Fish Poly Culture in Domestic Wastewater Ponds: A Step Towards Protein Rrecovery and Pollution Reduction

Sharique A. Ali
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Abstract

Reclamation or recycling wastewater is an alternative to the gradual degradation of natural water resources. Reused or domestic sewage is highly loaded with nutrients, suspended solids, organic and inorganic matter, and microorganisms that provide natural food for several species of edible fishes. The effluent contains excessive nutrients which may increase the growth of aquatic plants and stimulate the production of natural food for fish. Oxidation ponds or stabilization ponds in the tropics are recognized as effective and economical units for the treatment of domestic sewage as well as biodegradable industrial wastes if managed properly. The driving force in a waste oxidation pond is solar energy utilized by active continuous photosynthesis. The action of sunlight on algae in the pond enables them to grow and rapidly consume the nutrients contained in the sewage. The algae and bacteria play an inter-dependent symbiotic role in these ponds, while the algae use the nutrients and carbon dioxide by bacterial decomposition, the bacteria make use of the oxygen liberated by the algae during photosynthesis, consequently increasing the rich natural biomass for the fishes. Updated compiled information in this review article suggests that domestic waste-water aquaculture is one of the best alternative ways to remove eutrophication as well as increase the culture of poly carps. This domestic sewage-purification cum reclamation bioprocess can be one of the cheapest methods, where natural sunlight, tropical conditions and biological parameters if managed judiciously, can be recycled and reclaimed for economically viable fish culture.
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生活污水池中的鱼类多元养殖:实现蛋白质回收和减少污染的一步
再生或回收废水是替代自然水资源逐渐退化的一种方法。再利用或生活污水富含营养物质、悬浮固体、有机和无机物质以及微生物,为几种可食用鱼类提供天然食物。污水中含有过量的营养物质,可能会增加水生植物的生长,并刺激鱼类天然食物的生产。如果管理得当,热带地区的氧化池或稳定池被认为是处理生活污水和可生物降解工业废物的有效和经济的单元。废物氧化池中的驱动力是通过主动连续光合作用利用的太阳能。阳光对池塘中藻类的作用使它们能够生长并迅速消耗污水中所含的营养物质。藻类和细菌在这些池塘中发挥着相互依赖的共生作用,而藻类通过细菌分解利用营养物质和二氧化碳,细菌利用藻类在光合作用过程中释放的氧气,从而增加鱼类丰富的自然生物量。这篇综述文章中最新汇编的信息表明,生活污水养殖是消除富营养化和增加鲤鱼养殖的最佳替代方法之一。这种生活污水净化和回收生物工艺可能是最便宜的方法之一,如果管理得当,可以回收和回收自然阳光、热带条件和生物参数,用于经济可行的鱼类养殖。
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Bioscience Biotechnology Research Communications
Bioscience Biotechnology Research Communications BIOTECHNOLOGY & APPLIED MICROBIOLOGY-
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