CN1569673A - Method and apparatus for treating car-washing waste water - Google Patents
Method and apparatus for treating car-washing waste water Download PDFInfo
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- CN1569673A CN1569673A CN 200410017917 CN200410017917A CN1569673A CN 1569673 A CN1569673 A CN 1569673A CN 200410017917 CN200410017917 CN 200410017917 CN 200410017917 A CN200410017917 A CN 200410017917A CN 1569673 A CN1569673 A CN 1569673A
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Abstract
The invention discloses a water treatment method for strengthening coagulation under multiphase condition which comprises, charging granular solid catalyst into the coagulation reactor, then passing the raw water containing added medicament through the coagulation reactor. The method provided by the invention can remove the suspended state, colloid and dissolved impurities.
Description
Technical field
The present invention relates to a kind of process for treating waste water for car wash and equipment thereof, especially a kind of method of wastewater treatment and equipment thereof that is applied to the Small Washing parking lot.
Background technology
The Small Washing parking lot spreads all over the country at present, and the wastewater from car washer of automobile substantially all is disposable use discharging.Waste water resource not only, any discharging of wastewater from car washer cause severe contamination also for farmland, water system.Be water saving, the protection environment, the processing reuse of wastewater from car washer is imperative.
Since the nineties in last century; treatment process commonly used is primarily aimed at the characteristics that mainly contain suspended substance, petroleum-type and COD in the wastewater from car washer; adopt sand setting, oil removal means purifying treatment; water after the processing resupplies carwash (Ceng Jiaqun after regulating, pressurizeing; open and win. the improvement of carwash sewage and reuse. environment protection; 1990 (8): 11～13,20).Because this precipitation based on physical separation method, oil removal method can only be removed the coarse particulate matter in the waste water, and can not dispose the colloidalmaterial in the water, so its removal efficient to pollutent is not high.
On the basis of above-mentioned technology, add coagulating sedimentation and remove pollutent, can make petroleum-type, suspended substance, COD have certain decline, but dosage, sludge quantity are big, uneconomical economically; And the effluent quality vary within wide limits, the water quality instability.(calm, Liang Hucang, Yi Youting. flocculation agent is handled suspended substance in the carwash sewage. oil and gas chemical industry, 1992,21 (4): 256～258.) (Yang Dewei, novel carwash waste disposal plant. Chinese invention patent, application number 97201214, authorization notification number 2280091.)
In large-scale centralized water treatment field, have the example that adopts large-scale integrated water treatment equipment (xuwei, the processing of washing bay waste water designs with reuse. water supply and drainage, 1995 (2): 23～25).But yet there are no the integrated wastewater treatment and renovation equipment and the treatment system that are used for the Small Washing parking lot.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method and equipment thereof that Small Washing parking lot wastewater from car washer is handled that is applied to, and dose is big, floor space is big, the unsettled shortcoming of effluent quality to solve adding of existing in the prior art.
One of technical problem to be solved by this invention is to provide a kind of method of wastewater treatment that is applied to the Small Washing parking lot, and this method comprises the steps:
(1) coagulating agent with 0.5～200mg/L precipitates;
(2) carry out oil removing with asphalt felt;
(3) be that the haydite of 0.4～2mm adsorbs with diameter;
(4) separate with film;
(5) carry out disinfection water outlet residual chlorine concentration＞2mg/L with 1～100 disinfectant tablet.
Wherein said coagulating agent is one or more in polymerize aluminum chloride, polysulphide aluminium ferric chloride or the polyacrylamide, and described film is ceramic-film tube or hollow-fibre membrane, and the tap density of described haydite is 0.6～0.9g/cm
3, described sterilizing agent is a Losantin.
Described ceramic-film tube is the 50-200 root, and the ceramic-film tube of external diameter 7-15mm, length 600-1100mm, described hollow-fibre membrane are 10-50m
2
Another technical problem to be solved by this invention is to provide a kind of equipment that is used for above-mentioned process for treating waste water for car wash, and this equipment comprises water collecting basin, dosing tank, intake pump, adsorption tanks, film separation unit, clear water jar, sterilizer and clean water basin;
Wherein said adsorption tanks, film separation unit, the clear water jar, sterilizer becomes one, described water collecting basin, clean water basin are located at below ground, described dosing tank bottom pipe is led to water collecting basin, described adsorption tanks are positioned at the bottom of clear water jar, described film separation unit is positioned at the top of clear water jar, described water collecting basin is connected with the water sucking mouth of intake pump with recoil valve by water intaking valve respectively with clean water basin, the water outlet of intake pump links to each other with adsorption tanks by water intaking valve, link to each other with film separation unit with reverse flow valve by backwash valve, adsorption tanks pass through to connect valve with water inlet pipe, connecting valve links to each other with film separation unit, film one end in the film separation unit leads to the clear water jar, the clear water jar is connected with sterilizer with rising pipe, and sterilizer leads to clean water basin by rising pipe.
