CN201990571U

CN201990571U - Garbage leachate treatment system

Info

Publication number: CN201990571U
Application number: CN2010205343698U
Authority: CN
Inventors: 王宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-19
Filing date: 2010-09-19
Publication date: 2011-09-28
Anticipated expiration: 2020-09-19

Abstract

The utility model relates to a garbage leachate treatment system, which comprises the following main process units: pH (hydrogen ion concentration) regulation units, solid-liquid separation units, an electrochemical treatment unit, an electrodialytic treatment unit, a biological treatment unit, a concentrated solution treatment unit and a sludge treatment unit. The typical process flow of the garbage percolate treatment system is as follows: garbage leachate enters a first pH regulation unit, stays for some time, then enters a first solid-liquid separation unit, afterwards enters a second pH regulation unit, and enters the electrochemical treatment unit in succession; effluent of the electrochemical treatment unit enters a second solid-liquid separation unit; clear liquid acquired after solid-liquid separation enters the electrodialytic treatment unit; effluent of a fresh water chamber of the electrodialytic treatment unit enters the biological treatment unit and then enters a third solid-liquid separation unit to be treated; sludge acquired after solid-liquid separation and excess sludge of the biological treatment unit enter the sludge treatment unit; and electrodialytic concentrated solution enters the concentrated solution treatment unit.

Description

A kind of garbage percolation liquid treating system

Technical field:

The utility model relates to a kind of garbage percolation liquid treating system, is used to handle the percolate of consumer waste filling and embedding factory, makes it reach the relevant emission standard of country.

Background technology:

At present, percolate is handled and is still a global difficult problem, does not obtain real solution.Present domestic garbage percolation liquid treating system method is to adopt external technology substantially, and idiographic flow is: percolate-biological treatment-precipitation-filtration-MBR-nanofiltration-reverse osmosis-discharging.

The effluent quality of this technology is up to standard to be no problem, but this technology has a fatal weakness technically, that is exactly that it can only handle 67% water in fact at most, produce the concentrated solution more than 33% simultaneously, this concentrated solution is a kind of supersalinity, high chroma, high ammonia nitrogen, high total nitrogen, the high pollution waste water of higher COD, intractability is higher, and some way is that this concentrated solution is recharged, but along with the continuous accumulation of pollutent, system will finally be paralysed, some way is an evaporative crystallization, but investment and working cost are too big, and is unworkable in the actually operating.Above-mentioned in addition technology exists also that film easily pollutes, obstruction, operational administrative complexity, investment are too big, the too high drawback of working cost, and from practical operation situation, owing to reasons such as film pollutions, obstructions, above-mentioned technology almost is difficult to normally transport.

The utility model content:

In order to overcome the deficiency that exists in the present garbage percolation liquid treating system method, the utility model provides a kind of garbage percolation liquid treating system, and this technology is stable, manage simpler, can really solve the problem of percolate up hill and dale, and reduced investment, working cost is lower.

The technical scheme that its technical problem that solves the utility model adopts is:

