KR20000009525A - General waste water treatment system - Google Patents

Abstract

PURPOSE: A system for treating general waster water by incorporating several treatment processes of a reacting tank, a coagulating stirring tank and a coagulating activating tank into one process of an air solution tank is provided which can treat much waste water in a very short time and minimize an installation area. CONSTITUTION: In the waste water treatment system for separating sludge through a pressurized flotation device(14) by supplying waste water stored in a waste water storing tank(10) to a pressure tank(20), solving waste water under high pressure by using a connected air compressure(15), and pouring chemicals such as a reacting agent,a coagulating agent and a coagulant aid etc., the system comprises the 1st purification water storing tank(18) for storing water removed sludge through the pressurized flotation device(14), a purified tank(24) for dilution, connected to a micro bag filter(19), a carbon filter(20), a micro filter(21), and a reverse osmosis film, and a final treated purified water storing tank(27). Raw waste water is compressed at pressure of 4-8 kg/cm¬3 in a pressure tank(12) and waste water passed through pressure tank(12) is supplied to the pressurized flotation device(14) along a supply line(L) in which a reacting agent(NaOH), a coagulant(Alum) and a coagulant aid(POLYMER) are poured to mix chemicals with waste water. Chemicals stored in a chemical tank(23) is supplied to auxiliary pressure tank(13) by a circulating pump and mixed with waste water, a rising speed of floating material is controlled by a specific gravity and a size. The floating rate of floating material is 1-2 m/min and it takes 1-5 min to treat raw waste water in the pressurized flotation device(14).

Description

General wastewater treatment system

The present invention relates to a general wastewater treatment system, and more particularly, in the treatment of wastewater, it is possible to quickly treat a large amount of wastewater and does not require a reservoir for storing wastewater after each multi-step process. The present invention relates to a general wastewater treatment system which is treated in a pressurized tank, thereby making the system maintenance cost low.

In the conventional case, the wastewater treatment system, as shown in FIG. 3, flows the wastewater into the reaction tank, the coagulation stirring tank, and the coagulation activating tank sequentially, respectively, and reactants (NaOH), coagulant (ALUM), and coagulant aid (Polymer), respectively. Chemicals, etc., which flows into the pressurized tank, is dissolved in water by air and pump pressure, and supplied to the flotation tank in a flocculated state by the pressure, and the flotation tank removes the various sludges that float on the water surface. The system consisted of a system for purifying wastewater.

However, such a conventional technology is occupied a large area of the size and capacity by each storage tank, there is a problem that does not efficiently treat a large amount of waste water.

Therefore, the present invention has been devised in view of the above-mentioned problems of the prior art, and enables a large amount of wastewater to be purified in a short time, and does not require agglomeration and a reaction tank compared to the prior art, and also requires a large amount of chemicals. It is an object of the present invention to provide a general wastewater treatment system which can simplify the installation area of the injection and oversize facilities, and shorten the residence time of the wastewater, thereby enabling a rapid response to a large change in water quality.

1 is a block diagram of a wastewater treatment system of the present invention

2 is a process chart for the wastewater treatment system of the present invention.

3 is a block diagram of a wastewater treatment system in the prior art

(Explanation of symbols for the main parts of the drawing)

10 ..., wastewater reservoir 11 ..., wastewater supply pump 12 ..., pressurized tank

13 ..., auxiliary tank 14 ..., pressurized floater 15 ..., air compressor

16 ..., sludge separator 17 ..., sludge reservoir 18 ..., primary septic tank

19 ..., Microbag Filter 20 ..., Carbon Filter 21 ..., Micro Filter

22 ..., reverse osmosis membrane 23 ..., chemical tank 24 ..., dilution water purification tank

25 ..., chemical injection pump 26 ..., treated water reservoir 27 ..., final purified water reservoir

28 ..., dehydrator

Hereinafter, with reference to the accompanying drawings will be described in detail the technical configuration and effect for achieving the object of the present invention.

1 is a system configuration diagram of the present invention, reference numeral 10 is a wastewater storage tank which is stored in a predetermined amount through the wastewater inlet pipe, and 11 is a wastewater supply pump for drawing up the wastewater stored in the wastewater storage tank by pumping and supplying it to the pressure tank. 12 is a pressurized tank for directly pressurizing the supplied raw wastewater, 13 is a pressurized auxiliary tank for treating wastewater that cannot be treated in the pressurized tank, and 14 is injected with wastewater, chemicals and dissolved air by high pressure. Pressurized injuries that cause sludge to float to the surface,

15 is an air compressor that compresses air and supplies it to a pressurized tank to inject compressed air into the wastewater to dissolve the air in the wastewater. 16 is a sludge separator that first filters sludge from the wastewater storage tank, and 17 is a pressurized flotation. Sludge tank to store the sludge discharged through the machine.

