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Comprehensive utilization apparatus for urban domestic sewage sludge, and treatment process

A technology for urban domestic sewage and sludge, which is applied in biological sludge treatment, dewatering/drying/concentrated sludge treatment, sewage/sludge fertilizer, etc. To achieve the effect of facilitating compost maturity and shortening the cycle

Pending Publication Date: 2019-11-05
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional composting method is to use the heat generated by the sludge itself to cultivate aerobic mesophilic bacteria and thermophilic bacteria to decompose the organic matter in the sludge, but because the process cycle is too long, it cannot meet the current fast pace of life
In addition, the traditional composting method is not suitable for cities because it is rich in more complex bacteria, parasite eggs and viruses, which will produce a foul smell during the composting process.

Method used

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  • Comprehensive utilization apparatus for urban domestic sewage sludge, and treatment process
  • Comprehensive utilization apparatus for urban domestic sewage sludge, and treatment process
  • Comprehensive utilization apparatus for urban domestic sewage sludge, and treatment process

Examples

Experimental program
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Embodiment 1

[0033] Embodiment 1: as figure 1 , 2 A comprehensive utilization device for municipal domestic sewage sludge is shown, including a housing 1 for protection, a feeding device 2 for feeding, a first treatment device 3 for heat treatment, and a second treatment device for electromagnetic wave treatment. Two processing devices 4, a first conveying device 5 for circulation, and a second conveying device for discharging;

[0034] The first processing device 3 includes a first processing housing 31 and a heating device 32; the first processing housing 31 includes a material delivery housing 312 and a heating housing 313, and the heating housing 313 is wrapped around the outer end of the material delivery housing 312, and A heating chamber is formed between the heating housing 313 and the material delivery housing 312. The heating device 32 adopts a crawler heater. In close contact; and the inside of the transport housing 312 is inclined;

[0035] The second processing device 4 com...

Embodiment 2

[0046] Embodiment 2: Different from Embodiment 1: as Figure 4 , 5 As shown, the inside of the first processing housing 31 is provided with a hollow screw shaft 311, and the outer end of the first processing housing 31 is provided with a motor, which provides power for the hollow screw shaft 311; the second conveying device adopts a conveyor belt feeding device, one end of which is It is connected to the discharge end of the pulverizing device 42 through a connecting pipe, and the other end is located at the opening of the casing 1; the upper end of the second conveying device is provided with a spraying device 7 .

[0047] Utilize the device of the present embodiment to process the technology of urban domestic sewage sludge, comprise the following steps:

[0048] Step 1: Impurity removal, heat treatment, electromagnetic wave irradiation treatment

[0049] The sludge is transported into the device through the feeding device 2, and the stones and other sundries mixed in the s...

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Abstract

The invention discloses a comprehensive utilization apparatus for urban domestic sewage sludge, and a treatment process. The apparatus comprises a shell for protection, a feeding device for feeding, afirst treatment device for heat treatment, a second treatment device for electromagnetic wave treatment, a first conveying device for circulation, and a second conveying device for discharging. The method comprises: impurity removal; heat treatment; electromagnetic wave irradiation treatment; addition of active material; composting storage; and reuse. With the apparatus and the process of the present invention, the whole composting period can be substantially shortened while the problem of the generation of malodorous gas during composting can be avoided. The apparatus and the process of thepresent invention are suitable for mass promotion in cities.

Description

technical field [0001] The invention relates to the technical field of sludge reuse, in particular to a comprehensive utilization device and treatment process for urban domestic sewage sludge. Background technique [0002] Sludge contains a large amount of organic matter and rich nitrogen, phosphorus and other nutrients. Arbitrary discharge into the water body will consume a large amount of oxygen in the water body, resulting in deterioration of the water quality and seriously affecting the survival of aquatic organisms. In addition, there are a variety of toxic substances, heavy metals, pathogenic bacteria, parasite eggs and other harmful substances in the sludge. Improper treatment will spread diseases, pollute the soil and crops, and pass them on to humans through the biological chain. Therefore, if the sludge is discharged and stacked arbitrarily without proper treatment, it will definitely cause serious pollution to the surrounding environment, so that the established s...

Claims

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Application Information

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IPC IPC(8): C02F11/13C02F11/15C02F11/02C05F15/00C05F17/00
CPCC02F11/02C05F7/00C05F17/00C02F11/13C02F11/15C05F11/08Y02W30/40
Inventor 陈琛张恒军汪元南蔡素燕杜玲罗海林黄珊王敏
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP