CN105731744A - Sludge treatment method and sludge treatment system - Google Patents

Sludge treatment method and sludge treatment system Download PDF

Info

Publication number
CN105731744A
CN105731744A CN201610166309.7A CN201610166309A CN105731744A CN 105731744 A CN105731744 A CN 105731744A CN 201610166309 A CN201610166309 A CN 201610166309A CN 105731744 A CN105731744 A CN 105731744A
Authority
CN
China
Prior art keywords
mud
storage tank
sludge
dewatered sludge
wet
Prior art date
Application number
CN201610166309.7A
Other languages
Chinese (zh)
Inventor
陈�峰
付伟贤
Original Assignee
新奥科技发展有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 新奥科技发展有限公司 filed Critical 新奥科技发展有限公司
Priority to CN201610166309.7A priority Critical patent/CN105731744A/en
Publication of CN105731744A publication Critical patent/CN105731744A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/18Treatment of sludge; Devices therefor by thermal conditioning

Abstract

The invention relates to a sludge treatment method and a sludge treatment system.Dry sludge and wet sludge are mixed to effectively solve the blockage problem of sludge in a supercritical reaction device by a mixing proportion of the dry and wet sludge at high temperature and high pressure.Fluidity of the sludge is kept while sludge treatment efficiency is guaranteed, energy utilization rate can be increased, and sludge treatment cost is greatly reduced.

