A black and smelly water body sludge improver and preparation method thereof

Abstract

The present invention discloses a black and odorous water body sediment improver and a preparation method thereof. The black and odorous water body sediment improver comprises components such as potassium ferrate, polyaluminium chloride, composite bacteria, defoaming agent, starch and zeolite, and the composite bacteria is composed of photosynthetic bacteria, yeast, Bacillus subtilis and Bacillus licheniformis in a mass ratio of 3-5:2-4:1-3:1-3. The black and odorous water body sediment improver of the present invention can completely decompose organic matter, adsorb and fix eutrophic substances, completely change the sediment environment, promote the reproduction and growth of microorganisms and aquatic animals in the water body, and thus accelerate the recovery of the ecosystem. The preparation method of the black and odorous water body sediment improver proposed by the present invention is simple, easy to operate, and suitable for mass production; the improved sediment can be used as fertilizer, which improves the utilization efficiency of the sediment and has good economy.

Description

Technical Field

[0001] The invention belongs to the technical field of water body treatment, and specifically relates to a black and smelly water body sludge improver and a preparation method thereof. Background Art

[0002] In the process of urbanization, due to the influence of human activities, a large number of pollutants enter the water body through atmospheric deposition, wastewater discharge, rainwater erosion, etc., and finally settle in the bottom mud and gradually enrich. The bottom mud of eutrophic rivers is generally seriously polluted. The pollutants in the bottom mud are repeatedly mixed with the water body, making it difficult for the water quality to meet the standards. The aggravation of bottom mud pollution is mainly caused by human factors. During the rapid economic development, a large number of difficult-to-degrade, high-concentration pollutants enter the river, and the pollutants accumulate in the river bottom mud, which will cause the water body to become black and smelly. The key to the management of the river and the restoration of water quality lies in the solution of bottom mud pollutants. Summary of the invention

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a black and smelly water body sediment improver that can prevent the sediment from becoming black and smelly and reduce the odor of the water body.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: to provide a black and smelly water body sludge improver, comprising the following components in parts by weight:

[0005] 4-6 parts of potassium ferrate, 1-3 parts of polyaluminium chloride, 1-3 parts of composite bacteria, 0.5-1.5 parts of defoaming agent, 0.1-0.5 parts of starch and 1-2 parts of zeolite.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the black and odorous water body sludge improver of the present invention comprises the following components in parts by weight:

[0008] 5 parts of potassium ferrate, 2 parts of polyaluminium chloride, 2 parts of composite bacteria, 1 part of defoamer, 0.2 parts of starch and 1 part of zeolite.

[0009] Furthermore, the composite bacteria is composed of photosynthetic bacteria, yeast, Bacillus subtilis and Bacillus licheniformis in a mass ratio of 3-5:2-4:1-3:1-3.

[0010] Furthermore, the mass ratio of photosynthetic bacteria, yeast, Bacillus subtilis and Bacillus licheniformis in the composite bacteria is 4:3:2:1.

[0011] The black and odorous water body sludge improver of the present invention is prepared by the following steps:

[0012] S1: Weigh the formulated amount of potassium ferrate and polyaluminium chloride and mix them evenly, and ball-mill the mixture into a powder with a particle size of 5 to 15 μm;

[0013] S2: Weigh the starch in the formula amount and add it to the powder obtained in S1 and mix well. Mix the mixture with water at a solid-liquid ratio of 1:8-10 g / mL, and shear and stir at a speed of 2000 rpm for 15-20 min.

[0014] S3: Filter and squeeze the water content of the filtrate to 15-20%, inoculate the mixed bacteria into the filtrate, and culture at 27-35°C for 2-4 days;

[0015] S4: drying the mixture after the incubation in S3 at 45-50° C. until the water content is less than 5%, and then crushing the dried product into a powder with a particle size of 5-15 μm;

[0016] S4: Weigh the defoaming agent and zeolite in the formula amount, add them to the powder obtained in S3 and mix well to obtain.

[0017] The preparation method of the present invention can be further improved as follows based on the above technical solution.

