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Health Policy Issues and Health Programmes in ... - Amazon S3

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Hospital Waste ManagementTreatment Technologies for Liquid WasteTable 3. Advantages <strong>and</strong> Disadvantages of Medical Waste Treatment <strong>and</strong> Disposal MethodsMethod Advantages DisadvantagesSanitary sewer l Most suitable for liquid, body fluids l Least suitable for solids <strong>and</strong> non-(dilution of liquid <strong>and</strong> other bulk liquids biodegradable wastes (metals orwaste l Sanitary sewer systems are designed plastics)to treat biological waste l Requires safety precautions (<strong>and</strong>sometimes facility modification) toprotect workers from splashes <strong>and</strong>aerosolsl Requires approval of local wastewater treatment worksThe st<strong>and</strong>ards for effluents generated from the hospital as recommended by the CentralPollution Control Board (CPCB), GoI, are shown <strong>in</strong> Table 4.Table 4. Effluents Generated from the Hospital Shall Conform to the Follow<strong>in</strong>g Limits:ParametersPermissible LimitpH 6.5–9.0Suspended solids100 mg/1Oil <strong>and</strong> grease10 mg/1Biochemical Oxygen Dem<strong>and</strong>30 mg/1Chemical Oxygen Dem<strong>and</strong>250 mg/1Bioassay test90% survival of fish after 96 hours <strong>in</strong> 100% effluentNote:These limits are applicable to hospitals that are either connected with sewers without a term<strong>in</strong>al sewagetreatment plant or not connected to public sewers at all.Waste Treatment Process Categoriesl Thermal systemsn Inc<strong>in</strong>erator systemsn Autoclave/hydroclave/autoclave systemsn Microwave systemsn Pyrolysis <strong>and</strong> plasma pyrolysis systems.l Chemical treatment systemsl Irradiation systemsl Biological process systems.Thermal Treatment Systems (Inc<strong>in</strong>erator Systems)State-of-the-art combustion technology <strong>in</strong>cludes the follow<strong>in</strong>g:l Two-stage controlled air combustion: first chamber temperature 800°C ± 50°C <strong>and</strong> secondchamber 1200°C ± 50°C with a pollution prevention device called a scrubberl Modulat<strong>in</strong>g burners <strong>and</strong> combustion air blowersl Automatic load<strong>in</strong>g <strong>and</strong> ash removall Controls, <strong>in</strong>strumentation, <strong>and</strong> monitor<strong>in</strong>g.210

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