CN211595255U

CN211595255U - High-concentration sewage deep purification and recycling system

Info

Publication number: CN211595255U
Application number: CN201921452095.5U
Authority: CN
Inventors: 廖泰泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-15
Filing date: 2019-08-30
Publication date: 2020-09-29
Anticipated expiration: 2029-08-30
Also published as: CN110921883A

Abstract

The utility model discloses a high-concentration sewage deep purification and recycling system, which comprises a deep purification recycling tank, wherein the deep purification recycling tank comprises a main tank body, an ascending mixer, a purifier and a collector; forming a suspended mud zone region between the collector and the clarifier; a filter bead layer is arranged at the top of the purifier, a bypass return pipeline is formed between the main tank body and the purifier, the lower end of the bypass return pipeline is communicated with the sludge deposition area, and the upper end of the bypass return pipeline is communicated with the middle part of the filter bead layer in the vertical direction; a branch pipe communicated with the bypass return pipeline is arranged in the filter layer. The deep purification and reuse method is that chemical agent is mixed with sewage to produce chemical reaction, so that pollutant in dissolved state in sewage is separated out to form floc grains, and suspended sludge layer is formed naturally in the suspended sludge layer area for deep purification to obtain reusable water. The utility model discloses can carry out deep purification and realize the retrieval and utilization to the sewage of high concentration.

Description

High-concentration sewage deep purification and recycling system

Technical Field

The utility model relates to a high concentration sewage treatment system, especially high concentration sewage deep purification and recycling system

Background

Contaminants are present in sewage primarily in "suspended solids", "colloidal particles" and "dissolved" states. The highly polluted sewage is mainly divided into "high concentration sewage" and "high turbidity sewage", wherein the "high concentration sewage" refers to sewage with the content of dissolved organic pollutants (CODcr) in the water higher than 1000 mg/L, and the "high turbidity sewage" refers to sewage with the content of suspended solid pollutants in the water higher than 500mg/L, and the two have essential differences.

Due to rapid development of urban and rural economy, great increase of the number of industrial enterprises and change of natural climate in China, the water quality of industrial sewage, domestic sewage and natural water areas often becomes high-concentration sewage with the content of dissolved organic pollutants (CODcr) higher than 1000 mg/L, such as sewage of industries of paper making and pulping, petroleum exploitation, textile printing and dyeing, waste plastic washing, lake blue-green algae, leather tanning, urban sewage treatment plants and the like, and source water polluted by the sewage.

At present, Chinese people have more water and less water, the contradiction between water supply and demand is prominent, the water shortage reaches 500 cubic meters in normal years in China, the red light is fully lightened in water safety, meanwhile, the whole society in China has weak consciousness on water saving, extensive water consumption and serious waste, the utilization rate of water resources is low, and the difference between the water resource utilization rate and the international advanced level is large.

Data show that in 2017, the effective utilization coefficient of the irrigation water of the farmland in China is only 0.54, and the difference of the effective utilization coefficient and the coefficient of 0.7 to 0.8 of developed countries is large; the water consumption of the ten thousand yuan industrial added value is 45.6 cubic meters, which is 2 times of the world advanced level; the water consumption of the ten thousand dollar GDP is about 500 cubic meters, and the water consumption of developed countries is basically below 300 cubic meters.

In order to gradually improve the water use efficiency of various fields and industries and improve the water saving consciousness of the whole people, the country pays attention to sewage treatment and reutilization, and the aim can be realized only by innovation of water treatment technology.

In the sewage treatment technical equipment industry of China, most sewage treatment systems adopt the traditional process, the traditional sewage treatment process mainly comprises primary treatment and secondary treatment, the primary treatment is to carry out primary treatment on water by a mechanical means, the secondary treatment is to carry out treatment by a biochemical treatment method, the target is only up to the standard and discharge, and the three-level advanced treatment is rarely adopted.

Based on the current situation of sewage treatment technical equipment in China, the traditional sewage treatment technical system can not treat high-concentration sewage containing eutrophication substances, especially high-concentration sewage containing substances (such as lignin, phosphorus and the like) which are difficult to be biochemically degraded. Therefore, effluent treated by national enterprise sewage treatment stations, industrial park sewage treatment plants and urban sewage treatment plants generally cannot reach the current increasingly strict environmental-friendly discharge standard and can not be recycled, so that the social problems of serious water environment pollution and water quality water shortage are caused.