[0018] Further, the mixed powder in S2 was mixed with water at a solid-liquid ratio of 9 g / mL; and the shear stirring time was 18 min.

[0019] Furthermore, the culture temperature in S3 was 30°C and the culture time was 3 days.

[0020] The beneficial effects of the present invention are:

[0021] 1. The black and odorous water body sediment improver of the present invention can completely decompose organic matter, adsorb and fix eutrophic substances, completely change the sediment environment, promote the reproduction and growth of microorganisms and aquatic animals in the water body, and thus accelerate the recovery of the ecosystem.

[0022] 2. The black and odorous water body sludge improver formula proposed by the present invention has good flocculant effect, is safe and non-toxic, does not pollute the environment, and can effectively and quickly settle suspended matter in river water, having the effect of purifying water quality. The composite bacteria in the formula have good adaptability, yeast and bacillus can quickly decompose the sludge by microorganisms, improve the nutrition of the sludge, avoid agglomeration and deterioration, and photosynthetic bacteria can photosynthesize, increase the oxygen content in the water, improve the water quality, and indirectly improve the quality of the sludge. The zeolite in the formula can adsorb toxic substances in the sludge to prevent diffusion, and has a good deodorizing effect.

[0023] 3. The preparation method of the black and odorous water body sludge improver proposed by the present invention is simple, easy to operate, and suitable for mass production; the improved sludge can be used as fertilizer, which improves the utilization efficiency of the sludge and has good economy. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described in detail below with reference to the embodiments.

[0025] Example 1

[0026] A black and smelly water body sludge improver, comprising the following components in parts by weight:

[0027] 5 parts of potassium ferrate, 2 parts of polyaluminium chloride, 2 parts of composite bacteria, 1 part of defoaming agent, 0.2 parts of starch and 1 part of zeolite; the composite bacteria is composed of photosynthetic bacteria, yeast, Bacillus subtilis and Bacillus licheniformis in a mass ratio of 4:3:2:1.

[0028] The black and odorous water body sediment improver in this embodiment is prepared by the following steps:

[0029] S1: Weigh the formulated amount of potassium ferrate and polyaluminium chloride and mix them evenly, and ball-mill the mixture into a powder with a particle size of about 10 μm;

[0030] S2: Weigh the starch in the formula and add it to the powder obtained in S1 and mix well. Mix the mixture with water at a solid-liquid ratio of 1:9 g / mL and shear stir at a speed of 2000 rpm for 18 min.

[0031] S3: Filter and squeeze the water content of the filtrate to about 20%, inoculate the mixed bacteria into the filtrate, and culture at 30°C for 3 days;

[0032] S4: drying the mixture after the incubation in S3 at 45°C until the water content is less than 5%, and then crushing the dried product into a powder with a particle size of about 10 μm;

[0033] S5: Weigh the defoamer and zeolite in the formula amount, add them to the powder obtained in S3 and mix well to obtain.

[0034] Example 2

[0035] A black and smelly water body sludge improver, comprising the following components in parts by weight:

[0036] 4 parts of potassium ferrate, 3 parts of polyaluminium chloride, 1 part of composite bacteria, 1.5 parts of defoaming agent, 0.1 parts of starch and 2 parts of zeolite; the composite bacteria is composed of photosynthetic bacteria, yeast, Bacillus subtilis and Bacillus licheniformis in a mass ratio of 3:4:1:3.

[0037] The black and odorous water body sediment improver in this embodiment is prepared by the following steps:

[0038] S1: Weigh the formulated amount of potassium ferrate and polyaluminium chloride and mix them evenly, and ball-mill the mixture into a powder with a particle size of about 5 μm;

[0039] S2: Weigh the starch in the formula and add it to the powder obtained in S1 and mix well. Mix the mixture with water at a solid-liquid ratio of 1:8 g / mL and shear and stir at a speed of 2000 rpm for 15 min.