Description

The processing method of mud and system
Technical field
The present invention relates to the technical field of Treatment of Sludge, refer in particular to a kind of method and system utilizing supercritical water oxidation lignin-sludge.
Background technology
Treatment of Sludge is as one branch of environmental protection industry (epi), and mentioned by since " 12 ", policy has, but dynamics is so big not as the field such as desulphurization denitration, waste incineration.Along with country is about to put into effect water prevention and cure of pollution action plan (" cleaning water action plan "), Treatment of Sludge is expected to become the new theme of environmental protection investments.The mud that general sewage treatment plant produces is that water content is at 75%~85% solid or liquid shape material not waited, solid constituent therein is mainly made up of organic relic, microorganism, inorganic particle, colloid and flocculation institute with medicament etc., it is a kind of based on organic principle, the mixture of complicated components, and include the organic matter of potential value, nitrogen (N), phosphorus (P), potassium (K) and various trace element.
Supercritical water oxidation method is under the high-temperature and high-pressure conditions of the critical point (T=374.15 DEG C, P=22.12MPa) exceeding water, with oxygen and other oxidants, Organic substance is carried out the method that " burning " aoxidizes.Its response speed is fast, oxidation efficiency is significantly high, and most of organic clearance is up to more than 90%.Current China utilizes the technology of supercritical water oxidation method lignin-sludge still in industrialization conceptual phase, for ensureing the mobility of mud, commonly used to the mode of dilute in mud raw material, Chinese invention patent if publication number is CN101327908 discloses a kind of mud method of preparing hydrogen-rich gas by continuous catalysis gasification in supercritical water, first mud is configured to the mixture of certain density mud or mud and alkali metal hydroxide and/or alkaline earth oxide or hydroxide, it is ensured that the continuous high-pressure delivery of mud;Water is boosted and preheats;Then water and mud are entered under uniform pressure promotes by certain weight ratio the reactor of laser heating, when the water in reactor and slurry mixture reach to stop after water supercriticality to convert for 1~10 minute, product sequentially enters gas-liquid-solid knockout drum, knockout drum, gun barrel, progressively separating and obtain the clear energy sources such as hydrogen-rich gas and liquid phase oil product, the solid product of separation and recirculated water are respectively by tank bottoms discharge.Although which improves the mobility of mud, but owing to sludge concentration reduces, cause that the mud phosphorus content entering supercritical reaction device is low, it is impossible to maintaining the heat that id reaction needs, therefore the treatment effeciency of mud is very low.
In order to overcome the problems referred to above, commonly used at present add the carbonaceous material such as methanol, ethanol to supercritical reaction device and maintain stablizing and carrying out of reaction, but which can cause the waste of the high-quality energy, is greatly increased the processing cost of mud.
Summary of the invention
For this, the technical problem to be solved is in that to overcome in prior art when utilizing supercritical water oxidation lignin-sludge, poor mobile performance causes that problem that treatment effeciency is low is thus providing a kind of mobility that namely ensure that mud, ensure that again the processing method of the treatment effeciency of mud and mud with low cost and system.
For solving above-mentioned technical problem, the processing method of a kind of mud of the present invention, described mud includes dewatered sludge and wet mud, its step is as follows: step S1: described dewatered sludge and described wet mud are mixed in proportion formation mixing sludge, and it is 10%-15% that wherein said dewatered sludge accounts for the mass fraction of described wet mud;Step S2: described mixing sludge is delivered in supercritical reaction apparatus and processes.
In one embodiment of the invention, the method that dewatered sludge described in described step S1 and described wet mud are mixed in proportion is: first, it is sampled analyzing to the component of dewatered sludge described before mixture and wet mud, detects composition and the viscosity of described dewatered sludge and wet mud;Then, described dewatered sludge and wet mud are mixed at different temperature according to different ratios, analyze mixed ratio and the temperature variation relation to sewage sludge viscosity;Finally, according to mixed ratio and temperature, the variation relation of sewage sludge viscosity is determined mixed ratio jointly.
In one embodiment of the invention, the step S01 that sludge dewatering is formed dewatered sludge is also included before described step S1.
In one embodiment of the invention, after completing described step S01, perform step S02 dewatered sludge being pressurizeed and heating.
In one embodiment of the invention, also include before described step S1 mud carrying out break process and mud being diluted being formed the step S03 of wet mud.
Present invention also offers the process system of a kind of mud, utilize described method for sludge treatment that mud is processed, including for storing the dewatered sludge storage tank of dewatered sludge and for the wet mud storage tank storing wet mud and the mixing sludge storage tank mixed for dewatered sludge and wet mud, described dewatered sludge storage tank is all connected with described mixing sludge storage tank with described wet mud storage tank, the port of export of described mixing sludge storage tank is connected with supercritical reaction apparatus, and described mixing sludge storage tank is positioned at the top of described supercritical reaction apparatus.
In one embodiment of the invention, described dewatered sludge storage tank is positioned at the top of described mixing sludge storage tank, and described wet mud storage tank is positioned at the top of described mixing sludge storage tank or is arranged in parallel with described mixing sludge storage tank.