In the tap water preparation industry of China, 99 percent of tap water plants still use the conventional process decades ago, and the basic treatment process is as follows: raw water- > first class pump house- > add medicine- > flocculation basin- > deposit or clarification tank + filtering pond- > disinfect clear water basin- > second class pump house- > user. Wherein, three-step treatment process is referred to as 'old third-level': flocculation (adding polyaluminium chloride), filtration (quartz sand, pebble), and disinfection (adding chlorine or bleaching powder). These conventional processes are mainly used for removing suspended substances, colloidal particle impurities and bacteria from water sources, and are only suitable for type II water quality with slight pollution. Because the deep purification function of fine filtration is not available, the removal capacity of the soluble organic matters and heavy metal ions is relatively insufficient; and residual chlorine residue formed by excessive chlorine adding sterilization also forms 'triproducts' (carcinogenesis, teratogenicity and mutagenicity). Therefore, in the present day that the quality of water source is continuously deteriorated, the tap water prepared by many city water works can not reach the latest tap water quality standard in the present country.

Naturally, with the development of the world's demand and technology, there is a better method for treating high turbidity sewage, for example, in the US invention patent document US6358407B1, a high turbidity sewage treatment system and method (the inventor of the US invention patent is tai laoquan of the applicant of the present invention) specifically includes a chemical tank, a water pump, a mixing pipe connected by a plurality of U-shaped pipes, a ceramic ball tank, a main tank body, etc. the principle is that a coagulation flocculant is added into the chemical tank, sewage and coagulation flocculant are sucked into the mixing pipe by the water pump, when sewage passes through the mixing pipe, because the flowing direction of the liquid is changed, turbulence is easily formed in the mixing pipe, sewage and chemical are fully mixed and then delivered into the ceramic ball tank, sewage is further mixed by the ceramic balls in the ceramic ball tank and then enters the circular main tank body tangentially, sewage flows at the internal formation point vortex of main tank, be convenient for let sewage and medicament intensive mixing, make coagulating flocculant's absorption more abundant, it has the floc grow of suspended solid to pile up at the internal formation suspension mud layer of jar after, utilize the suspension mud layer to filter water, and utilize the hydraulics principle, let in the mud of continuous deposit enters into the mud collection tank, with water and sludge separation, high turbidity sewage is discharged jar body, realization retrieval and utilization after being filtered by the suspension mud layer.

However, the high-turbidity sewage treatment system and the process thereof mainly aim at purifying undissolved suspended solids in sewage, and the treatment of high-concentration sewage containing substances (such as lignin, phosphorus and the like) which are dissolved in pollutants and are difficult to be biochemically degraded in particular is still a problem which is urgently expected to be solved by society at present, and the realization of recycling the effluent after the sewage treatment is more urgently expected by society. Only if the advanced purification and recycling of high-concentration sewage are further realized, the utilization rate of water resources in China can be greatly improved, and the optimal goals of treating pollution and saving water are achieved.

Disclosure of Invention

The utility model aims at providing a can carry out the high concentration sewage deep purification and recycling system that deep purification and ability retrieval and utilization are carried out to the high concentration sewage that the dissolved state organic pollutant content (CODcr) is higher than 1000 milligrams/liter in aquatic.

In order to achieve the aim, the high-concentration sewage deep purification and recycling system comprises a deep purification recycling tank, wherein the deep purification recycling tank comprises a main tank body, a rising mixer, a purifier, a collector and a sludge deposition area; the ascending mixer is arranged in the lower end of the main tank body, the lower end of the ascending mixer is provided with a water inlet, and a mixing area is arranged in the ascending mixer; a sludge deposition area is arranged between the main tank body and the rising mixer; the purifier is arranged at the upper end of the rising mixer, a purifying area communicated with the mixing area is arranged in the purifier, the collector is arranged in the mixing area and the purifying area, a collecting area is arranged in the collector, and the collecting area is communicated with the sludge deposition area; forming a suspended mud zone region between the collector and the clarifier; the ascending flow velocity of the suspended mud layer area is less than that of a mixing area outside the periphery of the collector, and the ascending flow velocity of a purification area above the collector is less than that of the suspended mud layer area; the top of the purifier is provided with a plastic filter bead layer, a bypass return pipeline is arranged between the main tank body and the purifier, the lower end of the bypass return pipeline is communicated with the sludge deposition area, and the upper end of the bypass return pipeline is communicated with the middle part of the plastic filter bead layer in the vertical direction; the plastic filtering bead layer is internally provided with a branch-shaped pipe communicated with the bypass return pipeline, and the branch-shaped pipe is provided with more than four branch-shaped pipe interfaces respectively communicated with the corresponding bypass return pipelines; the pressure at the interface of the branch pipe is less than the pressure on the upper surface of the suspended mud layer area.

