WO2007118426A1 - Procédé et dispositif servant à traiter les eaux usées - Google Patents

Procédé et dispositif servant à traiter les eaux usées Download PDF

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Publication number
WO2007118426A1
WO2007118426A1 PCT/CN2007/001221 CN2007001221W WO2007118426A1 WO 2007118426 A1 WO2007118426 A1 WO 2007118426A1 CN 2007001221 W CN2007001221 W CN 2007001221W WO 2007118426 A1 WO2007118426 A1 WO 2007118426A1
Authority
WO
WIPO (PCT)
Prior art keywords
sewage
adsorption bed
active coke
water
inlet
Prior art date
Application number
PCT/CN2007/001221
Other languages
English (en)
Chinese (zh)
Inventor
Dawei Zhang
Original Assignee
Dawei Zhang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CNB2006100116677A external-priority patent/CN100496664C/zh
Priority claimed from CN 200620022884 external-priority patent/CN2885377Y/zh
Application filed by Dawei Zhang filed Critical Dawei Zhang
Publication of WO2007118426A1 publication Critical patent/WO2007118426A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them

Definitions

  • the invention belongs to the technical field of industrial wastewater and urban sewage treatment, and particularly relates to a method for treating industrial wastewater and urban sewage by using active coke.
  • the invention also relates to an apparatus for carrying out the above method.
  • Active coke is a kind of carbon material with developed internal pore structure, large specific surface area and strong adsorption capacity. It is a good adsorbent material and is usually used for flue gas desulfurization. How to use industrial coke to treat industrial wastewater, urban sewage, etc., so that industrial wastewater, urban sewage and other treatments can reduce floor space, reduce power consumption, reduce processing costs and investment costs, and improve the processing capacity and quality of industrial wastewater and urban sewage. To meet the increasingly high environmental standards, it has not been reported so far. Summary of the invention
  • the sewage treatment method provided by the present invention is to contact the sewage with the active coke, the flow rate of the sewage is 0.05 m/min, and the flow rate of the sewage is lm 3 /hour of the cross-sectional area of the activated coke per square meter; wherein the activated coke It is a carbon material having an iodine value of 20013 ⁇ 4 and a specific surface area of 150 m 2 /g, and has a particle diameter of 20 mesh.
  • the method wherein the sewage is industrial wastewater and urban sewage.
  • the method, wherein the contact time of the sewage with the activated coke during the treatment is controlled by adjusting the amount of sewage water.
  • a sewage treatment method comprising the steps of:
  • the flow rate and flow rate of the sewage are controlled so that the flow rate of the sewage is ⁇ 0.05 ⁇ 1 ⁇ 2 , and the flow rate of the sewage is ⁇ lm 3 / hour per square meter of active coke cross-sectional area.
  • an apparatus for sewage treatment comprising:
  • the active coke adsorption bed is a cuboid body having an open structure at the top of the active coke adsorption bed, a conical structure at the bottom, more than one discharge port at the bottom, and an activated coke having a particle size of 20 mesh in the active coke adsorption bed;
  • the sump is disposed around the middle of the top of the top of the active coke adsorption bed, and the sump is connected to at least one outlet branch on the side of the active coke adsorption bed;
  • a plurality of inlet pipes are installed in the lower part of the active coke adsorption bed, and water holes are distributed on the inlet pipe, and one end of the inlet pipe passes through the wall of the activated coke adsorption bed and is connected with a water inlet pipe through which the sewage enters the activity In a coke adsorption bed;
  • a control valve disposed on the water inlet pipe for controlling a flow rate and a flow rate of the sewage.
  • the center of the lower part of the active coke adsorption bed is equipped with a discharge flushing pipe, and the discharge flushing pipe has three rows of nozzles distributed at an angle of 120°, and the positions of the three rows of nozzles are alternately distributed.
  • the device has a discharge valve and a discharge device at a lower portion of the discharge port.
  • the discharging device is a screw pump, a plunger pump, a screw conveyor or a belt conveyor.
  • the water hole on the water inlet pipe is lmm ⁇ 2mm.
  • an inlet orifice plate is installed between the inlet pipe and the inlet branch pipe, and a water inlet hole is formed in the center of the inlet orifice plate.
