Method and device for comprehensively purifying runoff rainwater

A purification system and rainwater collection technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of complex maintenance and management, low purification efficiency, and high engineering cost, and achieve Simple maintenance and management, easy maintenance, and the effect of saving project area

CN102381805BActive Publication Date: 2013-04-03CHINA ACAD OF TRANSPORTATION SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-04-03

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Abstract

The invention discloses a method and device for comprehensively purifying runoff rainwater. The runoff rainwater is collected by a collecting system and is introduced into a storing and regulating pool after being subjected to large-particle impurity removal through a grate. The runoff rainwater is subjected to water quantity regulation, water quality homogenization and primary sedimentation by the storing and regulating pool and then is introduced into a runoff rainwater purifying pool. A water inlet of the runoff rainwater purifying pool is provided with a vertical water distribution port so as to guarantee a system baffling function. A vertical baffling retaining wall is arranged downwards from the top of the purifying pool at a set distance from the water inlet of the purifying pool in a horizontal direction, and an integral baffling plate in 45-degree included angle with the retaining wall is fabricated at the bottom of the retaining wall. An oil collecting pool is arranged at the inner side of the retaining wall, a group of conical ports is arranged in the middle of the oil collecting pool in design and is used for guaranteeing the oil isolation function of the oil collecting pool. A pebble retaining wall with certain height is arranged upwards from the bottom of the purifying pool at a certain distance from an overflow gate. Slopes with certain gradient are respectivelyarranged at the bottoms of the purifying pool before and behind the pebble retaining wall, and sand collecting grooves are respectively arranged at low concave parts of the two slopes. Emptying pipesare respectively arranged at parts with certain heights at the left side and the right side of the pebble retaining wall, and are provided with valves for control.
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Description

technical field

[0001] The method and device proposed by the present invention can be used for bridge deck runoff treatment across sensitive water bodies and emergency response to hazardous chemical leakage accidents, water quality purification of road surface runoff near drinking water source protection areas, and construction waste water and primary rainwater water quality characteristics Similar sewage purification treatment and other fields. Background technique

[0002] In addition to heavy metals, hydrocarbons and other pollutants that are harmful to the environment in the road runoff formed by precipitation, most of the pollutants in the exhaust gas of automobiles will eventually migrate to the water environment under the action of natural sedimentation or rainwater leaching , resulting in water pollution.

[0003] When the road is close to the water source protection area, drinking water source and aquaculture water body, the road surface runoff formed by rainwater ...

Examples

Embodiment Construction

[0037] The invention provides a method and device for comprehensive purification treatment of rainwater runoff such as oil separation, sedimentation and biodegradation.

[0038] The rainwater runoff is collected by the rainwater collection pipe 3, enters the grid 4 to remove large particles, and then enters the storage adjustment tank 1 of the purification system. After the storage adjustment pool 1 has adjusted the water volume, uniform water quality and preliminary precipitation, it enters the runoff purification pool 2 through the control of the electric control valve 5 .

[0039] The internal water distribution port 7 of the runoff purification tank 2 is made of a vertical carbon steel anti-corrosion elbow to ensure the deflection direction of the incoming water and improve the uniformity of the water quality distribution of the incoming water.

[0040] At 4-8 meters away from the runoff purification tank 2 water inlets 6 in the horizontal direction, build a steel-concrete...