The high-concentration sewage deep purification and recycling system comprises: adding chemical agents into the sewage before entering the water inlet, wherein the chemical agents comprise inorganic polymer polymerization agents with the volume percentage concentration of 6-10 ml/L, sterilization and disinfection agents with the volume percentage concentration of 12-16 ml/L, solid powder adsorption agents with the volume percentage concentration of 400-600 ml/L, polymer inorganic electrolyte agents with the volume percentage concentration of 14-18 ml/L and water-soluble long-chain organic polymer flocculation agents with the volume percentage concentration of 12-16 ml/L; before the sewage enters the rising mixer, the sewage is fully mixed with a chemical agent, and a chemical reaction and physical adsorption are started; then sewage and chemical agents enter the ascending mixer through the water inlet, the sewage continuously rotates and ascends in the ascending mixer, and meanwhile, pollutants in a dissolved state in the sewage are separated out through chemical reaction to form suspended particles and colloidal particles with a solid phase interface; adsorbing pollutants and chromaticity in water through physical adsorption; flocculating the suspended particles and the colloidal particles into flocs by using an inorganic polymer polymerization agent and a water-soluble long-chain organic polymer flocculation agent; when water rises to the position of the suspended sludge layer area, the condensed flocs are accumulated into a compact suspended sludge layer in the suspended sludge layer area, and the sewage is filtered and deeply purified when passing through the suspended sludge layer by virtue of the mechanical filtration and the microscopic adsorption of the suspended sludge layer; in the suspended sludge layer area, under the action of pressure difference pointing to the center caused by point vortex flow, sludge is rapidly gathered towards the center; the upper layer sludge of the suspended sludge layer is quickly introduced into the collector under the action of the pressure difference between the upper end of the bypass return pipeline and the upper layer of the suspended sludge layer; the sludge flows into the sludge deposition area from the collector to be efficiently concentrated. The water after the deep purification of filtration and the water that flows back from the bypass return line are collected into clean reuse water after being filtered again on the plastic filter bead layer, and the clean reuse water is discharged out of the main tank body and recycled.

The high-concentration sewage deep purification and recycling system has the advantages that pollutants in a dissolved state in high-concentration sewage are separated out by means of chemical reaction, the particle size of formed particles is extremely small, and the particle size is only about 1 micron, so that the ascending flow velocity of a suspended mud layer area is required to be smaller than that of a mixing area outside the periphery of a collector, the ascending flow velocity of a purification area above the collector is smaller than that of the suspended mud layer area, and thus, the suspended mud layer with a fine filtering effect can be stably formed. This requires increasing the cross-sectional area of the main tank and adjusting the size of each critical section in the main tank accordingly. The branch pipe is provided with more than four branch pipe interfaces which are respectively communicated with the corresponding bypass return pipelines, and the more than four branch pipe interfaces are generally uniformly arranged on the circumference, so that the formation of a backflow blind area in the deposition area is reduced, and the clear water in the deposition area uniformly flows back into the plastic filter bead layer.

Furthermore, a mixed flow pipe is connected to the water inlet and tangentially connected to the rising mixer. The sewage tangentially enters the rising mixer from the water inlet to form point vortex flow, so that the probability of collision between particles and chemical agents is greatly increased, and extremely high coagulation and flocculation effects are obtained. The pressure difference pointing to the center formed by the point vortex flow greatly improves the shunting speed and the shunting effect of the sludge in the rising mixer.

Furthermore, the water pump is further included, the water outlet end of the water pump is connected with a bent pipe, the water outlet end of the bent pipe is connected with a ceramic ball tank, a ceramic ball is arranged in the ceramic ball tank, a guide pipe is connected between the upper end of the ceramic ball tank and the mixed flow pipe, the water inlet end of the water pump is connected with a water inlet pipe, and the water inlet pipe is connected with a medicament container. The working method comprises the following steps: each special chemical agent is added into each agent container. When the water pump works, chemical agents and sewage enter the water inlet pipe and are pumped into the bent pipe, the sewage and the chemical agents are mixed in the bent pipe and then enter the ceramic ball tank, the sewage and the agents are further mixed through the ceramic balls in the ceramic ball tank, and the fully mixed sewage enters the rising mixer through the tangential direction of the guide pipe. The structure relies on the serpentine tube reactor formed by the bent tubes, and utilizes the turbulent cutting action mechanism of each bent part to obtain the effect of efficiently mixing chemical agents with sewage, thereby fully playing the role of each agent; the flow resistance is very small, which plays a role in greatly reducing power consumption.

