Hydraulic-loom wastewater treatment recycling method

A technology for water jet loom and wastewater treatment, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. Environmental secondary pollution, difficult to remove oil and other problems

Inactive Publication Date: 2014-09-17
SHAOXING SHENSHUI ENVIRONMENTAL PROTECTION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process technology is a typical combination of biochemical treatment. The quality of biological treatment directly affects the water quality of reclaimed water. Not only is oil difficult to remove, but also the conductivity and hardness of water quality indicators are not easy to control.
[0006] 4. The patent number is 200810060496.6, and the patent name is "a water jet loom wastewater treatment and reuse method". The main technology combination is "mechanical filtration + sodium ion exchange + air flotation + biology + reuse". The former has further innovations, but it increases the difficulty and cost of regeneration of sodium ions, and the disposal of the generated physical and chemical sludge and oil has not been considered. Once disposed of improperly, it will cause secondary pollution to the environment

Method used

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  • Hydraulic-loom wastewater treatment recycling method

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Embodiment 1

[0021] In the embodiment of wastewater treatment and reuse in a water jet loom workshop, the wastewater treatment flow rate is 1200m 3 / d, the CODcr concentration is 500mg / l, the pH value is 6.5, the SS concentration is 420mg / l, and the chromaticity is 360 ° (dilution multiple), adopt the present invention as figure 1 Shown a kind of water jet loom waste water treatment reuse method, concrete steps are as follows:

[0022] The first step is to pre-treat the waste water from the water jet loom for degreasing, and the waste water from the water jet loom enters the grille to filter out the large particles of debris and fibers, and then the waste water flows into the oil separator to remove the slick oil , and then enter the row-type cinder oil absorption device to absorb oily substances, and then collect the sundries, fibers, floating oil and oily cinders through the pipeline, and mix them into the coal-fired boiler for incineration. On the one hand, the boiler can increase the c...

Embodiment 2

[0028] The present invention is through the optimal combination of water jet loom wastewater treatment process, referring to the attached figure 1 The treatment and reuse process is determined as follows: firstly, the oil, large colloidal particles and sundries are basically removed through degreasing pretreatment,

[0029] It effectively reduces the load of subsequent physical and chemical processing and physical processing, and improves processing efficiency.

[0030] By adding coagulant aids sodium hydroxide, ferrous sulfate and polyacrylamide to the three sets of pipeline mixers respectively, the dosages are about 0.2%, 0.2% and 0.03% of the waste water, and through the flow water in the pipeline mixer Stirring at the flow rate will cause the negatively charged colloidal particles in the neutralized water to become unstable and adsorb with other colloidal particles in the water to form larger particles. The water flows into the reaction tank of the coagulation and sediment...

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Abstract

A hydraulic-loom wastewater treatment recycling method belongs to the field of a wastewater treatment recycling technology. By a method of ''oil removal+ coal slag adsorption+ coagulating sedimentation+ air floatation +mechanical filtration + recycling'', hydraulic-loom wastewater enters a grating well, an oil removal device and a gang-type coal slag oil-absorption device to carry out oil-removal pretreatment; the hydraulic-loom wastewater flows into a homogeneous regulating tank; a pump is used for lifting; sodium hydroxide, polyaluminum chloride and polyacrylamide are respectively poured into three pipeline mixers; hydraulic-loom wastewater is sent into a coagulating sedimentation device and a high-efficiency air floatation device to carry out physicochemical treatment, and an effluent flows into a middle water tank; the pump is used for lifting and the effluent is sent into a multimedium filter, a microstrainer and a security filter to carry out physical treatment, an effluent flows into a recycling clean-water basin, and the pump is used for lifting and the effluent is sent into a hydraulic-loom for recycling; separated floating oil, granular colloid and foreign materials can be doped with fire coal and the mixture is sent into a furnace to be burned; physicochemical float sludge, physicochemical mud and wash water are collected and flow into a sludge thickener; and sludge is sent through a screw pump into a sludge dewaterer for dehydration. Hydraulic-loom wastewater treatment recycling rate can reach more than 95%.

Description

technical field [0001] The invention relates to a water jet loom wastewater treatment and reuse method, which belongs to the technical field of wastewater treatment and recovery, and is suitable for the treatment and reuse of water jet loom wastewater. Background technique [0002] Water jet loom is a kind of special equipment commonly used in the textile industry. During the operation process, a certain amount of clean water is required to be sprayed and driven. The daily water consumption of each loom is generally between 1.5-2 tons. It mainly contains oil, jelly, suspended matter, chemical slurry, chroma, microorganisms and organic matter, etc. The concentration of its wastewater is COD500mg / l, pH6.5, chroma 360° (dilution multiple), SS420mg / L or so, and can be It has poor biochemical properties and is one of the most difficult industrial wastewaters to treat. At present, in the domestic textile industry, there are mainly the following technologies for the treatment and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F11/12
Inventor 徐国夫祁华宝陈宝义单佳平王建锋沈杰
Owner SHAOXING SHENSHUI ENVIRONMENTAL PROTECTION EQUIP
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