CN101560008B - Method for treating low-concentration phosphorus-containing wastewater - Google Patents
Method for treating low-concentration phosphorus-containing wastewater Download PDFInfo
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- CN101560008B CN101560008B CN2009100520575A CN200910052057A CN101560008B CN 101560008 B CN101560008 B CN 101560008B CN 2009100520575 A CN2009100520575 A CN 2009100520575A CN 200910052057 A CN200910052057 A CN 200910052057A CN 101560008 B CN101560008 B CN 101560008B
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Abstract
The invention discloses a spherical light porous material for wastewater treatment, which takes fly ash and residual sludge of urban sewage plants as main raw materials, clay as a bonding agent, and desulfurized gypsum of coal-fired power plants as an expanding agent. The spherical light porous material for wastewater treatment comprises the following compositions: 70 percent of fly ash, 25 percent of dehydrated sludge, 2 percent of desulfurized gypsum, and 3 percent of clay. The spherical light porous material is formed through high-temperature sintering by adopting the fly ash and the residual sludge of the urban sewage treatment plants as the main raw materials. The loose unit weight of the spherical light porous material is approximately 551 kg/m<3>; the particle unit weight of the spherical light porous material is approximately 100 kg/m<3>; the water absorption rate of the spherical light porous material is approximately 48.44 percent; and the hydrochloric acid soluble rate of the spherical light porous material is approximately 0.24 percent. The light porous material can meet the quality requirement of water treatment materials.
Description
Technical field
The present invention relates to a kind of utilization is the method for the spherical light porous water-purifying material processing low-concentration phosphorus-containing wastewater of main raw material preparation with flyash, excess sludge of municipal sewage plant.
Background technology
" China Environmental State Bulletin in 2007 " according to national environmental protection portion issue in 2008 shows; water polluted still serious in 2007; in 26 lakes (storehouse) of monitoring; serious rice-nutrient account for 7.7%; moderate account for 11.5%, slight accounts for 34.6%, main pollution index is total nitrogen and total phosphorus; the controlled especially factor of phosphorus wherein, the lake eutrophication problem is very outstanding.
Current, surface water body is administered technology can be summed up as following a few class: physico-chemical processes has the advantage of instant effect, easy handling, be applicable to the processing of medium and small landscape water body, but physico-chemical processes mostly is an emergency schedule, only cures the symptoms, not the disease, and cost is higher, easily produces secondary pollution; Biological process, biological method have advantages such as working cost is low, operational administrative simple, non-secondary pollution, if the organic content in the landscape water body is higher, then can utilize biological method to handle, but biological process are subjected to the restriction of temperature, is unfavorable for promoting in China; Ecological method is fit to recover by the nature self-law reparation theory of its original looks, has original advantage in eutrophication water is handled, though ecological method is treated both principal and secondary aspect of disease, its cycle is long, takes effect slowly.Above-mentioned surface water body improvement technology has his own strong points, but all has certain limitation in application.The water-purifying material that utilizes flyash to make purifies and contains phosphorus water, and economical and effective is simple and practical, and can turn waste into wealth, and avoids secondary pollution.
Summary of the invention
It is the method for the spherical light porous water-purifying material processing low-concentration phosphorus-containing wastewater of main raw material preparation with flyash, excess sludge of municipal sewage plant that technical problem to be solved by this invention provides a kind of utilization.
The technical solution used in the present invention: a kind of method of handling low-concentration phosphorus-containing wastewater comprises the following steps:
A, preparation flyash water-purifying material
Material is pressed the quality proportioning: the mixed of flyash 70%, dewatered sludge 25%, desulfurated plaster 2%, clay 3%, adding water stirred 30 minutes, wherein water-content accounts for 6% of material total amount, then with the matter homogenizing that mixes 30 minutes, make the spherical raw material ball of diameter 8-10mm size, raw material ball is added in the loft drier, be 105 ℃ of dry 1h, insert again in the retort furnace at 300 ℃ of pre-burning 20min, then, at last it is chilled to room temperature, water seasoning at 800 ℃ of following sintering 30min, natural air drying obtains the flyash water-purifying material;
B, Removal of Phosphorus in Wastewater
Add the above-mentioned flyash water-purifying material of 100g in every liter of concentration is the phosphorus-containing wastewater of 5mg/L, makes the solid-liquid thorough mixing, react 24h under the condition of normal temperature, rotating speed 100r/min, reaction finishes the back solid-liquid separation, finishes the purifying treatment to phosphorus-containing wastewater.
Beneficial effect of the present invention: the present invention utilizes the fly-ash Preparation water-purifying material, and the phosphorus-containing wastewater about 5mg/L is had good effect of removing, and clearance is 99.26%, and phosphorus concentration is reduced under the eutrophication index (0.1mg/L).One aspect of the present invention can be purified to harmless state with phosphorus in the eutrophication water, on the other hand can be with the Reuse of materials of the saturated phosphorus of absorption that utilized in soil improvement.Economical and effective of the present invention, simple and practical, can turn waste into wealth, avoid secondary pollution.
