CN108164038A - A kind of Water feeding treatment device and processing method - Google Patents

Abstract

The present invention discloses a kind of Water feeding treatment device, and wherein preprocessing module is connect with sand filter, and sand filter is connect with advanced treating module, and advanced treating module is connect with clear water reserviors；Preprocessing module, sand filter and advanced treating module are connect with Treatment of Sludge module, and Treatment of Sludge module is connected by pipeline or channel and the entrance of preprocessing module；The preprocessing module, sand filter, advanced treating module and Treatment of Sludge module adjoin setting, and the preprocessing module, sand filter and advanced treating module are located at the Treatment of Sludge module top, and the preprocessing module, sand filter and advanced treating module are connect with Treatment of Sludge module by channel.Invention additionally discloses a kind of feedwater treatment methods.The present invention can ensure that effluent quality reaches qualitative leap, and production waste water is effectively addressed, and environmental pressure is mitigated, and floor space is saved, and economic benefit is apparent.

Description

A kind of water treatment device and treatment method

technical field

The invention relates to the technical field of water treatment, in particular to a feedwater treatment device and a treatment method.

Background technique

Raw water with low turbidity and high algae all year round, and occasionally high turbidity is a difficult problem in the field of water treatment at home and abroad. In the existing technology, the treatment process of the water supply plant is generally "flocculation + sedimentation + filtration". It has been used for decades, and the effect of treating raw water with stable water quality is still good, but it cannot treat the raw water of the above special water quality. There are many problems in the treatment process. insurmountable problem.

In seasons with less rain, the turbidity of raw water is often low, and the effect of conventional flocculation and sedimentation is poor. The precipitated water contains a large number of fine suspended particles. After this water enters the sand filter, the fine suspended particles in it are easy to penetrate the filter layer. Resulting in higher turbidity of factory water. In the rainy season, after the heavy rain, the turbidity of the raw water suddenly increases, and the impact resistance of the conventional treatment process is average, and the problem of untimely adjustment often occurs, resulting in high turbidity of the filtered water.

The density of algae in the raw water is low. After flocculation, the flocs formed are small and low in density, resulting in poor removal effect of the sedimentation process; the algae that cannot be removed enter the sand filter, and the larger algae are intercepted by the filter. In the filter layer, it is easy to cause the blockage of the filter tank, reduce the water production of the filter tank, and increase the water consumption of backwashing; while the smaller algae can easily penetrate the filter layer, increasing the difficulty of subsequent process treatment; the algae are easy to attach to the water supply network, constantly After reproduction, the water quality deteriorates; in addition, the addition of chlorine to remove algae will produce disinfection by-products, which increase the risk of human cancer and reduce the safety of drinking water.

After the algae multiply in the raw water, many volatile and non-volatile organic substances will be produced. These organic substances or their decomposition products will cause abnormal smell and odor of the water. The odor and smell substances are difficult to remove by conventional processes, resulting in the sensory perception of urban water supply water quality. The traits are bad, and the safety of drinking water is reduced.

The production wastewater treatment process of the water supply plant is routinely carried out in accordance with the process of the sewage plant. Generally, radial flow sedimentation tanks are used, and there are errors in the design concept. Because the discharge of wastewater produced by the water supply plant is discontinuous and intermittent, and the sludge concentration of the water supply plant is lower than that of the sewage plant, and the sludge composition of the water supply plant is different from that of the sewage plant, the continuous operation of the radial flow sedimentation tank requires continuous operation. , The required sludge concentration and composition are also different, so not only is the operation prone to problems, but it also occupies a huge area, resulting in a great waste of investment.

Contents of the invention

The purpose of the present invention is to solve the above problems and provide a water supply treatment device, which can ensure that the water quality of the effluent is better than the water quality standard of my country, reaches the water quality standard of the European Union, and the water quality of the effluent reaches a qualitative leap, and the production wastewater can be effectively treated, and the environmental burden can be reduced. lighten.

The present invention also provides a feedwater treatment method based on the above feedwater treatment device.

The technical solution adopted by the present invention to solve the technical problem is: a water supply treatment device, including a pretreatment module, a sludge treatment module, a sand filter tank, an advanced treatment module and a clear water tank, the pretreatment module and the sand filter pool, the sand filter is connected with the advanced treatment module, and the advanced treatment module is connected with the clear water tank; the pretreatment module, sand filter and advanced treatment module are connected with the sludge treatment module, and the The sludge treatment module is connected to the inlet of the pretreatment module through a pipeline; the pretreatment module, the sand filter, and the advanced treatment module are adjacent to the sludge treatment module, and the pretreatment module, the sand filter, and the advanced treatment The module is located on the upper part of the sludge treatment module, and the pretreatment module, sand filter and advanced treatment module are connected with the sludge treatment module through channels.

The pretreatment module includes a pre-ozone contact tank, a mixing tank, a flocculation reaction tank and an air flotation sedimentation tank, and the pre-ozone contact tank is adjacent to the mixing tank, and is communicated at the bottom of the tank through a communication port; the mixing tank is connected to the The flocculation reaction tanks are adjacent to each other and communicated at the top of the tanks through communication channels, and the flocculation reaction tanks are adjacent to the air flotation sedimentation tanks and communicated at the bottom of the tanks through perforated flower walls.

