CN112573764A - Multistage barrier modularized drinking water grading treatment system - Google Patents
Multistage barrier modularized drinking water grading treatment system Download PDFInfo
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides a multistage barrier modularized drinking water graded treatment system, which comprises a pretreatment module, a conventional treatment module, an advanced treatment module, a high-quality water production module and an emergency wind control module, wherein the pretreatment module, the conventional treatment module, the advanced treatment module and the high-quality water production module are communicated by a pipeline and a control valve, the tail ends of the pretreatment module, the conventional treatment module, the advanced treatment module and the high-quality water production module are respectively provided with an independent water outlet, the emergency wind control module is electrically connected with the control valve, and different module combinations are adopted according to different standards of inlet water quality and outlet water quality. The invention forms a multi-stage barrier by the mutual combination of different modules, sets a proper drinking water treatment route aiming at different water inlet qualities, different pollutant types and different water outlet standards, and has the advantages of flexibility, high efficiency, economy, practicality, safety, reliability, good water outlet quality and the like.
Description
Technical Field
The invention relates to the technical field of drinking water treatment, in particular to a multi-stage barrier modularized drinking water grading treatment system.
Background
With the dramatic increase in population and the rapid development of social productivity, the problem of water pollution is more and more prominent. On one hand, the quantity of pollutants generated is increased along with the increase of activities such as human production, life and the like, so that the water quality of a drinking water source is gradually deteriorated, meanwhile, with the development of scientific technology, the invention and application of various detection instruments enable the detected pollutants in water to be gradually increased, on the other hand, with the improvement of the living standard of people, people not only can satisfy the requirements of getting full of people and getting warm, but also have higher requirements on the living quality, so that the outgoing water quality of the drinking water is more strictly required by the public, and the water quality standard of China is gradually improved. For drinking water treatment units or enterprises, two contradictions are generally faced at present, namely a contradiction between the gradual deterioration of raw water quality and higher requirement on effluent water quality, and a contradiction between high effluent water quality and high drinking water treatment cost. In addition, most drinking water treatment units in China still face a serious practical problem that the backward treatment process cannot adapt to the increasingly variable drinking water supply situation gradually. These problems are particularly manifested in the following points:
firstly, the existing treatment process has high requirements on the quality of raw water, once sudden pollution events occur to source water or the quality of the raw water exceeds the standard, the existing treatment process causes the treatment effect of the subsequent process to be reduced so that the quality of effluent water is poor, and causes the quality of the effluent water not to reach the effluent water quality standard, thereby bringing inconvenience to production and life of people and even harming the health of people; the prior Chinese invention patent adopts an integrated emergency drinking water treatment process and device of flocculation air flotation, activated carbon adsorption and ozone sterilization combined process, can deal with water pollution events under emergency conditions, and still has the problems of limited application range and poor water quality impact capability, and the device is suitable for small emergency treatment. The invention also discloses a method for improving the removal rate of ammonia nitrogen pollutants by adding sodium hypochlorite into raw water polluted by ammonia nitrogen, and cooperating with ozone oxidation and modified powdered activated carbon adsorption, and the method can effectively solve the problems of poor removal effect and high disinfection by-products of sudden ammonia nitrogen pollution of the raw water by the conventional treatment process of a water plant, but also has the problems of complex pretreatment process of the activated carbon, narrow application range of the method and the like.
Secondly, most of the existing processes can only treat part of pollutants in the water body, such as some suspended matters, colloids, part of bacteria and the like, while for some novel organic pollutants, (antibiotics, resistance genes and the like), Persistent Organic Pollutants (POPs), inorganic pollutants and biological pollutants (microcystis, "two-worm problem" and the like), the existing treatment processes are difficult to remove the trace or even trace novel pollutants, and the water quality of the effluent is influenced; the invention provides a process for efficiently treating micro-polluted source water, which is provided by the invention and solves the problem of difficult complex and various treatment of the micro-polluted source water by utilizing the coupling action of activated carbon adsorption and electrochemical flocculation. The invention also discloses a method for treating organic pollutants in raw water by combining ozone ultraviolet advanced oxidation and powdered activated carbon adsorption before a conventional water treatment process, which can solve the problems of high treatment cost, resource waste and the like caused by low treatment efficiency of the organic pollutants, single treatment method, incapability of flexibly treating and judging the quality of inlet water and the like.
