CN101643260A - Method for treating industrial waste water - Google Patents
Method for treating industrial waste water Download PDFInfo
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- CN101643260A CN101643260A CN200810117641A CN200810117641A CN101643260A CN 101643260 A CN101643260 A CN 101643260A CN 200810117641 A CN200810117641 A CN 200810117641A CN 200810117641 A CN200810117641 A CN 200810117641A CN 101643260 A CN101643260 A CN 101643260A
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- waste water
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Abstract
The invention discloses a method for treating industrial waste water, which belongs to the technical field of environmental protection and particularly relates to a method for treating industrial waste water. The invention provides a method for treating industrial waste water, which is simple in operation and excellent in treatment effect on petrochemical waste water and ensures that the effluentis discharged after reaching standards. The invention adopts a technical scheme that: the method combines physical and chemical processes and mainly comprises pretreatment, chemical treatment and sludge dewatering and burning. The pretreatment is carried out by using a grid, a grit tank and an adjusting pond, wherein sewage first passes through the grid to remove large suspended matters, then enters the grit tank for sand setting and finally enters the adjusting pond, and at the same time, air stirring is adopted in the adjusting tank to balance water quality and prevent sludge sedimentation;the chemical treatment is carried out by a coagulating sedimentation method, namely, a aluminium polychlorid (PAC) coagulant is used to purify the waste water; and a sludge treatment system adopts concentration, dewatering and burning processes to radically treat sludge and eliminate secondary pollution.
Description
Technical field
The invention belongs to environmental technology field, particularly a kind of processing method of industrial waste water.
Background technology
The waste water of discharging in the Industrial processes comprises technological process water, machinery equipment water coolant, fume washing water, equipment and place rinse water etc.The pollution that trade effluent causes mainly contains: organic aerobic material pollutes, and chemical toxicant pollutes, and the inoganic solids suspended substance pollutes, heavy metal contamination, acid pollution, alkali pollution, pollution of plant nutritions, thermal pollution, pathogen contamination etc.Many pollutents have color, stink or easily give birth to foam, so trade effluent often presents unpleasant outward appearance.Trade effluent is divided into usually by contained principal pollutant character: organic waste water, inorganic wastewater, double composite waste, the heavy metal wastewater thereby that contains organism and inorganics, contain the waste water of radioactive substance and only be subjected to the water coolant of thermal pollution.Industrial sector by producing waste water can be divided into paper waste, leather-making waste water, agricultural chemicals waste water, electroplating wastewater etc.The characteristics of trade effluent are that the water yield of water quality is very big because of the different difference of the production technique and the mode of production.Waste water as departments such as electric power, mines mainly contains inorganic pollutant, and the waste water of industrial sectors such as papermaking and food, organic content is very high, BOD
5(five-day BOD) often surpasses 2000 mg/litre, and what have reaches 30000 mg/litre.Even same production process, water quality also can great changes have taken place in the production process.Another characteristics of trade effluent are: except that indirect cooling water, all contain multiple with the relevant material of starting material, and the form that exists in waste water often has nothing in common with each other, in glass industry waste water and the electroplating wastewater, be hydrogen fluoride or fluorion form as fluorine, and be that form with silicon tetrafluoride exists in phosphate fertilizer plant's waste water; Nickel can be ionic state or complex state in waste water.These characteristics have increased the difficulty of purification of waste water.The water yield of trade effluent depends on the water situation.Industrial water consumptions such as metallurgy, papermaking, petrochemical complex, electric power are big, and wastewater flow rate is also big.The treatment process of oil industry wastewater has ion exchange method, membrane separation technique, absorption method etc.Ion exchange method cost height only is suitable for large-lot producer and uses; Membrane separation technique and absorption method technology are not overripened, complicated operation; And use a kind of technical finesse trade effluent merely, do not reach the ideal treatment effect.
Summary of the invention
The invention provides a kind of simple to operate, handle that but petrochemical wastewater is effective, a kind of processing method of industrial waste water of water outlet qualified discharge.
The invention provides a kind of processing method of industrial waste water, its technical scheme is as follows:
The present invention adopts physics method and the chemical method technology of coupling mutually, mainly burns three parts by pre-treatment, chemical treatment, sludge dewatering and forms.Pre-treatment is made up of grid, settling pit, equalizing tank, and sewage is removed big suspended substance, enters equalizing tank behind the settling pit sand setting through grid, is aided with pneumatic blending simultaneously in equalizing tank, to all with water quality, prevent that sludgd deposition from playing good action; Coagulant sedimentation is adopted in chemical treatment, utilizes coagulant polymeric aluminium chloride (PAC) that waste water is carried out purifying treatment; Sludge treating system adopt to concentrate, dehydration, burning process, and mud is thoroughly handled, and has eliminated secondary pollution.
