CN1068799A - The processing of trade effluent and reuse method - Google Patents
The processing of trade effluent and reuse method Download PDFInfo
- Publication number
- CN1068799A CN1068799A CN 91104740 CN91104740A CN1068799A CN 1068799 A CN1068799 A CN 1068799A CN 91104740 CN91104740 CN 91104740 CN 91104740 A CN91104740 A CN 91104740A CN 1068799 A CN1068799 A CN 1068799A
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- China
- Prior art keywords
- water
- processing
- trade effluent
- filter bed
- iron filing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
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- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the waste iron filing is the Industrial Wastewater Treatment and the reuse method of main raw material.Trade effluent transfers to slightly acidic with spent acid alkali or acidic and alkaline wastewater when equalizing tank, after pre-sedimentation, and the electrochemical agglomeration filter bed of flowing through from bottom to top and filling with waste iron filing.The water that comes out from bed adds liming at once and is neutralized to weakly alkaline, rouses pneumatic blending simultaneously.Behind secondary settlement, the water reusable edible.Present method equipment is manufactured simply, and cost and running expense are low, is suitable for printing and dyeing, the processing and the reuse of industry waste water such as chemical industry, food, coking.
Description
The present invention relates to processing method of industrial waste water.
As everyone knows, the environmental pollution that trade effluent causes is quite serious, and majority is difficult to handle reuse.
For many years, people are studying the processing and the reuse method of trade effluent always.At present, treatment process mainly contains: biochemical process, Coagulation Method, absorption method, chemical oxidization method etc.These methods, the cost that has is higher, and the soil removal efficiency that has is low, and the shipwreck after the processing is with reuse.In recent years, utilize waste iron filing or iron powder to handle the waste water that contains heavy metal ion, all obtain certain effect both at home and abroad.Recently, the research report of printing and dyeing or waste water from dyestuff has successively appearred handling with iron filings in states such as the Soviet Union, Switzerland, but all clean of unresolved iron filings and Fe
2+Effective utilization and removal problem, only be in the preliminary study stage.
It is low to the purpose of this invention is to provide a kind of cost, the soil removal efficiency height, and the trade effluent after the processing can all or part of cyclic utilization method.
Characteristics of the present invention are to prevent iron filings caking, obstruction and channel in the electrochemical agglomeration filter bed, make full use of nascent state Fe
2+And Fe
3+Strong throwing out.Its solution is: in electrochemical agglomeration filter bed, waste water flows from bottom to top, remains one section water column above the waste iron filing, can prevent the iron filings caking.Load from bottom to top by the order that the waste iron filing granularity is descending, can prevent channel.If bed inactivation or be blocked can be regenerated by back flushing.Water transfers to slightly acidic before advancing bed, after coming out from bed, adds liming and blowing air at once and stirs, and utilizes nascent state Fe
2+And Fe
3+Active and synergy, improve flocculating effect, make water outlet reach the degree of reuse.By changing the collocation mode and the proportioning of filler in the electrochemical agglomeration filter bed, improve its detersive efficiency and suitability.Collocation mode has and utilizes waste iron filing separately, and waste iron filing and gac, coke, Graphite Electrodes, aluminium bits etc. load in mixture.
Fig. 1 has described the complete operational path of the present invention.
Fig. 2 handles and the reuse technology route for coal gas waste.
Among Fig. 1, after waste water imported wastewater equalization pond [2] by each workshop of factory [1], [3] the suction PH regulating reservoir [4] that switches on the pump transferred PH to faintly acid with acid. Switch on the pump [3], make Waste water is from bottom to top by being equipped with the electrochemical agglomeration filter bed [5] of waste iron filing, and the water that comes out from bed flows into efficient flocculating reaction tank [6], starts subsequently air pressure pump [7], adds limewash to alkalescent. Water flows into inclined plate sedimentation pond [8] after the reaction, and the top primary water is squeezed into water head tank [9] by water pump [3], for recycling. Bottom mud is extracted out by sludge pump [10], send steel mill or brick field [11] after the dehydration.
Among Fig. 2, after gasworks [12] gas washing wastewater enters storage cistern [13], squeeze into preliminary sedimentation tank [14] by water pump [3]. Water flows into electrochemical agglomeration filter bed group [15] behind the preliminary sedimentation, and water (flow) direction is the side bottom inflow from bed, to the bed top, flows into next one bed one side bottom through iron filings again. So repeatedly flow into second pond [16] after five times, switch on the pump [3] squeeze into cooling tower [17], enter cistern [18] after the cooling, return recycling through further cooling by water pump [3].
Water quality detection after the processing: detect with standard method of analysis, after the usefulness of electrochemical agglomeration filter bed is reduced to a certain degree, use the sour water back flushing, just can continue operation.
Advantage of the present invention:, prevented the caking of iron filings simply by water seal; Load bed from bottom to top by the order that the waste iron filing granularity is descending, prevented channel; Utilize back flushing, solved the obstruction and the inactivation of iron filings; By pneumatic blending, made full use of nascent state Fe
2+And Fe
3+Strong flocculation activity, and the two synergy makes and handles back water and reach the partly or entirely degree of reuse; Filler in the electrification agglomeration filter bed is replaceable, and this technology can be used for dyeing waste water, gas washing wastewater, food plant wastewater, the processing of wastewater from chemical industry etc. and reuse.Realized the purpose of the treatment of wastes with processes of wastes against one another, had equipment and manufacture simply, detersive efficiency height, the characteristics that processing costs is low.