In the shell of adsorption tanks, be followed successively by asphalt felt, orifice plate from the bottom to top, fill in the light ceramic in 80 eye mesh screens; Membrane separation assemblies by shell,, blow-down pipe, pressure warning unit and ceramic-film tube (end sealing, the other end are packaged on the same orifice plate and directly are communicated to the clear water jar) or hollow-fibre membrane form; Sterilizer is made up of shell, last orifice plate, disinfectant tablet.
Advantage such as the present invention has that floor space is little, effluent characteristics good, water conditioning, use are easy to operate.Adopt membrane separation technique, the integrated suite of equipment with the integrated back invention of main treatment process adds off-set facility, and the wastewater from car washer of formation is handled reclaiming system, and treat effluent can reach " miscellaneous domestic water quality standard " (GJ25.1-89).
The design is suitable for the Small Washing parking lot, and its designing treatment water yield is 1-10m
3/ h,, the main treatment technology of employing comprises technologies such as coagulating sedimentation, asphalt felt oil removing, light ceramic filtration, membrane sepn, sterilization.This features on project is to have adopted many new and high technologies, as the asphalt felt of oleophilic drainage, light ceramic, pottery or hollow-fibre membrane etc., stable effluent quality, is easy to use operation, is convenient to maintenance.The use of membrane technique makes treat effluent water quality significantly better than treatment process in the past, the removal effect to turbidity is remarkable especially, and the main equipment volume is little, transportation, convenient management.
Description of drawings
Fig. 1 is sewage treatment technology process figure;
Fig. 2 is the sewage treatment equipment synoptic diagram.
Among the figure: water collecting basin 1, dosing tank 2, graticule mesh 3, water intaking valve 4, intake pump 5, water intaking valve 6, adsorption tanks 7, asphalt felt 8, connect valve 9, connect valve 10, film separation unit 11, blow-off valve 12, tensimeter 13, clear water jar 14, sterilizer 15, outlet valve 16, clean water basin 17, high pressure car-wash pump 18, reverse flow valve 19, reverse flow valve 20, backwash valve 21, backwash valve 22, backwash valve 23, return line 24, backwash tube 25, backwash tube 26, backwash tube 27, rising pipe 28, rising pipe 29, rising pipe 30, water inlet pipe 31, water inlet pipe 32
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is elaborated.
Embodiment 1.
Adopt following method that waste water is handled:
(1) polymerize aluminum chloride with 50mg/L precipitates;
(2) carry out oil removing with asphalt felt;
(3) be that 1.0mm, tap density are 0.9g/cm with diameter
3Haydite adsorb;
(4) with 100, the ceramic-film tube of external diameter 10mm, length 800mm separates;
(5) the membrane sepn water outlet flow through the filling 10 Losantins sterilizer carry out disinfection.
Embodiment 2.
Adopt following method that waste water is handled:
(1) precipitates with 30mg/L polysulphide aluminium ferric chloride, 1mg/L polyacrylamide;
(2) carry out oil removing with asphalt felt;
(3) be that 1.5mm, tap density are 0.6g/cm with diameter
3Haydite adsorb;
(4) use 25m
2Hollow-fibre membrane separate;
(5) the membrane sepn water outlet flow through the filling 20 Losantins sterilizer carry out disinfection.
The water quality detection method sees Table 1, and the water quality before and after handling sees Table 2.