Among the pre-ozone contact tank, mixing tank, flocculation reaction tank and air flotation sedimentation tank, the head loss between each tank is only 0.1-0.4m, and the head loss is 30%-50% less than the traditional process of connecting the tanks through pipelines. %, saving 8% to 12% of the energy consumption of the raw water lift pump.

The pre-ozone contact pool is provided with a pre-ozone dosing device and an exhaust gas destruction device to collect and destroy the ozone that is not dissolved into the water and emitted into the air into oxygen, so as to reduce the harm of ozone to the environment.

Said mixing tanks include but not limited to hydraulic mixing tanks and mechanical mixing tanks.

The flocculation reaction tank includes, but is not limited to, a partition flocculation tank, a folded plate flocculation tank, a grid (bar) flocculation tank or a mechanical flocculation tank.

The air flotation sedimentation tank includes a tank body, a perforated flower wall, a dissolved air water release device, an inclined plate device, an air flotation water collection pipe, a slag discharge tank, a slag scraper, a mud scraper, a mud pit, a mud discharge valve, and a sedimentation outlet weir 1. Sedimentation outlet channel and air flotation outlet channel; there are two perforated flower walls in total, one of which is located on the side wall at the bottom of the water inlet end of the pool body, the height is 1/6 of the pool body height, and the width is consistent with the pool body width; The other one is set at the tail side wall of the inclined plate device at the water outlet end of the pool body, the height is 1/2 of the height of the pool body, and the width is consistent with the width of the pool body; the dissolved air water release device is set at the bottom of the water inlet end of the pool body to perforate Next to the flower wall; the inclined plate device is arranged under the water surface in the pool, the length is 2/3 of the length of the pool body, the width is consistent (same) with the width of the pool body, and the height is 1/2 of the height of the pool body; the air flotation set The water pipe is arranged close to the bottom of the sloping plate device, and is connected with the air flotation outlet channel, and its length is consistent (same) with the length of the sloping plate device. The slag discharge tank is set at the tail of the pool body, and the notch is located on the water surface; the slag scraper is set on the track on the top of the pool body, and can reciprocate between the two ends of the pool body. The bottom of the slag scraper is set The scraper is in contact with the water surface, and the scum on the water surface can be scraped to the slag discharge tank during the movement; the mud scraper is installed close to the bottom of the pool body, located at the lower part of the air flotation water collection pipe, and can be placed between the two ends of the pool bottom Reciprocating movement, the bottom of the mud scraper is provided with a scraper in contact with the bottom surface of the pool, and the sludge at the bottom of the pool can be scraped to the vicinity of the mud pit during the movement; the mud discharge valve is set at the bottom of the mud pit for Drain the mud at the bottom of the pond; the sediment outlet weir is located at the end of the pool body and is connected with the perforated flower wall at the end of the pool body; the air flotation outlet channel is adjacent to the sediment outlet weir, and the air flotation water collection pipe enters the air Floating out of the water channel, the effluent from the air flotation out of the water channel enters the sand filter for treatment. The sedimentation outlet weir collects clear water, the effluent from the sedimentation effluent enters the sedimentation effluent, and the effluent from the sedimentation effluent enters the sand filter for treatment.

The advanced treatment module includes a main ozone contact tank, a bioactive carbon filter and a disinfection contact tank, and the main ozone contact tank, a biological activated carbon filter, and a disinfection contact tank are adjacent to each other in sequence and connected by a communication channel, and the water head between each tank The loss is only 0.1-0.4m, and the water head loss is 30%-50% less than the traditional process where the pools are connected by pipelines, and the energy consumption of the raw water lift pump is saved by 8%-12%.

A main ozone dosing device is installed on the main ozone contact tank; a backwash drain is set between the main ozone contact tank and the biological activated carbon filter.

The main ozone dosing device and tail gas destroying device are installed on the main ozone contact pool to collect and destroy the ozone that is not dissolved into the water and emitted into the air into oxygen, so as to reduce the harm of ozone to the environment.

The sludge treatment module includes a backwash wastewater sedimentation tank, a slag discharge and sludge discharge sedimentation tank, a scum degasser, a sludge concentration tank and a sludge storage tank; , the scum degassing tank, the sludge thickening tank and the sludge storage tank are set adjacent to each other in sequence and located under the air flotation sedimentation tank.

A perforated mud discharge pipe is arranged at the bottom of the flocculation reaction tank to be connected to a mud discharge channel, and the mud discharge channel is respectively connected to the backwash wastewater sedimentation tank, the slag discharge mud discharge sedimentation tank, and the scum degassing tank.

A decanter is set in the backwash wastewater sedimentation tank, slag discharge sedimentation tank, scum degassing tank, and sludge thickening tank, and the supernatant is passed through the decanter, supernatant liquid pipe, and water pump. Return to the raw water pipe for treatment.

The scum degassing tank, the sludge thickening tank and the sludge storage tank are all equipped with agitators.

The sand filter includes, but is not limited to, a Trumpf filter, a double-valve filter, a single-valve filter, a valveless filter, a V-shaped filter, a flap filter, a multi-layer filter or a siphon filter.

