CN1478739A - Sludge treatment method and its artificial wetland treatment pool - Google Patents
Sludge treatment method and its artificial wetland treatment pool Download PDFInfo
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- CN1478739A CN1478739A CNA031499902A CN03149990A CN1478739A CN 1478739 A CN1478739 A CN 1478739A CN A031499902 A CNA031499902 A CN A031499902A CN 03149990 A CN03149990 A CN 03149990A CN 1478739 A CN1478739 A CN 1478739A
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Abstract
A method for treating mud by artificial nunja as treating pool features that said artificial nunja has a slope bottom made of artifial matrix and the emerging plant is planted in the artificial nunja formed by loading the mud in the treating pool. The cooperation of plant, mud and microbes can decompose the organic substances, N, P, heavy metals and pathogenic bacteria in mud.
Description
Technical field
The present invention relates to a kind of sludge of sewage treatment plants treatment process and artificial swamp treating pond thereof, belong to sewage, field of sludge treatment.
Background technology
In China, sanitary sewage and Industrial Wastewater Treatment amount are increasing, and consequent sewage, mud also constantly increase.By China's long-range objectives through the year 2010 planning, China's treatment rate of domestic sewage will bring up to 25% to the end of this century, and the mud of corresponding generation certainly will be more and more huger.At present, China produces nearly 300,000 tons of mud (dry-matter meter) per year, has the mud more than 50% directly to discharge without any processing.At present, China for the processing of mud adopt concentrate, dehydration, with the press filtration of plate pressure filter, airing, be transported to the method that biogas was handled, produced to elsewhere again, the plate pressure filter price height that this method is used, perishable, and this method capital construction and working cost are all very high, make the sludge treatment expense account for significant proportion in sewage work, unbecoming with the sewage disposal expense; And utilize system as the most promising soil, often its utilization is very restricted owing to containing a large amount of heavy metals, pathogenic bacteria and hardly degraded organic substance in the mud.
Summary of the invention
The object of the invention is to provide the method for sludge treatment and the respective handling pond of a kind of efficient, simple, economy, non-secondary pollution.
The object of the present invention is achieved like this:
A kind of method for sludge treatment may further comprise the steps
(1) Sewage Plant is flowed into biological reaction tank without the mud that concentrates, dewaters, remove the part heavy metal in the mud;
(2) (1) reacted mud is flowed into mud artificial swamp treating pond;
(3) the plantation emergent makes the sewage backflow that goes out by the diafiltration for the treatment of pond institute handle to Sewage treatment systems to absorb moisture and the heavy metal in the mud simultaneously in the artificial swamp treating pond;
(4) when the sludge quantity in the artificial swamp treating pond and moisture thereof acquire a certain degree, that sludge removal is standby.
Biology in the described biological reaction tank is for being dominant bacteria with the thiobacillus.
Described emergent is reed, Herba Eichhorniae, Scirpus tabernaemontani or barnyard grass grass.
Described removing is that the sludge water content content in the artificial swamp treating pond carries out when reaching 45-55%.
A kind of artificial swamp treating pond that is used for sludge treatment comprises treating pond body and artificial substratum, and the pond body is a rectangle, and the bottom surface of pond body is the gradient bottom surface, and there is water from diffusion outlet at the least significant end place of gradient bottom surface, and one deck artificial substratum is laid on the basal surface of pond body.
The pond body length-width-ratio of described treating pond is 3-7: 1.
The gradient of the bottom surface of described pond body is 0.01-0.08.
Described artificial substratum thickness is 0.5-0.7 rice, and artificial substratum is divided into two-layerly again, and the upper strata is a small-particle, and lower floor is a macrobead.
Described artificial substratum is rubble, gravel or gravel.