The present invention has following beneficial effect: the present invention is simple to operate, and used coagulant polymeric aluminium chloride (PAC) wide material sources have flocculating effect efficiently, remove turbid rate height, and is little to the pH value influence of former water, good waste water treatment effect, but water outlet qualified discharge.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
The present invention adopts the technical finesse oil industry wastewater of physics and chemofacies coupling, and influent quality sees Table 1, and its concrete steps are:
(1) waste water is introduced into grid, and the grid inclination angle is 60 °, and interval of grid strip is 15mm, and when waste water flow through, the bulk pollutent that is suspended state was held back by grizzly bar and removed from waste water;
(2) water outlet enters settling pit again, removes inorganic particle, and retention time of sewage is 3 hours;
(3) water outlet enters equalizing tank, makes the water quality and the water yield keep relative stablizing, and guarantees that the subsequent disposal system is stable, and the residence time is 2 hours;
(4) water outlet enters coagulation reaction tank again, to wherein adding coagulant polymeric aluminium chloride (PAC) waste water is carried out purifying treatment, and stirs;
(5) water outlet enters second pond again and precipitates, and the residence time is 4 hours, and the gained supernatant liquor enters clean water basin; Supernatant liquor is pumped into the tubular fibre film filter, remove hardly degraded organic substance and salt; The tubular fibre membrane pore size that adopts is 0.1～0.3 micron, and flux is controlled at 100～130L/ (m
2H), the recoil time is 10～15 minutes.
Discharge water reaches integrated wastewater discharge standard (GB8978-1996) primary standard after treatment, and effluent quality sees Table 2.
Table 1 raw water quality
| ??COD | ??BOD 5 | ??pH | Oil | ??SS | |
| ??680 | ??315 | ??6-9 | ??27.5 | ??123 | |
| Unit | ??mg/L | ??mg/L | ??mg/L | ??mg/L |
Table 2 effluent quality (unit: mg/L)
| ??COD | ??BOD 5 | ??pH | Oil | ??SS | |
| ??89 | ??32.5 | ??7.8 | ??2.25 | ??27.9 | |
| Unit | ??mg/L | ??mg/L | ??mg/L | ??mg/L |
Claims (3)
1. processing method of industrial waste water, its technical scheme is as follows:
The present invention adopts physics method and the chemical method technology of coupling mutually, mainly burns three parts by pre-treatment, chemical treatment, sludge dewatering and forms.Pre-treatment is made up of grid, settling pit, equalizing tank, and sewage is removed big suspended substance, enters equalizing tank behind the settling pit sand setting through grid, is aided with pneumatic blending simultaneously in equalizing tank, to all with water quality, prevent that sludgd deposition from playing good action; Coagulant sedimentation is adopted in chemical treatment, utilizes coagulant polymeric aluminium chloride (PAC) that waste water is carried out purifying treatment; Sludge treating system adopt to concentrate, dehydration, burning process, and mud is thoroughly handled, and has eliminated secondary pollution.
2. a kind of processing method of industrial waste water according to claim 1 is characterized in that: described equalizing tank, the residence time is 2 hours.
3. a kind of processing method of industrial waste water according to claim 1 is characterized in that: the described second pond residence time is 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810117641A CN101643260A (en) | 2008-08-04 | 2008-08-04 | Method for treating industrial waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810117641A CN101643260A (en) | 2008-08-04 | 2008-08-04 | Method for treating industrial waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101643260A true CN101643260A (en) | 2010-02-10 |
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ID=41655352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810117641A Pending CN101643260A (en) | 2008-08-04 | 2008-08-04 | Method for treating industrial waste water |
Country Status (1)
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| CN (1) | CN101643260A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701477A (en) * | 2012-05-25 | 2012-10-03 | 宜兴市金鱼陶瓷有限公司 | Waste muddy water recycling system |
| CN103466766A (en) * | 2013-09-12 | 2013-12-25 | 安徽省绿巨人环境技术有限公司 | Technology for treating waste water of glass substrate production line |
| CN105481182A (en) * | 2015-12-25 | 2016-04-13 | 广东浚丰华科技有限公司 | System for treating wastewater in living quarters and treatment method thereof |
| CN105481164A (en) * | 2014-09-15 | 2016-04-13 | 江苏远兴环保集团有限公司 | Tobacco-waste-water processing technology |
| CN107215981A (en) * | 2017-06-16 | 2017-09-29 | 陕西火凤凰艺术陶瓷有限责任公司 | Ceramic production sewage recycles cyclic utilization system |
| CN107522312A (en) * | 2016-06-20 | 2017-12-29 | 南京梅山冶金发展有限公司 | A kind of weight, magnetic, floating beneficiation combined method produce useless water purification method |
| CN109231526A (en) * | 2018-11-01 | 2019-01-18 | 山西拓普沃特工程技术有限公司 | A kind of online desilting system of mine sump |
-
2008
- 2008-08-04 CN CN200810117641A patent/CN101643260A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701477A (en) * | 2012-05-25 | 2012-10-03 | 宜兴市金鱼陶瓷有限公司 | Waste muddy water recycling system |
| CN103466766A (en) * | 2013-09-12 | 2013-12-25 | 安徽省绿巨人环境技术有限公司 | Technology for treating waste water of glass substrate production line |
| CN105481164A (en) * | 2014-09-15 | 2016-04-13 | 江苏远兴环保集团有限公司 | Tobacco-waste-water processing technology |
| CN105481182A (en) * | 2015-12-25 | 2016-04-13 | 广东浚丰华科技有限公司 | System for treating wastewater in living quarters and treatment method thereof |
| CN107522312A (en) * | 2016-06-20 | 2017-12-29 | 南京梅山冶金发展有限公司 | A kind of weight, magnetic, floating beneficiation combined method produce useless water purification method |
| CN107215981A (en) * | 2017-06-16 | 2017-09-29 | 陕西火凤凰艺术陶瓷有限责任公司 | Ceramic production sewage recycles cyclic utilization system |
| CN109231526A (en) * | 2018-11-01 | 2019-01-18 | 山西拓普沃特工程技术有限公司 | A kind of online desilting system of mine sump |
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Open date: 20100210 |