  • the active coke filled in the can body is an iodine value of 200 mg/g, a carbon material having a specific surface area of 150 m 2 /g, and the active coke having a particle size of ⁇ 30 does not exceed 20% of the total amount of active coke. .
  • the active coke adsorption bed of the present invention comprises a body, a sump, a water outlet pipe, an active coke, a water inlet pipe, a water inlet valve, an inlet pipe, a water inlet plate, a column, a discharge port, a discharge valve, Discharge equipment, discharge flushing pipe, drain valve.
  • the active coke adsorption bed body provided by the invention has a rectangular parallelepiped shape, the top of the active coke adsorption bed has an open structure, the bottom has a tapered structure, and the bottom has more than one discharge opening, and the distance between the center lines of each two discharge openings is 1,500. ⁇ 2,500mm, the lower part of the discharge opening is equipped with a wide discharge.
  • the activated coke adsorption bed contains active coke having a particle size of ⁇ 20 mesh, wherein ⁇ 30 mesh does not exceed 20%.
  • a sump is installed around the middle of the top of the active coke adsorption bed, and the sump is 200-300 mm wide and 150-200 m deep.
  • the bottom of the collecting trough is 250 ⁇ 300mm away from the wall of the activated coke adsorption bed.
  • the collecting trough is equipped with more than one outlet branch on the side of the active coke adsorption bed.
  • the lower edge of the outlet branch is at the same horizontal line as the bottom of the sump.
  • the distance between the center lines of each of the two outlet pipes is 1,500 to 2,000 mm.
  • a plurality of inlet pipes are installed in the lower part of the active coke adsorption bed, and the distance between the centerlines of each of the two inlet pipes is
  • the horizontal distance between the outer inlet pipe center line and the inner wall of the active coke adsorption bed is 300 ⁇ 400mm
  • the vertical distance between the inlet pipe center line and the upper edge of the active coke adsorption bed bottom discharge port is 300 ⁇ 400mm
  • the inlet pipe center line The vertical distance from the bottom edge of the sump is 2,300 ⁇ 2,600mm.
  • a hole of 1 mm to 2 mm is distributed on the inlet pipe, and the line spacing and spacing of the center line between the hole and the hole are 20 mm to 30 mm.
  • the inlet pipe is connected to the inlet branch pipe through the wall of the active coke adsorption bed, and an inlet orifice plate is installed on the inlet pipe between the wall of the activated coke adsorption bed and the inlet branch pipe.
  • the other end of the inlet pipe is connected to the blowdown valve through the wall of the activated coke adsorption bed. Open the drain valve regularly, and discharge the sediment, floc and dirt accumulated in the inlet pipe to avoid blockage of the inlet pipe of the activated coke bed.
  • the inlet water pipe is installed with a water inlet.
  • the center of the lower part of the active coke adsorption bed is equipped with a discharge pipe of 32 mm in diameter, and the vertical distance between the center line of the discharge flushing pipe and the upper edge of the discharge port of the active coke adsorption bed is 200 ⁇ 300 mm; the center line of the discharge flushing pipe is above The vertical distance between the centerlines of the inlet pipes is 100mm.
  • the horizontal distance between the nozzle and the center line of the nozzle is 300 mm, and the three rows of nozzles are distributed at an angle of 120° to each other.
  • the positions of the three rows of nozzles are distributed alternately with each other.
  • the discharge flushing pipe has a valve connected to the flushing water pipe.
  • the volume of the activated coke adsorption bed is designed according to the amount of treated water.
  • the contact time of wastewater, sewage and activated coke in the activated coke adsorption bed should be ⁇ 25 minutes, and the flow of treated water is ig ⁇ 0.05 m / mino.
  • the active coke adsorption bed is adjusted by the inlet valve installed on the inlet branch pipe. The flow of wastewater and sewage, control and adjust the contact time of wastewater and sewage during the treatment with active coke.
  • the activated coke adsorption bed should be made of corrosion-resistant materials or treated with anti-corrosion treatment.
  • the active coke is filled from the upper portion of the activated coke adsorption bed to the activated coke adsorption bed with a particle size of ⁇ 20 mesh, wherein ⁇ 30 mesh does not exceed 20%.
  • the height of the active coke layer is based on the center line of the inlet pipe and is upwards by 1,300 to 1,600 mm.