Below the present invention is described in detail: the artificial swamp treating pond that mud is housed is just as an artificial swamp, some handling properties of plantation are good in the artificial substratum topsoil, surviving rate is high, growth cycle is long, the emergent (as Herba Eichhorniae, Scirpus tabernaemontani, barnyard grass grass etc.) of well developed root system, attractive in appearance and economically valuable, artificial substratum, emergent and microorganism are to constitute a reaction bed, thereby constitute Wetlands ecosystems.Artificial swamp to the purification mechanism of sewage is: artificial substratum provides the stable surface that depends on for microbial growth, for emergent provides carrier and nutritive substance, and purifies waste water by some physics and chemistry route; Emergent also has delivering oxygen to the root district with keep the effect that waterpower is transmitted except that directly absorbing nutritive substance in the sewage and absorption, some hazardous and noxious substances of enrichment; The metabolism of microorganism is the main mechanism of organic pollutant degradation in the sewage.They connect each other simultaneously, and reciprocal causation forms a system.It is that 99% above sludge quantity is 6 tons that every mu of artificial swamp day handles moisture, handles the back moisture percentage in sewage sludge and can reduce to about 40%, and sludge volume is significantly reduced.Mud is used to improve the soil or the basic soil of conduct after handling, the restriction to the utilization of mud soil that thoroughly solves heavy metal, pathogenic bacteria and hardly degraded organic substance.The handled mud of the present invention is without the very high mud of spissated water ratio, so can save concentration basin, dewatering machine in the sewage work, saves initial cost greatly, and capital cost accounts for the 1/3-1/2 of traditional method; And energy consumption in service is lower, so can save running cost greatly again, is the 1/3-1/5 of traditional method.And health, no stink be set, do not grow mosquitos and flies, polluted underground water not, collection " subtracting appearance, stable, harmless, resource utilization " is an one, convenient management is applicable to the sludge treatment of middle-size and small-size Sewage Plant.
Description of drawings
Fig. 1 is a mud artificial swamp processing flow chart
Fig. 2 is the structural representation of the artificial wetland treating pond of the present invention.1. advance 3. water outlets of mud 2. filter layers to Sewage treatment systems
Embodiment
For the small sewage treatment plant of handling 2000 tons of sanitary sewages day, it produces 10 tons in mud (water ratio is more than 99%) daily.Sewage Plant is flowed into the biological reaction tank that has with the thiobacillus bacterium liquid that is dominant bacteria without the mud that concentrates, dewaters, to remove the part heavy metal in the mud; Then reacted mud is flowed into the mud artificial swamp treating pond that is made for the treatment of pond body and artificial substratum,, the pond body is designed to 200m according to the amount of mud
2Square rectangle pond, pond body length-width-ratio is 3: 1, the bottom surface of pond body is that the gradient is 0.03 gradient bottom surface, one deck artificial substratum is laid on the basal surface of pond body, artificial substratum is a rubble, thickness is 0.5 meter, and artificial substratum is divided into two-layerly again, is that small-particle, lower floor are that oarse-grained mode distributes with the upper strata.There is water from diffusion outlet at the least significant end place of gradient bottom surface, and the water from diffusion of mud is back to Sewage treatment systems by a header.The artificial swamp treating pond that fills mud promptly constitutes an artificial swamp, plantation barnyard grass grass in artificial swamp, wait to record moisture content in the mud reach 40% o'clock sludge removal is standby, organism reaches stabilization in the mud of clearing out of, the average removal rate of N is 80%, the average removal rate of P is 75%, and heavy metal content is lower than the soil standard.
Claims (9)
1, a kind of method for sludge treatment is characterized in that: this method may further comprise the steps
(1) Sewage Plant is flowed into biological reaction tank without the mud that concentrates, dewaters, remove the part heavy metal in the mud;
(2) (1) reacted mud is flowed into mud artificial swamp treating pond;
(3) the plantation emergent makes the sewage backflow that goes out by the diafiltration for the treatment of pond institute handle to Sewage treatment systems to absorb moisture and the heavy metal in the mud simultaneously in the artificial swamp treating pond;
(4) when the sludge quantity in the artificial swamp treating pond and moisture thereof acquire a certain degree, that sludge removal is standby.
2, method according to claim 1 is characterized in that: the biology in the described biological reaction tank is for being dominant bacteria with the thiobacillus.
3, method according to claim 1 is characterized in that: described emergent is reed, Herba Eichhorniae, Scirpus tabernaemontani or barnyard grass grass.
4, method according to claim 1 is characterized in that: described removing is that the sludge water content content in the artificial swamp treating pond carries out when reaching 45-55%.
5, a kind of artificial swamp treating pond that is used for sludge treatment, it is characterized in that: this treating pond comprises treating pond body and artificial substratum, the pond body is a rectangle, the bottom surface of pond body is the gradient bottom surface, there is water from diffusion outlet at the least significant end place of gradient bottom surface, and one deck artificial substratum is laid on the basal surface of pond body.
6, treating pond according to claim 5 is characterized in that: the pond body length-width-ratio of described treating pond is 3-7: 1.
7, treating pond according to claim 5 is characterized in that: the gradient of the bottom surface of described pond body is 0.01-0.08.
