CN1962497A - Sludge drying agent and its preparing method - Google Patents

Sludge drying agent and its preparing method Download PDF

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Publication number
CN1962497A
CN1962497A CN 200610125151 CN200610125151A CN1962497A CN 1962497 A CN1962497 A CN 1962497A CN 200610125151 CN200610125151 CN 200610125151 CN 200610125151 A CN200610125151 A CN 200610125151A CN 1962497 A CN1962497 A CN 1962497A
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China
Prior art keywords
drying agent
sludge drying
metal oxide
sludge
polysaccharide
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CN 200610125151
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Chinese (zh)
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CN100412014C (en
Inventor
童忠尧
杨国录
季光明
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Road Environment Technology Co., Ltd.
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WUHAN LUDE TECHNOLOGIES Co Ltd
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Priority to CNB2006101251515A priority Critical patent/CN100412014C/en
Publication of CN1962497A publication Critical patent/CN1962497A/en
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  • Treatment Of Sludge (AREA)

Abstract

The invention provides a sludge dying agent and its preparing process, wherein the main constituents include metallic oxides Al2O3, Fe2O3, CaO and MgO having active property, non-metallic oxides SiO2, SO3 having active property, SO3 in existence in the form of SO4 2-, petroleum coke, polysaccharide (C6H10O5)n including 25-30% of straight chains and 70-75% of branched chains. The sludge drying agent can be used to conduct rapid fresh sludge dehydration, sterilization and deodorization.