Thirdly, although some drinking water treatment units improve the treatment process for improving the quality of the effluent, for example, a pretreatment process, a conventional treatment process and an advanced treatment process are added. Although these measures have some effect on improving the quality of the effluent, an unavoidable problem still remains, namely that the addition of these processes and techniques will inevitably lead to higher water treatment costs.
The above problems are not isolated and may exist in some or all of the drinking water treatment facilities or enterprises, but in any case they are required to provide the public with safe and healthy drinking water. For the reasons, there is an urgent need for a flexible, efficient and economical drinking water treatment technique that can not only provide a high operational capacity for the quality of complex raw water, but also effectively remove the vast majority of pollutants detected by the prior art, and at the same time can control the water treatment cost within an acceptable range.
Disclosure of Invention
The invention aims to provide a multistage barrier modularized drinking water graded treatment system, which forms a multistage barrier by combining different modules, sets a proper drinking water treatment route aiming at different inlet water quality, different pollutant types and different outlet water standards, and has the advantages of flexibility, high efficiency, economy, practicability, safety, reliability, good outlet water quality and the like.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a multistage barrier modularization's drinking water stage treatment system, includes by the preliminary treatment module, conventional processing module, advanced treatment module, high-quality water production module of pipeline and control valve intercommunication to and emergent wind accuse module, pass through the pipe connection between each module, preliminary treatment module, conventional processing module, advanced treatment module, high-quality water production module end all are equipped with independent delivery port, emergent wind accuse module with the control valve electricity is connected.
According to the scheme, the pretreatment module comprises a grating tank and a pre-ozone contact tank, wherein the grating tank comprises a grating machine, and the pre-ozone contact tank comprises an aeration device, a tail gas destructor and a baffle plate.
According to the scheme, the conventional treatment module comprises a flocculation sedimentation tank and a V-shaped filter tank, wherein a stirrer and a guide plate are arranged in the flocculation sedimentation tank, a sludge collecting pipe and a return sludge pipe are arranged at the bottom of the tank, and the V-shaped filter tank comprises a V-shaped groove and a steam-water separation pump.
According to the scheme, the advanced treatment module comprises an ozone contact tank and an activated carbon filter tank, the ozone contact tank comprises an aeration device, a packing layer and a tail gas destructor, and the activated carbon filter tank comprises an activated carbon filler, a pebble cushion layer and an aeration device.
According to the scheme, the high-quality water production module comprises a super filter tank and a reverse osmosis tank, wherein an ultrafiltration membrane assembly is arranged in the super filter tank, and the reverse osmosis tank comprises a reverse osmosis assembly.
According to the scheme, the emergency wind control module comprises an inlet water quality online detection device and an outlet water quality online detection device.
