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Processing technology for converting mud into fertilizer

A treatment process and transformed technology, applied in the field of environment and resource utilization, can solve the problems of waste of resources, occupation of land resources, secondary pollution, etc., and achieve the effects of promoting the development of plant roots, reducing manufacturing costs, and reducing pollution.

Inactive Publication Date: 2006-11-08
MINXING ENVIRONMENT ENG SERVICE XIAMEN
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Problems solved by technology

[0002] A large amount of sludge left over from urban sewage purification treatment contains both certain nutritional elements and many harmful components. The wanton stacking not only occupies a large amount of limited land resources, but also easily causes secondary pollution, and at the same time causes a large amount of waste of resources
[0003] Internationally, sludge disposal methods mainly include incineration, sanitary landfill, throwing into the sea, and agricultural utilization, as well as refining mineral oil or briquette binders. However, due to economic and environmental pressures and resource considerations, ocean throwing has been banned. The landfill occupies a lot of land, the leachate pollutes the groundwater, and other sludge treatment methods cannot make full use of the active ingredients in the sludge

Method used

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  • Processing technology for converting mud into fertilizer

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Embodiment Construction

[0021] Such as figure 1 Shown, be preferred embodiment of the present invention, the step of its specific processing technology is:

[0022] 1. Adjust materials.

[0023] Mix and ferment the organic leavening agent and conditioner with CK-21 aerobic bacteria first to reduce the water content of the organic leavening agent and conditioner, increase the number of bacteria per unit, and avoid too long growth time in the early stage of sludge fermentation. The time for sludge fermentation and maturation is greatly shortened. The organic leavening agent can be crop straw powder, sawdust, rice husk, etc. Adding these dry, light and easy-to-decompose materials can reduce the specific gravity of the entire material, increase the degree of looseness, and increase the contact area with the air. conducive to aerobic fermentation. The conditioner can use fly ash, bentonite and other dry substances to reduce moisture, or according to the resource situation, the leftovers of mushroom cul...

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Abstract

The technological process of converting sludge into fertilizer includes the following steps: 1. regulating material through mixing organic leavening agent and amendment with CK-21aerobic bacteria, dewatering sludge and adding fermented leavening agent and amendment to sludge; 2. compost fermenting to absorb, oxidize and decompose organic matters in sludge with CK-21aerobic bacteria; 3. ageing through natural stacking for secondary fermentation to further decompose, stabilize and drying the residual organic matters in sludge; and 4. producing fertilizer. The process treats sludge into harmless matter to reduce environmental pollution and utilize sludge resource fully in producing organic fertilizer.

Description

technical field [0001] The invention belongs to the technical field of environment and resource utilization, relates to sludge harmless treatment and biological resource utilization, and is related to the treatment process of converting sludge into fertilizer. Background technique [0002] The large amount of sludge left over from urban sewage purification treatment contains both certain nutritional elements and many harmful components. The wanton stacking not only occupies a large amount of limited land resources, but also easily causes secondary pollution, and also causes a lot of waste of resources. [0003] Internationally, sludge disposal methods mainly include incineration, sanitary landfill, throwing into the sea, and agricultural utilization, as well as refining mineral oil or briquette binders. However, due to economic and environmental pressures and resource considerations, ocean throwing has been banned. The landfill occupies a lot of land, the leachate pollutes t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F7/00C02F11/00C05F17/00
CPCY02A40/20Y02W30/40
Inventor 孙山陈森美林国良
Owner MINXING ENVIRONMENT ENG SERVICE XIAMEN
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