In one embodiment of the invention, described dewatered sludge storage tank is all connected with the mud storage tank being used for storing pending mud with described wet mud storage tank, described mud storage tank is connected with dewatered sludge storage tank by dehydration device, described mud storage tank is connected by lapping device and the first pressue device, and described first pressue device is connected with described wet mud storage tank by the first preheating device.
In one embodiment of the invention, described supercritical reaction apparatus presets device by first and the second preheating device is connected, and described second preheating device is connected with segregation apparatus by expansion gear.
In one embodiment of the invention, described dewatered sludge storage tank passes through the second pressue device and heater, and described heater is connected with described mixing sludge storage tank.
The technique scheme of the present invention has the advantage that compared to existing technology
The processing method of mud of the present invention and system, mud blockage problem in supercritical reaction apparatus can be solved, ensure the mobility of mud, ensure that again the treatment effeciency of mud, and in system, additionally do not add carbonaceous organic material matter, improving the utilization rate of the energy, big degree reduces the processing cost of mud.
Accompanying drawing explanation
In order to make present disclosure be more likely to be clearly understood, below according to specific embodiments of the invention and in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the process system schematic of mud described in the embodiment of the present invention one;
Fig. 2 is the schematic diagram that dewatered sludge of the present invention mixes with wet mud;
Fig. 3 is the process system schematic of mud described in the embodiment of the present invention two;
Fig. 4 is the process system schematic of mud described in the embodiment of the present invention three.
Detailed description of the invention
Embodiment one:
As shown in Figure 1, present embodiments provide the processing method of a kind of mud, described mud includes dewatered sludge and wet mud, its step is as follows: step S1: described dewatered sludge and described wet mud are mixed in proportion formation mixing sludge, and it is 10%-15% that wherein said dewatered sludge accounts for the mass fraction of described wet mud;Step S2: described mixing sludge is delivered in supercritical reaction apparatus and processes.
The processing method of mud of the present invention, in described step S1, described dewatered sludge and described wet mud are mixed in proportion formation mixing sludge, it is 10%-15% that wherein said dewatered sludge accounts for the mass fraction of described wet mud, such that it is able to effectively solve mud blockage problem in supercritical reaction apparatus, not only keep the mobility of mud, the treatment effeciency of mud can be improved again;In described step S2, mixing sludge is delivered in supercritical reaction apparatus and processes, described mixing sludge is decomposed into solid product and gas-liquid product by described supercritical reaction apparatus, this step make use of mud self heat to provide thermal source for supercritical reaction, ensure that and enter the calorific value of mud before supercritical reaction apparatus, it is effectively increased the treatment effeciency of mud, and realize the stable operation of supercritical reaction while without other fuel, owing to need not additionally add carbonaceous organic material matter, it is thus advantageous to save the energy, reduces the processing cost of mud.
In the present embodiment, the method being mixed in proportion of described dewatered sludge and described wet mud is: first, is sampled analyzing to the component of dewatered sludge described before mixture and wet mud, detects composition and the viscosity of described dewatered sludge and wet mud;Then, described dewatered sludge and wet mud are mixed at different temperature according to different ratios, analyze logical mixed ratio and the temperature variation relation to sewage sludge viscosity;Finally, according to mixed ratio and temperature, the variation relation of sewage sludge viscosity is determined mixed ratio jointly.Can ensure that the viscosity of mud while can meeting sludge calorific value by above-mentioned steps, solve mud blockage problem in supercritical reaction apparatus, improve the treatment effeciency of mud.
The mixed proportion of described dewatered sludge and described wet mud, can dewatered sludge mass fraction described in prioritizing selection to account for described wet sludge quality mark be 10%-15%.If described dewatered sludge mass fraction accounts for the ratio of described wet sludge quality mark higher than 15%, although the calorific value of mud can be improved, intensified response intensity, but owing to the amount of dewatered sludge increases, the amount making wet mud reduces, it is difficult to after mixing reach the high temperature of supercritical reaction, condition of high voltage, it is necessary to preheating again, pressurization, causes that technique is loaded down with trivial details;If described dewatered sludge mass fraction accounts for described wet sludge quality mark mixed ratio lower than 10%, then the calorific value of mud is lower than 1.10MJ/kg, and mud self cannot provide the energy that supercritical reaction needs, and therefore cannot ensure the continuous and steady operation of supercritical reaction.The Industrial Analysis indexs such as the calorific value of mud, it is possible to obtain by experiment, typical but non-limiting: the M(moisture of mud) it is 5.59%, A(ash) it is 66.64%, V(fugitive constituent) it is 25.33%, Fc(fixed carbon) it is 12.7%, dry base heat value is 15.23MJ/kg;The water content of mud raw material is 77-80%, and dewatered sludge water content is 65-70%, and wet sludge moisture content is 88-90%.