The working principle of each module of the invention is as follows:
(1) pre-processing module
The pretreatment module mainly comprises a grating tank and a pre-ozone contact tank, raw water is firstly lifted to a high water level by a water pump to enter the grating tank, then the raw water is filtered by a fine grating, and substances such as larger floaters, silt and the like in the water are removed by screening and then flow to the pre-ozone contact tank, an aeration device is arranged at the middle front part of the pre-ozone contact tank to carry out ozone aeration and a tail gas destructor so as to ensure that unreacted ozone cannot damage the environment, a baffle plate is arranged at the rear part of the ozone contact tank so as to increase the turbulence of water flow, so that the ozone of the pre-ozone can be fully mixed with the water, and pre-oxidation treatment of the ozone is carried out, namely the pretreatment module is formed. Ozone pretreatment can remove soluble iron and manganese, color, algae. In addition, the ozone oxidation can change the structure of organic matters in raw water, has a certain effect of removing DBPFP, and can reduce the generation of DBPs in the chlorination process;
(2) conventional processing module
The conventional treatment module mainly comprises a flocculation sedimentation tank and a V-shaped filter tank, the raw water flows to the flocculation sedimentation tank through a pipeline after passing through a fine grid and pre-flowing out water after an ozone contact tank, a quantitative PAC coagulant is added in the pipeline before the flocculation sedimentation tank through an automatic dosing device, a stirrer and a guide plate are arranged in the flocculation sedimentation tank, a sludge collecting pipe and a return sludge pipe are arranged at the bottom of the tank, flocculation and precipitation reaction are completed in the flocculation sedimentation tank, the effluent of the flocculation sedimentation tank flows to the V-shaped filter tank for filtration, a V-shaped tank and a steam-water separation pump are arranged in the V-shaped filter tank, the flocculation which is not precipitated in the flocculation sedimentation tank is mainly filtered, the effluent after filtration or the effluent flows to the next module, namely the conventional treatment module is formed. The conventional treatment process is a preferred scheme for realizing the safety guarantee of drinking water, and has better removal efficiency on conventional organic pollutants; the method has certain removal effect on heavy metal pollution, DBPsFP and MAP, and has high technical maturity; the method can also obtain good removal effect on the pollution of the amphibian with low algae density and low concentration;
(3) deep processing module
The advanced treatment module mainly comprises an ozone contact tank and an active carbon filter tank, water flows to the ozone contact tank through a pipeline from behind a fine grid or behind a V-shaped filter tank, a packing layer, an ozone aeration device and a tail gas destructor are arranged in the ozone contact tank, ozone oxidation reaction is mainly carried out in the ozone contact tank, organic matters which are difficult to degrade in water are oxidized into simple small molecular substances, the biodegradability of the organic matters which are difficult to degrade are improved, unreacted ozone is treated by the tail gas destructor to prevent damage to the environment, the water flows to the active carbon filter tank after reaction, active carbon fillers, a pebble cushion layer and an aeration head are arranged in the active carbon filter tank, various pollutants in the water are removed through the adsorption interception effect of the active carbon, the biological active carbon filter tank directly flows out water or flows to the next module, and the advanced treatment module is formed. The advanced treatment module can almost remove more than 90% of the existing pollutants, such as high-concentration Nitrobenzene (NB), algal toxin (MC), ammonia nitrogen, environmental hormones (EDCs), AOC, DBPsFP, amphisars, algae and other pollutants;
(4) high-quality water production module
The high-quality water production module mainly comprises an ultrafiltration tank and a reverse osmosis tank, effluent after conventional treatment or advanced treatment flows to the ultrafiltration tank through a pipeline, a membrane component of an ultrafiltration membrane material is arranged in the ultrafiltration tank, the ultrafiltration membrane is used for filtering or enters the reverse osmosis tank, and a selective permeation reverse osmosis membrane component is arranged in the reverse osmosis tank. The high-quality water production module can be applied to emergency treatment of sudden environmental problems and can also be used for preparing daily high-quality drinking water to improve customized differentiated water service for users;
(5) emergency wind control module
The system comprises an inlet water quality online detection device and an outlet water quality online detection device, wherein the inlet water quality online detection device and the outlet water quality online detection device are used for performing real-time online detection on the quality of inlet water and outlet water of each module, and the outlet water quality meets the national standard and is regarded as passing through a wind control module to be disinfected; if the quality of the effluent water does not meet the national standard, the effluent water is judged not to pass through the wind control module, and the effluent water needs to be subjected to advanced treatment for retreatment until the quality of the effluent water reaches the standard, so that the occurrence of sudden accidents is prevented.