  • the saturated activated coke after dehydration is thermally regenerated, activated, and reused, and the dehydrated saturated coke can also be made into boiler fuel.
  • the active coke, open the inlet valve, and the activated coke bed restarts.
  • FIG. 1 is a schematic structural view of an active coke adsorption bed of the present invention
  • Figure 2 is a cross-sectional view taken along line B-B of Figure 1;
  • Figure 3 is a schematic cross-sectional view taken along line C-C of Figure 1;
  • FIG. 4 is a schematic cross-sectional view of FIG. 1 taken along line DD. detailed description
  • the active coke adsorption bed of the present invention comprises a body 1, a sump 2, a water branch pipe 3, and an active coke
  • Inlet branch pipe 5. Inlet water width 6. Inlet pipe 7. Inlet plate 8. Column 9, Drainage port 10, Drain valve 11, Discharge device 12, Drainage pipe 13, Drain valve 14.
  • the active coke adsorption bed body 1 provided by the present invention is a rectangular parallelepiped, which is supported by a plurality of columns 9 (for example, four), the top of the active coke adsorption bed is an open structure, the bottom is a cone structure, and the bottom has More than one discharge opening 10, the distance between the center lines of each of the two discharge openings 10 is 1,500 to 2,500 imn, and the discharge valve 11 is installed in the lower portion of the discharge opening 10. Below the discharge valve 11, there is a discharge device 12, and the discharge device 12 can be a screw pump, a plunger pump, a screw conveyor, and a belt conveyor.
  • the activated coke adsorption bed contains active coke 4 having a particle size of ⁇ 20 mesh, wherein ⁇ 30 mesh does not exceed 20%.
  • a sump 2 is installed around the middle of the top of the top of the active coke adsorption bed, and the sump 2 is 200 to 300 mm wide and 150 to 200 mm deep.
  • the bottom of the sump 2 is spaced from the wall of the active coke adsorption bed by 250 to 300 mm, and the sump 2 is connected to one or more outlet branch pipes 3 on the side of the active coke adsorption bed wall, and the lower edge of the outlet branch pipe 3 is at the same horizontal line as the bottom of the sump 2 .
  • the distance between the center lines of each of the two outlet pipes 3 is 1,500 to 2,000 mm.
  • a plurality of inlet pipes 7 are installed in the lower part of the activated coke adsorption bed, and the distance between the centerlines of each of the two inlet pipes 7 is 200 to 400 mm, and the horizontal distance between the centerline of the outer inlet pipe 7 and the inner wall of the active coke adsorption bed is 300. ⁇ 400mm, the vertical distance between the center line of the inlet pipe 7 and the upper edge of the discharge port 10 of the active coke adsorption bed is 300 ⁇ 400mm; the vertical distance between the center line of the inlet pipe 7 and the lower bottom edge of the sump 2 is 2,300 ⁇ 2,600irim.
  • a hole of 1 mm to 2 mm is distributed on the inlet pipe 7, and the line spacing and spacing of the center line between the hole and the hole are 20 mm to 30 mm.
  • the inlet pipe 7 end is connected to the inlet branch pipe 5 through the active coke adsorption bed wall, and the inlet orifice plate 8 is installed on the inlet pipe 7 between the active coke adsorption bed wall and the inlet branch pipe 5.
  • the diameter of the inlet orifice is designed according to the water flow rate and the water flow rate distributed by each inlet pipe.
  • the purpose of installing the inlet orifice plate 8 is to make the water inlet amount of each inlet pipe 7 average. .
  • the other end of the inlet pipe 7 is connected to the blowdown valve 14 through the wall of the activated coke adsorption bed.
  • the drain valve 14 is opened periodically, and the sediment, floc, and dirt accumulated in the inlet pipe 7 are discharged to prevent the active coke bed inlet pipe 7 from being clogged.
  • An inlet valve 6 is mounted on the inlet branch pipe 5.
  • the center of the lower part of the active coke adsorption bed is provided with a discharge flushing pipe 13 having a diameter of 32 mm, and the vertical line between the center line of the discharge flushing pipe 13 and the upper edge of the discharge opening 10 of the active coke adsorption bed is 200 to 300 mm;
  • the vertical distance between the center line of the tube 13 and the center line of the inlet pipe 7 above it is 100 mm.
  • the discharge flushing pipe 13 has three rows of nozzles with a diameter of 2 mm, and the horizontal distance between the nozzle and the center line of the nozzle is 300 mm, and the three rows of nozzles are distributed at an angle of 120° to each other. The positions of the three rows of nozzles are distributed alternately with each other.
