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Solid bio-enzyme sludge dehydrant and preparation method thereof

A technology of sludge dehydrating agent and biological enzyme, which is applied in the direction of biological sludge treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problems of high labor intensity of field operators, low ecological utilization rate of dewatered sludge, and environmental air pollution and other problems, to achieve good dehydration effect, significant disposal effect, and high biological activity

Inactive Publication Date: 2018-06-08
福州晨翔环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the water content of sludge, the methods commonly used at present mainly add strong acid strong reduction chemical additives, such as ferric chloride, lime and other additives to solve the problem of sludge dehydration rate, but these methods have the following obvious defects: A. Adding a large amount will increase the processing cost
Due to the low ecological utilization rate of dewatered sludge after adding chemical agents, most of the follow-up disposal is incineration, which not only costs high but also causes environmental air pollution risks
D. The corrosion of the equipment in the sludge dehydration production process reduces the service life of the equipment and increases the production cost. At the same time, the labor intensity of the on-site operators is high and the working conditions are poor

Method used

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  • Solid bio-enzyme sludge dehydrant and preparation method thereof
  • Solid bio-enzyme sludge dehydrant and preparation method thereof
  • Solid bio-enzyme sludge dehydrant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A solid biological enzyme sludge dewatering agent, the raw material composition of the dehydrating agent is calculated by mass percentage: 8% pectinase, 13% protease, 13% lipase, 12% cellulase, 8% catalase , amylase 1%, lysozyme 5%, calcium chloride 5% and solid filler 35%; The raw material of described solid filler comprises diatomite, ceramic powder, bentonite powder and building brick lower angle powder.

[0038] The preparation method of solid biological enzyme sludge dewatering agent as above specifically comprises the following steps:

[0039] (1) Preparation of compound biological enzymes: Weigh the liquid enzymes of pectinase, protease, lipase, cellulase, catalase, amylase and lysozyme according to their proportions, and put them into the tank for mixing and compounding. Mix evenly at a stirring speed of 40 rev / min, and then pass through an ultrafiltration membrane with a membrane pore size of 0.005µm under a working pressure of 0.1Mpa to perform concentration a...

Embodiment 2

[0044] A solid biological enzyme sludge dewatering agent, the raw material composition of the dehydrating agent is calculated by mass percentage: 7% pectinase, 14% protease, 15% lipase, 12% cellulase, 7% catalase , amylase 6%, lysozyme 2%, magnesium chloride 8% and solid filling material 29%; The raw material of described solid filling material comprises diatomite, ceramic powder, bentonite powder and building brick lower angle powder.

[0045] The preparation method of solid biological enzyme sludge dewatering agent as above specifically comprises the following steps:

[0046] (1) Preparation of compound biological enzymes: Weigh the liquid enzymes of pectinase, protease, lipase, cellulase, catalase, amylase and lysozyme according to their proportions, and put them into the tank for mixing and compounding. Mix evenly at a stirring speed of 50 rev / min, and then pass through an ultrafiltration membrane with a membrane pore size of 0.015µm under a working pressure of 0.5Mpa to p...

Embodiment 3

[0051] A solid biological enzyme sludge dewatering agent, the raw material composition of the dehydrating agent is calculated by mass percentage: 5% pectinase, 13% protease, 15% lipase, 12% cellulase, 5% catalase , 6% amylase, 4% lysozyme, 7% calcium chloride, 2% magnesium chloride and 31% solid filler.

[0052] The raw materials of the solid filler include diatomite, ceramic powder, bentonite powder and building brick bottom corner powder.

[0053] The preparation method of solid biological enzyme sludge dewatering agent as above specifically comprises the following steps:

[0054] (1) Preparation of compound biological enzymes: Weigh the liquid enzymes of pectinase, protease, lipase, cellulase, catalase, amylase and lysozyme according to their proportions, and put them into the tank for mixing and compounding. Mix evenly at a stirring speed of 45 rev / min, and then pass through an ultrafiltration membrane with a membrane pore size of 0.01µm under a working pressure of 0.3Mpa...

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Abstract

The invention discloses a solid bio-enzyme sludge dehydrant and a preparation method thereof and belongs to the technical field of sludge dehydration. The solid bio-enzyme sludge dehydrant comprises the following raw materials by mass percent: 5-15% of pectinase, 5-16% of protease, 8-15% of lipase, 8-13% of cellulase, 5-8% of catalase, 1-9% of amylase, 2-6% of lysozyme, 4-13% of a coagulant aid and 20-35% of a solid filling material, wherein the total mass percent of the raw materials is 100%. The prepared solid bio-enzyme sludge dehydrant can greatly dehydrate sludge and greatly lower the running cost of sludge dehydration treatment, and the treated sludge can be directly used for composting, agricultural soil and back-filling or such treatment and disposal modes as incineration accordingto actual characteristics of different regions, and therefore, has a good popularization prospect.

Description

technical field [0001] The invention belongs to the technical field of sludge dewatering, and in particular relates to a solid biological enzyme sludge dewatering agent and a preparation method thereof. Background technique [0002] Sludge is an accompanying organism of sewage treatment, usually accounting for 0.5-1% of the total sewage. Due to its complex composition, it contains a large amount of organic matter, harmful heavy metals, pathogenic microorganisms, etc., and the cost of treatment and disposal is high, and the risk of stacking is high. . Therefore, how to safely, economically and rationally dispose and utilize sludge from sewage treatment plants has always been a research topic of great concern to countries all over the world. [0003] According to the estimates of the environmental protection department, the country produces about 30 million tons of sludge with a moisture content of 80% every year, and the amount increases by 15% every year. Sludge contains a...

Claims

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Application Information

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IPC IPC(8): C02F11/14C02F11/02
CPCC02F11/02C02F11/14
Inventor 孙祥章齐爱玖郑依键林祥进叶小武孙靖远
Owner 福州晨翔环保工程有限公司
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