Sludge treating system

A sludge treatment and sludge technology, applied in sludge treatment, biological sludge treatment, water/sludge/sewage treatment, etc., can solve problems such as mesh blockage and heat exchange efficiency reduction, achieve effective heat treatment, and simple structure , not easy to reduce the effect of heat exchange efficiency

Inactive Publication Date: 2010-09-15
KK TOSHIBA
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  • Abstract
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  • Application Information

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Problems solved by technology

Therefore, if the coagulum of sludge protein and hydrates such as calcium carbonate adhere to the heat transfer surface, t

Method used

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  • Sludge treating system
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Examples

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Example Embodiment

[0037] Hereinafter, an embodiment of the sludge treatment system of the present invention will be described in detail with reference to the drawings.

[0038] figure 1 It is a block diagram showing the structure of this embodiment. figure 1 The shown sludge treatment system has a thickener 12 that thickens the sludge 11 containing a lot of organic matter to be treated, a preheating device 13 for the thickened sludge, and the sludge that has been preheated under a predetermined pressure. Heated and heat-treated reactor 14.

[0039] For example, as shown in Japanese Patent Application Laid-Open No. 2007-21300, the preheating device 13 has a direct heat exchanger unit 15 arranged in the upper part of a common container and an evaporator unit 16 arranged in the lower part to integrate them to evaporate the lower part. The high-temperature steam generated by the heat exchanger unit 16 directly contacts the sludge introduced into the direct heat exchanger unit 15 at the upper portion, an...

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Abstract

Sludge can be effectively heat-treated with neither the drop of heat-treatment efficiency due to the adhesion of a sludge component to a heat transfer face nor the clogging of a passage with the sludge. The sludge is subjected to a heat-treatment by heating it by a reactor (14) under a predetermined pressure. Before this heat-treatment by the reactor (14), the sludge is preheated by a preheating device (13). This preheating device (13) is constituted by integrating a direct heat exchanger portion (15) connected to a feed passage of the sludge to the reactor (14) and an evaporator portion (16) connected to a discharge passage of the heat-treated sludge from the reactor (14). These portions are held therein at a pressure lower than that in the reactor (14). The sludge, which is introduced into the direct heat exchanger portion (15) but before heat-treated, is preheated by making direct contact with the steam which is produced from the heat-treated sludge introduced from the discharge passage into the evaporator portion (16).

Description

technical field [0001] The present invention relates to a sludge treatment system for thermally treating sludge containing many organic substances to achieve volume reduction. Background technique [0002] In recent years, the treatment method of performing anaerobic fermentation of sludge containing many organic substances through the action of anaerobic microorganisms such as methanogens and recovering digested gas has been widely used. In this case, since the target of anaerobic microorganisms is mainly relatively low-molecular organic matter, if it is necessary to treat refractory organic sludge such as excess sludge produced by sewage treatment through anaerobic treatment, Then, it takes time to dissolve the sludge, leading to enlargement of the apparatus and deterioration of treatment efficiency. [0003] Therefore, when treating refractory organic sludge such as excess sludge, a solubilization treatment is performed in advance, and a method of efficiently performing ...

Claims

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Application Information

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IPC IPC(8): C02F11/18C02F11/04C02F11/12
CPCC02F11/12Y02E50/343F23G7/001F23G2900/50208C02F11/18C02F11/04Y02E50/30Y02W10/20C02F11/13C02F2209/02
Inventor 小原卓巳足利伸行原口智早见德介山本胜也田村博
Owner KK TOSHIBA
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