Domestic sewage treatment method

A technology for domestic sewage and treatment methods, which is applied in the directions of biological water/sewage treatment, water/sewage treatment, light water/sewage treatment, etc. Oxygen content drops and other problems, to achieve good dispersion performance, not easy to agglomerate, efficient removal effect

Pending Publication Date: 2020-02-21
HEFEI ZHENGJIE INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The eutrophication of the water body will not only lead to the overgrowth of algae in the water, but also cause a sharp drop in the oxygen content of the water body, affecting the survival of aquatic organisms such as fish
[0005] However, the existing domestic sewage treatment methods are difficult to efficiently remove phosphorus components and surfactants in wastewater, so there is an urgent need for a domestic sewage treatment method that efficiently removes phosphorus and surfactants

Method used

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Embodiment 1

[0041] A method for treating domestic sewage, comprising the steps of:

[0042] Step 1, the domestic sewage is introduced into the settling tank, the water inlet of the settling tank is provided with a filter screen, the inner bottom of the settling tank is slope-shaped, and a number of uniformly arranged from top to bottom are arranged on the side wall of the settling tank. Water outlet pipeline group, said water outlet pipeline group includes at least two water outlet pipelines on the same horizontal line, this setting can greatly speed up the water outlet speed of the settling tank and shorten the water treatment time; each outlet pipeline is equipped with an electromagnetic ball valve, each All the electromagnetic ball valves of the water outlet pipeline group are connected in series and then connected to the controller, the controller is connected to the power supply, and the two ends of each series-connected electromagnetic ball valve are connected with a short-circuit is...

Embodiment 2

[0087] The difference between this embodiment and embodiment 1 is only:

[0088] The TiO 2 / Fe 3 o 4 The preparation method of magnetic composite microspheres is:

[0089] Oil soluble Fe 3 o 4 Preparation of magnetic particles: Dissolve ferric chloride hexahydrate in 2% sodium oleate aqueous solution, the amount of 2% sodium oleate aqueous solution is equivalent to 40 times the amount of ferric chloride hexahydrate, after completely dissolving, mix Add concentrated lye to the mixed solution drop by drop, and stir rapidly while adding. The amount of concentrated lye added is 1 / 2 of 2% sodium oleate aqueous solution, and the concentrated lye is 25% NaOH solution; concentrated lye After the droplet addition is complete, place the reaction solution in an ultrasonic instrument at 70°C, and perform ultrasonic reaction for 90 minutes. After the ultrasonic reaction is completed, take it out, cool to room temperature, adjust the pH with hydrochloric acid until the reaction liquid ...

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Abstract

The invention discloses a domestic sewage treatment method. The method comprises the following steps: 1, domestic sewage is introduced into a sedimentation tank; wherein a plurality of water outlet pipeline groups which are sequentially and uniformly arranged from top to bottom are arranged on one side wall of the sedimentation tank; the water outlet pipeline group comprises at least two water outlet pipelines located on the same horizontal line, an electromagnetic ball valve is arranged in each water outlet pipeline, all the electromagnetic ball valves of each water outlet pipeline group areconnected in series and then connected with a controller, the controller is connected with a power source, and the two ends of each electromagnetic ball valve connected in series are connected with short-circuit isolators; 2, all the water outlet pipelines are communicated with a magnetic degradation tank, a magnetic photocatalyst containing box is arranged on the magnetic degradation tank, and aplurality of waterproof ultraviolet lamps are arranged on the inner wall and the bottom wall of the magnetic degradation tank. Impurities in the domestic sewage such as phosphorus and surfactants canbe efficiently removed, so that the effluent meets the national first-grade A standard or related standards.

Description

technical field [0001] The invention relates to a domestic sewage treatment method, which belongs to the technical field of sewage treatment. Background technique [0002] Domestic sewage contains a large number of chemical components, such as phosphorus components and surfactants in washing powder, laundry detergent, detergent, etc. [0003] Surfactants in domestic sewage have certain toxicity and have chronic poisonous effects on animals, plants and human body. Surfactants can also reduce the oxygen transfer rate in water and hinder the self-purification of water bodies. In addition, the foam produced by domestic sewage will also affect environmental sanitation and aesthetics. [0004] In addition, phosphorus in domestic sewage is a key nutrient that causes water eutrophication. The eutrophication of the water body will not only lead to the rapid growth of algae in the water, but also cause a sharp drop in the oxygen content of the water body, affecting the survival of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B01J23/745H01F41/02
CPCB01J23/745B01J35/0033B01J35/08C02F1/001C02F1/32C02F1/488C02F1/50C02F1/5236C02F1/56C02F3/02C02F3/28C02F3/341C02F3/342C02F9/00C02F2305/10H01F41/0253
Inventor 李海英王大荣闫武钊王飞于慧杨波蔣晶
Owner HEFEI ZHENGJIE INTELLIGENT TECH CO LTD
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