8, treating pond according to claim 5 is characterized in that: described artificial substratum thickness is 0.5-0.7 rice, and artificial substratum is divided into two-layerly again, and the upper strata is a small-particle, and lower floor is a macrobead.
9, according to the described treating pond in one of claim 5 or 8, it is characterized in that: described artificial substratum is rubble, gravel or gravel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031499902A CN1478739A (en) | 2003-08-04 | 2003-08-04 | Sludge treatment method and its artificial wetland treatment pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031499902A CN1478739A (en) | 2003-08-04 | 2003-08-04 | Sludge treatment method and its artificial wetland treatment pool |
Publications (1)
| Publication Number | Publication Date |
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| CN1478739A true CN1478739A (en) | 2004-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA031499902A Pending CN1478739A (en) | 2003-08-04 | 2003-08-04 | Sludge treatment method and its artificial wetland treatment pool |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973635A (en) * | 2010-09-21 | 2011-02-16 | 常州大学 | Method for efficiently purifying heavy metal polluted wastewater by combining wetland plant |
| CN102153258A (en) * | 2010-12-02 | 2011-08-17 | 福建省农业科学院农业工程技术研究所 | Production technique for reducing content of heavy metals in municipal domestic sludge |
| CN102577688A (en) * | 2012-03-13 | 2012-07-18 | 黑龙江省科学院自然与生态研究所 | Moisture management method for carbon sequestration and carbon sink increase for wetlands |
| CN102603139A (en) * | 2012-04-05 | 2012-07-25 | 上海市园林科学研究所 | Method for eliminating copper and zinc pollution in municipal sludge utilizing barnyard grass |
| CN101665313B (en) * | 2008-09-05 | 2012-08-01 | 复旦大学 | Method for quick resource utilization of un-dewatered returned sludge of domestic sewage factory |
| CN105537265A (en) * | 2016-03-11 | 2016-05-04 | 安徽工程大学 | Heavy metal contaminated soil remediation method and system with water hyacinths |
| CN105621837A (en) * | 2016-03-11 | 2016-06-01 | 安徽工程大学 | System and method for treating heavy metal in excess sludge through water hyacinth |
| CN111635094A (en) * | 2020-05-19 | 2020-09-08 | 上海国惠环保科技集团有限公司 | Method for biological dehydration and resource treatment of sludge |
-
2003
- 2003-08-04 CN CNA031499902A patent/CN1478739A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665313B (en) * | 2008-09-05 | 2012-08-01 | 复旦大学 | Method for quick resource utilization of un-dewatered returned sludge of domestic sewage factory |
| CN101973635A (en) * | 2010-09-21 | 2011-02-16 | 常州大学 | Method for efficiently purifying heavy metal polluted wastewater by combining wetland plant |
| CN101973635B (en) * | 2010-09-21 | 2012-11-28 | 常州大学 | Method for efficiently purifying heavy metal polluted wastewater by combining wetland plant |
| CN102153258A (en) * | 2010-12-02 | 2011-08-17 | 福建省农业科学院农业工程技术研究所 | Production technique for reducing content of heavy metals in municipal domestic sludge |
| CN102577688A (en) * | 2012-03-13 | 2012-07-18 | 黑龙江省科学院自然与生态研究所 | Moisture management method for carbon sequestration and carbon sink increase for wetlands |
| CN102577688B (en) * | 2012-03-13 | 2013-10-23 | 黑龙江省科学院自然与生态研究所 | Moisture management method for carbon sequestration and carbon sink increase for wetlands |
| CN102603139A (en) * | 2012-04-05 | 2012-07-25 | 上海市园林科学研究所 | Method for eliminating copper and zinc pollution in municipal sludge utilizing barnyard grass |
| CN105537265A (en) * | 2016-03-11 | 2016-05-04 | 安徽工程大学 | Heavy metal contaminated soil remediation method and system with water hyacinths |
| CN105621837A (en) * | 2016-03-11 | 2016-06-01 | 安徽工程大学 | System and method for treating heavy metal in excess sludge through water hyacinth |
| CN105621837B (en) * | 2016-03-11 | 2018-07-06 | 安徽工程大学 | With the system and method for water hyacinth processing heavy metals in excess sludge |
| CN105537265B (en) * | 2016-03-11 | 2018-08-24 | 安徽工程大学 | A kind of the water hyacinth restorative procedure and repair system of heavy-metal contaminated soil |
| CN111635094A (en) * | 2020-05-19 | 2020-09-08 | 上海国惠环保科技集团有限公司 | Method for biological dehydration and resource treatment of sludge |
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