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High solid thermophilic anaerobic digester, thermophilic anaerobic digesting method and system for sludge

A technology for anaerobic digestion and digestion of sludge, which is applied in anaerobic digestion treatment, chemical instruments and methods, biochemical equipment and methods, etc. The effect of lower net material requirements, lower operating costs, and less downtime

Inactive Publication Date: 2009-04-29
IUT GLOBAL PTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not economical to use purified methane to heat raw sludge because the operating costs of the scrubber are higher and the purified methane can be sold

Method used

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  • High solid thermophilic anaerobic digester, thermophilic anaerobic digesting method and system for sludge
  • High solid thermophilic anaerobic digester, thermophilic anaerobic digesting method and system for sludge
  • High solid thermophilic anaerobic digester, thermophilic anaerobic digesting method and system for sludge

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Embodiment Construction

[0052] figure 1 Shown is a first embodiment of the device according to the invention. In this embodiment, the apparatus 100 includes a digestion tank 102 having an upper area marked by arrow 104 and a lower area marked by arrow 105 . Inside the digestion tank 102 is provided a reaction chamber 107 in which anaerobic digestion of the sludge takes place. Raw sludge stream 109 is introduced into the digester through inlet 112 at lower zone 105 and exits the digester through outlet 114 . A portion of the matured sludge is discharged through discharge stream 116 , while the remaining portion of the matured sludge is recycled through recycle stream 118 . Recycle stream 118 is mixed with raw sludge stream 119 at inlet 112 to mix mature sludge with raw sludge (hereinafter referred to as mixed sludge). This provides the anaerobic bacteria required for raw sludge digestion. The mixed sludge enters the digestion tank 102 through the inlet 112 . The inlet 112 is connected to a transf...

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Abstract

A device for digesting sludge anaerobically, comprising a digesting tank (100) having an upper region (104) and a lower region (105), and a reaction chamber (107) for converting raw sludge into matured sludge, an inlet (112) for introducing sludge (109) into the digesting tank, at least one transfer pipe (120) for channelling sludge from the lower region of the digesting tank to the upper region of the digesting tank, said at least one transfer pipe being arranged within the digesting tank and having at least a part of its length thereof arranged within the reaction chamber so that at least one transfer pipe is in contact with sludge moving through the reaction chamber, thereby resulting in heat transfer from sludge moving in at least on transfer pipe to sludge in the reaction chamber, and an outlet (114); arranged at the lower region of the digesting tank for discharging matured sludge (116) from the digesting tank.

Description

technical field [0001] The invention relates to the field of waste treatment, in particular to a device, method and system for anaerobic digestion of organic sludge. Background technique [0002] Anaerobic digestion is commonly used to treat organic waste. Many types of organic waste can be processed through anaerobic digestion, including agricultural, household and industrial waste. The main purpose of performing waste digestion is to convert solid sludge into clean fluid waste suitable for discharge into the environment. The product methane, a flammable fuel, as a by-product of the anaerobic digestion process, is also an important aspect of the operation of anaerobic digestion equipment, which helps to reduce the operating costs of the equipment. Due to the large volumes of organic waste produced by industry, commerce and urban agriculture, treating organic waste through anaerobic digestion is an economical method of disposing / processing and recycling waste. [0003] An...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/04C02F3/28
CPCC12M21/04Y02E50/343C02F11/04C12M29/18C02F3/2873C12M41/12Y02E50/30Y02W10/10Y02W10/20
Inventor 雷恩哈德·格什尔邱德福
Owner IUT GLOBAL PTE
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