CN109734259B - Environment-friendly distributed sewage treatment system and method - Google Patents
Environment-friendly distributed sewage treatment system and method Download PDFInfo
- Publication number
- CN109734259B CN109734259B CN201910181798.7A CN201910181798A CN109734259B CN 109734259 B CN109734259 B CN 109734259B CN 201910181798 A CN201910181798 A CN 201910181798A CN 109734259 B CN109734259 B CN 109734259B
- Authority
- CN
- China
- Prior art keywords
- tank
- electromagnetic valve
- chamber
- sedimentation
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Physical Water Treatments (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an environment-friendly distributed sewage treatment system and a method, wherein the system comprises a wastewater collection tank, a mechanical slag removal grid, a grit chamber, an air floatation tank, an intermediate storage tank, an aeration biological filter tank, a sedimentation tank, a second air floatation tank and a monitoring tank; in the automatic control process, the controller receives the transmittance value, the liquid level value, the flow value, the chemical oxygen demand and the biological oxygen demand which are uploaded by each sensor, and the controller analyzes and controls the automatic feeder and the electromagnetic valve to work according to each data. The invention adjusts the flow direction of the sewage through the quality and the storage amount of the wastewater in each procedure, so that the sewage can be rapidly and completely treated, and the biological aerated filter can be in a high-efficiency working state for a long time; still detect through the real-time luminousness to sewage to the volume of the subsidence agent in the flocculation chamber and the sedimentation tank is added in the matching according to the real-time luminousness of sewage, and through control automatic material conveying machine automatic material conveying, very swift convenient.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to an environment-friendly distributed sewage treatment system and method.
Background
Along with the development of modern industry, people's standard of living has also obtained great improvement, but when the standard of living improves, the industry that develops rapidly has also brought the pollution, in order to improve the utilization ratio of water resource, protect the water resource, people set up the sewage treatment system, handle industrial sewage and domestic sewage, in the prior art, sewage treatment is mainly through centralized processing, just with the sewage drainage of each place to sewage treatment plant, and then carry out centralized processing to sewage through sewage treatment plant, this kind of method can save a large amount of labours and construction cost in the area that the sewage source is concentrated, but in the place that the sewage source distributes sparsely, set up the sewage drainage network and carry out centralized processing to sewage, can promote the cost greatly, and at this moment just need distributed sewage treatment system.
The distributed sewage treatment system is used for treating sewage discharged by local areas or buildings on site and then discharging the treated water, a sewage discharge pipeline network is not required to be established, buildings with no sewage treatment transportation pipelines laid around, such as toilets, hotels and the like in scenic spots, sewage treatment in small ranges or sewage treatment in special industries are commonly used, but the distributed sewage treatment in the prior art cannot be quickly and timely treated due to limited space when the flow is large, manual assistance is required in the treatment process, and the distributed sewage treatment system is quite inconvenient.
Disclosure of Invention
The invention aims to provide an environment-friendly distributed sewage treatment system and method.
The technical problems to be solved by the invention are as follows:
1. in the prior art, the distributed sewage treatment system is limited in volume, is greatly influenced by the discharge flow of sewage and the concentration of pollutants contained in the sewage, has poor sewage treatment effect when working under overload, and can influence the normal work of the sewage treatment system due to the accumulation of the pollutants;
2. the existing distributed sewage treatment system runs through manual assistance, and when sewage is treated, substances such as settling agents and disinfectants need to be added manually, so that labor is wasted, and substances such as settling agents and the like with proper amount cannot be added accurately according to the change of the pollutant content of the sewage.
