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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the coagulum of sludge protein and hydrates such as calcium carbonate adhere to the heat transfer surface, the heat exchange efficiency will decrease.
In addition, there is also concern about clogging of the flow path due to sludge

Method used

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Embodiment Construction

[0037] Hereinafter, one Embodiment of the sludge processing system of this invention is demonstrated in detail using drawing.

[0038] figure 1 is a block diagram showing the structure of this embodiment. figure 1 The sludge treatment system shown has a concentrator 12 for concentrating sludge 11 containing many organic substances to be treated, a preheating device 13 for the concentrated sludge, and preheating the preheated sludge under a predetermined pressure. Reactor 14 for heating and heat treatment.

[0039] The preheating device 13 is, for example, as shown in Japanese Patent Application Laid-Open No. 2007-21300, in which a direct heat exchanger unit 15 is arranged on the upper part of a common container, and an evaporator unit 16 is arranged on the lower part to integrate them, so that the evaporation at the lower part The high-temperature steam generated in the tank part 16 directly contacts and warms the sludge introduced into the upper direct heat exchanger part 1...

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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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