Embodiment 1: with COD-316mg/l, the dyeing waste water of PH=11 with water pump [3] suction PH equalizing tank, is regulated PH=5～6 with sulfur waste acid.Switch on the pump [3] make the waste water electrochemical agglomeration filter bed of flowing through, when flowing into the efficient flocculating reaction tank by electrochemical agglomeration filter bed, adding liming accent pH value is more than 8, starts air compressor pump [7] air-blowing and stirs, the air-blowing amount is 10～15l/hl, and the reaction back flows into the inclined plate sedimentation pond.Top, pond primary water is squeezed into water head tank by water pump [3], for recycle.Bottom sludge pump [10] is extracted out, send steelworks or brick field [11] after the dehydration.
Embodiment 2: with PH ≈ 8, COD ≈ 340mg/l, turbid floating thing, sulphur, cyanogen, ammonia nitrogen concentration are about 125,6,27 respectively, the coal gas waste of 149mg/l, with water pump [3] suction preliminary sedimentation tank.Flow into electrochemical agglomeration filter bed group (five series connection) by the water that comes out in the pond, be filled with waste iron filing and Graphite Electrodes in the bed, the two mass ratio is about waste iron filing: Graphite Electrodes=10～50: 1.Flow out water and enter second pond from bed, switch on the pump [3] squeeze into water cooling tower, flow into water reservoir.Switch on the pump [3] return recycle.The PH ≈ 8.2 of recirculated water, COD=134mg/l, turbid floating thing, sulphur, cyanogen, ammonia nitrogen concentration are respectively 73,0.03,2.5,97mg/l.
The treatment and reuse method of industrial wastewater provided by the present invention can be widely used in the processing of industrial wastewater, sanitary wastewater, and have equipment and manufacture simply, small investment, the detersive efficiency height, the advantage such as disposal cost is low has widely dissemination.
Claims (7)
1, a kind of processing of trade effluent and reuse method, it is to be a kind of method that main raw material is handled trade effluent with waste iron filing, it is characterized in that: waste water is flowed through from bottom to top and is loaded the electrochemical agglomeration filter bed that forms with waste iron filing; Remain one section water column above the filler in the bed; What flow out from bed contains Fe
2+Water, stir and to be removed fully and to use by adding alkali.
2, by the processing and the reuse method of the described trade effluent of claim 1, it is characterized in that: the water colunm height that filler keeps above in the described electrochemical agglomeration filter bed is 100～1500 millimeters.
3, the processing of trade effluent according to claim 1 and reuse method, it is characterized in that: the filler in the described electrochemical agglomeration filter bed except that independent use waste iron filing, but also waste iron filing and gac, coke, Graphite Electrodes, aluminium bits etc. one or more use with.
4, the processing of trade effluent according to claim 1 and reuse method is characterized in that: after water comes out from electrochemical agglomeration filter bed, add lime drum pneumatic blending at once.The unslaked lime dosage is 10～120mg/l, and the air amount of blasting is 10～20l/h.l.
5, the processing of trade effluent according to claim 1 and reuse method is characterized in that: the filler in the electrochemical agglomeration filter bed, during filling, load from bottom to top by the order that its granularity is descending.
6, the processing of trade effluent according to claim 1 and reuse method, it is characterized in that: the filler ratio of mixture of described electrochemical agglomeration filter bed is a waste iron filing: gac (or coke)=10～100: 1, waste iron filing: Graphite Electrodes=5～50: 1, waste iron filing: aluminium scrap bits=1～100: 1(is mass ratio entirely).
7, the processing of trade effluent according to claim 1 and reuse method is characterized in that: before waste water advances electrochemical agglomeration filter bed, can not transfer to slightly acidic, corresponding water outlet can not add the alkali flocculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91104740 CN1068799A (en) | 1991-07-13 | 1991-07-13 | The processing of trade effluent and reuse method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91104740 CN1068799A (en) | 1991-07-13 | 1991-07-13 | The processing of trade effluent and reuse method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1068799A true CN1068799A (en) | 1993-02-10 |
Family
ID=4906788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91104740 Pending CN1068799A (en) | 1991-07-13 | 1991-07-13 | The processing of trade effluent and reuse method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1068799A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301914C (en) * | 2005-02-02 | 2007-02-28 | 大同市煤气化总公司 | Technology for treating waste water generated by coking |
| CN102351280A (en) * | 2011-09-14 | 2012-02-15 | 北京大学深圳研究生院 | Method for treating leachate containing cadmium slags by utilizing electric flocculation method |
| CN102596077A (en) * | 2009-07-02 | 2012-07-18 | 阿维维德水技术有限公司 | Turboelectric coagulation apparatus |
| US9145313B2 (en) | 2009-07-02 | 2015-09-29 | Avivid Water Technology, Llc | Turboelectric coagulation apparatus |
-
1991
- 1991-07-13 CN CN 91104740 patent/CN1068799A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301914C (en) * | 2005-02-02 | 2007-02-28 | 大同市煤气化总公司 | Technology for treating waste water generated by coking |
| CN102596077A (en) * | 2009-07-02 | 2012-07-18 | 阿维维德水技术有限公司 | Turboelectric coagulation apparatus |
| CN102596077B (en) * | 2009-07-02 | 2015-06-17 | 阿维维德水技术有限公司 | Turboelectric coagulation apparatus |
| US9145313B2 (en) | 2009-07-02 | 2015-09-29 | Avivid Water Technology, Llc | Turboelectric coagulation apparatus |
| CN102351280A (en) * | 2011-09-14 | 2012-02-15 | 北京大学深圳研究生院 | Method for treating leachate containing cadmium slags by utilizing electric flocculation method |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |