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System for cooperative harmless treatment of sludge and straw

A harmless treatment and straw pretreatment technology, applied in the field of environmental protection, can solve the problems of easy sintering, low calorific value of sludge and straw combustion, etc., achieve low cost, realize efficient recycling, and realize the effect of reuse

Inactive Publication Date: 2017-05-10
孟祥雷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, the technical problem to be solved by the present invention is to provide a sludge and straw collaborative harmless treatment system to solve the problems in the prior art that the co-combustion of sludge and straw has a low calorific value and is easy to sinter

Method used

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  • System for cooperative harmless treatment of sludge and straw
  • System for cooperative harmless treatment of sludge and straw
  • System for cooperative harmless treatment of sludge and straw

Examples

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Effect test

Embodiment 1

[0082] A sludge and straw synergistic harmless treatment process according to the present invention comprises the following steps:

[0083] (1) Get 8kg of sludge (moisture content 80%) and carry out drying and dehydration treatment in a vacuum disc dryer until the moisture content is lower than 30%, for subsequent use;

[0084] Take 2kg of straw and pulverize it until the particle size is 20-30mm, set aside;

[0085] (2) mix the above-mentioned treated sludge and stalks, and add 2 kg of kaolin inert additives to mix;

[0086] (3) Pressing and dehydrating the mixture obtained in step (2) according to conventional methods, and then compressing to make fuel blocks of a certain size;

[0087] (4) Take the fuel block prepared in step (3) and place it in a heat-conducting oil heating device for incineration, collect ash and process tail gas, and recover the heat obtained by burning the fuel block into the vacuum disc dryer at the same time It is used for sludge drying and dehydrat...

Embodiment 2

[0089] A sludge and straw synergistic harmless treatment process according to the present invention comprises the following steps:

[0090] (1) Get 9kg of sludge (moisture content 80%) and carry out drying and dehydration treatment in a vacuum disc dryer until the moisture content is lower than 30%, for subsequent use;

[0091] Take 1kg of straw and crush it until the particle size is 20-30mm, set aside;

[0092] (2) mix the above-mentioned treated sludge and stalks, and add 1 kg of dolomite inert additive to mix;

[0093] (3) Pressing and dehydrating the mixture obtained in step (2) according to conventional methods, and then compressing to make fuel blocks of a certain size;

[0094] (4) Take the fuel block prepared in step (3) and place it in a heat-conducting oil heating device for incineration, collect ash and process tail gas, and recover the heat obtained by burning the fuel block into the vacuum disc dryer at the same time It is used for sludge drying and dehydration...

Embodiment 3

[0096] A sludge and straw synergistic harmless treatment process according to the present invention comprises the following steps:

[0097] (1) Get 8.5kg of sludge (moisture content 80%) and carry out drying and dehydration treatment in a vacuum disc dryer until the moisture content is lower than 30%, for subsequent use;

[0098] Take 1.5kg of straw and pulverize it until the particle size is 20-30mm, set aside;

[0099] (2) mix the above-mentioned treated sludge and straw, and add limestone and ammonium sulfate (mass ratio is 1: 1) inert additive 100g and mix;

[0100] (3) Pressing and dehydrating the mixture obtained in step (2) according to conventional methods, and then compressing to make fuel blocks of a certain size;

[0101] (4) Take the fuel block prepared in step (3) and place it in a heat-conducting oil heating device for incineration, collect ash and process tail gas, and recover the heat obtained by burning the fuel block into the vacuum disc dryer at the same ti...

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Abstract

The invention specifically relates to a system for cooperative harmless treatment of sludge and straw, belonging to the technical field of environmental protection. The system comprises a sludge pretreatment device, a straw pretreatment device, a mixing device, a pelletizer and a heat-conduction oil heating device. The whole process system realizes high-efficiency cyclic utilization, automatic totally-enclosed continuous operation, and zero-discharge of heat and waste materials; and the system can thoroughly realize reclamation of industrial waste and is low in cost and high in practicality.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a system for synergistic and harmless treatment of sludge and straw. Background technique [0002] As an inevitable product of sewage treatment plants, municipal sludge is solid waste generated during the treatment of urban domestic sewage and industrial wastewater. With the development of society and the gradual improvement of living standards, the output of urban sewage is also increasing, which leads to an increase in the output of urban sludge. Taking 20,000 tons / d municipal water plant as an example, the amount of dewatered sludge produced every day is about 6-10 tons. According to statistics, the annual sludge discharge in my country is about 22 million tons (moisture content is calculated as 80%), while If such a huge amount of urban sludge is not properly disposed of, it will cause secondary pollution to the environment. Municipal sludge cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44C10L5/46
CPCC10L5/445C10L5/46C10L2290/08C10L2290/06C10L2290/02C10L2290/28C10L2290/32C10L2290/30C10L2290/24Y02E50/10Y02E50/30
Inventor 孟祥雷查晓峰
Owner 孟祥雷
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