Furthermore, the plastic filter bead layer is a foam plastic bead layer formed by foam plastic beads. In the structure, the backflow of the bypass backflow pipeline is formed by depending on the filtering hydromechanical principle of the foam plastic bead layer, the effect of uniformly and quickly draining the sludge in the main tank body into the collector is achieved, the effect of efficiently concentrating the sludge in the sludge deposition area is also achieved, the water content of the slurry discharged by the system is extremely low, and the volume of the sludge discharged by the system is greatly reduced.

Furthermore, the branched pipe joints are uniformly distributed in the circumferential direction.

Furthermore, a nylon filter head filtering device for preventing the foam plastic beads from losing is arranged at the upper end of the plastic filtering bead layer, and the filtering device can not only allow water to pass, but also resist the leakage and loss of the foam plastic beads.

The utility model discloses with the deep purification and the recycling of pure physical chemistry method, high-efficient and economically realize high concentration sewage, economic technology index reaches the leading level in the world, is a great technological innovation in the water treatment technical field in the world.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a schematic view of a deep purification and reuse tank.

Figure 3 is a top view of a deep purification recovery tank.

Fig. 4 is a bottom view of the deep purification and reuse tank.

FIG. 5 is a schematic view of a branched pipe.

FIG. 6 is a schematic view of a hydraulic elbow.

Fig. 7 is a schematic view of a ceramic spherical tank.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the high concentration sewage deep purification and reuse system includes a water inlet pipe 10, a water pump 45, an elbow pipe 54, a conduit 11, a ceramic spherical tank 58, a mixed flow pipe 14, a deep purification reuse tank 12 and a medicament container 52.

The inlet end of the inlet pipe 10 is connected to the interior of the sump 50 and the outlet end of the inlet pipe 10 is connected to the inlet end of the pump 45. The water outlet end of the water pump 45 is connected to the water inlet end of the elbow pipe 54 through a flange 15, the elbow pipe 54 is composed of a plurality of continuous U-shaped pipes 56, the water outlet end of the elbow pipe 54 is connected to the water inlet end of the ceramic ball tank 58 through the flange 15, the water inlet end of the ceramic ball tank 58 is located at the lower end of the ceramic ball tank 58, a plurality of ceramic balls 60 are arranged in the ceramic ball tank 58, the water outlet end of the upper end of the ceramic ball tank 58 is connected with the water inlet end of the guide pipe 11 through the flange 15, the water outlet end of the guide pipe 11 is connected to the water inlet end of the mixed flow pipe 14, and the guide pipe 11. The medicine containers 52 are connected to the water inlet pipe 10 through a pipeline, a throttle valve 24 is arranged on the pipeline, in the embodiment, the medicine containers 52 comprise a first medicine container, a second medicine container, a third medicine container, a fourth medicine container and a fifth medicine container which are sequentially arranged from left to right, each medicine container 52 is used for containing different chemical medicines, wherein, inorganic polymer polymerization medicines with the volume percentage concentration of 6-10 ml/L are put into the first medicine container, sterilization medicines with the volume percentage concentration of 12-16 ml/L are put into the second medicine container, solid powder adsorption medicines with the volume percentage concentration of 400-600 ml/L are put into the third medicine container, polymer inorganic electrolyte medicines with the volume percentage concentration of 14-18 ml/L are put into the fourth medicine container, adding water-soluble long-chain organic polymer flocculating agent with the volume percentage concentration of 12-16 ml/L into a fifth agent container.

As shown in fig. 2 to 4, the deep purification reuse tank 12 includes a main tank 121, an upmixer 122, a purifier 123, a collector 124, and a sludge settling zone 35.