The purpose of the invention can be realized by the following technical scheme:
the environment-friendly distributed sewage treatment system comprises a wastewater collection tank, a mechanical slag removal grid, a grit chamber, a first air floatation tank, an intermediate storage tank, an aeration biological filter, a sedimentation tank, a second air floatation tank and a monitoring tank;
the wastewater collection tank is used for receiving the wastewater to be treated and transmitting the wastewater to the grit chamber;
the grit chamber adopts an aeration type grit chamber and is used for precipitating and collecting grit in sewage, the grit obtained by precipitation is collected through a grit collecting groove arranged at the bottom of the grit chamber, the supernatant of the grit chamber is discharged to a first air floatation tank, and a pipeline between the grit chamber and the first air floatation tank is provided with a solenoid valve R1 and a flowmeter Q1;
the first air flotation tank comprises a flocculation chamber, a first bubble contact chamber and a first separation chamber, wherein a sedimentation agent is added into the flocculation chamber, so that flocs are formed in sewage, the flocs are adhered and captured by microbubbles generated by the bubble contact chamber, pollutants generated by sewage treatment in the first air flotation tank are discharged by a residue scraping machine of the air flotation tank arranged in the separation chamber, a water outlet of the first air flotation tank is respectively connected with a water inlet of the middle storage tank and a water inlet of the biological aerated filter, a pipeline between the first air flotation tank and the middle storage tank is provided with an electromagnetic valve R2 and a flowmeter Q2, and a pipeline between the first air flotation tank and the biological aerated filter is provided with an electromagnetic valve R11;
the intermediate storage pool is used for temporarily storing the wastewater treated by the first air flotation pool and transmitting the wastewater to the biological aerated filter, and a pipeline between the intermediate storage pool and the biological aerated filter is provided with an electromagnetic valve R3 and a flow meter Q3;
the water outlet of the biological aerated filter is connected with the water inlet of the sedimentation tank, and a solenoid valve R4 and a flow meter Q4 are arranged on a pipeline between the biological aerated filter and the sedimentation tank;
the sedimentation tank is used for further disinfecting the wastewater by adopting a disinfectant and settling solid substances by adopting a sedimentation agent, a water outlet of the sedimentation tank is connected with a water inlet of the monitoring tank and a water inlet of the second air floatation tank, a pipeline between the sedimentation tank and the monitoring tank is provided with an electromagnetic valve R5 and a flowmeter Q5, a filter screen is arranged between the sedimentation tank and the monitoring tank, and a pipeline between the sedimentation tank and the second air floatation tank is provided with an electromagnetic valve R6 and a flowmeter Q6;
the second air floatation tank comprises a second bubble contact chamber and a second separation chamber, and a solenoid valve R7 and a flow meter Q7 are arranged on a pipeline between the second air floatation tank and the monitoring tank;
the monitoring pool is used for temporarily storing the treated wastewater and detecting the content of pollutants in the wastewater, a solenoid valve R8 and a flowmeter Q8 are installed on a pipeline between the monitoring pool and the first air flotation pool, and a solenoid valve R9 and a flowmeter Q9 are installed on a discharge pipeline between the monitoring pool and an external water body;
the sand sedimentation tank, the flocculation chamber, the sedimentation tank and the monitoring tank are all provided with light transmittance detection devices, each light transmittance detection device comprises a transparent square pipe, a light transmittance tester illuminator and a light transmittance tester receiver, each transparent square pipe is a square pipeline made of transparent materials, the light transmittance tester illuminator is fixedly arranged on one surface of each square pipe, the light transmittance tester receiver is arranged on the surface of each square pipe opposite to the light transmittance tester illuminator, one end of each square pipe is communicated with the tank body, and the other end of each square pipe is provided with a solenoid valve R10;
the detection method of the light transmittance detection device comprises the following steps: the controller opens the electromagnetic valve R10 at intervals of set time T1, water in the grit chamber, the flocculation chamber, the sedimentation tank or the monitoring tank flows out along the square pipe, at the moment, the electromagnetic valve R10 is closed, the square pipe is filled with water, the luminometer illuminator and the luminometer receiver are started to obtain a light transmittance value, and the light transmittance value is transmitted to the controller;
liquid level sensors are arranged in the wastewater collection tank, the grit chamber, the first air floatation tank, the intermediate storage tank, the biological aerated filter, the sedimentation tank, the monitoring tank and the second air floatation tank, and the liquid level sensors read liquid level information in the corresponding tanks and transmit the liquid level information to the controller;
automatic feeding machines are arranged in the flocculation chamber and the sedimentation tank, a sedimentation agent is filled in the automatic feeding machines, and a disinfectant is also filled in the automatic feeding machines in the sedimentation tank;
the sedimentation tank and the monitoring tank are both provided with a COD sensor and a BOD sensor, wherein the COD sensor is used for detecting the chemical oxygen demand of water, the BOD sensor is used for detecting the biological oxygen demand of water, and the measured values are transmitted to the controller by the COD sensor and the BOD sensor;
the solenoid valve all is connected with the controller, and the controller still receives real-time transmittance value that luminousness detection device detected, the liquid level value that level sensor detected, the pipeline flow value that the flowmeter detected and the chemical oxygen demand that COD sensor detected and the biological oxygen demand that BOD sensor detected, and the controller carries out the analysis and controls the work of automatic material feeding machine and solenoid valve through each data, the method that the controller carries out the analysis and controls the work of automatic material feeding machine and solenoid valve is:
