CN202016917U

CN202016917U - Secondary landfill leachate treatment system

Info

Publication number: CN202016917U
Application number: CN2011201219446U
Authority: CN
Inventors: 严廷林; 严博
Original assignee: Sichuan Davos Environmental Protection Technology Co Ltd
Current assignee: Sichuan Davos Environmental Protection Technology Co Ltd
Priority date: 2011-04-23
Filing date: 2011-04-23
Publication date: 2011-10-26
Anticipated expiration: 2021-04-23

Abstract

The utility model discloses a secondary landfill leachate treatment system which comprises a raw water tank (1), a primary treatment system (2), a reverse osmosis treatment device (17), a pure water tank (13) and a cleaning device (18); the primary treatment system (2) comprises a variable-frequency raw water delivery pump (3), a manganese sand filter (5), a multi-medium filter (6) and an activated carbon filter (8); the reverse osmosis treatment device (17) comprises a cartridge filter A (10), an RO (reverse osmosis) high pressure pump (11) and an RO (reverse osmosis) device (12); the pure water tank (13) is connected behind the RO (reverse osmosis) device (12); and the cleaning device (18) comprises a cleaning water tank (14), a variable-frequency cleaning water delivery pump (15) and a cartridge filter B (16). Since two stages of reverse osmosis devices are arranged, the recovery ration of produced water is high, the service life of the permeable membrane is long, the operation of cleaning the permeable membrane is simple and convenient, and the quality of produced water can reach the level of pure water or ultrapure water.

Description

Percolate second-stage treatment system

Technical field

The utility model relates to a kind of Sewage treatment systems, particularly a kind of percolate second-stage treatment system.

Background technology

The method of water treatment commonly used has: sedimentation and filtration method, water softening, active carbon adsorption, deionization method, reverse osmosis method, biochemical process or the like are used singly or in combination sedimentation and filtration method, taxable tenderizer, active carbon adsorption, deionization method, biochemical process and dispose of sewage and be difficult to obtain the very high water of purity; And reverse osmosis method is a kind of membrane separation technique of utilizing pressure difference for power, under certain pressure, water molecules can pass through reverse osmosis membrane, and the inorganic salt in the former water, heavy metal ion, organism, inorganics, bacterium, impurity such as virus can't pass through reverse osmosis membrane, thereby pure water that can pass through and the condensed water strictness that can't pass through are made a distinction, if but do not carry out pre-process before the reverse osmosis then dirt accumulation arranged on the permeable membrane easily, cause the reverse osmosis function reduction, so prior art exists, and to produce the water rate of recovery low, concentrated water discharge concentration is low, permeable membrane is short work-ing life, permeable membrane is seriously polluted, shortcomings such as permeable membrane backwash difficulty.

The utility model content

The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of percolate second-stage treatment system that produces water rate of recovery height, produces the water high purity is provided.

The purpose of this utility model is achieved through the following technical solutions: percolate second-stage treatment system, and it is made of raw water box, one-level treatment system, reverse osmosis treatment system, pure water case and washing unit; Described one-level treatment system comprises the former water conveying pump of the frequency conversion that connects successively by pipeline, filtration with manganese sand device, more medium filter, charcoal filter, in the intake line of filtration with manganese sand device, also be connected with chemicals dosing plant A, in the intake line of charcoal filter, also be connected with chemicals dosing plant B; Described reverse osmosis treatment system comprises chemicals dosing plant C, security personnel's strainer A, RO high-pressure pump and the RO reverse osmosis unit that connects successively by pipeline; The output of raw water box is connected by the former water conveying pump of pipeline and frequency conversion, and the output of charcoal filter is connected with chemicals dosing plant C by pipeline, and the pure water case is connected by the output of pipeline with the RO reverse osmosis unit; Washing unit comprises that conveying pump is cleaned in the cleaning water tank, the frequency conversion that connect successively by pipeline, the filter B of ensuring public security, and security personnel's filter B is connected by the output of pipeline with the RO high-pressure pump.

Described RO reverse osmosis unit comprises first-stage reverse osmosis device and two-pass reverse osmosis device.

The utlity model has following advantage: owing to comprise multiple treatment process in the one-level treatment system, the one-level that can obtain higher water quality after former water is handled through the one-level treatment system is produced water, so both improved the water quality that native system finally produces water, can make reverse osmosis unit in the process for the treatment of water, can keep high-recovery again, can guarantee that again reverse osmosis membrane is less scaling, prolong the work-ing life of reverse osmosis membrane; The utility model is provided with washing unit, makes the work of cleaning reverse osmosis unit simple and easy to do; RO reverse osmosis unit of the present utility model is provided with the two steps ro device, uses the product water water quality of native system can reach pure water, ultrapure water.

