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System and technology for simultaneously treating cutting waste fluids and high calcium and magnesium waste fluids

A technology for simultaneous processing and cutting fluid, applied in the field of water treatment, to achieve the effect of simple process route, avoiding ecological environment pollution, and low energy consumption

Active Publication Date: 2019-07-26
烟台金正环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the traditional sewage treatment process performs personalized treatment for different sewage, and in order to adopt the DTRO technology with better treatment effect, additional hardness reduction process steps and equipment will be added

Method used

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  • System and technology for simultaneously treating cutting waste fluids and high calcium and magnesium waste fluids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 4 cubic meters of mechanical cutting fluid with a sodium stearate concentration of 0.05 mol / L and 1 cubic meter of industrial waste liquid with a calcium and magnesium ion concentration of 0.1 mol / L, after passing through the stirring reaction tank and high calcium and magnesium waste liquid, the mixer frequency is 30Hz, stirring time 0.5 hours, enter the air flotation machine, the aerator in the air flotation machine operates to separate the suspended solids from the solution, and obtain 5.8KG suspended solids, and the solution enters the sand filter and the security filter with a filtration accuracy of 5 μm for filtration Large particles, and then under the pressure of the high-pressure plunger pump, a large number of ions in the water are separated from the water through a two-stage DTRO reverse osmosis membrane separation system (including a 75bar membrane column and a 120 / 160bar membrane column), and the recovery rate reaches 85%. The separated 4.25 tons of high-qua...

Embodiment 2

[0025] 4 cubic meters of soap liquid with a sodium stearate concentration of 0.05mol / L and 1 cubic meter of industrial waste liquid with a calcium and magnesium ion concentration of 0.1mol / L, after passing through the stirring reaction tank and high calcium and magnesium waste liquid, the frequency of the mixer is 30Hz , the stirring time is 0.5 hours, enter the air flotation machine, the aerator in the air flotation machine runs to separate the suspended solids from the solution, and obtain 6.1KG suspended solids, and the solution enters the sand filter and the security filter with a filtration accuracy of 5 μm for filtration. Particulate matter, and then under the pressure of the high-pressure plunger pump, a large number of ions in the water are separated from the water through a two-stage DTRO reverse osmosis membrane separation system (including a 75bar membrane column and a 120 / 160bar membrane column), and the recovery rate reaches 89%. The 4.45 tons of high-quality water...

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Abstract

The invention belongs to the field of water treatment, and particularly relates to a system for simultaneously treating cutting waste fluids and high calcium and magnesium waste fluids. The system comprises a settling tank, a stirring tank and an air flotation machine which are sequentially connected, the high calcium and magnesium waste fluids are placed in the settling tank, the cutting waste fluids are placed in the stirring tank, a water outlet of the air flotation machine is sequentially connected with a sand filtration and security filter and a reverse osmosis membrane separation system,concentrated solution treated by the reverse osmosis membrane separation system and suspended matters of the air flotation machine are discharged into a landfill and subjected to recharge treatment / garbage blending combustion and incineration disposal, effluent of the reverse osmosis membrane separation system is recycled, a stirring device is arranged in the stirring tank, stirring frequency is10-50Hz, the filter precision of the security filter is 5-50 micrometers, and the reverse osmosis membrane separation system is a two-stage DTRO (disk-tube reverse osmosis) membrane separation systemand comprises a 75bar membrane column and a 120 / 160bar membrane column. The invention further discloses a technology applying the system. Finally, waste is used to treat waste, water resources are recycled, and environmental pollution is reduced.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a system and a process for simultaneously treating cutting fluid waste liquid and high-calcium-magnesium waste liquid. Background technique [0002] Cutting fluid waste liquid and industrial high-calcium-magnesium waste liquid are two common types of industrial sewage. Waste cutting fluid contains sodium stearate, while industrial high-calcium-magnesium waste liquid contains a large amount of calcium and magnesium ions. At present, there are salting-out method, lactic acid method, coagulation method, displacement method, high-voltage electric method, adsorption method and other demulsification methods for the treatment of cutting fluid wastewater, and the salting-out coagulation mixing method is mostly used. [0003] For the treatment of industrial high calcium and magnesium wastewater, lime softening or lime soda ash softening can be used to reduce the concentration of...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F1/001C02F1/24C02F1/441C02F1/52C02F1/58C02F9/00C02F2301/08
Inventor 李越彪张迎立张卓刘德华
Owner 烟台金正环保科技有限公司
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