s1, when the light transmittance detection device in the grit chamber detects that the light transmittance of the water in the grit chamber is smaller than a set value X1 and the liquid level in the flocculation chamber is smaller than a preset lowest liquid level value Y1 allowing sewage to enter, opening an electromagnetic valve R1;
s2, after sewage treatment in the first air flotation tank is finished, if the liquid level in the biological aerated filter is smaller than a preset value Y2, the controller controls an electromagnetic valve R11 to be opened, sewage in the first air flotation tank is discharged to the biological aerated filter, if the liquid level in the biological aerated filter is larger than a preset value Y3, the controller controls an electromagnetic valve R11 to be closed and opens an electromagnetic valve R2, the sewage is discharged to an intermediate storage tank, wherein Y3 is larger than Y2, and if the liquid level in the biological aerated filter is larger than the preset value Y3 and the liquid level value in the intermediate storage tank is larger than a preset value Y4, the electromagnetic valves R1, R2 and R11 are closed;
s3, when the water level in the sedimentation tank is lower than a preset value Y5, the controller controls to open an electromagnetic valve R4, after the sewage is settled in the sedimentation tank, if the value of theta 1/omega 1 in the sedimentation tank is smaller than a preset value L1, the electromagnetic valve R6 is opened, short-chain organic molecules in the water are further discharged through a second air floatation tank, after the treatment is finished, the electromagnetic valve R7 is opened, the water is discharged to a monitoring tank, wherein theta 1 is the biological oxygen demand detected in the sedimentation tank, and omega 1 is the chemical oxygen demand in the sedimentation tank;
when the water level in the sedimentation tank is higher than a preset value Y6, the controller controls to open the electromagnetic valve R6, discharge water to the second air floatation tank, then close the electromagnetic valve R6, open the electromagnetic valve R4 and guide the water in the biological aerated filter to the sedimentation tank;
s4, if the value of theta 2/omega 2 in the monitoring pool is larger than a preset value L1, opening an electromagnetic valve R9 to directly discharge the water in the monitoring pool to the external water body, and when the value of theta 2/omega 2 is smaller than a preset value L1, closing an electromagnetic valve R1 and opening an electromagnetic valve R8 to discharge the water to the first air floatation pool for treatment again, wherein theta 2 is the biological oxygen demand detected in the monitoring pool, and omega 2 is the chemical oxygen demand in the monitoring pool;
s5, controlling the automatic feeder to automatically add P + P1 sedimentation agent into the sedimentation chamber or the flocculation chamber by the controller according to the transmittance value, wherein P1 is a preset value, and simultaneously adding disinfectant into the sedimentation chamber by the controller according to the liquid level value.
The environment-friendly distributed sewage treatment method comprises the following steps:
s1, when the light transmittance detection device in the grit chamber detects that the light transmittance of the water in the grit chamber is smaller than a set value X1 and the liquid level in the flocculation chamber is smaller than a preset lowest liquid level value Y1 allowing sewage to enter, opening an electromagnetic valve R1;
s2, after sewage treatment in the first air flotation tank is finished, if the liquid level in the biological aerated filter is smaller than a preset value Y2, the controller controls an electromagnetic valve R11 to be opened, sewage in the first air flotation tank is discharged to the biological aerated filter, if the liquid level in the biological aerated filter is larger than a preset value Y3, the controller controls an electromagnetic valve R11 to be closed and opens an electromagnetic valve R2, the sewage is discharged to an intermediate storage tank, wherein Y3 is larger than Y2, and if the liquid level in the biological aerated filter is larger than the preset value Y3 and the liquid level value in the intermediate storage tank is larger than a preset value Y4, the electromagnetic valves R1, R2 and R11 are closed;
s3, when the water level in the sedimentation tank is lower than a preset value Y5, the controller controls to open an electromagnetic valve R4, after the sewage is settled in the sedimentation tank, if the value of theta 1/omega 1 in the sedimentation tank is smaller than a preset value L1, the electromagnetic valve R6 is opened, short-chain organic molecules in the water are further discharged through a second air floatation tank, after the treatment is finished, the electromagnetic valve R7 is opened, the water is discharged to a monitoring tank, wherein theta 1 is the biological oxygen demand detected in the sedimentation tank, and omega 1 is the chemical oxygen demand in the sedimentation tank;
when the water level in the sedimentation tank is higher than a preset value Y6, the controller controls to open the electromagnetic valve R6, discharge water to the second air floatation tank, then close the electromagnetic valve R6, open the electromagnetic valve R4 and guide the water in the biological aerated filter to the sedimentation tank;
s4, if the value of theta 2/omega 2 in the monitoring pool is larger than a preset value L1, opening an electromagnetic valve R9 to directly discharge the water in the monitoring pool to the external water body, and when the value of theta 2/omega 2 is smaller than a preset value L1, closing an electromagnetic valve R1 and opening an electromagnetic valve R8 to discharge the water to the first air floatation pool for treatment again, wherein theta 2 is the biological oxygen demand detected in the monitoring pool, and omega 2 is the chemical oxygen demand in the monitoring pool;
s5, controlling the automatic feeder to automatically add P + P1 sedimentation agent into the sedimentation chamber or the flocculation chamber by the controller according to the transmittance value, wherein P1 is a preset value, and simultaneously adding disinfectant into the sedimentation chamber by the controller according to the liquid level value.