Also including the step S01 that sludge dewatering is formed dewatered sludge before described step S1, the moisture in mud can being reduced by described step S01 thus obtaining dewatered sludge.Specifically, the water content of usual mud is 77%-85%, can obtain the dewatered sludge that water content is 65%-70% after described step S01, so that the dewatered sludge ultimately formed is conducive to mixing with described wet mud.After completing described step S01, perform step S02 dewatered sludge being pressurizeed and heating, the pressure and temperature being made described dewatered sludge by described step S02 is raised, and forms mixing sludge, be conducive to the treatment effeciency improving described supercritical reaction apparatus to mixing sludge after mixing with described wet mud.
Also include before described step S1 mud carrying out break process and mud being diluted being formed the step S03 of wet mud, in described step S03, mud is carried out break process, make mud reach homogenizing, refinement;Mud being diluted simultaneously, increase the mobility of mud, the sludge moisture content after dilution controls at 88%-90%, to avoid mud blocking in subsequent handling.
After completing described step S03, perform the step S04 wet mud being pressurizeed and heating, in described step S04, first wet mud is pressurizeed, and Stress control is at 25-36Mpa;Then the wet mud after pressurization being heated, heating and temperature control, at 350-500 DEG C, so that the wet mud ultimately formed is conducive to mixing with described dewatered sludge, improves the described supercritical reaction apparatus treatment effeciency to mixing sludge.
In this method, described dewatered sludge is injected in described wet mud, the convenient dewatered sludge that controls flows in described wet mud, thus being conducive to the blend amount controlling described dewatered sludge and wet mud, dewatered sludge and wet sludge agitation are formed uniformly mixing sludge, thus being beneficial to dewatered sludge and wet mud is fully contacted, wherein said dewatered sludge refers to water content mud below 75%, and described wet mud refers to water content mud more than 80%.
Embodiment two:
The present embodiment provides a kind of sludge treating system, utilizes method for sludge treatment described in embodiment one that mud is processed, the following detailed description of:
As shown in Figure 1, described sludge treating system includes the dewatered sludge storage tank 12 for storing dewatered sludge and for the wet mud storage tank 16 storing wet mud and the mixing sludge storage tank 17 mixed for dewatered sludge and wet mud, described dewatered sludge storage tank 12 is all connected with described mixing sludge storage tank 17 with described wet mud storage tank 16, the port of export of described mixing sludge storage tank 17 is connected with supercritical reaction apparatus 18, and described mixing sludge storage tank 17 is positioned at the top of supercritical reaction apparatus 18.
nullSludge treating system described in the present embodiment includes dewatered sludge storage tank 12、Wet mud storage tank 16、Mixing sludge storage tank 17 and supercritical reaction apparatus 18,Wherein said dewatered sludge storage tank 12 is used for storing dewatered sludge,Described wet mud storage tank 16 is used for storing wet mud,Described mixing sludge storage tank 17 is for dewatered sludge and the mixing of wet mud,Described dewatered sludge storage tank 12 is all connected with described mixing sludge storage tank 17 with described wet mud storage tank 16,Such that it is able to dewatered sludge and wet mud are delivered in described mixing sludge storage tank 17 respectively,Facilitate dewatered sludge and the mixing of wet mud,The port of export of described mixing sludge storage tank 17 is connected with supercritical reaction apparatus 18,And described mixing sludge storage tank 17 is positioned at the top of described supercritical reaction apparatus 18,Such that it is able to after making mixing sludge discharge from the port of export of described mixing sludge storage tank 17,It is directly entered in described supercritical reaction apparatus 18,Improve the described supercritical reaction apparatus 18 treatment effeciency to mixing sludge,Described mixing sludge is decomposed into solid product 23 and gas-liquid product by described supercritical reaction apparatus 18,Owing to make use of mud self heat to provide thermal source for supercritical reaction,Thus ensure that the treatment effeciency of mud.
In the present embodiment, described dewatered sludge storage tank 12 is all connected with the mud storage tank 10 being used for storing pending mud with described wet mud storage tank 16.Specifically, described mud storage tank 10 is connected with dehydration device 11, and described dehydration device 11 is connected with dewatered sludge storage tank 12.Storing elimination portion of water after the mud that water content is 77%-85% enters described dehydration device 11 in described mud storage tank 10 and be changed into the dewatered sludge that water content is 65%-70%, described dewatered sludge is stored in dewatered sludge storage tank 12.Described mud storage tank 10 is connected with lapping device 13, stores the mud that water content is 77%-85% and enters in described lapping device 13, by described lapping device 13, mud is carried out break process, make mud reach homogenizing, refinement in described mud storage tank 10.Described dehydration device 11 is connected with described lapping device 13, mud is made to accept the waste water that described dehydration device 11 produces while grinding, mud being diluted, increases the mobility of mud, the wet sludge moisture content after dilution controls in the 88%-90% blocking to avoid mud in subsequent handling.Described lapping device 13 is connected with the first pressue device 14, wet mud after the process of ground device 13 enters described first pressue device 14 and mud is pressurizeed, wherein Stress control is at 25-36Mpa, described first pressue device 14 is connected with the first preheating device 15, enter back into described first preheating device 15 after wet mud pressurization mud is preheated, preheating temperature controls at 350-500 DEG C, described first preheating device 15 is connected with described wet mud storage tank 16, pressurized, wet mud after preheating is delivered in described mixing sludge storage tank 17, after mixing with described dewatered sludge, be conducive to the treatment effeciency improving described supercritical reaction apparatus 18 to mixing sludge.
