CN102775001A - Method for treating ultrahigh-hardness and ultrahigh-conductivity waste water - Google Patents
Method for treating ultrahigh-hardness and ultrahigh-conductivity waste water Download PDFInfo
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- CN102775001A CN102775001A CN2012103046116A CN201210304611A CN102775001A CN 102775001 A CN102775001 A CN 102775001A CN 2012103046116 A CN2012103046116 A CN 2012103046116A CN 201210304611 A CN201210304611 A CN 201210304611A CN 102775001 A CN102775001 A CN 102775001A
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Abstract
The invention relates to a method for treating ultrahigh-hardness and ultrahigh-conductivity waste water. The method comprises the steps of: leading waste water of all ways to flow in a regulation pool, mixing and detecting the total hardness of the water, adding sodium carbonate in water with high hardness so as to generate indissolvable calcium carbonate with calcium in the water, thus achieving the purpose of softening water; electrifying an adsorption system, removing the majority of cations and anions in the water, purifying outflowing water after being adsorbed by the electrode until water reaches the standard to be directly recycled after flowing in a recycling pool. The method can effectively reduce the hardness and conductivity of the waste water, is simple and convenient for data observation, simple to operate, low in running cost, and high in outflow rate up to 90-96%, and can not cause secondary pollution due to introduction of new matters.
Description
Technical field
The present invention relates to technical field of waste water processing, specifically is a kind of method of handling extra-high-speed hardness extra-high-speed specific conductivity waste water.
Background technology
The Industrial products of metallurgy industry are various, and each becomes series Production Flow Chart, gives off great amount of wastewater, is the important waste water source of contaminate environment, and its complicated component is changeable, and the metallurgical waste water of extra-high-speed hardness extra-high-speed specific conductivity is again one of extremely unmanageable trade effluent.Recycle is important measures of metallurgical waste water treatment behind the processing waste water.
At present, handle in the method for high firmness high conductivity waste water, most popular is reverse osmosis membrane technology.But use the film system filtration behind certain hour, film system filtration effect can descend, and film needs cleaning and regeneration, and other parts are stopped, and treats to carry out filtration treatment again after membrane flux recovers.Use membrane separation technique that following shortcoming is arranged:
1. the life-span of film itself is short;
2. in the lifetime in 2-3 years, the treatment effect decay is fast;
3. cause system jams easily;
4. running cost is high;
5. average producing water ratio is less than 75%;
6. operation and maintenance bothers.
Summary of the invention
The purpose of this invention is to provide a kind of method of low-cost processes extra-high-speed hardness extra-high-speed specific conductivity waste water, can reduce hardness and specific conductivity in the waste water greatly, the water after the processing satisfies factory's reuse requirement, and non-secondary pollution, realizes the plant effuent zero release basically.
The concrete grammar of processing extra-high-speed hardness extra-high-speed specific conductivity waste water of the present invention is:
Step 1:
Each road waste water is flowed into equalizing tank mix the total hardness that water is detected in the back,<550 mg/L, pH value can directly get into step 2 7.5～11 the time and handle, as if total hardness>=550 mg/L when total hardness; This water is introduced the yellow soda ash agitated pool, and Xiang Shuizhong adds 20～35 minutes total hardnesss to water of yellow soda ash stirring, and<550 mg/>L are (after adding yellow soda ash; Can generate a large amount of lime carbonate in the water); Precipitate 3～6 hours, the supernatant of post precipitation gets into step 2 and handles, and all the other mud calciferous carry out solid-liquid separation through sludge pumping to sludge dewatering equipment; Water after the separation is got back to the yellow soda ash agitated pool, and solid carbonic acid calcium is available as raw material and sells market;
Step 2:
Supernatant after precipitating is well imported settling pond,, remove various fine particles, suspended impurity in the water through coarse filtration and finly filtration twice filtration system filters;
Step 3:
Water after filtering is imported the electro-adsorption system; Remove the most of zwitterion in the water through 1# electro-adsorption module; During the average conductivity of water outlet≤1500 μ s/cm, this water can get into reuse pool direct reuse (water of specific conductivity in 50～2500 μ s/cm scopes is normal range value); On average going out electrical conductivity of water>water of 1500 μ s/cm enters into the 1# intermediate pool;
Step 4:
Stop the work of 1# electro-adsorption module; The water of 1# intermediate pool is fed through firm 1# electro-adsorption module wash module of working; The water of wash module enters into the dense pond of 1#; Detect the total hardness and the total conductivity of dense water, if < < water directly enters into settling pond two method processing set by step to total hardness during 6500 μ s/cm for 550 mg/L, specific conductivity; If total hardness>550 mg/L, specific conductivity during 6500 μ s/cm, and enter into equalizing tank set by step one method handle, if specific conductivity>during 6500 μ s/cm, enter into step 5;
