Rainwater recovery treatment process suitable for landscape architecture

A technology for recycling and processing rainwater. It is applied in the fields of runoff/rainwater treatment, water/sewage treatment, and multi-stage water/sewage treatment. It can solve the problems of long treatment period, troublesome, and difficulty in realizing short-term water purification.

Inactive Publication Date: 2021-09-10
广州华景建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Flocculation and sedimentation treatment requires workers to centrally collect rainwater to a certain amount, then add flocculation agent to the collected rainwater, dissolve the flocculation agent in rainwater and fully stir and mix, wait for the flocculation particles to settle, and then carr

Method used

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  • Rainwater recovery treatment process suitable for landscape architecture
  • Rainwater recovery treatment process suitable for landscape architecture
  • Rainwater recovery treatment process suitable for landscape architecture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The application discloses a treatment pond applied to the rainwater recovery treatment process of garden landscape.

[0047] refer to figure 1 , the treatment tank includes primary settling tank 1, secondary settling tank 4 and shaft 2, the bottom of primary settling tank 1 and secondary settling tank 4 are connected with sewage pipe 5 for extracting sludge, and the top of primary settling tank 1 extends to On the ground, a coarse grid 11 is installed on the top of the primary sedimentation tank 1, and the side wall of the primary sedimentation tank 1 is connected with a drainage pipe 13 and a water flow channel 12 for rainwater overflow. The drainage pipe 13 is higher than the water flow channel 12, and the drainage pipe 13 is connected The municipal drainage pipe network is connected. When the rainfall is large, it can be drained through the drainage pipe 13 to control the rainwater flow of the water channel 12. The shaft 2 is connected with the water channel 12. The ...

Embodiment 2

[0068] The difference from Example 1 is that the preparation method of the flocculation agent 36 in Example 2 includes the following steps:

[0069] S1. Mix 0.5kg of ethyl cellulose, 0.3kg of diacetone acrylamide, 0.15kg of xylan, and 2L of water, raise the temperature to 90°C, add 25mL of initiator dropwise, mix at constant temperature for 2 hours, and filter to obtain a solid And dry to constant weight, obtain cellulose polymer;

[0070] S2. Mix 0.2kg of polyaluminum chloride, 0.07kg of polylysine and 100mL of water to form a mixed wet powder, extrude and granulate the mixed wet powder into 60-mesh particles, and dry at 100±10°C to constant weight;

[0071] S3. Sieve all the dried particles obtained in S2 into 60-mesh sieves, dissolve 0.13kg of cellulose polymer in 100mL of 85% ethanol, and then coat the sieves. Dry at 10°C to constant weight to obtain coated granules;

[0072] S4. Mix all the coated granules prepared in S3, 0.05kg of wax, 0.3kg of diatomaceous earth, 0.1...

Embodiment 3-4

[0075] The difference from Example 1 is that the dosage of each component of the flocculation agent in Examples 3-4 is shown in Table 2.

[0076] See Table 2 (unit: kg) for the dosage of each component of the flocculation agents in Examples 1-4.

[0077] Table 2

[0078]

[0079]

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PUM

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Abstract

The invention relates to a rainwater recovery treatment process suitable for landscape architecture, and belongs to the field of rainwater treatment. The process comprises the following steps: a, collecting rainwater for preliminary filtration; b, enabling the rainwater to flow into a primary sedimentation tank for primary sedimentation after being preliminarily filtered; c, overflowing rainwater supernate of the primary sedimentation tank to a secondary sedimentation tank, flowing through a rainwater treatment device filled with a flocculating agent, and performing flocculating sedimentation in the secondary sedimentation tank; d, pumping supernate of the secondary sedimentation tank for recycling; and e, regularly taking out and replacing the flocculating agent in the rainwater treatment device; wherein the side wall of the primary sedimentation tank is provided with a water flowing channel allowing rainwater to overflow, one end, away from the primary sedimentation tank, of the water flowing channel is communicated with a vertical shaft extending to the ground, the bottom end of the vertical shaft is communicated with the secondary sedimentation tank, and the rainwater treatment device is arranged at the vertical shaft. According to the treatment process, the rainwater can be better subjected to flocculent precipitation to be recycled, a worker only needs to replace a flocculation agent regularly, and good practicability and economic benefits are achieved.

Description

technical field [0001] The invention relates to the field of rainwater treatment, in particular to a rainwater recovery treatment process suitable for garden landscapes. Background technique [0002] Rainwater recycling refers to the collection of rainfall and the purification of the collected rainwater, so that the rainwater can be recycled for landscaping irrigation, road dust removal, etc., so as to alleviate the urban water shortage. [0003] Due to the low degree of pollution of rainwater, the purification steps of rainwater recycling generally include filtration, flocculation and other means, and the suspended particulate impurities of rainwater can be effectively removed in flocculation and sedimentation. [0004] Flocculation and sedimentation treatment requires workers to centrally collect rainwater to a certain amount, then add flocculation agent to the collected rainwater, dissolve the flocculation agent in rainwater and fully stir and mix, wait for the flocculati...

Claims

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Application Information

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IPC IPC(8): C02F9/04E03F3/04E03F5/10E03F5/14C02F1/52
CPCC02F9/00C02F1/52C02F1/5281E03F5/10E03F5/14E03F3/04C02F1/5236C02F1/5263C02F1/56C02F1/54C02F2001/007C02F1/001C02F2103/001
Inventor 许淑芬王宋双黎继焰余伦家郑泳浩
Owner 广州华景建设有限公司
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