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Sludge reduction treatment system and method

A sludge reduction and treatment system technology, applied in the field of pollutant treatment, can solve the problems of large floor area, secondary pollution, high cost, etc., and achieve the effects of low cost, reduced moisture content, and simple equipment

Pending Publication Date: 2020-02-18
GUANGDONG YEANOVO ENVIRONMENTAL PROTECTION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of method usually requires large investment, high cost, occupies a large area, and produces a large amount of waste water
In addition, if the sludge contains heavy metals or other toxic substances, other more toxic substances (including dioxins, polycyclic aromatic hydrocarbons, etc.) will be generated during the high-temperature treatment process, causing serious secondary pollution

Method used

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  • Sludge reduction treatment system and method

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Embodiment 1

[0048] The method for the sludge reduction treatment of the present embodiment comprises the following steps:

[0049] (1) m tons of raw sludge with a moisture content of 80% is transported to the pulping system for pulping treatment to obtain wet sludge with a moisture content of 90%;

[0050] (2) Transport the wet sludge to the plate and frame filter press, dehydrate and press it into a mud cake, separate and obtain m tons of pulping wastewater and mud cake with a water content of 60%, m tons of pulping wastewater, and its water quality The indicators are shown in Table 1:

[0051] Table 1

[0052] COD (mg / L) BOD 5 (mg / L)

NH 4 -N (mg / L)

SS(mg / L) 400 100 100 200

[0053] The influent standards of the actual sewage plant are shown in Table 2:

[0054] Table 2

[0055] COD (mg / L) BOD 5 (mg / L)

NH 4 -N (mg / L)

SS(mg / L) 300 80 70 120

[0056] Apparently, the water quality of pulping wastewater obviously does...

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Abstract

The invention discloses a sludge reduction treatment system and method. The sludge reduction treatment system comprises a slurry adjustment system, a sludge pressure filtration apparatus, and a sludgedrying system, wherein the sludge pressure filtration apparatus comprises a sludge inlet, a sludge outlet, and a wastewater discharge port, the sludge inlet is connected with the slurry adjustment system, the sludge outlet is connected with the sludge drying system, and the wastewater discharge port communicates with the slurry adjustment system. Compared with the conventional sludge treatment process, the sludge reduction treatment method of the invention does not directly dry original sludge, but the pretreatment process of slurry adjustment and pressure filtration is used to reduce the water content of the sludge, and then the sludge which is completely in a semi-dry state is dried to effectively reduce energy consumption. In addition, the slurry adjustment wastewater is derived from slurry adjustment wastewater which does not reach sewage plant water inlet requirements after pressure filtration, and the slurry adjustment wastewater is adjusted to meet the sewage plant water inletrequirements through multiple slurry adjustment treatment, so that the "treating waste with waste" is realized.

Description

technical field [0001] The invention relates to the technical field of pollutant treatment, in particular to a sludge reduction treatment system and method. Background technique [0002] At present, the treatment of sludge is mainly divided into the following methods: [0003] (1) Landfill method: This method is to bury the sludge underground, thereby reducing the harm to the ground environment. However, this method not only seriously pollutes soil and groundwater, but also seriously occupies limited land resources. At this stage, it has been basically replaced by other methods. [0004] (2) Incineration method: This method is to use sludge as a fuel and put it into a garbage incinerator for incineration to remove it. This method has high reduction efficiency, but it is easy to produce highly toxic dioxins during the incineration process, and the secondary pollution is also relatively serious. [0005] (3) Fermentation method: This method is to transform the organic matt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/122C02F11/13
CPCC02F11/122C02F11/13C02F2303/06
Inventor 韩全张恒
Owner GUANGDONG YEANOVO ENVIRONMENTAL PROTECTION CO LTD
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