RU2153045C1 - Storm-sewer system - Google Patents

Abstract

FIELD: protection of waters, in particular, prevention of pollution of water basin by storm-waters discharged from urban territory. SUBSTANCE: storm-sewer system has catch-pits, industrial sewage and domestic waste conduit, and a conduit for discharge of storm-waters to water basin, provided with a reservoir for sewage purification divided into inlet, overflow and settling chambers and a chamber for collection of oil products; the settling chamber is connected to the industrial sewage and domestic waste conduit through a sludge pipeline; the system comprises also a lateral saw-tooth shaped spillway separating the inlet chamber from the settling one; the chamber for collection of oil products is provided with a float gate at the inlet and well water outlet at the outlet from the chamber; the system is supplemented with a filtering stone prism installed at the reservoir outlet. EFFECT: simplified design and enhanced quality of sewage purification. 5 dwg

Description

 The invention relates to the protection of water, in particular the prevention of pollution of the water basin by rainwater discharged from the city territory.

 During precipitation, rainwater is washed off the surface of the coatings and carried into a water body a significant amount of garbage, products of the destruction of coatings and soil, settled emissions into the atmosphere from automobile transport, industrial production, and petroleum products. The entry of these substances into water bodies leads to their clogging, deterioration of the oxygen regime and organoleptic characteristics of water.

 A device is known for separating liquid into light and heavy fractions (a. From. Germany 2848629, class E 03 F 5/16, 1980), containing partitions dividing it into chambers for deposition of solid fractions and collection on the surface of light fractions with subsequent removal them outside the device.

 A disadvantage of the known device is that it cannot be used for wastewater treatment due to the lack of clean water output.

 Closest to the proposed technological essence is a rainwater drainage system (AS USSR N 1142607, class E 03 F 5/10, 1983), containing storm water inlets, a sewage collector and a collector for draining rainwater into a reservoir equipped with a reservoir for cleaning streams containing vertical partitions dividing it into a receiving, overflow and settling chamber, while the settling chamber is connected to a sewage collector by a slurry pipeline.

 A disadvantage of the known system is the cyclical nature of the work, as a result of which the structure is large. In addition, not all rainwater passes through the water treatment tank, which makes it possible to carry pollutants into water bodies. The operation of the structure is complicated by the presence of valves, floats, levers, etc. In addition, part of the rainfall containing oil products, after filling the inlet chamber, can be discharged without treatment into a reservoir.

 The technical solution to the problem is to simplify the design and improve the quality of wastewater treatment.

 The objective is achieved by the fact that the rainwater drainage system, including storm water wells, a sewage collector and a collector of rainwater drainage into a reservoir, a sewage treatment tank, divided into a receiving, overflow, settling chamber and a chamber for collecting oil products, while the settling chamber is connected to the collector industrial sewage system by a slurry pipeline, characterized in that it has a lateral sawtooth spillway separating the receiving chamber from the settling chamber, and the chamber for collecting oil products is equipped with a float Shutter inlet and silo overflow outlet from the chamber, the system comprising a filter stone prism mounted at the outlet from the tank for cleaning.

 The novelty of the proposed proposal is due to the fact that the sawtooth spillway provides energy suppression and even distribution of the water flow in the settling chamber, the float valve allows water layers containing oil products to be passed into the chamber for collecting oil products, and maintains a water level at the inlet of the chamber of 4 mm, which prevents removal oil products through a mine outlet, which in turn ensures the passage of settled water without oil from the chamber for collecting oil into the overflow chamber, filtering The variable prism prevents the erosion of the channel of the reservoir by discharged waste water and acts as a filter, which increases the degree of purification of the structure as a whole.

 According to the patent and scientific and technical literature, no similar technical solution was found, which allows us to judge the inventive step of the proposal.

 The invention is illustrated by drawings, where in FIG. 1 is a perspective view of a rainwater drainage system; FIG. 2 is a section AA in FIG. 1 (cross section of the reservoir and filter stone prism), FIG. 3 - a tank for wastewater treatment, in FIG. 4 is a section BB of FIG. 3 (a chamber for collecting oil products), in FIG. 5 is a section CC of FIG. 3 (chamber for collecting suspended solids).

 The rainwater drainage system includes rainwater wells 1 located on the catchment area, a sewage collector 2 and a rainwater drainage collector 3 from rainwater wells 1, which are in communication with a sewage treatment tank 4, at the outlet of which there is a filtering stone prism 5.

 The reservoir 4 contains a lateral sawtooth spillway 6, which divides it into a receiving 7 and settling chamber 8. The tank 4 also contains a vertical wall 9, which separates the overflow chamber 10. The settling chamber 8 contains a vertical partition 11, which separates the chamber for collecting suspended solids 12.

 The tank 4 also contains a chamber for collecting oil products 13, equipped with a float valve 14 and a shaft outlet 15.

 The receiving chamber 7 contains an overflow hole 16 for passing the maximum flow rate of water into the overflow chamber 10, which contains a perforated wall 17.

 The bottom of the settling chamber 8 is made with a slope towards the sludge pit formed at the bottom of the suspended solids collection chamber 12, to which a slurry pipe 18 having a valve 19 is connected, with a slurry pipe 18 connected to the inspection well 20 of the sewage collector 2 at the other end.

 The tank for wastewater treatment 4 is blocked from above by plates, some of the plates are equipped with removable airtight hatches.

 The rain sewage system operates as follows.

 During precipitation, rainwater flowing from the catchment area flows into the rainwater collection wells 1 and from them through the pipelines enter the collector 3 of the rainwater drainage system, through which sewage flows through the inspection well 21 through two pipelines to the sewage treatment tank 4.

 Untreated water enters the receiving chamber 7, in which there is a transition of the water flow from a turbulent to a calm state. From the receiving chamber 7 through the lateral sawtooth spillway 6, the water overflows into the settling chamber 8, in which the suspension occurs. Oil products that have surfaced on the surface of the settling chamber 8 are fed by gravity to the chamber for collecting oil products 13 through the float valve 14, which maintains a constant water level in the spillway - 4 mm. From chamber 13, settled water without oil products through a mine outlet 15 enters the overflow chamber 10.

 At the end of the settling chamber 8, a vertical wall 11 is provided, which delays the removal of oil products, and water from below flows into the chamber for collecting suspended solids 12, which contains a pit. From the chamber 12 through the vertical wall 9, the purified water enters the overflow chamber 10. Next, the water in transit through the perforated wall 17 and the filtering stone prism 5 enters the reservoir 22.

 The proposed rainwater drainage system will significantly reduce the amount of contaminated substances entering the Black Sea, and especially in the area of recreational wave-extinguishing beaches.

Claims (1)

 A rainwater drainage system, including sewage wells, a sewage collector and a collector of rainwater into a reservoir, a sewage treatment tank divided into a receiving, overflow, settling chamber and a collection chamber for oil products, while the settling chamber is connected to a sewage collector by a slurry pipeline, characterized in that the system has a lateral sawtooth spillway separating the receiving chamber from the settling chamber, and the chamber for collecting oil products is equipped with a float shutter at the entrance and silo overflow outlet from the chamber, the system comprising a filter stone prism mounted at the outlet from the tank for cleaning.

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