Urban runoff non-point source pollution advanced treatment and reuse technology

A technology for advanced treatment and non-point source pollution, applied in biological water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of large area, single method, and limited pollutant treatment effect , to achieve the effect of moderate floor area, tight combination and flexible layout

Inactive Publication Date: 2016-04-06
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of technology has a single treatment method and low treatment efficiency, so the effect on the treatment of various pollutants is limited.
Chinese patent 201210210495.1 discloses "point-line-plane three-dimensional configuration based on non-point source pollution control technology", the dyeing treatment process can adapt to the instability of non-point source pollution in rural areas, and can adapt to local conditions, but it occupies a large area and the system is complicated. Not suitable for dealing with urban non-point source pollution
Chinese patent 201410743613.4 discloses "a system and method for purifying water area non-point source pollution". Although this process optimizes and improves each unit process of non-point source pollution control, the primary and advanced treatment only rely on physical purification, the method is single, and is limited by the amount of water inflow. The impact is difficult to ensure sufficient hydraulic retention time, and it is impossible to realize all-round water environment governance

Method used

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  • Urban runoff non-point source pollution advanced treatment and reuse technology

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Embodiment 1

[0024] Utilize above-mentioned method to purify urban runoff sewage. The size of the system is: (1) urban green space: length × width × height = 200m × 40m × 15-30cm, (2) ecological gravel bed: length × width × height = 200m × 50m × 20-30cm (3) wetland: Length × width × height = 200m × 80m × 30-80cm, (4) High-quality water self-purification landscape pond: length × width × height = 200cm × 300cm × 120-300cm.

[0025] The influent COD concentration is 20-100mg / L, TP concentration is 0.3-1.2mg / L, TN concentration is 1.9-6.8mg / L, ammonia nitrogen concentration is 1.2-5.8mg / L, temperature is 26.3-28.7℃, hydraulic The load is 0.21m 3 / m 2 Under the condition of / d, the average removal rates of COD, TP, TN and ammonia nitrogen by the area source system are 65.33%, 54.68%, 43.99%, 38.05%, respectively.

Embodiment 2

[0027] Utilize above-mentioned method to purify urban runoff sewage. The size of the system is: (1) urban green space: length × width × height = 300m × 50m × 25-47cm, (2) ecological gravel bed: length × width × height = 300m × 70m × 30-60cm (3) wetland: Length × width × height = 300m × 90m × 40-90cm, (4) High-quality water self-purification landscape pond: length × width × height = 400cm × 300cm × 150-400cm.

[0028] The influent COD concentration is 100-300mg / L, TP concentration is 1.6-3.4mg / L, TN concentration is 3.3-23.2mg / L, ammonia nitrogen concentration is 0.9-22.7mg / L, temperature is 23.5-25.6℃, hydraulic The load is 0.12m 3 / m 2 Under the condition of / d, the average removal rates of COD, TP, TN and ammonia nitrogen by the area source system were 89.79%, 49.96%, 70.02% and 49.05%, respectively.

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Abstract

The invention relates to an urban runoff non-point source pollution advanced treatment and reuse technology. According to the technology, an urban runoff collecting system, a treatment system and a storing and recycling system are included; the urban runoff collecting system comprises a roadside water permeation plant zone and permeating type urban green land which are used for collecting and initially purifying an urban non-point source; the treatment system comprises an ecology gravel bed and wet land which are used for further removing pollutants such as heavy metal, nitrogen and phosphorus in the urban non-point source; the storing system comprises a high-quality water self-purification landscape pond which can achieve deep purification on an urban runoff, have the landscape effect and supply high-quality reclaimed water to urban landscaping and watering, underground water supplementing and the like. Accordingly, the technology which can efficiently remove various kinds of the pollutants in the urban non-point source runoff and produce and reuse the high-quality reclaimed water is supplied through optimization and improvement of all the units for urban runoff non-point source pollution.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an advanced treatment and recycling process of urban runoff non-point source pollution. Background technique [0002] Non-point source pollution has become one of the important sources of water environment pollution at home and abroad. With the effective control of urban industrial wastewater and domestic sewage discharge in my country, non-point source pollution with urban road runoff, livestock and poultry breeding manure and rural domestic garbage as the main source of pollution has gradually been paid attention to. Due to the scattered source of non-point source pollution, difficult identification of generation location, strong accidental and large impact load, traditional centralized sewage treatment technology is difficult to be used for non-point source pollution prevention and control. The existing non-point source pollution treatment processes mainl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F101/16C02F101/20
CPCC02F3/32C02F3/34C02F2101/16C02F2101/20Y02W10/10
Inventor 彭剑峰颜秉斐宋永会姜诗慧李浩
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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