CN102627348B - Water treatment method for synchronously removing iron, manganese and arsenic in underground water - Google Patents
Water treatment method for synchronously removing iron, manganese and arsenic in underground water Download PDFInfo
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Abstract
The invention discloses a water treatment method for synchronously removing iron, manganese and arsenic in underground water, which relates to a water treatment method and is used for solving the technical problems of complexity, high cost and instable effluent water quality existing in the conventional process for treating Fe<2+>, Mn<2+> and As in underground water. The method comprises the following steps of: I, making raw water flow through a waterfall aeration system till the dissolved oxygen is 6-8 mg/L, and draining; II, culturing in a biological filter (2); III, stably running at the filtering speed of 4m/h for 7-10 days; and IV, stably running at the filtering speed of 5m/h for 7-10 days. According to the method, a process for treating Fe<2+>, Mn<2+> and As in underground water is simple, a large quantity of chemical agents are not required to be added, and the water quality of effluent water is consistent with the Sanitary Standard for Drinking Water (GB5749-2006). Due to the adoption of the method, the removing rate of Fe<2+> is 90-98 percent, the removing rate of Mn<2+> is 97-99 percent, and the removing rate of As (III) or As (V) is 96-98 percent.
Description
Technical field
The present invention relates to a kind of water treatment method.
Background technology
So far, the sick lesion of the drinking water type ground arsenic that China has found or high-As area are distributed in 13 provinces and regions, are respectively Xinjiang, Shanxi, the Inner Mongol, Ningxia, Qinghai, Anhui, Beijing, Shandong, Sichuan, Jilin, Heilungkiang, Henan and Taiwan.According to new " drinking water sanitary standard " (GB5749-2006), the population that Drinking Water in China surpasses this standard reaches 1,500 ten thousand, and the tap water arsenic content is too high to have become serious public health problem.
Underground water is one of important Freshwater resources of China, and certain areas underground water is unique resource of water supply.In underground water, because water and contact with air in the aqueous stratum are few, behind the oxygen depletion, underground water usually is reducing environment, under this environment, Fe often occurs
2+, Mn
2+Jointly be present in the underground water Fe
2+Existence can promote As under anaerobic environment, transfer in the water.So Fe
2+, Mn
2+, As usually coexists as in the underground water.
Use the Fe in the existing method processing underground water
2+, Mn
2+With the As complex process, some need to add a large amount of chemical agents, and cost is high, and effluent quality is unstable, and can with other by product, be difficult to use in production practice.Seek one simply, effectively, Fe in the economically viable processing underground water
2+, Mn
2+Particularly important with the method for As.
Summary of the invention
The present invention is in order to solve Fe in the existing processing underground water
2+, Mn
2+With the As complex process, cost is high, and the unsettled technical problem of effluent quality provides the water treatment method of iron, manganese, arsenic in a kind of synchronous removal underground water.
The water treatment method of removing synchronously iron, manganese, arsenic in the underground water is as follows:
One, former water is passed through drop water aeration system 1, the dissolved oxygen to drop water aeration system 1 is 6～8mg/L, water outlet;
Two, the cultivation of biological filter 2: the water outlet of drop water aeration system 1 enters biological filter 2, with the filtering velocity steady running of 2m/h～3m/h 3～5 months, and every 3～5 days with 12L/ (sm
2) back washing strength, the clear water of clean water basin 5 is used backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7, backwashing time is 3min, filtering layer 3 thickness of described biological filter 2 are 1.2～1.4m, filtrate in the filtering layer 3 is the biomembranous manganese sand of load or the biomembranous quartz sand of load, microbial film in the biomembranous manganese sand of load or the biomembranous quartz sand of load is comprised of a kind of biological demanganization deferrization functional bacterium and a kind of biological deferrization demanganization functional bacterium, the particle diameter of filtrate is 0.6mm～1.2mm, the height of biological filter 2 is 2.5～3m, the diameter of biological filter 2 compares greater than 60: 1 with the diameter of filtrate, the filter tank supporting layer 8 of biological filter 2 is the pebbles bed course, and the pebbles bed course is the pebbles of 5～10mm by the thick particle diameter of 10cm, the particle diameter that 10cm is thick is the pebbles of 10～20mm and is that the pebbles of 20～50mm forms by the thick particle diameter of 10cm;
Three, with the filtering velocity steady running of 4m/h 7～10 days, every 2～3 days with 12～14L/ (sm
2) back washing strength, with backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7 with the clear water of clean water basin 5, backwashing time is 3～5min;
Four, with the filtering velocity steady running of 5m/h 7～10 days, every 2～3 days with 12～14L/ (sm
2) back washing strength, with backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7 with the clear water of clean water basin 5, backwashing time is 3～5min, finishes the synchronous removal of iron in the underground water, manganese, arsenic.
