CN105060374A - Treatment method of power plant circulating sewage - Google Patents
Treatment method of power plant circulating sewage Download PDFInfo
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- CN105060374A CN105060374A CN201510627405.2A CN201510627405A CN105060374A CN 105060374 A CN105060374 A CN 105060374A CN 201510627405 A CN201510627405 A CN 201510627405A CN 105060374 A CN105060374 A CN 105060374A
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Abstract
The invention discloses a treatment method of power plant circulating sewage, which comprises the following steps: (1) preparation of power plant circulating sewage treatment agent: uniformly mixing 20-40 parts by weight of hydroxyapatite, 75-85 parts by weight of zeolite and 70-90 parts by weight of bentonite, carrying out activating treatment at 250-350 DEG C for 20-40 minutes, carrying out ultrafine grinding until the particle size is 0.01-10 mu m, and mixing with a coagulant to obtain the power plant circulating sewage treatment agent; (2) adding the power plant circulating sewage treatment agent into power plant circulating sewage, wherein the ratio of the power plant circulating sewage treatment agent to the power plant circulating sewage is 0.01-0.2 g/L; and (3) stirring, settling and filtering. The treatment method of power plant circulating sewage is convenient to operate, and has high treatment efficiency for power plant circulating sewage.
Description
Technical field
The present invention relates to a kind for the treatment of process of sewage, be specifically related to the treatment process of a kind of power plant circulating sewage.
Background technology
Along with the progress of the mankind and the development of industrial and agricultural production, people recognize gradually, water is not inexhaustible resource, but a kind of extremely valuable natural resources that not only there is economic worth but also there is restoring ecological environment, be the narrow resources that human society is faced with.Water resources total content is not enough, and spatial distribution is uneven is an important feature of China's water resources.According to incompletely statistics, at present, there is more than 100 national lack of water in the whole world, and wherein the country of serious water shortage has reached more than 40.The per capita water resources of China is only equivalent to 1/4 of world average level.Particularly in recent years, production and domestic water requirement constantly increase, and the problem of water resources deficiency becomes increasingly conspicuous.Meanwhile, China is also faced with the problem of water pollutions, exacerbates the shortage of water resources, annoyings national economy, and oneself becomes the principal element of restriction Sustainable Socioeconomic Development.Therefore, purifying surface water and administering contaminated wastewater is the final way solving water resources deficiency.
Sewage, be often referred to by certain that pollute, from life and the discharge water produced.Sewage mainly contains sanitary sewage, trade effluent and early-stage rainwater.The ill pathogen contaminant of principal pollutant of sewage, oxygen consumption pollutent, plant nutrient and toxic pollutant etc.Along with the development of the modernization of industry, the trade effluent of discharge also gets more and more, and brings very large impact to the life of environment and the mankind, if waste water processes not in time, not only directly affect Air quality, the quality of tap water, but also can in the physical and mental health of the remote effect mankind.
Existing industry, municipal wastewater treatment process have physical treatment process, method of chemical treatment and biological treatment.Physical treatment process is the simplest water treating method, and it reclaims the undissolved suspended contaminant in sewage by physical sepn effect, and physical treatment process can only process some simple wastewater treatments, but process is very incomplete, is difficult to reach emission standard; Chemical treatment method is with medicament process pollutent, comprising neutralization, flocculation, redox etc.; Biological treatment is the pollutant dissolution made by microbial metabolism in sewage, but the method investment is large, and running cost is high.
In the process of giving water and waste water, coagulation is treatment process conventional both at home and abroad.Precipitation process of coagulation is the basic operation unit for removing colloid and natural organic matter.Innovation and development chemical coagulation, simplify water treatment technological process, reduce working cost and the key of depuration quality of increasing water quality depends on the coagulation performance of used coagulating agent, the quality of coagulating agent performance directly has influence on the quality of water treatment final effect.So researching and developing water conditioner that novel height laughs at and material is one of direction given priority in water treatment environmental protection industry technical field, is the basis of Water Pollution Control Engineering innovation and development.Coagulating agent is mainly divided into compound (composite) coagulating agent of inorganic coagulant, organic coagulants, microorganism coagulating agent and novel development.Due to inorganic coagulant there is nontoxic (micro-poison), many-sided advantage such as inexpensive, raw material easily obtains, in coagulation water treatment technology, occupy very consequence, widely used by people always.Compared with inorganic coagulant, organic coagulants has that consumption is few, coagulation speed is fast, coexisted salt and envrionment temperature factor affect little, the treatment time is short, generates the advantages such as sludge quantity is few.