[0040] S3: Filter and squeeze the water content of the filtrate to about 15%, inoculate the mixed bacteria into the filtrate, and culture at 27°C for 4 days;

[0041] S4: drying the mixture after the incubation in S3 at 50°C until the water content is less than 5%, and then crushing the dried product into a powder with a particle size of about 5 μm;

[0042] S5: Weigh the defoamer and zeolite in the formula amount, add them to the powder obtained in S3 and mix well to obtain.

[0043] Example 3

[0044] A black and smelly water body sludge improver, comprising the following components in parts by weight:

[0045] 6 parts of potassium ferrate, 1 part of polyaluminium chloride, 3 parts of composite bacteria, 0.5 parts of defoaming agent, 0.1 parts of starch and 2 parts of zeolite; the composite bacteria is composed of photosynthetic bacteria, yeast, Bacillus subtilis and Bacillus licheniformis in a mass ratio of 5:2:3:1.

[0046] The black and odorous water body sediment improver in this embodiment is prepared by the following steps:

[0047] S1: Weigh the formulated amount of potassium ferrate and polyaluminium chloride and mix them evenly, and ball-mill the mixture into a powder with a particle size of about 15 μm;

[0048] S2: Weigh the starch in the formula and add it to the powder obtained in S1 and mix well. Mix the mixture with water at a solid-liquid ratio of 1:10 g / mL and shear stir at a speed of 2000 rpm for 20 min.

[0049] S3: Filter and squeeze the water content of the filtrate to about 20%, inoculate the mixed bacteria into the filtrate, and culture at 35°C for 2 days;

[0050] S4: drying the mixture after the incubation in S3 at 45°C until the water content is less than 5%, and then crushing the dried product into a powder with a particle size of about 15 μm;

[0051] S5: Weigh the defoamer and zeolite in the formula amount, add them to the powder obtained in S3 and mix well to obtain.

[0052] Although the specific implementation of the present invention is described in detail in conjunction with the embodiments, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A method for preparing a black and smelly water body sludge improver, It is characterized in that The improver includes the following components in parts by weight: 4-6 parts of potassium ferrate, 1-3 parts of polyaluminium chloride, 1-3 parts of composite bacteria, 0.5-1.5 parts of defoaming agent, 0.1-0.5 parts of starch and 1-2 parts of zeolite, wherein the composite bacteria is composed of photosynthetic bacteria, yeast, Bacillus subtilis and Bacillus licheniformis in a mass ratio of 3-5:2-4:1-3:1-3; The preparation method comprises the following steps: S1: Weigh the formulated amount of potassium ferrate and polyaluminium chloride and mix them evenly, and ball-mill the mixture into a powder with a particle size of 5 to 15 μm; S2: Weigh the starch in the formula amount and add it to the powder obtained in S1 and mix well. Mix the mixture with water at a solid-liquid ratio of 1:8-10 g / mL, and shear stir at a speed of 2000 rpm for 15-20 min; S3: Filter and squeeze the water content of the filtrate to 15-20%, inoculate the mixed bacteria into the filtrate, and culture at 27-35°C for 2-4 days; S4: drying the mixture after the incubation in S3 at 45-50° C. until the water content is less than 5%, and then crushing the dried product into a powder with a particle size of 5-15 μm; S5: Weigh the defoamer and zeolite in the formula amount, add them to the powder obtained in S3 and mix well to obtain.

2. The preparation method according to claim 1, Features: The mixture in S2 was mixed with water at a solid-liquid ratio of 9 g / mL; the shear stirring time was 18 min.

3. The preparation method according to claim 1, Features: The culture temperature in S3 was 30°C and the culture time was 3 days.

4. The preparation method according to claim 1, Features: The improver comprises the following components in parts by weight: 5 parts of potassium ferrate, 2 parts of polyaluminium chloride, 2 parts of composite bacteria, 1 part of defoaming agent, 0.2 parts of starch and 1 part of zeolite.

5. The preparation method according to claim 1, Features: The mass ratio of photosynthetic bacteria, yeast, Bacillus subtilis and Bacillus licheniformis in the composite bacteria is 4:3:2:1.