CN103641285A - Conditioning agent for sludge treatment and method for sludge treatment by using same - Google Patents
Conditioning agent for sludge treatment and method for sludge treatment by using same Download PDFInfo
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- CN103641285A CN103641285A CN201310622160.5A CN201310622160A CN103641285A CN 103641285 A CN103641285 A CN 103641285A CN 201310622160 A CN201310622160 A CN 201310622160A CN 103641285 A CN103641285 A CN 103641285A
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- mud
- sludge treatment
- reodorant
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Abstract
The invention relates to a conditioning agent for sludge treatment. The conditioning agent comprises a deodorant and a curing agent, wherein the deodorant comprises the following raw materials in percentage by weight: 25-70% of FeCl2, 5-50% of fly ash and 1-25% of sodium chloride; the curing agent comprises the following raw materials in percentage by weight: 20-60% of cement, 5-40% of fly ash or coal powder, 20-60% of magnesium oxide, 5-40% of sodium chloride, 5-40% of calcium oxide and 5-40% of gypsum. The water content in sludge after treatment is relatively low and the sludge can be directly used for incineration, composting and building.
Description
Technical field
The invention belongs to technical field of sludge treatment, be specifically related to a kind of amendment for sludge treatment and carry out the method for sludge treatment with it.
Background technology
The solid precipitation material that mud is produced by water and sewage treatment process forms, and contain a large amount of organism, heavy metal and pathogenic bacteria etc., and taste is unpleasant, and if do not add, does not process discharge arbitrarily, can cause serious pollution to environment.The general water ratio of mud that factory discharges is high, reaches more than 95%.At present, the water ratio that many employings reduce mud both at home and abroad reaches the object of decrement.And in order to improve the curing performance of mud, mud carries out before machinery solidifies needing evenly to add appropriate organic high molecular polymer acrylamide (PAM) to reduce sludge specific resistance, make it be easy to solidify.Can have like this some problems: PAM is a kind of toughness slurry, easily be attached to and on filter cloth, block filter opening, the effect that impact is filtered, cause mud granule cured glue shape particle coated, form the clad structure of polyacrylamide, not soluble, just as mud outside, there is one deck shell, be unfavorable for that mud further processes, and can not effectively remove stink.In addition, the monomer of solidifying agent polyacrylamide is toxic, difficult degradation, has secondary pollution problem, and the moisture percentage in sewage sludge higher (generally in 80% left and right) after processing.The inorganic polymer of take in Chinese patent CN1621371 solidifies 40～90 parts of amendments, organic polymer solidifies 0.5～12 part of amendment, 5～55 portions of a kind of efficient amendments that solidify that make as raw material of lime powder.The shortcoming of this amendment is to solidify amendment treatment effect when better, and it is high that organic polymer solidifies amendment content, and cost is higher; Follow-up sludge cake recycling difficulty.Therefore, be badly in need of at present research and development a kind of efficient, pollution-free, cheap for the curing amendment of sludge deodorization, thereby effectively reduce the water ratio of mud and remove stink.
Summary of the invention
It is a kind of efficient, pollution-free, cheap for the curing amendment of sludge deodorization and carry out the method for sludge treatment with it that the object of the invention is to provide.
For achieving the above object, the technique means that the present invention adopts is, a kind of amendment for sludge treatment, comprises reodorant and solidifying agent, and described reodorant is comprised of the raw material of following weight percent: FeCl
225～70%, flyash 5～50%, sodium-chlor 1～25%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20～60%, flyash or coal dust 5～40%, magnesium oxide 20～60%, sodium-chlor 5～40%, calcium oxide 5～40%, gypsum 5～40%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 2～8min, add again solidifying agent and stir 2～8min to obtain slurry, after slurry is stirred, stack 2～5 days.
Preferably, in mud dry weight, the addition of reodorant is mud dry weight 5～12%, and the addition of solidifying agent is mud dry weight 25～60%.
Described flyash also can substitute with coal dust.After coal dust firing, be flyash, both select the purposes after Main Basis sludge treatment, if need burning generally to select coal dust after sludge treatment; If do not need burn processing after sludge treatment, generally do not select flyash.
The beneficial effect that the present invention produces is, by adding the chemical amendment of a small amount of low cost, high-efficiency high-quality to carry out chemical treatment to mud, utilize the character of the synergy change mud granule of reodorant and solidifying agent, make mud can be low-cost, solidify fast, after solidifying, the water ratio of mud is 45～60%.Method simple and fast, makes sludge treatment reach real minimizing, greatly reduces the cost of mud subsequent disposal.Can not cause secondary pollution, also can not change the character of mud, the moisture percentage in sewage sludge after processing is lower, can be directly used in burning, compost, building etc.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described, but protection scope of the present invention is not limited to this.
In following examples, cement used is 42.5 grades of ordinary Portland cements that Zhengzhou Tianrui Cement Co., Ltd produces.
Embodiment 1
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
225%, flyash 50%, sodium-chlor 25%; Described solidifying agent is comprised of the raw material of following weight percent: cement 40%, flyash 5%, magnesium oxide 40%, sodium-chlor 5% and calcium oxide 5%, gypsum 5%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 2min with stirrer, the weight that reodorant adds is mud dry weight 5%; Add again solidifying agent and stir 2min and obtain slurry, the weight that solidifying agent adds is 50% of mud dry weight, after being stirred with stirrer, stacks 2 days in slurry, after processing, moisture percentage in sewage sludge reaches 60%, ultimate compression strength 0.21MPa, heavy metal Zn leaching yield is 2.19mg/kg (GB is 100mg/kg), and Cu leaching yield is 68.52mg/kg (GB is 100mg/kg), and Cr leaching yield is 3.08mg/kg (GB is 15mg/kg).
Embodiment 2
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
250%, flyash 49%, sodium-chlor 1%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20%, coal dust 30%, magnesium oxide 20%, sodium-chlor 10% and calcium oxide 10%, gypsum 10%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 8min with stirrer, the weight that reodorant adds is mud dry weight 15%; Add again solidifying agent and stir 8min and obtain slurry, the weight that solidifying agent adds is 25% of mud dry weight, after being stirred with stirrer, stacks 5 days in slurry, moisture percentage in sewage sludge after processing reaches 40%, ultimate compression strength 0.4MPa, heavy metal Zn leaching yield is 1.37mg/kg (GB is 100mg/kg), and Cu leaching yield is 23.86mg/kg (GB is 100mg/kg), and Cr leaching yield is 1.08mg/kg (GB is 15mg/kg).
Embodiment 3
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
270%, flyash 5%, sodium-chlor 25%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20%, coal dust 5%, magnesium oxide 60%, sodium-chlor 5%, calcium oxide 5%, gypsum 5%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 5min with stirrer, the weight that reodorant adds is mud dry weight 7%; Add again solidifying agent and stir 5min and obtain slurry, the weight that solidifying agent adds is 35% of mud dry weight, after being stirred with stirrer, stacks 4 days in slurry, moisture percentage in sewage sludge after processing reaches 50%, ultimate compression strength 0.305MPa, heavy metal Zn leaching yield is 1.83mg/kg (GB is 100mg/kg), and Cu leaching yield is 46.63mg/kg (GB is 100mg/kg), and Cr leaching yield is 2.16mg/kg (GB is 15mg/kg).
Embodiment 4
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
260%, flyash 30%, sodium-chlor 10%; Described solidifying agent is comprised of the raw material of following weight percent: cement 60%, flyash 5%, magnesium oxide 20%, sodium-chlor 5%, calcium oxide 5%, gypsum 5%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 6min with stirrer, the weight that reodorant adds is mud dry weight 6%; Add again solidifying agent and stir 6min and obtain slurry, the weight that solidifying agent adds is 40% of mud dry weight, after being stirred with stirrer, stacks 3 days in slurry, after processing mud water ratio reach 55%, ultimate compression strength 0.272MPa, heavy metal Zn leaching yield is 2.02mg/kg (GB is 100mg/kg), and Cu leaching yield is 53.26mg/kg (GB is 100mg/kg), and Cr leaching yield is 2.53mg/kg (GB is 15mg/kg).
Embodiment 5
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
255%, flyash 35%, sodium-chlor 10%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20%, flyash 5%, magnesium oxide 20%, sodium-chlor 40%, calcium oxide 5%, gypsum 10%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 3min with stirrer, the weight that reodorant adds is mud dry weight 8%; Add again solidifying agent and stir 3min and obtain slurry, the weight that solidifying agent adds is 30% of mud dry weight, after being stirred with stirrer, stacks 4 days in slurry, after processing, the water ratio of mud reaches 45%, ultimate compression strength 0.343MPa, heavy metal Zn leaching yield is 1.58mg/kg (GB is 100mg/kg), and Cu leaching yield is 34.7mg/kg (GB is 100mg/kg), and Cr leaching yield is 1.62mg/kg (GB is 15mg/kg).
Embodiment 6
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
235%, flyash 45%, sodium-chlor 20%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20%, flyash 5%, magnesium oxide 60%, sodium-chlor 5%, calcium oxide 5%, gypsum 5%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 7min with stirrer, the weight that reodorant adds is mud dry weight 10%; Add again solidifying agent and stir 3min and obtain slurry, the weight that solidifying agent adds is 35% of mud dry weight, after being stirred with stirrer, stacks 4 days in slurry, after processing, the water ratio of mud reaches 42%, ultimate compression strength 0.31MPa, heavy metal Zn leaching yield is 1.46mg/kg (GB is 100mg/kg), and Cu leaching yield is 29mg/kg (GB is 100mg/kg), and Cr leaching yield is 1.34mg/kg (GB is 15mg/kg).
Embodiment 7
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
237%, flyash 45%, sodium-chlor 18%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20%, flyash 5%, magnesium oxide 20%, sodium-chlor 5%, calcium oxide 40%, gypsum 10%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 7min with stirrer, the weight that reodorant adds is mud dry weight 7%; Add again solidifying agent and stir 3min and obtain slurry, the weight that solidifying agent adds is 50% of mud dry weight, after being stirred with stirrer, stacks 4 days in slurry, after processing, the water ratio of mud reaches 47%, ultimate compression strength 0.325MPa, heavy metal Zn leaching yield is 1.71mg/kg (GB is 100mg/kg), and Cu leaching yield is 40.5mg/kg (GB is 100mg/kg), and Cr leaching yield is 1.84mg/kg (GB is 15mg/kg).
Embodiment 8
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
270%, flyash 20%, sodium-chlor 10%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20%, flyash 5%, magnesium oxide 20%, sodium-chlor 5%, calcium oxide 10%, gypsum 40%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 4min with stirrer, the weight that reodorant adds is mud dry weight 9%; Add again solidifying agent and stir 5min and obtain slurry, the weight that solidifying agent adds is 60% of mud dry weight, after being stirred with stirrer, stacks 3 days in slurry, after processing, the water ratio of mud reaches 52%, ultimate compression strength 0.284MPa, heavy metal Zn leaching yield is 1.92mg/kg (GB is 100mg/kg), and Cu leaching yield is 49.8mg/kg (GB is 100mg/kg), and Cr leaching yield is 2.33mg/kg (GB is 15mg/kg).
Embodiment 9
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
255%, flyash 30%, sodium-chlor 15%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20%, coal dust 5%, magnesium oxide 20%, sodium-chlor 5%, calcium oxide 25%, gypsum 25%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 4min with stirrer, the weight that reodorant adds is mud dry weight 9%; Add again solidifying agent and stir 5min and obtain slurry, the weight that solidifying agent adds is 40% of mud dry weight, after being stirred with stirrer, stacks 3 days in slurry, after processing, the water ratio of mud reaches 57%, ultimate compression strength 0.25MPa, heavy metal Zn leaching yield is 2.09mg/kg (GB is 100mg/kg), and Cu leaching yield is 55.9mg/kg (GB is 100mg/kg), and Cr leaching yield is 2.75mg/kg (GB is 15mg/kg).
Embodiment 10
For an amendment for sludge treatment, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
255%, flyash 30%, sodium-chlor 15%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20%, flyash 25%, magnesium oxide 10%, sodium-chlor 25%, calcium oxide 5%, gypsum 15%.
Use the above-mentioned amendment for sludge treatment to carry out the method for sludge treatment, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant and stir 4min with stirrer, the weight that reodorant adds is mud dry weight 9%; Add again solidifying agent and stir 5min and obtain slurry, the weight that solidifying agent adds is 60% of mud dry weight, after being stirred with stirrer, stacks 3 days in slurry, after processing, the water ratio of mud reaches 42%, ultimate compression strength 0.33MPa, heavy metal Zn leaching yield is 1.49mg/kg (GB is 100mg/kg), and Cu leaching yield is 30.1mg/kg (GB is 100mg/kg), and Cr leaching yield is 1.33mg/kg (GB is 15mg/kg).
Claims (3)
1. for an amendment for sludge treatment, it is characterized in that, comprise reodorant and solidifying agent, described reodorant is comprised of the raw material of following weight percent: FeCl
225～70%, flyash or coal dust 5～50%, sodium-chlor 1～25%; Described solidifying agent is comprised of the raw material of following weight percent: cement 20～60%, flyash or coal dust 5～40%, magnesium oxide 20～60%, sodium-chlor 5～40%, calcium oxide 5～40%, gypsum 5～40%.
2. a method of carrying out sludge treatment with the amendment for sludge treatment claimed in claim 1, it is characterized in that, comprise the following steps: by the pre-treatment of mud process, the water ratio that makes mud is 80%, then in mud, add reodorant to stir 2～8min, add again solidifying agent and stir 2～8min to obtain slurry, after slurry is stirred, stack 2～5 days.
3. the amendment for sludge treatment as claimed in claim 2 carries out the method for sludge treatment, it is characterized in that, in mud dry weight, the addition of reodorant is mud dry weight 5～12%, and the addition of solidifying agent is mud dry weight 25～60%.
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Cited By (8)
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| CN105174667A (en) * | 2015-09-10 | 2015-12-23 | 潘福昆 | Sludge deodorizing agent |
| CN105693068A (en) * | 2014-11-26 | 2016-06-22 | 池州灵芝化建材料科技有限公司 | Efficient sludge conditioner |
| CN107673572A (en) * | 2017-09-27 | 2018-02-09 | 武汉鹏森环境科技有限公司 | A kind of dirty sludge curing agent and its application |
| WO2018032810A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Composite material for treating, conditioning, and remediating contaminated river or lake sediment, and manufacturing method thereof |
| CN108678119A (en) * | 2018-05-01 | 2018-10-19 | 蒋里军 | The processing and utilization of urban night soil |
| CN109320050A (en) * | 2018-12-11 | 2019-02-12 | 北京舞鹤环境工程设计有限公司 | A kind of conditioner and preparation method and application suitable for municipal sludge recycling |
| CN111453960A (en) * | 2019-01-18 | 2020-07-28 | 宝山钢铁股份有限公司 | Sludge conditioner for water treatment of steel plant and use method thereof |
| CN113149607A (en) * | 2021-04-14 | 2021-07-23 | 天津城建大学 | Sludge brick heavy metal curing agent, sludge brick and preparation method of sludge brick |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105693068A (en) * | 2014-11-26 | 2016-06-22 | 池州灵芝化建材料科技有限公司 | Efficient sludge conditioner |
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| WO2018032810A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Composite material for treating, conditioning, and remediating contaminated river or lake sediment, and manufacturing method thereof |
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| CN108678119A (en) * | 2018-05-01 | 2018-10-19 | 蒋里军 | The processing and utilization of urban night soil |
| CN109320050A (en) * | 2018-12-11 | 2019-02-12 | 北京舞鹤环境工程设计有限公司 | A kind of conditioner and preparation method and application suitable for municipal sludge recycling |
| CN111453960A (en) * | 2019-01-18 | 2020-07-28 | 宝山钢铁股份有限公司 | Sludge conditioner for water treatment of steel plant and use method thereof |
| CN113149607A (en) * | 2021-04-14 | 2021-07-23 | 天津城建大学 | Sludge brick heavy metal curing agent, sludge brick and preparation method of sludge brick |
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