Described dewatered sludge storage tank 12 is all connected with described mixing sludge storage tank 17 with described wet mud storage tank 16, the wet mud discharged from described wet mud storage tank 16 and the dewatered sludge discharged from described dewatered sludge storage tank 12 are delivered in described mixing sludge storage tank 17 jointly, described mixing sludge storage tank 17 is connected with described supercritical reaction apparatus 18, mixing sludge is made to enter in described supercritical reaction apparatus 18, mud in described supercritical reaction apparatus 18 with carry out 350-500 DEG C of autoxidator storage tank 22, (oxidant is selected from oxygen to the oxidant of 25-40Mpa, the combination of any a kind or at least 2 kinds in air and hydrogen peroxide) effect lower generation supercritical oxidation reaction, the injection rate of oxidant is that mud burns 1.1-2.0 times of required oxidizer completely.nullSolid product 23 and gas-liquid product it is broken down into through supercritical reaction mixing sludge,Wherein solid product enters ash slag ladle by lock hopper bottom described supercritical reaction apparatus 18,Described supercritical reaction apparatus 18 is connected with the second preheating device 19,400-550℃、The gas-liquid product input of about 22MPa is to described second preheating device 19,Gas-liquid product is lowered the temperature by described second preheating device 19,Described second preheating device 19 is connected with expansion gear 20,Gas-liquid product after cooling is made a gift to someone in described expansion gear 20,By described expansion gear 20, the Pressure Drop of gas-liquid product is low to moderate 0.1-6MPa,Described expansion gear 20 is connected with segregation apparatus 21,Gas-liquid product after pressure reduction enters described segregation apparatus 21,Gaseous product 24 and product liquid 25 it is separated into by described segregation apparatus 21.
As shown in Figure 2, in order to described dewatered sludge and described wet mud are fully contacted formation mixing sludge in described mixing sludge storage tank 16, described dewatered sludge storage tank 12 is positioned at the top of described mixing sludge storage tank 17, described wet mud storage tank 16 is positioned at the top of described mixing sludge storage tank 17 or is arranged in parallel with described mixing sludge storage tank 17, thus forming a set of dry and wet mud blending device, the convenient dewatered sludge that controls flows in described wet mud, is conducive to the blend amount controlling described dewatered sludge and wet mud.Specifically, the arrival end of described dewatered sludge storage tank 12 is provided with dewatered sludge inlet valve 12a, the port of export of described dewatered sludge storage tank 12 is provided with dewatered sludge outlet valve 12b, the arrival end of described wet mud storage tank 16 is provided with wet mud inlet valve 16a, and the port of export is provided with wet sludge outlet valve 16b, the port of export of described wet mud storage tank 16 is provided with mixing sludge outlet valve 16b, and described mixing sludge storage tank 17 is provided with mixing sludge outlet valve 17b.When dewatered sludge and wet mud mixture, it is first turned on dewatered sludge reservoir inlet valve 12a, after the dewatered sludge setting flow enters dewatered sludge storage tank 12, closes dewatered sludge reservoir inlet valve 12a;Open described wet mud inlet valve 16a, enter wait the wet mud setting flow and after wet mud storage tank 16, close wet mud inlet valve 16a;Open described wet sludge outlet valve 16b, make wet mud flow in described mixing sludge storage tank 17, must not exceed the 60% of tank volume for reaching the wet mud volume in mixing sludge storage tank 17 of good mixed effect;Opening described dewatered sludge outlet valve 12b, the dewatered sludge in described dewatered sludge storage tank 12 enters in described mixing sludge storage tank 17 under gravity, rear closedown dewatered sludge outlet valve 12b.Owing in described mixing sludge storage tank 17, bottom arranges homogeneous device, dewatered sludge and wet sludge agitation can be formed uniformly mixing sludge by described homogeneous device, it is beneficial to dewatered sludge and wet mud is fully contacted, mix homogeneously, such that it is able to dry and wet sludge agitation is formed uniformly mixing sludge, the mixing sludge outlet valve 17b of described mixing sludge storage tank 17 is connected with described supercritical reaction apparatus 18, described mixing sludge utilizes self heat can provide thermal source for supercritical reaction apparatus 18, such that it is able to what realize continuous-stable supplies mixing sludge for described supercritical reaction apparatus 18.
In the present embodiment, the continuous-stable for ensureing described supercritical reaction apparatus 18 operates, it is possible to be arranged in parallel two set dry and wet mud blending devices, owing to principle is identical, no longer specifically discusses.
Embodiment three:
The present embodiment provides a kind of sludge treating system, and in order to improve the utilization rate of the energy further, the gas-liquid product that supercritical reaction apparatus 21 described in the sludge treating system described in embodiment two is discharged has made improvement, the following detailed description of:
