Shipboard Sewage Collection and Treatment System
- Product Description
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- Commodity name: Shipboard Sewage Collection and Treatment System
- Commodity ID: 1398257472199348224
System Description
1. Dry Waste Recycling and ProcessingDry waste from daily life mainly includes glass products, cans, paper packaging, and potentially medical waste. Glass waste is crushed using a glass crusher and stored for recycling. Cans are compressed and packaged using a can compactor for recycling. Paper packaging is compressed and packaged using a cardboard baler for recycling. Medical waste is crushed using a medical waste crusher and then vacuum-packed using a vacuum packaging machine.2. Kitchen Food Waste Recycling and ProcessingVarious kitchen waste and discarded materials, such as vegetable peels, eggshells, chicken bones, meat bones, fish bones, shrimp shells, leftovers, rice, fruit peels, bread, etc. Openly storing this waste will cause decay and attract flies; therefore, kitchen food waste must be recycled and processed promptly. Kitchen food waste recycling mainly consists of a vacuum collection hopper, a vacuum generator, and a food waste collection cabinet. After crushing and vacuum collection, it can be discharged overboard or ashore, or it can be sent to a dewatering device for dewatering, then dried before being incinerated in an incinerator.Oily wastewater from the kitchen, dining room, and galley can be automatically skimmed using a PY(Z) series oil-water separator. The separated waste oil and residue are automatically discharged into collection buckets at regular intervals, and the wastewater is discharged into a wastewater treatment plant or overboard.3. Waste Drying and IncinerationWith improving living standards, the amount of household waste is increasing. Therefore, simple compression and packaging are no longer sufficient, and an incineration system is necessary. Some dry waste can be directly incinerated, while some can be crushed and stored in a dry waste collection cabinet before incineration. Waste containing moisture must be dried before incineration.4. Vacuum Collection and Treatment of Domestic SewageDomestic sewage is no longer reliant on gravity but is connected to the vacuum pipe system by vacuum. Except when flushing the toilet, the connection between the vacuum toilet and the pipe system is closed. When flushing, the discharge valve on the vacuum toilet opens for a few seconds, connecting the vacuum toilet to the vacuum pipe system. Using the air pressure difference between the outside and the inside of the pipe, the waste in the vacuum toilet is sucked into the pipe system. The urinal in the toilet is connected to a vacuum interface valve, which is connected to the vacuum pipeline. When the wastewater level in the vacuum interface valve reaches a certain level, the valve automatically opens, sucks the wastewater into the vacuum pipeline, and then automatically closes. The vacuum in the pipe system is generated and maintained by a vacuum generating device.Greywater from the kitchen, after pretreatment by an oil skimmer, is stored in a greywater collection cabinet, and waste oil is collected in an oil cabinet and transported to the incinerator by a transfer pump. Bathing and washing greywater from the residential area, after hair removal by a hair filter, is stored in a greywater collection cabinet. The greywater in the greywater collection cabinet can be transported to a domestic sewage treatment plant for treatment, or discharged overboard or ashore in designated areas.5. Sludge DewateringTo save energy before drying and incineration, sludge dewatering equipment is usually installed. The remaining sludge discharged from the wastewater treatment plant is periodically transferred to a dewatering machine for flocculation and dewatering by a sludge discharge pump, then transferred to a dryer for drying before incineration.6. Reclaimed Water Reuse SystemWater is the source of life. To better conserve water resources, improve water utilization, and reduce water pollution, treated water can be recycled. Consider recycling treated water to achieve "zero discharge." Depending on the treatment requirements, the following uses are possible:1) For deck or toilet flushingTo avoid issues related to human use, we suggest separately collecting ship's washing greywater, treating it to standard (ultrafiltration) in a wastewater treatment plant, and then further processing it (nanofiltration) in a reclaimed water reuse device. The water quality after treatment meets the requirements of GB/T 18920-2002 "Water Quality for Urban Miscellaneous Water Reuse," and can be used for deck washing or toilet flushing. This system has been adopted and installed on icebreakers and new nearshore tugboats.2) As a source of shower waterThe reclaimed water after treatment is collected and stored in a reclaimed water tank. To prevent water quality deterioration during storage, an appropriate amount of chlorine is usually added to the collected water. If the stored reclaimed water undergoes further treatment—passing through an activated carbon dechlorination device and then an RO reverse osmosis device—it can also be used as shower water.3) As a source of drinking waterThe water after sufficient treatment by the RO reverse osmosis device, if further treated by a drinking water treatment device, can meet the standards of GB5749-2006 "Hygiene Standards for Drinking Water," and can be used as drinking water.
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