Technology and Technical Solutions Patent Protection based on the inventions of Russia # 2139257, 2114070, 2220915, 2390503, applications # 2009103724, 2010113444
In world practice of wastewater treatment there existed only two fundamental principles of sewage purification works - 1) biofilters with steady purification mode and minimum power consumption; 2) aerotanks with high purification quality. Combination of their properties in combined works (CW) as well as use of water-jet aeration according to RF patents No. 1020379, 1214608, 1583148, 1761688, 1761690, 1761691, 2085515, 2114070, 2139257, 2220915, 2390503, United States Patent No. US 6,217,759 B1 provides the following aspects:
-high and reliable purification quality;
-power consumption reducing by 2-3 times;
-maximum work automation;
-possibility of placing compact environmentally friendly structures in residential neighborhoods.
Therefore, the new third principle of wastewater treatment will be the basic one in the XXI century.
You and your company have a unique opportunity to share with us a monopolistic position at the market of new constructions and renovation of existing treatment facilities. You can make provision for the future while participating in a joint patenting of optimal technological and technical solutions according to the international application under PCT No. 2009103724/15 (see patent search report) and additional inventions. Terms and conditions of participation are stated in the Agreement.
United international application
The invention relates to treatment of domestic and industrial wastewater containing organic pollutants of BOD from 50 to 50000 mg/dm3, suspended solids from 50 to 1500 mg/dm3, fat-300 mg/dm3 and can be used for wastewater treatment of houses, towns, cities, meat-packing plants, fisheries, canneries, cattle farms, yeast factories, breweries, sugar refineries, pulp and paper mills, chemical and microbiological industries, etc. The invention is also designed for wastewater with high hydrosulfides and hydrogen sulfide (5-100 mg/dm3) and ammonium (50-100 mg/dm3) content, formed during the decay of organic pollutants in the reservoirs and the receiving tank pumping stations, delivery of sewage from septic tanks and cesspools as well as methane fermentation in anaerobic bioreactors.
Claims
1. Installation for deep biochemical wastewater treatment consists of:
- devices for mechanical treatment,
- the mixing chamber where sewage mixes with sludge,
- circulation pump and a device of combined biological treatment, including biofilter with in-plane loading, irrigation system, collecting trays and drain tanks. They are connected to the aeration columns of water jet aeration, buried in the aeration zone, and after-treatment device.
The difference is that in combined installation for biological treatment with capacity from 5 to 15000 m3/day the irrigation system of filters includes trays with drain pipes and reflective discs. The distance from the upper ends of the discharge pipe trays to disk reflectors is 0,8-2 m and the distance between the centers of trays and the distance between the axes of the sockets in the tray is 0,6-1,8 m. Diameter of aeration columns is from 25 to 100 mm and their height above the liquid level in aeropack is 1,2-3,5 m and penetration under the liquid level is 1,5-4 m. The distance between the offset columns in the upper part is 50-500 mm and the distance between the bottom offsets of the aeration columns is 0,5-3 m.
2. Installation according to p.1, is characterized by the fact that the length of the discharge pipes, installed in the trays of the irrigation system, is between two and six of their diameters, and the diameter of the reflective disks is 80-200 mm. Pipelines feeding the mixture of wastewater and sludge to trays of biofilter irrigation are equipped with latches. In addition at the beginning of the trays dampers are mounted, and before the initial discharge pipe jet-directing plates are installed.
3. Installation according to p. 1, is characterized by the fact that the trays of biofilter irrigation system are equipped with helium-neon lasers to stimulate the growth of microflora, the processes of nitrification and denitrification.
4. Installation according to p. 1, is characterized by the fact that the elements of bacteria bed are of ball shape with diameter 35-100 mm, and 4-10-cavities whose axes converge at the center of the ball. The balls have protrusions on the surface of 0,1-1,5 mm. Metal compounds are included into the composition of elements’ material.
5. Installation according to p. 1, is characterized by the fact that biofilter loading is made of corrugated ceramic sheets of width 0,5-1,5 m, height 0,5-3 m, thickness 2-4 mm, with protrusions (roughness) on the surface of 0, 1-2 mm, with a framework of parallel and longitudinal wavy bands of width and thickness of 3-10 mm. A part of the longitudinal strips is made in shape of projected wavy partition-walls of 10-35 mm wide. Metal compounds are included into the composition of sheets.
6. Installation according to p. 1, is characterized by the fact that biofilter drain trays are equipped with jet-directing reflector. The upper part of the aeration columns is designed as pipes, screwed into the coupling attached to the bottom of drain tray and drain tray is equipped with access port for pipes installation and cleaning.
7. Installation according to p. 1, is characterized by the fact that the discharge pipes of biofilters irrigation systems, and in the pipes of the upper parts of the aeration columns some gutters are done in the shape of a spiral with the length from 1 to 1,5 of turnover and a height not exceeding 0,7 of pipe diameter.
8. Installation according to p. 1, is characterized by the fact that outer perimeter partition-wall separating biofilter from aeropack, is equipped with holes or valves for air bypass at a distance of 0,5-1,5 m.
9. Installation according to p. 1, is characterized by the fact that for aeration columns diameters from 25 to 100 mm, height of the lower columns cuts above the bottom of the aeration zone is 0,05-0,4 meters. The distance from the lower extreme aeration columns to the corner of the flat and conical parts junction in the aeropack bottom is 0,5-1,2 m
10. Installation according to p. 1, is characterized by the fact that the length of the lower leg of the aeropack conical part is half of the width of the sediment zone plus 0,1-1,0 m. Height from the bottom of the conical part of the partition, separating the aeration and sediment zone, to the bottom is 0,5-1.5 m and the width of the triangular cushions placed on the flat bottom of the aeration zone is 0,5-2,0 m and a height of 0,5-1,5 m. Sludge removal pipe is installed on the outer perimeter of the aeropack conical part bottom and has holes or nozzles positioned at an angle 0 - 90 degrees to the horizontal axis of the pipeline and at a distance of 0,2-1,0 m from each other.
