Preparation method of nitrite reduction bottom modification agent

Abstract

The invention discloses a preparation method of a nitrite reduction bottom modification agent, the nitrite reduction bottom modification agent is prepare from humic acid, zeolite powder, bentonite, a denitrifying bacillus solid, bacillus cereus solid and a nitrifying bacteria solid as raw materials in prescribed amount respectively by the steps of crushing, mixing, granulating, drying and cooling in the air. The method is simple in operation, easily available in raw materials and low in cost, the nitrite reduction bottom modification agent produced by the method can effectively control water body PH in 7.50-8.50, improve water body transparency to 5.3-12.8cm, increase DO (dissolved oxygen) content to 25.67%-32.56%, reduce the content of COD (chemical oxygen demand), PO4-P and nitrite in water body respectively to 28.41%-59.63%, 30.28%-64.58% and 56.32%-86.74%, effectively inhibit the overgrowth of algae in the water body, and improve eutrophication status of aquaculture water bodies.

Description

[0001] technical field [0002] The invention belongs to the technical field of nitrite reducing methods, and in particular relates to a preparation method of a nitrite reducing bottom modifier. [0003] Background technique [0004] Nitrite is an intermediate product in the process of converting ammonia into nitrate, which is toxic to aquatic animals such as fish and shrimp. In some pond water bodies, the phenomenon of high nitrite content is quite serious, and it will rise suddenly without paying attention, leading to the sudden death of fish and shrimp, causing serious economic losses to farmers. Even if the lethal concentration is sometimes not reached, the physiological function disorder will be caused because the content exceeds the tolerance of fish and shrimp, thereby affecting growth or causing other diseases. At present, the method of reducing nitrite usually adopts oxidation method (directly put several strong oxidizing disinfectants such as trichloroisocyanuric...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned defects existing in the prior art field, the object of the present invention is to provide a preparation method of a nitrite-reducing base modifier, which solves the problem that the use of chemical reagents to degrade nitrite in the prior art is not safe and environmentally friendly, and is easy to repeat.