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Efficient composite biological flocculant for sludge treatment and preparation method thereof

A biological flocculant and sludge treatment technology, applied in the direction of dewatering/drying/concentrating sludge treatment, can solve the problems of unsuitable bacteria survival, affecting the surrounding environment, bacterial species death, etc., achieving a clear mud-water separation interface and convenient material acquisition. , the effect of easy operation

Inactive Publication Date: 2018-11-27
青岛博尔优生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because of its coating, mud and water will be coated together at the same time, so that even if auxiliary materials such as straw and bacteria are added in the later fermentation process, the sludge cannot be truly fermented.
Since the sludge is always in an anaerobic state, it is not suitable for the survival of bacteria, which leads to the death of a large number of bacteria; the longer drying cycle converts the organic matter in the sludge into ammonia, hydrogen sulfide, alkanes and other gases A large amount of water wasted, and the constant stench also seriously affected the surrounding environment

Method used

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  • Efficient composite biological flocculant for sludge treatment and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] The preparation method of the high-efficiency composite biological flocculant for sludge treatment in this embodiment is prepared according to the following steps:

[0025] (1) Add 10 parts of glycine, 10 parts of alanine, 10 parts of leucine, 10 parts of serine, 3 parts of glucuronic acid, 3 parts of galacturonic acid and 2 parts of iduronic acid into the formaldehyde solution, slowly Stir for 25min, collect the supernatant after centrifugation;

[0026] (2) Warm up the supernatant to 40°C, slowly add 25 parts of animal gelatin, and stir at 180rpm for 2.5 hours at 70°C;

[0027] (3) Add 4 parts of compound sulfate chloride salt PBT (mass ratio of polyaluminum chloride sulfate (PACS) to polyaluminum ferric chloride sulfate (PAFCS) = 5:1), stir evenly until completely dissolved, then cool to room temperature, Natural crystallization to obtain flocculant crude product;

[0028] (4) After the crude product is washed and purified with methanol, it is vacuum-dried to obtai...

Embodiment 2

[0030] The preparation method of the high-efficiency composite biological flocculant for sludge treatment in this embodiment is prepared according to the following steps:

[0031] (1) Add 4 parts of leucine, 4 parts of lysine, 2 parts of serine, 2.5 parts of iduronic acid and 2.5 parts of guluronic acid into the formaldehyde solution, stir slowly for 20 minutes, and collect the supernatant after centrifugation liquid;

[0032] (2) Warm up the supernatant to 40°C, slowly add 50 parts of animal gelatin, and stir at 160 rpm for 2 hours at 60°C;

[0033] (3) Add 6 parts of composite sulfate chloride salt PBT (mass ratio of polyaluminum chloride sulfate (PACS) to polyaluminum ferric chloride sulfate (PAFCS) is 5:1), stir evenly until completely dissolved, then cool to room temperature, Natural crystallization to obtain flocculant crude product;

[0034] (4) After the crude product is washed and purified with methanol, it is vacuum-dried to obtain a composite biological flocculant...

Embodiment 3

[0036] (1) Add 15 parts of leucine, 15 parts of lysine, 25 parts of serine and 0.1 part of galacturonic acid into the formaldehyde solution, stir slowly for 30 minutes, and collect the supernatant after centrifugation;

[0037] (2) Warm up the supernatant to 40°C, slowly add 30 parts of animal gelatin, and stir at 150 rpm for 3 hours at 65°C;

[0038] (3) Add 2 parts of composite sulfate chloride salt PBT (the mass ratio of polyaluminum chloride sulfate (PACS) and polyaluminum ferric chloride sulfate (PAFCS) is 5:1), stir evenly until completely dissolved, then cool to room temperature, Natural crystallization to obtain flocculant crude product;

[0039] (4) After the crude product is washed and purified with methanol, it is vacuum-dried to obtain a composite biological flocculant.

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Abstract

The invention discloses an efficient composite biological flocculant for sludge treatment and a preparation method thereof. The efficient composite biological flocculant for sludge treatment comprises, by mass, 10-70 parts of polymerized amino acid, 10-50 parts of animal gelatin, 0.1-20 parts of uronic acid and 0.1-10 parts of composite sulphate chloride PBT. The flocculant is a net-shaped mixturecontaining organic and inorganic high-molecular compounds at the same time. The flocculant and colloidal particles in water form compact and uniform floc through charge neutralization, adsorption, bridging and sweeping. The flocculant has the advantages of being good in product stability, small in use amount, good in flocculation effect, high in treatment efficiency, small in sludge generation amount and the like, is more environmentally friendly compared with polyacrylamide, and can be widely applied to treatment of sewage and wastewater.

Description

technical field [0001] The invention relates to the field of sewage sludge treatment, in particular to a high-efficiency composite biological flocculant for sludge treatment and a preparation method thereof. Background technique [0002] With the rapid development of industry and the rapid increase of population, the demand for urban drinking surface water and the discharge of industrial wastewater, urban domestic sewage, and aquaculture wastewater are increasing day by day. Due to the increasing types of sewage discharge and the composition of pollutants in water becoming more and more complex, it is becoming more and more difficult to treat sewage. If not handled properly, it will pose a serious threat to industrial and agricultural production and human health. The Ministry of Housing and Urban-Rural Development clearly pointed out that increasing the intensity of sludge treatment and disposal has become the focus of the next step. The goal is that by the end of 2020, the...

Claims

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Application Information

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IPC IPC(8): C02F11/14
CPCC02F11/14
Inventor 张琪张学瑞
Owner 青岛博尔优生物科技有限公司
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