The top end of the main tank body is provided with a water outlet 44. The ascending mixer 122 is arranged in the lower end of the main tank body 121, a water inlet is arranged at the lower end of the ascending mixer 122, the mixed flow pipe 14 is connected to the water inlet, the mixed flow pipe 14 is tangentially connected to the ascending mixer, a mixing area 16 is arranged in the ascending mixer 122, and the lower end of the section of the ascending mixer is smaller than the upper end; a sludge deposition area 35 is arranged between the main tank body 121 and the rising mixer 122, a sewage outlet 63 communicated with the sludge deposition area is arranged at the bottom of the main tank body, a sewage discharge pipe is connected to the sewage outlet, and a throttle valve 24 is arranged on the sewage discharge pipe; the purifier 123 is arranged at the upper end of the rising mixer 122, a purifying area 1231 communicated with the mixing area is arranged in the purifier 123, the collector 124 is arranged in the mixing area 16 and the purifying area 1231, a collecting area 1241 is arranged in the collector 124, the collecting area 1241 is communicated with the sludge deposition area 35, and particularly, the collecting area 1241 is communicated with the sludge deposition area 35 through a pipeline passing through the mixing area; a suspended mud zone region 120 is formed between the collector 124 and the clarifier 123; a plastic filtering bead layer 36 is arranged on the top of the purifier 123, and the plastic filtering bead layer is a foam plastic bead layer formed by foam plastic beads 38; the upper end of the plastic filtering bead layer is provided with a filtering device which is a nylon filter head, and the filtering device can not only allow water to pass, but also prevent the leakage and the loss of the foam plastic beads; a bypass return pipe 42 is arranged between the main tank body 121 and the purifier 123, and the lower end of the bypass return pipe 42 is communicated with the sludge deposition area 35; the inside of the plastic filtering bead layer is provided with a branch pipe 40 communicated with the bypass return pipeline, the branch pipe 40 is provided with four branch pipe interfaces 41 connected with the bypass return pipeline, and the upper ends of the bypass return pipeline are respectively connected to the branch pipe interfaces 41. The delivery port at the main tank body is connected with clean inlet tube, is equipped with choke valve 24 on clean inlet tube, is connected with water pipe 62 between clean inlet tube and bypass return line, is equipped with choke valve 24 on the water pipe 62, is connected with the retrieval and utilization water pipe on the delivery port, is equipped with choke valve 24 on the retrieval and utilization water pipe, and the retrieval and utilization water pipe is connected with retrieval and utilization pond 100.

The working method of the system comprises the following steps: chemical agents are added into the agent containers 52, specifically, inorganic polymer polymeric agents with the volume percentage concentration of 6-10 ml/L are added into a first agent container, sterilizing and disinfecting agents with the volume percentage concentration of 12-16 ml/L are added into a second agent container, solid powder adsorption agents with the volume percentage concentration of 400-600 ml/L are added into a third agent container, polymer inorganic electrolyte agents with the volume percentage concentration of 14-18 ml/L are added into a fourth agent container, and water-soluble long-chain organic polymer flocculating agents with the volume percentage concentration of 12-16 ml/L are added into a fifth agent container. When the water pump 45 works, the chemical agent and the sewage in the sewage pool 50 enter the water inlet pipe 10 and are pumped into the serpentine pipe reactor formed by the bent pipe 54, the effect of high-efficiency mixing of the chemical agent and the sewage is obtained by utilizing the turbulent flow cutting action mechanism of each bent part 56, the functions of various chemical agents are fully exerted, the flow resistance is very small, and the effect of greatly reducing the power consumption is achieved; the sewage and the chemical agent are mixed and then enter the ceramic ball tank, the effect of efficiently mixing the chemical agent and the sewage is obtained through the skin effect action mechanism of water flow in the ceramic ball tank on a ceramic spherical surface, the flow resistance is very small, and the effect of greatly reducing power consumption is also achieved.

The sewage passing through the ceramic ball tank enters the rising mixer 122 tangentially through the guide pipe and the mixed flow pipe, so that the water flow forms point vortex flow in the rising mixer 122. Thereby greatly increasing the chances of collision between particles and coagulation agents and obtaining extremely high coagulation and flocculation effects. The pressure difference pointing to the center formed by the point vortex flow greatly improves the shunting speed and the shunting effect of the sludge in the rising mixer. In the ascending mixer, the sewage continuously spirally ascends, and pollutants in a dissolved state in the sewage are separated out through chemical reaction to form suspended particles and colloidal particles with a solid phase interface; adsorbing pollutants and chromaticity in water through adsorption, and condensing suspended particles and colloid particles into floc particles; when the water rises to the position of the suspended mud layer area 120, the rising flow velocity of the suspended mud layer area is less than that of the mixing area outside the periphery of the collector, and the rising flow velocity of the purification area above the collector is less than that of the suspended mud layer area, so that the condensed floc particles are accumulated into a compact suspended mud layer 26 in the suspended mud layer area 120, and the sewage passes through the suspended mud layer 26 through the mechanical filtration and the microscopic adsorption action of the suspended mud layer 26 to finish the deep filtration and purification of the sewage; in the suspended sludge layer area, under the action of pressure difference pointing to the center caused by point vortex flow, sludge is rapidly gathered towards the center; the upper sludge layer of the suspended sludge layer 26 is rapidly introduced into the collector 124 under the action of the pressure difference between the upper end of the bypass return pipe and the upper layer of the suspended sludge layer; the sludge flows from the collector into the sludge settling zone 35 to be concentrated efficiently. The water after deep filtration and purification and the water returned from the bypass return pipeline are collected into clean reuse water after being filtered again on the filter bead layer, and the clean reuse water is discharged out of the main tank body and regenerated for reuse.

