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Romashka [77]
2 years ago
13

A company that handles hazardous waste wants to open up a central disposal centre. The objective is to minimize the total shippi

ng cost to the disposal centre from five receiving stations it operates. Given the locations of the receiving stations and the volumes to be shipped daily below, determine the location of the disposal centre.

Geography
2 answers:
amid [387]2 years ago
6 0

Answer:

A secure landfill

Explanation:

Landfilling of hazardous solid or containerized waste is regulated more stringently than landfilling of municipal solid waste. Hazardous wastes must be deposited in so-called secure landfills, which provide at least 3 metres (10 feet) of separation between the bottom of the landfill and the underlying bedrock or groundwater table. A secure hazardous-waste landfill must have two impermeable liners and leachate collection systems. The double leachate collection system consists of a network of perforated pipes placed above each liner. The upper system prevents the accumulation of leachate trapped in the fill, and the lower serves as a backup. Collected leachate is pumped to a treatment plant. In order to reduce the amount of leachate in the fill and minimize the potential for environmental damage, an impermeable cap or cover is placed over a finished landfill.

A groundwater monitoring system that includes a series of deep wells drilled in and around the site is also required. The wells allow a routine program of sampling and testing to detect any leaks or groundwater contamination. If a leak does occur, the wells can be pumped to intercept the polluted water and bring it to the surface for treatment.

One option for the disposal of liquid hazardous waste is deep-well injection, a procedure that involves pumping liquid waste through a steel casing into a porous layer of limestone or sandstone. High pressures are applied to force the liquid into the pores and fissures of the rock, where it is to be permanently stored. The injection zone must lie below a layer of impervious rock or clay, and it may extend more than 0.8 km (0.5 mile) below the surface. Deep-well injection is relatively inexpensive and requires little or no pretreatment of the waste, but it poses a danger of leaking hazardous waste and eventually polluting subsurface water supplies.

masha68 [24]2 years ago
4 0

Answer:disposal center should be located at 6.0, 6.0

Explanation:

x=∑xiQi∑Qi=10(26)+4(9)+4(25)+2(30)+8(40)/130=6.0(round to 1 decimal)

´y=∑yiQi∑Qi=5(26)+1(9)+7(25)+6(30)+7(40)/130=6.0(round to 1 decimal)

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