  • the discharge flushing pipe 13 has a valve connected to the flush water pipe.
  • the volume of the activated coke adsorption bed is designed according to the treated water volume.
  • the water flow rate per square meter of the active coke adsorption bed is ⁇ lm 3 /hour, and the contact time of the wastewater, sewage and active coke 4 in the activated coke adsorption bed should be ⁇ 25 minutes.
  • the flow rate of water is ⁇ 0.05 m / min.
  • the inlet valve 6 installed on the inlet branch pipe 5 regulates the flow rate of the wastewater and the sewage in the activated coke adsorption bed, and controls and adjusts the contact time of the wastewater and the sewage with the active coke 4 during the treatment.
  • the activated coke adsorption bed should be made of corrosion-resistant materials such as stainless steel, or made of anti-corrosion treatment.
  • the active coke 4 having a particle size of ⁇ 20 mesh, wherein ⁇ 30 mesh does not exceed 20% is added to the activated coke adsorption bed.
  • the height of the active coke layer is based on the centerline of the inlet pipe 7, and is upwards by 1,300 to 1,600 mm.
  • the activated coke 4 in the activated coke bed is saturated for a certain period of time, it is replaced.
  • the inlet valve 6 is closed, and the discharge width 11 installed at the discharge port 10 below the activated coke adsorption bed is opened, and according to the discharge condition, the center of the active coke adsorption bed is opened and the 32 mm diameter discharge material is installed.
  • the valve between the flushing pipe 13 and the water inlet pipe 5 supplies water to the discharge flushing pipe 13, and discharges the large amount of the activated coke adsorption bed, the saturated activated coke 4, and the discharge device 12 installed under the discharge valve 11 Discharge, transfer to a centrifugal dewatering machine installed in the water treatment plant for dehydration.
  • the saturated activated coke after dehydration is thermally regenerated, activated, and reused, and the dehydrated saturated coke can also be made into boiler fuel.
  • the valve between the discharge flushing pipe 13 and the water inlet pipe 5, the discharge valve 11 and the discharge device 12 are closed, and the top of the active coke adsorption bed is re-started.
  • a paper mill uses two activated coke adsorption beds in parallel to treat the wastewater after biochemical treatment and then reuse it.
  • the composition of wastewater after biochemical treatment is - chemical oxygen demand (COD) 370mg / L, biochemical oxygen demand (BOD) 110mg / L, suspended solids (SS) 255mg / L, color is 96 times, chloride 1130mg / L , alkalinity 12.4mg / L, hardness 7mg L, conductivity 5050, PH value 11.07 ⁇
  • the active coke adsorption bed body provided by the invention is a rectangular parallelepiped, the top of the active coke adsorption bed is an open structure, the bottom is a cone structure, and the bottom has 20 discharge openings, and the distance between the centerlines of each two discharge openings is 2,000. Mm, the discharge valve is equipped with a discharge valve at the lower part of the discharge port. Below the discharge valve is a discharge device, and the discharge device is a belt conveyor.
  • the activated coke adsorption bed contains active coke having a particle size of ⁇ 20 mesh, wherein ⁇ 30 mesh does not exceed 20%.
  • the active coke breeze is based on the centerline of the inlet pipe and is upwards by 1,600 mm.
  • a sump is installed around the middle of the top of the active coke adsorption bed, and the sump is 200 ⁇ 300nmi deep.
  • the bottom of the collecting trough is 250 ⁇ 300mm away from the wall of the activated coke adsorption bed.
  • the collecting trough is equipped with more than one outlet branch on the side of the active coke adsorption bed.
  • the lower edge of the outlet branch is at the same horizontal line as the bottom of the sump.
  • the distance between the center lines of each of the two outlet pipes is 1,500 ⁇ 2,000mm.
  • the distance between the center line of each two rows of inlet pipes is 400mm, and the horizontal distance between the center line of the inlet pipe and the inner wall of the active coke bed is 400mm.
  • the vertical distance of the upper edge of the discharge opening of the active coke adsorption bed is 400 mm; the vertical distance between the center line of the inlet pipe and the bottom edge of the sump is 2,600 mm.
  • a 2 mm hole is distributed on the inlet pipe, and the line spacing and spacing between the hole and the hole are 30 mm.