Different process combinations are selected according to the eutrophication degree of source water and the water quality characteristics of raw water, particularly the types and content of algae, the concentration of algal toxins, the odor threshold value, the chromaticity, the permanganate index, the ammonia nitrogen and other indexes. When the raw water has low nutrition degree, the main pollutants are algae and the pollution is light, a conventional treatment process can be selected; when the contents of algae, algae metabolites, ammonia nitrogen and the like in the lake water are high and the quality of the effluent water in the conventional process cannot meet the drinking requirement, the pretreatment plus conventional treatment process or plus conventional treatment plus advanced treatment process can be adopted.
When the main pollutants in the source water are pathogenic organisms, which mainly represent the pollutants are Giardia lamblia and oocysts thereof, Cryptosporidium and cysts thereof, and cyclops and chironomid larvae, the two insects can be completely removed by adopting preoxidation, a conventional process and a deep treatment process. Of course, the pathogenic organism pollution can be completely removed by adopting the membrane technology. In order to prevent pathogenic organism contamination, especially water-mediated diseases caused by cryptosporidium, it is considered to select a membrane technology.
When the permanganate index of the source water is less than 5mg/L and the ammonia nitrogen concentration is less than 0.6mg/L, the effluent standard that the permanganate index is less than 3mg/L and the ammonia nitrogen concentration is less than 0.5mg/L can be achieved by adopting a conventional process.
When the permanganate index of source water is 5-8 mg/L and the ammonia nitrogen concentration is 0.65-1.2 mg/L, pretreatment and a conventional process can be selected, and the effluent quality can reach the standard that the permanganate index is less than 3mg/L and the ammonia nitrogen concentration is less than 0.5 mg/L.
When the permanganate index of source water is 8-10 mg/L and the ammonia nitrogen concentration is 1.2-1.6 mg/L, the conventional process and advanced treatment can be selected, and the effluent quality can meet the standard requirements that the permanganate index is less than 3mg/L and the ammonia nitrogen concentration is less than 0.5 mg/L.
When the permanganate index of source water is greater than 10mg/L and the ammonia nitrogen concentration is 1.6-2 mg/L, the pretreatment, the reinforced conventional process and the advanced treatment process can be selected. The factory water can reach the standard that the permanganate index is less than 3mg/L and the ammonia nitrogen concentration is less than 0.5 mg/L.
The invention has the beneficial effects that:
(1) the modules of the invention are independent from each other, and can run independently and achieve different processing effects through different combination modes;
(2) the whole set of multi-barrier grading treatment system has different treatment modes for different pollutants, and each barrier can not only exert the maximum treatment effect, but also strengthen the effect of the subsequent process;
(3) the invention has wide application range and stable operation, can adapt to different water quality requirements of inlet water, and can be applied to emergency treatment of sudden pollution;
(4) the treatment process is feasible, safe and reliable, and has the characteristics of simple operation and maintenance, convenient operation and management, economy, practicability and the like;
(5) the device disclosed by the invention is internally arranged in an intensive manner, all modules are designed to be relatively compact, and meanwhile, the basic water treatment requirement can be met without being completely built in the initial engineering construction stage, so that the engineering cost and the operation cost are reduced;
(6) the treatment process is a multistage barrier modularized graded drinking water treatment process, and has the advantages of good water quality, high efficiency and economy under the condition of lowest operation cost through reasonable configuration;
(7) compared with the conventional process, the process can also remove trace organic pollutants which are difficult to remove in the drinking water;
(8) the invention can further realize differentiated drinking water production after meeting the popular demands so as to meet the diversified consumption demands of users;
(9) the invention makes the drinking water treatment unit develop towards the value-added service direction of strengthening customization, refinement and convenience.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
FIG. 2 is a schematic diagram of the process of the present invention.
