Novel integral softening and treating device for industrial wastewater with high salt content

A technology for industrial wastewater and softening treatment, which is applied in the field of water treatment and can solve the problems of large consumption of chemicals, large floor space, and difficulty in controlling the dosage of chemicals.

Inactive Publication Date: 2016-06-01
INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The above softening devices all have disadvantages such as large co...

Method used

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  • Novel integral softening and treating device for industrial wastewater with high salt content

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Effect test

Embodiment 1

[0045] Such as figure 1 As shown, the high-salt industrial wastewater of the present invention enters the reaction tank 15 from the high-salt wastewater pool 14 through the pipeline mixer 4, and before entering the reaction tank 15, the dosing pipe 13-1 is added with sodium hydroxide and mixed by the pipeline 4 mixing, along with the rise of the water level, sodium carbonate is added through the dosing pipe 13-2 above the reaction tank 15, and then the calcium and magnesium in the water generate magnesium hydroxide and calcium carbonate precipitation by reacting with sodium hydroxide and sodium carbonate, The reaction pool 15 enters the coagulation pool 23 evenly through the water distribution channel 7, and the polyferric sulfate coagulant is added to the water distribution channel 7 through the dosing pipe 13-3, and the mixer 5 slowly stirs and enters the flocculation pool 24 through the outlet hole 26. The flocculation tank 24 is filled with polyacrylamide flocculant and hy...

Embodiment 2

[0047] Such as figure 1 As shown, taking the high-hardness saline wastewater treatment project in the industrial park as an example, the average concentration of each pollutant is: total hardness (in terms of CaCO 3 Calculated) is 3500mg / L, total alkalinity (as CaCO 3 Total) is 300mg / L, TDS is 7800mg / L, COD is 200mg / L, ammonia nitrogen is 12mg / L. The influent flow rate is 400m3 / h.

[0048] Add 32% liquid caustic soda through the dosing pipe 13-1 on the water inlet pipe of the pipeline mixer 4, and the dosage is 3500~3900g / T, add sodium carbonate through the dosing pipe 13-2 above the reaction tank 15, and the sodium carbonate is added The dosage is 2000-2300g / T, and the reaction time is 3-4h; the polyferric sulfate coagulant is added to the distribution channel 7 through the dosing pipe 13-3, and the dosage of the coagulant is 45-65g / T. Stirring speed is 80-120r / min, polyacrylamide flocculant and hydrochloric acid are added to the flocculation tank 24 through dosing pipes 1...

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Abstract

The invention discloses a novel integral softening and treating device for industrial wastewater with a high salt content, and belongs to the field of water treatment. A reaction tank, a flocculate collecting tank and a sedimentation tank are arranged on a tank base of the novel integral softening and treating device side by side, and a flocculate mixing tank and a flocculation tank are vertically arranged in the flocculate collecting tank; the reaction tank is communicated with the flocculate mixing tank via a water distributing channel of the reaction tank, the flocculate mixing tank is communicated with the flocculation tank via a water outlet hole in a tank bottom, the flocculation tank is communicated with the sedimentation tank via an overflow zone, the sedimentation tank is communicated with a mixing tank via outlet water of a water outlet weir, the mixing tank is communicated with a quartz sand filter, and chemical tanks are arranged in a chemical dosing device side by side and are respectively communicated with the front end of a pipeline mixer, the reaction tank, the flocculate mixing tank and the flocculation tank via chemical dosing pipes. The novel integral softening and treating device has the advantages that the occupied area and the investment can be effectively reduced; sediments can be prevented in the flocculate collecting tank; the novel integral softening and treating device is high in hardness removal rate; chemical dosing quantities can be reduced; thorough sludge and water separation effects can be realized; sludge is high in solid content and can be directly dehydrated and treated; the novel integral softening and treating device is simple in structural design and simple and reasonable in arrangement.

Description

technical field [0001] The invention belongs to the field of water treatment and relates to a novel integrated softening treatment device for high-salt industrial wastewater. Background technique [0002] At present, for the removal of hardness in high-salt industrial wastewater, several common treatment devices are: advection sedimentation tanks, high-density sedimentation tanks and interception sedimentation tanks. [0003] 1) Advection type sedimentation tank: Advection type sedimentation tank is currently the most widely used pool type in large and medium-sized water supply plants in my country. It has the advantages of simple structure, convenient management, and strong impact load resistance. The advection sedimentation tank is rectangular, the upper part is the sedimentation area, the lower part is the sludge area, there is a water inlet area in the front of the pool, and a water outlet area in the rear of the pool. After the coagulated raw water flows into the sedim...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/001C02F1/5236C02F1/5281C02F1/56C02F1/66C02F5/06
Inventor 刘慧王俊辉赛世杰李战胜薛源刘丹茹张娜郭默然齐婧党平姚红锐李思序高贵和杭天浜
Owner INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH
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