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Method for rapid recycling of sludge

A technology of recycling and sludge, applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc. The effect of reducing dosage, low cost and easy solid-liquid separation

Active Publication Date: 2012-11-21
北京绿创生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional sludge composting method has the disadvantages of occupying a large area, taking a long time (20 to 60 days), and incomplete harmlessness.

Method used

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  • Method for rapid recycling of sludge

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preprocessing unit

[0027] The raw sludge is sent to the sludge storage tank through the conveyor. The sludge in the sludge storage tank is exported from the bottom of the tank and transported to the physical and chemical preprocessor by a solid pump. In the physical and chemical preprocessor, the preparation of materials is completed. The prepared material is transported to the oxidation reactor through the material pump. In the physical and chemical preprocessor, the preheating of the material uses the separated liquid obtained through the forced filter and the liquid obtained by the centrifuge to exchange heat, and the temperature of the material rises to 60°C.

[0028] (2) Oxidation reaction unit

[0029] The low-temperature material from the physical and chemical preprocessor and the high-temperature material after the reaction from the oxidation reactor exchange heat through the heat exchanger, and the temperature of the material entering the oxidation rea...

Embodiment 2

[0034] (1) Preprocessing unit

[0035] The raw sludge is sent to the sludge storage tank through the conveyor. The sludge in the sludge storage tank is exported from the bottom of the tank and transported to the physical and chemical preprocessor by a solid pump. In the physical and chemical preprocessor, the preparation of materials is completed. The prepared material is transported to the oxidation reactor through the material pump. In the physical and chemical preprocessor, the preheating of the material uses the separated liquid obtained through the forced filter and the liquid obtained by the centrifuge to exchange heat, and the temperature of the material rises to 80°C.

[0036] (2) Oxidation reaction unit

[0037] The low-temperature material from the physical and chemical preprocessor and the high-temperature material from the oxidation reactor are exchanged through the heat exchanger, and the temperature of the material entering the oxidation reactor after heat exc...

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Abstract

The invention discloses a method for rapid recycling of sludge. The method comprises the following steps that: (1) raw material sludge is conveyed into a physicochemical preprocessor to prepare with water; (2) the prepared sludge is conveyed to an oxidation reactor through a heat exchanger, simultaneously oxygen is feed into the oxidation reactor, and the sludge and the oxygen are subjected to a part wet oxidation reaction in the oxidation reactor; (3) high-temperature materials and gas are obtained from the part wet oxidation reaction, with the gas being discharge and the high-temperature materials being inputted to the heat exchanger; (4) the high-temperature materials enter into a forced filter after passing through the heat exchanger, and concentrated materials obtained from the forced filter enter into an activating reactor to take an activation reaction; and (5) the activated materials enter into a puffing device to puff, and the puffed materials enter into a centrifuge to separate solid and liquid, thereby realizing the rapid recycling of the sludge. According to the method provided by the invention, the processed products is relatively easy to separate solid and liquid, specific filtration resistance is relatively small, and the product is free of toxicity and stink, and can be used as soil amendment and landscaping fertilizer or compost raw materials, etc.

Description

technical field [0001] The present invention relates to a rapid sludge recycling method, in particular to a sludge rapid treatment method suitable for harmless, reduction, and resourceful treatment of sludge produced in municipal sewage treatment plants, belonging to the field of sewage treatment . Background technique [0002] A large amount of sludge produced by urban sewage treatment plants has a high moisture content, is perishable, has a strong odor, and contains a large number of pathogenic bacteria, parasite eggs, heavy metals such as cadmium, chromium, lead, mercury, and toxic, harmful and carcinogenic substances that are difficult to degrade. If not handled properly, it will cause direct or potential pollution to the environment. [0003] In my country, urban sewage treatment plants are in the peak period of construction. With the improvement of sewage treatment rate, the amount of sludge produced will inevitably increase significantly. After the sludge that has n...

Claims

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Application Information

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IPC IPC(8): C02F11/00
Inventor 李玉鸿武显亮姜鹏明陶明涛沙孝军木塔里甫黄波关冲王桂德
Owner 北京绿创生态科技有限公司
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