Description

Sludge drying agent and preparation method
Technical field
The present invention relates to sludge disposal is used in a kind of environmental area sludge drying agent and preparation method.
Background technology
The important source of urban environment problem is the harm of the waste of city oneself generation to urban environment.The quality of control and optimization urban environment is then tackled these wastes and is carried out effectively orderly management and disposal, makes it enter environment in the mode with environmentally compatible, promptly via a logistics working cycle that does not damage city physical environment ecological quality.The mud that city oneself produces promptly is a kind of in this class waste.
In order to improve the water surrounding in city, water pollutes and the utilization of realization sewage recycling in order to control, China proposed clear and definite requirement to treatment rate of domestic sewage: by 2010, all establish the city in city, wastewater treatment rate must not be lower than 60%, and the wastewater treatment rate of municipality directly under the Central Government, provincial capital, municipalities and cities with independent plans and scenic tourist city must not be lower than 70%.This makes each big and medium-sized cities build many foul water systems and sewage work in succession, causes the speed increment of municipal sludge with every year 10%.The sharp increase of sludge yield is seriously threatening the quality of life of city human settlements and the sound development of harmonious society.So, how to be implemented under the principle of " innoxious ", " minimizing ", " stabilization ", " resource utilization " mud is disposed, become a top important topic of environmental administration, also become an important subject in the related discipline field simultaneously.
Both at home and abroad the traditional method to sludge disposal is: mud is agricultural, mud landfill and sludge incineration.Or these methods exist secondary pollution hidden danger; Or take valuable land resources; Or there is disadvantages such as needing huge cost and operation investment cost.
How to realize veritably that " innoxious ", " minimizing ", " stabilization ", " resource utilization " of mud dispose, this is the problem extremely paid close attention to of national government department and town dweller just.
Summary of the invention
The present invention provides a kind of sludge drying agent for " innoxious ", " minimizing ", " stabilization ", " resource utilization " disposal that can realize mud veritably.This sludge drying agent has can be made mud separate to coagulate, chain rupture, granulation, make the function in crack, structure properties, water reason characteristic, the physical and mechanical property of mud are nursed one's health, and be that a series of basic condition is built in the profound level dehydration of mud.Then can with moisture 80% left and right sides sludge dewatering to moisture 60%, 50%, 40%, 30%, 25%, 20%, 10%, 5% or below.Sludge drying agent is when making sludge dewatering, and also the mineralising that mud is carried out is in various degree handled.Sludge drying agent also has sterilization and deodorization in disposing former raw sludge process.
A kind of sludge drying agent, its main ingredient is the percentage meter by weight:
The active metal oxide Al of tool 2O 3, Fe 2O 3, CaO, MgO, wherein Al 2O 317.2~36.5%, Fe 2O 34.8~15.4%, CaO 8.5~24.5%, MgO 1.8~4.6%.
The active nonmetal oxide SiO of tool 2, SO 3, SO 3With SO 4 2-Form exists, wherein SiO 233.0~54.9%, SO 30.5~3.5%;
Refinery coke 0~4.8%;
Polysaccharide (C 6H 10O 5) n 0~15.1%, this polysaccharide contains 25~30% straight chains, 70~75 side chain.
A kind of preparation method of sludge drying agent, carry out according to the following steps:
(1) metal oxide and nonmetal oxide are sub-packed in the container, placing frequency is the microwave field radiation heating 3h of 2450 megahertzes; Microwave heating system is as shown in Figure 1:
(2) will in stove, press 1000 ℃ of 1h, 1200 ℃ of 1h, the order roasting of 1450 ℃ of 3h through metal oxide after the carry out microwave radiation heating and nonmetal oxide again;
(3) mix woollen by component of determining and mass component preparation sludge drying agent metal oxide and nonmetal oxide then;
(4) place the grinding machine grinding to specific surface area 〉=400m the sludge drying agent mixing woolen cloth that makes 2/ kg obtains the sludge drying agent work in-process;
(5) last, add refinery coke and polysaccharide by the mass component of determining; Homogenizing promptly obtains the sludge drying agent finished product.
Description of drawings
Fig. 1. be the block diagram of carry out microwave radiation heating metal oxide and nonmetal oxide.
Embodiment
Table 1. is the embodiment of the invention 1~3 raw materials used and proportionings
Raw materials used and the proportioning unit of each embodiment of table 1: %
Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
Metal oxide Al 2O 3 26.5 21.7 17.8 36.5 17.2
Fe 2O 3 6.9 5.6 4.8 4.8 15.4
CaO 9.3 24.5 18.0 8.5 8.5
MgO 1.8 4.6 3.8 1.8 1.8
Nonmetal oxide SiO 2 54.9 40.1 33.0 33.0 43.5
SO 3 0.6 3.5 2.7 0.7 0.5
Refinery coke 0 0 4.8 4.2 3.6
Polysaccharide 0 0 15.1 10.5 9.5
Add up to 100 100 100 100 100
Table 2. is results that the embodiment 1~3 shown in being is raw materials used and proportioning is disposed primary sludge dewatering by table 1.
The table 2 couple result that primary sludge dewatering is disposed (dewatering efficiency, %)
2h is disposed in dehydration 4h is disposed in dehydration 8h is disposed in dehydration 24h is disposed in dehydration
Embodiment 1 19.4 31.3 50.4 92.3
Embodiment 2 25.9 36.1 54.4 93.2
Embodiment 3 22.3 33.1 51.8 93.6
Embodiment 4 23.3 35.1 53.8 93.5
Embodiment 5 24.3 37.1 56.8 93.4
Explanation 1. the each mud of above-mentioned test sampling 40kg 2. tests are disposed the different proportioning of the ratio 5. of 105 ℃ of 4. dewatering efficiency of temperature=" water content that mud is sloughed " and " primary sludge moisture content " for the different resource outlet of mud with the 78.5% 3. test dehydrations of primary sludge moisture content after disposing
The preparation method of sludge drying agent, carry out according to the following steps:
(1) each metal oxide in the above-mentioned table and each nonmetal oxide are sub-packed in the container, placing frequency is the microwave field radiation heating 3h of 2450 megahertzes;
(2) will in stove, press 1000 ℃ of 1h, 1200 ℃ of 1h, the order roasting of 1450 ℃ of 3h through each metal oxide after the carry out microwave radiation heating and each nonmetal oxide again;
(3) mix woollen by component of determining and mass component preparation sludge drying agent each metal oxide and each nonmetal oxide then;
(4) place the grinding machine grinding to specific surface area 〉=400m the sludge drying agent mixing woolen cloth that makes 2/ kg obtains the sludge drying agent work in-process;
(5) last, add refinery coke and polysaccharide by the mass component described in the above-mentioned table; Homogenizing promptly obtains the sludge drying agent finished product.

Claims (2)