In the figure: 1. fine grids; 2. pre-ozone contact; 3. a flocculation sedimentation tank; 4. a V-shaped filter chamber; 5. an ozone contact tank; 6. an active carbon filter; 7. an ultrafiltration membrane module; 8. a reverse osmosis membrane module; 9. a risk control system; 201. a grid machine; 202. a jet pump house; 203. a tail gas destructor; 204. a water inlet pipe; 205. a water outlet pipe; 206. a mud collecting pipe; 207. a V-shaped groove; 208. a small hole; 209. a steam-water separation pump; 210. a blender; 211. a baffle; 212. a return sludge pipe; 213. a filler layer; 214. an activated carbon filler; 215. a pebble cushion layer; 216. an aeration device; 217. ultrafiltration membrane material; 218. a reverse osmosis membrane material; 219. an aeration device; 220. and (7) a baffle plate.
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and examples.
Example 1, see fig. 1 and 2:
the invention provides a multistage barrier modularized drinking water grading treatment system, which comprises a pretreatment module fine grid 1, a pre-ozone contact tank 2, a flocculation sedimentation tank 3 of a conventional treatment module, a V-shaped filter tank 4, an advanced treatment module ozone contact tank 5, an activated carbon filter tank 6, a high-quality water production module ultrafiltration membrane component 7, a reverse osmosis membrane component 8 and an emergency air control module which are communicated by a pipeline and a valve, wherein the tail end of each treatment module is provided with an independent water outlet, and the emergency air control module comprises an inlet water quality online detection device and an outlet water quality online detection device which are electrically connected with a control valve, and also comprises auxiliary facilities such as an inlet and outlet water pipe, an ozone generation device, an aeration pipeline, an aeration device, a suction pump and the like (see figure 1).
When the permanganate index of source water is more than 10mg/L and the ammonia nitrogen concentration is 1.6-2 mg/L, or when the source water is polluted by pathogenic organisms (especially water-mediated infectious diseases caused by cryptosporidium) and pollution of persistent novel organic pollutants, antibiotics, resistance genes and the like is prevented, the treatment system (mode three) of the embodiment is selected, and the mode three flow is as follows (see figure 2): raw water is firstly lifted to a high water level by a water pump and enters a grating tank, then the raw water is filtered and screened by a fine grating 201 to remove larger floating objects, silt and other substances in the water, and then flows to a pre-ozone contact tank 2, an aeration device 219 is arranged at the middle front part of the pre-ozone contact tank 2 for ozone aeration and a tail gas destructor 203 to ensure that unreacted ozone does not damage the environment, a baffle plate 220 is arranged at the rear part of the ozone contact tank 2 to increase the turbulence of water flow so as to ensure that the ozone of the pre-ozone can be fully mixed with the water, a stirrer 210 and a baffle plate 211 are arranged in a flocculation sedimentation tank 3, a sludge collecting pipe 206 and a return sludge pipe 212 are arranged at the bottom of the tank, flocculation and sedimentation are completed in the flocculation sedimentation tank 3, the effluent of the flocculation sedimentation tank 3 flows to a V-shaped filter tank 4 for filtration, a V-shaped groove 207 and a steam-water separation pump 209 are arranged in the, mainly aiming at filtering non-precipitated flocculate in a flocculation sedimentation tank 3, a packing layer 213, an ozone aeration device 219 and a tail gas destructor 203 are arranged in an ozone contact tank 5, ozone oxidation reaction is mainly carried out in the ozone contact tank 5 to oxidize organic matters which are difficult to degrade in water into simple small molecular matters, the biodegradability of the organic matters which are difficult to degrade is improved, the non-reacted ozone is treated by the tail gas destructor 203 to prevent damage to the environment, effluent water flows to an active carbon filter 6 after reaction, active carbon filler 214, a pebble cushion 215 and an aeration device 216 are arranged in the active carbon filter 6, various pollutants in water are removed through the adsorption interception effect of active carbon, a membrane component of an ultrafiltration membrane material 217 is arranged in the ultrafiltration tank 7, the ultrafiltration membrane is filtered or enters a reverse osmosis tank 8, a selective permeation component 218 is arranged in the reverse osmosis tank 8, the stage is more effective to virus and biological