The sewage in fuel-burning power plant mainly comprises: trade effluent, ash flushing water and sanitary sewage.1. trade effluent: trade effluent is the general name of the total draining of industry, comprise industrial colling draining, chemical water treatment system acid-alkali regeneration waste water, filter backwash waste water, cleaning boiler waste water, defeated coal rinse and dust waste water, oily(waste)water, cooling tower blowdown water etc.2. ash flushing water: ash flushing water mainly refers to the water for rinsing slag and remover ash discharge dust, generally discharges after the sedimentation of grey field.3. sanitary sewage: sanitary sewage refers to the sewage that power plant resident discharges.Waste water of heat-engine plant is administered generally can be divided into two large classes: one is that the whole waste water of power plant focuses on by the qualitative classification of pollutent contained by it, then enters water and stops; Two is the process waste water modes with dispersion, then enters water drain or grey field.The object of waste water of heat-engine plant reuse is exactly water quality and the water yield requirement of kind, feature and different production workshop sections reuse water according to different waste water, adopts various water technology and measure by its separated from contaminants, transforms Sum decomposition.
Summary of the invention
For above shortcomings in prior art, technical problem to be solved by this invention is to provide the treatment process of a kind of power plant circulating sewage.
The present invention seeks to be achieved through the following technical solutions:
The treatment process of power plant's circulating sewage, comprises the steps:
(1) power plant's circulating sewage treatment agent is prepared: by 20-40 weight part hydroxyapatite, 75-85 weight part zeolite, the mixing of 70-90 parts by weight of bentonite, 250-350 DEG C of activation treatment 20-40min, superfine grinding to particle diameter is 0.01-10 μm, mix with coagulating agent again, obtained described power plant circulating sewage treatment agent;
(2) power plant's circulating sewage treatment agent is added in power plant's circulating sewage, power plant's circulating sewage treatment agent be 0.01-0.2g/L with the ratio of power plant circulating sewage amount;
(3) stir, sedimentation, filter.
Preferably, described coagulating agent is mixed by xylogen, polymerize aluminum chloride and sodium p styrene sulfonate, and the mass ratio of described xylogen, polymerize aluminum chloride, sodium p styrene sulfonate is (1-3): (1-3): (1-3).
Concrete, in the present invention:
Hydroxyapatite, No. CAS: 1306-06-5.
Zeolite, No. CAS: 1318-02-1.
Wilkinite, No. CAS: 1302-78-9.
Xylogen, No. CAS: 9005-53-2.
Polymerize aluminum chloride, No. CAS: 1327-41-9.
Sodium p styrene sulfonate, No. CAS: 2695-37-6.
The treatment process of power plant of the present invention circulating sewage, easy to operate, high to power plant's circulating sewage processing efficiency.
Embodiment
Embodiment 1
The treatment process of power plant's circulating sewage, comprises the steps:
(1) power plant's circulating sewage treatment agent is prepared: by 30 weight part hydroxyapatites, 80 weight part zeolites, 85 parts by weight of bentonite mixings, 300 DEG C of activation treatment 30min, superfine grinding to particle diameter is 0.1 μm, then mixes with coagulating agent, obtained described power plant circulating sewage treatment agent;
(2) power plant's circulating sewage treatment agent is added in power plant's circulating sewage, power plant's circulating sewage treatment agent be 0.1g/L with the ratio of power plant circulating sewage amount, namely add 0.1g power plant circulating sewage treatment agent in 1 liter of power plant's circulating sewage;
(3) constant temperature stirs, mixing speed 140r/min, whipping temp 28 DEG C, 0.45 μm of membrane filtration after sedimentation 30min.
Described in step (1), coagulating agent is mixed by xylogen, polymerize aluminum chloride and sodium p styrene sulfonate, and the mass ratio of described xylogen, polymerize aluminum chloride, sodium p styrene sulfonate is 1:1:1.
Embodiment 2
Substantially the same manner as Example 1, difference is only: coagulating agent is replaced with xylogen, polymerize aluminum chloride mass ratio is the mixture of 1:1.
Embodiment 3
Substantially the same manner as Example 1, difference is only: coagulating agent is replaced with xylogen, sodium p styrene sulfonate mass ratio is the mixture of 1:1.
Embodiment 4
Substantially the same manner as Example 1, difference is only: coagulating agent is replaced with polymerize aluminum chloride, sodium p styrene sulfonate mass ratio is the mixture of 1:1.
Test case 1
Test power plant's circulating sewage and the water after embodiment 1-4 process, data are in table 1.
