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Sludge biological drying method

A technology of biological drying and sludge, applied in sludge treatment, biological sludge treatment, dewatering/drying/concentrating sludge treatment, etc., can solve the problems of high cost, wide area and high energy consumption of sludge drying , to achieve the effect of simple process, good ventilation and improved drying effect

Inactive Publication Date: 2015-11-04
霍普科技(天津)股份有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In view of the above-mentioned problems, the purpose of the present invention is to solve the problems of high energy consumption, large land occupation and high cost of existing sludge drying, and to provide a mud biological drying system with strong operability, good dehydration performance and high drying efficiency. method

Method used

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Embodiment Construction

[0023] The present invention will be specifically introduced below in conjunction with specific embodiments.

[0024] A sludge biological drying method is characterized in that: comprising the following steps:

[0025] (1) Removal of impurities and homogenization: Take the sludge and stir it evenly until it becomes muddy, and remove the impurities in the sludge;

[0026] (2) Acidolysis treatment of sludge: add acidolysis agent to sludge for acidolysis treatment, the mass ratio of acidolysis agent to sludge is 1:3-5; then filter to remove the impurities of acidolysis treatment; The acidolysis agent is a hydrochloric acid solution with a mass percentage of 20-40%, and the acidolysis time is controlled for 5-10 hours;

[0027] (3) Conditioning surface-active substances: add surfactant in the sludge after acidolysis treatment, fully stir, described surfactant is foam concrete foaming agent; The mass ratio of surfactant and sludge is 1: 20~50;

[0028] (4) Add filler: add filler...

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Abstract

The invention provides a sludge biological drying method, which comprises the following steps: 1)removing impurity and homogenizing; 2)performing acidolysis treatment on sludge; 3)conditioning surface active substance; 4)adding a filler: adding the filler crude wood chip in the processed sludge and fully stirring; and 5)adding a composite microbe preparation: adding a composite microbe preparation in processed sludge, wherein the composite microbe preparation is prepared by carbon source and composite microbe inocula according to mass part of 2: 1. An employed ventilation mode is intermittence ventilation by a blower, under condition of certain ventilation quantity, ventilation rate is adjusted from large rate to small rate, and the moisture clearance of the material is increased by 3%. drying method is carried out on the sludge by employing an addition method of an acidulate agent and microbe, fiber component and protein component in sludge can be partially hydrolyzed to nutrition component which can be rapidly used by thalline, drying efficiency is increased, and drying effect is improved.

Description

technical field [0001] The invention relates to the field of environmental protection sludge treatment, in particular to a method for biological drying of sludge. Background technique [0002] With the deepening of urbanization, the amount of urban sewage discharge is increasing, which requires a large number of sewage treatment plants for sewage treatment. However, the construction and operation of the sewage plant will produce a large amount of excess sludge, which accounts for about 0.3% to 0.5% of the treated water (calculated as water content of 97%). If advanced treatment is carried out, the amount of sludge will increase by 0.5 to 1.0% times, the form of sludge treatment is very severe. Sludge resource utilization is the future development trend. [0003] The common technical routes for sludge treatment and disposal in my country include landfill, composting, and incineration. Sludge usually needs to be transported for a long distance before entering these treatment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12C02F11/14C02F11/02
CPCY02W10/20
Inventor 孙浩
Owner 霍普科技(天津)股份有限公司
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