CN110372168A - A kind of method of river sludge resource utilization - Google Patents

A kind of method of river sludge resource utilization Download PDF

Info

Publication number
CN110372168A
CN110372168A CN201910613808.XA CN201910613808A CN110372168A CN 110372168 A CN110372168 A CN 110372168A CN 201910613808 A CN201910613808 A CN 201910613808A CN 110372168 A CN110372168 A CN 110372168A
Authority
CN
China
Prior art keywords
sludge
river
resource utilization
added
concentration
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201910613808.XA
Other languages
Chinese (zh)
Inventor
刘洪波
刘国伟
周艳红
应琦琰
张怡
吕弈成
李丛与
孙圣广
徐田斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Shanghai for Science and Technology
Original Assignee
University of Shanghai for Science and Technology
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 University of Shanghai for Science and Technology filed Critical University of Shanghai for Science and Technology
Priority to CN201910613808.XA priority Critical patent/CN110372168A/en
Publication of CN110372168A publication Critical patent/CN110372168A/en
Pending legal-status Critical Current

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
    • C02F11/004Sludge detoxification
    • 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
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C02F11/143Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
    • 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
    • C02F11/14Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C02F11/143Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
    • C02F11/145Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances using calcium compounds
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • C04B33/1321Waste slurries, e.g. harbour sludge, industrial muds
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/32Burning methods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00Specific waste
    • F23G2209/12Sludge, slurries or mixtures of liquids
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/60Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Abstract

The invention discloses a kind of methods of river sludge resource utilization, which comprises the following steps: step 1: taking river sludge, is concentrated in gravity concentration tank;Step 2: flocculant is added in the sludge after concentration, flocculation aid flocculates;Step 3: the sludge after flocculation is passed through ozone and newly carries out deodorization of killing virus for sterilization to sludge;Step 4: in sludge after processing be added chelating type organic matter removal sludge in toxic heavy metal;Step 5: sludge high-drying dehydration;Step 6: sludge being burned, and lime-ash, clay, silica sand is added, soil concrete additive carries out ingredient;Step 7: the sludge after burning being subjected to the compacting of machine coagulation, is allowed to form;Step 8: secondary burning obtains sludge brick.River sludge resource utilization can be achieved in the present invention, solves the problems, such as sludge treatment, and have economic benefit, and protect environment.

