RU143295U1 - STRUCTURE FOR PURIFICATION OF HEAVYLY CONTAMINATED SHOWER AND PRODUCTION WASTE WATERS - Google Patents

Abstract

A facility for the treatment of heavily contaminated storm and industrial wastewater, including storm water inlets, an accumulation tank, a treatment device including filters, rainwater for conditionally clean water, a device for thickening and dewatering the precipitates, an ultraviolet treatment device, characterized in that it is additionally equipped with an inlet storage tank, a reagent dosing unit, comprising at least one dosing pump, at least one reagent tank and at least at least one reagent dosing line, and the storage tank is divided by wall partitions into adjacent sections, at least one of which is the primary sedimentation section, at least one of which is the main sedimentation section, at least one of which is a clarified water section and at least one of which is an additional reagent treatment section, and the additional reagent processing section directly communicates with the main sedimentation section through at least one automatically controlled valve operating in a batch mode inserted in the intersection wall wall, and the additional reagent treatment section is equipped with a transfer pump with the possibility of supplying the cleaned liquid to the treatment device or returning the cleaned liquid back to the additional reagent processing section; The cleaning device includes filters, at least one of which is made in the form of an automatic filter for mechanical cleaning, preferably a mesh filter, according to

Description

The utility model relates to devices for the treatment of storm and industrial wastewater and can be used at industrial enterprises, including coal ports.

A well-known complex for purification of domestic wastewater by sedimentation, (PM patent No. 127067 dated 09/06/2012 (RU)), including a water distribution tank, four parallel working sumps, a piping system, effective means of supplying sewage sumps and clarified water outlet, as well as elements that provide the ability to automatically control the cleaning process with a constant output rate of clarified water. A disadvantage of the utility model is the low degree of water purification due to incomplete removal of suspended particles from stable suspensions during sedimentation.

A well-known station for the treatment of storm water in the conditions of Sochi (IM No. 128634 dated 08/15/2012 RU), taken as a prototype, including storm water inlets, storm water collectors, sewage reservoirs that regulate the flow rates of sewage, rainwater discharge of conditionally clean storm water, sewage treatment plant a device equipped with a thin-layer sedimentation tank, reagent farm, sorption filters, ultraviolet irradiated water treatment plants, sediment compactors and dewatering and decontaminating sludge devices, while storm water is treated in series Initially without reagent addition in storage tanks, then in thin-layer sedimentation tanks after the introduction of an exceptionally high molecular weight positively charged flocculant followed by purification of water in a ruff filter, bag filters, the compacted sediments are dehydrated in bag-based dehydrators that use bags repeatedly.

The disadvantage of the prototype is the low degree of purification of heavily contaminated storm and sewage. The insufficient degree of purification is due to the fact that during the purification process, the contact time of contaminated water with the reagent is not enough for efficient flock formation, which leads to incomplete removal of suspended particles.

The technical result of the development of the proposed utility model is to increase the degree of purification of heavily contaminated storm and industrial wastewater, in particular, storm water from coal ports, increase efficiency and improve the environmental situation.

The technical result is achieved by the fact that the facility for the treatment of heavily contaminated storm and industrial wastewater, including storm water inlets, an accumulation tank, a purification device including filters, rainwater purification of conditionally clean water, a device for thickening and dewatering high rainfall, an ultraviolet treatment device is additionally provided at the entrance to storage tank, a reagent dosing unit, comprising at least one dosing pump, at least one reagent tank, and at least one reagent dosing line and supplying the reagent directly to the notes of heavily contaminated storm water, and the storage tank is divided by wall partitions into adjacent sections, but at least one of which is the primary sedimentation section, but at least one of which is the main sedimentation section, but at least one of which is a clarified water section and at least one of which is an additional reagent treatment section, flax reagent processing directly communicates with the main sedimentation section through at least one automatically controlled valve operating in a batch mode made in the intersection wall partition to ensure a portioned supply of the liquid to be purified from the main sedimentation section to the additional reagent treatment section, while the additional reagent treatment section equipped with a transfer pump with the ability to supply cleaned liquid to the treatment device or return chischaemoy fluid back to the section for additional reagent treatment stirring; the cleaning device includes filters, at least one of which is made in the form of an automatic filter of mechanical cleaning, preferably a mesh filter, at least one of which is made in the form of a filter with sorption loading, and the number of filters is selected in accordance with the required capacity of the structure, while filters arranged so as to provide filtration of the incoming water in series, first on the filter of mechanical cleaning, then on the filter with sorption loading.