A feed water treatment method, based on the feed water treatment device, comprises the following steps: raw water flows through a pre-ozone contact tank, a mixing tank, a flocculation reaction tank, an air flotation sedimentation tank, a sand filter tank, a main ozone contact tank, Biological activated carbon filter, disinfection contact pool and clean water pool;

(1) When the raw water turbidity is low at 0-70NTU, or the algae content is greater than or equal to 60 million/L, the air flotation sedimentation tank operates the air flotation process: the effluent from the flocculation reaction tank enters the air flotation Sedimentation tank, and then mixed with the dissolved air water released by the dissolved air water release device, the flocs adhere to the tiny air bubbles released by the dissolved air water and float to the liquid surface to form scum, and the clear water separated from the flocs passes through the air flotation water collection pipe After collection, it enters the air flotation outlet channel, and the effluent from the air flotation outlet channel enters the sand filter for treatment.

(2) When the turbidity of the raw water is higher than 70NTU, the air flotation sedimentation tank is switched to operate the sedimentation process: the water after the flocculation reaction in the flocculation reaction tank enters the air flotation sedimentation tank, and then flows through the inclined plate device, and the flocs are on the inclined plate Under the blocking of the device, it slides to the bottom of the pool to form mud deposits. The mud deposits are scraped by the mud scraper at the bottom of the pool to the mud pit at the end of the pool. The mud discharge valve at the bottom of the mud pit opens to discharge the mud to the slag discharge and sedimentation The clear water separated from the flocs flows through the inclined plate device, flows through the perforated flower wall at the end of the pool, enters the sedimentation outlet weir, and then enters the sedimentation outlet weir through the sedimentation outlet weir, and the effluent from the sedimentation outlet enters the sand filter for treatment .

During the process of production wastewater treatment, the scum in the air flotation sedimentation tank is scraped into the slag discharge tank at the end of the tank by the slag scraper, and then flows into the scum degassing tank. When the scum degassing tank is full, the tank is stirred The degassing device breaks up the scum and degasses it. The degassed scum is sucked by the sludge pump to the scum discharge sedimentation tank. After the scum suction is completed, the scum degassing tank can accept the scum again; After the slag discharge sedimentation tank is full, it starts to settle still. When the sedimentation is completed, the supernatant is sucked back to the raw water pipe through the decanter, the supernatant pipe and the water pump. The sludge pump pumps the sludge to the sludge thickening tank for thickening. After the sludge suction is completed, the scum discharge sedimentation tank can receive scum again.

During the process of production wastewater treatment, the sludge in the flocculation reaction tank is collected through the perforated sludge discharge pipe and then flows into the sludge discharge channel, then flows through the sludge pipe and then enters the slagging and sludge discharge sedimentation tank. When the slag discharge and sludge discharge sedimentation tank is full, Start static sedimentation. When the sedimentation is completed, the supernatant is pumped through the decanter and the water pump and returned to the raw water pipe. After the suction of the supernatant is completed, the sludge is sucked to the sludge thickening tank by the sludge pump for concentration , After the sludge suction is completed, the sedimentation tank for slag discharge and sludge discharge can accept sludge again.

During the process of production wastewater treatment, the sand filter or biological activated carbon filter is backwashed and drained, and flows into the backwash wastewater sedimentation tank through pipes or channels. When the backwash wastewater sedimentation tank is full, it begins to settle still. The water tank, supernatant pipe and water pump suck the supernatant back to the raw water pipe. After the supernatant is sucked, the sludge is sucked to the sludge thickening tank by the sludge pump for concentration, and the sludge suction is completed. Afterwards, the backwash wastewater sedimentation tank can be used for backwash drainage.

During the process of production wastewater treatment, when the sludge concentration tank is full, the sedimentation concentration starts. After the concentration is completed, the supernatant is discharged to the municipal pipe network through a decanter. After the supernatant is discharged, it is passed through a sludge pump. The sludge is sucked to the sludge storage tank, and the agitator works at the same time. After the sludge thickening tank is emptied, the discharged sludge can be accepted again. The sludge in the sludge storage tank is dehydrated and then transported outside.

Compared with the prior art, the beneficial effects of the present invention: (1) air flotation sedimentation tank, can switch air flotation process or sedimentation process at any time in the same pool, not only the air flotation process can solve the period of poor raw water quality (turbidity low, high algae content, high pH value, and sometimes high chroma) the problem of poor treatment effect of conventional processes, and the sedimentation process can make up for the problem that the air flotation process cannot handle the sudden high turbidity of raw water well; (2) Secondary ozone oxidation is adopted, that is, pre-ozone and main ozone, supplemented by biological activated carbon treatment, to solve the problem of treatment of raw water odor substances (geosmin, methyl isoborneol-2, etc.); pre-ozone replaces the conventional process Pre-chlorination, together with the effect of the main ozone, will reduce the dosage of chlorine, thereby reducing the odor substances produced by chlorine addition, and further ensuring the complete removal of odor substances; (3) using a disinfection contact pool, through chlorine disinfection, Avoid the problem of biological leakage of biological activated carbon pool effluent; (4) Adopt sequence batch process to treat production wastewater to solve the problem of sludge treatment in water supply plants; , all of which are processed by the sequential batch method of static sedimentation and intermittent operation; (5) the pretreatment module, the sludge treatment module, and the advanced treatment module, the internal process pools are all adjacent to each other, saving the floor space, which is better than using tiled The traditional technology in the form of traditional technology saves 30-50% of the floor area; (6) the pretreatment module, the sludge treatment module, and the advanced treatment module, the internal process pools are adjacent to each other and connected by channels, and the water head loss is small. The water head loss is only 0.1-0.4m, the head loss is 30% to 50% less than the traditional process of connecting the pools through pipelines, and the energy consumption of the raw water lift pump is saved by 8% to 12%; (7) Air flotation process and sedimentation The process can be switched freely, and the pretreatment process and advanced treatment are combined. Therefore, the present invention has wider water quality adaptability and higher impact load resistance than the traditional process.