As a further scheme of the invention, an airflow stirring device is arranged in the wastewater collection tank, and is used for stirring sewage in the wastewater collection tank, filtering the sewage through a mechanical slag removal grid and pumping the sewage to a grit chamber.
As a further aspect of the invention, the disinfectant is sodium hypochlorite.
The invention has the beneficial effects that:
1. the invention reasonably distributes each procedure, and adjusts the flow direction of the sewage through the quality and the storage amount of the wastewater in each procedure, so that the sewage can be rapidly and completely treated, and the biological aerated filter can be in a high-efficiency working state for a long time;
2. the invention is very fast and convenient by detecting the real-time light transmittance of the sewage, matching the amount of the sedimentation agent added into the flocculation chamber and the sedimentation tank according to the real-time light transmittance of the sewage and controlling the automatic feeding machine to automatically feed.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a schematic view of the structure of a sewage treatment system according to the present invention;
fig. 2 is a schematic structural diagram of a light transmittance detection device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An environment-friendly distributed sewage treatment system is shown in figure 1 and comprises a wastewater collection tank, a mechanical slag removal grid, a grit chamber, a first air floatation tank, an intermediate storage tank, an aeration biological filter, a sedimentation tank, a second air floatation tank and a monitoring tank;
the sewage treatment device comprises a wastewater collection pool, an airflow stirring device, a mechanical slag removal grid, a sand basin and a sewage treatment system, wherein the wastewater collection pool is used for receiving sewage to be treated, the airflow stirring device is arranged in the wastewater collection pool and is used for stirring the sewage in the wastewater collection pool, and suspended garbage in the sewage is filtered by the mechanical slag removal grid and then pumped to the sand basin after being dispersed;
the grit chamber adopts an aeration type grit chamber and is used for precipitating and collecting grit in sewage, the grit obtained by precipitation is collected through a grit collecting groove arranged at the bottom of the grit chamber, the supernatant of the grit chamber is discharged to a first air floatation tank, and a pipeline between the grit chamber and the first air floatation tank is provided with a solenoid valve R1 and a flowmeter Q1;
the first air flotation tank comprises a flocculation chamber, a first bubble contact chamber and a first separation chamber, wherein a sedimentation agent is added into the flocculation chamber, so that floccules are formed in sewage, the floccules are adhered and captured by microbubbles generated by the bubble contact chamber, pollutants generated by sewage treatment in the first air flotation tank are discharged by a residue scraping machine of the air flotation tank arranged in the separation chamber, a water outlet of the first air flotation tank is respectively connected with a water inlet of the middle storage tank and a water inlet of the biological aerated filter, a pipeline between the first air flotation tank and the middle storage tank is provided with an electromagnetic valve R2 and a flowmeter Q2, a pipeline between the first air flotation tank and the biological aerated filter is provided with an electromagnetic valve R11, the first air flotation tank can remove a large amount of fine suspended matters, short-chain organic molecules and colored groups in the sewage, and avoids the rapid accumulation of a sludge layer on the surface of a biological filler layer of the biological aerated filter in the next step, the working efficiency of the biological filler layer is influenced;
the intermediate storage pool is used for temporarily storing the wastewater treated by the first air flotation pool and transmitting the wastewater to the biological aerated filter, so that the flow of the wastewater entering the biological aerated filter can be controlled, and a pipeline between the intermediate storage pool and the biological aerated filter is provided with an electromagnetic valve R3 and a flow meter Q3;
the biological aerated filter is used for carrying out nitrification, denitrification, dephosphorization and removal of harmful substances on sewage, a water outlet of the biological aerated filter is connected with a water inlet of the sedimentation tank, and a pipeline between the biological aerated filter and the sedimentation tank is provided with an electromagnetic valve R4 and a flowmeter Q4;
the sedimentation tank is used for further disinfecting wastewater to be treated and settling solid substances, a disinfectant is adopted for disinfection during disinfection, the disinfectant is sodium hypochlorite, a water outlet of the sedimentation tank is connected with a water inlet of the monitoring tank and a water inlet of the second air floatation tank, a solenoid valve R5 and a flow meter Q5 are installed on a pipeline between the sedimentation tank and the monitoring tank, a filter screen is arranged between the sedimentation tank and the monitoring tank and used for filtering floccules generated in the sedimentation tank, and a solenoid valve R6 and a flow meter Q6 are installed on a pipeline between the sedimentation tank and the second air floatation tank;
the second air floatation tank comprises a second bubble contact chamber and a second separation chamber and is used for further treating the sewage treated by the sedimentation tank, and a pipeline between the second air floatation tank and the monitoring tank is provided with an electromagnetic valve R7 and a flowmeter Q7;