Description

A kind of method of river sludge resource utilization
Technical field
The present invention relates to a kind of methods of river sludge resource utilization, belong to river water quality guarantee and recycling sludge skill Art field.
Background technique
With the development of the society, industrial expansion, environmental protection is extremely urgent.The water head sites such as reservoir, river, lake Substantial pollution situation occurs, pollutant enters river, make a large amount of pollutions difficult to degrade by sewage discharge, the modes such as rainwater drop leaching Object is assembled in river sludge, so that pollution of estuary, fish are dead.Water environment pollution is mainly reflected in following several respects: first, by It is too big to pollute water quality proportion, has seriously affected human normal life.Second, flow through the section in cities and towns, the combination area of city and country The pollution of some irrigation canals and ditches it is universal higher, organic contamination is serious, and black and odorous water is more, and the impacted masses are more.Third, drinking water safety Problem layer does not stop out, and water body self-purification ability is limited, and treated, and water quality is not up to national standard." water prevention and cure of pollution action plan " It regard river sludge processing as key project, river sludge resource utilization is even more the difficulties in emphasis.Dirt in sludge It contaminates there are mainly three types of objects, first is that the substances such as all kinds of heavy metals, including mercury, copper, zinc, cadmium.It is toxic organic in sludge second is that organic matter Object reaches a certain concentration by enrichment, generates harm to the mankind and animals and plants.Third is that nitrogen phosphorus rich nutritive material, leads to water body Eutrophication, it is dead so as to cause a large amount of fish.It therefore, is necessary to the resource utilization of river sludge.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of methods of river sludge resource utilization to realize river sludge resource Change and utilizes.
To solve the above-mentioned problems, the present invention provides a kind of methods of river sludge resource utilization, which is characterized in that The following steps are included:
Step 1: taking river sludge, be concentrated in gravity concentration tank;
Step 2: flocculant is added in the sludge after concentration, flocculation aid flocculates;
Step 3: the sludge after flocculation is passed through ozone and carries out deodorization of killing virus for sterilization to sludge;
Step 4: removing toxic heavy metal in sludge to chelating type organic matter (EDTA) is added in sludge after processing;
Step 5: sludge high-drying dehydration;
Step 6: sludge being burned, and lime-ash, clay, silica sand is added, soil additive carries out ingredient;
Step 7: the sludge after burning being subjected to the compacting of machine coagulation, is allowed to form;
Step 8: secondary burning obtains sludge brick.
Preferably, in the step 1, concentration time 12h, by moisture percentage in sewage sludge (unit mass sludge contained humidity Quality) 96wt% is down to hereinafter, bed mud concentration is 12~27g/L after concentration.
Preferably, flocculant is ferrate in the step 2, and the mass ratio of ferrate and the sludge after concentration is 0.12~0.18:1, flocculation reaction time are 5~10min.
Preferably, flocculation aid is calcium chloride, 280~320mg/L of calcium chloride dosage in the step 2.
Preferably, in the step 4 chelating type organic matter (EDTA) additional amount be 3~5g/L, the reaction time be 15~ 25min;To reach a large amount of removal toxic heavy metals such as iron, zinc, chromium etc., heavy metal is made to be stabilized use in sludge to the mankind The harm of animals and plants.
Preferably, water content is down to 50wt% or less in high level cadre's dehydrated sludge in the step 5.
Preferably, sludge in the step 6, lime-ash, clay, silica sand mass ratio be 5:100:50:17, soil additive For concrete additive, additional amount is that 2-4Kg concrete additive is added in sludge per ton, and concrete additive is added and makes the structure of brick more steady It is fixed.
Preferably, incineration temperature is 1050~1075 DEG C in the step 8.
River sludge resource utilization includes three big columns: first is that pretreatment, second is that deep dehydration, third is that the money of sludge Sourceization utilizes.Front-end processing mainly carries out conditioning modification to sludge with flocculant, carries out sterilization antivirus to sludge using ozone, The toxic heavy metal in sludge is reduced using chelating type organic matter, so that sludge becomes harmless to humansization.Deep dehydration is then It is that deep dehydration is carried out to sludge using high level cadre's dehydration technique and incineration technology.Recycling sludge is then using brick-baking kiln to sludge It is burned, ingredient is added in sludge, sludge is made to become brick, to there is the utilization of recycling, on the one hand protect ring Border, another facilitate have saved resource.This part is modified according to claim, but cannot be just the same, to be expanded.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) harmless treatment of the achievable river sludge of the present invention;Solve sludge smell, heavy metal pollution problem, really Safety of sludge brick during producing, selling and uying is protected.
(2) present invention achievable river sludge resource utilization solves after river sludge is by above-mentioned treatment process Sludge treatment problem, and have economic benefit, and protect environment.
(3) present invention uses high level cadre's dehydration technique, reduces a large amount of burning heats, reduces the waste of resource.
Detailed description of the invention
Fig. 1 is process schematic representation of the invention.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited Range.
Embodiment 1
A kind of method for present embodiments providing river sludge resource utilization, as shown in Figure 1, specifically including following step It is rapid:
(1) river sludge that channel cleanout dredging generates is placed in gravitational settling in concentration basin to be concentrated, sludge is dense after concentration Degree is 21g/L;
(2) novel ferrate (Guangzhou Hao Feng Chemical Co., Ltd.) is added in the sludge after concentration to flocculate, is added Amount is (the ratio between with sludge condensation amount) 0.18:1, and flocculation aid calcium chloride (general virtuous environmental protection) 280mg/L help is added and flocculates, flocculation is anti- 5min is answered, reaction is completed;
(3) it is passed through ozone 150mg/g, antivirus sterilization is carried out to sludge;
(4) chelating type organic matter (EDTA) (rich and prosperous Fine Chemical Co., Ltd, Suzhou City) is added by 3g/L to eliminate in sludge Heavy metal reacts 20min under room temperature;
(5) sludge high-drying is dehydrated, so that sludge moisture content is reduced to 50wt%;
(6) sludge is burned, and lime-ash, clay, silica sand is added, sludge: lime-ash: clay: the mass ratio of silica sand is 3Kg concrete additive is separately added in 5:100:50:17, sludge per ton;
(7) sludge after burning is subjected to the compacting of machine coagulation, is allowed to form;
(8) secondary burning, incineration temperature are about 1000 DEG C, burn 3h, obtain sludge brick.
Embodiment 2
A kind of method for present embodiments providing river sludge resource utilization, as shown in Figure 1, specifically including following step It is rapid:
(1) river sludge that channel cleanout dredging generates is placed in gravitational settling in concentration basin to be concentrated, sludge is dense after concentration Degree is 27g/L;
(2) novel ferrate (Guangzhou Hao Feng Chemical Co., Ltd.) is added in the sludge after concentration to flocculate, is added Amount is (the ratio between with sludge condensation amount) 0.12:1, and flocculation aid calcium chloride (general virtuous environmental protection) 280mg/L help is added and flocculates, flocculation is anti- 5min between seasonable, reaction are completed;
(3) it is passed through ozone 150mg/g, antivirus sterilization is carried out to sludge;
(4) chelating type organic matter (EDTA) (rich and prosperous Fine Chemical Co., Ltd, Suzhou City) is added by 4g/L to eliminate in sludge Heavy metal reacts 25min under room temperature;
(5) sludge high-drying is dehydrated, so that sludge moisture content is reduced to 50wt%;
(9) sludge is burned, and lime-ash, clay, silica sand is added, sludge: lime-ash: clay: the mass ratio of silica sand is 3Kg concrete additive is separately added in 5:100:50:17, sludge per ton;
(6) sludge after burning is subjected to the compacting of machine coagulation, is allowed to form;
(7) secondary burning, incineration temperature are about 1055 DEG C, burn 3 hours, obtain sludge brick.
Analysis of experimental results:
In embodiment 1, sludge condensation concentration be 21g/L, but need ferrate dosage be (with sludge condensation amount it Than) 0.18:1, final products effect, such as brick porosity is but not as good as sludge condensation concentration 27g/L in embodiment 2, ferric acid Salt dosage is (the ratio between with sludge condensation amount) experiment effect of 0.12:1, is shown after chelating agent is added using atomic absorption method Except metal rate is of little difference, the 80% of original heavy metal is removed, so chelating type organic matter throwing amount is about 3-5g/L, burns temperature In comparison, the extra embodiment 1 of the brick internal voids that embodiment 2 is burnt out, water absorption rate is bigger, so firing temperature is for degree 1050-1075 DEG C is advisable.

