CN106116083A - The compounding method of municipal sludge - Google Patents

The compounding method of municipal sludge Download PDF

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Publication number
CN106116083A
CN106116083A CN201610514389.0A CN201610514389A CN106116083A CN 106116083 A CN106116083 A CN 106116083A CN 201610514389 A CN201610514389 A CN 201610514389A CN 106116083 A CN106116083 A CN 106116083A
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CN
China
Prior art keywords
municipal sludge
compounding method
mud
moisture content
semi
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
CN201610514389.0A
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Chinese (zh)
Inventor
叶福祥
苏国强
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Xiamen Xiang Teng Garden Science And Technology Co Ltd
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Xiamen Xiang Teng Garden Science And Technology Co Ltd
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Priority to CN201610514389.0A priority Critical patent/CN106116083A/en
Publication of CN106116083A publication Critical patent/CN106116083A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/02Biological treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/02Biological treatment
    • C02F11/04Anaerobic treatment; Production of methane by such processes
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F7/00Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/20Sludge processing
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/40Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Abstract

The compounding method of municipal sludge, relates to municipal sludge and processes.One is provided to process technique simple, it is easy to control and the compounding method of the municipal sludge optimized.Comprise the following steps: 1) in municipal sludge, add commercial microbe bacterium enzyme, remove the abnormal flavour that mud itself produces because of anaerobic-aerobic fermentation;2) by step 1) the municipal sludge dry in the sun that obtains does, and obtains the semi-finished product that moisture content is 35%~40%;3) by step 2) semi-finished product that obtain carry out batch mixing, and batch mixing adds mushroom soil or corn cob, then the revolving drum drier of band reducing mechanism is pulverized and is dried, and obtains the moisture content fertilizer less than 15%.Have employed trapezoid platform+microorganism+mud and do the integrated composite treatment technology of solarization+mixing charging, optimize processing step and parameter, low cost, solve the series of environmental problems that current municipal sludge is difficult and processing cost is high very well.

