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Concentrator-integrated screw press

A technology for screw presses and thickening devices, applied in presses, presses using rotating pressure components, dehydration/drying/concentrated sludge treatment, etc., can solve the problem of concentrated sludge retention, dehydration decline, and screw press dehydration Efficiency drop and other issues

Active Publication Date: 2012-02-08
ISHIGAKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the method of storing the concentrated sludge in a storage tank in advance, adding a flocculant to the sludge taken out from it, and performing dehydration after flocculation of the sludge again, the thickening process, flocculation adjustment process, dehydration process due to various reasons When the treatment continuity of each process such as the process cannot be integrated, etc., the thickened sludge may stay in the storage tank for a long time
If the concentrated sludge stays for a long time, there is a problem that the dehydration performance of the concentrated sludge will decrease due to the continuous decay of the concentrated sludge, and the dehydration efficiency of the screw press will decrease.

Method used

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  • Concentrator-integrated screw press

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Comparison scheme
Effect test

no. 1 approach

[0034] figure 2 It is a longitudinal sectional side view of the concentrator-integrated screw press S1 according to the first embodiment of the present invention. Concentrating device-integrated screw press S1 employs a rotary concentrator 5 as the concentrating device 2 of the above-mentioned concentrating-device-integrated screw press S. That is, the concentrating device-integrated screw press S1 includes: a screw press 1 , a rotary concentrator 5 mounted on the screw press 1 , and a discharge unit connected to the rotary concentrator 5 to receive concentrated water discharged from the rotary concentrator 5 . The chute 3 for sludge is vertically arranged at the beginning of the screw press 1 and presses the concentrated sludge received by the chute 3 into the press-in pump 4 of the screw press 1 . The chute 3 is connected to the suction side of the push pump 4 , and the screw press 1 is connected to the discharge side of the push pump 4 .

[0035] image 3 It is a flow c...

no. 2 approach

[0074] Figure 13 It is a longitudinal sectional side view of the concentrator-integrated screw press S2 according to the second embodiment of the present invention. The thickening device-integrated screw press S2 is different from the first embodiment in that the thickening device 2 is not composed of the rotary thickener 5 but is composed of a belt thickener 81 and a thickened sludge storage tank 82 .

[0075] The thickening-device-integrated screw press S2 includes a screw press 1, a belt-type thickener 81 arranged at the front stage of the screw press 1, a concentrated sludge storage tank 82 arranged at the discharge part of the belt-type thickener 81, and a The discharge part of the concentrated sludge storage tank 82 is connected to and accepts the chute 3 of the concentrated sludge discharged from the concentrated sludge storage tank 82, and is vertically arranged at the beginning of the screw press 1 and presses the concentrated sludge received by the chute 3 into the...

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Abstract

A concentrator-integrated screw press which is equipped with: a continuous type concentrator that concentrates sludge continuously and discharges the resulting concentrated sludge and that is equipped with a discharge-leveling unit for leveling the discharge of concentrated sludge per unit time; a positive displacement pump that is connected to the concentrator and that transfers continuously the concentrated sludge discharged from the concentrator; and a screw press that is connected to the discharge side of the positive displacement pump and that presses and squeezes and thus dehydrates the concentrated sludge.

Description

technical field [0001] The present invention relates to a screw press integrated with a thickening device including a thickening device for concentrating sewage, excrement, sewage from residential areas, and sludge generated from waste water treatment facilities such as factories, and a screw press for pressing and dehydrating the concentrated sludge . Background technique [0002] When dewatering sludge with high water content and high fluidity, such as sewage sludge, it is necessary to separate water from the sludge in advance to form concentrated sludge with low fluidity. In particular, when the sludge is squeezed and dewatered by a screw press, usually, the concentrated sludge concentrated by the thickening device is temporarily stored in a storage tank, a flocculant is added to the sludge taken out therefrom, and the sludge is dewatered again. After flocculation, dehydration is performed with a screw press. [0003] Japanese Patent No. 3797551 discloses a rotary thick...

Claims

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Application Information

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IPC IPC(8): C02F11/12B01D29/25B30B3/00B30B9/28C02F11/14
CPCB01D29/35B30B9/163B30B9/18B01D29/6476B01D29/828C02F11/125C02F11/143C02F11/147C02F11/122B01D29/25B30B9/14C02F11/123C02F2201/002Y02W10/20
Inventor 山下学宫胁将温片山雅义
Owner ISHIGAKI CO LTD
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