The utility model firstly adds different chemical agents in corresponding agent containers aiming at different pollutants in sewage, utilizes chemical reaction to separate out organic pollutants, harmful metal ions and the like in a dissolved state in the sewage from a real solution state to form colloidal particles and micro suspended particles with a solid phase interface, and then adopts a physical chemical adsorption method to agglomerate various colloidal particles and suspended particles in the sewage into massive compact flocs; then the floc is quickly separated from the water by depending on the fluid mechanics principle in a high-concentration sewage deep purification and recycling system; the water reaches the level of advanced treatment after being finely filtered by a stable and thick suspended mud layer naturally formed in the suspended mud layer area, and the water is discharged after treatment

The water is recycled and reused without being discharged. The sludge is concentrated in the sludge deposition area of the utility model and is discharged periodically, and the sludge can be reused as resources after dehydration or used for manufacturing sidewalk floor tiles.

The utility model discloses water purification technology drops into an "inorganic polymer polymerization medicament" (6-10 ml/L) in to sewage, can emit a large amount of hydrogen ions (H) among its hydrolysis reaction process, and these H ions are used for replacing the metal ion on the organic matter molecule in the sewage just, and generate insoluble in water, have the particle of colloid characteristic, can separate out from sewage through the method of coagulating to play the effect of desorption organic pollutant in the sewage. The inorganic polymer agent added into the sewage can generate a large amount of high-valence ions when being hydrolyzed, and the high-valence ions and the colloid particles generate strong electric neutralization and adsorption effects and have certain coagulation effect.

The process of the utility model also puts in sterilizing and disinfecting agent (12-16 ml/L) into the sewage to completely kill bacteria and colibacillus, so that the water quality in the deep purification and recycling system can be kept in good state and can not be rotten and smelly.

The process of the utility model also puts solid powder adsorption medicament into the sewage "

(400-600 ml/L), and removing some pigments, solvents, organic pollutants and other harmful substances in the sewage by surface physical adsorption.

The utility model discloses the technology still drops into another kind "polymer inorganic electrolyte medicament" (14-18 ml/L) to sewage, and the ionization is the high valence ion of positively charged in aqueous, makes the relative increase of ion density in the sewage, and the diffusion layer space volume of the electric field effect scope of the colloid particle that makes tiny fibre and particle constitute in the sewage dwindles, and has reduced the stability of sol system. In addition, the positively charged high valence ions also play an electrical neutralization role when colliding with the negatively charged colloidal particles. The inorganic polymer electrolyte has high molecular weight and can play a certain role in bridging flocculation.

Simultaneously, the utility model discloses the technology still drops into "water-soluble long chain form organic polymer flocculation medicament" (12-16 ml/L), and chain form molecule has a plurality of functional groups, leans on electrostatic attraction and adsorption, and one end adsorbs on wadding group or micelle surface, and the other end that stretches out adsorbs on other wadding groups or micelle again, forms bigger, more closely knit wadding group, plays very good bridging flocculation promptly.

In a word, the utility model discloses the technology drops into multiple chemical agent and plays respective effect and comprehensive cross-linking effect simultaneously, has both appeared organic matter (COD), heavy metal ion and other pollutants, the colourity of dissolved state, has coagulated suspended solid impurity again. Through the utility model discloses go out water after purification technology handles, pH is neutral, and Suspended Solid (SS) content is less than 3 mg/liter, and the turbidity is less than 1 NTU, and the colourity is less than 25 times, and hardness is suitable, and quality of water is limpid and transparent, and organic pollutant concentration greatly reduced, CODcr <100 mg/liter can send back to and use in the workshop production process completely, and no longer outer row has both treated dirt, saves water again.