This rubbish percolation liquid treating system, mainly by the PH regulon, solid-liquid separation unit, the electrochemical treatment unit, the electrodialysis process unit, biological processing unit, the concentrated solution processing unit, the sludge treatment unit is formed, it is characterized in that: pH regulator unit one links to each other with solid-liquid separation unit one, solid-liquid separation unit one links to each other with pH regulator unit two, pH regulator unit two links to each other with the electrochemical treatment unit, the electrochemical treatment unit links to each other with solid-liquid separation unit two, solid-liquid separation unit two links to each other with the electrodialysis process unit, the electrodialysis process unit links to each other with biological processing unit, biological processing unit links to each other with solid-liquid separation unit three, solid-liquid separation unit one, solid-liquid separation unit two, solid-liquid separation unit three, biological processing unit links to each other with the sludge treatment unit again, the electrodialysis process unit links to each other with the concentrated solution processing unit again, its canonical process is as follows: percolate is transported to pH regulator unit one carries out acidification, humic acid is separated out in the throw out mode, after reaction for some time, enter solid-liquid separation processing unit one and carry out solid-liquid separation, usually adopt precipitation and filter method, most of humic acid in the percolate can be removed like this, clear liquid after the solid-liquid separation is according to pH value situation, can enter pH regulator unit two heightens the pH value, also can directly enter the electrochemical treatment unit, usually adopt electro-flucculation process, percolate after electrochemical treatment, humic acid is removed substantially in the water, the COD value also reduces greatly, heavy metal is removed substantially, and the water outlet after the electrochemical treatment enters solid-liquid separation unit two and carries out solid-liquid separation.Clear liquid enters electrodialysis unit and enters processing, and electrodialysis unit is separated to the concentration compartments with the ammonia nitrogen in the water, other solvability salts substances, and organism and small part salt are stayed freshwater room.Ammonia nitrogen and solvability salts contg are lower in the freshwater room water outlet, ammonia nitrogen and total nitrogen, heavy metal are all up to standard, electrodialytic membranes is because its operating mode is that ion-exchange rather than filtration are held back, so do not exist stop up problem, can not produce the organic concentrated waste water of high density yet, its light chamber water outlet biodegradability improves greatly, be easy to the biological treatment, enter the biological treatment processed in units after water outlet COD, BOD all can be up to standard easily.Handle through solid-liquid separation: SS and portion C OD, BOD are removed again, and all kinds of indexs of water outlet so far all can be up to standard.Electrodialysis unit generally places before the biological processing unit, but to some water quality, as refuse landfill later stage percolate, also can place it in the rear end in the technical process.Also can add a pH regulator unit as required before the biological processing unit.Electrodialysis concentrated solution total amount can reach below 10% of total amount usually.Organic content is very low in the concentrated solution, mainly is inorganic salt, handles fairly simplely, it is sent to the concentrated solution processing unit handles, and can adopt technology such as sun power evaporation.The very high mud of solid content that solid-liquid separation unit, biological processing unit produce enters the sludge treatment unit and handles, and forms dewatered sludge, can burn or landfill.Above technology can make water outlet reach international emission standard fully, and because there is not film contamination and plugging problem, operation can be very stable, safeguard also simple, whole technology is fragile reverse osmosis membrane, nanofiltration membrane owing to do not have expensive, thereby invests and more economize, and working cost is lower.Can solve the difficult problem that percolate is handled well.In addition, the order of each processing unit can be adjusted according to actual water quality situation appropriateness, also can place before the pH regulator unit one as the biological treatment processing unit.Also have,, can establish the pre-treatment facility before this garbage percolation liquid treating system, can connect the advanced treatment facility afterwards, also can between the processing unit of this garbage percolation liquid treating system, appropriateness increase or reduce processing unit according to actual water quality situation.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described further

Fig. 1 is first kind of typical process flow of the present utility model

Fig. 2 is second kind of typical process flow of the present utility model

Fig. 3 is the third typical process flow of the present utility model

Fig. 4 is the 4th a kind of typical process flow of the present utility model

Fig. 5 is the 5th a kind of typical process flow of the present utility model

Among the figure: 1, percolate; 2, the pH regulator unit one; 3, solid-liquid separation unit one; 4, the pH regulator unit two; 5, electrochemical treatment unit; 6, solid-liquid separation unit two; 7, electrodialysis process unit; 8, the pH regulator unit three; 9, biological processing unit; 10, solid-liquid separation unit three; 11, concentrated solution processing unit; 12, sludge treatment unit

Embodiment:

