³/d municipal activated-sludge plant with anoxic/aerobic tanks and secondary clarifiers must meet an effluent ammonia limit of 5 mg/L. Influent ammonia has risen from 25 to 35 mg/L NH3-N, and influent alkalinity is 190 mg/L as CaCO3.
712 words, about 4 min2Contaminated soil described as inert fill
You are the site-based environmental engineer for a consultant on a 40-hectare former industrial site reclamation in Hong Kong. Excavation has produced about 8,000 m³ of soil.
696 words, about 3 min3Construction noise permit for rock breaking near flats
A contractor is preparing a construction noise permit application for six months of sheet-pile driving and rock breaking for a footbridge foundation. The nearest residential block is 18 m from the site boundary and has windows facing the works; a second block is 55 m away.
654 words, about 3 min4Pressure test witnessing beyond a graduate's competence
You are a graduate engineer with 22 months' experience on a water supply project. The resident engineer is on leave.
685 words, about 3 min5Effluent discharge to a small stream with a downstream fish pond
A developer proposes to discharge 4,000 m³/d of secondary-treated effluent to a 6 m wide, 0.8 m deep stream. Dry-weather stream flow is 0.35 m³/s, upstream BOD5 is 2 mg/L and dissolved oxygen is 7.5 mg/L.
601 words, about 3 min