CN203360169U

CN203360169U - Sewage treatment system

Info

Publication number: CN203360169U
Application number: CN 201320363650
Authority: CN
Inventors: 谭秋苹; 蒋明安
Original assignee: SICHUAN HAIPU FLUID TECHNOLOGY Co Ltd
Current assignee: SICHUAN HAIPU FLUID TECHNOLOGY Co Ltd
Priority date: 2013-06-24
Filing date: 2013-06-24
Publication date: 2013-12-25
Anticipated expiration: 2023-06-24

Abstract

The utility model relates to a sewage treatment system which comprises sewage, wherein the sewage is communicated with a grating, a lift pump, a sedimentation tank, a reaction tank and a secondary sedimentation tank in sequence through pipelines; sewage in the secondary sedimentation tank discharges out or recycles clear water through a pipeline; sludge produced by the sedimentation tank and the secondary sedimentation tank is conveyed to a sludge treatment device for treatment. The sewage treatment system has a simple structure; sewage treatment of the whole system is performed in a closed environment; malodor of sewage cannot volatilize or diffuse in the treatment process; the influence on the surrounding environment in the sewage treatment process is improved.

Description

A kind of Sewage treatment systems

Technical field

The utility model relates to a kind of Sewage treatment systems.

Background technology

China is the country of a lack of water, and water resources ownership per capita is only world occupancy volume per person's 1/4.And the skewness of the water resources of China on space-time and areal distribution, more increased the weight of actual lack of water situation.Therefore China's city water resource is further nervous in the last few years, many cities serious water shortage.Meanwhile, water resource pollution is but day by day serious, and therefore many factories all set up the water treatment plants of oneself, change the present situation of current water scarcity and pollution.Environmental protection problem becomes one of factor of impact and restriction human social development day by day.Along with the sharply increase of industrial development and urban population, a large amount of industry and the unprocessed inflow rivers,lakes and seas of sanitary sewage, be heavily polluted environment and tap water.Therefore, setting up water treatment plants is the effective way that solves water supply problem.

Because the working cost of sewage disposal is huge, long-term, if the working cost of municipal sewage plant can be saved to 1% by intelligentized control, that is also an astronomical figure.

The problem existed in automatic control of sewage treatment at present:

(1) traditional wastewater is processed automatic control system and is required to set up accurate mathematical model, and more mandatory hypothesis are proposed, yet the actual sewage treatment system is owing to having complicacy, non-linear, time variation, uncertainty and imperfection etc., generally can't obtain accurate mathematical model with the actual hypothesis conformed to, there are the problems such as the effluent quality fluctuation is larger in the Water Treatment Automatic Control System that therefore adopts traditional control theory to set up on practical engineering application.

(2) some automatic detection systems that adopt in Water Treatment Automatic Control System, the function of instrument are still far from perfect at present, in reality detects, fall flat, error is very large, therefore rely on these test set judgement sewage disposal situations and implement automatically to control, being difficult to reach the purpose of water quality treatment qualified discharge and save energy.

(3) domestic many Sewage treatment systemss adopt the ORP(redox potential more), the DO(dissolved oxygen) and the pH(potential of hydrogen) value controls effluent quality and aeration rate as controlling parameter, but there are some problems in these methods, as control sewage work nitrated-ORP that denitrification process was used just is difficult to judge, therefore also execution time control of most sewage works that control based on ORP, as the emergent control when controller can't find the ORP unique point, what so just cause many Sewage treatment systemss in fact still to adopt is the whole treating processes of controlling by time variable.

(4) the automatic control of sewage disposal need to be controlled mechanical means such as a large amount of valves, pump, gas blower and suction (scraping) mud machine, agitators, need the switching value of control automatically many, they usually will regularly be opened, stop according to certain hour or logical order, yet there are some problems in the relevant device quality of some enterprises of China at present, work-ing life is shorter, and import equipment is very expensive.

