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A dry sludge screening and discharging system and method for external transportation

A sludge and drying technology, applied in dehydration/drying/concentrated sludge treatment, sludge treatment, chemical instruments and methods, etc., can solve problems such as high water content, soil and groundwater environmental pollution, and sludge cannot be dried , to achieve a high degree of automation, optimize the overall urban environment, and eliminate environmental risks

Inactive Publication Date: 2019-05-10
SUZHOU LVDI SOIL REMEDIATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As time goes by, the amount of sludge piled up continues to increase. During the process of containment, shoveling, and ditch filling, the debris in the sludge also increases. Construction waste, plant waste, and domestic waste are all mixed in. Disposal is difficult; at the same time, the nature of the sludge determines that it cannot be dried, and the moisture content of long-term storage is still high (the average moisture content after testing is 81.48%), showing a swampy shape, some jelly blocks, low bearing capacity, and high difficulty in construction
[0003] The long-term random stacking of sludge occupies a large amount of land and reduces the utilization efficiency of land resources; it emits foul-smelling gas and affects the living environment of surrounding residents; at the same time, sludge stacking produces Leachate will pollute the soil and groundwater environment

Method used

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  • A dry sludge screening and discharging system and method for external transportation
  • A dry sludge screening and discharging system and method for external transportation
  • A dry sludge screening and discharging system and method for external transportation

Examples

Experimental program
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Embodiment 1

[0039] Such as Figure 4 As shown, a set of sludge feeding and screening system is set up in a closed factory building. The roof of the closed factory building is a transparent lighting board. The vehicle unloading area adopts a double-layer door design. The factory building is designed with a slight negative pressure and is equipped with exhaust gas treatment equipment. Ensure that the gas in the plant will not leak out and affect the surrounding environment when the sludge is dehydrated and dried. The sludge feeding system includes: a sludge feeding hopper 1, a flapper valve 2, a chain conveyor 3, a vibrating screen 4, and a scraper conveyor 8; the sludge feeding hopper is a The steel silo is used to receive the sludge dumped by the transport vehicle; the flapper valve is an electric gate valve. The sludge feeding system also includes: a sieve feeding belt conveyor 7 and a hopper 9; the belt conveyor 7 and hopper 9 cooperate with the electric vibrating screen 4, and the slu...

Embodiment 2

[0051] Embodiment 2, the sludge dehydration and drying treatment system as described in Embodiment 1, compared with Embodiment 1, Embodiment 2 is also equipped with tail gas treatment equipment to ensure that the gas in the plant will not leak out when the sludge is dehydrated and dried. Surroundings. The tail gas treatment equipment includes: gas collection pipes, fans, spray scrubbers, and low-temperature plasma gas purification devices arranged in the top space of the factory building.

[0052] After testing, the waste gas components generated during the sludge dehydration and drying process include: malodorous, ammonia, hydrogen sulfide, non-methane total hydrocarbons, water vapor, etc.

[0053] The gas collection pipes arranged in the top space of the factory building are composed of four main collection pipes. Branch pipes are designed on the main pipes, and suction ports are designed at the end of the branch pipes to achieve uniform collection of exhaust gas in the fact...

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Abstract

The invention belongs to the field of sludge treatment, and particularly relates to a dry sludge screening discharge system and an outward transport method.The dry sludge screening discharge system comprises a dry sludge screening grinding system and a dry sludge discharge system.The dry sludge screening discharge system is high in degree of automation, the steps of screening, grinding, distributing and conveying and the like of dry sludge are completed integratively, the production conditions of the steps can be accurately regulated and controlled, and safety and reliability are achieved.According to the dry sludge screening discharge system and the outward transport method, the main technology steps are conducted in a closed plant, tail gas treatment equipment is arranged in a matched mode, and therefore friendliness to surrounding environment is achieved.

Description

[0001] The invention belongs to the field of sludge treatment, and in particular relates to a drying sludge screening and discharging system and a method for external transportation. Background technique [0002] The construction of sewage treatment plants in large and medium-sized cities in China was earlier. Since there was no mature and feasible sludge treatment technology in China at that time, the sludge generated by sewage treatment plants was temporarily piled up on the reserved land. As time goes by, the amount of sludge piled up continues to increase. During the process of containment, shoveling, and ditch filling, the debris in the sludge also increases. Construction waste, plant waste, and domestic waste are all mixed in. Disposal is difficult; at the same time, the nature of the sludge determines that it cannot be dried, and the moisture content of long-term storage is still high (the average moisture content after testing is 81.48%), showing a swampy shape, some je...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/121C02F11/145
CPCC02F11/12C02F11/14C02F2303/06
Inventor 李兴
Owner SUZHOU LVDI SOIL REMEDIATION TECH CO LTD