The inventive method is processed Fe in the underground water
2+, Mn
2+Simple with the technique of As, need not add a large amount of chemical agents, effluent quality meets " drinking water sanitary standard " (GB5749-2006).The inventive method is to Fe
2+Clearance 90%～98%, Mn
2+Clearance 97%～99%, As (III) or As (V) clearance 96%～98%.
Description of drawings
Fig. 1 is water treatment process synoptic diagram of the present invention, 1 expression drop water aeration system among the figure, and 2 expression biological filters, 3 expression filtering layers, 4 express the pool, 5 expression clean water basin, 6 expression backwash pumps, 7 expression overflow ports, 8 expression filter tank supporting layers.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: it is as follows that present embodiment is removed the water treatment method of iron in the underground water, manganese, arsenic synchronously:
One, former water is passed through drop water aeration system 1, the dissolved oxygen to drop water aeration system 1 is 6～8mg/L, water outlet;
Two, the cultivation of biological filter 2: the water outlet of drop water aeration system 1 enters biological filter 2, with the filtering velocity steady running of 2m/h～3m/h 3～5 months, and every 3～5 days with 12L/ (sm
2) back washing strength, the clear water of clean water basin 5 is used backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7, backwashing time is 3min, filtering layer 3 thickness of described biological filter 2 are 1.2～1.4m, filtrate in the filtering layer 3 is the biomembranous manganese sand of load or the biomembranous quartz sand of load, microbial film in the biomembranous manganese sand of load or the biomembranous quartz sand of load is comprised of a kind of biological demanganization deferrization functional bacterium and a kind of biological deferrization demanganization functional bacterium, the particle diameter of filtrate is 0.6mm～1.2mm, the height of biological filter 2 is 2.5～3m, the diameter of biological filter 2 compares greater than 60: 1 with the diameter of filtrate, the filter tank supporting layer 8 of biological filter 2 is the pebbles bed course, and the pebbles bed course is the pebbles of 5～10mm by the thick particle diameter of 10cm, the particle diameter that 10cm is thick is the pebbles of 10～20mm and is that the pebbles of 20～50mm forms by the thick particle diameter of 10cm;
Three, with the filtering velocity steady running of 4m/h 7～10 days, every 2～3 days with 12～14L/ (sm
2) back washing strength, with backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7 with the clear water of clean water basin 5, backwashing time is 3～5min;
Four, with the filtering velocity steady running of 5m/h 7～10 days, every 2～3 days with 12～14L/ (sm
2) back washing strength, with backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7 with the clear water of clean water basin 5, backwashing time is 3～5min, finishes the synchronous removal of iron in the underground water, manganese, arsenic.
Meet " drinking water sanitary standard " (GB5749-2006) through the water outlet after the present embodiment processing.
The biomembranous manganese sand of load described in the present embodiment step 2 or the biomembranous process of the biomembranous quartz sand load of load are as follows:
The water that has added a kind of biological demanganization deferrization functional bacterium and a kind of biological deferrization demanganization functional bacterium is entered biological filter 2, with the filtering velocity steady running of 2m/h～3m/h 3～5 months, and every 3～5 days with 12L/ (sm
2) back washing strength, the clear water of clean water basin 5 is used backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7, backwashing time is 3min, filtering layer 3 thickness of described biological filter 2 are 1.2～1.4m, filtrate in the filtering layer 3 is manganese sand or quartz sand, the particle diameter of filtrate is 0.6mm～1.2mm, the height of biological filter 2 is 2.5～3m, the diameter of biological filter 2 compares greater than 60: 1 with the diameter of filtrate, the filter tank supporting layer 8 of biological filter 2 is the pebbles bed course, the pebbles bed course is the pebbles of 5～10mm by the thick particle diameter of 10cm, the particle diameter that 10cm is thick is the pebbles of 10～20mm and is that the pebbles of 20～50mm forms by the thick particle diameter of 10cm, the organism in water demanganization deferrization functional bacterium content that has wherein added a kind of biological demanganization deferrization functional bacterium and a kind of biological deferrization demanganization functional bacterium is 30mg/L, and the content of biological deferrization demanganization functional bacterium is 30mg/L.