In general, the technical process and structural form of the present invention are reasonable, which can ensure that the effluent water quality is superior to my country's water quality standards, reaching EU water quality standards, and the effluent water quality has reached a qualitative leap, and the production wastewater can be effectively treated, reducing environmental burdens and occupying an area of Savings, obvious economic benefits.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is a process flow diagram of a kind of water treatment method of the present invention;

Fig. 2 is a side sectional view of a pretreatment module and a sludge treatment module in a water supply treatment device of the present invention;

Fig. 3 is a side sectional view of an advanced treatment module in a feedwater treatment device according to the present invention.

Among them, 1 is the pre-ozone contact tank, 2 is the pre-ozone dosing device, 3 is the mechanical mixing tank, 4 is the agitator, 5 is the Unicom channel, 6 is the grid flocculation reaction tank, 8 is the dissolved air water release device, 9 10 is the air flotation sedimentation tank, 11 is the air flotation water collection pipe, 12 is the slag discharge tank, 13 is the air flotation outlet channel, 15 is the mud discharge channel, 17 is the perforated mud discharge pipe, 19 is the decanter , 20 is the backwash wastewater sedimentation tank, 21 is the slag discharge sludge sedimentation tank, 22 is the scum degassing tank, 23 is the sludge concentration tank, 24 is the sludge storage tank, 25 is the main ozone contact tank, and 26 is the main Ozone dosing device, 27 is the communication channel, 28 is the backwash wastewater channel, 29 is the biological activated carbon filter, 30 is the disinfection contact tank, 31 is the tail gas destruction device, 32 is the sludge pump, 33 is the submersible mixer, 34 is Supernatant liquid pipe, 35 is water pump, 36 is connecting pipe, 37 is mud scraper, 38 is inclined plate device, 39 is perforated flower wall, 40 is sedimentation outlet weir, 41 is sedimentation outlet channel, 42 is mud discharge valve, 43 It is a mud pit, 44 is a Unicom port, 45 is a sludge pipe, and 46 is a raw water pipe.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Accompanying drawing has shown the concrete structure of preferred embodiment of the present invention. The structural characteristics of each component, if there is a description of the direction (up, down, left, right, front and back), it is described with reference to the structure shown in Figure 2 and Figure 3, where the arrows are water flow or sludge The discharge direction, but the actual use direction of the present invention is not limited to this.

A water supply treatment device, as shown in Figure 1, it includes a pretreatment module, a sludge treatment module, a sand filter, an advanced treatment module and a clear water tank, and the pretreatment module is connected with the sand filter through a pipeline or a channel , the effluent of the pretreatment module is introduced into the sand filter for filtering treatment; the sand filter is connected with the advanced treatment module through pipelines or channels, and the effluent of the sand filter is introduced into the advanced treatment module for treatment; the advanced treatment The module is connected to the clear water pool through pipes or channels, and the water output from the advanced treatment module is introduced into the clear water pool for disinfection treatment, and then the water is discharged. The pretreatment module, sand filter and advanced treatment module are respectively connected to the sludge treatment module through pipes or channels, and the sludge or slag discharge of the pretreatment module, the backwash drainage of the sand filter or the advanced treatment module are introduced into the sludge The treatment module performs treatment; the sludge treatment module is connected to the inlet of the pretreatment module through pipes or channels, and the supernatant is returned to the pretreatment module for retreatment. The sludge treatment module discharges sludge through pipelines or channels, and the discharged sludge is disposed of after dehydration treatment.

The pretreatment module, the sand filter, the advanced treatment module, the clear water tank and the sludge treatment module are arranged adjacent to each other, and the pretreatment module, the sand filter and the advanced treatment module are located on the upper part of the sludge treatment module, and the sludge treatment module In the lower part of the above modules, a vertical stacking tank is formed, and the pretreatment module, sand filter and advanced treatment module are directly connected with the sludge treatment module through channels, which is conducive to sludge discharge and saves the installation and use of pipelines and pumps , energy saving and low construction cost; the head loss between the pools is only 0.1-0.4m, the head loss is 30% to 50% less than the traditional process of connecting the pools through pipelines, and the energy consumption of the raw water lift pump is saved by 8% to 12%. .

As shown in Figure 2, wherein, the pretreatment module includes a pre-ozone contact tank 1, a mechanical mixing tank 3, a flocculation reaction tank 6 and an air flotation sedimentation tank 10; the pre-ozone contact tank 1 is adjacent to the mechanical mixing tank 3, The two are connected by the communication port 44; the mechanical mixing tank 3 is adjacent to the grid flocculation reaction tank 6, and the two are connected by the communication channel 5; the grid flocculation reaction tank 6 is connected to the air flotation sedimentation tank 10 Adjacent, the two are connected by the perforated flower wall 39 of the side wall at the bottom of the pool. Between the pre-ozone contact tank 1, the mechanical mixing tank 3, the grid flocculation reaction tank 6 and the air flotation sedimentation tank 10, the head loss between each tank is only 0.1-0.4m, and the head loss is lower than that of the tanks connected by pipelines. The traditional process saves 30% to 50%, and saves the energy consumption of the raw water lift pump by 8% to 12%.