The following is the scientific research experiment carried out by the system and the method of the utility model:

1. experiment for deep purification and reuse of middle stage sewage of reed pulping and papermaking in Yuanjiang paper industry of Taiglin paper group of Hunan province. In the Yuan river of Hunan, the inventor utilizes the utility model discloses a high concentration deep purification and recycling system has carried out deep purification to reed pulping papermaking middle section sewage of Yuan river paper industry high concentration of Taigeling paper group of Hunan, and the quality of water data before and after the sewage treatment has been tested to Yiyang city environmental monitoring station. The following are water quality test data before and after the deep purification technical system is started to operate and process the paper-making pulping middle section sewage purification:

Figure DEST_PATH_896267DEST_PATH_IMAGE001

therefore, after the high-concentration reed pulping middle section sewage is treated by the high-concentration sewage deep purification and recycling system, the effluent quality is as follows: CODcr: 108 mg/l, BOD 5: 27.3 mg/l, turbidity less than 3 NTU, colour <25 fold, pH 7. The water quality index can reliably reach the national discharge standard, and more importantly, the effluent can be completely reused for washing the coarse pulp for papermaking in the factory without being discharged outside the factory! The total water consumption of the papermaking production process is greatly reduced, and the economic and technical indexes reach the world leading level.

2. High-concentration wheat straw paper-making pulping middle-stage sewage deep purification test in Linqing silver river paper industry of Shandong province.

At the critical clear silver river paper industry scene, through the utility model discloses a system has carried out deep purification treatment technical test to wheat straw papermaking pulping middle section sewage, through the comparison of water sample around handling, goes out water quality of water index and has reached national emission standard very reliably, and the suspended solid SS of purifying back play water is <3 mg/liter, and the turbidity is less than 3 NTU, and the colourity is <25 times, and CODcr is <100 mg/liter, PH7, and quality of water is limpid and transparent.

More importantly, the effluent can be completely reused for washing the wheat straw papermaking rough pulp without discharging to the outside of the plant! Greatly reduces the total water consumption of the paper-making production process, and fundamentally solves the problem of pollution of middle-stage sewage of high-concentration wheat straw paper-making pulping.

3. The high-concentration pulping sewage deep purification experiment is carried out in ADM cotton seed paper mill in Tennessee, USA.

The utility model discloses a high concentration sewage deep purification system does the deep purification technical test to cotton seed papermaking slurrying sewage at the scene of American ADM company.

The data of the water quality test of inlet water and outlet water of the high-concentration sewage deep purification technical system in the successful start-up operation test of the American ADM cotton seed paper-making pulp mill are as follows:

Figure DEST_PATH_16670DEST_PATH_IMAGE002

after the high-concentration sewage deep purification and recycling system is successfully started and operated in the American ADM cotton seed paper-making pulp mill, the system is proved to be capable of efficiently removing pollutants such as BOD, chroma, suspended matters and the like in the high-concentration cotton seed paper-making pulp sewage: BOD5 decreased from 175mg/l to 55.9 mg/l; the chroma is reduced to below 20 times from extremely high chroma; reducing suspended substance from 90mg/l to 0mg/l, and effluent turbidity: 1.5NTU, limpidity and transparency, pH7, the effluent completely meets the water requirement of the process of regenerating and recycling the raw pulp, more than 80 percent of pulping sewage is recycled, the huge amount of fresh industrial water is saved for enterprises, and simultaneously, the enterprises also save huge sewage discharge cost, thereby having very considerable economic benefit.

4. The purification experiment of the high-concentration oil field sewage is carried out in the Daqing oil field in China.

The detection results of the Daqing oil field design institute detection room on the water quality of inlet water and outlet water are as follows:

Figure DEST_PATH_61986DEST_PATH_IMAGE004

and (3) displaying a test report: the outlet water after the high-concentration sewage deep purification system is purified reaches the high-grade standard of oil well reinjection water.

5. The purification test of the sewage produced by the high-concentration polymer oil displacement oil field is successfully carried out in the Liaohe oil field in China. In the last stage of oil field exploitation, only high-viscosity reinjection water containing high polymers can be reinjected to improve the oil production, and the produced sewage becomes viscous oily sewage and is extremely difficult to purify.

6. Utilize the utility model discloses a system handles textile industry chemical fabric dyeing and finishing sewage.

Through the water quality detection of inlet and outlet water, the outlet water completely meets the requirements of regeneration and reuse, and the detection results are as follows:

Figure DEST_PATH_660458DEST_PATH_IMAGE005

7. utilize the utility model discloses a system is to the experiment of the processing of four Sichuan weir colliery gallery sewage.

By detection, the detected data are as follows:

Figure DEST_PATH_943672DEST_PATH_IMAGE006

Figure DEST_PATH_973989DEST_PATH_IMAGE007

directly making coal mine tunnel sewage of the river weir in Sichuan into miner domestic drinking water, and fully analyzing and testing the effluent quality before and after purification

Figure DEST_PATH_709864DEST_PATH_IMAGE008

8. Utilize the utility model discloses a system is to the treatment experiment of a certain navy military base domestic sewage of California USA, and it is used for vegetation greening watering to go out water to recycle after purifying.