In the drawing, figure 1 is a circuit diagram, where

1. Storm receivers;

2. The feed pump;

3. Pressure pipeline;

4. Dosing pump;

5.1; 5.2; 5.3 Dosing lines;

6. Storage tank;

6.1 Section of primary sedimentation;

6.2 Section of the main sedimentation;

6.3.1 and 6.3.2 sections for additional reagent treatment;

6.4 clarified water section;

7.1 and 7.2 feed pumps;

8.1 and 8.2 Feeding lines;

8.1.1 and 8.2.1 Return lines of the cleaned liquid;

8.1A; 8.1B; 8.2A; 8.2B Automatically controlled gate valves;

9.1 and 9.2 Automatic strainers;

10.1 and 10.2 discharge lines of clarified water;

11.1 11.2 11.3 Wash water discharge lines;

12.1 and 12.2 Automatically controlled gate valves;

13. The feed pump;

14. The supply line of clarified water to the quick filter block;

15. Block quick filters;

16. The feed line to the Ural Processing;

17. Block UV processing;

18. The outlet line of purified water;

19. Slurry pump;

20. Slurry feed line;

21. The dehydration device;

22. The line of discharge of the separated water;

23. Rainfall of conditionally pure waters;

24. Automatic control unit.

The essence of the utility model is as follows. The facility for the treatment of heavily contaminated storm sewage includes storm water inlets 1, the selection of the liquid to be cleaned is made by the feed pump 2 and fed into the pressure pipe 3, which is connected to the storage tank 6. Between the feed pump 2 and the inlet to the storage tank 6, the installation 3 is connected to the pipe 3 dosing of the reagent, including dosing pump 4 and reagent dosing lines 5.1, 5.2, 5.3, equipped with reagent flow sensors. The storage tank consists of adjoining primary sedimentation sections 6.1, main sedimentation sections 6.2, clarified water sections 6.4 and additional reagent treatment sections 6.3.1 and 6.3.2., And the main sedimentation section equipped with a conditional clear storm water 23 for discharge of water at section overflow. Additional reagent treatment sections 6.3.1 and 6.3.2 communicate directly with the main sedimentation section 6.2 through automatically controlled valves 12.1 and 12.2 made in the wall partitions. In the sections of the additional reagent treatment 6.3.1 and 6.3.2, submersible feed pumps 7.1 and 7.2 are installed, which are connected to the automatic strainers 9.1 and 9.2 through the feed lines 8.1 and 8.2. The return lines of the cleaned liquid 8.1.1 and 8.2.1 are connected to the lines 8.1 and 8.2, and the supply lines 8.1 and 8.2 and the return lines 8.1.1 and 8.2.1 are equipped with automatically controlled valves 8.1A, 8.2A and 8.1B, 8.2B for redirecting the flow of the liquid being cleaned from filtration to returning back to the sections of additional reagent treatment 6.3.1 and 6.3.2. Filters 9.1 and 9.2 are connected to the clarified water section by the clarified water discharge lines 10.1 and 10.2 and to the primary sedimentation section by the washing water discharge lines 11.1 and 11.2. In the clarified water section 6.4, a submersible pump 13 is installed, which takes water and supplies it for filtration to the quick filter block 15 along the supply line 14. The quick filter block 15 is a group of quick filters connected in parallel and having a common input collector connected to the supply line 14, a common output collector connected to the supply line to the Ural federal district processing 16 and a wash water collector, which through the discharge line of the wash water 11.3 is connected to the pre-sedimentation section 6.1. Ultraviolet and connected to the outlet line of treated water 18, through which clean water flows in natural waterbody. Sludge formed in the bottom layer of section 6.2 is removed by turning on slurry pumps 19, which supply sludge water through the sludge supply line 20 to dewatering device 21, which can be used with a belt press filter. Separated water is sent through line 22 to the pre-settling section 6.1. A dehydrated sludge with a water content of 50% is collected in technological containers (for example, pallets, big bags) for subsequent disposal. Automatically controlled valves, pumps and filter control units are connected to the automatic control unit 24.

