Innocuous treatment and utilization method for sludge

A technology of harmless treatment and new method, applied in sludge treatment, biological sludge treatment, chemical instruments and methods, etc., can solve the problems of farmland soil pollution, reducing the total amount of garbage, low fertilizer efficiency, etc., to achieve no secondary Effects of pollution, improvement of ecological environment and ecological quality

Inactive Publication Date: 2007-09-12
浙江威尔斯生物能源开发有限公司
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Problems solved by technology

The landfill treatment method is to landfill the sludge from the sewage treatment plant together with other garbage, which will be remixed and transformed into one or more non-degradable and highly toxic gases and leachate, causing new environmental pollution; composting treatment The method is not only difficult to reduce the total amount of garbage, but also has low fertilizer efficiency, requires careful sorting, long treatment cycle, and incomplete degradation of toxic substa

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  • Innocuous treatment and utilization method for sludge

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Embodiment Construction

[0022] Shown in Fig. 1, be the technological process schematic diagram of the new method of sludge harmless treatment and utilization of the present invention, below the technological process of the present invention is briefly described as follows:

[0023] (1) Put the dehydrated sludge into the mixing tank, add CaO, adjust the pH value to 8-9, and add catalysts and high-efficiency composite microorganisms according to the mass ratio of 1:0.01-0.02:0.01-0.02:1 1. High-concentration organic wastewater is fully stirred and mixed at room temperature to make a sludge mixture and input it into the anaerobic tower;

[0024] (2) The sludge mixture is passed through fermentative bacteria, hydrogen-producing acetogenic bacteria, homoacidogenic bacteria, and using H in the anaerobic tower. 2 and CO 2 The four stages of effective fermentation of methanogenic bacteria or acetic acid-decomposing methanogenic bacteria, the fermentation time of the sludge mixture in the anaerobic tower is ...

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Abstract

This invention discloses a new method for innocuity of mud including the following steps: 1, putting dehydrated mud into a mixing basin to adjust the pH value to 8-9 and mixing them and inputting them to an anaerobic tower, 2, the mud mixture is fermented and separated automatically in the tower, 3, marsh gas is used in burning and generation, 4, the solution is used in fertilizing farms and the part can't be used passes through a SBR biochemical process device and enters into a slant pipe to be deposited and separated in solid and liquid, mud flows back and the water is discharged if meets the standard, 5, the slags are mixed with the mud discharged by the SBR process device and enter into a ferment basin for the second fermentation, 6, material of the fermentation basin is input into a fertilizing process to be dried, cooled, crushed, screened, packaged and get agricultural high efficient organic fertilizer.

Description

technical field [0001] The invention relates to an environmental protection technology, in particular to a new method for harmless treatment and utilization of urban domestic sewage treatment sludge, livestock and poultry slaughterhouse sludge and part of industrial sewage treatment sludge. Background technique [0002] With the rapid development of my country's economy, the problem of sewage and sludge is becoming more and more prominent. If it is not treated or treated properly, the atmosphere, groundwater and soil will be seriously polluted, the land will be occupied by a large amount of garbage, and the natural landscape will be severely damaged. [0003] Sewage treatment will produce a large amount of sediment, including comprehensive solid substances such as mud, sand, fibers, animal and plant residues, flocs, colloids, metal elements, germs, insect eggs, microorganisms, and weed seeds in sewage. Stable, perishable, spoilage, mildew. [0004] At ...

Claims

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Application Information

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IPC IPC(8): C02F11/04C02F11/12C05F7/00C12S13/00B01J29/04C12R1/07C12R1/38C12R1/025C12R1/05C12R1/225C12S99/00
CPCY02E50/343Y02A40/20Y02E50/30Y02W10/20Y02W30/40
Inventor 官平东张勇利
Owner 浙江威尔斯生物能源开发有限公司
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