Water treatment plants is in the process of carrying out water treatment, and a lot of programs are all that this will cause the sewage disposal meeting to affect peripheral environment in the situation that opening is carried out, and the diffusion due to sewage volatilization and foul smell simultaneously causes secondary pollution.Simultaneously, in water treatment procedure, often need to add medicament in the pending water bodys such as pending tap water or various industrial discharge water, sanitary sewage, concrete medicament and formula are determined by professional water treatment company, by medicament kind, divide, the conventional water conditioning medicament of industrial circulating cooling water system has inhibiter, Scale inhibitors, dispersion agent, sterilant, coagulating agent, coagulant aids and regulates pH soda acid chemicals dosing plant etc.Kind, the form of the medicament that should be able to propose according to water treatment company as the engineer engaged in water supply and drainage engineering of plant design and add the proper form that concentration is determined medicine machine.If directly in the staying water of opening, add medicament, the mode that adds is to be relatively easy to, as long as by pipeline, medicament is imported to staying water.But, if in the pipeline in sealing and have in the staying water of certain pressure and add medicament, common dosing method is irrealizable.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of Sewage treatment systems, this system architecture is simple, the reaction tank that sewage is processed is the reaction vessel of sealing, has also designed a kind of in sealing and having a medicine system that adds medicament in the closed container of certain pressure simultaneously.

The utility model solves the problems of the technologies described above adopted technical scheme: a kind of Sewage treatment systems, comprise sewage, sewage is connected with grid, lift pump, settling tank, reaction tank, secondary sedimentation basins successively by pipeline, sewage in secondary sedimentation basins effluxes clear water or reuse by pipeline, and the mud that settling tank, secondary sedimentation basins precipitation produce is delivered to the sludge treatment equipment place and is processed.

Further, described reaction tank is the reaction vessel of sealing.

Simultaneously, also comprise to adding the chemicals dosing plant of medicament in reaction vessel.

Described chemicals dosing plant comprises control valve behind control valve before medicament storage tank, volume pump, buffer memory chamber, buffer memory chamber, medicament buffer memory chamber, the medicament storage tank by pipeline successively with volume pump, buffer memory chamber before after control valve, medicament buffer memory chamber, buffer memory chamber control valve connect, behind the buffer memory chamber, control valve is connected by pipeline and the pipeline that needs dosing.

This programme is by arranging a medicament buffer memory chamber, be respectively equipped with control valve on the pipeline of front-end and back-end, medicament buffer memory chamber, control valve first open the buffer memory chamber when adding medicament before, close control valve behind the buffer memory chamber, by volume pump, medicament is joined in medicament buffer memory chamber, then close control valve before the buffer memory chamber, open control valve behind the buffer memory chamber, medicament in medicament buffer memory chamber can enter reaction tank, with the sewage in reaction tank, mixes.This scheme preferably resolves to adding the problem of medicament in the closed reaction vessel with pressure, if there is no medicament buffer memory chamber, control valve is not set before and after medicament buffer memory chamber, and directly by pump to the words of adding medicament in closed conduct, need the power of pump very big, the pressure of the medicament that at least will pump will exceed the hydraulic pressure in closed container, medicament just can enter in the closed conduct with pressure, like this, there is the large problem of working load of pump, and, just in case to pump the pressure of medicament inadequate, also may cause the adverse current of sewage in closed container.

Particularly, also comprise unidirectional water flowing out structure, unidirectional water flowing out structure is arranged on before volume pump and buffer memory chamber on the pipeline between control valve, control current can only be from volume pump flows to the buffer memory chamber control valve.This structure is in order to prevent the medicament adverse current, accurately to measure to medicament.

Also comprise pressure switch, pressure switch is arranged on the pipeline between volume pump and unidirectional water flowing out structure.Can, according to the pressure-bearing safety requirements of pipeline and equipment, when hydraulic pressure surpasses set(ting)value in pipeline being detected, close volume pump with the hydrodynamicpressure in control tube.Further, arrange on the pipeline of pressure switch pressure relief can also be set.