As shown in Figure 2, the pre-ozone dosing device 2 and the tail gas destruction device are set on the pre-ozone contact tank 1, and the ozone that is not dissolved in water and emitted into the air is collected and destroyed into oxygen, so as to reduce the harm of ozone to the environment . The pre-ozone dosing device 2 can be a porous row pipe, so that ozone can be released evenly. A number of partition walls are set in the pre-ozone contact tank 1 to guide the flow of water and produce a self-stirring effect, which can fully mix the ozone with the raw water. A stirrer 4 is installed on the mechanical mixing tank 3, and the water added with flocculant and coagulant aid is stirred by the stirrer 4, and the stirring speed is 80-250 rpm. Several partition walls are set in the grid flocculation reaction tank 6 to guide the flow of water and produce self-stirring effect, which can fully mix the flocculant and coagulant aid with the raw water to improve the flocculation effect.

As shown in Figure 2, the air flotation sedimentation tank 10 includes a tank body, a perforated flower wall 39, a dissolved air water release device 8, an inclined plate device 38, an air flotation water collection pipe 11, a slag discharge tank 12, a slag scraper 9, a scraper Mud machine 37, mud pit 43, mud discharge valve 42, sedimentation outlet weir 40, sedimentation outlet channel 41, air flotation outlet channel 13. There are two perforated flower walls 39 in total, one of which is located on the side wall at the bottom of the water inlet end of the pool body, the height is 1/6 of the height of the pool body, and the width is consistent with the width of the pool body; The tail side wall of the inclined plate device 38 has a height of 1/2 of the height of the pool body and a width consistent with the width of the pool body; the dissolved air water release device 8 is arranged beside the perforated flower wall 39 at the bottom of the water inlet end of the pool body; The plate device 38 is arranged under the water surface in the pool, the length is 2/3 of the length of the pool body, the width is consistent (same) with the width of the pool body, and the height is 1/2 of the height of the pool body; The bottom of the plate device 38 is arranged and connected with the air flotation outlet channel 13, and its length is consistent (same) with the length of the inclined plate device 38 . The slag discharge tank 12 is arranged at the tail of the pool body, and the notch is located on the water surface; the slag scraper 9 is arranged on the track at the top of the pool body and can reciprocate between the two ends of the pool body. The slag scraper 9 The bottom of the scraper is in contact with the water surface, and the scum on the water surface can be scraped to the slag discharge tank 12 during the movement. The mud scraper 37 is installed close to the bottom of the pool body, located at the lower part of the air flotation water collection pipe 11, and can reciprocate between the two ends of the pool bottom. The bottom of the mud scraper 37 is provided with a scraper and the bottom surface Contact, during the movement, the sludge at the bottom of the pool can be scraped to the vicinity of the mud pit 43; the mud discharge valve 42 is arranged at the bottom of the mud pit 43 to discharge the mud at the bottom of the pond; the sedimentation outlet weir 40 is arranged at the end of the pond body , connected with the perforated flower wall 39 at the tail end of the pool body; the air flotation outlet channel 13 is adjacent to the sediment outlet weir 40, and the air flotation water collection pipe 11 enters the air flotation outlet channel 13 after being collected, and the outlet water of the air flotation outlet channel 13 is again Enter the sand filter for treatment; the sedimentation outlet weir 40 collects clear water, the outlet water of the sedimentation outlet weir 40 enters the sedimentation outlet channel 41, and the outlet water of the sedimentation outlet channel 41 enters the sand filter for treatment.

As shown in Figure 3, described advanced treatment module comprises main ozone contact tank 25, bioactive carbon filter tank 29 and disinfection contact tank 30; Described main ozone contact tank 25, biological activated carbon filter tank 29 and disinfection contact tank 30 are serially connected successively, The adjacent pools are connected by channels, and the head loss between the pools is only 0.1-0.4m. The water head loss is 30%-50% less than that of the traditional process in which the pools are connected by pipelines, and the energy consumption of the raw water lifting pump is saved by 8%-12%. A main ozone dosing device 26 is installed on the main ozone contact tank 25 . A backwash waste water channel 28 is set between the main ozone contact tank 25 and the biological activated carbon filter tank 29 . The bioactive carbon filter 29 is composed of several pool bodies arranged side by side.