the monitoring pool is used for temporarily storing the wastewater treated by the steps and detecting the content of pollutants in the wastewater, if the treated wastewater in the monitoring pool meets the discharge standard, the wastewater is discharged to an external water body, if the treated wastewater in the monitoring pool does not meet the discharge standard, the wastewater is discharged to the air flotation pool, a pipeline between the monitoring pool and the first air flotation pool is provided with an electromagnetic valve R8 and a flow meter Q8, and a discharge pipeline between the monitoring pool and the external water body is provided with an electromagnetic valve R9 and a flow meter Q9;
as shown in fig. 2, the light transmittance detection device comprises a transparent square tube 31, a light transmittance tester illuminator 32 and a light transmittance tester receiver 33, the transparent square tube 31 is a square pipeline made of a transparent material, the light transmittance tester illuminator 32 is fixedly installed on one surface of the square tube 31, the light transmittance tester receiver 33 is installed on the surface of the square tube 31 opposite to the light transmittance tester illuminator 32, one end of the square tube 31 is communicated with the tank body, and the other end of the square tube 31 is provided with a solenoid valve R10;
the detection method of the light transmittance detection device comprises the following steps: the controller opens the electromagnetic valve R10 at intervals of set time T1, water in the grit chamber, the flocculation chamber, the sedimentation tank or the monitoring tank flows out along the square pipe 31, at the moment, the electromagnetic valve R10 is closed, the square pipe 31 is filled with water, the light transmittance tester illuminator 32 and the light transmittance tester receiver 33 are started to obtain a light transmittance value, and the method can be used for rapidly detecting the light transmittance values of the water in the grit chamber, the flocculation chamber, the sedimentation tank and the monitoring tank and transmitting the light transmittance values to the controller;
liquid level sensors are arranged in the wastewater collection tank, the grit chamber, the first air floatation tank, the intermediate storage tank, the biological aerated filter, the sedimentation tank, the monitoring tank and the second air floatation tank, and the liquid level sensors read liquid level information in the corresponding tanks and transmit the liquid level information to the controller;
automatic feeders are respectively arranged in the flocculation chamber and the sedimentation tank, a sedimentation agent is filled in the automatic feeders, the automatic feeders control the addition of the required amount of sedimentation agent through a controller, and the automatic feeders in the sedimentation tank are also filled with disinfectant;
the sedimentation tank and the monitoring tank are both provided with a COD sensor and a BOD sensor, wherein the COD sensor is used for detecting the chemical oxygen demand of water, the BOD sensor is used for detecting the biological oxygen demand of water, and the measured values are transmitted to the controller by the COD sensor and the BOD sensor;
the solenoid valve all is connected with the controller, and the controller still receives real-time transmittance value that luminousness detection device detected, the liquid level value that level sensor detected, the pipeline flow value that the flowmeter detected and the chemical oxygen demand that COD sensor detected and the biological oxygen demand that BOD sensor detected, and the controller carries out the analysis and controls the work of automatic material feeding machine and solenoid valve through each data, the method that the controller carries out the analysis and controls the work of automatic material feeding machine and solenoid valve is:
s1, when the light transmittance detection device in the grit chamber detects that the light transmittance of the water in the grit chamber is smaller than a set value X1 and the liquid level in the flocculation chamber is smaller than a preset lowest liquid level value Y1 allowing sewage to enter, opening an electromagnetic valve R1;
s2, after the sewage treatment in the first air flotation tank is finished, if the liquid level in the biological aerated filter is smaller than a preset value Y2, the controller controls the electromagnetic valve R11 to be opened, the sewage in the first air flotation tank is discharged to the biological aerated filter, if the liquid level in the biological aerated filter is larger than a preset value Y3, the controller controls the electromagnetic valve R11 to be closed and opens the electromagnetic valve R2, and the sewage is discharged to the middle storage tank, wherein Y3 is larger than Y2, the electromagnetic valve is prevented from being opened and closed frequently, if the liquid level in the biological aerated filter is larger than the preset value Y3 and the liquid level value in the middle storage tank is larger than the preset value Y4, the electromagnetic valves R1, R2 and R11 are closed, and the biological aerated filter is guaranteed to have enough time to fully treat the sewage;
s3, when the water level in the sedimentation tank is lower than a preset value Y5, the controller controls to open an electromagnetic valve R4, after the sewage is settled in the sedimentation tank, if the value of theta 1/omega 1 in the sedimentation tank is smaller than a preset value L1, the electromagnetic valve R6 is opened, short-chain organic molecules in the water are further discharged through a second air floatation tank, after the treatment is finished, the electromagnetic valve R7 is opened, the water is discharged to a monitoring tank, wherein theta 1 is the biological oxygen demand detected in the sedimentation tank, and omega 1 is the chemical oxygen demand in the sedimentation tank;
