Mô hình công nghệ xử lý nước thải cho nuôi tôm thẻ chân trắng tập trung vùng triều tại Hà Tĩnh

Abstract

The ​​white-leg shrimp farming area has increased dramatically in the period from 2011 to 2015. In recent years, the area of ​​abandoned aquaculture is increasing due to inefficient farming; environmental pollution, widespread disease. Farming area has decreased rapidly such as the concentrated shrimp farming area is abandoned mainly in the big estuary mouths. Besides the immediate socio-economic benefits, intensive and ultra-intensive white-leg shrimp farming in the tidal areas of without water circulation are still facing potential environmental problems caused the disease occurs regularly leading unsustainable development of shrimp industry. One of the causes of environmental pollution is that the untreatment waste released directly into the environment. In this article, the authors will present the results of the study on the model of wastewater treatment technology for intensive white-leg shrimp farming in tidal area at the farm of Mr. Le Van Loan in Thach Dinh commune, Thach Ha district, Ha Tinh province. It is three-pond model: treatment pond 1 - treatment pond 2 - environment. The results show that post treatment water meets National Standard when discharged into the environment. Accordingly, the authors propose to apply this wastewater treatment technology for intensive and ultra-intensive white-leg shrimp farming in central coastal provinces, contributing to mitigate environmental pollution, reduce diseases, improve the economic efficiency and sustainable development of tidal shrimp farming.

Key words: waste water treatment, white-leg shrimp, seaweed, treatment pond.