  • Both ends of the inlet pipe pass through the wall of the activated coke adsorption bed, and one end of the inlet pipe passing through the wall of the activated coke adsorption bed is equipped with a sewage discharge valve, and the sewage discharge valve is periodically opened to discharge sediments, flocs and dirt accumulated in the inlet pipe. Avoid plugging the inlet pipe.
  • the other end of the inlet pipe passing through the wall of the activated coke adsorption bed is connected to the water inlet pipe, and the inlet pipe between the wall of the activated coke adsorption bed and the branch pipe is provided with a water inlet plate, and the water inlet installed on each inlet pipe There is a 6mm diameter hole in the middle of the orifice plate.
  • the purpose of installing the inlet orifice plate is to average the water intake of each inlet pipe.
  • the center of the lower part of the active coke adsorption bed is provided with a discharge flushing pipe 13 having a diameter of 32 mm, and the vertical line between the center line of the discharge flushing pipe and the upper edge of the discharge opening 10 of the active coke adsorption bed 1 is 200 to 300 mm;
  • the vertical distance between the center line of the tube 13 and the center line of the inlet pipe 7 above it is 100 mm.
  • the discharge flushing pipe 13 has three rows of nozzles with a diameter of 2 mm.
  • the horizontal distance between the nozzle and the center line of the nozzle is 300 mm, and the three rows of nozzles are 120 with each other. Angular distribution.
  • the positions of the three rows of nozzles are distributed alternately with each other.
  • the volume of the activated coke adsorption bed is designed according to the amount of treated water.
  • the flow rate of the cross-sectional area per square meter of the activated coke adsorption bed is ⁇ lm 3 /hour, and the contact time of the wastewater, sewage and activated coke in the activated coke adsorption bed should be ⁇ 25 minutes, and the flow rate of the treated water is ⁇ 0.05 ⁇ 1/1 ⁇
  • the inlet valve installed on the inlet pipe such as the opening degree, regulates the flow of wastewater and sewage in the activated coke adsorption bed, and controls and adjusts the contact time of the wastewater and sewage with the activated coke during the treatment.
  • the activated coke adsorption bed should be made of corrosion-resistant materials such as stainless steel, or made of anti-corrosion treatment.
  • the active coke having a particle diameter of ⁇ 20 mesh, wherein ⁇ 30 mesh does not exceed 20% is added from the upper opening of the activated coke adsorption bed to the active coke adsorption bed.
  • the height of the active coke layer is 1,300 ⁇ 1,600mm upwards based on the centerline of the inlet pipe.
  • the activated coke is a carbon material having an iodine value of 200 mg/g and a specific surface area of 150 m 2 /g.
  • the wastewater and sewage are pumped to each active coke adsorption bed through an influent connection pipe connecting two active coke adsorption beds; and then through the inlet valve and the inlet branch of each active coke adsorption bed.
  • the inlet plate flows into the inlet pipe; the small holes distributed from the inlet pipe evenly flow out through the active coke adsorption layer; the water after the activated coke adsorption treatment is applied from the outer wall of the sump surrounding the active coke adsorption bed. Flowing into the sump; flowing out through the effluent branch pipe connected to the sump, through the water connection pipe connecting the two active coke adsorption bed outlet pipes Delivered to the designated location.
  • the drain valve is periodically opened to discharge the sediment, floc and dirt accumulated in the inlet pipe to avoid blockage of the inlet pipe of the activated coke adsorption bed.
  • COD Chemical oxygen demand
  • BOD biochemical oxygen demand
  • SS suspended solids
  • the activated coke in the activated coke adsorption bed When the activated coke in the activated coke adsorption bed is saturated for a certain period of time, it is replaced.
  • the valve between the water pipes supplies water to the discharge flushing pipe, discharges the large amount of the activated coke adsorption bed, and discharges the saturated activated coke, and discharges it from the discharge device (screw pump) installed under the discharge valve to the water. Dewatering of the centrifugal dewatering machine installed in the workshop.
  • the desiccated activated coke after dehydration is thermally regenerated, activated, and reused, and the dehydrated saturated coke can also be made into boiler fuel.
  • the active coke, open the inlet water, and the activated coke bed restarts.