The water quality test results are as follows:

Figure DEST_PATH_174344DEST_PATH_IMAGE009

9. utilize the utility model discloses a deep purification technology system can regard as the reuse of urban miscellaneous water to Taibei city urban domestic sewage's of Taiwan experiment, play water. The data tested are as follows:

Figure DEST_PATH_312064DEST_PATH_IMAGE010

10. utilize the system of the utility model to the experiment of the treatment of the urban domestic sewage of ATHENS of America, the treated effluent can be used as the reuse of the urban greening drip irrigation water.

The test results were as follows:

Figure DEST_PATH_774269DEST_PATH_IMAGE011

as can be seen from the experimental results, the phosphorus content: the content of BOD-5 is reduced from 2.72mg/l to below 0.05mg/l and from 247mg/l to 59.9 mg/l.

11. Utilize the utility model discloses a system with Zhejiang province Taizhou greenling city through city river surge sewage purification becomes the experiment of paper mill industrial water, Zhejiang greenling area fresh water resource lacks very, can't satisfy some newly-built paper mill 8000 cubic meters/day water consumption demand, hopes will just near city river surge sewage and make paper mill industrial water.

The system of the utility model discloses that disease prevention control center in Wenling City of Zhejiang province does according to the standard of drinking water

Figure DEST_PATH_246708DEST_PATH_IMAGE012

Claims

1. The high-concentration sewage deep purification and recycling system comprises a deep purification recycling tank, wherein the deep purification recycling tank comprises a main tank body, an ascending mixer, a purifier, a collector and a sludge deposition area; the ascending mixer is arranged in the lower end of the main tank body, the lower end of the ascending mixer is provided with a water inlet, and a mixing area is arranged in the ascending mixer; a sludge deposition area is arranged between the main tank body and the rising mixer; the purifier is arranged at the upper end of the rising mixer, a purifying area communicated with the mixing area is arranged in the purifier, the collector is arranged in the mixing area and the purifying area, a collecting area is arranged in the collector, and the collecting area is communicated with the sludge deposition area; forming a suspended mud zone region between the collector and the clarifier; the method is characterized in that: the ascending flow velocity of the suspended mud layer area is less than that of a mixing area outside the periphery of the collector, and the ascending flow velocity of a purification area above the collector is less than that of the suspended mud layer area; the top of the purifier is provided with a plastic filter bead layer, a bypass return pipeline is arranged between the main tank body and the purifier, the lower end of the bypass return pipeline is communicated with the sludge deposition area, and the upper end of the bypass return pipeline is communicated with the middle part of the plastic filter bead layer in the vertical direction; the plastic filtering bead layer is internally provided with a branch-shaped pipe communicated with the bypass return pipeline, and the branch-shaped pipe is provided with more than four branch-shaped pipe interfaces respectively communicated with the corresponding bypass return pipelines; the pressure at the interface of the branch pipe is less than the pressure on the upper surface of the suspended mud layer area.

2. The high-concentration sewage deep purification and reuse system according to claim 1, characterized in that: the water inlet is connected with a mixed flow pipe which is tangentially connected with the rising mixer.

3. The high-concentration sewage deep purification and reuse system according to claim 1, characterized in that: the water pump is characterized by further comprising a water pump, the water outlet end of the water pump is connected with a bent pipe, the water outlet end of the bent pipe is connected with a ceramic ball tank, a ceramic ball is arranged in the ceramic ball tank, a guide pipe is connected between the upper end of the ceramic ball tank and the mixed flow pipe, the water inlet end of the water pump is connected with a water inlet pipe, and a medicament container is connected onto the water inlet pipe.

4. The high-concentration sewage deep purification and reuse system according to claim 3, characterized in that: the medicament containers include a first medicament container, a second medicament container, a third medicament container, a fourth medicament container, and a fifth medicament container.

5. The high-concentration sewage deep purification and reuse system according to claim 1, characterized in that: the plastic filtering bead layer is a foam plastic bead layer formed by foam plastic beads.

6. The high-concentration sewage deep purification and reuse system according to claim 1, characterized in that: the branched pipe joints are uniformly distributed in the circumferential direction.

7. The high-concentration sewage deep purification and reuse system according to claim 1, characterized in that: the upper end of the plastic filtering bead layer is provided with a nylon filter head filtering device for preventing the foam plastic beads from losing.