11. Installation according to p. 1, is characterized by the fact that above the rollers blocks of biological loading are installed. They are made of plastic plates with holes 3-30 mm and bristles 5-50 mm in length or ceramic plates, which include metal compounds, with attached rods or plates of different lengths 5-40 mm and roughness as projections (0,1-1,5 mm).
12. Installation according to p. 1, is characterized by the fact that it consists of two-four units of combined biological treatment, connected to a common mixing chamber by sludge discharge piping from the aeration sediment tanks. Penstock of the circulating pump in the mixing chamber is connected to the biofilters by irrigation devices of combined biological treatment system.
13. Installation for deep biochemical treatment of wastewater containing organic contaminants within BOD up to 3000 mg/dm3, fats-up to 300 mg/dm3, includes biocoagulators-flotators and combined units of biological treatment. It is characterized by the fact that the penstock of the circulation pump installed in the mixing chamber of the second combined device is simultaneously connected to the irrigation system of this very device, to the mixing chamber of the first combined device and water jet aerator of biocoagulator-flotator or to the exceed sludge processing device. It is also characterized by the fact that aerator receiving chamber is equipped with attached aeration column with length 0,3-1,5 m, slope angles to the vertical axis from 0 to 50o and the tangential directing pipes.
14. Installation for deep biochemical treatment of wastewater containing organic contaminants within BOD up to 5000 mg/dm3, hydrogen sulfide and hydrosulfide, ammonia up to 100 mg/dm3, includes the device for mechanical treatment for contaminants concentrations of BOD up to 3000 mg/dm3 and anaerobic bioreactors for contaminants concentrations of BOD up to 50000 mg/dm3, as well as mixing chambers for wastewater and sludge, circulating pumps and combined biological treatment device. This installation is characterized by the fact that supply pipeline is connected to the sewage mixing chamber of the combined biological treatment device, and the penstock of the circulation pump installed in the mixing chamber of the first combined device is connected simultaneously to the irrigation system, as well as a second mixing chamber of combined device.
15. Installation according to p. 14, is characterized by the fact that distribution pipes feeding the circulating fluid are buried at 0,3-2,5 m in anaerobic bioreactor, they are also set at an angle of inclination from 0 to 70o to the vertical axis and are fitted with a tangential directed pipes.
16. Installation according to p. 14, is characterized by the fact that pipelines feeding of hydrogen peroxide are attached to mixing chambers of the first and / or the second combined devices.
17. Installation for deep biochemical treatment of wastewater additionally includes denitrifier and denitrifying mixer is placed on the offsetting pipeline of clarified liquid from the first and / or the second combined device. This denitrifying mixer is connected to discharge lines of circulation pumps of the first and / or the second combined devices as well as the coagulant solution supply pipeline.
18. Installation of deep biochemical treatment of wastewater additionally includes a post-treatment bioreactor with artificial load, which is connected to a drain pipe from the first or second combined device and / or denitrifier.
19. Installation according to p.17, is characterized by the fact that the loading of bioreactor is made of plastic or ceramic sheets, which are attached to rods or plates of a length of 10-100 mm and holes 3-30 mm. The distance between the rods or plates and the diameters of the holes decreases from bottom to top. Sheets, rods or plates have protrusions (0,1-1,5 mm), and material includes the metal compounds.
20. Installation for deep biochemical treatment of wastewater additionally includes a sorption filter with loading. This filter exhibits properties of orthophosphate chemisorption, and is connected to the combined biological treatment device and / or denitrifier and / or bioreactor.
21. Installation for deep biochemical treatment of wastewater additionally includes exceed sludge processing unit, to the thickener of which piping from combined device of biological treatment and / or biocoagulator and / or anaerobic bioreactor is connected. Thickener, in turn, is connected to tape filter press in which the dewatered cake removal device is connected to a granulator, which is also wired to the feeding line (organic and / or mineral supplements). Granula output device is connected to the roller conveyor fitted with electrical heating elements, and / or placed sequentially over the carrier microwave emitters connected, in turn, to the storage capacitor.
22. Installation for deep biochemical treatment of wastewater is characterized by the fact that for it’s capacity of up to 10000 m3/day, it additionally includes used air processing device, air ducts from combined biological treatment devices, exceed sludge processing devices, bioreactors, devices for fine mechanical cleaning and sand catchers, which are successively connected to cellular pocket filter, cellular folded filter and UV installation with ozone-free and ozone forming lamps.
23. Installation for deep biochemical treatment of wastewater is characterized by the fact that for it’s capacity of up to 10000 m3/day, ducts from combined biological treatment devices, exceed sludge processing devices, bioreactors, devices for fine mechanical cleaning and sand catchers are connected to the high-pressure suction pipe of the fan. Pressure air line of the fan is in turn connected to the irrigation chamber of air treatment device, equipped with irrigation system, which is connected to the circulating pump. Suction pipe of circulating pump is connected to a bubbling part of the device, over which packed part of the device is placed, filled with artificial load.
24. Used air processing device is characterized by the fact that the feeding tubes, installed over the surface of the liquid, have a length of 1,2-2,5 m, and are buried at 0,4-0,7 m in liquid of the bubbling part and filled in the bottom by the small diameter pipes. Water-jet air ejection pipes are placed at a height of 0,6-1,8 m above the liquid and are buried in the liquid for 1-3 m.