Claims (7)

1. a kind of method of river sludge resource utilization, which comprises the following steps:
Step 1: taking river sludge, be concentrated in gravity concentration tank;
Step 2: flocculant is added in the sludge after concentration, flocculation aid flocculates;
Step 3: the sludge after flocculation is passed through ozone and carries out deodorization of killing virus for sterilization to sludge;
Step 4: in sludge after processing be added chelating type organic matter removal sludge in toxic heavy metal;
Step 5: sludge high-drying dehydration;
Step 6: sludge being burned, and lime-ash, clay, silica sand is added, soil concrete additive carries out ingredient;
Step 7: the sludge after burning being subjected to the compacting of machine coagulation, is allowed to form;
Step 8: secondary burning obtains sludge brick.
2. the method for river sludge resource utilization as described in claim 1, which is characterized in that concentration time in the step 1 For 12h, moisture percentage in sewage sludge is down to 96wt% hereinafter, bed mud concentration is 12~27g/L after concentration.
3. the method for river sludge resource utilization as described in claim 1, which is characterized in that flocculant is in the step 2 The mass ratio of sludge after ferrate, ferrate and concentration is 0.12~0.18:1, and the flocculation reaction time is 5~10min.
4. the method for river sludge resource utilization as described in claim 1, which is characterized in that flocculation aid is in the step 2 Calcium chloride, 280~320mg/L of calcium chloride dosage.
5. the method for river sludge resource utilization as described in claim 1, which is characterized in that there is chelating type in the step 4 The additional amount of machine object is 3~5g/L, and the reaction time is 15~25min.
6. the method for river sludge resource utilization as described in claim 1, which is characterized in that sludge, ash in the step 6 Slag, clay, silica sand mass ratio be 5:100:50:17, soil concrete additive be concrete additive, additional amount be sludge per ton be added 2-4Kg concrete additive.
7. the method for river sludge resource utilization as described in claim 1, which is characterized in that incineration temperature in the step 8 It is 1050~1075 DEG C.
CN201910613808.XA 2019-07-09 2019-07-09 A kind of method of river sludge resource utilization Pending CN110372168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910613808.XA CN110372168A (en) 2019-07-09 2019-07-09 A kind of method of river sludge resource utilization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910613808.XA CN110372168A (en) 2019-07-09 2019-07-09 A kind of method of river sludge resource utilization

Publications (1)

Publication Number Publication Date
CN110372168A true CN110372168A (en) 2019-10-25

Family

ID=68252485

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910613808.XA Pending CN110372168A (en) 2019-07-09 2019-07-09 A kind of method of river sludge resource utilization

Country Status (1)

