Sludge treatment method

A sludge treatment and sludge technology, which is applied in the fields of sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. Reduce the calorific value of combustion and other problems, to achieve the effect of improving dehydration effect, good dehydration effect and reducing dosage

Active Publication Date: 2015-04-29
EVERBRIGHT ENVIRONMENTAL PROTECTION TECH RES INST SHENZHEN CO LTD +2
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Problems solved by technology

The terminal moisture of the sludge after dehydration by the dehydration method is in the range of about 75%-85%, resulting in incomplete volume reduction, terminal resource utilization does not meet the requirements, and the investment is large, the operating cost is high, and the effect is not ideal
[0005] In addition, there is a treatment method of sludge modification and

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Embodiment Construction

[0025] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0026] In order to thoroughly understand the present invention, detailed steps will be provided in the following descriptions to illustrate the modified and dried treatment method for sewage plant sludge and the sewage plant sludge treatment system proposed in the present invention. It is evident that the practice of the invention is not limited to specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed de...

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Abstract

The invention provides a sludge treatment method. The method comprises the following steps: step one, adding polychloride aluminum in the sludge, stirring and mixing to change the granularity size of the sludge; and step two, dehydrating the sludge obtained in the S1, wherein the dehydrating comprises repeatedly feeding materials and repeatedly mechanically dehydrating so as to obtain the dehydrated sludge. The method provided by the invention has the effect that the sludge with water content of 80% can be dehydrated to about 50% through the mode of adding less medicaments and using a high-pressure plate frame, the process is simple, and the dehydrating effect is good. Furthermore, the dosage of a conditioner is greatly reduced, especially the lime is unnecessary, the heat value of the sludge cannot be influenced, and the dehydrated sludge has high heat value, and is especially suitable for incineration disposition.

Description

technical field [0001] The invention relates to a method for treating sludge, in particular to a method for deep dehydrating sludge by using a plate frame. Background technique [0002] The sludge produced by the increasing urban and industrial sewage treatment plants has become a serious hidden danger of environmental pollution and a new difficulty in environmental pollution control. The general treatment methods of sewage plant sludge mainly include dehydration, modification, drying, etc., and the main disposal methods include sea reclamation, landfill, land utilization, building materials, incineration, etc., and the treatment of the above sewage plant sludge is the above-mentioned sewage Preconditions for sludge disposal. [0003] Sea reclamation has been banned in various countries; landfill covers a large area and requires anti-seepage treatment, and a biogas recovery system and infiltration water treatment plant must be built, which is likely to pollute groundwater a...

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Application Information

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IPC IPC(8): C02F11/12C02F11/14
CPCC02F11/122C02F11/14C02F2303/06
Inventor 高兴斋魏小凤王冠平宗海峰叶明琪周立峰张学平贾林陆逸峰张鸣
Owner EVERBRIGHT ENVIRONMENTAL PROTECTION TECH RES INST SHENZHEN CO LTD
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