Treatment method for greenhouse turtle breeding wastewater

Abstract

The invention discloses a treatment method for greenhouse turtle breeding wastewater. By regarding an enhanced biofiltration system and a deep fluid water planting vegetable bed as a core, organically combining biological and ecological treatment, the method comprises the following specific steps: firstly introducing the greenhouse turtle breeding wastewater into a quick sedimentation basin to remove suspension in the wastewater; then introducing the wastewater into the enhanced biofiltration system to remove degradable organic matters and pollutants such as nitrogen and phosphorus; and flowing the tail water into the deep fluid water planting vegetable bed to perform deep treatment, and further removing nitrogen and phosphorus through synergistic effect of vegetable growth absorption and microorganism at roots. According to the method, the process is simple, the management and the maintenance are convenient, the effect is stable, the operation cost is low and the economic benefit is significant.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a treatment method for greenhouse soft-shelled turtle breeding wastewater. Background technique [0002] Turtle is rich in nutrition, containing protein, fat, calcium, iron, animal glue, keratin and multivitamins. It is a rare tonic and a treasure of aquatic products. my country is the country with the largest scale of soft-shelled turtle breeding in the world. With the improvement of people's living standards in our country, domestic consumption of soft-shelled turtles is increasing day by day. After my country's entry into WTO, high-quality soft-shelled turtles and other aquatic products are gradually going abroad and exported to Southeast Asia, Japan and other regions. It has greatly promoted the development of soft-shelled turtle farming, with an average annual growth rate of 26%. [0003] Since the 1980s, my country has begun to raise industrialized high-densit...

AI Technical Summary

Problems solved by technology

At present, there is no set of treatment methods for the water quality of greenhouse turtle breeding wastewater, high pollutant removal efficiency, simple operation and management, and suitable for popularization and application. Most of the wastewater from greenhouse turtle farms is directly discharged without any treatment, resulting in rich water in the surrounding water. Nutritization seriously affects the surrounding ecological environment and the physical and mental health of residents. Complaints occur from time to time, which seriously restricts the healthy development of the greenhouse soft-shelled turtle farming industry.

[0005] Greenhouse soft-shelled turtle breeding wastewater has high TN content and relatively low COD concentration, which belongs to low C / N ratio wastewater. The traditional biological denitrification method must add carbon source, which is poor in economy and operability

At the same time, the farming scale of soft-shelled turtles in rural areas is small, and the drainage volume and water quality are related to the growth stages of soft-shelled turtles, and the dynamic changes are large.

Images