pollutants in water, the membrane is not easily polluted by fine particles, and water directly flows out after the ultrafiltration membrane material 217 or the reverse osmosis membrane component 218 is treated. Theoretically, the effluent quality can reach the national standard requirements that the permanganate index is less than 3mg/L and the ammonia nitrogen concentration is less than 0.5mg/L, meanwhile, pollutants which are difficult to remove by various conventional treatment processes, trace or trace novel organic pollutants in water can be completely degraded and removed, and finally, the effluent passes through the emergency wind control module. If the actual effluent quality of the reverse osmosis membrane module 8 meets the national standard, the effluent is considered to be disinfected through the emergency wind control module; if the quality of the effluent water does not meet the national standard, the effluent water is not judged to pass through the emergency wind control module, and the effluent water needs to flow through the advanced treatment module for retreatment until the quality of the effluent water reaches the standard.
Example 2, see fig. 1 and 2:
the invention provides a multistage barrier modularized drinking water grading treatment system, which comprises a pretreatment module fine grid 1, a pre-ozone contact tank 2, a conventional treatment module flocculation sedimentation tank 3, a V-shaped filter tank 4, a deep treatment module ozone contact tank 5, an activated carbon filter tank 6 and an emergency air control module which are communicated by a pipeline and a valve, wherein the tail end of each treatment module is provided with an independent water outlet, the emergency air control module comprises an inlet water quality online detection device and an outlet water quality online detection device, is electrically connected with a control valve, and also comprises auxiliary facilities such as an inlet and outlet water pipe, an ozone generation device, an aeration pipeline, an aeration device, a suction pump and the like (see figure 1).
When the permanganate index of the source water is 8-10 mg/L and the ammonia nitrogen concentration is 1.2-1.6 mg/L, or when the contents of algae, algae metabolites, ammonia nitrogen and the like in the lake water are high and the quality of the factory water in the conventional process cannot meet the drinking requirement, or when the main pollutants in the source water are pathogenic organisms, mainly representing the pollutants of Giardia lamblia and oocysts thereof, Cryptosporidium and cysts thereof, and Ctenocephalides chinensis and Chironomus larvae, the treatment system (mode two) of the embodiment can be selected, and the flow of the mode two is as follows (see fig. 2): raw water is firstly lifted to a high water level by a water pump and enters a grating tank, then the raw water is filtered and screened by a fine grating 201 to remove larger floating objects, silt and other substances in the water, and then flows to a pre-ozone contact tank 2, an aeration device 219 is arranged at the middle front part of the pre-ozone contact tank 2 for ozone aeration and a tail gas destructor 203 to ensure that unreacted ozone does not damage the environment, a baffle plate 220 is arranged at the rear part of the ozone contact tank 2 to increase the turbulence of water flow so as to ensure that the ozone of the pre-ozone can be fully mixed with the water, a stirrer 210 and a baffle plate 211 are arranged in a flocculation sedimentation tank 3, a sludge collecting pipe 206 and a return sludge pipe 212 are arranged at the bottom of the tank, flocculation and sedimentation are completed in the flocculation sedimentation tank 3, the effluent of the flocculation sedimentation tank 3 flows to a V-shaped filter tank 4 for filtration, a V-shaped groove 207 and a steam-water separation pump 209 are arranged in the, mainly filter to the flocculate that does not deposit in the flocculation and precipitation pond 3, be provided with packing layer 213 in the ozone contact tank 5, ozone aeration equipment 219 and tail gas destroyer 203, mainly carry out ozone oxidation reaction in ozone contact tank 5, the organic matter oxidation who is difficult to degrade in the aquatic is simple micromolecule matter, improve the biodegradability of difficult degradation organic matter, and unreacted ozone is handled by tail gas destroyer 203 in order to prevent to cause the destruction to the environment, the play rivers are to activated carbon filter 6 after the reaction, be provided with activated carbon filler 214 in activated carbon filter 6, cobble bed course 215 and aeration equipment 216, through the adsorption interception effect of activated