Description

The compounding method of municipal sludge
Technical field
The present invention relates to municipal sludge process, especially relate to the compounding method of a kind of municipal sludge.
Background technology
Existing method for sludge treatment has landfill, agricultural and burning etc., but all of processing method should meet stabilisation, nothing Evilization, minimizing and strive the principle of resource.Mud is a kind of by groups such as organic relic, bacterial body, inorganic particle and colloids The heterogeneous body become, it is difficult to carry out solid-liquid separation thoroughly by sedimentation.The mud that sewage disposal produces is the most organic Mud, its characteristic is content of organics high (60%~80%), and granule is thin (0.02~0.2mm), density little (1002~ 1006Kg/m3), in colloform texture, it is a kind of hydrophilic mud, easy pipeline carries, but dewatering is poor.Along with sludge water content Minimizing, mud from pure aqueous flow to viscous, plasticity shape, half-dried solid, shaped until this process of pure solid, shaped become Change.Generally concentrate and moisture content can be dropped to 85% (saturation state);Moisture content is when 70%~75%, and mud is soft condition, It is difficult to flowing;The most general dehydration drops to 60%~65% only, now, almost becomes solid;Moisture content low to 35%~ When 40%, become poly-bulk state (being above semi-oriented state);The lowest powdered to 10%~15%.Treatment of Sludge General objective is to ensure that the poisonous and harmful substance in mud, either now can not or all will not cause the mankind and environment in the future The harm accepted.
The U.S. processes the method for mud and mainly recycles, and the ratio of Sludge landfill the most progressively declines, and the U.S. is many Mud landfill has been forbidden in area.Estimating according to EPA, in decades from now on, 6500 landfill yards of the U.S. will 5000 are had to be closed.Agricultural sludge and land landfill were once two kinds of main method of most countries sludge treatment.Agricultural and The selection of land landfill scheme is heavily dependent on the relevant law of national governments, regulation and Environmental capacity situation, simultaneously Also relevant with the size of country and agricultural development situation.In recent years, along with agricultural sludge standard is (such as synthesis of organic substance and heavy metal Content) trend of increasingly stringent, many countries, the ratio of agricultural sludge constantly reduces.The ratio that now environmental protection work is done at present Relatively put in place, the standard that municipal wastewater treatment plant content of beary metal is typically fertile not over afforestation.Sludge landfill characteristics is mainly used In turf plant, plants such as eucalyptus.Growth for plants such as nursery stock, flowers, lawns has important facilitation, can conduct Urban afforestation effective fertility resource;In mud, poisonous and harmful substance does not enter food chain, and that is caused human health is potential Threaten little, it both can have been made to get utilization, chemical fertilizer and usage amount humous can be reduced again, there is good economic benefit And environmental benefit.
Chinese patent CN01115480.2 provides a kind of quick, economic sludge treatment technique, it is characterized in that: at sewage Dewatered sludge and the partially dried mud of reason factory and a certain amount of inorganic fertilizer and adjuvant (when producing compound fertilizer with mud) exist In mixer after Mixed adjustment moisture content, it is continuously added to special screw rod (can be single screw rod or twin screw) extruder grain (bar) In machine (can be vertical or horizontal);When mud not adhesion (moisture content is relatively low) mutually of extrusion, screw extruding can be used to make Grain machine, when mud mutual adhesion (moisture content is higher) of extrusion, can use screw extruding strip making machine (only need to be exported by comminutor Revolving scraper unloads);The outlet of screw extruding pelletize (bar) machine is joined directly together, by turning circle with the entrance of revolving drum drier The mud import of drum drier is suitably increased, and makes a part of high-temperature flue gas in the place exported close to screw extruding pelletize (bar) machine Import wherein, and have certain time of contact in vertical direction with mud;The outlet of screw extruding strip making machine is the most downward; When mud bar is freshly extruded, i.e. contacting with high-temperature flue gas, surface moisture evaporates rapidly, makes the adhesion no longer mutually of mud bar, favorably In drying and dehydrating;From revolving drum drier out after, a part of dewatered sludge mixes with wet mud as returning charge, another part do Mud is as drying the fuel of mud or selling as fertilizer;Through being dried, mud becomes odorless, tasteless, the micro-life of cause of disease therein Thing and parasitic ovum are also killed, it is achieved that innoxious.These processes the most just can complete.
Summary of the invention
Present invention aims to that existing mud is difficult, high in cost of production problem, it is provided that a kind of process technique letter Single, it is easy to control and the compounding method of the municipal sludge optimized.
The present invention comprises the following steps:
1) adding commercial microbe bacterium enzyme in municipal sludge, removal mud itself is different because of anaerobic-aerobic fermentation generation Taste;
2) by step 1) the municipal sludge dry in the sun that obtains does, and obtains the semi-finished product that moisture content is 35%~40%;
3) by step 2) semi-finished product that obtain carry out batch mixing, and batch mixing adds mushroom soil or corn cob, then band is pulverized The revolving drum drier of device is pulverized and is dried, and obtains the moisture content fertilizer less than 15%.
