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Biosand filters are typically constructed from concrete or plastic. [3] At the top of the filter, a tightly fitted lid prevents contamination and unwanted pests from entering the filter. Below this, the diffuser plate prevents disturbance of the biofilm when water is poured into the filter.
It turned out that the fried seaweed was the best-selling product, surpassing the performance of the chestnuts themselves. This success promoted him to further develop the seaweed business. Tob was interested in the seaweed business and initiated a trial sales effort by packaging them in plastic bags and distributing them to various stores.
Larger sand grains can be used to overcome this problem, but if significant amounts of large solids are in the feed they need to be removed upstream of the sand bed filter by a process such as settling. [5]: 302–303 The depth of the sand bed is recommended to be around 0.6–1.8 m (2–6 ft) regardless of the application.
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Dulse is one of many edible algae. Algaculture may become an important part of a healthy and sustainable food system [11]. Several species of algae are raised for food. While algae have qualities of a sustainable food source, "producing highly digestible proteins, lipids, and carbohydrates, and are rich in essential fatty acids, vitamins, and minerals" and e.g. having a high protein ...
Plastic bags. Styrofoam. Takeout containers. Utensils. Glass. Metal. Liquids. Pet waste. Water hoses. Pet waste shouldn’t be placed in your organics bin. The city strongly suggests people ...
Posidonia oceanica, commonly known as Neptune grass or Mediterranean tapeweed, is a seagrass species that is endemic to the Mediterranean Sea. [2] It forms large underwater meadows that are an important part of the ecosystem.
The sand that is in contact with the casting is called facing sand, and is designed for the casting on hand. This sand will be built up around the pattern to a thickness of 30 to 100 mm (1.2 to 3.9 in). The sand that fills in around the facing sand is called backing sand. This sand is simply silica sand with only a small amount of binder and no ...
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