A two-stage desert sand filter and its wastewater treatment method

A technology for wastewater treatment and sand filter, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high cost, difficult loading and unloading of packing, complicated maintenance, etc. The effect of operating costs, reducing capital investment costs, and low cost

Active Publication Date: 2016-01-27
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of difficult filler loading and unloading, high cost and complicated maintenance in the filtration treatment of wastewater after coagulation and sedimentation in the prior art, the present invention provides a two-stage desert sand filter and its wastewater treatment method. The device and process Easy to operate, stable operation, economical and practical

Method used

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  • A two-stage desert sand filter and its wastewater treatment method
  • A two-stage desert sand filter and its wastewater treatment method
  • A two-stage desert sand filter and its wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 , 2 , a two-stage desert sand filter, which includes a regulating pool 1, a first-level desert sand filter 2, a first-level water storage tank 3, a second-level desert sand filter 4, a second-level water storage tank 5 and a third-level water storage tank 6 connected in sequence ; The bottom of the adjustment pool 1 is provided with a water absorption bell mouth 10 connected to the lifting pipeline 7, and the lifting pipeline 7 lifts the waste water to the first-level desert sand filter tank 2 through the lifting pump 8; the first-level desert sand filter tank 2 is provided with a filter material 14 and filter column 9; the structure of the primary storage tank 3 is the same as that of the regulating tank 1, the structure of the secondary desert sand filter 4 is the same as that of the desert sand filter 2, and the bottom of the primary storage tank 3 is provided with a connection with the lifting pipe 7 The water-absorbing bell mouth 10, the lifting p...

Embodiment 2

[0049] In this embodiment, based on the two-stage desert sand filter in the above-mentioned embodiment 1, the following effluents are treated for wastewater. A degreasing phosphating wastewater (COD: 160-180mg / L, phosphate (calculated as P): 84-108mg / L, pH value: 4.2-5.1, petroleum: 163-215mg / L, Zn + : 35-40mg / L) After chemical precipitation, flocculation and air flotation, the effluent water quality is COD: 72-81mg / L, phosphate (calculated as P): 6.6-10.8mg / L, pH value: 4.9-5.8, petroleum Class: 12-23mg / L, Zn + : 4.7-6.2mg / L,

[0050] This embodiment is based on the wastewater treatment method of the above-mentioned embodiment 1, and the basic operating parameters: the daily treatment water volume Q is 3000m 3 / d; filter material layer height H 1 1.1m (1.0≤H 1 ≤1.5m); water depth H on the sand surface 2 is 1.5 (1.0≤H 2 ≤1.5m); super high H 3 0.6m (0.6≤H 3 ≤0.8m); wall thickness H 4 is 0.2(0.2≤H 4 ≤0.3m); the height of the water channel H 5 is 0.5 (0.4≤H 5 ≤0.8); w...

Embodiment 3

[0053] In this embodiment, based on the two-stage desert sand filter in the above-mentioned embodiment 1, the following effluents are treated for wastewater. A printing and dyeing wastewater (COD Cr : 1150-1250mg / L, BOD 5 : 210-260mg / L, chromaticity: 400-500 times, pH value: 9.2-11.6, SS: 1800-2200) after suspending and attaching biological anaerobic-aerobic-micro-flocculation treatment, the effluent water quality is COD Cr : 150-360mg / L, BOD 5 : 70-80mg / L, chromaticity: 100-140 times, pH value: 8.5-9.4, SS: 200-400,

[0054] This embodiment is based on the wastewater treatment method of the above-mentioned embodiment 1, and the basic operating parameters: the daily treatment water volume Q is 3000m 3 / d; filter material layer height H 1 1.5m (1.0≤H 1 ≤1.5m); water depth H on the sand surface 2 1.1m (1.0≤H 2 ≤1.5m); super high H 3 0.8m (0.6≤H 3 ≤0.8m); wall thickness H 4 is 0.3(0.2≤H 4 ≤0.3m); the height of the water channel H 5 is 0.8 (0.4≤H 5 ≤0.8); water backwa...

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Abstract

The invention discloses a two-stage desert sand filter and a wastewater treatment method thereof, belonging to the technical field of water pollution control. The two-stage desert sand filter comprises a regulating tank, a primary desert sand filter tank, a primary water storage tank, a two-level desert sand filter tank, a two-level water storage tank and a three-level water storage tank, which are sequentially connected, wherein a horn-shaped water absorption opening connected with a lifting pipeline is arranged at the bottom of the regulating tank, the lifting pipeline elevates wastewater to the primary desert sand filter tank by a lifting pump, a filter material and a filter column are arranged in the primary desert sand filter tank, the structure of the primary water storage tank is the same as that of the regulating tank, the structure of the two-level desert sand filter tank is the same as that of the primary desert sand filter tank, a horn-shaped water absorption opening connected with a lifting pipeline is arranged at the bottom of the primary water storage tank, the lifting pipeline elevates wastewater to the two-level desert sand filter tank by a lifting pump, the wastewater enters the two-level water storage tank after being filtered by the two-level desert sand filter tank, a horn-shaped water absorption opening connected with a lifting pipeline is arranged at the bottom of the two-level water storage tank, and the lifting pipeline elevates wastewater to the three-level water storage tank by a lifting pump. The process is simple and convenient to operate, has stability in running and is economic and practical.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and more specifically relates to a two-stage desert sand filter and a wastewater treatment method thereof. Background technique [0002] In recent years, with the development of the economy, the pollution of chemical wastewater to the environment has become more and more serious. Most of the pollutants discharged during the production of chemical products are organic pollutants with complex structures, toxic and harmful, and biodegradable, which are difficult to treat. According to the principle of action, modern chemical wastewater treatment technology can be divided into four categories: physical method, chemical method, physical chemical method and biological method. Coagulation sedimentation method is a method of purifying industrial wastewater by using coagulant. The wastewater after coagulation and sedimentation also contains suspended solids and colloids of smaller particl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00
Inventor 高吉喜张后虎彭禹蔡邦成
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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