As shown in Figure 2, the sludge treatment module includes a backwash waste water settling tank 20, a slag discharge sludge settling tank 21, a scum degassing tank 22, a sludge thickening tank 23 and a sludge storage tank 24; Washing waste water settling tank 20, slagging and sludge discharging settling tank 21, scum degassing tank 22, sludge thickening tank 23 and sludge storage tank 24 are arranged adjacent to each other in sequence, and are located below the air flotation settling tank 10; the flocculation reaction tank 6 The bottom is provided with a perforated sludge discharge pipe 17 connected to the sludge discharge channel 15, and the sludge discharge channel 15 is connected to the sludge discharge sedimentation tank 21 through the sludge pipe 45; A decanter 19 is installed in the sedimentation tank 21, the scum degassing tank 22, and the sludge thickening tank 23, and the supernatant is pumped back to the raw water pipe 46 through the decanter 19, the supernatant liquid pipe 34 and the water pump 35; A sludge pump 32 is set in the sludge pit 20 of the backwash wastewater settling tank 20, the slagging and sludge discharging settling tank 21, the scum degassing tank 22, and the sludge thickening tank 23, and the sludge pump 20 passes through the sludge The pipe 45 transports the sludge to the sludge thickening tank 23 for treatment; the scum degassing tank 22 and the sludge storage tank 23 are both provided with a submersible mixer 33 .

A feed water treatment method, based on the feed water treatment device, comprises the following steps: raw water flows through a pre-ozone contact tank, a mixing tank, a flocculation reaction tank, an air flotation sedimentation tank, a sand filter tank, a main ozone contact tank, Biological activated carbon filter, disinfection contact pool and clean water pool. Among them, the drug dosage range: flocculant (PAC): 3 ~ 6mg/L (calculated as solid), coagulation aid (HCA): 0.5 ~ 1mg/L (calculated as solid), pre-ozone (O ₃ ): 0.5 ~ 1.5mg/L, main ozone (O ₃ ): 0.5～1.5mg/L, disinfection contact pool disinfectant (NaClO): 10～20mg/L (10% concentration), clear water pool disinfectant (NaClO): 10～20mg /L (10% concentration).

During production and operation, the raw water first enters the pre-ozone contact tank 1, and pre-oxidizes the algae, odor substances, and organic matter in the raw water through ozone. The grid flocculation reaction tank 6, the effluent of the flocculation reaction tank 6 enters the air flotation sedimentation tank 10, the effluent of the air flotation sedimentation tank 10 enters the sand filter, and the sand filter effluent enters the main ozone contact tank 25, and passes through the main ozone contact tank After 25 treatment, enter the bioactive carbon filter 29 for processing, and the effluent of the bioactive carbon filter 29 enters the disinfection contact pool 30 for processing through the connecting pipeline 36, and enters the clear water pool after the chlorine disinfection in the disinfection pool 30, and after the effluent of the clear water pool replenishes chlorine, It is sent to the water distribution pipe network through the water delivery pump room.

When the raw water turbidity is low at 0-70NTU, or the algae content is greater than or equal to 60 million/L, the air flotation sedimentation tank 10 operates the air flotation process: the water after the flocculation reaction enters the air flotation sedimentation tank 10. After mixing with the dissolved air water released by the dissolved air water release device 8, the flocs adhere to air bubbles and float up to the liquid surface to form scum, and the clear water separated from the flocs is collected by the air flotation water collection pipe 11 and then enters The air flotation outlet channel 13, and the outlet water of the air flotation outlet channel 13 enters the sand filter tank for processing.

When the raw water turbidity is higher than 70NTU, and the air flotation process cannot meet the water discharge requirements, the air flotation sedimentation tank 10 is switched to run the sedimentation process: the water after flocculation reaction enters the air flotation sedimentation tank 10, and then flows through the inclined plate device 38. Due to the blocking of the flocs by the inclined plate device 38, the flocs slide to the bottom of the pool to form mud deposits. The mud deposits are scraped by the mud scraper 37 at the bottom of the pool to the mud pit 43 at the end of the pool, and the mud discharge valve 42 is opened to remove the mud deposits. Discharge to the slag and mud discharge sedimentation tank 21; and the clear water separated from the flocs flows through the inclined plate device 38, flows through the perforated flower wall 39 at the end of the pool, and then enters the sedimentation outlet channel 41 through the sedimentation outlet weir 39, and the sedimentation outlet channel 41 The effluent then enters the sand filter for treatment.

During the process of production wastewater treatment, the scum in the air flotation sedimentation tank 10 is scraped into the slag discharge tank 12 by the slag scraper 9, and then flows into the scum degassing tank 22, and the scum is degassed and degassed by the agitator 33 in the tank. The final scum is sucked to the scum discharge sedimentation tank 21 by the sludge pump 32. After the scum suction is completed, the scum degassing tank 22 can receive the scum again. After the scum enters the slag and mud discharge sedimentation tank 21, it begins to settle still. When the precipitation is completed, the supernatant is sucked through the decanter 19, the supernatant liquid pipe 34 and the water pump 35 to return to the raw water pipe 46, and the supernatant liquid is pumped After the suction is completed, the sludge is sucked to the sludge thickening tank 23 by the sludge pump 32 for thickening. 21 can be used to discharge mud again.

During the production wastewater treatment process, the bottom sludge in the grid flocculation reaction tank 6 is collected through the perforated sludge discharge pipe 17 and then flows into the sludge discharge channel 15, and then flows into the slag discharge and sludge discharge sedimentation tank 21 through the sludge discharge pipe 45. When the tank is full , static precipitation, when the precipitation is completed, the supernatant is sucked back to the raw water pipe 46 through the decanter 19, the supernatant pipe 34 and the water pump 35, and after the suction of the supernatant is completed, the sludge is pumped by the sludge pump 32 It is sucked to the sludge thickening tank 23 for thickening. After the sludge suction is completed, the slag and mud discharge sedimentation tank 21 can be connected to the sludge discharge.

