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Sludge dewatering and drying treatment system and method

A drying treatment and sludge dewatering technology, applied in water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, special treatment targets, etc. Effect

Active Publication Date: 2016-06-15
SUZHOU NIBAO ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the inventor found in practice that to treat the sludge produced by domestic sewage plants, it is first necessary to consider whether the treatment system and treatment process will affect the surrounding environment. processing cost

Method used

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  • Sludge dewatering and drying treatment system and method
  • Sludge dewatering and drying treatment system and method
  • Sludge dewatering and drying treatment system and method

Examples

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Embodiment 1

[0037] 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 gate 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 slud...

Embodiment 2

[0049] 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 exhaust gas treatment equipment includes: gas collection pipes, fans, spray scrubbers, and low-temperature plasma gas purification devices arranged in the top space of the plant.

[0050] 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.

[0051] 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 factor...

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Abstract

The invention belongs to the field of sludge treatment and particularly relates to a system and method for treating the sludge from a domestic sewage plant. The sludge dewatering and drying treatment system comprises a sludge feed screening system, a sludge dosing drying system, a dry sludge screening and grinding system and a dry sludge transport system. According to the sludge dewatering and drying treatment system provided by the invention, the automation degree is high, the links such as dosing, stirring and conveying are integrally finished, and the production conditions of each link can be accurately controlled, thereby being safe and reliable; and moreover, main technological links are implemented in a closed plant, supporting tail gas treatment equipment is provided, and thus the system is friendly to the surrounding environment.

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 Applications(China)
IPC IPC(8): C02F11/12C02F11/14
CPCC02F11/12C02F11/14C02F2303/06
Inventor 李兴
Owner SUZHOU NIBAO ENVIRONMENT TECH
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