Bioflocculant and preparation method thereof

A biological flocculant and product technology, applied in the field of pollution control, can solve problems such as poor decolorization and poor flocculation effect, and achieve the effects of improving transparency, wide applicable temperature range, and maintaining the biosphere

Inactive Publication Date: 2019-08-30
王志伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing biological flocculants have the problems of poor flocculation effect and poor decolorization

Method used

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  • Bioflocculant and preparation method thereof
  • Bioflocculant and preparation method thereof
  • Bioflocculant and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0025] The invention provides a kind of preparation method of biological flocculant, comprising the following steps:

[0026] The activated sludge is subjected to micro-aeration treatment to obtain pretreated activated sludge, and the activated sludge is activated sludge with bacteria micelles in the aeration tank of the biochemical system of the sewage treatment plant;

[0027] Mixing the pretreated activated sludge with bacillus and performing aeration treatment to obtain an aeration product;

[0028] After mixing the aeration product with carbon source, urea and trisodium phosphate, adding auxiliary materials, thickeners, bioactivating enzymes and dry powder anaerobic bacteria in sequence to obtain a semi-colloidal substance;

[0029] The semi-colloidal substance is dried and pulverized to obtain the biological flocculant.

[0030] The present invention has no special limitation on the specific source of the activated sludge.

[0031] In the present invention, the concent...

Embodiment 1

[0046] First, take the activated sludge with bacteria micelles in the aeration tank of the biochemical system of the sewage treatment plant (municipal sewage and industrial sewage) in normal operation. The sludge concentration is controlled at 6000mg / L. Under the micro-aeration state of ℃, the dissolved oxygen is controlled at 2.5mg / L, then add 10 parts of Bacillus and continue aeration for two hours, then add 10 parts of carbon source (glucose), 1 part of urea, 0.1 parts of trisodium phosphate, and continue to control Under the condition of temperature and dissolved oxygen, start the reaction kettle and stir to add 40 parts of auxiliary materials (sodium bentonite), so that the water is absorbed by the auxiliary materials into the porridge, add 5 parts of thickener (anionic polyacrylamide), 5 parts of biological activation Enzyme (catalase), 5 parts of dry powder anaerobic bacteria, continue to stir for 1 hour, take out the semi-colloidal substance with a moisture content of l...

Embodiment 2

[0056] First, take the activated sludge with bacteria micelles in the aeration tank of the biochemical system of the sewage treatment plant (municipal sewage and industrial sewage) in normal operation. The sludge concentration is controlled at 6000-8000mg / L. After taking out 20 parts of water-containing activated sludge, Under the micro-aeration state at 25°C, the dissolved oxygen is controlled at 3.5mg / L, then add 10 parts of Bacillus and continue aeration for two hours, then add 10 parts of carbon source (sodium acetate), 0.02 part of urea, 0.01 part of trisodium phosphate , continue to control the temperature, under the condition of dissolved oxygen, start the reactor and stir to add 50 parts of auxiliary materials (starch), so that the water is absorbed by the auxiliary materials into the porridge, add 5 parts of thickener (non-ionic polyacrylamide), 10 parts Biologically activated enzyme (amylase), 10 parts of dry powder anaerobic bacteria, continue to stir for 0.5 hours, ...

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Abstract

The invention provides a bioflocculant and a preparation method thereof, and belongs to the technical field of pollution treatment. The preparation method of the bioflocculant comprises the followingsteps: performing micro-aeration treatment on activated sludge to obtain pre-treated activated sludge, wherein the activated sludge is activated sludge with bacterial micelles in an aeration tank of abiochemical system of a sewage treatment plant; mixing the pretreated activated sludge with Bacillus and then performing aeration treatment to obtain an aeration product; mixing the aeration productwith a carbon source, urea and trisodium phosphate, and then sequentially adding an auxiliary material, a thickener, a biological activating enzyme and dry powder anaerobic bacteria to obtain a semi-colloidal substance; and drying the semi-colloidal substance and then performing crushing to obtain the bioflocculant.

Description

technical field [0001] The invention relates to the technical field of pollution control, in particular to a biological flocculant and a preparation method thereof. Background technique [0002] Bioflocculant is a kind of special polymer metabolite produced by microorganisms that can coagulate and precipitate solid suspended particles that are not easy to degrade in liquid. This type of flocculant is a water treatment agent with high efficiency, low cost, non-toxicity and no secondary pollution, and can be widely used in drinking water treatment, waste water treatment, food industry and fermentation industry and other fields. Bioflocculant is a typical environment-friendly functional material, which adapts to the concept of contemporary sustainable development and has very important practical significance for human health and environmental protection. [0003] The existing biological flocculants have the problems of poor flocculation effect and poor decolorization. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F103/30
CPCC02F3/34C02F3/342C02F2103/30C02F2209/06C02F2209/08C02F2209/11C02F2209/14
Inventor 王志伟
Owner 王志伟
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