During the production wastewater treatment process, the sand filter or biological activated carbon filter 29 backwashes water, flows into the backwash wastewater sedimentation tank 20 through the backwash wastewater channel 28, and when the pool is full, it settles still. After the sedimentation is completed, it passes through the decanter 19. The supernatant pipe 34 and the water pump 35 suck the supernatant back to the raw water pipe 46. After the supernatant suction is completed, the sludge is sucked to the sludge concentration tank 23 by the sludge pump 32 for concentration. After the mud suction is completed, the backwash waste water settling tank 20 can be connected to backwash drainage.

During the treatment of production wastewater, after the sludge concentration in the sludge concentration tank 23 is completed, the supernatant is discharged to the municipal pipe network through the decanter 19, and after the supernatant is pumped, the sludge pump 32, The sludge is sucked to the sludge storage tank 24. After the sludge thickening tank is emptied, the discharged sludge can be accepted again. The sludge in the sludge storage tank 24 is dehydrated and then transported outside.

By adopting the technical solution of the present invention, the detection results of the treatment effects under different water quality conditions are as follows.

(1) Incoming water flows through "pre-ozone contact tank→mechanical mixing tank→grid flocculation reaction tank→air flotation sedimentation tank→sand filter tank→main ozone contact tank→biological activated carbon filter→disinfection contact tank→clean water tank" , when the influent turbidity is 40-60NTU, the air flotation sedimentation tank is switched to operate the air flotation process, and the key water quality index values are as follows:

(2) Influent water flows through "pre-ozone contact tank→mechanical mixing tank→grid flocculation reaction→air flotation sedimentation tank→sand filter tank→main ozone contact tank→biological activated carbon filter→disinfection contact tank→clean water tank", When the influent turbidity is 120-370NTU, the air flotation sedimentation tank is switched to operate the sedimentation process, and the key water quality index values are as follows:

The above are only preferred embodiments of the present invention, and should not limit the scope of the present invention with this, that is, all simple equivalent changes and modifications made according to the patent scope of the present invention and the description of the invention are still the same. It belongs to the scope covered by the patent of the present invention.

Claims (11)

1. a kind of Water feeding treatment device, including preprocessing module, Treatment of Sludge module, sand filter, advanced treating module and clear water Pond, which is characterized in that the preprocessing module is connect with the sand filter, and the sand filter connects with the advanced treating module It connects, the advanced treating module is connect with the clear water reserviors；The preprocessing module, sand filter and advanced treating module and sludge Processing module connects, and the Treatment of Sludge module is connect by pipeline with the entrance of the preprocessing module；The pretreatment mould Block, sand filter, advanced treating module and Treatment of Sludge module adjoin setting, and the preprocessing module, sand filter and depth Processing module is located at the Treatment of Sludge module top, at the preprocessing module, sand filter and advanced treating module and sludge Reason module is connected by channel.

2. a kind of Water feeding treatment device according to claim 1, which is characterized in that the preprocessing module includes pre- ozone The gentle floating sedimentation basin of contact chamber, mixing pit, flocculation tank, the pre- ozone contact tank is adjacent with mixing pit, and in bottom of pond portion It is connected by communication port；The mixing pit is adjacent with the flocculation tank, and is connected in Chi Ding by unicom canal, the flocculation Reaction tank is adjacent with the air supporting sedimentation basin, and passes through tracery wall unicom of perforating in bottom of pond.

3. a kind of Water feeding treatment device according to claim 2, which is characterized in that set on the pre- ozone contact tank pre- Ozone throwing device and tail gas breaking plant.

4. a kind of Water feeding treatment device according to claim 1, which is characterized in that the air supporting sedimentation basin include pond body, Perforate tracery wall, dissolved air water release, sloping plate unit, air supporting collector pipe, ash pit, Slag Scraping Device, mud scraper, deposition hole, mud valve, Precipitate effluent weir, precipitation outlet canal, air supporting outlet canal；The perforation tracery wall sets 2 altogether, wherein 1 is set on pond body water inlet end Bottom side wall, highly 1/6 for pond body height, in addition 1 tail portion side wall for being set on pond body water outlet sloping plate unit, is highly pond The 1/2 of body height；The dissolved air water release is set on by pond body water inlet end bottom perforated tracery wall；The sloping plate unit is set in pond Under the water surface, length is the 2/3 of pond body length, highly 1/2 for pond body height；The air supporting collector pipe is close to sloping plate unit Bottom is set, and is connect with air supporting outlet canal；The ash pit is set on pond body tail portion, and notch is located on the water surface；The Slag Scraping Device is set On track at the top of the pond body, the bottom setting scraper plate of the Slag Scraping Device is contacted with the water surface, during the motion floating the water surface Slag is scraped to ash pit；The mud scraper is close to the bottom setting of pond body, positioned at air supporting collector pipe lower part, the bottom of the mud scraper Setting scraper plate is contacted with the bottom of pond surface, scrapes pool bottom sludge to deposition cheat during the motion；The mud valve is set on product Mud pit bottom；The precipitation effluent weir is set on pond body tail end, is connect with the perforation tracery wall of pond body tail end；The air supporting outlet canal with It is adjacent to precipitate effluent weir.