Described medicament buffer memory is provided with measuring unit of liquid level in chamber.Measure the number of medicament buffer memory chamber inner fluid by measuring unit of liquid level, so that control preferably the open and close state of each valve.

Described medicament buffer memory chamber is provided with the emptying pipeline of connecting with the cavity top, and emptying pipeline is provided with the emptying control valve in buffer memory chamber.When volume pump joins medicament buffer memory chamber by medicament, can open the emptying control valve in buffer memory chamber and carry out air defense, prevent that medicament buffer memory cavity pressure from increasing.

Described medicament buffer memory chamber is provided with the drain line of connecting with cavity bottom, and drain line is provided with buffer memory chamber discharge opeing control valve.Control valve after opening the buffer memory chamber, medicament in medicament buffer memory chamber enters in the pipeline of staying water with after staying water mixes, staying water also can enter medicament buffer memory chamber simultaneously, on carrying out once during dosing, need to first close control valve behind control valve before the buffer memory chamber, buffer memory chamber, open buffer memory chamber discharge opeing control valve, the last staying water retained in medicament buffer memory chamber is discharged, then by operation, carry out feeding operations next time.

The container that described settling tank, secondary sedimentation basins are sealing

The beneficial effects of the utility model are:

1, the utility model is simple in structure, and the sewage disposal of whole system is all carried out under the environment of sealing, and in treating processes, the foul smell of sewage can not volatilize or spread, and has improved in the sewage treatment process impact on surrounding enviroment.

2, the utility model has also designed a kind ofly in sealing and having the medicine system that adds medicament in the closed container of certain pressure simultaneously, can preferably resolve to the problem of adding medicament in the closed container with pressure.

The accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of the utility model chemicals dosing plant.

Component title corresponding to number in the figure is: 1-medicament storage tank, 2-volume pump, 3-pressure switch, the unidirectional water flowing out structure of 4-, control valve before 5-buffer memory chamber, 6-measuring unit of liquid level, the emptying control valve in 7-buffer memory chamber, control valve behind 9-buffer memory chamber, 10-medicament buffer memory chamber, 11-buffer memory chamber discharge opeing control valve.

Embodiment

As Fig. 1, shown in Fig. 2, the working process of the Sewage treatment systems of the present embodiment is: the sewage at first produced first concentrates in sewage lagoon, the sewage outlet place of sewage lagoon arranges grid, the sewage flowed out is carried out to prefiltration, large suspended substance is held back so that subsequent disposal, if do not design sewage lagoon, but waste pipe institute sewer directly enters this treatment system, can in plumbing drain, directly design the grid filtered, through grid, except the sewage after filtering, by lift pump, sewage transport to settling tank is precipitated for the first time, oettIed sewage enters reaction tank for the first time, sewage is carried out to reaction treatment, to eliminate the organism in sewage, kill pathogenic agent etc., in reaction process, need to add the medicament or the additive that are equipped with by specialized company, to improve the efficiency of sewage disposal, entering secondary sedimentation basins through reacted sewage precipitates for the second time, water after precipitation can reach emission standard, by pipeline, clear water is effluxed or reuse, settling tank, the mud of secondary sedimentation basins is delivered to the sludge treatment equipment place and is processed.

In the present embodiment, the container that settling tank, secondary sedimentation basins are sealing.Reaction tank is also the reaction vessel of sealing, it can be specifically reactor, the equipment such as tank, this Sewage treatment systems relatively is applicable to the sewage source that adopts the anaerobism mode to process, in this system, also have to adding the chemicals dosing plant of medicament in reaction vessel, this device comprises medicament storage tank 1, volume pump 2, before the buffer memory chamber, control valve 5, behind the buffer memory chamber, control valve 9, medicament buffer memory chamber 10, unidirectional water flowing out structure 4, medicament storage tank 1 by pipeline successively with volume pump 2, unidirectional water flowing out structure 4, before the buffer memory chamber, control valve 5, medicament buffer memory chamber 10, behind the buffer memory chamber, control valve 9 is connected, behind the buffer memory chamber, control valve 9 is connected by pipeline and reaction vessel.