In step 1) in, described municipal sludge can use the municipal sludge that moisture content is not less than 80%, the micro-life of described commercialization Thing bacterium enzyme can use Shangrao City sunlight biological Engineering Co., Ltd of Jiangxi Province SHH potent biological live bacteria agent (http: // china.makepolo.com/product-detail/100174717035.html);The addition of described commercial microbe bacterium enzyme Amount can be 1: 2000 with the mass ratio of municipal sludge.
In step 2) in, described dry in the sun is dry can use outdoor threshing ground or indoor to dry field;It is laid in outdoor threshing ground or indoor The municipal sludge thickness drying field can be 4~5cm;Described outdoor threshing ground can use trapezoid platform threshing ground, adjacent trapezoidal platform Difference in height can be 2~4.5m;Field is dried in described indoor can use cement flooring and plane skylight roof.
In step 3) in, the addition of described mushroom soil can be the 30%~60% of semi-finished product mud by mass percentage, Preferably 50%;The addition of described corn cob can be the 30%~60% of semi-finished product mud by mass percentage, preferably 50%;Institute Stating mushroom soil's water content can be 20%~30%;The moisture content of described corn cob can be 30%~45%.
Present invention employs trapezoid platform+microorganism+mud and do the integrated composite treatment technology of solarization+mixing charging, optimize Processing step and parameter, low cost, solve a series of environment that current municipal sludge is difficult and processing cost is high very well Problem.
Detailed description of the invention
The present invention is further illustrated for following example.
The present invention comprises the following steps:
1) adding commercial microbe bacterium enzyme in municipal sludge, removal mud itself is different because of anaerobic-aerobic fermentation generation Taste;Described municipal sludge can use the municipal sludge that moisture content is not less than 80%, described commercial microbe bacterium enzyme can use Jiangxi SHH potent biological live bacteria agent (the http://china.makepolo.com/ of Shangrao City sunlight biological Engineering Co., Ltd of province product-detail/100174717035.html);The addition of described commercial microbe bacterium enzyme and the quality of municipal sludge Ratio can be 1: 2000.
2) by step 1) the municipal sludge dry in the sun that obtains does, and obtains the semi-finished product that moisture content is 35%~40%;Described dry in the air Dry and outdoor threshing ground or indoor can be used to dry field;It is laid in outdoor threshing ground or to dry the municipal sludge thickness of field can be 4 in indoor ~5cm;Described outdoor threshing ground can use trapezoid platform threshing ground, and the difference in height of adjacent trapezoidal platform can be 2~4.5m;Described indoor Dry field and can use cement flooring and plane skylight roof.
3) by step 2) semi-finished product that obtain carry out batch mixing, and batch mixing adds mushroom soil or corn cob, then band is pulverized The revolving drum drier of device is pulverized and is dried, and obtains the moisture content fertilizer less than 15%.The addition of described mushroom soil is by quality Percentage ratio can be the 30%~60% of semi-finished product mud, preferably 50%;The addition of described corn cob can be by mass percentage The 30%~60% of semi-finished product mud, preferably 50%;Described mushroom soil's water content can be 20%~30%;Described corn cob Moisture content can be 30%~45%.
The municipal sludge more than used is provided by certain Sewage Plant, and the urban domestic sewage sludge data of certain Sewage Plant output are such as Table 1.
Table 1
Test event Measured result
Organic (in terms of butt) (%) 8
Nitrogen (N) (mg/kg) 16100
Phosphorus (P) (mg/kg) 9060
Potassium (K) (mg/kg) 599
Moisture (%) 80
Arsenic (As) (mg/kg) 6.15
Hydrargyrum (Hg) (mg/kg) 0.288
Cadmium (Cd) (mg/kg) 1.8
Lead (Pb) (mg/kg) 2.36
Chromium (Cr) (mg/kg) 38.85
Through multistep treatment, in the open and Indoor Dry threshing ground is done after shining 3~5 days, and its moisture percentage in sewage sludge is down to 35%~40% and is shown Bulk, pushes, through buck raker, mushroom soil (moisture content 25%) or corn cob (moisture content 40%) entrance that material mixing workshop adds 50% With the revolving drum drier of reducing mechanism, trapezoidal threshing ground and workshop that this invention is formed by hillside fields complete, each process Region height difference 4m.
In the present embodiment, conventional NY 525-2011 " organic fertilizer " organic fertilizer index determining experimental result has been carried out As shown in table 2.Test result indicate that this enforcement processes thorough, environmental ecological benefit height, can effectively process municipal sludge.
Table 2
Test event Measured result
Organic (in terms of butt) (%) 31.0
Nitrogen content (in terms of butt) (%) 2.19
Phosphorus content (in terms of butt) (%) 2.73
Potassium content (in terms of butt) (%) 1.06
Moisture (%) 12.3
Arsenic (As) (mg/kg) 5.6
Hydrargyrum (Hg) (mg/kg) 1.1
Cadmium (Cd) (mg/kg) 1.8
Lead (Pb) (mg/kg) 51.9
Chromium (Cr) (mg/kg) 85.9
The mud that summer will often process on concrete floor day by day, mud the most per ton adds the commercialization of 1: 2000 ratio Microbial bacteria enzyme.And it is laid into dry solarization 3~5 days during the thickness fine day of 4~5cm, semi-finished product mud can be completed.
Winter, under the effect of indoor lighting plate, indoor temperature controlled at 35 DEG C of mud under conditions of there is daylighting indoor It is laid into the thickness of 4~5cm, dry solarization more than 3~5 days, semi-finished product mud can be completed.
Semi-finished product mud being carried out batch mixing, adds dry mushroom soil or the corn cob of 50% in batch mixing, band pulverizes dress The revolving drum drier put, the moisture content being dried to 15% can become afforestation fertilizer.