Step 5:
With specific conductivity>the 2# electro-adsorption module that imports in the electro-adsorption system of the water that derives from the dense pond of 1# of 6500 μ s/cm carries out dense water treatment; After handling; The water outlet average conductivity is back to an equalizing tank processing set by step again at the water of 2500～4000 μ s/cm; The water of water outlet average conductivity < 2500 o'clock directly get into reuse pool, water outlet average conductivity>4000 μ s/cm enters into the 2# intermediate pool;
Step 6:
The water of 2# intermediate pool is fed through firm 2# electro-adsorption module of working; The water that washes dense water module wash module enters into the dense pond of 2#; Detect the total conductivity of dense water; If water enters into the step 7 processing during total conductivity < water directly enters into equalizing tank processing again and again set by step during 8000 μ s/cm, if total conductivity>8000 μ s/cm;
Step 7:
Total conductivity>water in dense pond of 8000 μ s/cm is through evaporation (this water yield is few, accounts for the 4-10% of total treatment capacity greatly) after the vapo(u)rization system.
Principle of work:
Yellow soda ash is added in the entry, makes calcium in itself and the water generate the lime carbonate of indissoluble, reach the purpose that makes water softening (reaction formula be Ca (OH) 2+Na2CO3==CaCO3 ↓+2NaOH).To reduce the total hardness in the water, avoid under the simultaneously high situation of total hardness and sulfate ion, generating calcium sulfate, cause process pipeline to stop up, influence the treatment effect of rear end.
Can know that by electrochemistry basis theory solid electrode is immersed in the aqueous solution, and when applying voltage, at the two-phase interface place of solid electrode/solution, electric charge can distribute, arrange in minimum distance.By way of compensation, positively charged positive pole can attract the negative ion (opposite, negative pole will attract positive ion) in the solution, thereby forms electrostatic double layer.When water process electricity layer, the zwitterion in the water is purified thereby adsorb the effusive water in back through electrode respectively by positive and negative electrode absorption.
The present invention and prior art relatively have following positively effect:
1, can effectively reduce the hardness (hardness is reduced in the 450mg/L from 2500mg/L) of waste water;
2, can effectively reduce the specific conductivity (reducing to 1450) of waste water by 7000;
3, sulfate radical is reduced to 450mg/L from 3000mg/L, and cl ions is reduced to 130mg/L from 600mg/L;
4, through Chinese style half a year, do not find that removal effect has relaxation phenomenon;
5, the main raw life-span long (conservative estimation was greater than 5 years);
6, level of automation is high, and data observation is easy, simple to operate, but the unmanned fully automatic operation;
7, running cost is low, and running cost is at 1.8 yuan of-3.6 yuan of/ton water (according to raw water quality);
8, producing water ratio is up to 90%--96% (according to raw water quality);
9, passage width is the millimeter level, is difficult for stopping up;
10, do not introduce the secondary pollution that new material causes water.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
As shown in Figure 1, the method for processing extra-high-speed hardness extra-high-speed specific conductivity waste water of the present invention is undertaken by following:
Step 1:
Each road waste water is flowed into equalizing tank mix the total hardness that detects water after 15～20 minutes,<550 mg/L, pH value can directly get into step 2 7.5～11 the time and handle, as if total hardness>=550 mg/L when total hardness; This water is introduced the yellow soda ash agitated pool, and Xiang Shuizhong adds 20～35 minutes total hardnesss to water of yellow soda ash stirring, and<550 mg/>L are (after adding yellow soda ash; Can generate a large amount of lime carbonate in the water); Precipitate 3～6 hours, the supernatant of post precipitation gets into step 2 and handles, and all the other mud calciferous carry out solid-liquid separation through sludge pumping to sludge dewatering equipment; Water after the separation is got back to the yellow soda ash agitated pool, and solid carbonic acid calcium is available as raw material and sells market;
Step 2:
Supernatant after precipitating is well imported settling pond,, remove various fine particles, suspended impurity in the water through coarse filtration and finly filtration twice filtration system filters; Promptly earlier water is carried out prefiltration, remove the calcium carbonate granule or the suspended particle that possibly contain in the water, remove fine particle, tiny suspended impurity in the water with film security personnel filtering system again,, guarantee the treatment effect of rear end with the treatment facility of protection rear end with silica sand;
Step 3:
Water after filtering is imported electro-adsorption system (the electro-adsorption system can be made up of many covers electro-adsorption module); Remove the most of zwitterion in the water through 1# electro-adsorption module; During the average conductivity of water outlet≤1500 μ s/cm, this water can get into reuse pool direct reuse (water of specific conductivity in 50～2500 μ s/cm scopes is normal range value); On average going out electrical conductivity of water>water of 1500 μ s/cm enters into the 1# intermediate pool;
Step 4:
Stop 1# electro-adsorption module work (available other electro-adsorption module alternation this moment); The water of 1# intermediate pool is fed through firm 1# electro-adsorption module of working; After about 8～20 minutes of the wash module; The water of wash module enters into the dense pond of 1#, detects the total hardness and the total conductivity of dense water, if < < water directly enters into settling pond two method processing set by step to total hardness during 6500 μ s/cm for 550 mg/L, specific conductivity; If total hardness>550 mg/L, specific conductivity during 6500 μ s/cm, and enter into equalizing tank set by step one method handle, if specific conductivity>during 6500 μ s/cm, enter into step 5;
Step 5:
With specific conductivity>the 2# electro-adsorption module that imports in the electro-adsorption system of the water that derives from the dense pond of 1# of 6500 μ s/cm carries out dense water treatment; After handling; The water outlet average conductivity is back to an equalizing tank processing set by step again at the water of 2500～4000 μ s/cm; The water of water outlet average conductivity < 2500 o'clock directly get into reuse pool, water outlet average conductivity>4000 μ s/cm enters into the 2# intermediate pool;
Step 6:
The water of 2# intermediate pool is fed through firm 2# electro-adsorption module of working; About 8～20 minutes of wash module (this moment, 2# electro-adsorption module quit work); The water of wash module enters into the dense pond of 2#; Detect the total conductivity of dense water, water enters into the step 7 processing during as if total conductivity < water directly enters into equalizing tank processing again and again set by step during 8000 μ s/cm, if total conductivity>8000 μ s/cm;
Step 7:
Total conductivity>water in dense pond of 8000 μ s/cm is through evaporation (this water yield is few, accounts for the 4-10% of total treatment capacity greatly) after the vapo(u)rization system.
Claims (1)
1. a method of handling extra-high-speed hardness extra-high-speed specific conductivity waste water is pressed, and it is characterized in that carrying out according to the following steps:
Step 1:
Each road waste water is flowed into equalizing tank mix the total hardness that water is detected in the back;<550 mg/L, pH value can directly get into step 2 7.5～11 the time and handle, if total hardness>=550 mg/L introduce the yellow soda ash agitated pool with this water when total hardness; Xiang Shuizhong adds yellow soda ash and stirs 20～35 minutes<550 mg/>L of the total hardness to water; Precipitate 3～6 hours, the supernatant of post precipitation gets into step 2 and handles, and all the other mud calciferous are delivered to sludge dewatering equipment and carried out solid-liquid separation; Water after the separation is got back to the yellow soda ash agitated pool, and solid carbonic acid calcium is recycled;
Step 2:
Supernatant after precipitating is well imported settling pond,, remove various fine particles, suspended impurity in the water through coarse filtration and finly filtration twice filtration system filters;
Step 3:
Water after filtering is imported the electro-adsorption system; Remove the most of zwitterion in the water through 1# electro-adsorption module; During the average conductivity of water outlet≤1500 μ s/cm, this water can get into the reuse pool direct reuse, on average goes out electrical conductivity of water>water of 1500 μ s/cm enters into the 1# intermediate pool;
Step 4:
Stop the work of 1# electro-adsorption module; The water of 1# intermediate pool is fed through firm 1# electro-adsorption module of working; Wash module; The water of wash module enters into the dense pond of 1#, detects the total hardness and the total conductivity of dense water, if < < water directly enters into settling pond two method processing set by step to total hardness during 6500 μ s/cm for 550 mg/L, specific conductivity; If total hardness>550 mg/L, specific conductivity during 6500 μ s/cm, and enter into equalizing tank set by step one method handle, if specific conductivity>during 6500 μ s/cm, enter into step 5;
Step 5:
With specific conductivity>the 2# electro-adsorption module that imports in the electro-adsorption system of the water that derives from the dense pond of 1# of 6500 μ s/cm carries out dense water treatment; After handling; The water outlet average conductivity is back to an equalizing tank processing set by step again at the water of 2500～4000 μ s/cm; The water of water outlet average conductivity < 2500 o'clock directly get into reuse pool, water outlet average conductivity>4000 μ s/cm enters into the 2# intermediate pool;
Step 6:
The water of 2# intermediate pool is fed through firm 2# electro-adsorption module of working to be washed; The water of wash module enters into the dense pond of 2#; Detect the total conductivity of dense water; If water enters into the step 7 processing during total conductivity < water directly enters into equalizing tank processing again and again set by step during 8000 μ s/cm, if total conductivity>8000 μ s/cm;
Step 7:
Total conductivity>water in dense pond of 8000 μ s/cm is through evaporating after the vapo(u)rization system.
