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PRELIM ENVI ENG:
STORAGE COLLECTION TRANSFER AND TRANSPORT
| Question | Answer |
|---|---|
| interim containment of solid waste after generation and prior to collection for ultimate recovery or disposal.(RA 9003 | Storage |
| Purpose: Isolate waste from the environment. | Storage |
| ▪ Minimum space requirements. ▪ Accessible for collection. ▪ Minimal cost in proportion to hygiene and aesthetics. ▪ Presentable, sanitary and comparatively low cost | criteria for storing MSW |
| • Easily carried i.e., portable and light. • Water tight, durable and non- corrosive. • Metal or plastic cans/drums. • Plastic bags: 5-30 gal capacity. • Residential: 10 – 30 kg | specific criteria of residential waste |
| Accessible to both throwing and collecting. • Shredding or compacting prior to storage. • Black plastic bags / garbage bin: 15 kgs maximum. • Used oil drums | Commercial & institutional waste |
| are 55-gallon (200 L) containers for oil/liquids. They are heavy (16–18 kg empty), need two workers to lift, may collect rainwater if uncovered, and reduce collection efficiency while increasing costs | Used drum oils |
| Process waste emanating from industrial processes must be separately contained; if possible, do not mix bulky or voluminous waste | Industrial waste |
| Non-process waste from canteen, comfort rooms, office must be contained/stored separately. | Industrial waste |
| NEVER combine the storage of process and non-process waste: • Could be disposed easily if without dirt. • Could be toxic/reactive. • Could be recycled | Industrial waste |
| are completely enclosed, self-supporting structures (i.e., they have four walls, a roof, and a floor) used to store or treat non-containerized hazardous waste. | Containment buildings |
| the act of removing solid waste from the source or from a communal storage point. (RA 9003) | Collection |
| This entails the regular and systematic gathering of waste from various storage sites and pick-up points, hauling them to transfer stations, processing and recovery facilities, or to final disposal sites | Collection |
| the most expensive SWM element, usually accounting for 40% to 80% of waste management costs | Collection |
| Under RA 9003 the____ is responsible for collecting non-recyclable materials and special wastes, while barangay units are given the task and responsibility of collecting and segregating the biodegradable, compostable, and reusable wastes. | local government |
| ▪ Public Health (health of citizens). ▪ Environmental sustainability. ▪ Community aesthetics. ▪ Economic development. | Reasons for refuse collection |
| ▪ Vehicles. ▪ Labour. ▪ Operation and Maintenance. | Elements of refuse collection |
| ▪ Labour. ▪ Traffic. ▪ Cost of maintenance. ▪ Occupational hazard. | Major Problems |
| ▪ Types of waste to be collected ▪ Types of service user ▪ Ease of accessibility ▪ Constraints | Important points to consider for collection |
| 1. Directly empty portable containers into the collection vehicle. 2. Empty portable containers into a transfer container, then to the vehicle. 3. Move ground-level waste to a secondary container or shovel directly into the vehicle. | Waste Transfer Methods: |
| Travel to/from the work area. Collection process: transferring waste to the vehicle and moving between collection points. Delivery: transporting vehicle contents to the disposal site. | solid waste collection components |
| ▪ Character of waste. ▪ Climate. ▪ Communal or home storage. ▪ Characteristics of the dwelling or shop. ▪ Duties of the residents. ▪ Cost | Collection frequency of collection |
| ________ of waste becomes apparent during the first 2 days, thus it is more important to dispose the refuse at once even if no flies have been produced. Therefore, TWICE weekly collection is preferable | Decomposition |
| more rapid in tropical countries like RP than in temperate ones. | Decomposition |
| Twice weekly collection is the minimum recommended frequency | Decomposition |
| Home storage could tolerate less frequent collection since fly generation could be less a nuisance if properly covered. | Communal or Home Storage |
| Communal storage demands a daily or at least 3 times weekly frequency. Refuse collected from communal containers may no longer be fresh and could contain fly larvae already. | Communal or Home Storage |
| a very costly service and it is wise to find the system which is most appropriate to local conditions in terms of quality service and cost of operation | Refuse Collection Vehicles |
| Load must be covered during transport (e.g., net, tarp) at ≥30 kph. Loading height ≤1.6 m. Vehicle body must have mechanical/powered unloading (e.g., hydraulic tipping). | Collection Vehicle Design Requirements: |
| 1. Compactor trucks. 2. Standard commercial trucks (with extended sideboard to increase capacity) 6 wheelers, 8-10 tons payload capacit | types of collection trucks |
| Depending on the containers to be cleared each day, the route for lifting containers may be worked out avoiding zigzag movement of vehicles to the extent possible. This will save a lot of fuel and time. | Routing of Vehicles |
| Vehicles can operate in two shifts to maximize fleet use and reduce the need for new vehicles. Night transport helps avoid daytime traffic congestion. Night work boosts productivity and lowers service costs | Use of Vehicles in Two Shifts: |
| Use small vehicles for direct waste loading in congested areas. Park vehicles at suitable locations during collection. Sweepers transfer waste from handcarts directly into these vehicles. | Transportation from Congested Areas: |
| Facilities that receive solid waste for temporary storage, separation, processing, or to transfer waste from smaller to larger vehicles for transport. | transfer stations (ra 9003) |
| Facilities processing waste per national standards. Facilities handling pre-separated, reusable waste. Licensed operators’ premises where processing is incidental to collection/disposal. | Exclusions from “Transfer Stations” (RA 9003): |