A kind of biological demanganization deferrization functional bacterium described in the present embodiment is in the applying date that January 7, the patent No. in 2008 are 200810063814.4, patent name is for open in the patent of " a kind of biological demanganization deferrization functional bacterium ", biological demanganization deferrization functional bacterium MS604 (Sphingobacterium sp.) belongs to Sphingobacterium, be preserved in China Committee for Culture Collection of Microorganisms common micro-organisms center, preservation date is on October 30th, 2007, and preserving number is CGMCC No.2240.
A kind of biological deferrization demanganization functional bacterium described in the present embodiment is in the applying date that January 7, the patent No. in 2008 are 200810063811.0, patent name is for open in the patent of " a kind of biological deferrization demanganization functional bacterium ", biological deferrization demanganization functional bacterium MSB-4 (Chryseobacterium sp.) belongs to Chryseobacterium, be preserved in China Committee for Culture Collection of Microorganisms common micro-organisms center, preservation date is on October 30th, 2007, and preserving number is CGMCC No.2239.
Embodiment two: present embodiment and embodiment one are different is that dissolved oxygen in the system of drop water aeration described in the step 11 is 7mg/L.Other is identical with embodiment one.
Embodiment three: present embodiment is different from embodiment one or two was that the water outlet of the system of drop water aeration described in the step 21 enters biological filter 2, with the filtering velocity steady running of 2.5m/h 4 months.Other is identical with embodiment one or two.
Embodiment four: present embodiment is different from one of embodiment one to three is that filtering layer 3 thickness of biological filter described in the step 22 are 1.3m.Other is identical with one of embodiment one to three.
Embodiment five: present embodiment is different from one of embodiment one to four be in the step 2 every 4 days with 12L/ (sm
2) back washing strength, with the clear water of clean water basin 5 with backwash pump 6 back flushing biological filters 2.Other is identical with one of embodiment one to four.
Embodiment six: present embodiment is different from one of embodiment one to five is that the particle diameter of filtrate described in the step 2 is 0.7mm～1.1mm.Other is identical with one of embodiment one to five.
Embodiment seven: present embodiment is different from one of embodiment one to five is that the particle diameter of filtrate described in the step 2 is 0.8mm～1mm.Other is identical with one of embodiment one to five.
Embodiment eight: present embodiment is different from one of embodiment one to five is that the particle diameter of filtrate described in the step 2 is 0.9mm.Other is identical with one of embodiment one to five.
Embodiment nine: present embodiment is different from one of embodiment one to eight be in the step 3 with the filtering velocity steady running of 4m/h 8 days, every 2 days with 13L/ (sm
2) back washing strength, with the clear water of clean water basin 5 with backwash pump 6 back flushing biological filters 2.Other is identical with one of embodiment one to eight.
Embodiment ten: present embodiment is different from one of embodiment one to nine is step 4 with the filtering velocity steady running of 5m/h 9 days, every 3 days with 13L/ (sm
2) back washing strength, with the clear water of clean water basin 5 with backwash pump 6 back flushing biological filters 2.Other is identical with one of embodiment one to nine.
Adopt following experimental verification effect of the present invention in the present embodiment:
Experiment one:
The water treatment method of removing synchronously iron, manganese, arsenic in the underground water is as follows:
One, former water is passed through drop water aeration system 1, the dissolved oxygen to drop water aeration system 1 is 8mg/L, water outlet;
Two, the cultivation of biological filter 2: the water outlet of drop water aeration system 1 enters biological filter 2, with the filtering velocity steady running of 3m/h 3 months, and every 5 days with 12L/ (sm
2) back washing strength, the clear water of clean water basin 5 is used backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7, backwashing time is 3min, filtering layer 3 thickness of described biological filter 2 are 1.4m, biological filter 2 highly is 2.8m, diameter is 100mm, filtrate in the filtering layer 3 is the biomembranous Mashan of load manganese sand, the biomembranous Mashan of load manganese sand is comprised of a kind of biological demanganization deferrization functional bacterium and a kind of biological deferrization demanganization functional bacterium, the particle diameter of filtrate is 1mm, the filter tank supporting layer 8 of biological filter 2 is the pebbles bed course, and the pebbles bed course is the pebbles of 10mm by the thick particle diameter of 10cm, the particle diameter that 10cm is thick is the pebbles of 10mm and is that the pebbles of 20mm forms by the thick particle diameter of 10cm;
Three, with the filtering velocity steady running of 4m/h 10 days, every 3 days with 13L/ (sm
2) back washing strength, with backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7 with the clear water of clean water basin 5, backwashing time is 5min;
Four, with the filtering velocity steady running of 5m/h 9 days, every 93 days with 13L/ (sm
2) back washing strength, with backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7 with the clear water of clean water basin 5, backwashing time is 3min, finishes the synchronous removal of iron in the underground water, manganese, arsenic.