Country Link
CN (1) CN110372168A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111253177A (en) * 2019-12-30 2020-06-09 上海方合正环境工程科技股份有限公司 Method for preparing compound organic fertilizer by using river sludge
CN114477673A (en) * 2022-01-21 2022-05-13 中铁水利水电规划设计集团有限公司 River sludge resource utilization treatment method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005007250A (en) * 2003-06-17 2005-01-13 Fumiyoshi Yoshioka Sludge treatment apparatus and sludge treatment method
CN101693590A (en) * 2009-10-12 2010-04-14 天津生态城环保有限公司 Heavy metal polluted sludge treatment method
CN102051943A (en) * 2009-11-09 2011-05-11 广东绿由环保科技股份有限公司 Sintered light environmental-friendly brick produced by using municipal sludge and manufacture method thereof
CN105731743A (en) * 2016-03-07 2016-07-06 武汉市政工程设计研究院有限责任公司 Comprehensive treatment system for urban lake pollution sludge
US10034461B2 (en) * 2015-05-21 2018-07-31 Atlantic Sapphire IP, L.L.C. Systems and methods of intensive recirculating aquaculture
CN109160703A (en) * 2018-09-17 2019-01-08 郑州国研环保科技有限公司 A kind of riverway sludge ecology recycling administering method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005007250A (en) * 2003-06-17 2005-01-13 Fumiyoshi Yoshioka Sludge treatment apparatus and sludge treatment method
CN101693590A (en) * 2009-10-12 2010-04-14 天津生态城环保有限公司 Heavy metal polluted sludge treatment method
CN102051943A (en) * 2009-11-09 2011-05-11 广东绿由环保科技股份有限公司 Sintered light environmental-friendly brick produced by using municipal sludge and manufacture method thereof
US10034461B2 (en) * 2015-05-21 2018-07-31 Atlantic Sapphire IP, L.L.C. Systems and methods of intensive recirculating aquaculture
CN105731743A (en) * 2016-03-07 2016-07-06 武汉市政工程设计研究院有限责任公司 Comprehensive treatment system for urban lake pollution sludge
CN109160703A (en) * 2018-09-17 2019-01-08 郑州国研环保科技有限公司 A kind of riverway sludge ecology recycling administering method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
杨作清等: "《钢铁工业水处理实用技术与应用》", 30 June 2015, 冶金工业出版社 *
杨春平等: "《废水处理原理》", 31 December 2012, 湖南大学出版社 *
路景玲等: "螯合剂处理重金属污染底泥研究进展", 《环境保护科学》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111253177A (en) * 2019-12-30 2020-06-09 上海方合正环境工程科技股份有限公司 Method for preparing compound organic fertilizer by using river sludge
CN114477673A (en) * 2022-01-21 2022-05-13 中铁水利水电规划设计集团有限公司 River sludge resource utilization treatment method

Similar Documents

Publication Publication Date Title
Ahmad et al. Sustainable management of water treatment sludge through 3 ‘R’concept
Aluko et al. Characterization of leachates from a municipal solid waste landfill site in Ibadan, Nigeria
Hunce et al. Solidification/stabilization of landfill leachate concentrate using different aggregate materials
CN104003676A (en) Sludge-zeolite water purification type ecological concrete and preparation method thereof
CN102070352A (en) Method for recycling dewatered sludge, channel sediment and fly ash
WO2018032831A1 (en) Residual soil regeneration processing system for contaminated bottom mud in rivers and lakes
CN105417928B (en) A method of using Fenton sludge to municipal sludge dehydrated in situ
CN110372168A (en) A kind of method of river sludge resource utilization
Zoubeir et al. The use of the Novosol process for the treatment of polluted marine sediment
CN104478055B (en) Sewage disposal complexing agent, its preparation method and methods for using them
CN102941209A (en) Method for curing dredged sludge by doping incinerated bottom ash of domestic garbage
CN107586003A (en) Sludge treating agent and method for sludge treatment
Youcai et al. Pollution Control and Resource Recovery: Sewage Sludge
CN107235709A (en) A kind of method that incineration of refuse flyash is granulated with sludge mixing low temp
CN205328831U (en) River sediment heavy metal pollution's device is handled to normal position
CN105645815B (en) A kind of processing method of incineration of refuse flyash and application
CN108435126A (en) A kind of dregs composite decoloration dephosphorization material and its forming method
CN106430598A (en) Ecological protection slope for restoring and controlling black and odorous water body
CN110668747A (en) Recycled regeneration material for treating polluted bottom mud and preparation method thereof
TW201912209A (en) Method for stabilizing MSWI fly ash
JPS59147700A (en) Treatment of sludge
CN105502636A (en) Method for treating rural domestic sewage by using waste foamed concrete
Li et al. Temporal and spatial distribution patterns of heavy metals in soil at a long-standing sewage farm
JP2004269822A (en) Process for preparing calcium sulfide-based heavy metal fixing agent
Kumar et al. Utilization of incineration ash as a construction material: A review

Legal Events

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

Application publication date: 20191025

RJ01 Rejection of invention patent application after publication