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

Procédé servant à traiter les eaux usées et consistant à faire couler les eaux usées à travers du charbon actif. La vitesse d'écoulement des eaux usées est ≤0,05m/mn, le volume d'écoulement par m2 d'eaux usées étant ≤1m3/heure et la granularité du charbon actif étant ≤20 mesh. Dispositif servant à traiter les eaux usées et comprenant un lit absorbant de charbon actif découpé en dés possédant un sommet ouvert et un fond conique possédant plus d'un orifice d'alimentation. Le lit absorbant est rempli de charbon actif dont la granularité est ≤20 mesh. Un réservoir collecteur d'eau placé au niveau de la circonférence intérieure et au centre du sommet du lit absorbant est accouplé à au moins un conduit de sortie d'un côté du lit absorbant. Les multiples conduits d'entrée présentant des orifices sont situés au fond du lit absorbant. Une extrémité des conduits d'entrée est reliée à un conduit de dérivation d'entrée à travers la paroi du lit absorbant. Les eaux usées pénètrent dans le lit absorbant par le conduit de dérivation d'entrée.
PCT/CN2007/001221 2006-04-13 2007-04-13 Procédé et dispositif servant à traiter les eaux usées WO2007118426A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CNB2006100116677A CN100496664C (zh) 2006-04-13 2006-04-13 一种污水处理装置
CN 200620022884 CN2885377Y (zh) 2006-04-13 2006-04-13 一种活性焦吸附床
CN200610011667.7 2006-04-13
CN200620022884.1 2006-04-13

Publications (1)

Publication Number Publication Date
WO2007118426A1 true WO2007118426A1 (fr) 2007-10-25

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PCT/CN2007/001221 WO2007118426A1 (fr) 2006-04-13 2007-04-13 Procédé et dispositif servant à traiter les eaux usées

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801030A1 (de) * 1978-01-11 1979-07-12 Omnium Assainissement Verfahren zur biologischen wasserreinigung
US4202770A (en) * 1974-08-06 1980-05-13 Bergwerksverband Gmbh Apparatus for purification of waste water by means of active carbon
DE3514045A1 (de) * 1985-04-18 1986-10-23 Bernd 6700 Ludwigshafen Seidel Vorrichtung zur entsorgung belasteter abwaesser
WO2001049612A1 (fr) * 2000-01-07 2001-07-12 Clear Water 42 Holding Asa Filtre de purification de l'eau
CN1587080A (zh) * 2004-09-21 2005-03-02 沈阳戴维环保节能设备有限公司 一种废水、污水过滤和吸附机组
CN1803642A (zh) * 2006-01-13 2006-07-19 张大伟 一种水处理装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202770A (en) * 1974-08-06 1980-05-13 Bergwerksverband Gmbh Apparatus for purification of waste water by means of active carbon
DE2801030A1 (de) * 1978-01-11 1979-07-12 Omnium Assainissement Verfahren zur biologischen wasserreinigung
DE3514045A1 (de) * 1985-04-18 1986-10-23 Bernd 6700 Ludwigshafen Seidel Vorrichtung zur entsorgung belasteter abwaesser
WO2001049612A1 (fr) * 2000-01-07 2001-07-12 Clear Water 42 Holding Asa Filtre de purification de l'eau
CN1587080A (zh) * 2004-09-21 2005-03-02 沈阳戴维环保节能设备有限公司 一种废水、污水过滤和吸附机组
CN1803642A (zh) * 2006-01-13 2006-07-19 张大伟 一种水处理装置

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