Table 1: water-quality test table
| COD，mg/L | Turbidity, NTU | |
| Former water | 59 | 25 |
| Embodiment 1 | 24 | 7 |
| Embodiment 2 | 29 | 11 |
| Embodiment 3 | 31 | 10 |
| Embodiment 4 | 30 | 12 |
By table 1 test result, embodiment 1 employs the composite coagulating agent of xylogen, polymerize aluminum chloride and sodium p styrene sulfonate, omit wherein compared with any one with embodiment 2-4, when coagulating agent add total amount identical, the effect after embodiment 1 pair of power plant's circulating sewage process is more excellent.
Claims (2)
1. the treatment process of power plant's circulating sewage, is characterized in that, comprises the steps:
(1) power plant's circulating sewage treatment agent is prepared: by 20-40 weight part hydroxyapatite, 75-85 weight part zeolite, the mixing of 70-90 parts by weight of bentonite, 250-350 DEG C of activation treatment 20-40min, superfine grinding to particle diameter is 0.01-10 μm, mix with coagulating agent again, obtained described power plant circulating sewage treatment agent;
(2) power plant's circulating sewage treatment agent is added in power plant's circulating sewage, power plant's circulating sewage treatment agent be 0.01-0.2g/L with the ratio of power plant circulating sewage amount;
(3) stir, sedimentation, filter.
2. the treatment process of power plant as claimed in claim 1 circulating sewage, it is characterized in that, described coagulating agent is mixed by xylogen, polymerize aluminum chloride and sodium p styrene sulfonate, and the mass ratio of described xylogen, polymerize aluminum chloride, sodium p styrene sulfonate is (1-3): (1-3): (1-3).
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| CN201510627405.2A CN105060374B (en) | 2015-09-28 | 2015-09-28 | The processing method of power plant cycle sewage |
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| CN201510627405.2A CN105060374B (en) | 2015-09-28 | 2015-09-28 | The processing method of power plant cycle sewage |
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| CN105060374A true CN105060374A (en) | 2015-11-18 |
| CN105060374B CN105060374B (en) | 2018-01-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461036A (en) * | 2015-12-04 | 2016-04-06 | 佛山市中科院环境与安全检测认证中心有限公司 | Water treatment flocculant |
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| EP0056926A1 (en) * | 1981-01-19 | 1982-08-04 | Michael Fehle | Waste water recycling and treatment by adsorption of non-biodegradable substances such as humic and sulfonic acids, melanoidine and chlorinated organics on lignite coke, in all kinds of solid-liquid reactors |
| CN1587082A (en) * | 2004-09-30 | 2005-03-02 | 北京工业大学 | Composite natural micro porous material sewage treating agent |
| JP2009256430A (en) * | 2008-04-15 | 2009-11-05 | Tosoh Corp | Heavy metal-treating agent and method for treating heavy metal-contaminated material by using the same |
| CN102658082A (en) * | 2012-04-25 | 2012-09-12 | 武汉理工大学 | Inorganic composite material for absorbent refining multiple metal ion industrial sewage and application method thereof |
| CN103055804A (en) * | 2013-01-17 | 2013-04-24 | 河海大学 | Compound water treatment agent as well as preparation method and application thereof |
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2015
- 2015-09-28 CN CN201510627405.2A patent/CN105060374B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0056926A1 (en) * | 1981-01-19 | 1982-08-04 | Michael Fehle | Waste water recycling and treatment by adsorption of non-biodegradable substances such as humic and sulfonic acids, melanoidine and chlorinated organics on lignite coke, in all kinds of solid-liquid reactors |
| CN1587082A (en) * | 2004-09-30 | 2005-03-02 | 北京工业大学 | Composite natural micro porous material sewage treating agent |
| JP2009256430A (en) * | 2008-04-15 | 2009-11-05 | Tosoh Corp | Heavy metal-treating agent and method for treating heavy metal-contaminated material by using the same |
| CN102658082A (en) * | 2012-04-25 | 2012-09-12 | 武汉理工大学 | Inorganic composite material for absorbent refining multiple metal ion industrial sewage and application method thereof |
| CN103055804A (en) * | 2013-01-17 | 2013-04-24 | 河海大学 | Compound water treatment agent as well as preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105461036A (en) * | 2015-12-04 | 2016-04-06 | 佛山市中科院环境与安全检测认证中心有限公司 | Water treatment flocculant |
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Effective date of registration: 20191029 Address after: Room 1210, 12th floor, building B, Sanbao industrial building, No.601, hanghai Road, Jianggan District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou leading energy saving Technology Co., Ltd. Address before: 315040 411-45-4 room 4, building 599, Jiangnan Road, hi tech Zone, Zhejiang, Ningbo, 2 Patentee before: NINGBO HI-TECH ZONE BAYI NEW MATERIAL TECHNOLOGY CO., LTD. |
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