when the water level in the sedimentation tank is higher than a preset value Y6, the controller controls to open the electromagnetic valve R6, discharge water to the second air floatation tank, then close the electromagnetic valve R6, open the electromagnetic valve R4, guide the water in the biological aerated filter to the sedimentation tank, and enable the biological aerated filter to be in a high-efficiency working state;
s4, if the value of theta 2/omega 2 in the monitoring pool is larger than a preset value L1, opening an electromagnetic valve R9 to directly discharge the water in the monitoring pool to the external water body, and when the value of theta 2/omega 2 is smaller than a preset value L1, closing an electromagnetic valve R1 and opening an electromagnetic valve R8 to discharge the water to the first air floatation pool for treatment again, wherein theta 2 is the biological oxygen demand detected in the monitoring pool, and omega 2 is the chemical oxygen demand in the monitoring pool;
s5, in the processing procedure, the content of suspended solid in the reaction water that the transmittance of water can be more accurate, can obtain the light transmittance value that detects and the functional relation between the volume P of the subsidence agent that needs to add through finite experiment, the controller adds P + P1' S subsidence agent to settling chamber or flocculation chamber automatically according to transmittance numerical control autoloader, P1 is the default, can guarantee that the subsidence agent that adds is excessive, simultaneously because when disinfecting, add disinfectant according to the water yield, consequently there is linear relation between water yield and the disinfectant, consequently the controller can also add disinfectant according to the liquid level value in the sedimentation tank.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (3)
1. The environment-friendly distributed sewage treatment system is characterized by comprising a wastewater collection tank, a mechanical slag removal grid, a grit chamber, a first air floatation tank, an intermediate storage tank, a biological aerated filter, a sedimentation tank, a second air floatation tank and a monitoring tank;
the wastewater collection tank is used for receiving the wastewater to be treated and transmitting the wastewater to the grit chamber;
the grit chamber adopts an aeration type grit chamber and is used for precipitating and collecting grit in sewage, the grit obtained by precipitation is collected through a grit collecting groove arranged at the bottom of the grit chamber, the supernatant of the grit chamber is discharged to a first air floatation tank, and a pipeline between the grit chamber and the first air floatation tank is provided with a solenoid valve R1 and a flowmeter Q1;
the first air flotation tank comprises a flocculation chamber, a first bubble contact chamber and a first separation chamber, wherein a sedimentation agent is added into the flocculation chamber, so that flocs are formed in sewage, the flocs are adhered and captured by microbubbles generated by the bubble contact chamber, pollutants generated by sewage treatment in the first air flotation tank are discharged by a residue scraping machine of the air flotation tank arranged in the separation chamber, a water outlet of the first air flotation tank is respectively connected with a water inlet of the middle storage tank and a water inlet of the biological aerated filter, a pipeline between the first air flotation tank and the middle storage tank is provided with an electromagnetic valve R2 and a flowmeter Q2, and a pipeline between the first air flotation tank and the biological aerated filter is provided with an electromagnetic valve R11;
the intermediate storage pool is used for temporarily storing the wastewater treated by the first air flotation pool and transmitting the wastewater to the biological aerated filter, and a pipeline between the intermediate storage pool and the biological aerated filter is provided with an electromagnetic valve R3 and a flow meter Q3;
the water outlet of the biological aerated filter is connected with the water inlet of the sedimentation tank, and a solenoid valve R4 and a flow meter Q4 are arranged on a pipeline between the biological aerated filter and the sedimentation tank;
the sedimentation tank is used for further disinfecting the wastewater by adopting a disinfectant and settling solid substances by adopting a sedimentation agent, a water outlet of the sedimentation tank is connected with a water inlet of the monitoring tank and a water inlet of the second air floatation tank, a pipeline between the sedimentation tank and the monitoring tank is provided with an electromagnetic valve R5 and a flowmeter Q5, a filter screen is arranged between the sedimentation tank and the monitoring tank, and a pipeline between the sedimentation tank and the second air floatation tank is provided with an electromagnetic valve R6 and a flowmeter Q6;
the second air floatation tank comprises a second bubble contact chamber and a second separation chamber, and a solenoid valve R7 and a flow meter Q7 are arranged on a pipeline between the second air floatation tank and the monitoring tank;
the monitoring pool is used for temporarily storing the treated wastewater and detecting the content of pollutants in the wastewater, a solenoid valve R8 and a flowmeter Q8 are installed on a pipeline between the monitoring pool and the first air flotation pool, and a solenoid valve R9 and a flowmeter Q9 are installed on a discharge pipeline between the monitoring pool and an external water body;
the sand basin, the flocculation chamber, the sedimentation basin and the monitoring basin are all provided with light transmittance detection devices, each light transmittance detection device comprises a transparent square pipe (31), a light transmittance tester illuminator (32) and a light transmittance tester receiver (33), each transparent square pipe (31) is a square pipeline made of transparent materials, one surface of each square pipe (31) is fixedly provided with the light transmittance tester illuminator (32), one surface of each square pipe (31), which is opposite to the light transmittance tester illuminator (32), is provided with the light transmittance tester receiver (33), one end of each square pipe (31) is communicated with the basin body, and the other end of each square pipe (31) is provided with an electromagnetic valve R10;