carbon, get rid of all kinds of pollutants in the aquatic. Theoretically, the effluent quality can reach the national standard requirements of permanganate being less than 3mg/L and ammonia nitrogen concentration being less than 0.5mg/L, most of various novel organic matters which are difficult to remove and are trace or trace can be degraded and removed, and finally the novel organic matters pass through the emergency wind control module. If the actual effluent quality of the activated carbon filter 6 meets the national standard, the effluent is treated as passing through the emergency wind control module for disinfection; if the quality of the effluent water does not meet the national standard, the effluent water is not judged to pass through the emergency wind control module, the effluent water needs to flow back to the advanced treatment module for treatment, the treated effluent water flows through the emergency wind control module again, if the effluent water passes through the emergency wind control module, the effluent water is disinfected, and if the effluent water does not pass through the emergency wind control module, the operation working condition of each module unit is checked or the three-mode treatment is adopted.
Example 3, see fig. 1 and 2:
the invention provides a multistage barrier modularized drinking water grading treatment system, which comprises a pretreatment module fine grid 1, a pre-ozone contact tank 2, a conventional treatment module flocculation sedimentation tank 3, a V-shaped filter tank 4 and an emergency air control module which are communicated by a pipeline and a valve, wherein the tail end of each treatment module is provided with an independent water outlet, the emergency air control module comprises an inlet water quality online detection device and an outlet water quality online detection device, and is electrically connected with the control valve, and the system also comprises auxiliary facilities such as an inlet and outlet water pipe, an ozone generation device, an aeration pipeline, an aeration device, a suction pump and the like (see figure 1).
When the permanganate index of the source water is 5-8 mg/L, the ammonia nitrogen concentration is 0.65-1.2 mg/L, or the raw water has low nutrition level, and the main pollutants are algae and are light, the treatment system of the embodiment (mode one) can be selected, and the mode one process is as follows (see fig. 2): raw water is firstly lifted to a high water level by a water pump and enters a grating tank, then the raw water is filtered and screened by a fine grating 201 to remove larger floating objects, silt and other substances in the water, and then flows to a pre-ozone contact tank 2, an aeration device 219 is arranged at the middle front part of the pre-ozone contact tank 2 for ozone aeration and a tail gas destructor 203 to ensure that unreacted ozone does not damage the environment, a baffle plate 220 is arranged at the rear part of the ozone contact tank 2 to increase the turbulence of water flow so as to ensure that the ozone of the pre-ozone can be fully mixed with the water, a stirrer 210 and a baffle plate 211 are arranged in a flocculation sedimentation tank 3, a sludge collecting pipe 206 and a return sludge pipe 212 are arranged at the bottom of the tank, flocculation and sedimentation are completed in the flocculation sedimentation tank 3, the effluent of the flocculation sedimentation tank 3 flows to a V-shaped filter tank 4 for filtration, a V-shaped groove 207 and a steam-water separation pump 209 are arranged in the, mainly aims at filtering the non-precipitated flocculate in the flocculation sedimentation tank 3. Theoretically, the effluent quality can reach the national standard requirements that the permanganate index is less than 3mg/L and the ammonia nitrogen concentration is less than 0.5mg/L, and finally passes through the emergency wind control module. If the actual effluent quality of the V-shaped filter tank 4 meets the national standard, the effluent is considered to pass through the emergency wind control module for disinfection; if the quality of the effluent water does not meet the national standard, the effluent water is not judged to pass through the emergency wind control module, the effluent water needs to flow back to the conventional treatment module for retreatment, the treated effluent water flows through the emergency wind control module again, if the effluent water passes through the emergency wind control module, the effluent water is disinfected, and if the effluent water does not pass through the emergency wind control module, the operation working condition of each module unit needs to be checked or the mode two treatment is adopted.