1, a kind of sludge drying agent, its main ingredient is the percentage meter by weight:
The active metal oxide Al of tool 2O 3, Fe 2O 3, CaO, MgO, wherein Al 2O 317.2~36.5%, Fe 2O 34.8~15.4%, CaO 8.5~24.5%, MgO 1.8~4.6%.
The active nonmetal oxide SiO of tool 2, SO 3, SO 3With SO 4 2-Form exists, wherein SiO 233.0~54.9%, SO 30.5~3.5%;
Refinery coke 0~4.8%;
Polysaccharide (C 6H 10O 5) n 0~15.1%, this polysaccharide contains 25~30% straight chains, 70~75 side chain.
2, a kind of preparation method of sludge drying agent, carry out according to the following steps:
(1) metal oxide and nonmetal oxide are sub-packed in the container, placing frequency is the microwave field radiation heating 3h of 2450 megahertzes;
(2) will in stove, press 1000 ℃ of 1h, 1200 ℃ of 1h, the order roasting of 1450 ℃ of 3h through metal oxide after the carry out microwave radiation heating and nonmetal oxide again;
(3) mix woollen by component of determining and mass component preparation sludge drying agent metal oxide and nonmetal oxide then;
(4) place the grinding machine grinding to specific surface area 〉=400m the sludge drying agent mixing woolen cloth that makes 2/ kg obtains the sludge drying agent work in-process;
(5) last, add refinery coke and polysaccharide by the mass component of determining; Homogenizing promptly obtains the sludge drying agent finished product.
CNB2006101251515A 2006-11-27 2006-11-27 Sludge drying agent and its preparing method Active CN100412014C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNB2006101251515A CN100412014C (en) 2006-11-27 2006-11-27 Sludge drying agent and its preparing method

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CN1962497A true CN1962497A (en) 2007-05-16
CN100412014C CN100412014C (en) 2008-08-20

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508518B (en) * 2009-03-24 2010-10-06 朱英 Medicament for reducing moisture percentage in sewage sludge
CN102358679A (en) * 2011-09-20 2012-02-22 同济大学 Sludge conditioner, and deep dehydration method by using the same
CN105776816A (en) * 2016-04-14 2016-07-20 武汉美丽东方环保有限公司 Sludge dewatering conditioner and preparing method and application thereof
CN105859065A (en) * 2016-04-14 2016-08-17 武汉美丽东方环保有限公司 Silt solidification conditioning agent and preparation method and application thereof
CN106608709A (en) * 2015-10-27 2017-05-03 禾华环保科技(上海)有限公司 Dehydrating agent for sludge, and preparation and application thereof
CN109293217A (en) * 2018-11-19 2019-02-01 广州珞珈环境技术有限公司 A kind of conditioner and its preparation method and application for sludge dewatering

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1079945A (en) * 1993-06-25 1993-12-29 四川省物资贸易中心应用技术研究所 Inorganic compounded flocculante for water treatment and preparation method thereof
CN1121903A (en) * 1994-08-18 1996-05-08 金钟泰 Strong waterproofing agent for concrete
RU2195434C2 (en) * 2000-11-08 2002-12-27 Санкт-Петербургский государственный университет Coagulant for cleaning natural and waste water, method of production and use of such coagulant

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508518B (en) * 2009-03-24 2010-10-06 朱英 Medicament for reducing moisture percentage in sewage sludge
CN102358679A (en) * 2011-09-20 2012-02-22 同济大学 Sludge conditioner, and deep dehydration method by using the same
CN106608709A (en) * 2015-10-27 2017-05-03 禾华环保科技(上海)有限公司 Dehydrating agent for sludge, and preparation and application thereof
CN105776816A (en) * 2016-04-14 2016-07-20 武汉美丽东方环保有限公司 Sludge dewatering conditioner and preparing method and application thereof
CN105859065A (en) * 2016-04-14 2016-08-17 武汉美丽东方环保有限公司 Silt solidification conditioning agent and preparation method and application thereof
CN109293217A (en) * 2018-11-19 2019-02-01 广州珞珈环境技术有限公司 A kind of conditioner and its preparation method and application for sludge dewatering

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Denomination of invention: Sludge drying agent and its preparing method

Effective date of registration: 20110919

Granted publication date: 20080820

Pledgee: Optics Valley Wuhan venture capital fund Co., Ltd.

Pledgor: Wuhan Lude Technologies Co., Ltd.

Registration number: 2011990000353

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Date of cancellation: 20121015

Granted publication date: 20080820

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Pledgor: Wuhan Lude Technologies Co., Ltd.

Registration number: 2011990000353

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C56 Change in the name or address of the patentee

Owner name: ROAD ENVIRONMENTAL ENVIRONMENTAL TECHNOLOGY CO., L

Free format text: FORMER NAME: WUHAN LUDE TECHNOLOGIES CO., LTD.

CP03 Change of name, title or address

Address after: 430074, Optics Valley Software Park, East Lake Development Zone, Hubei, Wuhan Province, six, 4, 3

Patentee after: Road Environment Technology Co., Ltd.

Address before: 430070 Hubei Province, Wuhan city Hongshan District Luoshi Road No. 517

Patentee before: Wuhan Lude Technologies Co., Ltd.