the detection method of the light transmittance detection device comprises the following steps: the controller opens the electromagnetic valve R10 at set time T1, water in the grit chamber, the flocculation chamber, the sedimentation tank or the monitoring tank flows out along the square pipe (31), at the moment, the electromagnetic valve R10 is closed, the square pipe (31) is filled with water, the luminometer illuminator (32) and the luminometer receiver (33) are started to obtain a luminometer value, and the luminometer value is transmitted to the controller;
liquid level sensors are arranged in the wastewater collection tank, the grit chamber, the first air floatation tank, the intermediate storage tank, the biological aerated filter, the sedimentation tank, the monitoring tank and the second air floatation tank, and the liquid level sensors read liquid level information in the corresponding tanks and transmit the liquid level information to the controller;
automatic feeding machines are arranged in the flocculation chamber and the sedimentation tank, a sedimentation agent is filled in the automatic feeding machines, and a disinfectant is also filled in the automatic feeding machines in the sedimentation tank;
the sedimentation tank and the monitoring tank are both provided with a COD sensor and a BOD sensor, wherein the COD sensor is used for detecting the chemical oxygen demand of water, the BOD sensor is used for detecting the biological oxygen demand of water, and the measured values are transmitted to the controller by the COD sensor and the BOD sensor;
the solenoid valve all is connected with the controller, and the controller still receives real-time transmittance value that luminousness detection device detected, the liquid level value that level sensor detected, the pipeline flow value that the flowmeter detected and the chemical oxygen demand that COD sensor detected and the biological oxygen demand that BOD sensor detected, and the controller carries out the analysis and controls the work of automatic material feeding machine and solenoid valve through each data, the method that the controller carries out the analysis and controls the work of automatic material feeding machine and solenoid valve is:
s1, when the light transmittance detection device in the grit chamber detects that the light transmittance of the water in the grit chamber is smaller than a set value X1 and the liquid level in the flocculation chamber is smaller than a preset lowest liquid level value Y1 allowing sewage to enter, opening an electromagnetic valve R1;
s2, after sewage treatment in the first air flotation tank is finished, if the liquid level in the biological aerated filter is smaller than a preset value Y2, the controller controls an electromagnetic valve R11 to be opened, sewage in the first air flotation tank is discharged to the biological aerated filter, if the liquid level in the biological aerated filter is larger than a preset value Y3, the controller controls an electromagnetic valve R11 to be closed and opens an electromagnetic valve R2, the sewage is discharged to an intermediate storage tank, wherein Y3 is larger than Y2, and if the liquid level in the biological aerated filter is larger than the preset value Y3 and the liquid level value in the intermediate storage tank is larger than a preset value Y4, the electromagnetic valves R1, R2 and R11 are closed;
s3, when the water level in the sedimentation tank is lower than a preset value Y5, the controller controls to open an electromagnetic valve R4, after the sewage is settled in the sedimentation tank, if the value of theta 1/omega 1 in the sedimentation tank is smaller than a preset value L1, the electromagnetic valve R6 is opened, short-chain organic molecules in the water are further discharged through a second air floatation tank, after the treatment is finished, the electromagnetic valve R7 is opened, the water is discharged to a monitoring tank, wherein theta 1 is the biological oxygen demand detected in the sedimentation tank, and omega 1 is the chemical oxygen demand in the sedimentation tank;
when the water level in the sedimentation tank is higher than a preset value Y6, the controller controls to open the electromagnetic valve R6, discharge water to the second air floatation tank, then close the electromagnetic valve R6, open the electromagnetic valve R4 and guide the water in the biological aerated filter to the sedimentation tank;
s4, if the value of theta 2/omega 2 in the monitoring pool is larger than a preset value L1, opening an electromagnetic valve R9 to directly discharge the water in the monitoring pool to the external water body, and when the value of theta 2/omega 2 is smaller than a preset value L1, closing an electromagnetic valve R1 and opening an electromagnetic valve R8 to discharge the water to the first air floatation pool for treatment again, wherein theta 2 is the biological oxygen demand detected in the monitoring pool, and omega 2 is the chemical oxygen demand in the monitoring pool;
s5, controlling the automatic feeder to automatically add P + P1 sedimentation agent into the sedimentation chamber or the flocculation chamber by the controller according to the transmittance value, wherein P1 is a preset value, and simultaneously adding disinfectant into the sedimentation chamber by the controller according to the liquid level value.
2. The environmentally friendly decentralized sewage treatment system according to claim 1, wherein an air flow stirring device is installed in the wastewater collection tank, and the air flow stirring device is used for stirring the wastewater in the wastewater collection tank, filtering the wastewater through a mechanical slag removal grid, and pumping the wastewater to the grit chamber.