When source water quality of water is better, pollutant types are less, and concentration is lower, multi-mode parallel operation can be adopted, after water is treated out through mode one or mode two, most water treatment can be directly carried out up to standard, another little water can get into high-quality water production module, realize high-quality direct drinking water production, namely under the condition that most users' demands are satisfied, produce some high-quality direct drinking water, barreled water and bottled water, realize economic gain for external sales.
The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the above embodiments describe the present invention in detail, those skilled in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and any modifications and equivalents may fall within the scope of the claims.
Claims (6)
1. The utility model provides a multistage barrier modularization's drinking water stage treatment system, its characterized in that includes by the preliminary treatment module, conventional processing module, the advanced treatment module of pipeline and control valve intercommunication, high-quality aquatic production module to and emergent wind accuse module, pass through the pipe connection between each module, preliminary treatment module, conventional processing module, advanced treatment module, high-quality aquatic production module are terminal all to be equipped with independent delivery port, emergent wind accuse module with the control valve electricity is connected.
2. The multi-stage barrier modular potable water staging system according to claim 1, wherein the pretreatment module comprises a grid basin including a grid machine therein, a pre-ozone contact basin including an aeration device, an off-gas destructor, and baffles.
3. The multi-barrier modular graded drinking water treatment system according to claim 1, wherein the conventional treatment module comprises a flocculation sedimentation tank and a V-shaped filter tank, a stirrer and a guide plate are arranged in the flocculation sedimentation tank, a sludge collecting pipe and a return sludge pipe are arranged at the bottom of the flocculation sedimentation tank, and the V-shaped filter tank comprises a V-shaped groove and a steam-water separation pump.
4. The multi-stage barrier modular drinking water staging system according to claim 1, wherein the advanced treatment module includes an ozone contact tank including an aerator, a packing layer, and an exhaust gas destructor, and an activated carbon filter including an activated carbon packing, a pebble bed and an aerator.
5. The multi-stage barrier modular potable water staging system according to claim 1, wherein the high-quality water production module comprises a super filter in which an ultrafiltration membrane module is disposed and a reverse osmosis tank including a reverse osmosis module.
6. The multi-stage barrier modular drinking water staged processing system according to claim 1, wherein the emergency wind control module comprises an inlet water quality on-line detection device and an outlet water quality on-line detection device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115893748A (en) * | 2022-12-14 | 2023-04-04 | 佛山市禅城区供水有限公司 | Intelligent self-adaptation running water production system |
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| CN202543007U (en) * | 2012-04-26 | 2012-11-21 | 复旦大学 | Process system for controlling risk of drinking water disinfection by-products and pathogenic microorganisms |
| CN202671347U (en) * | 2012-05-14 | 2013-01-16 | 上海市政工程设计研究总院（集团）有限公司 | Combination processing unit for micro-polluted raw water |
| CN103420519A (en) * | 2012-05-14 | 2013-12-04 | 上海市政工程设计研究总院（集团）有限公司 | Combined processing technology for slightly polluted raw water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202543007U (en) * | 2012-04-26 | 2012-11-21 | 复旦大学 | Process system for controlling risk of drinking water disinfection by-products and pathogenic microorganisms |
| CN202671347U (en) * | 2012-05-14 | 2013-01-16 | 上海市政工程设计研究总院（集团）有限公司 | Combination processing unit for micro-polluted raw water |
| CN103420519A (en) * | 2012-05-14 | 2013-12-04 | 上海市政工程设计研究总院（集团）有限公司 | Combined processing technology for slightly polluted raw water |
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