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| CN 201210304611 CN102775001B (en) | 2012-08-24 | 2012-08-24 | Method for treating ultrahigh-hardness and ultrahigh-conductivity waste water |
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| US20050103630A1 (en) * | 2003-11-13 | 2005-05-19 | United States Filter Corporation | Water treatment system and method |
| CN101412550A (en) * | 2007-10-16 | 2009-04-22 | 黄樟焱 | Electro-adsorption demineralization water purifier |
| CN101891330A (en) * | 2010-07-23 | 2010-11-24 | 深圳市能源环保有限公司 | Power plant wastewater treatment system and method |
| CN101928087A (en) * | 2009-06-26 | 2010-12-29 | 中国石油化工股份有限公司 | Method for treating high salinity wastewater |
| CN201990554U (en) * | 2011-01-17 | 2011-09-28 | 无锡德宝水务投资有限公司 | Recycling system of electronic-industry fluorine-containing and ammonia-nitrogen-containing waste water |
| CN102452751A (en) * | 2010-10-22 | 2012-05-16 | 中国石油化工股份有限公司 | Method of deep desalting and recycling of industrial effluent |
-
2012
- 2012-08-24 CN CN 201210304611 patent/CN102775001B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050103630A1 (en) * | 2003-11-13 | 2005-05-19 | United States Filter Corporation | Water treatment system and method |
| CN101412550A (en) * | 2007-10-16 | 2009-04-22 | 黄樟焱 | Electro-adsorption demineralization water purifier |
| CN101928087A (en) * | 2009-06-26 | 2010-12-29 | 中国石油化工股份有限公司 | Method for treating high salinity wastewater |
| CN101891330A (en) * | 2010-07-23 | 2010-11-24 | 深圳市能源环保有限公司 | Power plant wastewater treatment system and method |
| CN102452751A (en) * | 2010-10-22 | 2012-05-16 | 中国石油化工股份有限公司 | Method of deep desalting and recycling of industrial effluent |
| CN201990554U (en) * | 2011-01-17 | 2011-09-28 | 无锡德宝水务投资有限公司 | Recycling system of electronic-industry fluorine-containing and ammonia-nitrogen-containing waste water |
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Owner name: YUNNAN CHIHONG ZINC + GERMANIUM CO., LTD. Effective date: 20130416 |
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Inventor after: Sun Chengyu Inventor after: Yan Xiangshu Inventor after: Luo Yongguang Inventor after: Xie Yimin Inventor after: Yang Yuehong Inventor after: Wang Fan Inventor after: Jiang Song Inventor after: Xie Xiaoyan Inventor before: Jiang Song Inventor before: Xie Xiaoyan |
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Free format text: CORRECT: INVENTOR; FROM: JIANG SONG XIE XIAOYAN TO: SUN CHENGYU YAN XIANGSHU LUO YONGGUANG XIE YIMIN YANG YUEHONG WANG FAN JIANG SONG XIE XIAOYAN |
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Effective date of registration: 20130416 Address after: 650217, No. 1, No. 369, Pioneer Park, Kai Yuan District, Kunming, Yunnan Applicant after: Yunnan JHOW Technology Co., Ltd. Applicant after: Yunnan Chihong Zinc & Germanium Co., Ltd. Address before: 650217, No. 1, No. 369, Pioneer Park, Kai Yuan District, Kunming, Yunnan Applicant before: Yunnan JHOW Technology Co., Ltd. |
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