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System and method for simultaneously performing circulation utilization on sewage, sludge and domestic garbage

A technology for domestic waste and sludge, applied in the fields of sludge treatment, oxidation treatment of sludge, chemical instruments and methods, etc., can solve problems such as sludge disposal through landfills

Pending Publication Date: 2017-01-11
王冰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that domestic garbage can only be disposed of by incineration or landfill, and sludge can only be disposed of by landfill in the existing sewage treatment technology, the present invention provides a supercritical oxidation technology that can simultaneously treat sewage, sludge, and domestic waste. , and effectively utilize the produced steam, water and other products to obtain considerable economic benefits for the simultaneous recycling of sewage, sludge, and domestic waste; and realize the simultaneous recycling of sewage, sludge, and domestic waste in the above system ways to recycle

Method used

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  • System and method for simultaneously performing circulation utilization on sewage, sludge and domestic garbage
  • System and method for simultaneously performing circulation utilization on sewage, sludge and domestic garbage
  • System and method for simultaneously performing circulation utilization on sewage, sludge and domestic garbage

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Embodiment 1

[0042] Such as figure 1 As shown, the system of the present invention includes an oxidant supply system, a membrane enrichment system, a garbage pretreatment system, a material input system, and a reactor 5, wherein:

[0043] The oxidant supply system is used to supply oxidants such as oxygen or hydrogen peroxide with a temperature and pressure range of 300-400°C and 25-30Mpa high temperature and high pressure to the reactor, including an oxygen storage tank 11, a booster pump 12, a vaporizer 13, a first The heat exchanger 14 and the first preheater 16, the high-pressure buffer tank 15 is connected to the gas path between the first heat exchanger 14 and the first preheater 16, and the oxygen outlet of the first preheater 16 is connected to the reactor 5 The oxidant inlet 57.

[0044] The membrane enrichment system includes a pretreatment unit and a membrane enrichment unit 21, wherein the pretreatment unit includes a grid 22 and a grit chamber 23 connected in sequence to filt...

Embodiment 2

[0053] Outlets of the first heat exchanger 14 , the second heat exchanger 43 and the third heat exchanger 46 are sequentially connected to the pressure energy recovery system 61 , the gas-liquid separation system 62 and the carbon dioxide recovery system 63 , which is an extension of Embodiment 1. Among them, the pressure energy recovery system 61 recovers the gas pressure through a hydraulic turbine, and then uses the recovered pressure for power generation; in the gas-liquid separation system 62, the depressurized gas is dehydrated by a gas-liquid separator and an adsorber, and then passed through a water cooling system. The temperature of the device is lowered to 25°C, and the oxygen is separated by the rectification tower and sent to the oxidant supply system for reuse; the separated gas is sent to the carbon dioxide recovery system 63 to recover carbon dioxide; the water separated by the gas-liquid separator and the carbon dioxide recovery system 63 enters the water tank 47...

Embodiment 3

[0055] The steam output from the upper part of the reactor 5 is respectively used for power generation, heating, hazardous waste treatment and hydrogen production, which is an extension of Embodiment 1. Specifically, the cooling water from the generator unit 64 and the produced water output from the membrane enrichment unit 21 enter the electrolytic cell 65, the hydrogen obtained by electrolysis is recovered, and the oxygen is input into the oxidant supply system for reuse; steam is used to sterilize hazardous waste , the sterilized hazardous waste enters the grinder 33 of the garbage pretreatment system to be ground together with sludge and domestic garbage. Hazardous waste refers to hazardous chemicals and hazardous waste produced in industrial or medical processes.

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Abstract

The present invention relates to a system and a method for simultaneously performing circulation utilization on sewage, sludge and domestic garbage. The system is characterized by comprising an oxidant supply system, a membrane enrichment system, a garbage pretreatment system, a material input system, a reactor and an energy recovery system, wherein the oxidant supply system provides a high temperature and high pressure oxidant to the reactor, the membrane enrichment system is used for performing concentration separation on sewage to obtain concentrated water and produced water, the material input system provides a high temperature and high pressure pulping material to the reactor, the critical gas of the reactor provides the heating source of the heating oxidant and the pulping material for the oxidant supply system and the material input system, and a water vapor outlet and the produced water outlet of the membrane enrichment system are connected to electrolysis equipment. According to the present invention, the system simultaneously contains the supercritical water reactor and the membrane enrichment system so as to simultaneously treat high concentration sewage, sludge and domestic waste, wherein the high concentration sewage is concentrated by using the membrane enrichment system, and the concentrated sewage, the grinded sludge and the domestic garbage are mixed and matched to form the pulping material having sufficient fluidity.

Description

technical field [0001] The invention belongs to the fields of sewage and solid waste treatment and resource energy recycling, and in particular relates to a system and method for simultaneously recycling sewage, sludge and domestic garbage. Background technique [0002] When the temperature and pressure exceed 373.946°C and 22.064MPa respectively, the water will reach the supercritical state, and the water in the corresponding state is called supercritical water. Supercritical water has unique properties that normal temperature water does not have, such as non-polarity, low viscosity, low density and high diffusion coefficient. Oxygen and various organic substances form a homogeneous phase in the water system, eliminating mass transfer resistance and making the original The heterogeneous reaction between liquid phase, solid phase, and gas phase is transformed into a homogeneous oxidation reaction in SCW, with faster reaction rate and shorter residence time. And most of them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F11/00C02F11/06C25B1/04B09B3/00
CPCY02W10/30Y02W10/40Y02W30/20Y02E60/36Y02P20/54
Inventor 王冰林树青丁红玉
Owner 王冰
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