Percolate in Fig. 1 (1) enters pH regulator unit one (2), pH regulator unit one (2), solid-liquid separation unit one (3), pH regulator unit two (4), electrochemical treatment unit (5), solid-liquid separation unit two (6), electrodialysis process unit (7), PH regulon three (8), biological processing unit (9), solid-liquid separation unit three (10) orders link to each other, solid-liquid separation unit one (3), solid-liquid separation unit two (6), the mud discharging mouth of solid-liquid separation unit three (10) and biological processing unit (9) links to each other with sludge treatment unit (11), and the concentrated solution outlet of electrodialysis process unit (7) links to each other with concentrated solution processing unit (12).In Fig. 2, percolate (1) enters pH regulator unit one (2), PH regulon one (2), solid-liquid separation unit one (3), pH regulator unit two (4), electrochemical treatment unit (5), solid-liquid separation unit two (6), electrodialysis process unit (7), biological processing unit (9), solid-liquid separation unit three (10) orders link to each other, solid-liquid separation unit one (3), solid-liquid separation unit two (6), the mud discharging mouth of solid-liquid separation unit three (10) and biological processing unit (9) links to each other with sludge treatment unit (11), and the concentrated solution outlet of electrodialysis process unit (7) links to each other with concentrated solution processing unit (12).

Percolate in Fig. 3 (1) enters pH regulator unit one (2), pH regulator unit one (2), solid-liquid separation unit one (3), electrochemical treatment unit (5), solid-liquid separation unit two (6).Electrodialysis process unit (7), PH regulon three (8), biological processing unit (9), solid-liquid separation unit three (10) orders link to each other, the mud discharging mouth of solid-liquid separation unit one (3), solid-liquid separation unit two (6), solid-liquid separation unit three (10) and biological processing unit (9) links to each other with sludge treatment unit (11), and the concentrated solution outlet of electrodialysis process unit (7) links to each other with concentrated solution processing unit (12).

Percolate in Fig. 4 (1) enters pH regulator unit one (2), pH regulator unit one (2), solid-liquid separation unit one (3), pH regulator unit two (4), electrochemical treatment unit (5), solid-liquid separation unit two (6), PH regulon three (8), biological processing unit (9), solid-liquid separation unit three (10), electrodialysis process unit (7) order links to each other, solid-liquid separation unit one (3), solid-liquid separation unit two (6), the mud discharging mouth of solid-liquid separation unit three (10) and biological processing unit (9) links to each other with sludge treatment unit (11), and the concentrated solution outlet of electrodialysis process unit (7) links to each other with concentrated solution processing unit (12).Percolate in Fig. 5 (1) enters pH regulator unit one (2), pH regulator unit one (2), solid-liquid separation unit one (3), electrochemical treatment unit (5), solid-liquid separation unit two (6), PH regulon three (8), biological processing unit (9), solid-liquid separation unit three (10), electrodialysis process unit (7) order links to each other, solid-liquid separation unit one (3), solid-liquid separation unit two (6), the mud discharging mouth of solid-liquid separation unit three (10) and biological processing unit (9) links to each other with sludge treatment unit (11), and the concentrated solution outlet of electrodialysis process unit (7) links to each other with concentrated solution processing unit (12).

Claims

1. garbage percolation liquid treating system, mainly by the PH regulon, solid-liquid separation unit, the electrochemical treatment unit, the electrodialysis process unit, biological processing unit, the concentrated solution processing unit, the sludge treatment unit is formed, it is characterized in that: pH regulator unit one links to each other with solid-liquid separation unit one, solid-liquid separation unit one links to each other with pH regulator unit two, pH regulator unit two links to each other with the electrochemical treatment unit, the electrochemical treatment unit links to each other with solid-liquid separation unit two, solid-liquid separation unit two links to each other with the electrodialysis process unit, the electrodialysis process unit links to each other with biological processing unit, biological processing unit links to each other with solid-liquid separation unit three, solid-liquid separation unit one, solid-liquid separation unit two, solid-liquid separation unit three, biological processing unit links to each other with the sludge treatment unit again, and the electrodialysis process unit links to each other with the concentrated solution processing unit again.