Description of drawings

Fig. 1 the utility model structural representation

Among the figure, 1-raw water box, 2-one-level treatment system, the former water conveying pump of 3-frequency conversion, 4-chemicals dosing plant A, 5-filtration with manganese sand device, 6-more medium filter, 7-chemicals dosing plant B, the 8-charcoal filter, 9-chemicals dosing plant C, 10-security personnel strainer A, 11-RO high-pressure pump, the 12-RO reverse osmosis unit, 13-pure water case, 14-cleans water tank, conveying pump is cleaned in the 15-frequency conversion, the 16-filter B of ensuring public security, 17-reverse osmosis treatment system, the 18-washing unit, 19-first-stage reverse osmosis device, 20-two-pass reverse osmosis device.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described:

As Fig. 1, it is made of raw water box 1, one-level treatment system 2, reverse osmosis treatment system 17, pure water case 13 and washing unit 18; Described one-level treatment system 2 comprises the former water conveying pump 3 of the frequency conversion that connects successively by pipeline, filtration with manganese sand device 5, more medium filter 6, charcoal filter 8, in the intake line of filtration with manganese sand device 5, also be connected with chemicals dosing plant A4, in the intake line of charcoal filter 8, also be connected with chemicals dosing plant B7; Described reverse osmosis treatment system 17 comprises chemicals dosing plant C9, security personnel's strainer A10, RO high-pressure pump 11 and the RO reverse osmosis unit 12 that connects successively by pipeline; The output of raw water box 1 is connected by the former water conveying pump 3 of pipeline and frequency conversion, and the output of charcoal filter 8 is connected with chemicals dosing plant C9 by pipeline, and pure water case 13 is connected by the output of pipeline with RO reverse osmosis unit 12; Washing unit 18 comprises that conveying pump 15 is cleaned in the cleaning water tank 14, the frequency conversion that connect successively by pipeline, the filter B 16 of ensuring public security, security personnel's filter B 16 is connected by the output of pipeline with RO high-pressure pump 11, and RO reverse osmosis unit 12 comprises first-stage reverse osmosis device 19 and two-pass reverse osmosis device 20.

Use of the present utility model is as follows: former water flows out from raw water box 1 by the former water conveying pump 3 of frequency conversion to be carried to filtration with manganese sand device 5, chemicals dosing plant A4 adds flocculation agent and makes suspended particulates in the former water in former water therebetween, the micelle thing is condensed into flocs unit mutually, former water is by behind the filtration with manganese sand device 5, ferric iron or the tetravalence manganese in the former water is removed in the processing of process filtration with manganese sand device 5, suspended substance, mechanical impurity, organism, reduce water turbidity, absorption, remove the pigment in the water, chlorine residue colloid etc., further remove suspended impurity in the sewage through the filtration of more medium filter 6 again, colloidal state impurity and fine particle bacterium etc., chemicals dosing plant B7 adds S-WAT and removes chlorine residue in the former water in the former water that more medium filter 6 leaches then, former then water is by charcoal filter 8, by the chlorine residue that can't remove in the charcoal filter 8 absorption primes filtrations, small organic molecule, impurity such as heavy metal ion, chemicals dosing plant C9 adds sodium hydroxide in former water then, S-WAT, further dechlorination and improve the pH value of stoste, improve the processing power of reverse osmosis unit, former water behind the adding medicament enters RO reverse osmosis unit 12 after being boosted by RO high-pressure pump 11 through security personnel's strainer A10, flow into pure water case 13 through the water purification that obtains after 19 processing of first-stage reverse osmosis device, concentrated stream after first-stage reverse osmosis device 19 is handled is gone into two-pass reverse osmosis device 20, carry out the reverse-osmosis treated second time, the pure water that obtains flows into pure water case 13, dense water is discharged by the concentrated water discharge pipe, finishes the second-stage treatment to percolate.

When cleaning RO reverse osmosis unit 12, cleaning conveying pump 15 by frequency conversion will clean water in the water tank 14 and send into RO reverse osmosis unit 12 through the filter B 16 of ensuring public security and wash, scavenging solution after the flushing flows out along the concentrated water drainage waterpipe of RO reverse osmosis unit 12, finishes flushing work.

Claims

1. percolate second-stage treatment system is characterized in that: it is made of raw water box (1), one-level treatment system (2), reverse osmosis treatment system (17), pure water case (13) and washing unit (18); Described one-level treatment system (2) comprises the former water conveying pump of the frequency conversion that connects successively by pipeline (3), filtration with manganese sand device (5), more medium filter (6) and charcoal filter (8), in the intake line of filtration with manganese sand device (5), also be connected with chemicals dosing plant A(4), in the intake line of charcoal filter (8), also be connected with chemicals dosing plant B(7); Described reverse osmosis treatment system (17) comprises the chemicals dosing plant C(9 that connects successively by pipeline), security personnel strainer A(10), RO high-pressure pump (11) and RO reverse osmosis unit (12); The output of raw water box (1) is connected by the former water conveying pump of pipeline and frequency conversion (3), and the output of charcoal filter (8) is by pipeline and chemicals dosing plant C(9) be connected, pure water case (13) is connected by the output of pipeline with RO reverse osmosis unit (12); Washing unit (18) comprises that conveying pump (15) is cleaned in the cleaning water tank (14), the frequency conversion that connect successively by pipeline, the filter B (16) of ensuring public security, and security personnel's filter B (16) are connected by the output of pipeline with RO high-pressure pump (11).

2. percolate second-stage treatment according to claim 1 system, it is characterized in that: described RO reverse osmosis unit (12) comprises first-stage reverse osmosis device (19) and two-pass reverse osmosis device (20).