As shown in Figure 3, described supercritical reaction apparatus 21 is connected with the first preheating device 15, the gas-liquid product being decomposed through supercritical reaction mixing sludge enters in described first preheating device 15, heat exchange cooling is carried out with described wet mud, gas-liquid product temperatur after heat exchange is reduced to 300-350 DEG C, wet mud temperature is promoted to 300-500 DEG C, described first preheating device 15 is connected with described second preheating device 19, gas-liquid product temperature after described second preheating device 19 after temperature reduction continues to be reduced to 100-200 DEG C, and room temperature mud temperature is increased to about 200 DEG C.Described second preheating device 19 is connected with expansion gear 20, gas-liquid product after cooling enters in described expansion gear 20 again, pressure can be converted to electric energy, and Pressure Drop is low to moderate 0.1-6MPa, described expansion gear 20 is connected with segregation apparatus 21, pressure and temperature all reduce after gas-liquid product enter in described segregation apparatus 21, be finally separated into gaseous product 24 and product liquid 25.Described second preheating device 19 is connected with described dewatered sludge storage tank 12 and described wet mud storage tank 16 respectively, the temperature making room temperature mud is raised, realize the effective utilization to high-grade waste heat, being conducive to Treatment of Sludge is dewatered sludge and wet mud, facilitate dry and wet mud mixture under high temperature, high pressure, thus solving mud blockage problem in supercritical reaction apparatus, also assures that simultaneously and entering the calorific value of mud before supercritical reaction apparatus, being effectively increased system energy efficiency.
Described wastewater storage tank 22 is connected with described lapping device 13, when producing, by described dehydration device 11, the water yield requirement that the brine waste produced in dewatered sludge process cannot meet required for wet mud mixture, by using the brine waste of wastewater storage tank 22 to supplement;Or the dewatered sludge storage capacity in described dewatered sludge storage tank 12 is when reaching certain limit, newly enters mud and fully enter described lapping device 13, mix with the waste water of described wastewater storage tank 22 in described lapping device 13.
In the present embodiment, described dehydration device 11 can be defecator or drying device, described defecator fingerboard frame filter press.
Embodiment four:
The present embodiment provides a kind of sludge treating system, in order to improve the described supercritical reaction apparatus treatment effeciency to mixing sludge, dewatered sludge before being introduced into described mixing sludge storage tank in sludge treating system described in embodiment two or embodiment three has been made process, the following detailed description of:
As shown in Figure 4, described dewatered sludge storage tank 12 is connected with heater 27 by the second pressue device 26, entering back into described heater 27 after the dewatered sludge pressurization by described second pressue device 26 that described dewatered sludge storage tank 12 is discharged dewatered sludge is preheated, described heater 27 is connected with described mixing sludge storage tank 17.Pressurized, preheating after dewatered sludge be delivered in described mixing sludge storage tank 17, after mixing with described wet mud, be conducive to the treatment effeciency improving described supercritical reaction apparatus 18 to mixing sludge.
In the present embodiment, described first pressue device 14 refers to force (forcing) pump.
To sum up, above technical scheme of the present invention has the advantage that
1. the processing method of mud of the present invention, in described step S1, described dewatered sludge and described wet mud are mixed in proportion formation mixing sludge, it is 10%-15% that wherein said dewatered sludge accounts for the mass fraction of described wet mud, such that it is able to effectively solve mud blockage problem in supercritical reaction apparatus, not only keep the mobility of mud, the treatment effeciency of mud can be improved again;In described step S2, mixing sludge is delivered in supercritical reaction apparatus and processes, described mixing sludge is decomposed into solid product and gas-liquid product by described supercritical reaction apparatus, this step make use of mud self heat to provide thermal source for supercritical reaction, ensure that and enter the calorific value of mud before supercritical reaction apparatus, it is effectively increased the treatment effeciency of mud, and realize the stable operation of supercritical reaction while without other fuel, owing to need not additionally add carbonaceous organic material matter, it is thus advantageous to save the energy, reduces the processing cost of mud.
null2. sludge treating system of the present invention,Dewatered sludge storage tank、Wet mud storage tank、Mixing sludge storage tank and supercritical reaction apparatus,Wherein said dewatered sludge storage tank is used for storing dewatered sludge,Described wet mud storage tank is used for storing wet mud,Described mixing sludge storage tank is for dewatered sludge and the mixing of wet mud,Described dewatered sludge storage tank is all connected with described mixing sludge storage tank with described wet mud storage tank,Such that it is able to dewatered sludge and wet mud are delivered in described mixing sludge storage tank respectively,Facilitate dewatered sludge and the mixing of wet mud,The port of export of described mixing sludge storage tank is connected with supercritical reaction apparatus,And described mixing sludge storage tank is positioned at the top of described supercritical reaction apparatus,Such that it is able to after making mixing sludge discharge from the port of export of described mixing sludge storage tank,It is directly entered in described supercritical reaction apparatus,Improve the described supercritical reaction apparatus treatment effeciency to mixing sludge,Described mixing sludge is decomposed into solid product and gas-liquid product by described supercritical reaction apparatus,Owing to make use of mud self heat to provide thermal source for supercritical reaction,Thus ensure that the treatment effeciency of mud.
Obviously, above-described embodiment is only for clearly demonstrating example, not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change thus extended out or variation are still in the protection domain of the invention.