The system operates as follows. Heavily contaminated storm water enters the storm water inlets 1, from where it is pumped into the pressure pipe 3 by the feed pump 2. At the moment of the storm water supply, the proportional dosing of the reagent solution by the metering pump 4 via line 5.1 is made by the flow sensor signal. The treated reagent water enters from the pipeline 3 to the inlet of the storage tank 6, where in the primary sedimentation section 6.1 the flow is equalized and the heavily contaminated storm water is finally mixed with the reagent solution. Water through a series of holes in the partition wall is poured from the primary sedimentation section 6.1 into the main sedimentation section 6.2, where the flocculent sediment formed by the suspension of particles and reagent suspended in water settles. The clarified water from the main sedimentation section 6.2 enters the tanks for additional reagent treatment 6.3.1 and 6.3.2. through the holes in the intersection wall partitions at a time when the automatically controlled valves 12.1 and 12.2 are in the "open" position. Given the filling of the additional reagent treatment sections 6.3.1 and 6.3.2 for a given signal from the level sensors, the automatically controlled valves 12.1 and 12.2 move to the “closed” position, thereby blocking the flow of purified water from the main sedimentation section 6.2. After closing the valves 12.1 and 12.2, the submersible pumps 7.1 and 7.2 are turned on and the water supplied to the section is pumped along the return lines 8.1.1 and 8.2.1 to intensively mix the water in the sections, while the automatically controlled valves 8.1A and 8.2A go to the “closed” position ", And the valves 8.1B and 8.2B go into the" open "position. At the same time that the pumps 7.1 and 7.2 are turned on, the reagent is dosed in sections 6.3.1 and 6.3.2 along lines 5.2 and 5.3. After the set time interval has elapsed, the gate valves switch from the “closed” - “open” position to the “open” - “closed” position and the purified water from sections 6.3.1 and 6.3.2 starts to enter the inlet strainers 9.1 and 9.2. Filtered water flows along the lines of discharge of clarified water 10.1 and 10.2 into the clarified water section 6.4. Upon reaching the set level in section 6.4, a submersible pump 13 is turned on, which pumps water from section 6.4 and delivers it to the filter block with sorption charge 15 along line 14. Filtered water enters through block 16 for ultraviolet treatment to block 17. After passage of ultraviolet radiation, purified water but line 18 is discharged into an external water body (for example, fruit drink, river). During the operation of the filters, the filter surfaces become clogged, which leads to an increase in hydraulic resistance. Upon reaching the critical value, the filters are automatically washed, while the washing water is discharged along lines 11.2, 11.1 11.3 and enters the pre-settling section 6.1. As the main sedimentation section 6.2 accumulates in the bottom layer of a significant amount of flocculent sludge, sludge pumps 19 are turned on, but the lines 20 pump the sludge to the dewatering device 21 (for example, a belt press filter). During dehydration, the separated water returns via line 22 to the pre-settling section 6.1. Emergency water discharge during overflow of the main sedimentation section 6.2 is carried out through a storm 23.

Examples of using the utility model:

The construction of the application was operated in a coal port with open storage of coal on the site. The storm water of the facility is characterized by a very high content of coal dust and other pollutants. During the operation of the treatment plant, the content of pollutants was analyzed at various stages of treatment. The results are presented in Table 1.

Type of pollution The content in water, mg / DM ³ At the entrance of the structure After settling in the main sedimentation tank After secondary reagent treatment and filtration (clarified water) After filtering on quick filters Suspended matter 2000-5000 150 5 3 Iron is common 3.4 1.7 0.3 0.1 Oil products 5.5 0.8 0.1 <0.05 Phenols 0.7 0.2 0.04 <0.001

Water that has undergone a full treatment cycle meets the regulatory requirements for discharge into a fishery pond.

Claims (1)

A facility for the treatment of heavily contaminated storm and industrial wastewater, including storm water inlets, an accumulation tank, a treatment device including filters, rainwater for conditionally clean water, a device for thickening and dewatering the precipitates, an ultraviolet treatment device, characterized in that it is additionally equipped with an inlet storage tank, a reagent dosing unit, comprising at least one dosing pump, at least one reagent tank and at least at least one reagent dosing line, and the storage tank is divided by wall partitions into adjacent sections, at least one of which is the primary sedimentation section, at least one of which is the main sedimentation section, at least one of which is a clarified water section and at least one of which is an additional reagent treatment section, and the additional reagent processing section directly communicates with the main sedimentation section through at least one automatically controlled valve operating in the intermittent wall partition that operates in a periodic mode, while the additional reagent treatment section is equipped with a transfer pump with the ability to supply the cleaned liquid to the treatment device or return the cleaned liquid back to the additional reagent processing section; the cleaning device includes filters, at least one of which is made in the form of an automatic filter of mechanical cleaning, preferably a mesh filter, at least one of which is made in the form of a filter with sorption loading, and the number of filters is selected in accordance with the required capacity of the structure, while filters arranged in such a way as to ensure the filtration of the incoming water sequentially, first on the filter of mechanical cleaning, then on the filter with sorption loading.