Fe in the former water described in this experiment
2+Concentration 2mg/L, Mn
2+Concentration 1mg/L, As (III) or As (V) concentration 200 μ g/L, the pH value is 8, and dissolved oxygen is 8mg/L, and temperature is 16 ℃.
Water-quality guideline such as table 1 after this experimental technique of process is processed:
Table 1
Meet " drinking water sanitary standard " (GB5749-2006) through the water outlet after this experiment processing.
Experiment two:
The water treatment method of removing synchronously iron, manganese, arsenic in the underground water is as follows:
One, former water is passed through drop water aeration system 1, the dissolved oxygen to drop water aeration system 1 is 8mg/L, water outlet;
Two, the cultivation of biological filter 2: the water outlet of drop water aeration system 1 enters biological filter 2, with the filtering velocity steady running of 3m/h 4 months, and every 5 days with 12L/ (sm
2) back washing strength, the clear water of clean water basin 5 is used backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7, backwashing time is 3min, filtering layer 3 thickness of described biological filter 2 are 1.4m, filtrate in the filtering layer 3 is the biomembranous quartz sand of load, the biomembranous quartz sand of load is comprised of a kind of biological demanganization deferrization functional bacterium and a kind of biological deferrization demanganization functional bacterium, the particle diameter of filtrate is 0.6mm, the filter tank supporting layer 8 of biological filter 2 is the pebbles bed course, and the pebbles bed course is the pebbles of 10mm by the thick particle diameter of 10cm, the particle diameter that 10cm is thick is the pebbles of 10mm and is that the pebbles of 20mm forms by the thick particle diameter of 10cm;
Three, with the filtering velocity steady running of 4m/h 10 days, every 3 days with 13L/ (sm
2) back washing strength, with backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7 with the clear water of clean water basin 5, backwashing time is 5min;
Four, with the filtering velocity steady running of 5m/h 9 days, every 93 days with 13L/ (sm
2) back washing strength, with backwash pump 6 back flushing biological filters 2, backwashing water flows out through overflow port 7 with the clear water of clean water basin 5, backwashing time is 3min, finishes the synchronous removal of iron in the underground water, manganese, arsenic.
Fe in the former water described in this experiment
2+Concentration 2mg/L, Mn
2+Concentration 1mg/L, As (III) or As (V) concentration 200 μ g/L, the pH value is 8, and dissolved oxygen is 8mg/L, and temperature is 16 ℃.
Water-quality guideline such as table 2 after this experimental technique of process is processed:
Table 2
Meet " drinking water sanitary standard " (GB5749-2006) through the water outlet after this experiment processing.