Claims (10)

1. a processing method for mud, described mud includes dewatered sludge and wet mud, and its step is as follows:
Step S1: described dewatered sludge and described wet mud are mixed in proportion formation mixing sludge, and it is 10%-15% that wherein said dewatered sludge accounts for the mass fraction of described wet mud;
Step S2: described mixing sludge is delivered in supercritical reaction apparatus and processes.
2. the processing method of mud according to claim 1, it is characterized in that: the method that dewatered sludge described in described step S1 and described wet mud are mixed in proportion is: first, it is sampled analyzing to the component of dewatered sludge described before mixture and wet mud, detects composition and the viscosity of described dewatered sludge and wet mud;Then, described dewatered sludge and wet mud are mixed at different temperature according to different ratios, analyze mixed ratio and the temperature variation relation to sewage sludge viscosity;Finally, according to mixed ratio and temperature, the variation relation of sewage sludge viscosity is determined mixed ratio jointly.
3. the processing method of mud according to claim 1, it is characterised in that: also include the step S01 that sludge dewatering is formed dewatered sludge before described step S1.
4. the processing method of mud according to claim 3, it is characterised in that: after completing described step S01, perform step S02 dewatered sludge being pressurizeed and heating.
5. the processing method of mud according to claim 1, it is characterised in that: also include before described step S1 mud carrying out break process and mud being diluted being formed the step S03 of wet mud.
6. the process system of a mud, utilize method for sludge treatment described in claim 1 that mud is processed, including for storing the dewatered sludge storage tank of dewatered sludge and for the wet mud storage tank storing wet mud and the mixing sludge storage tank mixed for dewatered sludge and wet mud, it is characterized in that: described dewatered sludge storage tank is all connected with described mixing sludge storage tank with described wet mud storage tank, the port of export of described mixing sludge storage tank is connected with supercritical reaction apparatus, and described mixing sludge storage tank is positioned at the top of described supercritical reaction apparatus.
7. the process system of mud according to claim 6, it is characterised in that: described dewatered sludge storage tank is positioned at the top of described mixing sludge storage tank, and described wet mud storage tank is positioned at the top of described mixing sludge storage tank or is arranged in parallel with described mixing sludge storage tank.
8. the process system of mud according to claim 7, it is characterized in that: described dewatered sludge storage tank is all connected with the mud storage tank being used for storing pending mud with described wet mud storage tank, described mud storage tank is connected with dewatered sludge storage tank by dehydration device, described mud storage tank is connected by lapping device and the first pressue device, and described first pressue device is connected with described wet mud storage tank by the first preheating device.
9. the process system of mud according to claim 8, it is characterised in that: described supercritical reaction apparatus presets device by first and the second preheating device is connected, and described second preheating device is connected with segregation apparatus by expansion gear.
10. the process system of mud according to claim 6, it is characterised in that: described dewatered sludge storage tank passes through the second pressue device and heater, and described heater is connected with described mixing sludge storage tank.
CN201610166309.7A 2016-03-22 2016-03-22 Sludge treatment method and sludge treatment system CN105731744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610166309.7A CN105731744A (en) 2016-03-22 2016-03-22 Sludge treatment method and sludge treatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610166309.7A CN105731744A (en) 2016-03-22 2016-03-22 Sludge treatment method and sludge treatment system