In addition, 18 is a primary purified water storage tank for storing the purified water primary through the pressurization, 19 is a micro bag filter 20 is a carbon filter, 21 is a micro-filter 22 is a reverse osmosis membrane.

In addition, 23 is a chemical tank for storing chemicals such as ALUM, agglomerate (NaOH), and coagulation aid (polymer), 24 is a tank for storing purified water for dilution, and 25 is a circulation pump 26 for all processes. A treatment water storage tank in one state, 27 refers to a purification water tank that stores purified water in a state where the final treatment process is completed.

Referring to the operation and effect of the present invention configured as described above based on the preferred embodiment are as follows.

As shown in FIG. 1, the wastewater flowing through the wastewater inlet pipe is stored in the wastewater storage tank 10, and the wastewater stored more than a predetermined time is supplied to the pressurized tank 12 by the operation of the wastewater supply pump 11. The sludge contained in the waste water is filtered through the sludge separator, and the sludge is sent to the sludge storage tank, and the raw waste water in which the sludge is removed is supplied to the pressurized tank.

In the pressurized tank 12, the raw wastewater is directly pressurized (4 to 8 kg / cm 2), while the high pressure air supplied from the air compressor 21 is supplied, which dissolves in the wastewater and causes the sludge to be aggregated under pressure.

At this time, the wastewater passing through the pressure tank 12 is supplied to the pressure flotation 14 along the supply line (L), and the reactant (NaOH) for diluting or forcibly separating the wastewater on the supply line (L). Alum and POLYMER are added.

In other words, the medicine tank is filled with each medicine, and the operation is made to the stirring operation.

Subsequently, the chemicals stored in the chemical tank 23 are supplied to the auxiliary pressurization tank 13 by pumping of the circulation pump, and the auxiliary pressurization tank 13 is stirred at a constant pressure, and the chemicals are supplied along the wastewater supply line L. While supplied, it is mixed with the waste water to cause a reaction, which is introduced into the auxiliary pressurized tank 13, mixed with and reacted with water, and recirculated 60% of the treated water in the flotation tank, thereby increasing the pressure flotation (14). ) To replenish air or adjust the rate of rise of the float according to the specific gravity or size of the flocculated float.

Subsequently, when the wastewater compressed to a constant pressure is supplied to the pressure flotation 14, the high-pressure wastewater is supplied while changing to natural pressure, and is bound to sludge by chemicals and injected into the fluid supply line mixer at the inlet to pressurized flotation Agglomeration is achieved in (14).

At this time, the flocculated sludge or the like floats on the water surface of the pressurized flotation machine 14. According to the experiment, the float floating speed in the pressurized flotation machine 14 takes 1m-2m / min, and the original wastewater treatment time is 1-5. It took about a minute.

On the other hand, by the plotter provided in the upper portion of the pressure floating body 14, sludge is removed, which is stored in the sludge storage tank 17 along the sludge supply line.

In addition, the sludge is removed from the wastewater continuously flowing from the pressurized floater 40, and the remaining waste water is supplied to the water purification tank 18, and after a predetermined time, the micro bag filter 19, the carbon filter 20, Impurities are completely removed while sequentially passing through the micro filter 21. At this time, the water contained in the dilution purified water tank 24 in which the purified water for diluting the first purified wastewater is stored is pumped from the circulation pump 25. While mixing with the first purified water by force, the reverse osmosis membrane is forced through the final purified water treatment.

Subsequently, all the purified water is stored in the settling tank 26, and after a predetermined time is finally contained in the purified water storage tank is discharged according to the purpose.

As described above, the present invention, the waste water treatment effect is superior to the existing method, the maintenance cost is low, no need for separate agglomeration, reaction tank, small area can be installed anywhere, the existing pressure rise It's a new level of invention that's a major improvement over devices.

Claims (1)

In implementing a general wastewater treatment system for treating raw wastewater through a certain path, The wastewater stored in the wastewater storage tank 10 is pumped to the pressurized tank 20 to dissolve the wastewater at a high pressure of the air compressor 15 connected thereto, and injects chemicals such as a reactant, a flocculant and a coagulant aid. In the wastewater treatment system to separate the sludge through the pressurizing unit 14, A primary purified water storage tank 18 in which water in a state of removing sludge is stored through the pressurizing unit 14, Water passing through the reservoir 18 is forced through the reverse osmosis membrane 22, the micro bag filter 19, the carbon filter 20, the micro filter 21, which are connected in series, The dilution purified water tank 24 for supplying dilution purified water is connected thereto, A water treatment tank 27 for storing water that has passed the series of processes, General wastewater treatment system comprising a final purified water reservoir for storing the purified water of the final treatment process is completed.