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Sludge dewatering and drying method

A drying method and sludge dewatering technology, applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of low sewage dehydration rate, low dehydration efficiency, and difficult disposal and utilization of filter residues. To achieve the effect of simple process and strong practicability

Inactive Publication Date: 2016-05-04
JINJIANG SHILONG KITCHEN EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The invention provides a sludge dehydration and drying method, the main purpose of which is to overcome the defects of low sewage dehydration rate, low dehydration efficiency and difficult treatment and utilization of filter residues existing in existing sludge treatment methods

Method used

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Embodiment Construction

[0018] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0019] refer to figure 1 and figure 2 . A sludge treatment device comprises a sludge heavy metal biochemical treatment tank 1 , a sludge dehydration conditioning tank 2 and a sludge dehydration drying tank 3 into which sludge 9 is sequentially fed.

[0020] refer to figure 1 and figure 2 . The sludge heavy metal biochemical treatment tank 1 includes a first tank body 10, a first drainage cover 11 arranged inside the first tank body 10, and a blower mechanism 4, and the first tank body 10 is provided with a A first feeding port 101 for putting in sludge raw materials containing heavy metals, a first feeding port 102 for putting in a nutrient solution containing thiobacterium oxidans, and a first vent 103 communicated with the blower mechanism 4, so The first vent 103 is located at the bottom of the first tank body 10, and the first drainage cover 1...

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Abstract

The invention provides a sludge dewatering and drying method. The method comprises the following steps: a pressurization apparatus enhances pressure in an upper tank, a vacuum tank reduces pressure in a lower tank to a vacuum state, so that a large pressure difference is formed between the upper tank and the lower tank; water in mixed liquid with sludge containing water in the upper tank can rapidly pass a filter layer, and the sludge remains in the upside of the filter layer; the pressure difference formed between the upper tank and the lower tank ensures rapid solid-liquid separation; after the solid-liquid separation finishes, a microwave emitter is started for emitting microwave, action between microwave and water molecules in the sludge is carried out for heating, so that moisture in the sludge diffuses and volatilizes to air, and efficacy for drying sludge is realized.

Description

technical field [0001] The invention relates to a sludge treatment method, in particular to a sludge dehydration and drying method. Background technique [0002] In recent years, with the rapid growth of my country's sewage treatment capacity and treatment rate, a large amount of excess sludge has been produced. At present, only a small part of the sludge from urban sewage treatment plants in the country is used for sanitary landfill, land utilization, incineration and building material utilization, etc., and most of them have not undergone standardized treatment and disposal. [0003] In the process of sewage treatment, some sewage contains a large number of larger particles and suspended solids that are difficult to settle, and some particles and suspended solids are difficult to biochemically degrade. At this time, the sewage is usually dehydrated. After dehydration, the formation The filter residue can be recycled as filler. [0004] For example, in the authorized anno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/12
CPCC02F11/12C02F11/121C02F2303/06
Inventor 潘国良潘捌贡
Owner JINJIANG SHILONG KITCHEN EQUIP CO LTD
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