Publications (1)

Publication Number Publication Date
CN105731744A true CN105731744A (en) 2016-07-06

Family

ID=56251918

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610166309.7A CN105731744A (en) 2016-03-22 2016-03-22 Sludge treatment method and sludge treatment system

Country Status (1)

Country Link
CN (1) CN105731744A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106145580A (en) * 2016-08-11 2016-11-23 新奥科技发展有限公司 The extracting method of P elements and device in mud
CN110803753A (en) * 2019-10-12 2020-02-18 西安交通大学 Starting system and method based on supercritical water oxidation technology

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102503066A (en) * 2011-12-23 2012-06-20 南京工业大学 System and method for supercritical water oxidation treatment and resource utilization of organic sludge
CN102730917A (en) * 2012-06-20 2012-10-17 河海大学 Low-water-content dehydrated sludge direct supercritical water gasification processing apparatus and method
JP5463524B2 (en) * 2007-12-20 2014-04-09 国立大学法人広島大学 Biomass gasification method and biomass gasification system
CN204752349U (en) * 2015-04-10 2015-11-11 王冰 System for sewage, mud, domestic waste carry out cyclic utilization simultaneously

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5463524B2 (en) * 2007-12-20 2014-04-09 国立大学法人広島大学 Biomass gasification method and biomass gasification system
CN102503066A (en) * 2011-12-23 2012-06-20 南京工业大学 System and method for supercritical water oxidation treatment and resource utilization of organic sludge
CN102730917A (en) * 2012-06-20 2012-10-17 河海大学 Low-water-content dehydrated sludge direct supercritical water gasification processing apparatus and method
CN204752349U (en) * 2015-04-10 2015-11-11 王冰 System for sewage, mud, domestic waste carry out cyclic utilization simultaneously

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106145580A (en) * 2016-08-11 2016-11-23 新奥科技发展有限公司 The extracting method of P elements and device in mud
CN106145580B (en) * 2016-08-11 2020-04-10 新奥环保技术有限公司 Method and device for extracting phosphorus element from sludge
CN110803753A (en) * 2019-10-12 2020-02-18 西安交通大学 Starting system and method based on supercritical water oxidation technology

Similar Documents

Publication Publication Date Title
CN103396815B (en) Method for preparing carbon materials by use of sludge
CN103708455B (en) The method preparing carbide
Malins et al. Bio-oil from thermo-chemical hydro-liquefaction of wet sewage sludge
Xu et al. Treatment of urban sludge by hydrothermal carbonization
CN103979491B (en) A kind of method of mud and the blended gasification hydrogen-producing of biomass
KR20110099305A (en) Automatic rubber powder plasticizing method and equipment for automatic rubber powder plasticizing method
CN104355519A (en) Comprehensive sludge treating method based on hydrothermal carbonization and fast microwave pyrolysis
JPWO2011111189A1 (en) Biomass hydrothermal decomposition apparatus and temperature control method thereof, organic raw material production system using biomass raw material
EP2239236A1 (en) A sludge concentrated dehydration method
CN104030427B (en) Supercritical water oxidation treatment system for printing and dyeing wastewater and sludge
CN103936251B (en) Sludge dewatering system based on thermal hydrolysis technology and sludge dewatering process based on thermal hydrolysis technology
CN103722002B (en) Based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization
CN103030206B (en) Supercritical water treatment device and method
CN101830554B (en) Method for improving oxygen utilization rate of supercritical water oxidation system
KR20160098226A (en) Combined system for producing steel and method for operating the combined system
WO2011082507A1 (en) Resource utilization and harmless treatment for cyanide tailing ore pulp
CN102344234B (en) Printing and dyeing sludge pyrolysis treatment device and sludge treatment method
CN102234170A (en) Method and device for rapidly reducing moisture content of sludge
RU2566997C2 (en) Method and device for hydrolysis of preferably solid organic substrates
CN102642911A (en) Advanced oxidation treatment device and advanced oxidation treatment process of refractory organic wastewater
CN103991992B (en) A kind of preprocess method improving Areca-nut seed cooking wastewater biodegradability
CN104529108B (en) The method of persistence organic pollutant in mud is removed in a kind of anaerobic digestion-Fenton reaction coupling
JP2006274013A (en) Biomass gasification system
CN101759339B (en) Reclamation treatment method of oil field tank bottom oil sludge
CN101209883A (en) Technique for processing coking wastewater or organic wastewater by supercritical water oxidization technique

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20160706