Further, be provided with pressure switch 3 on the pipeline between volume pump 2 and unidirectional water flowing out structure 4.Be provided with measuring unit of liquid level 6 in medicament buffer memory chamber 10, medicament buffer memory chamber 10 is provided with the emptying pipeline of connecting with the cavity top, emptying pipeline is provided with the emptying control valve 7 in buffer memory chamber, simultaneously, medicament buffer memory chamber 10 is provided with the drain line of connecting with cavity bottom, and drain line is provided with buffer memory chamber discharge opeing control valve 11.Independent unlatching by controlling the emptying control valve 7 in buffer memory chamber, buffer memory chamber discharge opeing control valve 11 or close, can solve the function of the emptying and discharge opeing in medicament buffer memory chamber 10.Open the emptying control valve 7 in buffer memory chamber, buffer memory chamber discharge opeing control valve 11 simultaneously, the interface of buffer memory chamber discharge opeing control valve 11 ends is connected with rinsing water route, can also form the back-flushing structure that medicament buffer memory chamber 10 is cleaned.

As mentioned above, can implement preferably the utility model.

Claims

1. a Sewage treatment systems, it is characterized in that, comprise sewage, sewage is connected with grid, lift pump, settling tank, reaction tank, secondary sedimentation basins successively by pipeline, sewage in secondary sedimentation basins effluxes clear water or reuse by pipeline, and the mud that settling tank, secondary sedimentation basins precipitation produce is delivered to the sludge treatment equipment place and is processed.

2. a kind of Sewage treatment systems according to claim 1, is characterized in that, described reaction tank is the reaction vessel of sealing.

3. a kind of Sewage treatment systems according to claim 2, is characterized in that, also comprises to adding the chemicals dosing plant of medicament in reaction vessel.

4. a kind of Sewage treatment systems according to claim 3, it is characterized in that, described chemicals dosing plant comprises control valve (9) behind control valve (5) before medicament storage tank (1), volume pump (2), buffer memory chamber, buffer memory chamber, medicament buffer memory chamber (10), medicament storage tank (1) by pipeline successively with volume pump (2), buffer memory chamber before after control valve (5), medicament buffer memory chamber (10), buffer memory chamber control valve (9) connect, control valve behind the buffer memory chamber (9) is by pipeline and the pipeline connection that needs dosing.

5. a kind of Sewage treatment systems according to claim 4, it is characterized in that, also comprise unidirectional water flowing out structure (4), unidirectional water flowing out structure (4) is arranged on before volume pump (2) and buffer memory chamber on the pipeline between control valve (5), control current can only be from volume pump (2) flow to the buffer memory chamber control valve (5).

6. a kind of Sewage treatment systems according to claim 5, is characterized in that, also comprises pressure switch (3), and pressure switch (3) is arranged on the pipeline between volume pump (2) and unidirectional water flowing out structure (4).

7. according to the described a kind of Sewage treatment systems of claim 4 to 6 any one, it is characterized in that, be provided with measuring unit of liquid level (6) in described medicament buffer memory chamber (10).

8. according to the described a kind of Sewage treatment systems of claim 4 to 6 any one, it is characterized in that, described medicament buffer memory chamber (10) is provided with the emptying pipeline of connecting with the cavity top, and emptying pipeline is provided with the emptying control valve in buffer memory chamber (7).

9. according to the described a kind of Sewage treatment systems of claim 4 to 6 any one, it is characterized in that, described medicament buffer memory chamber (10) is provided with the drain line of connecting with cavity bottom, and drain line is provided with buffer memory chamber discharge opeing control valve (11).

10. a kind of Sewage treatment systems according to claim 1, is characterized in that, the container that described settling tank, secondary sedimentation basins are sealing.