A microbial water purification slow-release device and its preparation method and application

Abstract

The invention discloses a microbial water purification slow-release device and its preparation method and application, comprising a protective shell, a protective agent, a microbial powder and a proliferation promoter, and the protective shell contains a protective agent, a microbial powder and a proliferation promoter Agent, microbial powder and proliferation promoter are embedded in the timed slow-release layer. The microbial water purification slow-release device in the present invention can be kept at a high level for a long time, and the concentration of ammonia nitrogen, nitrite and nitrate is maintained at a relatively high level. In the low state, there is no need for secondary delivery for a long period of time after delivery, which provides great convenience for use.

Description

technical field [0001] The invention relates to a microbial water purification slow-release device, a preparation method and application thereof. Background technique [0002] Traditional aquaculture is dominated by pond aquaculture. Due to the increasing shortage of water resources and land resources, pond aquaculture has low breeding density, poor economic benefits, and increasing costs. Recirculating aquaculture with filters is an inevitable trend of aquaculture at present. However, while recirculating aquaculture adopts a high-density and intensive farming model and obtains huge economic benefits, it also faces many problems. In the process of adopting high-density aquaculture in recirculating aquaculture, due to excessive bait feeding, a large amount of residual bait and excrement of farmed animals will produce a large amount of pollutants such as ammonia nitrogen, nitrite, sulfide, etc., which not only causes water pollution, but also affect the health of farmed anima...

AI Technical Summary

Problems solved by technology

[0004] Microbial cells used to purify aquaculture water are usually directly sprayed and put in, but such products do not protect the microbial cells, and the water flow will directly disperse the microbial cells, resulting in the random growth of the microbial cells on the filter material or water bodies, but cannot be colonized in a specific location, the effect is not obvious

And with the aging of microbial cells, the filter system will fail

In addition, the nutrients added to the products of the prior art are not fully protected or even completely exposed. When the product is in use, harmful bacteria such as E. Nutrients were robbed and utilized before, which promoted the reproduction of harmful microorganisms, and the carriers added in microbial preparations such as light calcium carbonate, zeolite powder, ceramsite, bentonite, diatomaceous earth, porous clay, porous volcanic rock, zeolite, etc. Unable to recycle, causing secondary pollution of water bodies

Invention patent "microbial water purification sustained-release body and its preparation method" (CN101264985A) discloses a microbial water purification slow-release body, which utilizes the pores in porous natural ore particles to provide microbial implantation and medium attachment, although it has Certain slow-release ability, but because there is no protection for microbial cells, there will still be some shortcomings such as being washed away and diluted by water flow, unable to form dominant bacteria, nutrients are used by harmful bacteria, and ore particles cannot be recycled.

The utility model "a microbial generator with long-acting and slow-release function for sewage treatment" (CN206232700U) discloses a microbial generator with long-term and slow-release function for sewage treatment, but there is no The core body of the device is protected, and the microporous filter body is a hollow cylinder at both ends, so the water flow will quickly rush into the core body of the internal device during use, quickly disperse the microbial strains, culture medium and carrier, and remove the original water body. Harmful bacteria are brought into it, causing nutrients to be robbed and utilized in a short period of time, so that when beneficial bacteria recover, there is no nutrient to use, and it is impossible to form a dominant bacterial group

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