Embodiment
Below by embodiment the present invention is described in further detail, a kind of method of handling low-concentration phosphorus-containing wastewater comprises the following steps:
A, the dry grey water-purifying material of preparation powder
Material is pressed the quality proportioning: the mixed of flyash 70%, dewatered sludge 25%, desulfurated plaster 2%, clay 3%, adding water stirred 30 minutes, wherein water-content accounts for 6% of material total amount, then with the matter homogenizing that mixes 30 minutes, make the spherical raw material ball of diameter 8-10mm size, raw material ball is added in the loft drier, be 105 ℃ of dry 1h, insert again in the retort furnace at 300 ℃ of pre-burning 20min, then, at last it is chilled to room temperature, water seasoning at 800 ℃ of following sintering 30min, natural air drying obtains the flyash water-purifying material;
B, Removal of Phosphorus in Wastewater
Add the above-mentioned flyash water-purifying material of 100g in every liter of concentration is the phosphorus-containing wastewater of 5mg/L, makes the solid-liquid thorough mixing, react 24h under the condition of normal temperature, rotating speed 100r/min, reaction finishes the back solid-liquid separation, finishes the purifying treatment to phosphorus-containing wastewater.
Embodiment
Adopt the present invention that the fly-ash Preparation of Waigaoqiao of Shaihai power plant is become water-purifying material, utilize the water-purifying material of preparation to carry out purifying treatment then to containing phosphorus water, waste strength is 5mg/L, every liter of waste water of dosage 100 grams, 25 ℃ of normal temperature, rotating speed are 100r/min, reaction 24h, phosphorus content is 0.037mg/L in the water body of processing back, and clearance is 99.26%.Phosphorus concentration is reduced under the eutrophication index (0.1mg/L).
The material preparation process that wherein relates to is as follows: material is pressed the quality proportioning: flyash 70%, dewatered sludge 25%, desulfurated plaster 2%, the mixed of clay 3%, adding water stirred 30 minutes, wherein water-content accounts for 6% of material total amount, then with the matter homogenizing that mixes 30 minutes, make the spherical raw material ball of diameter 8-10mm size, raw material ball is added in the loft drier, be 105 ℃ of dry 1h, insert again in the retort furnace at 300 ℃ of pre-burning 20min, then, at last it is chilled to room temperature, water seasoning at 800 ℃ of following sintering 30min, natural air drying obtains the flyash water-purifying material.
Described content only is the basic explanation of the present invention under conceiving, and according to any equivalent transformation that technical scheme of the present invention is done, all should belong to protection scope of the present invention.
Claims (1)
1. a method of handling low-concentration phosphorus-containing wastewater comprises the following steps:
A, preparation flyash water-purifying material
Material is pressed the quality proportioning: the mixed of flyash 70%, dewatered sludge 25%, desulfurated plaster 2%, clay 3%, adding water stirred 30 minutes, wherein water-content accounts for 6% of material total amount, then with the matter homogenizing that mixes 30 minutes, make the spherical raw material ball of diameter 8-10mm size, raw material ball is added in the loft drier, be 105 ℃ of dry 1h, insert again in the retort furnace at 300 ℃ of pre-burning 20min, then, at last it is chilled to room temperature, water seasoning at 800 ℃ of following sintering 30min, natural air drying obtains the flyash water-purifying material;
B, Removal of Phosphorus in Wastewater
Add the above-mentioned flyash water-purifying material of 100g in every liter of concentration is the phosphorus-containing wastewater of 5mg/L, makes the solid-liquid thorough mixing, react 24h under the condition of normal temperature, rotating speed 100r/min, reaction finishes the back solid-liquid separation, finishes the purifying treatment to phosphorus-containing wastewater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100520575A CN101560008B (en) | 2009-05-26 | 2009-05-26 | Method for treating low-concentration phosphorus-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100520575A CN101560008B (en) | 2009-05-26 | 2009-05-26 | Method for treating low-concentration phosphorus-containing wastewater |
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| Publication Number | Publication Date |
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| CN101560008A CN101560008A (en) | 2009-10-21 |
| CN101560008B true CN101560008B (en) | 2011-08-17 |
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| CN2009100520575A Expired - Fee Related CN101560008B (en) | 2009-05-26 | 2009-05-26 | Method for treating low-concentration phosphorus-containing wastewater |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092811B (en) * | 2010-12-25 | 2012-06-20 | 河南科技大学 | Recycling method of phosphorus in waste water |
| CN106748269A (en) * | 2017-01-24 | 2017-05-31 | 章誉之 | Comprehensive use of the flyash in processing waste water and preparing soil conditioner |
| CN110255857B (en) * | 2019-05-28 | 2021-12-14 | 路德环境科技股份有限公司 | Low-alkali conditioner for deep dehydration of building slurry and dehydration method |
| CN115646444B (en) * | 2022-10-27 | 2024-02-06 | 攀枝花学院 | Sewage dephosphorization material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007698A (en) * | 2007-01-19 | 2007-08-01 | 广州普得环保设备有限公司 | Simple and low energy consumption method for making brick from sludge |
| CN101148346A (en) * | 2007-09-04 | 2008-03-26 | 山东大学 | Method for preparing haydite from urban sewage plant sludge |
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2009
- 2009-05-26 CN CN2009100520575A patent/CN101560008B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007698A (en) * | 2007-01-19 | 2007-08-01 | 广州普得环保设备有限公司 | Simple and low energy consumption method for making brick from sludge |
| CN101148346A (en) * | 2007-09-04 | 2008-03-26 | 山东大学 | Method for preparing haydite from urban sewage plant sludge |
Non-Patent Citations (2)
| Title |
|---|
| JP昭61-48475A 1986.03.10 |
| 蔡昌凤等.粉煤灰/污泥烧结陶粒的研制与应用.《环境污染与防治》.2007,第29卷(第1期),第26-29页. * |
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| CN101560008A (en) | 2009-10-21 |
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Granted publication date: 20110817 Termination date: 20160526 |