Table 1 detection method and standard
| Project | The measuring method title | Measuring method (national standard number) |
| pH | Glass electrode method | GB/T6920-1986 |
| Turbidity (NTU) | Spectrophotometry | GB/T13200-1991 |
| SS(mg/L) | Weighting method | GB/T11901-1989 |
| COD(mg/L) | Dichromate titration | GB/T11914-1989 |
| BOD(mg/L) | Dilution and inoculation method | GB/T7488-1987 |
| Petroleum-type (mg/L) | Infrared spectrophotometry | GB/T16488-1996 |
| Total coliform number (individual/L) | Plate culture | Drinking Water inspection specification (Ministry of Health of the People's Republic of China 2001) |
| Chlorine residue | N, N-two second class-1,4-phenylenediamine volumetry | GB/T11897-1989 |
Table 2 water-quality determination result
| Project | Example 1 | Example 2 | The limit value of miscellaneous domestic water quality standard (GJ25.1-89) regulation | ||
| Wastewater from car washer | Handle back water quality | Wastewater from car washer | Handle back water quality | ||
| pH | 6.7-6.8 | 6.8-6.9 | ?7.62 | 7.25 | ?6.5-9.0 |
| Turbidity (NTU) | 500- 2000 | ＜5 | ＜5 | ?5 | |
| SS(mg/L) | 28-1600 | ＜5 | ?89 | ＜5 | ?5 |
| COD(mg/L) | 80-320 | 12-46 | ?244 | 37 | ?50 |
| BOD(mg/L) | 26-68 | 3-10 | ?52 | 8 | ?10 |
| Petroleum-type (mg/L) | 4-29 | 0.4-1.3 | ?7.4 | ＜0.4 | ?- |
| Total coliform number (individual/L) | 20-1000 | Do not detect | ?200 | Do not detect | ?3 |
| Chlorine residue | - | 2.0-3.0 | ?- | 2.3 | The terminal water of pipe network is not less than 0.2 |
Embodiment 3.
The used equipment of the present invention comprises water collecting basin 1, dosing tank 2, intake pump 5, adsorption tanks 7, film separation unit 11, clear water jar 14, sterilizer 15 and clean water basin 17;
Wherein adsorption tanks 7, film separation unit 11, clear water jar 14, sterilizer 15 becomes one, water collecting basin 1, clean water basin 17 are located at below ground, dosing tank 2 bottom pipe are led to water collecting basin 1, adsorption tanks 7 are positioned at the bottom of clear water jar 14, film separation unit 11 is positioned at the top of clear water jar 14, water collecting basin 1 is connected with the water sucking mouth of recoil valve 21 with intake pump 5 by water intaking valve 4 respectively with clean water basin 17, the water outlet of intake pump 5 links to each other with adsorption tanks (7) by water intaking valve 6, link to each other with film separation unit 11 with reverse flow valve 19 by backwash valve 22, adsorption tanks 7 pass through to connect valve 9 with water inlet pipe 31, connecting valve 10 links to each other with film separation unit 11, film one end in the film separation unit 11 leads to clear water jar 14, clear water jar 14 is connected with sterilizer 15 with rising pipe 28, and sterilizer 15 leads to clean water basin 17 by rising pipe 29.
Embodiment 4.
Method of wastewater treatment and process comprise normal processing process and anti-treating processes.
The normal processing process:
When normal processing, close backwash valve 21, backwash valve 22, backwash valve 23; Open water intaking valve 4, water intaking valve 6, connect valve 9, connect valve 10, outlet valve 16, reverse flow valve 19, reverse flow valve 20.
Wastewater from car washer enters water collecting basin 1 by graticule mesh 3 gravity flows, adds coagulating agent by dosing tank 2 simultaneously.Waste water is behind the water collecting basin preliminary sedimentation, promote waste water by water intaking valve 4, water intaking valve 6 by water inlet water pump 5, mirror water inlet pipe 32 enters adsorption tanks 7, in adsorption tanks, at first adsorb by asphalt felt 8 oil removings, haydite, again by connecting valve 9, connecting valve 10, enter film separation unit 11 through water inlet pipe 31, film separation unit is furnished with blow-off valve 12 and tensimeter 13, guarantees the security of operation; Clear water behind the membrane sepn enters clear water jar 14, and the water outlet of clear water jar is passed through outlet valve 16, entered clean water basin 17 by rising pipe 29 after rising pipe 28 enters sterilizer 15 sterilizations, and the clear water in the clean water basin is back to carwash with high pressure car-wash pump 18.
The concentrated solution that film separation unit produces enters water collecting basin 1 by reverse flow valve 19, reverse flow valve 20 by return line 24 backflows.
Backwash process:
Close water intaking valve 4, water intaking valve 6, outlet valve 16, reverse flow valve 20 in the backwash process.Open and connect valve 9, connection valve 10, reverse flow valve 19, backwash valve 21, backwash valve 22, backwash valve 23.
