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Method and device for adding coagulant in sewage

A coagulant and sewage technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of wasting coagulant, slow reaction, secondary pollution, etc.

Inactive Publication Date: 2009-06-17
SUZHOU INDAL PARK HESHUN ENTERPRISE ENVIRONMENTAL PROTECTION SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the coagulation treatment, the coagulant used is the key to the treatment. Now many researchers are actively researching and developing composite coagulants or flocculants, but iron salts or aluminum salts are mainly used. The existing Various coagulants still have some problems. For example, in the process of sewage treatment, the reaction is slow, some coagulants do not react with the suspended solids in the water, and the residual metal elements in the water cause secondary pollution. At the same time Coagulant wasted due to incomplete reaction

Method used

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  • Method and device for adding coagulant in sewage

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Effect test

Embodiment 1

[0016] Embodiment 1 of the present invention: a device for adding a coagulant to sewage, inserting a chemical spraying pipeline 2 in the sewage pipeline 1 to be coagulated, and for the effect of spraying medicine to be more uniform, the bottom of the chemical spraying pipeline 2 is sealed and sprayed The medicine outlet 4 is evenly distributed on the side of the medicine spraying pipeline 2, and according to the diameter of the sewage pipeline 1, 2 to 8 medicine spraying mouths 4 are made on the side of the medicine spraying pipeline 2, and two are connected above the medicine spraying pipeline 2 for Add additional pipeline 3 for composite elements. The coagulant can choose iron salt or aluminum salt, and the compound elements use commonly used substances such as active silicic acid and rare earth.

[0017] After testing, the distance between the connection port of the additional pipeline 3 and the spraying pipeline 2 and the spraying port 4 can be set between 5 and 50 centime...

Embodiment 2

[0019] Embodiment 2 of the present invention: a device for adding a coagulant to sewage, inserting a spraying pipeline 2 in the sewage pipeline 1 to be coagulated, and for the effect of spraying to be more uniform, the bottom of the spraying pipeline 2 is sealed, sprayed The drug openings 4 are evenly distributed on the side of the spraying pipeline 2. According to the diameter of the sewage pipeline 1, 3 to 7 spraying ports 4 are made on the side of the spraying pipeline 2, and one is connected above the spraying pipeline 2 for Add additional pipeline 3 for composite elements. The coagulant can choose iron salt or aluminum salt, and the composite elements use active silicic acid and rare earth.

[0020] The distance between the connection port of the additional pipeline 3 spraying pipeline 2 and the spraying port 4 can be set between 10-40 cm, so that the mixing time of the medicine can be controlled within 2-6 seconds, so that the medicine can be mixed evenly and keep the me...

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Abstract

The invention discloses a coagulant adding method and device in the effluent, which is characterized by the following: connecting at least one additional pipe on the drug injecting pipe; adding composite element in the additional pipe to improve coagulant efficiency; blending composite element and coagulant into effluent pipe or outlet effluent; possessing optimal coagulating property; avoiding secondary pollution for water.

Description

technical field [0001] The invention relates to a method and a device for adding a coagulant to sewage, belonging to the technical field of sewage treatment. Background technique [0002] In the prior art, in sewage treatment and water purification, coagulation is one of the very important units. It uses coagulants to change the state of particles in water, destabilize suspended components and colloidal components in water, and in a certain Under certain conditions, such flocs are formed that can be separated by sedimentation or air flotation, and then this part of the flocs is separated by sedimentation or air flotation. In the coagulation treatment, the coagulant used is the key to the treatment. Now many researchers are actively researching and developing composite coagulants or flocculants, but iron salts or aluminum salts are mainly used. The existing Various coagulants still have some problems. For example, in the process of sewage treatment, the reaction is slow, som...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
Inventor 吕建荣
Owner SUZHOU INDAL PARK HESHUN ENTERPRISE ENVIRONMENTAL PROTECTION SERVICE
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