3. The environmentally friendly decentralized sewage treatment system of claim 1, wherein the disinfectant is sodium hypochlorite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181798.7A CN109734259B (en) | 2019-03-11 | 2019-03-11 | Environment-friendly distributed sewage treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181798.7A CN109734259B (en) | 2019-03-11 | 2019-03-11 | Environment-friendly distributed sewage treatment system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109734259A CN109734259A (en) | 2019-05-10 |
| CN109734259B true CN109734259B (en) | 2021-09-07 |
Family
ID=66370036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910181798.7A Active CN109734259B (en) | 2019-03-11 | 2019-03-11 | Environment-friendly distributed sewage treatment system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109734259B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023959B (en) * | 2021-04-20 | 2023-05-23 | 西安市天佑净化设备有限责任公司 | Progressive selective wastewater recycling and purifying equipment |
| CN114671547A (en) * | 2022-04-07 | 2022-06-28 | 广东省广业装备制造集团有限公司 | Rural domestic sewage integrated treatment device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318758A (en) * | 2008-05-16 | 2008-12-10 | 北京工业大学 | Air-float and bio-filter combined water treatment process |
| CN102557359A (en) * | 2012-03-01 | 2012-07-11 | 贵州绿色环保设备工程有限责任公司 | Device for treating wastewater during production of pentaerythritol |
| CN106630422A (en) * | 2016-12-21 | 2017-05-10 | 博瑞德（南京）净化技术有限公司 | Wastewater biological treatment device for polyether polyol production |
| CN107673567A (en) * | 2017-11-20 | 2018-02-09 | 东莞理工学院 | Laboratory waste water intelligent processing system and handling process |
-
2019
- 2019-03-11 CN CN201910181798.7A patent/CN109734259B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318758A (en) * | 2008-05-16 | 2008-12-10 | 北京工业大学 | Air-float and bio-filter combined water treatment process |
| CN102557359A (en) * | 2012-03-01 | 2012-07-11 | 贵州绿色环保设备工程有限责任公司 | Device for treating wastewater during production of pentaerythritol |
| CN106630422A (en) * | 2016-12-21 | 2017-05-10 | 博瑞德（南京）净化技术有限公司 | Wastewater biological treatment device for polyether polyol production |
| CN107673567A (en) * | 2017-11-20 | 2018-02-09 | 东莞理工学院 | Laboratory waste water intelligent processing system and handling process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109734259A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109293128A (en) | A kind of Sewage from Ships processing system | |
| CN109626749A (en) | Multifunctional integral sewage processor and its treatment process | |
| CN109734259B (en) | Environment-friendly distributed sewage treatment system and method | |
| CN102633411B (en) | Integrated recycled water treatment device | |
| CN205347131U (en) | Food and beverage treatment of water regeneration system that gives up | |
| CN107721102A (en) | A kind of sewage disposal system | |
| CN217148912U (en) | Sewage treatment equipment | |
| CN217757087U (en) | Sewage treatment pool | |
| CN203741175U (en) | Sewage desalting system | |
| CN108706840A (en) | A kind of laboratory waste water integrated treatment unit | |
| CN213708053U (en) | Inorganic wastewater treatment device | |
| CN213446615U (en) | Ethylene-vinyl acetate copolymer adhesive wastewater treatment device | |
| CN210736490U (en) | Domestic sewage purification device of environmental protection | |
| CN209721869U (en) | A kind of unattended small towns sewage treatment AAO integrated pond | |
| CN209412023U (en) | A kind of water-jet loom advanced waste treatment system | |
| CN208345996U (en) | A kind of sewage-treatment plant | |
| CN207498169U (en) | For the automatic business processing control system of titanium processing pickling sewage | |
| CN2641037Y (en) | Small life sewage treatment plant | |
| CN201296716Y (en) | Full-automatic sanitary sewage processing equipment | |
| CN206014558U (en) | A kind of sewerage integrated device in laboratory | |
| CN205953778U (en) | Integrated treatment of track traffic sewage and recycling system | |
| CN215102660U (en) | SPF-level experimental animal breeding wastewater treatment system | |
| CN208008602U (en) | Version wastewater treatment equipment is rushed in a kind of alkaline development of lithographic plate | |
| CN211521949U (en) | Intelligent control's rubbish transfer station leachate integrated device | |
| CN108002606A (en) | Household garbage-compressing waste water treatment system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210819 Address after: Room 1143-1144, No. 19, courtyard 2, Yuancun West Street, Tianhe District, Guangzhou, Guangdong 510655 Applicant after: GUANGZHOU ZHONGKE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 312513 Zhejiang province Shaoxing city Xinchang County South Township Shi Xi Village Applicant before: XINCHANG COUNTY YILIN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |