CN1228260C - Active sludge carbon and its making method and use - Google Patents
Active sludge carbon and its making method and use Download PDFInfo
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- CN1228260C CN1228260C CN 03113270 CN03113270A CN1228260C CN 1228260 C CN1228260 C CN 1228260C CN 03113270 CN03113270 CN 03113270 CN 03113270 A CN03113270 A CN 03113270A CN 1228260 C CN1228260 C CN 1228260C
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Abstract
The present invention relates to active sludge carbon which is prepared from active sludge which is treated at the high temperature of 200 to 700 DEG C. The active sludge is generated in the process that microbial treatment is carried out to domestic sewage or industrial sewage to achieve the discharging standard and has the main components of microbes and the metabolism products of the microbes. The density of the active sludge carbon passing through a 200 mesh sieve of the present invention is from 0.5 to 0.6 g/cm<3> and the methylene blue absorption capacity is from 10 to 11 mg/g, which indicate that the active sludge carbon of the present invention has favourable active carbon performance and can be used as the fillers of plastics.
Description
One, technical field
The present invention relates to the active sludge after the sewage biochemical treatment.
Two, background technology
The processing of solid waste is current one of great environmental pollution anxious to be solved and problem of environment protection of facing both at home and abroad with disposing, and particularly sanitary sewage and trade effluent produce a large amount of active sludge in the biochemical treatment process.According to estimates, nearly about 100,000,000 tons of the annual active mud content that produces of present domestic sewage biochemical treatment, only the southern Jiangsu province city in the biochemical treatment process of dyeing and printing the annual active mud content that produces just up to 400,000 tons about, therefore, how to handle effectively with dispose biochemical processing procedure of sewage in the active sludge that produces become important subject that department such as various places environmental protection, urban construction and relevant colleges and universities, scientific and technological unit pay close attention to and urgently wished the difficult problem that solves.Better simply burying method is adopted at present domestic processing to active sludge mostly, to the regeneration of active sludge, carries out the resource utilization monographic study and still is not reported.
Three, summary of the invention
The objective of the invention is to become active sludge and be useful resource, it is prepared into the active sludge charcoal with activated carbon property, and the preparation method of active sludge charcoal and the purposes of active sludge charcoal are provided.
Technical scheme of the present invention is as follows:
A kind of active sludge charcoal, it is the active sludge charcoal that is made through 200～700 ℃ of pyroprocessing by active sludge.Active sludge is the active sludge that sanitary sewage or trade effluent produce in the microbiological treatment process for reaching emission standard, and its major ingredient is microorganism and metabolism product thereof.The particle volume density of the active sludge charcoal of mistake 200 eye mesh screens of the present invention is 0.5～0.6g/cm
3, the methylene blue loading capacity is 10～11mg/g, shows that active sludge charcoal of the present invention has Properties of Activated Carbon preferably.
The preparation method of active sludge charcoal of the present invention is made up of the following step:
Step 1, with the active sludge that produces in the microorganism treating sewage process in 100～110 ℃ of dehydrations down, oven dry,
Step 2, with the active sludge of step 1 oven dry under anoxic condition, 200～700 ℃ of pyroprocessing 0.5～2 hour, cooling promptly got gac mud.So-called " under the anoxic condition " is meant the processing of heating in airtight substantially process furnace, keeping furnace pressure in the process of heating is a normal atmosphere, and air outside the stove and the gas in the stove do not exchange basically simultaneously.
Above-mentioned preparation method also can carry out pre-treatment with active sludge earlier, and soon the first massfraction with solute of active sludge is 10～40% ZnCl
2Solution soaking washes with water to neutrality, and filters, and then makes the active sludge charcoal through above-mentioned step 1 and step 2.
Active sludge charcoal of the present invention can be used as the stopping composition in the plastics, particularly adds the cost that the quality that not only can not influence plastics in the igelite (PVC) also can reduce plastics to.
The present invention had both solved the problem of environmental pollution of active sludge, can be used as the utilization of resources again, and having reached changes the useless precious purpose that is.
Four, embodiment
Embodiment 1: active sludge is dewatered down at 100 ℃, oven dry, heating under the anoxic condition in the electric furnace preferably to 200 ℃ in sealing property made the active sludge thermally equivalent 2 hours, cooling, pulverize, sieve out of the ordinary got 200 eye mesh screens and 240 eye mesh screens make active sludge charcoal sample 1a and 1b.
Embodiment 2: active sludge in 110 ℃ of dehydrations, oven dry, is heated in electric furnace to 350 ℃, be heated 1.5 hours, other steps are made sample 2a and 2b with embodiment 1.
Embodiment 3: active sludge in 105 ℃ of dehydrations, oven dry, is heated to 550 ℃ in electric furnace, was heated 1.0 hours, other steps are made sample 3a and 3b with embodiment 1.
Embodiment 4: be heated to 700 ℃ in electric furnace, be heated 0.5 hour, other steps are made sample 4a and 4b with embodiment 3.
Embodiment 5: with active sludge is 20%ZnCl with the massfraction of solute earlier
2Solution soaking is washed to neutrality, filters, and again in 105 ℃ of dehydrations, oven dry, heating is 1 hour under 700 ℃ of high temperature, and cooling is pulverized, and sieve was got the active sludge charcoal of 200 eye mesh screens and made sample 5a.
Embodiment 6: with ZnCl
2The massfraction that solution changes solute into is 10% ZnCl
2Solution, other step are made sample 5b with embodiment 5.
Embodiment 7: with ZnCl
2The massfraction that solution changes solute into is 40%ZnCl
2Solution, other step are made sample 5c with embodiment 5.
The various sample quality of above-mentioned preparation are lighter, and after measured, its density is at 0.5～0.6g/cm
3, the methylene blue loading capacity is 10～11mg/g, shows that the active sludge charcoal sample of preparation has Properties of Activated Carbon preferably.
3, the active sludge charcoal is used to prepare composite plastic product (material) as stopping composition
(1) preparation: the above-mentioned sample of making as stopping composition, is prepared the compound PVC waterproof roll with the PVC particle.Take by weighing the 100g particulate polyvinyl chloride respectively, add stopping composition sample 1a, 1b, 2a, 2b, 3z, 3b, 4a, 4b, 5a, 5b and the 5c of 50g respectively, add softening agent, thermo-stabilizer etc. again, make composite polrvinyl chloride waterproof roll goods through heating,
(2) composite polrvinyl chloride plastics performance test,
A, tensile strength (representing with H laterally, vertically represent with Z that unit is MPa) and elongation at break (are laterally used L
1L is vertically used in expression
2The expression, unit is %) measurement result see Table 1
Index determining such as b, permeability resistance result lists table 2 in
Can find out by detected result, be used to prepare the tensile strength of compound polrvinyl chloride product and the acceptable end product requirement that the elongation at break index all can reach and surpass national regulation, use ZnCl by the stopping composition sample of active sludge through being processed into
2Solution gives the requirement that composite product that the sample of handling the active sludge charcoal that makes behind the active sludge makes can reach premium grads, the thermal treatment size changing rate, thermal ageing is handled and the aqueous solution is handled the influence of (using solution soaking such as acid, alkali, salt respectively after 28 days) and the requirement that velocity of variation all is far smaller than standard value, at permeability resistance, directions such as anti-pierceability also all reach and are better than the requirement of standard index.
Table 1
| Test sample product definiteness scale value | 1a | 1b | 2a | 2b | 3a | 3b | 4a | 4b | 5a | Standard value | |
| Premium grads | Acceptable end product | ||||||||||
| H/L 1 | 13.3/276.9 | 14.5/271.0 | 13.4/285.0 | 14.9/251.0 | 13.2/222.9 | 14.5/231.5 | 13.5/223.5 | 14.8/244.2 | 16.6/271.7 | Greater than 15.0/250 | Greater than 10.0/200 |
| Z/L 2 | 12.7/238.1 | 16.0/283.4 | 14.3/291.6 | 16.3/246.4 | 13.5/206.2 | 15.3/227.4 | 13.9/197.0 | 15.9/242.4 | 17.0/250.9 | ||
| Suctions such as goods | Acceptable end product | Premium grads | |||||||||
| Remarks | H/L 1Sharp Z/L 2Represent a class value of being measured respectively, identical with waterproof roll measurement result and 5a sample that 5b and 5c sample make | ||||||||||
Table 2
| The mensuration project | Measurement result | Standard value and requirement | ||
| Permeability resistance | 0.2MPa 24 hours, three goods can't be waterproof | Waterproof | ||
| Low temperature flexibility | -20 ℃, 1 hour, equal flawless | -20 ℃, flawless | ||
| Anti-pierceability | Three goods samples all do not have infiltration | Do not seep water | ||
| Thermal treatment size changing rate (%) | Vertically: 0.3 is horizontal: 0.2 | Be not more than 2.0 | ||
| Thermal ageing is handled | Tensile strength relative change rate (%) | Vertically: 14.2 is horizontal: 5.3 | ±20 | |
| Extension at break relative change rate (%) | Vertically: 2.4 is horizontal :-8.4 | |||
| The aqueous solution is handled | Tensile strength relative change rate (%) | Acid | Vertically: 15.7 is horizontal: 3.0 | ±20 |
| Alkalescence | Vertically: 7.1 is horizontal :-12.0 | |||
| Saline solution | Vertically: 13.4 is horizontal :-0.008 | |||
| Extension at break relative change rate (%) | Acid | Vertically: 18.4 is horizontal: 0.007 | ||
| Alkalescence | Vertically: 11.5 is horizontal :-19.6 | |||
| Saline solution | Vertically: 13.6 is horizontal :-6.0 | |||
| Remarks | The plastics of this sample for making by stopping composition 1a sample | |||
Claims (4)
1, a kind of active sludge charcoal is characterized in that the active sludge charcoal that it was made 200～700 ℃ of pyroprocessing by the active sludge of drying in 0.5～2 hour.
2, a kind of method for preparing the described active sludge charcoal of claim 1 is characterized in that being made up of the following step:
Step 1, with the active sludge that produces in the microorganism treating sewage process in 100～110 ℃ of dehydrations down, oven dry,
Step 2, with the active sludge of step 1 oven dry under anoxic condition, 200～700 ℃ of pyroprocessing 0.5～2 hour, cooling promptly got gac mud.
3, the method for preparing the active sludge charcoal according to claim 2 is characterized in that before step 1, and the first massfraction with solute of active sludge is 10～40% ZnCl
2Solution soaking washes with water then to neutrality and filtration.
4, the purposes of the described active sludge charcoal of a kind of claim 1 is characterized in that the active sludge charcoal is as the stopping composition in the plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113270 CN1228260C (en) | 2003-04-24 | 2003-04-24 | Active sludge carbon and its making method and use |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113270 CN1228260C (en) | 2003-04-24 | 2003-04-24 | Active sludge carbon and its making method and use |
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| CN1493535A CN1493535A (en) | 2004-05-05 |
| CN1228260C true CN1228260C (en) | 2005-11-23 |
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| CN 03113270 Expired - Fee Related CN1228260C (en) | 2003-04-24 | 2003-04-24 | Active sludge carbon and its making method and use |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845311B (en) * | 2010-04-29 | 2013-06-05 | 江苏中容电气有限公司 | Method for pyrolyzing municipal sludge and preparing biological oil and active carbon simultaneously |
| CN102786967A (en) * | 2011-05-19 | 2012-11-21 | 中国科学院城市环境研究所 | Method for preparing biochar from using sludge |
| WO2013063763A1 (en) * | 2011-11-01 | 2013-05-10 | 华南再生资源（中山）有限公司 | Method for using sludge to manufacture microporous adsorbent, product, and special equipment |
| CN104096541A (en) * | 2014-07-24 | 2014-10-15 | 扬州荣康空气净化设备有限公司 | Preparation method for regenerative active adsorbent through solid wastes and plants |
| CN105943457A (en) * | 2016-06-20 | 2016-09-21 | 合肥丰瑞隆生物科技有限公司 | Activated sludge charcoal shampoo and preparation method thereof |
| CN105919894A (en) * | 2016-06-20 | 2016-09-07 | 合肥丰瑞隆生物科技有限公司 | Biological environment-friendly liquid shampoo and preparing method thereof |
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