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Preparation method and application of slow-release material for treating water pollution

A slow-release material and water pollution technology, applied in the field of microorganisms, can solve the problems of weak treatment effect and ineffective embedding carrier, and achieve the effect of long-term water purification, reduction of organic matter and ammonia nitrogen content, and increase of dissolved oxygen in water

Inactive Publication Date: 2020-09-11
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing embedding and immobilization technology can only exert the purification effect of the microorganism itself, while the embedding carrier cannot play an effective role, and the treatment effect is weak

Method used

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  • Preparation method and application of slow-release material for treating water pollution
  • Preparation method and application of slow-release material for treating water pollution
  • Preparation method and application of slow-release material for treating water pollution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embed commercially available photosynthetic bacteria according to the technical scheme of the present invention, and the live bacteria content of the bacterial preparation is 5 × 10 8 cfu / mL-5×10 9 cfu / mL, the dosage in the original product instructions is to splash 100g per acre of water at a depth of 1 meter, and use it once every 10-15 days. Add chitosan into water whose pH is adjusted to 4-5 with acetic acid at a mass-volume ratio of g / mL of 1:100, and stir until completely dissolved; weigh a total of 20 g of chitosan, and add it to 2 L of acetic acid aqueous solution; quickly add 1 L of 0.1 mol / L sodium carbonate solution, fully stirred; add 100g of photosynthetic bacteria; use acetic acid to adjust the pH of the solution to 6.5-7.5, the solution gradually precipitates out, stir well and let it stand at 4°C for half an hour, filter it with Buchner funnel, and The precipitate was filtered out, spread until almost dry, and weighed, about 120g.

[0024] Two ponds wi...

Embodiment 2

[0040] Embed commercially available composite bacillus (comprising Bacillus licheniformis, Bacillus subtilis, Bacillus lateralis, Bacillus pumilus by technical scheme of the present invention, live bacteria content 100 * 10 8 cfu / mL-200×10 9 cfu / mL), the dosage of the original commodity instructions is 1 meter of water depth per 10-12 mu of water surface, the dosage is 0.5-1kg, and it is used once every 10-15 days. Add chitosan into water whose pH is adjusted to 4-5 with acetic acid at a mass-volume ratio of g / mL of 1:200, and stir until completely dissolved; weigh 100 g of chitosan in total, and add it to 20 L of acetic acid aqueous solution; quickly add 5 L of 0.1 mol / L sodium carbonate solution, fully stirred; add 500g of complex Bacillus; adjust the pH of the solution to 6.5-7.5 with acetic acid, the solution gradually precipitates out, stir well and let it stand at 4°C for half an hour, then suction filter through a Buchner funnel. Filter out the precipitate, spread it u...

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Abstract

The invention discloses a preparation method and application of a slow-release material for treating water pollution, and the preparation method comprises the following steps: adding chitosan into water of which the pH is adjusted to 4-5 by acetic acid, and stirring the mixture until the chitosan is completely dissolved; rapidly adding a sodium carbonate solution into the chitosan by 40-60 mL of the sodium carbonate solution to each gram of chitosan, and fully stirring the mixture to obtain a chitosan solution; adding a functional microbial agent for embedding; adjusting the pH value of the solution to 6.5-7.5 by using acetic acid, separating out precipitates, and fully stirring and standing the precipitate, and filtering and drying the mixture to obtain the slow-release material. The slow-release material embedding microbial inoculum is used for treating sewage, and can achieve the effects of purifying water for a long time, effectively reducing the contents of organic matters and ammonia nitrogen in water, accelerating nitrite decomposition, flocculating suspended matters in water, increasing dissolved oxygen in water and the like.

Description

technical field [0001] The invention relates to a preparation method and application of a slow-release material for controlling water pollution, belonging to the technical field of microorganisms. Background technique [0002] Water pollution is water that reduces or loses the use value of water caused by harmful chemicals and pollutes the environment. Acids, alkalis, oxidants, and compounds such as copper, cadmium, mercury, and arsenic in sewage, organic poisons such as benzene, dichloroethane, and ethylene glycol, will kill aquatic organisms and affect drinking water sources and scenic spots. When the organic matter in the sewage is decomposed by microorganisms, the oxygen in the water is consumed, which affects the life of aquatic organisms. After the dissolved oxygen in the water is exhausted, the organic matter undergoes anaerobic decomposition, producing hydrogen sulfide, mercaptan and other unpleasant gases, which further deteriorates the water quality. [0003] With...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/16C02F101/30
CPCC02F3/34C02F2101/16C02F2101/166C02F2101/30
Inventor 邵美涵王曹甘泓卞诗倩郑晓璇孙慧莹钱建瑛周莹史劲松
Owner JIANGNAN UNIV
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