Claims (10)
1. remove synchronously the water treatment method of iron in the underground water, manganese, arsenic, the water treatment method that it is characterized in that removing synchronously iron in the underground water, manganese, arsenic is as follows:
One, former water is passed through drop water aeration system (1), the dissolved oxygen to drop water aeration system (1) is 6～8mg/L, water outlet;
Two, the cultivation of biological filter (2): the water outlet of drop water aeration system (1) enters biological filter (2), with the filtering velocity steady running of 2m/h～3m/h 3～5 months, and every 3～5 days with 12L/ (sm
2) back washing strength, the clear water of clean water basin (5) is used backwash pump (6) back flushing biological filter (2), backwashing water flows out through overflow port (7), backwashing time is 3min, filtering layer (3) thickness of described biological filter (2) is 1.2～1.4m, filtrate in the filtering layer (3) is the biomembranous manganese sand of load or the biomembranous quartz sand of load, microbial film in the biomembranous manganese sand of load or the biomembranous quartz sand of load is comprised of a kind of biological demanganization deferrization functional bacterium MS604 and a kind of biological deferrization demanganization functional bacterium MSB-4, the particle diameter of filtrate is 0.6mm～1.2mm, the height of biological filter (2) is 2.5～3m, the diameter of biological filter (2) compares greater than 60 ﹕ 1 with the diameter of filtrate, the filter tank supporting layer (8) of biological filter (2) is the pebbles bed course, and the pebbles bed course is the pebbles of 5～10mm by the thick particle diameter of 10cm, the particle diameter that 10cm is thick is the pebbles of 10～20mm and is that the pebbles of 20～50mm forms by the thick particle diameter of 10cm;
Three, with the filtering velocity steady running of 4m/h 7～10 days, every 2～3 days with 12～14L/ (sm
2) back washing strength, with backwash pump (6) back flushing biological filter (2), backwashing water flows out through overflow port (7) with the clear water of clean water basin (5), backwashing time is 3～5min;
Four, with the filtering velocity steady running of 5m/h 7～10 days, every 2～3 days with 12～14L/ (sm
2) back washing strength, with backwash pump (6) back flushing biological filter (2), backwashing water flows out through overflow port (7) with the clear water of clean water basin (5), backwashing time is 3～5min, finishes the synchronous removal of iron in the underground water, manganese, arsenic.
2. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 is characterized in that the dissolved oxygen in the system of drop water aeration described in the step 1 (1) is 7mg/L.
3. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 and 2 is characterized in that the water outlet of the system of drop water aeration described in the step 2 (1) enters biological filter (2), with the filtering velocity steady running of 2.5m/h 4 months.
4. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 and 2 is characterized in that filtering layer (3) thickness of biological filter described in the step 2 (2) is 1.3m.
5. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 and 2 is characterized in that in the step 2 every 4 days with 12L/ (sm
2) back washing strength, with the clear water of clean water basin (5) with backwash pump (6) back flushing biological filter (2).
6. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 and 2, the particle diameter that it is characterized in that filtrate described in the step 2 is 0.7mm～1.1mm.
7. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 and 2, the particle diameter that it is characterized in that filtrate described in the step 2 is 0.8mm～1mm.
8. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 and 2, the particle diameter that it is characterized in that filtrate described in the step 2 is 0.9mm.
9. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 and 2 is characterized in that in the step 3 with the filtering velocity steady running of 4m/h 8 days, every 2 days with 13L/ (sm
2) back washing strength, with the clear water of clean water basin (5) with backwash pump (6) back flushing biological filter (2).
10. the water treatment method of iron, manganese, arsenic in the described synchronous removal underground water according to claim 1 and 2 is characterized in that step 4 with the filtering velocity steady running of 5m/h 9 days, every 3 days with 13L/ (sm
2) back washing strength, with the clear water of clean water basin (5) with backwash pump (6) back flushing biological filter (2).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923841A (en) * | 2012-11-12 | 2013-02-13 | 北京工业大学 | Underwater As3+ efficient biological oxidation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103130325B (en) * | 2013-03-21 | 2014-04-16 | 哈尔滨工业大学 | Biological filter culture method and water treatment method for underground water |
| CN103613202A (en) * | 2013-06-05 | 2014-03-05 | 大连恒基新润水务有限公司 | Optimization culture method of biomembrane microfloras |
| CN104445829B (en) * | 2014-12-15 | 2015-12-30 | 东北农业大学 | The biological synchronous treatment process removing high-iron and high manganese in underground drinking water of a kind of cold condition |
| CN106745665A (en) * | 2017-03-29 | 2017-05-31 | 珠海京工检测技术有限公司 | A kind of device and method for improving biological deferrization manganese efficiency |
| CN110272167B (en) * | 2019-06-28 | 2021-12-28 | 武汉环天禹生物环保科技有限公司 | Mine wastewater treatment system based on carbon fibers and underground water decontamination process |
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| US4765892A (en) * | 1984-08-29 | 1988-08-23 | Applied Industrial Materials Corporation | Sand filter media and an improved method of purifying water |
| US4892658A (en) * | 1988-03-17 | 1990-01-09 | Martin Joseph P | Wastewater treatment system |
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| CN102923841A (en) * | 2012-11-12 | 2013-02-13 | 北京工业大学 | Underwater As3+ efficient biological oxidation method |
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