Claims (10)

1. the compounding method of municipal sludge, it is characterised in that comprise the following steps:
1) in municipal sludge, add commercial microbe bacterium enzyme, remove the abnormal flavour that mud itself produces because of anaerobic-aerobic fermentation;
2) by step 1) the municipal sludge dry in the sun that obtains does, and obtains the semi-finished product that moisture content is 35%~40%;
3) by step 2) semi-finished product that obtain carry out batch mixing, add mushroom soil or corn cob, then band reducing mechanism in batch mixing Revolving drum drier pulverize be dried, obtain moisture content less than 15% fertilizer.
2. the compounding method of municipal sludge as claimed in claim 1, it is characterised in that in step 1) in, described municipal sludge Use the moisture content municipal sludge not less than 80%.
3. the compounding method of municipal sludge as claimed in claim 1, it is characterised in that in step 1) in, the micro-life of described commercialization Thing bacterium enzyme uses the SHH potent biological live bacteria agent of Shangrao City sunlight biological Engineering Co., Ltd of Jiangxi Province.
4. the compounding method of municipal sludge as claimed in claim 1, it is characterised in that in step 1) in, the micro-life of described commercialization The addition of thing bacterium enzyme and the mass ratio of municipal sludge are 1: 2000.
5. the compounding method of municipal sludge as claimed in claim 1, it is characterised in that in step 2) in, described dry in the sun is dry adopts Field is dried with outdoor threshing ground or indoor.
6. the compounding method of municipal sludge as claimed in claim 5, it is characterised in that described outdoor threshing ground or indoor are dried On field, the municipal sludge thickness of tiling is 4~5cm.
7. the compounding method of municipal sludge as claimed in claim 5, it is characterised in that described outdoor threshing ground uses trapezoidal flat Platform threshing ground, the difference in height of adjacent trapezoidal platform is 2~4.5m.
8. the compounding method of municipal sludge as claimed in claim 5, it is characterised in that described indoor are dried field and used cement Ground and plane skylight roof.
9. the compounding method of municipal sludge as claimed in claim 1, it is characterised in that in step 3) in, described mushroom soil Addition is the 30%~60% of semi-finished product mud by mass percentage, preferably 50%;Described mushroom soil's water content can be 20%~30%.
10. the compounding method of municipal sludge as claimed in claim 1, it is characterised in that in step 3) in, described corn cob Addition be the 30%~60% of semi-finished product mud by mass percentage, preferably 50%;The moisture content of described corn cob can be 30%~45%.
CN201610514389.0A 2016-07-03 2016-07-03 The compounding method of municipal sludge Pending CN106116083A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110117198A (en) * 2018-02-05 2019-08-13 上海清驰环保工程技术有限公司 Sludge deodorization is dehydrated into the new method of microbial organic bacterial manure
CN114804956A (en) * 2022-05-11 2022-07-29 厦门旺鑫淼资源化利用有限公司 Method for producing forestry controlled release fertilizer by using sludge of municipal sewage plant

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* Cited by examiner, † Cited by third party
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CN103981107A (en) * 2014-06-03 2014-08-13 天津市农业资源与环境研究所 Multifunctional agricultural microbial agent as well as application method and effects thereof
CN104496569A (en) * 2014-11-26 2015-04-08 郑州大学 Biodegradable sludge-compost fermentation conditioning agent and application thereof
CN105110833A (en) * 2015-09-22 2015-12-02 宋春刚 Harm-less fast fermented bio-organic fertilizer and preparation method thereof
CN105384534A (en) * 2015-12-15 2016-03-09 山水园林股份有限公司 Liquid organic biofertilizer and preparation method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110117198A (en) * 2018-02-05 2019-08-13 上海清驰环保工程技术有限公司 Sludge deodorization is dehydrated into the new method of microbial organic bacterial manure
CN114804956A (en) * 2022-05-11 2022-07-29 厦门旺鑫淼资源化利用有限公司 Method for producing forestry controlled release fertilizer by using sludge of municipal sewage plant

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Application publication date: 20161116