5. a kind of Water feeding treatment device according to claim 1, which is characterized in that it is smelly that the advanced treating module includes master Oxygen contact chamber, biological activated carbon filter and antisepsis contact tank, the main ozone contact tank, biological activated carbon filter, disinfection Contact chamber adjoins and is connected by connecting canal successively.

6. a kind of Water feeding treatment device according to claim 1, which is characterized in that the Treatment of Sludge module includes recoil Wash effluent settling chamber, deslagging spoil disposal sedimentation basin, scum silica frost degassing pond, sludge concentration tank and sludge storage pool；The backwashing wastewater sinks Shallow lake pond, deslagging spoil disposal sedimentation basin, scum silica frost degassing pond, sludge concentration tank and sludge storage pool adjoin setting and are precipitated positioned at air supporting successively Below pond.

7. a kind of feedwater treatment method, based on any Water feeding treatment devices of claim 1-6, including the step of such as Under：Raw water followed by pre- ozone contact tank, mixing pit, flocculation tank, air supporting sedimentation basin, sand filter, main ozone contact tank, Biological activated carbon filter, antisepsis contact tank and clear water reserviors, which is characterized in that

(1) when raw water turbidity is in higher situation of the relatively low situation or algae content of 0~70NTU more than or equal to 6,000 ten thousand/L When, air supporting sedimentation basin operation air-float technology：The water outlet of flocculation tank enters air supporting sedimentation basin, then with dissolved air water release institute The dissolved air water mixing of release, flco float up to liquid level formation scum silica frost after adhering to the micro-bubble of dissolved air water release, are detached with flco Clear water afterwards enters air supporting outlet canal after being collected via air supporting collector pipe, and the water outlet of air supporting outlet canal is entered back at sand filter Reason；

(2) when raw water turbidity is more than the higher situation of 70NTU, air supporting sedimentation basin switchover operation depositing technology：Flocculation tank Water after flocculation reaction enters air supporting sedimentation basin, then flows through sloping plate unit, and flco slides to bottom of pond under the blocking of sloping plate unit Deposition is formed, deposition is scraped by the mud scraper of bottom of pond to the deposition hole of pond end, and the mud valve of deposition hole bottom is opened, by deposition Drain into deslagging spoil disposal sedimentation basin；And after the clear water detached with flco flows through sloping plate unit, the perforation tracery wall for flowing through pond end enters Effluent weir is precipitated, then enters precipitation outlet canal via precipitation effluent weir, the water outlet for precipitating outlet canal is entered back at sand filter Reason.

8. a kind of feedwater treatment method according to claim 7, which is characterized in that during production wastewater treatment, air supporting The scum silica frost of sedimentation basin is scraped by Slag Scraping Device into the ash pit positioned at pond end, then flows into scum silica frost degassing pond, when scum silica frost degassing pond is filled Afterwards, it deaerates after scum silica frost is broken up by the blender in pond, the scum silica frost after degassing is pumped to deslagging spoil disposal precipitation by sludge pump Pond, after the completion of scum silica frost suction, scum silica frost degassing pond can receive scum silica frost again；After deslagging spoil disposal sedimentation basin is filled, start quiescent setting, After the completion of precipitation, supernatant suction is back to by raw water tubes by water decanter, supernatant liquid pipe and water pump, supernatant suction is completed Afterwards, by sludge pump, sludge is pumped to sludge concentration tank and is concentrated, after the completion of sludge suction, deslagging spoil disposal sedimentation basin can Scum silica frost is received again.

9. a kind of feedwater treatment method according to claim 7, which is characterized in that during production wastewater treatment, flocculation The sludge of reaction tank flows into spoil disposal canal after being collected by perforated sludge discharge pipe, enters deslagging spoil disposal sedimentation basin after passing through sludge pipe, After deslagging spoil disposal sedimentation basin is filled, start quiescent setting, after the completion of precipitation, supernatant is aspirated by water decanter and water pump and is returned Raw water tubes are flow to, after the completion of supernatant suction, by sludge pump, sludge is pumped to sludge concentration tank and is concentrated, sludge is taken out After the completion of suction, deslagging spoil disposal sedimentation basin can receive sludge again.

10. a kind of feedwater treatment method according to claim 7, which is characterized in that during production wastewater treatment, sand filtration Pond or biological activated carbon filter backwash draining, flow into backwashing wastewater sedimentation basin by pipeline or channel, work as backwashing wastewater After sedimentation basin is filled, start quiescent setting, after the completion of precipitation, supernatant is aspirated by water decanter, supernatant liquid pipe and water pump and is returned Raw water tubes are flow to, after the completion of supernatant suction, by sludge pump, sludge is pumped to sludge concentration tank and is concentrated, sludge is taken out After the completion of suction, backwashing wastewater sedimentation basin can receive backwash draining again.

11. a kind of feedwater treatment method according to claim 7, which is characterized in that during production wastewater treatment, work as dirt After mud thickener is filled, start precipitation concentration, after the completion of concentration, city planting ductwork, supernatant will be drained into outside supernatant by water decanter After liquid is drained, by sludge pump, sludge is pumped to sludge storage pool, blender works at the same time, can be again after sludge concentration tank emptying Receive the sludge that is discharged into, the sludge in sludge storage pool is transported outward after dehydration.