Sludge Improvement Method of Sewage Treatment Plant
A sewage treatment plant and sludge technology, which is applied in the field of sewage treatment plant sludge improvement, can solve the problems of environmental secondary pollution, etc., achieve the effects of low investment and production costs, simple operation, and avoid secondary pollution
Inactive Publication Date: 2011-11-30
吕铁军
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Problems solved by technology
The current sludge has hardly undergone any biological treatment, and is basically discarded and piled up after dehydration. This method can easily cause secondary pollution to the environment
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[0012] The present invention will be further described below in conjunction with embodiment:
[0013] The method for the improvement of sewage treatment plant sludge comprises the following steps:
[0014] (1), sludge is added with organic medium and wind-sand soil, the mass ratio of sludge and organic medium and wind-sand soil is: sludge: organic medium: wind-sand soil: 1: 4: 10;
[0015] (2) Ferment the sludge added with organic medium and sandy soil in the greenhouse at 28-30°C for 36 hours, and the temperature reaches 65-70°C. Ferment for 36 hours when the raw material reaches 70-80°C; this process can completely kill harmful pathogenic bacteria and insect eggs. In the fermentation tank, the compost turning machine is used to turn the compost to adjust the air, moisture and temperature required for the fermentation process to the best state, thereby promoting fermentation.
[0016] (3), in the sludge after above-mentioned fermentation, add organic medium, the mass ratio ...
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The invention relates to a method for improving sludge in a sewage treatment plant. The method comprises the following steps: (1) adding the sludge to the organic medium and the aeolian soil, the mass ratio of the sludge to the organic medium and the aeolian soil is: sludge: organic medium: aeolian soil: 1: 4: 10; (2) Ferment the sludge with organic medium and wind-blown soil in the greenhouse at 28-30°C for 36 hours, and the fermented material is sent to a long-type fermentation tank, and the material in the long-type fermentation tank is fermented for 36 hours when it reaches 70-80°C (3) add organic medium in the above-mentioned fermented sludge, the mass ratio of sludge and organic medium is 1: 4, and the sludge is decomposed after 36 hours of fermentation; (4) the sludge after decomposing is added into aeolian soil to ferment , that is, to obtain garden planting soil, the mass ratio of sludge to wind-sand soil is 1:10. The improved sludge meets the standards of planting soil, and at the same time reduces the secondary pollution of sludge, protects the environment, and reduces the degree of damage to cultivated land.
Description
Technical field: [0001] The invention relates to a sludge treatment method, in particular to a sewage treatment plant sludge improvement method. Background technique: [0002] At present, with the improvement of people's quality of life, the green area is getting larger and larger, and the phenomenon of stealing farmland and forest black soil for greening soil occurs from time to time, causing greater damage to the environment. In addition, the demand for high-quality soil for agricultural seedling breeding, wasteland, and improvement is also increasing day by day. [0003] In addition, with the development of the economy, the improvement of people's living standards, and the rapid growth of the urban population, the amount of urban garbage and domestic sewage generated every day is increasing. If all domestic sewage is treated, a large amount of domestic sewage sludge will be produced. The current sludge has hardly undergone any biological treatment, and is basically disc...
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IPC IPC(8): C02F11/04
Inventor 吕铁军朱晓琳徐佐权于锐
Owner 吕铁军