Clear water in the clean water basin 17 promotes through intake pump 5, by backwash valve 21, backwash valve 22, reverse flow valve 19, enter film separation unit through backwash tube 26 and backwash tube 25, film outer surface flushing back is passed through to connect valve 10, connected valve 9, enter adsorption tanks 7 through water inlet pipe 31, pass through backwash valve 23 at last, flow into water collecting basin 1 by backwash tube 27.
Claims (4)
1. a process for treating waste water for car wash is characterized in that this method comprises the steps:
(1) coagulating agent with 0.5～200mg/L precipitates;
(2) carry out oil removing with asphalt felt;
(3) be that the haydite of 0.4～2mm adsorbs with diameter;
(4) separate with film;
(5) carry out disinfection treat effluent residual chlorine concentration＞2mg/L with 1～100 disinfectant tablet.
2. process for treating waste water for car wash according to claim 1 is characterized in that described coagulating agent is one or more in polymerize aluminum chloride, polysulphide aluminium ferric chloride or the polyacrylamide, and the tap density of described haydite is 0.6～0.9g/cm
3, described film is ceramic-film tube or hollow-fibre membrane, described sterilizing agent is a Losantin.
3. process for treating waste water for car wash according to claim 2 is characterized in that described ceramic-film tube is the 50-200 root, and the ceramic-film tube of external diameter 7-15mm, length 600-1100mm, described hollow-fibre membrane are 10-50m
2
4. an equipment that is used for each described process for treating waste water for car wash of claim 1 to 3 is characterized in that this equipment comprises water collecting basin (1), dosing tank (2), intake pump (5), adsorption tanks (7), film separation unit (11), clear water jar (14), sterilizer (15) and clean water basin (17); Wherein said adsorption tanks (7), film separation unit (11), clear water jar (14), sterilizer (15) becomes one, described water collecting basin (1), clean water basin (17) are located at below ground, described dosing tank (2) bottom pipe is led to water collecting basin (1), described adsorption tanks (7) are positioned at the bottom of clear water jar (14), described film separation unit (11) is positioned at the top of clear water jar (14), described water collecting basin (1) is connected with the water sucking mouth of recoil valve (21) with intake pump (5) by water intaking valve (4) respectively with clean water basin (17), the water outlet of intake pump (5) links to each other with adsorption tanks (7) by water intaking valve (6), link to each other with film separation unit (11) with reverse flow valve (19) by backwash valve (22), adsorption tanks (7) pass through to connect valve (9) with water inlet pipe (31), connecting valve (10) links to each other with film separation unit (11), film one end in the film separation unit (11) leads to clear water jar (14), clear water jar (14) is connected with sterilizer (15) with rising pipe (28), and sterilizer (15) leads to clean water basin (17) by rising pipe (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017917 CN1569673A (en) | 2004-04-26 | 2004-04-26 | Method and apparatus for treating car-washing waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017917 CN1569673A (en) | 2004-04-26 | 2004-04-26 | Method and apparatus for treating car-washing waste water |
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| Publication Number | Publication Date |
|---|---|
| CN1569673A true CN1569673A (en) | 2005-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410017917 Pending CN1569673A (en) | 2004-04-26 | 2004-04-26 | Method and apparatus for treating car-washing waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332808A (en) * | 2013-07-11 | 2013-10-02 | 河北科技大学 | Sewage purification and recycling integrated device of multifunctional cleaning and sweeping vehicle |
| CN107226544A (en) * | 2017-07-05 | 2017-10-03 | 合肥天翔环境工程有限公司 | Sewage-treatment plant |
| CN112759138A (en) * | 2021-01-14 | 2021-05-07 | 苏州融和福天宝环保科技有限责任公司 | Method for removing oil stain in oily wastewater |
-
2004
- 2004-04-26 CN CN 200410017917 patent/CN1569673A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332808A (en) * | 2013-07-11 | 2013-10-02 | 河北科技大学 | Sewage purification and recycling integrated device of multifunctional cleaning and sweeping vehicle |
| CN103332808B (en) * | 2013-07-11 | 2014-11-05 | 河北科技大学 | Sewage purification and recycling integrated device of multifunctional cleaning and sweeping vehicle |
| CN107226544A (en) * | 2017-07-05 | 2017-10-03 | 合肥天翔环境工程有限公司 | Sewage-treatment plant |
| CN112759138A (en) * | 2021-01-14 | 2021-05-07 | 苏州融和福天宝环保科技有限责任公司 | Method for removing oil stain in oily wastewater |
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