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Compound microbial inoculant for purifying mariculture wastewater

A composite microbial inoculant and composite microbial technology, applied in the field of water treatment, can solve the problems of poor removal of organic matter and heavy metal ions, large head loss, small load and other problems, and achieve excellent ability to decompose water pollutants, repair Water bodies, the effect of increasing the contact space and area

Inactive Publication Date: 2019-03-26
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used immobilized fillers include plastic products such as quartz sand, ceramics, and synthetic fibers. These fillers have small loading capacity, low biomass, and large head loss, and the removal effect on organic matter and heavy metal ions is not good.

Method used

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  • Compound microbial inoculant for purifying mariculture wastewater
  • Compound microbial inoculant for purifying mariculture wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of the composite microbial bacterial agent for purifying seawater aquaculture wastewater, the steps are as follows:

[0035]1) Mix nano-titanium dioxide, nano-silicon dioxide, medical stone powder and bamboo charcoal powder evenly at a mass ratio of 2.5:1.5:2.8:3.2, place in a temperature-controlled furnace, start at 80°C, and start at 80°C per minute. The heating rate of ℃ is raised to 400 ℃, and the temperature is kept for 2.5 hours, and then the temperature is raised to 1000-1200 ℃ with a heating rate of 15 ℃, and the temperature is kept for 2 hours for activation treatment, and the adsorption carrier is obtained after natural cooling; the nano-titanium dioxide used is anatase nano-titanium dioxide , the particle size is between 15-50nm; the particle size of the nano silicon dioxide used is between 10-35nm.

[0036] 2) Sodium bicarbonate and citric acid are separately granulated, dried, and mixed uniformly at a weight mixing ratio of 2:1 to obt...

Embodiment 2

[0046] Divide 8 PE buckets with a capacity of 20L into 4 groups at random, and each group has two parallels. Inject 10L of mariculture wastewater in the coastal waters of the Yellow Sea of ​​Qingdao into each bottle. After the water body is stable, add 20mg of compound microbial agent, control agent 1, control agent 2 and control agent 3 respectively, and let it stand at constant temperature for 20 days for microbial restoration. After 20 days, detect ammonia nitrogen, nitrite nitrogen, total nitrogen, total phosphorus, suspended solids, chemical oxygen demand and the number of single harmful Vibrio colonies; the background value of water quality is 0.78mg / L of ammonia nitrogen and 105.63mg of nitrite nitrogen / L, total nitrogen 123.56mg / L, total phosphorus 1.4mg / L, suspended solids 29.5mg / L, chemical oxygen demand 108.42mg / L, and 72 single colonies of harmful Vibrio. The test results are shown in Table 1.

[0047] Table 1 Comparison of the purification treatment effect of co...

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Abstract

The invention discloses a compound microbial inoculant for purifying mariculture wastewater. The compound microbial inoculant comprises a compound microbial flora, an adsorption vector and an effervescent auxiliary material, wherein the compound microbial flora is primarily composed of pseudomonas SC221-M and bacillus subtilis. The adsorption vector comprises nano titanium dioxide, nano silicon dioxide, medical stone flour and bamboo carbon powder. The effervescent auxiliary material is preferably carbonate and an organic acid. The invention also discloses a preparation method of the compoundmicrobial inoculant for purifying mariculture wastewater. The invention has the beneficial effects that the compound microbial inoculant is prepared by mixing the compound microbial flora, the adsorption vector and the effervescent auxiliary material, wherein the specific surface area, adsorptivity, biocompatibility and good microorganism fixing property of the adsorption vector is coordinated with gas buoyancy generated by the effervescent auxiliary material to increase the contact area of the compound microbial inoculant and the mariculture wastewater, enhance the degrading ability to pollutants and remove wastewater pollutants effectively, so as to achieve the purpose of purifying the mariculture wastewater.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a composite microbial bacterial agent for purifying mariculture wastewater. Background technique [0002] Due to the defects in the ecological structure and breeding methods of aquaculture itself, the marine aquaculture industry has caused serious pollution of offshore water bodies, such as eutrophication of water bodies, changes in the depositional environment, pollution from antibiotic use, etc., resulting in a decrease in the dissolved oxygen (DO) content of regional water bodies, and aquaculture organisms A large number of deaths, large-scale reproduction of anaerobic bacteria, and damage to the marine ecological environment have caused major economic losses to aquaculture operators; at the same time, algal toxins secreted by red tide poisonous algae caused by eutrophication of water bodies are enriched by shellfish, and humans eat shellfish. Humans can cause poisonin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/30C02F101/38C02F103/20C02F103/08
CPCC02F3/34C02F2101/30C02F2101/38C02F2103/08C02F2103/20
Inventor 王斌李彬武敏敏景斐张建设
Owner ZHEJIANG OCEAN UNIV
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